+++ /dev/null
---- ./fs/ext3/super.c 2002/03/05 06:18:59 2.1
-+++ ./fs/ext3/super.c 2002/03/05 06:26:56
-@@ -529,6 +529,12 @@
- "EXT3 Check option not supported\n");
- #endif
- }
-+ else if (!strcmp (this_char, "index"))
-+#ifdef CONFIG_EXT3_INDEX
-+ set_opt (*mount_options, INDEX);
-+#else
-+ printk("EXT3 index option not supported\n");
-+#endif
- else if (!strcmp (this_char, "debug"))
- set_opt (*mount_options, DEBUG);
- else if (!strcmp (this_char, "errors")) {
-@@ -702,6 +708,12 @@
- es->s_mtime = cpu_to_le32(CURRENT_TIME);
- ext3_update_dynamic_rev(sb);
- EXT3_SET_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER);
-+
-+ if (test_opt(sb, INDEX))
-+ EXT3_SET_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_DIR_INDEX);
-+ else if (EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_DIR_INDEX))
-+ set_opt (EXT3_SB(sb)->s_mount_opt, INDEX);
-+
- ext3_commit_super (sb, es, 1);
- if (test_opt (sb, DEBUG))
- printk (KERN_INFO
---- ./fs/ext3/namei.c 2002/03/05 06:18:59 2.1
-+++ ./fs/ext3/namei.c 2002/03/06 00:13:18
-@@ -16,6 +16,10 @@
- * David S. Miller (davem@caip.rutgers.edu), 1995
- * Directory entry file type support and forward compatibility hooks
- * for B-tree directories by Theodore Ts'o (tytso@mit.edu), 1998
-+ * Hash Tree Directory indexing (c)
-+ * Daniel Phillips, 2001
-+ * Hash Tree Directory indexing porting
-+ * Christopher Li, 2002
- */
-
- #include <linux/fs.h>
-@@ -33,7 +33,7 @@
- #include <linux/string.h>
- #include <linux/locks.h>
- #include <linux/quotaops.h>
--
-+#include <linux/slab.h>
-
- /*
- * define how far ahead to read directories while searching them.
-@@ -38,6 +42,437 @@
- #define NAMEI_RA_SIZE (NAMEI_RA_CHUNKS * NAMEI_RA_BLOCKS)
- #define NAMEI_RA_INDEX(c,b) (((c) * NAMEI_RA_BLOCKS) + (b))
-
-+static struct buffer_head *ext3_append(handle_t *handle,
-+ struct inode *inode,
-+ u32 *block, int *err)
-+{
-+ struct buffer_head *bh;
-+
-+ *block = inode->i_size >> inode->i_sb->s_blocksize_bits;
-+
-+ if ((bh = ext3_bread(handle, inode, *block, 1, err))) {
-+ inode->i_size += inode->i_sb->s_blocksize;
-+ EXT3_I(inode)->i_disksize = inode->i_size;
-+ ext3_journal_get_write_access(handle,bh);
-+ }
-+ return bh;
-+}
-+
-+#ifndef assert
-+#define assert(test) J_ASSERT(test)
-+#endif
-+
-+#ifndef swap
-+#define swap(x, y) do { typeof(x) z = x; x = y; y = z; } while (0)
-+#endif
-+
-+typedef struct { u32 v; } le_u32;
-+typedef struct { u16 v; } le_u16;
-+
-+#define dxtrace_on(command) command
-+#define dxtrace_off(command)
-+
-+struct fake_dirent
-+{
-+ /*le*/u32 inode;
-+ /*le*/u16 rec_len;
-+ u8 name_len;
-+ u8 file_type;
-+};
-+
-+struct dx_countlimit
-+{
-+ le_u16 limit;
-+ le_u16 count;
-+};
-+
-+struct dx_entry
-+{
-+ le_u32 hash;
-+ le_u32 block;
-+};
-+
-+/*
-+ * dx_root_info is laid out so that if it should somehow get overlaid by a
-+ * dirent the two low bits of the hash version will be zero. Therefore, the
-+ * hash version mod 4 should never be 0. Sincerely, the paranoia department.
-+ */
-+
-+struct dx_root
-+{
-+ struct fake_dirent dot;
-+ char dot_name[4];
-+ struct fake_dirent dotdot;
-+ char dotdot_name[4];
-+ struct dx_root_info
-+ {
-+ le_u32 reserved_zero;
-+ u8 hash_version; /* 0 now, 1 at release */
-+ u8 info_length; /* 8 */
-+ u8 indirect_levels;
-+ u8 unused_flags;
-+ }
-+ info;
-+ struct dx_entry entries[0];
-+};
-+
-+struct dx_node
-+{
-+ struct fake_dirent fake;
-+ struct dx_entry entries[0];
-+};
-+
-+
-+struct dx_frame
-+{
-+ struct buffer_head *bh;
-+ struct dx_entry *entries;
-+ struct dx_entry *at;
-+};
-+
-+struct dx_map_entry
-+{
-+ u32 hash;
-+ u32 offs;
-+};
-+
-+typedef struct ext3_dir_entry_2 ext3_dirent;
-+static inline unsigned dx_get_block (struct dx_entry *entry);
-+static void dx_set_block (struct dx_entry *entry, unsigned value);
-+static inline unsigned dx_get_hash (struct dx_entry *entry);
-+static void dx_set_hash (struct dx_entry *entry, unsigned value);
-+static unsigned dx_get_count (struct dx_entry *entries);
-+static unsigned dx_get_limit (struct dx_entry *entries);
-+static void dx_set_count (struct dx_entry *entries, unsigned value);
-+static void dx_set_limit (struct dx_entry *entries, unsigned value);
-+static unsigned dx_root_limit (struct inode *dir, unsigned infosize);
-+static unsigned dx_node_limit (struct inode *dir);
-+static unsigned dx_hack_hash (const u8 *name, int len);
-+static struct dx_frame *dx_probe (struct inode *dir, u32 hash, struct dx_frame *frame);
-+static void dx_release (struct dx_frame *frames);
-+static int dx_make_map (ext3_dirent *de, int size, struct dx_map_entry map[]);
-+static void dx_sort_map(struct dx_map_entry *map, unsigned count);
-+static ext3_dirent *dx_copy_dirents (char *from, char *to,
-+ struct dx_map_entry *map, int count);
-+static void dx_insert_block (struct dx_frame *frame, u32 hash, u32 block);
-+
-+
-+#ifdef CONFIG_EXT3_INDEX
-+/*
-+ * Future: use high four bits of block for coalesce-on-delete flags
-+ * Mask them off for now.
-+ */
-+
-+static inline unsigned dx_get_block (struct dx_entry *entry)
-+{
-+ return le32_to_cpu(entry->block.v) & 0x00ffffff;
-+}
-+
-+static inline void dx_set_block (struct dx_entry *entry, unsigned value)
-+{
-+ entry->block.v = cpu_to_le32(value);
-+}
-+
-+static inline unsigned dx_get_hash (struct dx_entry *entry)
-+{
-+ return le32_to_cpu(entry->hash.v);
-+}
-+
-+static inline void dx_set_hash (struct dx_entry *entry, unsigned value)
-+{
-+ entry->hash.v = cpu_to_le32(value);
-+}
-+
-+static inline unsigned dx_get_count (struct dx_entry *entries)
-+{
-+ return le16_to_cpu(((struct dx_countlimit *) entries)->count.v);
-+}
-+
-+static inline unsigned dx_get_limit (struct dx_entry *entries)
-+{
-+ return le16_to_cpu(((struct dx_countlimit *) entries)->limit.v);
-+}
-+
-+static inline void dx_set_count (struct dx_entry *entries, unsigned value)
-+{
-+ ((struct dx_countlimit *) entries)->count.v = cpu_to_le16(value);
-+}
-+
-+static inline void dx_set_limit (struct dx_entry *entries, unsigned value)
-+{
-+ ((struct dx_countlimit *) entries)->limit.v = cpu_to_le16(value);
-+}
-+
-+static inline unsigned dx_root_limit (struct inode *dir, unsigned infosize)
-+{
-+ unsigned entry_space = dir->i_sb->s_blocksize - EXT3_DIR_REC_LEN(1) -
-+ EXT3_DIR_REC_LEN(2) - infosize;
-+ return 0? 20: entry_space / sizeof(struct dx_entry);
-+}
-+
-+static inline unsigned dx_node_limit (struct inode *dir)
-+{
-+ unsigned entry_space = dir->i_sb->s_blocksize - EXT3_DIR_REC_LEN(0);
-+ return 0? 22: entry_space / sizeof(struct dx_entry);
-+}
-+
-+/* Hash function - not bad, but still looking for an ideal default */
-+
-+static unsigned dx_hack_hash (const u8 *name, int len)
-+{
-+ u32 hash0 = 0x12a3fe2d, hash1 = 0x37abe8f9;
-+ while (len--)
-+ {
-+ u32 hash = hash1 + (hash0 ^ (*name++ * 7152373));
-+ if (hash & 0x80000000) hash -= 0x7fffffff;
-+ hash1 = hash0;
-+ hash0 = hash;
-+ }
-+ return hash0;
-+}
-+
-+#define dx_hash(s,n) (dx_hack_hash(s,n) << 1)
-+
-+/*
-+ * Debug
-+ */
-+#ifdef DX_DEBUG
-+#define dxtrace dxtrace_on
-+static void dx_show_index (char * label, struct dx_entry *entries)
-+{
-+ int i, n = dx_get_count (entries);
-+ printk("%s index ", label);
-+ for (i = 0; i < n; i++)
-+ {
-+ printk("%x->%u ", i? dx_get_hash(entries + i): 0, dx_get_block(entries + i));
-+ }
-+ printk("\n");
-+}
-+
-+struct stats
-+{
-+ unsigned names;
-+ unsigned space;
-+ unsigned bcount;
-+};
-+
-+static struct stats dx_show_leaf (ext3_dirent *de, int size, int show_names)
-+{
-+ unsigned names = 0, space = 0;
-+ char *base = (char *) de;
-+ printk("names: ");
-+ while ((char *) de < base + size)
-+ {
-+ if (de->inode)
-+ {
-+ if (show_names)
-+ {
-+ int len = de->name_len;
-+ char *name = de->name;
-+ while (len--) printk("%c", *name++);
-+ printk(":%x.%u ", dx_hash (de->name, de->name_len), ((char *) de - base));
-+ }
-+ space += EXT3_DIR_REC_LEN(de->name_len);
-+ names++;
-+ }
-+ de = (ext3_dirent *) ((char *) de + le16_to_cpu(de->rec_len));
-+ }
-+ printk("(%i)\n", names);
-+ return (struct stats) { names, space, 1 };
-+}
-+
-+struct stats dx_show_entries (struct inode *dir, struct dx_entry *entries, int levels)
-+{
-+ unsigned blocksize = dir->i_sb->s_blocksize;
-+ unsigned count = dx_get_count (entries), names = 0, space = 0, i;
-+ unsigned bcount = 0;
-+ struct buffer_head *bh;
-+ int err;
-+ printk("%i indexed blocks...\n", count);
-+ for (i = 0; i < count; i++, entries++)
-+ {
-+ u32 block = dx_get_block(entries), hash = i? dx_get_hash(entries): 0;
-+ u32 range = i < count - 1? (dx_get_hash(entries + 1) - hash): ~hash;
-+ struct stats stats;
-+ printk("%s%3u:%03u hash %8x/%8x ",levels?"":" ", i, block, hash, range);
-+ if (!(bh = ext3_bread (NULL,dir, block, 0,&err))) continue;
-+ stats = levels?
-+ dx_show_entries (dir, ((struct dx_node *) bh->b_data)->entries, levels - 1):
-+ dx_show_leaf ((ext3_dirent *) bh->b_data, blocksize, 0);
-+ names += stats.names;
-+ space += stats.space;
-+ bcount += stats.bcount;
-+ brelse (bh);
-+ }
-+ if (bcount)
-+ printk("%snames %u, fullness %u (%u%%)\n", levels?"":" ",
-+ names, space/bcount,(space/bcount)*100/blocksize);
-+ return (struct stats) { names, space, bcount};
-+}
-+#else
-+#define dxtrace dxtrace_off
-+#endif
-+
-+/*
-+ * Probe for a directory leaf block to search
-+ */
-+
-+static struct dx_frame *
-+dx_probe(struct inode *dir, u32 hash, struct dx_frame *frame_in)
-+{
-+ unsigned count, indirect;
-+ struct dx_entry *at, *entries, *p, *q, *m;
-+ struct dx_root *root;
-+ struct buffer_head *bh;
-+ struct dx_frame *frame = frame_in;
-+ int err;
-+
-+ frame->bh = NULL;
-+ if (!(bh = ext3_bread(NULL, dir, 0, 0, &err)))
-+ goto fail;
-+ root = (struct dx_root *) bh->b_data;
-+ if (root->info.hash_version > 0 || root->info.unused_flags & 1) {
-+ brelse(bh);
-+ goto fail;
-+ }
-+ if ((indirect = root->info.indirect_levels) > 1) {
-+ brelse(bh);
-+ goto fail;
-+ }
-+ entries = (struct dx_entry *) (((char *) &root->info) + root->info.info_length);
-+ assert (dx_get_limit(entries) == dx_root_limit(dir, root->info.info_length));
-+ dxtrace (printk("Look up %x", hash));
-+ while (1)
-+ {
-+ count = dx_get_count(entries);
-+ assert (count && count <= dx_get_limit(entries));
-+ p = entries + 1;
-+ q = entries + count - 1;
-+ while (p <= q)
-+ {
-+ m = p + (q - p)/2;
-+ dxtrace(printk("."));
-+ if (dx_get_hash(m) > hash)
-+ q = m - 1;
-+ else
-+ p = m + 1;
-+ }
-+
-+ if (0) // linear search cross check
-+ {
-+ unsigned n = count - 1;
-+ at = entries;
-+ while (n--)
-+ {
-+ dxtrace(printk(","));
-+ if (dx_get_hash(++at) > hash)
-+ {
-+ at--;
-+ break;
-+ }
-+ }
-+ assert (at == p - 1);
-+ }
-+
-+ at = p - 1;
-+ dxtrace(printk(" %x->%u\n", at == entries? 0: dx_get_hash(at), dx_get_block(at)));
-+ frame->bh = bh;
-+ frame->entries = entries;
-+ frame->at = at;
-+ if (!indirect--) return frame;
-+ if (!(bh = ext3_bread (NULL,dir, dx_get_block(at), 0,&err)))
-+ goto fail2;
-+ at = entries = ((struct dx_node *) bh->b_data)->entries;
-+ assert (dx_get_limit(entries) == dx_node_limit (dir));
-+ frame++;
-+ }
-+fail2:
-+ while (frame >= frame_in) {
-+ brelse(frame->bh);
-+ frame--;
-+ }
-+fail:
-+ return NULL;
-+}
-+
-+static void dx_release (struct dx_frame *frames)
-+{
-+ if (frames[0].bh == NULL)
-+ return;
-+
-+ if (((struct dx_root *)frames[0].bh->b_data)->info.indirect_levels)
-+ brelse (frames[1].bh);
-+ brelse (frames[0].bh);
-+}
-+
-+/*
-+ * Directory block splitting, compacting
-+ */
-+
-+static int dx_make_map (ext3_dirent *de, int size, struct dx_map_entry map[])
-+{
-+ int count = 0;
-+ char *base = (char *) de;
-+ while ((char *) de < base + size) {
-+ if (de->name_len && de->inode) {
-+ map[count].hash = dx_hash (de->name, de->name_len);
-+ map[count].offs = (u32) ((char *) de - base);
-+ count++;
-+ }
-+ de = (ext3_dirent *) ((char *) de + le16_to_cpu(de->rec_len));
-+ }
-+ return count;
-+}
-+
-+static void dx_sort_map (struct dx_map_entry *map, unsigned count)
-+{
-+ struct dx_map_entry *p, *q, *top = map + count - 1;
-+ int more;
-+ /* Combsort until bubble sort doesn't suck */
-+ while (count > 2)
-+ {
-+ count = count*10/13;
-+ if (count - 9 < 2) /* 9, 10 -> 11 */
-+ count = 11;
-+ for (p = top, q = p - count; q >= map; p--, q--)
-+ if (p->hash < q->hash)
-+ swap(*p, *q);
-+ }
-+ /* Garden variety bubble sort */
-+ do {
-+ more = 0;
-+ q = top;
-+ while (q-- > map)
-+ {
-+ if (q[1].hash >= q[0].hash)
-+ continue;
-+ swap(*(q+1), *q);
-+ more = 1;
-+ }
-+ } while(more);
-+}
-+
-+static void dx_insert_block(struct dx_frame *frame, u32 hash, u32 block)
-+{
-+ struct dx_entry *entries = frame->entries;
-+ struct dx_entry *old = frame->at, *new = old + 1;
-+ int count = dx_get_count(entries);
-+
-+ assert(count < dx_get_limit(entries));
-+ assert(old < entries + count);
-+ memmove(new + 1, new, (char *)(entries + count) - (char *)(new));
-+ dx_set_hash(new, hash);
-+ dx_set_block(new, block);
-+ dx_set_count(entries, count + 1);
-+}
-+#endif
-+
-+static void ext3_update_dx_flag(struct inode *inode)
-+{
-+ if (!test_opt(inode->i_sb, INDEX))
-+ EXT3_I(inode)->i_flags &= ~EXT3_INDEX_FL;
-+}
-+
- /*
- * NOTE! unlike strncmp, ext3_match returns 1 for success, 0 for failure.
- *
-@@ -95,6 +529,15 @@
- }
-
- /*
-+ * p is at least 6 bytes before the end of page
-+ */
-+static inline ext3_dirent *ext3_next_entry(ext3_dirent *p)
-+{
-+ return (ext3_dirent *)((char*)p + le16_to_cpu(p->rec_len));
-+}
-+
-+
-+/*
- * ext3_find_entry()
- *
- * finds an entry in the specified directory with the wanted name. It
-@@ -105,6 +548,8 @@
- * The returned buffer_head has ->b_count elevated. The caller is expected
- * to brelse() it when appropriate.
- */
-+
-+
- static struct buffer_head * ext3_find_entry (struct dentry *dentry,
- struct ext3_dir_entry_2 ** res_dir)
- {
-@@ -119,10 +564,70 @@
- int num = 0;
- int nblocks, i, err;
- struct inode *dir = dentry->d_parent->d_inode;
-+ ext3_dirent *de, *top;
-
- *res_dir = NULL;
- sb = dir->i_sb;
-+ if (dentry->d_name.len > EXT3_NAME_LEN)
-+ return NULL;
-+ if (ext3_dx && is_dx(dir)) {
-+ u32 hash = dx_hash(dentry->d_name.name, dentry->d_name.len);
-+ struct dx_frame frames[2], *frame;
-+ if (!(frame = dx_probe (dir, hash, frames)))
-+ return NULL;
-+dxnext:
-+ block = dx_get_block(frame->at);
-+ if (!(bh = ext3_bread (NULL,dir, block, 0, &err)))
-+ goto dxfail;
-+ de = (ext3_dirent *) bh->b_data;
-+ top = (ext3_dirent *) ((char *) de + sb->s_blocksize -
-+ EXT3_DIR_REC_LEN(0));
-+ for (; de < top; de = ext3_next_entry(de))
-+ if (ext3_match(dentry->d_name.len, dentry->d_name.name, de)) {
-+ if (!ext3_check_dir_entry("ext3_find_entry",
-+ dir, de, bh,
-+ (block<<EXT3_BLOCK_SIZE_BITS(sb))
-+ +((char *)de - bh->b_data))) {
-+ brelse (bh);
-+ goto dxfail;
-+ }
-+ *res_dir = de;
-+ goto dxfound;
-+ }
-+ brelse (bh);
-+ /* Same hash continues in next block? Search on. */
-+ if (++(frame->at) == frame->entries + dx_get_count(frame->entries))
-+ {
-+ struct buffer_head *bh2;
-+ if (frame == frames)
-+ goto dxfail;
-+ if (++(frames->at) == frames->entries + dx_get_count(frames->entries))
-+ goto dxfail;
-+ /* should omit read if not continued */
-+ if (!(bh2 = ext3_bread (NULL, dir,
-+ dx_get_block(frames->at),
-+ 0, &err)))
-+ goto dxfail;
-+ brelse (frame->bh);
-+ frame->bh = bh2;
-+ frame->at = frame->entries = ((struct dx_node *) bh2->b_data)->entries;
-+ /* Subtle: the 0th entry has the count, find the hash in frame above */
-+ if ((dx_get_hash(frames->at) & -2) == hash)
-+ goto dxnext;
-+ goto dxfail;
-+ }
-+ if ((dx_get_hash(frame->at) & -2) == hash)
-+ goto dxnext;
-+dxfail:
-+ dxtrace(printk("%s not found\n", name));
-+ dx_release (frames);
-+ return NULL;
-+dxfound:
-+ dx_release (frames);
-+ return bh;
-
-+ }
-+
- nblocks = dir->i_size >> EXT3_BLOCK_SIZE_BITS(sb);
- start = dir->u.ext3_i.i_dir_start_lookup;
- if (start >= nblocks)
-@@ -237,6 +748,90 @@
- de->file_type = ext3_type_by_mode[(mode & S_IFMT)>>S_SHIFT];
- }
-
-+static ext3_dirent *
-+dx_copy_dirents (char *from, char *to, struct dx_map_entry *map, int count)
-+{
-+ unsigned rec_len = 0;
-+
-+ while (count--) {
-+ ext3_dirent *de = (ext3_dirent *) (from + map->offs);
-+ rec_len = EXT3_DIR_REC_LEN(de->name_len);
-+ memcpy (to, de, rec_len);
-+ ((ext3_dirent *)to)->rec_len = le16_to_cpu(rec_len);
-+ to += rec_len;
-+ map++;
-+ }
-+ return (ext3_dirent *) (to - rec_len);
-+}
-+
-+#ifdef CONFIG_EXT3_INDEX
-+static ext3_dirent *do_split(handle_t *handle, struct inode *dir,
-+ struct buffer_head **bh,struct dx_frame *frame,
-+ u32 hash, int *error)
-+{
-+ unsigned count;
-+ struct buffer_head *bh2;
-+ u32 newblock;
-+ u32 hash2;
-+ struct dx_map_entry *map;
-+ char *data1 = (*bh)->b_data, *data2, *data3;
-+ unsigned split;
-+ ext3_dirent *de, *de2;
-+
-+ bh2 = ext3_append (handle, dir, &newblock, error);
-+ if (!(bh2))
-+ {
-+ brelse(*bh);
-+ *bh = NULL;
-+ return (ext3_dirent *)bh2;
-+ }
-+
-+ BUFFER_TRACE(*bh, "get_write_access");
-+ ext3_journal_get_write_access(handle, *bh);
-+ BUFFER_TRACE(frame->bh, "get_write_access");
-+ ext3_journal_get_write_access(handle, frame->bh);
-+
-+ data2 = bh2->b_data;
-+
-+ map = kmalloc(sizeof(*map) * PAGE_CACHE_SIZE/EXT3_DIR_REC_LEN(1) + 1,
-+ GFP_KERNEL);
-+ if (!map)
-+ panic("no memory for do_split\n");
-+ count = dx_make_map((ext3_dirent *)data1, dir->i_sb->s_blocksize, map);
-+ split = count/2; // need to adjust to actual middle
-+ dx_sort_map (map, count);
-+ hash2 = map[split].hash;
-+ dxtrace(printk("Split block %i at %x, %i/%i\n",
-+ dx_get_block(frame->at), hash2, split, count-split));
-+
-+ /* Fancy dance to stay within two buffers */
-+ de2 = dx_copy_dirents (data1, data2, map + split, count - split);
-+ data3 = (char *) de2 + le16_to_cpu(de2->rec_len);
-+ de = dx_copy_dirents (data1, data3, map, split);
-+ memcpy(data1, data3, (char *) de + le16_to_cpu(de->rec_len) - data3);
-+ de = (ext3_dirent *) ((char *) de - data3 + data1); // relocate de
-+ de->rec_len = cpu_to_le16(data1 + dir->i_sb->s_blocksize - (char *)de);
-+ de2->rec_len = cpu_to_le16(data2 + dir->i_sb->s_blocksize-(char *)de2);
-+ dxtrace(dx_show_leaf((ext3_dirent *)data1, dir->i_sb->s_blocksize, 1));
-+ dxtrace(dx_show_leaf((ext3_dirent *)data2, dir->i_sb->s_blocksize, 1));
-+
-+ /* Which block gets the new entry? */
-+ if (hash >= hash2)
-+ {
-+ swap(*bh, bh2);
-+ de = de2;
-+ }
-+ dx_insert_block(frame, hash2 + (hash2 == map[split-1].hash), newblock);
-+ ext3_journal_dirty_metadata (handle, bh2);
-+ brelse (bh2);
-+ ext3_journal_dirty_metadata (handle, frame->bh);
-+ dxtrace(dx_show_index ("frame", frame->entries));
-+ kfree(map);
-+ return de;
-+}
-+#endif
-+
-+
- /*
- * ext3_add_entry()
- *
-@@ -255,118 +849,279 @@
- struct inode *inode)
- {
- struct inode *dir = dentry->d_parent->d_inode;
-- const char *name = dentry->d_name.name;
-- int namelen = dentry->d_name.len;
- unsigned long offset;
-- unsigned short rec_len;
- struct buffer_head * bh;
-- struct ext3_dir_entry_2 * de, * de1;
-- struct super_block * sb;
-+ ext3_dirent *de;
-+ struct super_block * sb = dir->i_sb;
- int retval;
-+ unsigned short reclen = EXT3_DIR_REC_LEN(dentry->d_name.len);
-
-- sb = dir->i_sb;
-+ unsigned nlen, rlen;
-+ u32 block, blocks;
-+ char *top;
-
-- if (!namelen)
-+ if (!dentry->d_name.len)
- return -EINVAL;
-- bh = ext3_bread (handle, dir, 0, 0, &retval);
-- if (!bh)
-- return retval;
-- rec_len = EXT3_DIR_REC_LEN(namelen);
-- offset = 0;
-- de = (struct ext3_dir_entry_2 *) bh->b_data;
-- while (1) {
-- if ((char *)de >= sb->s_blocksize + bh->b_data) {
-- brelse (bh);
-- bh = NULL;
-- bh = ext3_bread (handle, dir,
-- offset >> EXT3_BLOCK_SIZE_BITS(sb), 1, &retval);
-- if (!bh)
-- return retval;
-- if (dir->i_size <= offset) {
-- if (dir->i_size == 0) {
-- brelse(bh);
-- return -ENOENT;
-+ if (ext3_dx && is_dx(dir)) {
-+ struct dx_frame frames[2], *frame;
-+ struct dx_entry *entries, *at;
-+ u32 hash;
-+ char *data1;
-+
-+ hash = dx_hash(dentry->d_name.name, dentry->d_name.len);
-+ /* FIXME: do something if dx_probe() fails here */
-+ frame = dx_probe(dir, hash, frames);
-+ entries = frame->entries;
-+ at = frame->at;
-+
-+ if (!(bh = ext3_bread(handle,dir, dx_get_block(at), 0,&retval)))
-+ goto dxfail1;
-+
-+ BUFFER_TRACE(bh, "get_write_access");
-+ ext3_journal_get_write_access(handle, bh);
-+
-+ data1 = bh->b_data;
-+ de = (ext3_dirent *) data1;
-+ top = data1 + (0? 200: sb->s_blocksize);
-+ while ((char *) de < top)
-+ {
-+ /* FIXME: check EEXIST and dir */
-+ nlen = EXT3_DIR_REC_LEN(de->name_len);
-+ rlen = le16_to_cpu(de->rec_len);
-+ if ((de->inode? rlen - nlen: rlen) >= reclen)
-+ goto dx_add;
-+ de = (ext3_dirent *) ((char *) de + rlen);
-+ }
-+ /* Block full, should compress but for now just split */
-+ dxtrace(printk("using %u of %u node entries\n",
-+ dx_get_count(entries), dx_get_limit(entries)));
-+ /* Need to split index? */
-+ if (dx_get_count(entries) == dx_get_limit(entries))
-+ {
-+ u32 newblock;
-+ unsigned icount = dx_get_count(entries);
-+ int levels = frame - frames;
-+ struct dx_entry *entries2;
-+ struct dx_node *node2;
-+ struct buffer_head *bh2;
-+ if (levels && dx_get_count(frames->entries) == dx_get_limit(frames->entries))
-+ goto dxfull;
-+ bh2 = ext3_append (handle, dir, &newblock, &retval);
-+ if (!(bh2))
-+ goto dxfail2;
-+ node2 = (struct dx_node *)(bh2->b_data);
-+ entries2 = node2->entries;
-+ node2->fake.rec_len = cpu_to_le16(sb->s_blocksize);
-+ node2->fake.inode = 0;
-+ BUFFER_TRACE(frame->bh, "get_write_access");
-+ ext3_journal_get_write_access(handle, frame->bh);
-+ if (levels)
-+ {
-+ unsigned icount1 = icount/2, icount2 = icount - icount1;
-+ unsigned hash2 = dx_get_hash(entries + icount1);
-+ dxtrace(printk("Split index %i/%i\n", icount1, icount2));
-+
-+ BUFFER_TRACE(frame->bh, "get_write_access"); /* index root */
-+ ext3_journal_get_write_access(handle, frames[0].bh);
-+
-+ memcpy ((char *) entries2, (char *) (entries + icount1),
-+ icount2 * sizeof(struct dx_entry));
-+ dx_set_count (entries, icount1);
-+ dx_set_count (entries2, icount2);
-+ dx_set_limit (entries2, dx_node_limit(dir));
-+
-+ /* Which index block gets the new entry? */
-+ if (at - entries >= icount1) {
-+ frame->at = at = at - entries - icount1 + entries2;
-+ frame->entries = entries = entries2;
-+ swap(frame->bh, bh2);
- }
--
-- ext3_debug ("creating next block\n");
--
-- BUFFER_TRACE(bh, "get_write_access");
-- ext3_journal_get_write_access(handle, bh);
-- de = (struct ext3_dir_entry_2 *) bh->b_data;
-- de->inode = 0;
-- de->rec_len = le16_to_cpu(sb->s_blocksize);
-- dir->u.ext3_i.i_disksize =
-- dir->i_size = offset + sb->s_blocksize;
-- dir->u.ext3_i.i_flags &= ~EXT3_INDEX_FL;
-- ext3_mark_inode_dirty(handle, dir);
-+ dx_insert_block (frames + 0, hash2, newblock);
-+ dxtrace(dx_show_index ("node", frames[1].entries));
-+ dxtrace(dx_show_index ("node",
-+ ((struct dx_node *) bh2->b_data)->entries));
-+ ext3_journal_dirty_metadata(handle, bh2);
-+ brelse (bh2);
- } else {
--
-- ext3_debug ("skipping to next block\n");
--
-- de = (struct ext3_dir_entry_2 *) bh->b_data;
-+ dxtrace(printk("Creating second level index...\n"));
-+ memcpy((char *) entries2, (char *) entries,
-+ icount * sizeof(struct dx_entry));
-+ dx_set_limit(entries2, dx_node_limit(dir));
-+
-+ /* Set up root */
-+ dx_set_count(entries, 1);
-+ dx_set_block(entries + 0, newblock);
-+ ((struct dx_root *) frames[0].bh->b_data)->info.indirect_levels = 1;
-+
-+ /* Add new access path frame */
-+ frame = frames + 1;
-+ frame->at = at = at - entries + entries2;
-+ frame->entries = entries = entries2;
-+ frame->bh = bh2;
-+ ext3_journal_get_write_access(handle, frame->bh);
- }
-+ ext3_journal_dirty_metadata(handle, frames[0].bh);
- }
-- if (!ext3_check_dir_entry ("ext3_add_entry", dir, de, bh,
-- offset)) {
-- brelse (bh);
-- return -ENOENT;
-- }
-- if (ext3_match (namelen, name, de)) {
-+ de = do_split(handle, dir, &bh, frame, hash, &retval);
-+ dx_release (frames);
-+ if (!(de))
-+ goto fail;
-+ nlen = EXT3_DIR_REC_LEN(de->name_len);
-+ rlen = le16_to_cpu(de->rec_len);
-+ goto add;
-+
-+dx_add:
-+ dx_release (frames);
-+ goto add;
-+
-+dxfull:
-+ ext3_warning(sb, __FUNCTION__, "Directory index full!\n");
-+ retval = -ENOSPC;
-+dxfail2:
-+ brelse(bh);
-+dxfail1:
-+ dx_release (frames);
-+ goto fail1;
-+ }
-+
-+ blocks = dir->i_size >> sb->s_blocksize_bits;
-+ for (block = 0, offset = 0; block < blocks; block++) {
-+ bh = ext3_bread(handle, dir, block, 0, &retval);
-+ if(!bh)
-+ return retval;
-+ de = (ext3_dirent *)bh->b_data;
-+ top = bh->b_data + sb->s_blocksize - reclen;
-+ while ((char *) de <= top) {
-+ if (!ext3_check_dir_entry("ext3_add_entry", dir, de,
-+ bh, offset)) {
-+ brelse (bh);
-+ return -EIO;
-+ }
-+ if (ext3_match(dentry->d_name.len,dentry->d_name.name,de)) {
- brelse (bh);
- return -EEXIST;
-- }
-- if ((le32_to_cpu(de->inode) == 0 &&
-- le16_to_cpu(de->rec_len) >= rec_len) ||
-- (le16_to_cpu(de->rec_len) >=
-- EXT3_DIR_REC_LEN(de->name_len) + rec_len)) {
-- BUFFER_TRACE(bh, "get_write_access");
-- ext3_journal_get_write_access(handle, bh);
-- /* By now the buffer is marked for journaling */
-- offset += le16_to_cpu(de->rec_len);
-- if (le32_to_cpu(de->inode)) {
-- de1 = (struct ext3_dir_entry_2 *) ((char *) de +
-- EXT3_DIR_REC_LEN(de->name_len));
-- de1->rec_len =
-- cpu_to_le16(le16_to_cpu(de->rec_len) -
-- EXT3_DIR_REC_LEN(de->name_len));
-- de->rec_len = cpu_to_le16(
-- EXT3_DIR_REC_LEN(de->name_len));
-- de = de1;
- }
-- de->file_type = EXT3_FT_UNKNOWN;
-- if (inode) {
-- de->inode = cpu_to_le32(inode->i_ino);
-- ext3_set_de_type(dir->i_sb, de, inode->i_mode);
-- } else
-- de->inode = 0;
-- de->name_len = namelen;
-- memcpy (de->name, name, namelen);
-- /*
-- * XXX shouldn't update any times until successful
-- * completion of syscall, but too many callers depend
-- * on this.
-- *
-- * XXX similarly, too many callers depend on
-- * ext3_new_inode() setting the times, but error
-- * recovery deletes the inode, so the worst that can
-- * happen is that the times are slightly out of date
-- * and/or different from the directory change time.
-- */
-- dir->i_mtime = dir->i_ctime = CURRENT_TIME;
-- dir->u.ext3_i.i_flags &= ~EXT3_INDEX_FL;
-- dir->i_version = ++event;
-- ext3_mark_inode_dirty(handle, dir);
-- BUFFER_TRACE(bh, "call ext3_journal_dirty_metadata");
-- ext3_journal_dirty_metadata(handle, bh);
-+ nlen = EXT3_DIR_REC_LEN(de->name_len);
-+ rlen = le16_to_cpu(de->rec_len);
-+ if ((de->inode ? rlen - nlen: rlen) >= reclen)
-+ goto add;
-+ de = (ext3_dirent *)((char *)de + rlen);
-+ offset += rlen;
-+ }
-+ if (ext3_dx && blocks == 1 && test_opt(sb, INDEX))
-+ goto dx_make_index;
-+ brelse(bh);
-+ }
-+ bh = ext3_append(handle, dir, &block, &retval);
-+ if (!bh)
-+ return retval;
-+ de = (ext3_dirent *) bh->b_data;
-+ de->inode = 0;
-+ de->rec_len = cpu_to_le16(rlen = sb->s_blocksize);
-+ nlen = 0;
-+ goto add;
-+
-+add:
-+ BUFFER_TRACE(bh, "get_write_access");
-+ ext3_journal_get_write_access(handle, bh);
-+ /* By now the buffer is marked for journaling */
-+ if (de->inode) {
-+ ext3_dirent *de1 = (ext3_dirent *)((char *)de + nlen);
-+ de1->rec_len = cpu_to_le16(rlen - nlen);
-+ de->rec_len = cpu_to_le16(nlen);
-+ de = de1;
-+ }
-+ de->file_type = EXT3_FT_UNKNOWN;
-+ if (inode) {
-+ de->inode = cpu_to_le32(inode->i_ino);
-+ ext3_set_de_type(dir->i_sb, de, inode->i_mode);
-+ } else
-+ de->inode = 0;
-+ de->name_len = dentry->d_name.len;
-+ memcpy (de->name, dentry->d_name.name, dentry->d_name.len);
-+ /*
-+ * XXX shouldn't update any times until successful
-+ * completion of syscall, but too many callers depend
-+ * on this.
-+ *
-+ * XXX similarly, too many callers depend on
-+ * ext3_new_inode() setting the times, but error
-+ * recovery deletes the inode, so the worst that can
-+ * happen is that the times are slightly out of date
-+ * and/or different from the directory change time.
-+ */
-+ dir->i_mtime = dir->i_ctime = CURRENT_TIME;
-+ ext3_update_dx_flag(dir);
-+ dir->i_version = ++event;
-+ ext3_mark_inode_dirty(handle, dir);
-+ BUFFER_TRACE(bh, "call ext3_journal_dirty_metadata");
-+ ext3_journal_dirty_metadata(handle, bh);
-+ brelse(bh);
-+ return 0;
-+
-+dx_make_index:
-+ {
-+ struct buffer_head *bh2;
-+ struct dx_root *root;
-+ struct dx_frame frames[2], *frame;
-+ struct dx_entry *entries;
-+ ext3_dirent *de2;
-+ char *data1;
-+ unsigned len;
-+ u32 hash;
-+
-+ dxtrace(printk("Creating index\n"));
-+ ext3_journal_get_write_access(handle, bh);
-+ root = (struct dx_root *) bh->b_data;
-+
-+ EXT3_I(dir)->i_flags |= EXT3_INDEX_FL;
-+ bh2 = ext3_append (handle, dir, &block, &retval);
-+ if (!(bh2))
-+ {
- brelse(bh);
-- return 0;
-+ return retval;
- }
-- offset += le16_to_cpu(de->rec_len);
-- de = (struct ext3_dir_entry_2 *)
-- ((char *) de + le16_to_cpu(de->rec_len));
-+ data1 = bh2->b_data;
-+
-+ /* The 0th block becomes the root, move the dirents out */
-+ de = (struct ext3_dir_entry_2 *)&root->dotdot;
-+ de = (struct ext3_dir_entry_2 *)((char *)de + le16_to_cpu(de->rec_len));
-+ len = ((char *) root) + sb->s_blocksize - (char *) de;
-+ memcpy (data1, de, len);
-+ de = (ext3_dirent *) data1;
-+ top = data1 + len;
-+ while (((char *) de2=(char*)de+le16_to_cpu(de->rec_len)) < top)
-+ de = de2;
-+ de->rec_len = cpu_to_le16(data1 + sb->s_blocksize - (char *)de);
-+ /* Initialize the root; the dot dirents already exist */
-+ de = (ext3_dirent *) (&root->dotdot);
-+ de->rec_len = cpu_to_le16(sb->s_blocksize-EXT3_DIR_REC_LEN(2));
-+ memset (&root->info, 0, sizeof(root->info));
-+ root->info.info_length = sizeof(root->info);
-+ entries = root->entries;
-+ dx_set_block (entries, 1);
-+ dx_set_count (entries, 1);
-+ dx_set_limit (entries, dx_root_limit(dir, sizeof(root->info)));
-+
-+ /* Initialize as for dx_probe */
-+ hash = dx_hash (dentry->d_name.name, dentry->d_name.len);
-+ frame = frames;
-+ frame->entries = entries;
-+ frame->at = entries;
-+ frame->bh = bh;
-+ bh = bh2;
-+ de = do_split(handle,dir, &bh, frame, hash, &retval);
-+ dx_release (frames);
-+ if (!(de))
-+ return retval;
-+ nlen = EXT3_DIR_REC_LEN(de->name_len);
-+ rlen = le16_to_cpu(de->rec_len);
-+ goto add;
- }
-- brelse (bh);
-- return -ENOSPC;
-+fail1:
-+ return retval;
-+fail:
-+ return -ENOENT;
- }
-
- /*
-@@ -451,7 +1212,8 @@
- struct inode * inode;
- int err;
-
-- handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS + 3);
-+ handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
-+ EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
-
-@@ -478,7 +1240,8 @@
- struct inode *inode;
- int err;
-
-- handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS + 3);
-+ handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
-+ EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
-
-@@ -507,7 +1270,8 @@
- if (dir->i_nlink >= EXT3_LINK_MAX)
- return -EMLINK;
-
-- handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS + 3);
-+ handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
-+ EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
-
-@@ -550,7 +1320,7 @@
- if (err)
- goto out_no_entry;
- dir->i_nlink++;
-- dir->u.ext3_i.i_flags &= ~EXT3_INDEX_FL;
-+ ext3_update_dx_flag(dir);
- ext3_mark_inode_dirty(handle, dir);
- d_instantiate(dentry, inode);
- out_stop:
-@@ -832,7 +1596,7 @@
- ext3_mark_inode_dirty(handle, inode);
- dir->i_nlink--;
- inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;
-- dir->u.ext3_i.i_flags &= ~EXT3_INDEX_FL;
-+ ext3_update_dx_flag(dir);
- ext3_mark_inode_dirty(handle, dir);
-
- end_rmdir:
-@@ -878,7 +1642,7 @@
- if (retval)
- goto end_unlink;
- dir->i_ctime = dir->i_mtime = CURRENT_TIME;
-- dir->u.ext3_i.i_flags &= ~EXT3_INDEX_FL;
-+ ext3_update_dx_flag(dir);
- ext3_mark_inode_dirty(handle, dir);
- inode->i_nlink--;
- if (!inode->i_nlink)
-@@ -904,7 +1668,8 @@
- if (l > dir->i_sb->s_blocksize)
- return -ENAMETOOLONG;
-
-- handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS + 5);
-+ handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
-+ EXT3_INDEX_EXTRA_TRANS_BLOCKS + 5);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
-
-@@ -959,7 +1724,8 @@
- if (inode->i_nlink >= EXT3_LINK_MAX)
- return -EMLINK;
-
-- handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS);
-+ handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS +
-+ EXT3_INDEX_EXTRA_TRANS_BLOCKS);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
-
-@@ -995,7 +1761,8 @@
-
- old_bh = new_bh = dir_bh = NULL;
-
-- handle = ext3_journal_start(old_dir, 2 * EXT3_DATA_TRANS_BLOCKS + 2);
-+ handle = ext3_journal_start(old_dir, 2 * EXT3_DATA_TRANS_BLOCKS +
-+ EXT3_INDEX_EXTRA_TRANS_BLOCKS + 2);
- if (IS_ERR(handle))
- return PTR_ERR(handle);
-
-@@ -1069,14 +1837,37 @@
- /*
- * ok, that's it
- */
-- ext3_delete_entry(handle, old_dir, old_de, old_bh);
-+ if (le32_to_cpu(old_de->inode) != old_inode->i_ino ||
-+ old_de->name_len != old_dentry->d_name.len ||
-+ strncmp(old_de->name, old_dentry->d_name.name, old_de->name_len) ||
-+ (retval = ext3_delete_entry(handle, old_dir,
-+ old_de, old_bh)) == -ENOENT) {
-+ /* old_de could have moved from under us during htree split, so
-+ * make sure that we are deleting the right entry. We might
-+ * also be pointing to a stale entry in the unused part of
-+ * old_bh so just checking inum and the name isn't enough. */
-+ struct buffer_head *old_bh2;
-+ struct ext3_dir_entry_2 *old_de2;
-+
-+ old_bh2 = ext3_find_entry(old_dentry, &old_de2);
-+ if (old_bh2) {
-+ retval = ext3_delete_entry(handle, old_dir,
-+ old_de2, old_bh2);
-+ brelse(old_bh2);
-+ }
-+ }
-+ if (retval) {
-+ ext3_warning(old_dir->i_sb, "ext3_rename",
-+ "Deleting old file (%lu), %d, error=%d",
-+ old_dir->i_ino, old_dir->i_nlink, retval);
-+ }
-
- if (new_inode) {
- new_inode->i_nlink--;
- new_inode->i_ctime = CURRENT_TIME;
- }
- old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
-- old_dir->u.ext3_i.i_flags &= ~EXT3_INDEX_FL;
-+ ext3_update_dx_flag(old_dir);
- if (dir_bh) {
- BUFFER_TRACE(dir_bh, "get_write_access");
- ext3_journal_get_write_access(handle, dir_bh);
-@@ -1089,7 +1856,7 @@
- new_inode->i_nlink--;
- } else {
- new_dir->i_nlink++;
-- new_dir->u.ext3_i.i_flags &= ~EXT3_INDEX_FL;
-+ ext3_update_dx_flag(new_dir);
- ext3_mark_inode_dirty(handle, new_dir);
- }
- }
---- ./include/linux/ext3_fs.h 2002/03/05 06:18:59 2.1
-+++ ./include/linux/ext3_fs.h 2002/03/05 06:26:56
-@@ -339,6 +339,7 @@
- #define EXT3_MOUNT_WRITEBACK_DATA 0x0C00 /* No data ordering */
- #define EXT3_MOUNT_UPDATE_JOURNAL 0x1000 /* Update the journal format */
- #define EXT3_MOUNT_NO_UID32 0x2000 /* Disable 32-bit UIDs */
-+#define EXT3_MOUNT_INDEX 0x4000 /* Enable directory index */
-
- /* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */
- #ifndef _LINUX_EXT2_FS_H
-@@ -575,6 +576,24 @@
- #define EXT3_DIR_ROUND (EXT3_DIR_PAD - 1)
- #define EXT3_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT3_DIR_ROUND) & \
- ~EXT3_DIR_ROUND)
-+/*
-+ * Hash Tree Directory indexing
-+ * (c) Daniel Phillips, 2001
-+ */
-+
-+#define CONFIG_EXT3_INDEX
-+
-+#ifdef CONFIG_EXT3_INDEX
-+ enum {ext3_dx = 1};
-+ #define is_dx(dir) (EXT3_I(dir)->i_flags & EXT3_INDEX_FL)
-+#define EXT3_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT3_LINK_MAX)
-+#define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1)
-+#else
-+ enum {ext3_dx = 0};
-+ #define is_dx(dir) 0
-+#define EXT3_DIR_LINK_MAX(dir) ((dir)->i_nlink >= EXT3_LINK_MAX)
-+#define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2)
-+#endif
-
- #ifdef __KERNEL__
- /*
---- ./include/linux/ext3_jbd.h 2002/03/05 06:18:59 2.1
-+++ ./include/linux/ext3_jbd.h 2002/03/05 06:33:54
-@@ -63,6 +63,8 @@
-
- #define EXT3_RESERVE_TRANS_BLOCKS 12
-
-+#define EXT3_INDEX_EXTRA_TRANS_BLOCKS 8
-+
- int
- ext3_mark_iloc_dirty(handle_t *handle,
- struct inode *inode,
+++ /dev/null
- Documentation/Configure.help | 66 ++
- arch/alpha/defconfig | 7
- arch/alpha/kernel/entry.S | 12
- arch/arm/defconfig | 7
- arch/arm/kernel/calls.S | 24
- arch/i386/defconfig | 7
- arch/ia64/defconfig | 7
- arch/ia64/kernel/entry.S | 24
- arch/m68k/defconfig | 7
- arch/mips/defconfig | 7
- arch/mips64/defconfig | 7
- arch/ppc/defconfig | 14
- arch/ppc64/kernel/misc.S | 2
- arch/s390/defconfig | 7
- arch/s390/kernel/entry.S | 24
- arch/s390x/defconfig | 7
- arch/s390x/kernel/entry.S | 24
- arch/s390x/kernel/wrapper32.S | 92 +++
- arch/sparc/defconfig | 7
- arch/sparc/kernel/systbls.S | 10
- arch/sparc64/defconfig | 7
- arch/sparc64/kernel/systbls.S | 20
- fs/Config.in | 14
- fs/Makefile | 3
- fs/ext2/Makefile | 4
- fs/ext2/file.c | 5
- fs/ext2/ialloc.c | 2
- fs/ext2/inode.c | 34 -
- fs/ext2/namei.c | 14
- fs/ext2/super.c | 29
- fs/ext2/symlink.c | 14
- fs/ext2/xattr.c | 1212 +++++++++++++++++++++++++++++++++++++++++
- fs/ext2/xattr_user.c | 103 +++
- fs/ext3/Makefile | 10
- fs/ext3/file.c | 5
- fs/ext3/ialloc.c | 2
- fs/ext3/inode.c | 35 -
- fs/ext3/namei.c | 21
- fs/ext3/super.c | 36 +
- fs/ext3/symlink.c | 14
- fs/ext3/xattr.c | 1225 ++++++++++++++++++++++++++++++++++++++++++
- fs/ext3/xattr_user.c | 111 +++
- fs/jfs/jfs_xattr.h | 6
- fs/jfs/xattr.c | 6
- fs/mbcache.c | 648 ++++++++++++++++++++++
- include/asm-arm/unistd.h | 2
- include/asm-ia64/unistd.h | 13
- include/asm-ppc64/unistd.h | 2
- include/asm-s390/unistd.h | 15
- include/asm-s390x/unistd.h | 15
- include/asm-sparc/unistd.h | 24
- include/asm-sparc64/unistd.h | 24
- include/linux/cache_def.h | 15
- include/linux/errno.h | 4
- include/linux/ext2_fs.h | 31 -
- include/linux/ext2_xattr.h | 157 +++++
- include/linux/ext3_fs.h | 31 -
- include/linux/ext3_jbd.h | 8
- include/linux/ext3_xattr.h | 157 +++++
- include/linux/fs.h | 2
- include/linux/mbcache.h | 69 ++
- kernel/ksyms.c | 4
- mm/vmscan.c | 35 +
- fs/ext3/ext3-exports.c | 14 +
- 64 files changed, 4355 insertions(+), 195 deletions(-)
-
---- linux-2.4.20/Documentation/Configure.help~linux-2.4.20-xattr-0.8.54 2003-05-05 17:43:06.000000000 +0800
-+++ linux-2.4.20-root/Documentation/Configure.help 2003-05-07 18:08:03.000000000 +0800
-@@ -15242,6 +15242,39 @@ CONFIG_EXT2_FS
- be compiled as a module, and so this could be dangerous. Most
- everyone wants to say Y here.
-
-+Ext2 extended attributes
-+CONFIG_EXT2_FS_XATTR
-+ Extended attributes are name:value pairs associated with inodes by
-+ the kernel or by users (see the attr(5) manual page, or visit
-+ <http://acl.bestbits.at/> for details).
-+
-+ If unsure, say N.
-+
-+Ext2 extended attribute block sharing
-+CONFIG_EXT2_FS_XATTR_SHARING
-+ This options enables code for sharing identical extended attribute
-+ blocks among multiple inodes.
-+
-+ Usually, say Y.
-+
-+Ext2 extended user attributes
-+CONFIG_EXT2_FS_XATTR_USER
-+ This option enables extended user attributes on ext2. Processes can
-+ associate extended user attributes with inodes to store additional
-+ information such as the character encoding of files, etc. (see the
-+ attr(5) manual page, or visit <http://acl.bestbits.at/> for details).
-+
-+ If unsure, say N.
-+
-+Ext2 trusted extended attributes
-+CONFIG_EXT2_FS_XATTR_TRUSTED
-+ This option enables extended attributes on ext2 that are accessible
-+ (and visible) only to users capable of CAP_SYS_ADMIN. Usually this
-+ is only the super user. Trusted extended attributes are meant for
-+ implementing system/security services.
-+
-+ If unsure, say N.
-+
- Ext3 journalling file system support (EXPERIMENTAL)
- CONFIG_EXT3_FS
- This is the journalling version of the Second extended file system
-@@ -15274,6 +15307,39 @@ CONFIG_EXT3_FS
- of your root partition (the one containing the directory /) cannot
- be compiled as a module, and so this may be dangerous.
-
-+Ext3 extended attributes
-+CONFIG_EXT3_FS_XATTR
-+ Extended attributes are name:value pairs associated with inodes by
-+ the kernel or by users (see the attr(5) manual page, or visit
-+ <http://acl.bestbits.at/> for details).
-+
-+ If unsure, say N.
-+
-+Ext3 extended attribute block sharing
-+CONFIG_EXT3_FS_XATTR_SHARING
-+ This options enables code for sharing identical extended attribute
-+ blocks among multiple inodes.
-+
-+ Usually, say Y.
-+
-+Ext3 extended user attributes
-+CONFIG_EXT3_FS_XATTR_USER
-+ This option enables extended user attributes on ext3. Processes can
-+ associate extended user attributes with inodes to store additional
-+ information such as the character encoding of files, etc. (see the
-+ attr(5) manual page, or visit <http://acl.bestbits.at/> for details).
-+
-+ If unsure, say N.
-+
-+Ext3 trusted extended attributes
-+CONFIG_EXT3_FS_XATTR_TRUSTED
-+ This option enables extended attributes on ext3 that are accessible
-+ (and visible) only to users capable of CAP_SYS_ADMIN. Usually this
-+ is only the super user. Trusted extended attributes are meant for
-+ implementing system/security services.
-+
-+ If unsure, say N.
-+
- Journal Block Device support (JBD for ext3) (EXPERIMENTAL)
- CONFIG_JBD
- This is a generic journalling layer for block devices. It is
---- linux-2.4.20/arch/alpha/defconfig~linux-2.4.20-xattr-0.8.54 2001-11-20 07:19:42.000000000 +0800
-+++ linux-2.4.20-root/arch/alpha/defconfig 2003-05-07 18:08:03.000000000 +0800
-@@ -1,6 +1,13 @@
- #
- # Automatically generated make config: don't edit
- #
-+CONFIG_EXT3_FS_XATTR=y
-+# CONFIG_EXT3_FS_XATTR_SHARING is not set
-+# CONFIG_EXT3_FS_XATTR_USER is not set
-+# CONFIG_EXT2_FS_XATTR is not set
-+# CONFIG_EXT2_FS_XATTR_SHARING is not set
-+# CONFIG_EXT2_FS_XATTR_USER is not set
-+# CONFIG_FS_MBCACHE is not set
- CONFIG_ALPHA=y
- # CONFIG_UID16 is not set
- # CONFIG_RWSEM_GENERIC_SPINLOCK is not set
---- linux-2.4.20/arch/alpha/kernel/entry.S~linux-2.4.20-xattr-0.8.54 2002-08-03 08:39:42.000000000 +0800
-+++ linux-2.4.20-root/arch/alpha/kernel/entry.S 2003-05-07 18:08:03.000000000 +0800
-@@ -1154,6 +1154,18 @@ sys_call_table:
- .quad sys_readahead
- .quad sys_ni_syscall /* 380, sys_security */
- .quad sys_tkill
-+ .quad sys_setxattr
-+ .quad sys_lsetxattr
-+ .quad sys_fsetxattr
-+ .quad sys_getxattr /* 385 */
-+ .quad sys_lgetxattr
-+ .quad sys_fgetxattr
-+ .quad sys_listxattr
-+ .quad sys_llistxattr
-+ .quad sys_flistxattr /* 390 */
-+ .quad sys_removexattr
-+ .quad sys_lremovexattr
-+ .quad sys_fremovexattr
-
- /* Remember to update everything, kids. */
- .ifne (. - sys_call_table) - (NR_SYSCALLS * 8)
---- linux-2.4.20/arch/arm/defconfig~linux-2.4.20-xattr-0.8.54 2001-05-20 08:43:05.000000000 +0800
-+++ linux-2.4.20-root/arch/arm/defconfig 2003-05-07 18:08:03.000000000 +0800
-@@ -1,6 +1,13 @@
- #
- # Automatically generated make config: don't edit
- #
-+CONFIG_EXT3_FS_XATTR=y
-+# CONFIG_EXT3_FS_XATTR_SHARING is not set
-+# CONFIG_EXT3_FS_XATTR_USER is not set
-+# CONFIG_EXT2_FS_XATTR is not set
-+# CONFIG_EXT2_FS_XATTR_SHARING is not set
-+# CONFIG_EXT2_FS_XATTR_USER is not set
-+# CONFIG_FS_MBCACHE is not set
- CONFIG_ARM=y
- # CONFIG_EISA is not set
- # CONFIG_SBUS is not set
---- linux-2.4.20/arch/arm/kernel/calls.S~linux-2.4.20-xattr-0.8.54 2002-08-03 08:39:42.000000000 +0800
-+++ linux-2.4.20-root/arch/arm/kernel/calls.S 2003-05-07 18:08:03.000000000 +0800
-@@ -240,18 +240,18 @@ __syscall_start:
- .long SYMBOL_NAME(sys_ni_syscall) /* Security */
- .long SYMBOL_NAME(sys_gettid)
- /* 225 */ .long SYMBOL_NAME(sys_readahead)
-- .long SYMBOL_NAME(sys_ni_syscall) /* sys_setxattr */
-- .long SYMBOL_NAME(sys_ni_syscall) /* sys_lsetxattr */
-- .long SYMBOL_NAME(sys_ni_syscall) /* sys_fsetxattr */
-- .long SYMBOL_NAME(sys_ni_syscall) /* sys_getxattr */
--/* 230 */ .long SYMBOL_NAME(sys_ni_syscall) /* sys_lgetxattr */
-- .long SYMBOL_NAME(sys_ni_syscall) /* sys_fgetxattr */
-- .long SYMBOL_NAME(sys_ni_syscall) /* sys_listxattr */
-- .long SYMBOL_NAME(sys_ni_syscall) /* sys_llistxattr */
-- .long SYMBOL_NAME(sys_ni_syscall) /* sys_flistxattr */
--/* 235 */ .long SYMBOL_NAME(sys_ni_syscall) /* sys_removexattr */
-- .long SYMBOL_NAME(sys_ni_syscall) /* sys_lremovexattr */
-- .long SYMBOL_NAME(sys_ni_syscall) /* sys_fremovexattr */
-+ .long SYMBOL_NAME(sys_setxattr)
-+ .long SYMBOL_NAME(sys_lsetxattr)
-+ .long SYMBOL_NAME(sys_fsetxattr)
-+ .long SYMBOL_NAME(sys_getxattr)
-+/* 230 */ .long SYMBOL_NAME(sys_lgetxattr)
-+ .long SYMBOL_NAME(sys_fgetxattr)
-+ .long SYMBOL_NAME(sys_listxattr)
-+ .long SYMBOL_NAME(sys_llistxattr)
-+ .long SYMBOL_NAME(sys_flistxattr)
-+/* 235 */ .long SYMBOL_NAME(sys_removexattr)
-+ .long SYMBOL_NAME(sys_lremovexattr)
-+ .long SYMBOL_NAME(sys_fremovexattr)
- .long SYMBOL_NAME(sys_tkill)
- /*
- * Please check 2.5 _before_ adding calls here,
---- linux-2.4.20/arch/i386/defconfig~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:09.000000000 +0800
-+++ linux-2.4.20-root/arch/i386/defconfig 2003-05-07 18:08:03.000000000 +0800
-@@ -1,6 +1,13 @@
- #
- # Automatically generated make config: don't edit
- #
-+CONFIG_EXT3_FS_XATTR=y
-+# CONFIG_EXT3_FS_XATTR_SHARING is not set
-+# CONFIG_EXT3_FS_XATTR_USER is not set
-+# CONFIG_EXT2_FS_XATTR is not set
-+# CONFIG_EXT2_FS_XATTR_SHARING is not set
-+# CONFIG_EXT2_FS_XATTR_USER is not set
-+# CONFIG_FS_MBCACHE is not set
- CONFIG_X86=y
- CONFIG_ISA=y
- # CONFIG_SBUS is not set
---- linux-2.4.20/arch/ia64/defconfig~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:09.000000000 +0800
-+++ linux-2.4.20-root/arch/ia64/defconfig 2003-05-07 18:08:03.000000000 +0800
-@@ -1,6 +1,13 @@
- #
- # Automatically generated make config: don't edit
- #
-+CONFIG_EXT3_FS_XATTR=y
-+# CONFIG_EXT3_FS_XATTR_SHARING is not set
-+# CONFIG_EXT3_FS_XATTR_USER is not set
-+# CONFIG_EXT2_FS_XATTR is not set
-+# CONFIG_EXT2_FS_XATTR_SHARING is not set
-+# CONFIG_EXT2_FS_XATTR_USER is not set
-+# CONFIG_FS_MBCACHE is not set
-
- #
- # Code maturity level options
---- linux-2.4.20/arch/m68k/defconfig~linux-2.4.20-xattr-0.8.54 2000-06-20 03:56:08.000000000 +0800
-+++ linux-2.4.20-root/arch/m68k/defconfig 2003-05-07 18:08:03.000000000 +0800
-@@ -1,6 +1,13 @@
- #
- # Automatically generated make config: don't edit
- #
-+CONFIG_EXT3_FS_XATTR=y
-+# CONFIG_EXT3_FS_XATTR_SHARING is not set
-+# CONFIG_EXT3_FS_XATTR_USER is not set
-+# CONFIG_EXT2_FS_XATTR is not set
-+# CONFIG_EXT2_FS_XATTR_SHARING is not set
-+# CONFIG_EXT2_FS_XATTR_USER is not set
-+# CONFIG_FS_MBCACHE is not set
- CONFIG_UID16=y
-
- #
---- linux-2.4.20/arch/mips/defconfig~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:10.000000000 +0800
-+++ linux-2.4.20-root/arch/mips/defconfig 2003-05-07 18:08:03.000000000 +0800
-@@ -1,6 +1,13 @@
- #
- # Automatically generated make config: don't edit
- #
-+CONFIG_EXT3_FS_XATTR=y
-+# CONFIG_EXT3_FS_XATTR_SHARING is not set
-+# CONFIG_EXT3_FS_XATTR_USER is not set
-+# CONFIG_EXT2_FS_XATTR is not set
-+# CONFIG_EXT2_FS_XATTR_SHARING is not set
-+# CONFIG_EXT2_FS_XATTR_USER is not set
-+# CONFIG_FS_MBCACHE is not set
- CONFIG_MIPS=y
- CONFIG_MIPS32=y
- # CONFIG_MIPS64 is not set
---- linux-2.4.20/arch/mips64/defconfig~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:10.000000000 +0800
-+++ linux-2.4.20-root/arch/mips64/defconfig 2003-05-07 18:08:03.000000000 +0800
-@@ -1,6 +1,13 @@
- #
- # Automatically generated make config: don't edit
- #
-+CONFIG_EXT3_FS_XATTR=y
-+# CONFIG_EXT3_FS_XATTR_SHARING is not set
-+# CONFIG_EXT3_FS_XATTR_USER is not set
-+# CONFIG_EXT2_FS_XATTR is not set
-+# CONFIG_EXT2_FS_XATTR_SHARING is not set
-+# CONFIG_EXT2_FS_XATTR_USER is not set
-+# CONFIG_FS_MBCACHE is not set
- CONFIG_MIPS=y
- # CONFIG_MIPS32 is not set
- CONFIG_MIPS64=y
---- linux-2.4.20/arch/s390/defconfig~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:11.000000000 +0800
-+++ linux-2.4.20-root/arch/s390/defconfig 2003-05-07 18:08:03.000000000 +0800
-@@ -1,6 +1,13 @@
- #
- # Automatically generated make config: don't edit
- #
-+CONFIG_EXT3_FS_XATTR=y
-+# CONFIG_EXT3_FS_XATTR_SHARING is not set
-+# CONFIG_EXT3_FS_XATTR_USER is not set
-+# CONFIG_EXT2_FS_XATTR is not set
-+# CONFIG_EXT2_FS_XATTR_SHARING is not set
-+# CONFIG_EXT2_FS_XATTR_USER is not set
-+# CONFIG_FS_MBCACHE is not set
- # CONFIG_ISA is not set
- # CONFIG_EISA is not set
- # CONFIG_MCA is not set
---- linux-2.4.20/arch/s390/kernel/entry.S~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:11.000000000 +0800
-+++ linux-2.4.20-root/arch/s390/kernel/entry.S 2003-05-07 18:08:03.000000000 +0800
-@@ -558,18 +558,18 @@ sys_call_table:
- .long sys_fcntl64
- .long sys_ni_syscall
- .long sys_ni_syscall
-- .long sys_ni_syscall /* 224 - reserved for setxattr */
-- .long sys_ni_syscall /* 225 - reserved for lsetxattr */
-- .long sys_ni_syscall /* 226 - reserved for fsetxattr */
-- .long sys_ni_syscall /* 227 - reserved for getxattr */
-- .long sys_ni_syscall /* 228 - reserved for lgetxattr */
-- .long sys_ni_syscall /* 229 - reserved for fgetxattr */
-- .long sys_ni_syscall /* 230 - reserved for listxattr */
-- .long sys_ni_syscall /* 231 - reserved for llistxattr */
-- .long sys_ni_syscall /* 232 - reserved for flistxattr */
-- .long sys_ni_syscall /* 233 - reserved for removexattr */
-- .long sys_ni_syscall /* 234 - reserved for lremovexattr */
-- .long sys_ni_syscall /* 235 - reserved for fremovexattr */
-+ .long sys_setxattr
-+ .long sys_lsetxattr /* 225 */
-+ .long sys_fsetxattr
-+ .long sys_getxattr
-+ .long sys_lgetxattr
-+ .long sys_fgetxattr
-+ .long sys_listxattr /* 230 */
-+ .long sys_llistxattr
-+ .long sys_flistxattr
-+ .long sys_removexattr
-+ .long sys_lremovexattr
-+ .long sys_fremovexattr /* 235 */
- .long sys_gettid
- .long sys_tkill
- .rept 255-237
---- linux-2.4.20/arch/s390x/defconfig~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:11.000000000 +0800
-+++ linux-2.4.20-root/arch/s390x/defconfig 2003-05-07 18:08:03.000000000 +0800
-@@ -1,6 +1,13 @@
- #
- # Automatically generated make config: don't edit
- #
-+CONFIG_EXT3_FS_XATTR=y
-+# CONFIG_EXT3_FS_XATTR_SHARING is not set
-+# CONFIG_EXT3_FS_XATTR_USER is not set
-+# CONFIG_EXT2_FS_XATTR is not set
-+# CONFIG_EXT2_FS_XATTR_SHARING is not set
-+# CONFIG_EXT2_FS_XATTR_USER is not set
-+# CONFIG_FS_MBCACHE is not set
- # CONFIG_ISA is not set
- # CONFIG_EISA is not set
- # CONFIG_MCA is not set
---- linux-2.4.20/arch/s390x/kernel/entry.S~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:11.000000000 +0800
-+++ linux-2.4.20-root/arch/s390x/kernel/entry.S 2003-05-07 18:08:03.000000000 +0800
-@@ -591,18 +591,18 @@ sys_call_table:
- .long SYSCALL(sys_ni_syscall,sys32_fcntl64_wrapper)
- .long SYSCALL(sys_ni_syscall,sys_ni_syscall)
- .long SYSCALL(sys_ni_syscall,sys_ni_syscall)
-- .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 224 - reserved for setxattr */
-- .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 225 - reserved for lsetxattr */
-- .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 226 - reserved for fsetxattr */
-- .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 227 - reserved for getxattr */
-- .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 228 - reserved for lgetxattr */
-- .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 229 - reserved for fgetxattr */
-- .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 230 - reserved for listxattr */
-- .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 231 - reserved for llistxattr */
-- .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 232 - reserved for flistxattr */
-- .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 233 - reserved for removexattr */
-- .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 234 - reserved for lremovexattr */
-- .long SYSCALL(sys_ni_syscall,sys_ni_syscall) /* 235 - reserved for fremovexattr */
-+ .long SYSCALL(sys_setxattr,sys32_setxattr_wrapper)
-+ .long SYSCALL(sys_lsetxattr,sys32_lsetxattr_wrapper) /* 225 */
-+ .long SYSCALL(sys_fsetxattr,sys32_fsetxattr_wrapper)
-+ .long SYSCALL(sys_getxattr,sys32_getxattr_wrapper)
-+ .long SYSCALL(sys_lgetxattr,sys32_lgetxattr_wrapper)
-+ .long SYSCALL(sys_fgetxattr,sys32_fgetxattr_wrapper)
-+ .long SYSCALL(sys_listxattr,sys32_listxattr_wrapper) /* 230 */
-+ .long SYSCALL(sys_llistxattr,sys32_llistxattr_wrapper)
-+ .long SYSCALL(sys_flistxattr,sys32_flistxattr_wrapper)
-+ .long SYSCALL(sys_removexattr,sys32_removexattr_wrapper)
-+ .long SYSCALL(sys_lremovexattr,sys32_lremovexattr_wrapper)
-+ .long SYSCALL(sys_fremovexattr,sys32_fremovexattr_wrapper)/* 235 */
- .long SYSCALL(sys_gettid,sys_gettid)
- .long SYSCALL(sys_tkill,sys_tkill)
- .rept 255-237
---- linux-2.4.20/arch/s390x/kernel/wrapper32.S~linux-2.4.20-xattr-0.8.54 2002-02-26 03:37:56.000000000 +0800
-+++ linux-2.4.20-root/arch/s390x/kernel/wrapper32.S 2003-05-07 18:08:03.000000000 +0800
-@@ -1091,3 +1091,95 @@ sys32_fstat64_wrapper:
- llgtr %r3,%r3 # struct stat64 *
- llgfr %r4,%r4 # long
- jg sys32_fstat64 # branch to system call
-+
-+ .globl sys32_setxattr_wrapper
-+sys32_setxattr_wrapper:
-+ llgtr %r2,%r2 # char *
-+ llgtr %r3,%r3 # char *
-+ llgtr %r4,%r4 # void *
-+ llgfr %r5,%r5 # size_t
-+ lgfr %r6,%r6 # int
-+ jg sys_setxattr
-+
-+ .globl sys32_lsetxattr_wrapper
-+sys32_lsetxattr_wrapper:
-+ llgtr %r2,%r2 # char *
-+ llgtr %r3,%r3 # char *
-+ llgtr %r4,%r4 # void *
-+ llgfr %r5,%r5 # size_t
-+ lgfr %r6,%r6 # int
-+ jg sys_lsetxattr
-+
-+ .globl sys32_fsetxattr_wrapper
-+sys32_fsetxattr_wrapper:
-+ lgfr %r2,%r2 # int
-+ llgtr %r3,%r3 # char *
-+ llgtr %r4,%r4 # void *
-+ llgfr %r5,%r5 # size_t
-+ lgfr %r6,%r6 # int
-+ jg sys_fsetxattr
-+
-+ .globl sys32_getxattr_wrapper
-+sys32_getxattr_wrapper:
-+ llgtr %r2,%r2 # char *
-+ llgtr %r3,%r3 # char *
-+ llgtr %r4,%r4 # void *
-+ llgfr %r5,%r5 # size_t
-+ jg sys_getxattr
-+
-+ .globl sys32_lgetxattr_wrapper
-+sys32_lgetxattr_wrapper:
-+ llgtr %r2,%r2 # char *
-+ llgtr %r3,%r3 # char *
-+ llgtr %r4,%r4 # void *
-+ llgfr %r5,%r5 # size_t
-+ jg sys_lgetxattr
-+
-+ .globl sys32_fgetxattr_wrapper
-+sys32_fgetxattr_wrapper:
-+ lgfr %r2,%r2 # int
-+ llgtr %r3,%r3 # char *
-+ llgtr %r4,%r4 # void *
-+ llgfr %r5,%r5 # size_t
-+ jg sys_fgetxattr
-+
-+ .globl sys32_listxattr_wrapper
-+sys32_listxattr_wrapper:
-+ llgtr %r2,%r2 # char *
-+ llgtr %r3,%r3 # char *
-+ llgfr %r4,%r4 # size_t
-+ jg sys_listxattr
-+
-+ .globl sys32_llistxattr_wrapper
-+sys32_llistxattr_wrapper:
-+ llgtr %r2,%r2 # char *
-+ llgtr %r3,%r3 # char *
-+ llgfr %r4,%r4 # size_t
-+ jg sys_llistxattr
-+
-+ .globl sys32_flistxattr_wrapper
-+sys32_flistxattr_wrapper:
-+ lgfr %r2,%r2 # int
-+ llgtr %r3,%r3 # char *
-+ llgfr %r4,%r4 # size_t
-+ jg sys_flistxattr
-+
-+ .globl sys32_removexattr_wrapper
-+sys32_removexattr_wrapper:
-+ llgtr %r2,%r2 # char *
-+ llgtr %r3,%r3 # char *
-+ jg sys_removexattr
-+
-+ .globl sys32_lremovexattr_wrapper
-+sys32_lremovexattr_wrapper:
-+ llgtr %r2,%r2 # char *
-+ llgtr %r3,%r3 # char *
-+ jg sys_lremovexattr
-+
-+ .globl sys32_fremovexattr_wrapper
-+sys32_fremovexattr_wrapper:
-+ lgfr %r2,%r2 # int
-+ llgtr %r3,%r3 # char *
-+ jg sys_fremovexattr
-+
-+
---- linux-2.4.20/arch/sparc64/defconfig~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:12.000000000 +0800
-+++ linux-2.4.20-root/arch/sparc64/defconfig 2003-05-07 18:08:03.000000000 +0800
-@@ -1,6 +1,13 @@
- #
- # Automatically generated make config: don't edit
- #
-+CONFIG_EXT3_FS_XATTR=y
-+# CONFIG_EXT3_FS_XATTR_SHARING is not set
-+# CONFIG_EXT3_FS_XATTR_USER is not set
-+# CONFIG_EXT2_FS_XATTR is not set
-+# CONFIG_EXT2_FS_XATTR_SHARING is not set
-+# CONFIG_EXT2_FS_XATTR_USER is not set
-+# CONFIG_FS_MBCACHE is not set
-
- #
- # Code maturity level options
---- linux-2.4.20/fs/Config.in~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:15.000000000 +0800
-+++ linux-2.4.20-root/fs/Config.in 2003-05-07 18:08:03.000000000 +0800
-@@ -25,6 +25,11 @@ dep_mbool ' Debug Befs' CONFIG_BEFS_DEB
- dep_tristate 'BFS file system support (EXPERIMENTAL)' CONFIG_BFS_FS $CONFIG_EXPERIMENTAL
-
- tristate 'Ext3 journalling file system support' CONFIG_EXT3_FS
-+dep_mbool ' Ext3 extended attributes' CONFIG_EXT3_FS_XATTR $CONFIG_EXT3_FS
-+dep_bool ' Ext3 extended attribute block sharing' \
-+ CONFIG_EXT3_FS_XATTR_SHARING $CONFIG_EXT3_FS_XATTR
-+dep_bool ' Ext3 extended user attributes' \
-+ CONFIG_EXT3_FS_XATTR_USER $CONFIG_EXT3_FS_XATTR
- # CONFIG_JBD could be its own option (even modular), but until there are
- # other users than ext3, we will simply make it be the same as CONFIG_EXT3_FS
- # dep_tristate ' Journal Block Device support (JBD for ext3)' CONFIG_JBD $CONFIG_EXT3_FS
-@@ -84,6 +89,11 @@ dep_mbool ' QNX4FS write support (DANGE
- tristate 'ROM file system support' CONFIG_ROMFS_FS
-
- tristate 'Second extended fs support' CONFIG_EXT2_FS
-+dep_mbool ' Ext2 extended attributes' CONFIG_EXT2_FS_XATTR $CONFIG_EXT2_FS
-+dep_bool ' Ext2 extended attribute block sharing' \
-+ CONFIG_EXT2_FS_XATTR_SHARING $CONFIG_EXT2_FS_XATTR
-+dep_bool ' Ext2 extended user attributes' \
-+ CONFIG_EXT2_FS_XATTR_USER $CONFIG_EXT2_FS_XATTR
-
- tristate 'System V/Xenix/V7/Coherent file system support' CONFIG_SYSV_FS
-
-@@ -155,6 +165,10 @@ else
- define_tristate CONFIG_ZISOFS_FS n
- fi
-
-+# Meta block cache for Extended Attributes (ext2/ext3)
-+#tristate 'Meta block cache' CONFIG_FS_MBCACHE
-+define_tristate CONFIG_FS_MBCACHE y
-+
- mainmenu_option next_comment
- comment 'Partition Types'
- source fs/partitions/Config.in
---- linux-2.4.20/fs/Makefile~linux-2.4.20-xattr-0.8.54 2003-05-05 19:00:58.000000000 +0800
-+++ linux-2.4.20-root/fs/Makefile 2003-05-07 18:08:03.000000000 +0800
-@@ -79,6 +79,9 @@ obj-y += binfmt_script.o
-
- obj-$(CONFIG_BINFMT_ELF) += binfmt_elf.o
-
-+export-objs += mbcache.o
-+obj-$(CONFIG_FS_MBCACHE) += mbcache.o
-+
- # persistent filesystems
- obj-y += $(join $(subdir-y),$(subdir-y:%=/%.o))
-
---- linux-2.4.20/fs/ext2/Makefile~linux-2.4.20-xattr-0.8.54 2001-10-11 23:05:18.000000000 +0800
-+++ linux-2.4.20-root/fs/ext2/Makefile 2003-05-07 18:08:03.000000000 +0800
-@@ -13,4 +13,8 @@ obj-y := balloc.o bitmap.o dir.o file
- ioctl.o namei.o super.o symlink.o
- obj-m := $(O_TARGET)
-
-+export-objs += xattr.o
-+obj-$(CONFIG_EXT2_FS_XATTR) += xattr.o
-+obj-$(CONFIG_EXT2_FS_XATTR_USER) += xattr_user.o
-+
- include $(TOPDIR)/Rules.make
---- linux-2.4.20/fs/ext2/file.c~linux-2.4.20-xattr-0.8.54 2001-10-11 23:05:18.000000000 +0800
-+++ linux-2.4.20-root/fs/ext2/file.c 2003-05-07 18:08:03.000000000 +0800
-@@ -20,6 +20,7 @@
-
- #include <linux/fs.h>
- #include <linux/ext2_fs.h>
-+#include <linux/ext2_xattr.h>
- #include <linux/sched.h>
-
- /*
-@@ -51,4 +52,8 @@ struct file_operations ext2_file_operati
-
- struct inode_operations ext2_file_inode_operations = {
- truncate: ext2_truncate,
-+ setxattr: ext2_setxattr,
-+ getxattr: ext2_getxattr,
-+ listxattr: ext2_listxattr,
-+ removexattr: ext2_removexattr,
- };
---- linux-2.4.20/fs/ext2/ialloc.c~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:15.000000000 +0800
-+++ linux-2.4.20-root/fs/ext2/ialloc.c 2003-05-07 18:08:03.000000000 +0800
-@@ -15,6 +15,7 @@
- #include <linux/config.h>
- #include <linux/fs.h>
- #include <linux/ext2_fs.h>
-+#include <linux/ext2_xattr.h>
- #include <linux/locks.h>
- #include <linux/quotaops.h>
-
-@@ -167,6 +168,7 @@ void ext2_free_inode (struct inode * ino
- */
- if (!is_bad_inode(inode)) {
- /* Quota is already initialized in iput() */
-+ ext2_xattr_delete_inode(inode);
- DQUOT_FREE_INODE(inode);
- DQUOT_DROP(inode);
- }
---- linux-2.4.20/fs/ext2/inode.c~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:15.000000000 +0800
-+++ linux-2.4.20-root/fs/ext2/inode.c 2003-05-07 18:08:03.000000000 +0800
-@@ -39,6 +39,18 @@ MODULE_LICENSE("GPL");
- static int ext2_update_inode(struct inode * inode, int do_sync);
-
- /*
-+ * Test whether an inode is a fast symlink.
-+ */
-+static inline int ext2_inode_is_fast_symlink(struct inode *inode)
-+{
-+ int ea_blocks = inode->u.ext2_i.i_file_acl ?
-+ (inode->i_sb->s_blocksize >> 9) : 0;
-+
-+ return (S_ISLNK(inode->i_mode) &&
-+ inode->i_blocks - ea_blocks == 0);
-+}
-+
-+/*
- * Called at each iput()
- */
- void ext2_put_inode (struct inode * inode)
-@@ -53,9 +65,7 @@ void ext2_delete_inode (struct inode * i
- {
- lock_kernel();
-
-- if (is_bad_inode(inode) ||
-- inode->i_ino == EXT2_ACL_IDX_INO ||
-- inode->i_ino == EXT2_ACL_DATA_INO)
-+ if (is_bad_inode(inode))
- goto no_delete;
- inode->u.ext2_i.i_dtime = CURRENT_TIME;
- mark_inode_dirty(inode);
-@@ -801,6 +811,8 @@ void ext2_truncate (struct inode * inode
- if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
- S_ISLNK(inode->i_mode)))
- return;
-+ if (ext2_inode_is_fast_symlink(inode))
-+ return;
- if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
- return;
-
-@@ -888,8 +900,7 @@ void ext2_read_inode (struct inode * ino
- unsigned long offset;
- struct ext2_group_desc * gdp;
-
-- if ((inode->i_ino != EXT2_ROOT_INO && inode->i_ino != EXT2_ACL_IDX_INO &&
-- inode->i_ino != EXT2_ACL_DATA_INO &&
-+ if ((inode->i_ino != EXT2_ROOT_INO &&
- inode->i_ino < EXT2_FIRST_INO(inode->i_sb)) ||
- inode->i_ino > le32_to_cpu(inode->i_sb->u.ext2_sb.s_es->s_inodes_count)) {
- ext2_error (inode->i_sb, "ext2_read_inode",
-@@ -974,10 +985,7 @@ void ext2_read_inode (struct inode * ino
- for (block = 0; block < EXT2_N_BLOCKS; block++)
- inode->u.ext2_i.i_data[block] = raw_inode->i_block[block];
-
-- if (inode->i_ino == EXT2_ACL_IDX_INO ||
-- inode->i_ino == EXT2_ACL_DATA_INO)
-- /* Nothing to do */ ;
-- else if (S_ISREG(inode->i_mode)) {
-+ if (S_ISREG(inode->i_mode)) {
- inode->i_op = &ext2_file_inode_operations;
- inode->i_fop = &ext2_file_operations;
- inode->i_mapping->a_ops = &ext2_aops;
-@@ -986,15 +994,17 @@ void ext2_read_inode (struct inode * ino
- inode->i_fop = &ext2_dir_operations;
- inode->i_mapping->a_ops = &ext2_aops;
- } else if (S_ISLNK(inode->i_mode)) {
-- if (!inode->i_blocks)
-+ if (ext2_inode_is_fast_symlink(inode))
- inode->i_op = &ext2_fast_symlink_inode_operations;
- else {
-- inode->i_op = &page_symlink_inode_operations;
-+ inode->i_op = &ext2_symlink_inode_operations;
- inode->i_mapping->a_ops = &ext2_aops;
- }
-- } else
-+ } else {
-+ inode->i_op = &ext2_special_inode_operations;
- init_special_inode(inode, inode->i_mode,
- le32_to_cpu(raw_inode->i_block[0]));
-+ }
- brelse (bh);
- inode->i_attr_flags = 0;
- if (inode->u.ext2_i.i_flags & EXT2_SYNC_FL) {
---- linux-2.4.20/fs/ext2/namei.c~linux-2.4.20-xattr-0.8.54 2001-10-04 13:57:36.000000000 +0800
-+++ linux-2.4.20-root/fs/ext2/namei.c 2003-05-07 18:08:03.000000000 +0800
-@@ -31,6 +31,7 @@
-
- #include <linux/fs.h>
- #include <linux/ext2_fs.h>
-+#include <linux/ext2_xattr.h>
- #include <linux/pagemap.h>
-
- /*
-@@ -136,7 +137,7 @@ static int ext2_symlink (struct inode *
-
- if (l > sizeof (inode->u.ext2_i.i_data)) {
- /* slow symlink */
-- inode->i_op = &page_symlink_inode_operations;
-+ inode->i_op = &ext2_symlink_inode_operations;
- inode->i_mapping->a_ops = &ext2_aops;
- err = block_symlink(inode, symname, l);
- if (err)
-@@ -345,4 +346,15 @@ struct inode_operations ext2_dir_inode_o
- rmdir: ext2_rmdir,
- mknod: ext2_mknod,
- rename: ext2_rename,
-+ setxattr: ext2_setxattr,
-+ getxattr: ext2_getxattr,
-+ listxattr: ext2_listxattr,
-+ removexattr: ext2_removexattr,
-+};
-+
-+struct inode_operations ext2_special_inode_operations = {
-+ setxattr: ext2_setxattr,
-+ getxattr: ext2_getxattr,
-+ listxattr: ext2_listxattr,
-+ removexattr: ext2_removexattr,
- };
---- linux-2.4.20/fs/ext2/super.c~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:15.000000000 +0800
-+++ linux-2.4.20-root/fs/ext2/super.c 2003-05-07 18:08:03.000000000 +0800
-@@ -21,6 +21,7 @@
- #include <linux/string.h>
- #include <linux/fs.h>
- #include <linux/ext2_fs.h>
-+#include <linux/ext2_xattr.h>
- #include <linux/slab.h>
- #include <linux/init.h>
- #include <linux/locks.h>
-@@ -125,6 +126,7 @@ void ext2_put_super (struct super_block
- int db_count;
- int i;
-
-+ ext2_xattr_put_super(sb);
- if (!(sb->s_flags & MS_RDONLY)) {
- struct ext2_super_block *es = EXT2_SB(sb)->s_es;
-
-@@ -175,6 +177,13 @@ static int parse_options (char * options
- this_char = strtok (NULL, ",")) {
- if ((value = strchr (this_char, '=')) != NULL)
- *value++ = 0;
-+#ifdef CONFIG_EXT2_FS_XATTR_USER
-+ if (!strcmp (this_char, "user_xattr"))
-+ set_opt (*mount_options, XATTR_USER);
-+ else if (!strcmp (this_char, "nouser_xattr"))
-+ clear_opt (*mount_options, XATTR_USER);
-+ else
-+#endif
- if (!strcmp (this_char, "bsddf"))
- clear_opt (*mount_options, MINIX_DF);
- else if (!strcmp (this_char, "nouid32")) {
-@@ -424,6 +433,9 @@ struct super_block * ext2_read_super (st
- blocksize = BLOCK_SIZE;
-
- sb->u.ext2_sb.s_mount_opt = 0;
-+#ifdef CONFIG_EXT2_FS_XATTR_USER
-+ /* set_opt (sb->u.ext2_sb.s_mount_opt, XATTR_USER); */
-+#endif
- if (!parse_options ((char *) data, &sb_block, &resuid, &resgid,
- &sb->u.ext2_sb.s_mount_opt)) {
- return NULL;
-@@ -813,12 +825,27 @@ static DECLARE_FSTYPE_DEV(ext2_fs_type,
-
- static int __init init_ext2_fs(void)
- {
-- return register_filesystem(&ext2_fs_type);
-+ int error = init_ext2_xattr();
-+ if (error)
-+ return error;
-+ error = init_ext2_xattr_user();
-+ if (error)
-+ goto fail;
-+ error = register_filesystem(&ext2_fs_type);
-+ if (!error)
-+ return 0;
-+
-+ exit_ext2_xattr_user();
-+fail:
-+ exit_ext2_xattr();
-+ return error;
- }
-
- static void __exit exit_ext2_fs(void)
- {
- unregister_filesystem(&ext2_fs_type);
-+ exit_ext2_xattr_user();
-+ exit_ext2_xattr();
- }
-
- EXPORT_NO_SYMBOLS;
---- linux-2.4.20/fs/ext2/symlink.c~linux-2.4.20-xattr-0.8.54 2000-09-28 04:41:33.000000000 +0800
-+++ linux-2.4.20-root/fs/ext2/symlink.c 2003-05-07 18:08:03.000000000 +0800
-@@ -19,6 +19,7 @@
-
- #include <linux/fs.h>
- #include <linux/ext2_fs.h>
-+#include <linux/ext2_xattr.h>
-
- static int ext2_readlink(struct dentry *dentry, char *buffer, int buflen)
- {
-@@ -32,7 +33,20 @@ static int ext2_follow_link(struct dentr
- return vfs_follow_link(nd, s);
- }
-
-+struct inode_operations ext2_symlink_inode_operations = {
-+ readlink: page_readlink,
-+ follow_link: page_follow_link,
-+ setxattr: ext2_setxattr,
-+ getxattr: ext2_getxattr,
-+ listxattr: ext2_listxattr,
-+ removexattr: ext2_removexattr,
-+};
-+
- struct inode_operations ext2_fast_symlink_inode_operations = {
- readlink: ext2_readlink,
- follow_link: ext2_follow_link,
-+ setxattr: ext2_setxattr,
-+ getxattr: ext2_getxattr,
-+ listxattr: ext2_listxattr,
-+ removexattr: ext2_removexattr,
- };
---- /dev/null 2003-01-30 18:24:37.000000000 +0800
-+++ linux-2.4.20-root/fs/ext2/xattr.c 2003-05-07 18:08:03.000000000 +0800
-@@ -0,0 +1,1212 @@
-+/*
-+ * linux/fs/ext2/xattr.c
-+ *
-+ * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
-+ *
-+ * Fix by Harrison Xing <harrison@mountainviewdata.com>.
-+ * Extended attributes for symlinks and special files added per
-+ * suggestion of Luka Renko <luka.renko@hermes.si>.
-+ */
-+
-+/*
-+ * Extended attributes are stored on disk blocks allocated outside of
-+ * any inode. The i_file_acl field is then made to point to this allocated
-+ * block. If all extended attributes of an inode are identical, these
-+ * inodes may share the same extended attribute block. Such situations
-+ * are automatically detected by keeping a cache of recent attribute block
-+ * numbers and hashes over the block's contents in memory.
-+ *
-+ *
-+ * Extended attribute block layout:
-+ *
-+ * +------------------+
-+ * | header |
-+ * | entry 1 | |
-+ * | entry 2 | | growing downwards
-+ * | entry 3 | v
-+ * | four null bytes |
-+ * | . . . |
-+ * | value 1 | ^
-+ * | value 3 | | growing upwards
-+ * | value 2 | |
-+ * +------------------+
-+ *
-+ * The block header is followed by multiple entry descriptors. These entry
-+ * descriptors are variable in size, and alligned to EXT2_XATTR_PAD
-+ * byte boundaries. The entry descriptors are sorted by attribute name,
-+ * so that two extended attribute blocks can be compared efficiently.
-+ *
-+ * Attribute values are aligned to the end of the block, stored in
-+ * no specific order. They are also padded to EXT2_XATTR_PAD byte
-+ * boundaries. No additional gaps are left between them.
-+ *
-+ * Locking strategy
-+ * ----------------
-+ * The VFS already holds the BKL and the inode->i_sem semaphore when any of
-+ * the xattr inode operations are called, so we are guaranteed that only one
-+ * processes accesses extended attributes of an inode at any time.
-+ *
-+ * For writing we also grab the ext2_xattr_sem semaphore. This ensures that
-+ * only a single process is modifying an extended attribute block, even
-+ * if the block is shared among inodes.
-+ *
-+ * Note for porting to 2.5
-+ * -----------------------
-+ * The BKL will no longer be held in the xattr inode operations.
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/locks.h>
-+#include <linux/slab.h>
-+#include <linux/fs.h>
-+#include <linux/ext2_fs.h>
-+#include <linux/ext2_xattr.h>
-+#include <linux/mbcache.h>
-+#include <linux/quotaops.h>
-+#include <asm/semaphore.h>
-+#include <linux/compatmac.h>
-+
-+/* These symbols may be needed by a module. */
-+EXPORT_SYMBOL(ext2_xattr_register);
-+EXPORT_SYMBOL(ext2_xattr_unregister);
-+EXPORT_SYMBOL(ext2_xattr_get);
-+EXPORT_SYMBOL(ext2_xattr_list);
-+EXPORT_SYMBOL(ext2_xattr_set);
-+
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
-+# define mark_buffer_dirty(bh) mark_buffer_dirty(bh, 1)
-+#endif
-+
-+#define HDR(bh) ((struct ext2_xattr_header *)((bh)->b_data))
-+#define ENTRY(ptr) ((struct ext2_xattr_entry *)(ptr))
-+#define FIRST_ENTRY(bh) ENTRY(HDR(bh)+1)
-+#define IS_LAST_ENTRY(entry) (*(__u32 *)(entry) == 0)
-+
-+#ifdef EXT2_XATTR_DEBUG
-+# define ea_idebug(inode, f...) do { \
-+ printk(KERN_DEBUG "inode %s:%ld: ", \
-+ kdevname(inode->i_dev), inode->i_ino); \
-+ printk(f); \
-+ printk("\n"); \
-+ } while (0)
-+# define ea_bdebug(bh, f...) do { \
-+ printk(KERN_DEBUG "block %s:%ld: ", \
-+ kdevname(bh->b_dev), bh->b_blocknr); \
-+ printk(f); \
-+ printk("\n"); \
-+ } while (0)
-+#else
-+# define ea_idebug(f...)
-+# define ea_bdebug(f...)
-+#endif
-+
-+static int ext2_xattr_set2(struct inode *, struct buffer_head *,
-+ struct ext2_xattr_header *);
-+
-+#ifdef CONFIG_EXT2_FS_XATTR_SHARING
-+
-+static int ext2_xattr_cache_insert(struct buffer_head *);
-+static struct buffer_head *ext2_xattr_cache_find(struct inode *,
-+ struct ext2_xattr_header *);
-+static void ext2_xattr_cache_remove(struct buffer_head *);
-+static void ext2_xattr_rehash(struct ext2_xattr_header *,
-+ struct ext2_xattr_entry *);
-+
-+static struct mb_cache *ext2_xattr_cache;
-+
-+#else
-+# define ext2_xattr_cache_insert(bh) 0
-+# define ext2_xattr_cache_find(inode, header) NULL
-+# define ext2_xattr_cache_remove(bh) while(0) {}
-+# define ext2_xattr_rehash(header, entry) while(0) {}
-+#endif
-+
-+/*
-+ * If a file system does not share extended attributes among inodes,
-+ * we should not need the ext2_xattr_sem semaphore. However, the
-+ * filesystem may still contain shared blocks, so we always take
-+ * the lock.
-+ */
-+
-+DECLARE_MUTEX(ext2_xattr_sem);
-+
-+static inline int
-+ext2_xattr_new_block(struct inode *inode, int * errp, int force)
-+{
-+ struct super_block *sb = inode->i_sb;
-+ int goal = le32_to_cpu(EXT2_SB(sb)->s_es->s_first_data_block) +
-+ EXT2_I(inode)->i_block_group * EXT2_BLOCKS_PER_GROUP(sb);
-+
-+ /* How can we enforce the allocation? */
-+ int block = ext2_new_block(inode, goal, 0, 0, errp);
-+#ifdef OLD_QUOTAS
-+ if (!*errp)
-+ inode->i_blocks += inode->i_sb->s_blocksize >> 9;
-+#endif
-+ return block;
-+}
-+
-+static inline int
-+ext2_xattr_quota_alloc(struct inode *inode, int force)
-+{
-+ /* How can we enforce the allocation? */
-+#ifdef OLD_QUOTAS
-+ int error = DQUOT_ALLOC_BLOCK(inode->i_sb, inode, 1);
-+ if (!error)
-+ inode->i_blocks += inode->i_sb->s_blocksize >> 9;
-+#else
-+ int error = DQUOT_ALLOC_BLOCK(inode, 1);
-+#endif
-+ return error;
-+}
-+
-+#ifdef OLD_QUOTAS
-+
-+static inline void
-+ext2_xattr_quota_free(struct inode *inode)
-+{
-+ DQUOT_FREE_BLOCK(inode->i_sb, inode, 1);
-+ inode->i_blocks -= inode->i_sb->s_blocksize >> 9;
-+}
-+
-+static inline void
-+ext2_xattr_free_block(struct inode * inode, unsigned long block)
-+{
-+ ext2_free_blocks(inode, block, 1);
-+ inode->i_blocks -= inode->i_sb->s_blocksize >> 9;
-+}
-+
-+#else
-+# define ext2_xattr_quota_free(inode) \
-+ DQUOT_FREE_BLOCK(inode, 1)
-+# define ext2_xattr_free_block(inode, block) \
-+ ext2_free_blocks(inode, block, 1)
-+#endif
-+
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,18)
-+
-+static inline struct buffer_head *
-+sb_bread(struct super_block *sb, int block)
-+{
-+ return bread(sb->s_dev, block, sb->s_blocksize);
-+}
-+
-+static inline struct buffer_head *
-+sb_getblk(struct super_block *sb, int block)
-+{
-+ return getblk(sb->s_dev, block, sb->s_blocksize);
-+}
-+
-+#endif
-+
-+struct ext2_xattr_handler *ext2_xattr_handlers[EXT2_XATTR_INDEX_MAX];
-+rwlock_t ext2_handler_lock = RW_LOCK_UNLOCKED;
-+
-+int
-+ext2_xattr_register(int name_index, struct ext2_xattr_handler *handler)
-+{
-+ int error = -EINVAL;
-+
-+ if (name_index > 0 && name_index <= EXT2_XATTR_INDEX_MAX) {
-+ write_lock(&ext2_handler_lock);
-+ if (!ext2_xattr_handlers[name_index-1]) {
-+ ext2_xattr_handlers[name_index-1] = handler;
-+ error = 0;
-+ }
-+ write_unlock(&ext2_handler_lock);
-+ }
-+ return error;
-+}
-+
-+void
-+ext2_xattr_unregister(int name_index, struct ext2_xattr_handler *handler)
-+{
-+ if (name_index > 0 || name_index <= EXT2_XATTR_INDEX_MAX) {
-+ write_lock(&ext2_handler_lock);
-+ ext2_xattr_handlers[name_index-1] = NULL;
-+ write_unlock(&ext2_handler_lock);
-+ }
-+}
-+
-+static inline const char *
-+strcmp_prefix(const char *a, const char *a_prefix)
-+{
-+ while (*a_prefix && *a == *a_prefix) {
-+ a++;
-+ a_prefix++;
-+ }
-+ return *a_prefix ? NULL : a;
-+}
-+
-+/*
-+ * Decode the extended attribute name, and translate it into
-+ * the name_index and name suffix.
-+ */
-+static struct ext2_xattr_handler *
-+ext2_xattr_resolve_name(const char **name)
-+{
-+ struct ext2_xattr_handler *handler = NULL;
-+ int i;
-+
-+ if (!*name)
-+ return NULL;
-+ read_lock(&ext2_handler_lock);
-+ for (i=0; i<EXT2_XATTR_INDEX_MAX; i++) {
-+ if (ext2_xattr_handlers[i]) {
-+ const char *n = strcmp_prefix(*name,
-+ ext2_xattr_handlers[i]->prefix);
-+ if (n) {
-+ handler = ext2_xattr_handlers[i];
-+ *name = n;
-+ break;
-+ }
-+ }
-+ }
-+ read_unlock(&ext2_handler_lock);
-+ return handler;
-+}
-+
-+static inline struct ext2_xattr_handler *
-+ext2_xattr_handler(int name_index)
-+{
-+ struct ext2_xattr_handler *handler = NULL;
-+ if (name_index > 0 && name_index <= EXT2_XATTR_INDEX_MAX) {
-+ read_lock(&ext2_handler_lock);
-+ handler = ext2_xattr_handlers[name_index-1];
-+ read_unlock(&ext2_handler_lock);
-+ }
-+ return handler;
-+}
-+
-+/*
-+ * Inode operation getxattr()
-+ *
-+ * dentry->d_inode->i_sem down
-+ * BKL held [before 2.5.x]
-+ */
-+ssize_t
-+ext2_getxattr(struct dentry *dentry, const char *name,
-+ void *buffer, size_t size)
-+{
-+ struct ext2_xattr_handler *handler;
-+ struct inode *inode = dentry->d_inode;
-+
-+ handler = ext2_xattr_resolve_name(&name);
-+ if (!handler)
-+ return -ENOTSUP;
-+ return handler->get(inode, name, buffer, size);
-+}
-+
-+/*
-+ * Inode operation listxattr()
-+ *
-+ * dentry->d_inode->i_sem down
-+ * BKL held [before 2.5.x]
-+ */
-+ssize_t
-+ext2_listxattr(struct dentry *dentry, char *buffer, size_t size)
-+{
-+ return ext2_xattr_list(dentry->d_inode, buffer, size);
-+}
-+
-+/*
-+ * Inode operation setxattr()
-+ *
-+ * dentry->d_inode->i_sem down
-+ * BKL held [before 2.5.x]
-+ */
-+int
-+ext2_setxattr(struct dentry *dentry, const char *name,
-+ const void *value, size_t size, int flags)
-+{
-+ struct ext2_xattr_handler *handler;
-+ struct inode *inode = dentry->d_inode;
-+
-+ if (size == 0)
-+ value = ""; /* empty EA, do not remove */
-+ handler = ext2_xattr_resolve_name(&name);
-+ if (!handler)
-+ return -ENOTSUP;
-+ return handler->set(inode, name, value, size, flags);
-+}
-+
-+/*
-+ * Inode operation removexattr()
-+ *
-+ * dentry->d_inode->i_sem down
-+ * BKL held [before 2.5.x]
-+ */
-+int
-+ext2_removexattr(struct dentry *dentry, const char *name)
-+{
-+ struct ext2_xattr_handler *handler;
-+ struct inode *inode = dentry->d_inode;
-+
-+ handler = ext2_xattr_resolve_name(&name);
-+ if (!handler)
-+ return -ENOTSUP;
-+ return handler->set(inode, name, NULL, 0, XATTR_REPLACE);
-+}
-+
-+/*
-+ * ext2_xattr_get()
-+ *
-+ * Copy an extended attribute into the buffer
-+ * provided, or compute the buffer size required.
-+ * Buffer is NULL to compute the size of the buffer required.
-+ *
-+ * Returns a negative error number on failure, or the number of bytes
-+ * used / required on success.
-+ */
-+int
-+ext2_xattr_get(struct inode *inode, int name_index, const char *name,
-+ void *buffer, size_t buffer_size)
-+{
-+ struct buffer_head *bh = NULL;
-+ struct ext2_xattr_entry *entry;
-+ unsigned int block, size;
-+ char *end;
-+ int name_len, error;
-+
-+ ea_idebug(inode, "name=%d.%s, buffer=%p, buffer_size=%ld",
-+ name_index, name, buffer, (long)buffer_size);
-+
-+ if (name == NULL)
-+ return -EINVAL;
-+ if (!EXT2_I(inode)->i_file_acl)
-+ return -ENOATTR;
-+ block = EXT2_I(inode)->i_file_acl;
-+ ea_idebug(inode, "reading block %d", block);
-+ bh = sb_bread(inode->i_sb, block);
-+ if (!bh)
-+ return -EIO;
-+ ea_bdebug(bh, "b_count=%d, refcount=%d",
-+ atomic_read(&(bh->b_count)), le32_to_cpu(HDR(bh)->h_refcount));
-+ end = bh->b_data + bh->b_size;
-+ if (HDR(bh)->h_magic != cpu_to_le32(EXT2_XATTR_MAGIC) ||
-+ HDR(bh)->h_blocks != cpu_to_le32(1)) {
-+bad_block: ext2_error(inode->i_sb, "ext2_xattr_get",
-+ "inode %ld: bad block %d", inode->i_ino, block);
-+ error = -EIO;
-+ goto cleanup;
-+ }
-+ /* find named attribute */
-+ name_len = strlen(name);
-+
-+ error = -ERANGE;
-+ if (name_len > 255)
-+ goto cleanup;
-+ entry = FIRST_ENTRY(bh);
-+ while (!IS_LAST_ENTRY(entry)) {
-+ struct ext2_xattr_entry *next =
-+ EXT2_XATTR_NEXT(entry);
-+ if ((char *)next >= end)
-+ goto bad_block;
-+ if (name_index == entry->e_name_index &&
-+ name_len == entry->e_name_len &&
-+ memcmp(name, entry->e_name, name_len) == 0)
-+ goto found;
-+ entry = next;
-+ }
-+ /* Check the remaining name entries */
-+ while (!IS_LAST_ENTRY(entry)) {
-+ struct ext2_xattr_entry *next =
-+ EXT2_XATTR_NEXT(entry);
-+ if ((char *)next >= end)
-+ goto bad_block;
-+ entry = next;
-+ }
-+ if (ext2_xattr_cache_insert(bh))
-+ ea_idebug(inode, "cache insert failed");
-+ error = -ENOATTR;
-+ goto cleanup;
-+found:
-+ /* check the buffer size */
-+ if (entry->e_value_block != 0)
-+ goto bad_block;
-+ size = le32_to_cpu(entry->e_value_size);
-+ if (size > inode->i_sb->s_blocksize ||
-+ le16_to_cpu(entry->e_value_offs) + size > inode->i_sb->s_blocksize)
-+ goto bad_block;
-+
-+ if (ext2_xattr_cache_insert(bh))
-+ ea_idebug(inode, "cache insert failed");
-+ if (buffer) {
-+ error = -ERANGE;
-+ if (size > buffer_size)
-+ goto cleanup;
-+ /* return value of attribute */
-+ memcpy(buffer, bh->b_data + le16_to_cpu(entry->e_value_offs),
-+ size);
-+ }
-+ error = size;
-+
-+cleanup:
-+ brelse(bh);
-+
-+ return error;
-+}
-+
-+/*
-+ * ext2_xattr_list()
-+ *
-+ * Copy a list of attribute names into the buffer
-+ * provided, or compute the buffer size required.
-+ * Buffer is NULL to compute the size of the buffer required.
-+ *
-+ * Returns a negative error number on failure, or the number of bytes
-+ * used / required on success.
-+ */
-+int
-+ext2_xattr_list(struct inode *inode, char *buffer, size_t buffer_size)
-+{
-+ struct buffer_head *bh = NULL;
-+ struct ext2_xattr_entry *entry;
-+ unsigned int block, size = 0;
-+ char *buf, *end;
-+ int error;
-+
-+ ea_idebug(inode, "buffer=%p, buffer_size=%ld",
-+ buffer, (long)buffer_size);
-+
-+ if (!EXT2_I(inode)->i_file_acl)
-+ return 0;
-+ block = EXT2_I(inode)->i_file_acl;
-+ ea_idebug(inode, "reading block %d", block);
-+ bh = sb_bread(inode->i_sb, block);
-+ if (!bh)
-+ return -EIO;
-+ ea_bdebug(bh, "b_count=%d, refcount=%d",
-+ atomic_read(&(bh->b_count)), le32_to_cpu(HDR(bh)->h_refcount));
-+ end = bh->b_data + bh->b_size;
-+ if (HDR(bh)->h_magic != cpu_to_le32(EXT2_XATTR_MAGIC) ||
-+ HDR(bh)->h_blocks != cpu_to_le32(1)) {
-+bad_block: ext2_error(inode->i_sb, "ext2_xattr_list",
-+ "inode %ld: bad block %d", inode->i_ino, block);
-+ error = -EIO;
-+ goto cleanup;
-+ }
-+ /* compute the size required for the list of attribute names */
-+ for (entry = FIRST_ENTRY(bh); !IS_LAST_ENTRY(entry);
-+ entry = EXT2_XATTR_NEXT(entry)) {
-+ struct ext2_xattr_handler *handler;
-+ struct ext2_xattr_entry *next =
-+ EXT2_XATTR_NEXT(entry);
-+ if ((char *)next >= end)
-+ goto bad_block;
-+
-+ handler = ext2_xattr_handler(entry->e_name_index);
-+ if (handler)
-+ size += handler->list(NULL, inode, entry->e_name,
-+ entry->e_name_len);
-+ }
-+
-+ if (ext2_xattr_cache_insert(bh))
-+ ea_idebug(inode, "cache insert failed");
-+ if (!buffer) {
-+ error = size;
-+ goto cleanup;
-+ } else {
-+ error = -ERANGE;
-+ if (size > buffer_size)
-+ goto cleanup;
-+ }
-+
-+ /* list the attribute names */
-+ buf = buffer;
-+ for (entry = FIRST_ENTRY(bh); !IS_LAST_ENTRY(entry);
-+ entry = EXT2_XATTR_NEXT(entry)) {
-+ struct ext2_xattr_handler *handler;
-+
-+ handler = ext2_xattr_handler(entry->e_name_index);
-+ if (handler)
-+ buf += handler->list(buf, inode, entry->e_name,
-+ entry->e_name_len);
-+ }
-+ error = size;
-+
-+cleanup:
-+ brelse(bh);
-+
-+ return error;
-+}
-+
-+/*
-+ * If the EXT2_FEATURE_COMPAT_EXT_ATTR feature of this file system is
-+ * not set, set it.
-+ */
-+static void ext2_xattr_update_super_block(struct super_block *sb)
-+{
-+ if (EXT2_HAS_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR))
-+ return;
-+
-+ lock_super(sb);
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
-+ EXT2_SB(sb)->s_feature_compat |= EXT2_FEATURE_COMPAT_EXT_ATTR;
-+#endif
-+ EXT2_SB(sb)->s_es->s_feature_compat |=
-+ cpu_to_le32(EXT2_FEATURE_COMPAT_EXT_ATTR);
-+ sb->s_dirt = 1;
-+ mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
-+ unlock_super(sb);
-+}
-+
-+/*
-+ * ext2_xattr_set()
-+ *
-+ * Create, replace or remove an extended attribute for this inode. Buffer
-+ * is NULL to remove an existing extended attribute, and non-NULL to
-+ * either replace an existing extended attribute, or create a new extended
-+ * attribute. The flags XATTR_REPLACE and XATTR_CREATE
-+ * specify that an extended attribute must exist and must not exist
-+ * previous to the call, respectively.
-+ *
-+ * Returns 0, or a negative error number on failure.
-+ */
-+int
-+ext2_xattr_set(struct inode *inode, int name_index, const char *name,
-+ const void *value, size_t value_len, int flags)
-+{
-+ struct super_block *sb = inode->i_sb;
-+ struct buffer_head *bh = NULL;
-+ struct ext2_xattr_header *header = NULL;
-+ struct ext2_xattr_entry *here, *last;
-+ unsigned int name_len;
-+ int block = EXT2_I(inode)->i_file_acl;
-+ int min_offs = sb->s_blocksize, not_found = 1, free, error;
-+ char *end;
-+
-+ /*
-+ * header -- Points either into bh, or to a temporarily
-+ * allocated buffer.
-+ * here -- The named entry found, or the place for inserting, within
-+ * the block pointed to by header.
-+ * last -- Points right after the last named entry within the block
-+ * pointed to by header.
-+ * min_offs -- The offset of the first value (values are aligned
-+ * towards the end of the block).
-+ * end -- Points right after the block pointed to by header.
-+ */
-+
-+ ea_idebug(inode, "name=%d.%s, value=%p, value_len=%ld",
-+ name_index, name, value, (long)value_len);
-+
-+ if (IS_RDONLY(inode))
-+ return -EROFS;
-+ if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
-+ return -EPERM;
-+ if (value == NULL)
-+ value_len = 0;
-+ if (name == NULL)
-+ return -EINVAL;
-+ name_len = strlen(name);
-+ if (name_len > 255 || value_len > sb->s_blocksize)
-+ return -ERANGE;
-+ down(&ext2_xattr_sem);
-+
-+ if (block) {
-+ /* The inode already has an extended attribute block. */
-+
-+ bh = sb_bread(sb, block);
-+ error = -EIO;
-+ if (!bh)
-+ goto cleanup;
-+ ea_bdebug(bh, "b_count=%d, refcount=%d",
-+ atomic_read(&(bh->b_count)),
-+ le32_to_cpu(HDR(bh)->h_refcount));
-+ header = HDR(bh);
-+ end = bh->b_data + bh->b_size;
-+ if (header->h_magic != cpu_to_le32(EXT2_XATTR_MAGIC) ||
-+ header->h_blocks != cpu_to_le32(1)) {
-+bad_block: ext2_error(sb, "ext2_xattr_set",
-+ "inode %ld: bad block %d", inode->i_ino, block);
-+ error = -EIO;
-+ goto cleanup;
-+ }
-+ /* Find the named attribute. */
-+ here = FIRST_ENTRY(bh);
-+ while (!IS_LAST_ENTRY(here)) {
-+ struct ext2_xattr_entry *next = EXT2_XATTR_NEXT(here);
-+ if ((char *)next >= end)
-+ goto bad_block;
-+ if (!here->e_value_block && here->e_value_size) {
-+ int offs = le16_to_cpu(here->e_value_offs);
-+ if (offs < min_offs)
-+ min_offs = offs;
-+ }
-+ not_found = name_index - here->e_name_index;
-+ if (!not_found)
-+ not_found = name_len - here->e_name_len;
-+ if (!not_found)
-+ not_found = memcmp(name, here->e_name,name_len);
-+ if (not_found <= 0)
-+ break;
-+ here = next;
-+ }
-+ last = here;
-+ /* We still need to compute min_offs and last. */
-+ while (!IS_LAST_ENTRY(last)) {
-+ struct ext2_xattr_entry *next = EXT2_XATTR_NEXT(last);
-+ if ((char *)next >= end)
-+ goto bad_block;
-+ if (!last->e_value_block && last->e_value_size) {
-+ int offs = le16_to_cpu(last->e_value_offs);
-+ if (offs < min_offs)
-+ min_offs = offs;
-+ }
-+ last = next;
-+ }
-+
-+ /* Check whether we have enough space left. */
-+ free = min_offs - ((char*)last - (char*)header) - sizeof(__u32);
-+ } else {
-+ /* We will use a new extended attribute block. */
-+ free = sb->s_blocksize -
-+ sizeof(struct ext2_xattr_header) - sizeof(__u32);
-+ here = last = NULL; /* avoid gcc uninitialized warning. */
-+ }
-+
-+ if (not_found) {
-+ /* Request to remove a nonexistent attribute? */
-+ error = -ENOATTR;
-+ if (flags & XATTR_REPLACE)
-+ goto cleanup;
-+ error = 0;
-+ if (value == NULL)
-+ goto cleanup;
-+ else
-+ free -= EXT2_XATTR_LEN(name_len);
-+ } else {
-+ /* Request to create an existing attribute? */
-+ error = -EEXIST;
-+ if (flags & XATTR_CREATE)
-+ goto cleanup;
-+ if (!here->e_value_block && here->e_value_size) {
-+ unsigned int size = le32_to_cpu(here->e_value_size);
-+
-+ if (le16_to_cpu(here->e_value_offs) + size >
-+ sb->s_blocksize || size > sb->s_blocksize)
-+ goto bad_block;
-+ free += EXT2_XATTR_SIZE(size);
-+ }
-+ }
-+ free -= EXT2_XATTR_SIZE(value_len);
-+ error = -ENOSPC;
-+ if (free < 0)
-+ goto cleanup;
-+
-+ /* Here we know that we can set the new attribute. */
-+
-+ if (header) {
-+ if (header->h_refcount == cpu_to_le32(1)) {
-+ ea_bdebug(bh, "modifying in-place");
-+ ext2_xattr_cache_remove(bh);
-+ } else {
-+ int offset;
-+
-+ ea_bdebug(bh, "cloning");
-+ header = kmalloc(bh->b_size, GFP_KERNEL);
-+ error = -ENOMEM;
-+ if (header == NULL)
-+ goto cleanup;
-+ memcpy(header, HDR(bh), bh->b_size);
-+ header->h_refcount = cpu_to_le32(1);
-+ offset = (char *)header - bh->b_data;
-+ here = ENTRY((char *)here + offset);
-+ last = ENTRY((char *)last + offset);
-+ }
-+ } else {
-+ /* Allocate a buffer where we construct the new block. */
-+ header = kmalloc(sb->s_blocksize, GFP_KERNEL);
-+ error = -ENOMEM;
-+ if (header == NULL)
-+ goto cleanup;
-+ memset(header, 0, sb->s_blocksize);
-+ end = (char *)header + sb->s_blocksize;
-+ header->h_magic = cpu_to_le32(EXT2_XATTR_MAGIC);
-+ header->h_blocks = header->h_refcount = cpu_to_le32(1);
-+ last = here = ENTRY(header+1);
-+ }
-+
-+ if (not_found) {
-+ /* Insert the new name. */
-+ int size = EXT2_XATTR_LEN(name_len);
-+ int rest = (char *)last - (char *)here;
-+ memmove((char *)here + size, here, rest);
-+ memset(here, 0, size);
-+ here->e_name_index = name_index;
-+ here->e_name_len = name_len;
-+ memcpy(here->e_name, name, name_len);
-+ } else {
-+ /* Remove the old value. */
-+ if (!here->e_value_block && here->e_value_size) {
-+ char *first_val = (char *)header + min_offs;
-+ int offs = le16_to_cpu(here->e_value_offs);
-+ char *val = (char *)header + offs;
-+ size_t size = EXT2_XATTR_SIZE(
-+ le32_to_cpu(here->e_value_size));
-+ memmove(first_val + size, first_val, val - first_val);
-+ memset(first_val, 0, size);
-+ here->e_value_offs = 0;
-+ min_offs += size;
-+
-+ /* Adjust all value offsets. */
-+ last = ENTRY(header+1);
-+ while (!IS_LAST_ENTRY(last)) {
-+ int o = le16_to_cpu(last->e_value_offs);
-+ if (!last->e_value_block && o < offs)
-+ last->e_value_offs =
-+ cpu_to_le16(o + size);
-+ last = EXT2_XATTR_NEXT(last);
-+ }
-+ }
-+ if (value == NULL) {
-+ /* Remove this attribute. */
-+ if (EXT2_XATTR_NEXT(ENTRY(header+1)) == last) {
-+ /* This block is now empty. */
-+ error = ext2_xattr_set2(inode, bh, NULL);
-+ goto cleanup;
-+ } else {
-+ /* Remove the old name. */
-+ int size = EXT2_XATTR_LEN(name_len);
-+ last = ENTRY((char *)last - size);
-+ memmove(here, (char*)here + size,
-+ (char*)last - (char*)here);
-+ memset(last, 0, size);
-+ }
-+ }
-+ }
-+
-+ if (value != NULL) {
-+ /* Insert the new value. */
-+ here->e_value_size = cpu_to_le32(value_len);
-+ if (value_len) {
-+ size_t size = EXT2_XATTR_SIZE(value_len);
-+ char *val = (char *)header + min_offs - size;
-+ here->e_value_offs =
-+ cpu_to_le16((char *)val - (char *)header);
-+ memset(val + size - EXT2_XATTR_PAD, 0,
-+ EXT2_XATTR_PAD); /* Clear the pad bytes. */
-+ memcpy(val, value, value_len);
-+ }
-+ }
-+ ext2_xattr_rehash(header, here);
-+
-+ error = ext2_xattr_set2(inode, bh, header);
-+
-+cleanup:
-+ brelse(bh);
-+ if (!(bh && header == HDR(bh)))
-+ kfree(header);
-+ up(&ext2_xattr_sem);
-+
-+ return error;
-+}
-+
-+/*
-+ * Second half of ext2_xattr_set(): Update the file system.
-+ */
-+static int
-+ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
-+ struct ext2_xattr_header *header)
-+{
-+ struct super_block *sb = inode->i_sb;
-+ struct buffer_head *new_bh = NULL;
-+ int error;
-+
-+ if (header) {
-+ new_bh = ext2_xattr_cache_find(inode, header);
-+ if (new_bh) {
-+ /*
-+ * We found an identical block in the cache.
-+ * The old block will be released after updating
-+ * the inode.
-+ */
-+ ea_bdebug(old_bh, "reusing block %ld",
-+ new_bh->b_blocknr);
-+
-+ error = -EDQUOT;
-+ if (ext2_xattr_quota_alloc(inode, 1))
-+ goto cleanup;
-+
-+ HDR(new_bh)->h_refcount = cpu_to_le32(
-+ le32_to_cpu(HDR(new_bh)->h_refcount) + 1);
-+ ea_bdebug(new_bh, "refcount now=%d",
-+ le32_to_cpu(HDR(new_bh)->h_refcount));
-+ } else if (old_bh && header == HDR(old_bh)) {
-+ /* Keep this block. */
-+ new_bh = old_bh;
-+ (void)ext2_xattr_cache_insert(new_bh);
-+ } else {
-+ /* We need to allocate a new block */
-+ int force = EXT2_I(inode)->i_file_acl != 0;
-+ int block = ext2_xattr_new_block(inode, &error, force);
-+ if (error)
-+ goto cleanup;
-+ ea_idebug(inode, "creating block %d", block);
-+
-+ new_bh = sb_getblk(sb, block);
-+ if (!new_bh) {
-+ ext2_xattr_free_block(inode, block);
-+ error = -EIO;
-+ goto cleanup;
-+ }
-+ lock_buffer(new_bh);
-+ memcpy(new_bh->b_data, header, new_bh->b_size);
-+ mark_buffer_uptodate(new_bh, 1);
-+ unlock_buffer(new_bh);
-+ (void)ext2_xattr_cache_insert(new_bh);
-+
-+ ext2_xattr_update_super_block(sb);
-+ }
-+ mark_buffer_dirty(new_bh);
-+ if (IS_SYNC(inode)) {
-+ ll_rw_block(WRITE, 1, &new_bh);
-+ wait_on_buffer(new_bh);
-+ error = -EIO;
-+ if (buffer_req(new_bh) && !buffer_uptodate(new_bh))
-+ goto cleanup;
-+ }
-+ }
-+
-+ /* Update the inode. */
-+ EXT2_I(inode)->i_file_acl = new_bh ? new_bh->b_blocknr : 0;
-+ inode->i_ctime = CURRENT_TIME;
-+ if (IS_SYNC(inode)) {
-+ error = ext2_sync_inode (inode);
-+ if (error)
-+ goto cleanup;
-+ } else
-+ mark_inode_dirty(inode);
-+
-+ error = 0;
-+ if (old_bh && old_bh != new_bh) {
-+ /*
-+ * If there was an old block, and we are not still using it,
-+ * we now release the old block.
-+ */
-+ unsigned int refcount = le32_to_cpu(HDR(old_bh)->h_refcount);
-+
-+ if (refcount == 1) {
-+ /* Free the old block. */
-+ ea_bdebug(old_bh, "freeing");
-+ ext2_xattr_free_block(inode, old_bh->b_blocknr);
-+ mark_buffer_clean(old_bh);
-+ } else {
-+ /* Decrement the refcount only. */
-+ refcount--;
-+ HDR(old_bh)->h_refcount = cpu_to_le32(refcount);
-+ ext2_xattr_quota_free(inode);
-+ mark_buffer_dirty(old_bh);
-+ ea_bdebug(old_bh, "refcount now=%d", refcount);
-+ }
-+ }
-+
-+cleanup:
-+ if (old_bh != new_bh)
-+ brelse(new_bh);
-+
-+ return error;
-+}
-+
-+/*
-+ * ext2_xattr_delete_inode()
-+ *
-+ * Free extended attribute resources associated with this inode. This
-+ * is called immediately before an inode is freed.
-+ */
-+void
-+ext2_xattr_delete_inode(struct inode *inode)
-+{
-+ struct buffer_head *bh;
-+ unsigned int block = EXT2_I(inode)->i_file_acl;
-+
-+ if (!block)
-+ return;
-+ down(&ext2_xattr_sem);
-+
-+ bh = sb_bread(inode->i_sb, block);
-+ if (!bh) {
-+ ext2_error(inode->i_sb, "ext2_xattr_delete_inode",
-+ "inode %ld: block %d read error", inode->i_ino, block);
-+ goto cleanup;
-+ }
-+ ea_bdebug(bh, "b_count=%d", atomic_read(&(bh->b_count)));
-+ if (HDR(bh)->h_magic != cpu_to_le32(EXT2_XATTR_MAGIC) ||
-+ HDR(bh)->h_blocks != cpu_to_le32(1)) {
-+ ext2_error(inode->i_sb, "ext2_xattr_delete_inode",
-+ "inode %ld: bad block %d", inode->i_ino, block);
-+ goto cleanup;
-+ }
-+ ea_bdebug(bh, "refcount now=%d", le32_to_cpu(HDR(bh)->h_refcount) - 1);
-+ if (HDR(bh)->h_refcount == cpu_to_le32(1)) {
-+ ext2_xattr_cache_remove(bh);
-+ ext2_xattr_free_block(inode, block);
-+ bforget(bh);
-+ bh = NULL;
-+ } else {
-+ HDR(bh)->h_refcount = cpu_to_le32(
-+ le32_to_cpu(HDR(bh)->h_refcount) - 1);
-+ mark_buffer_dirty(bh);
-+ if (IS_SYNC(inode)) {
-+ ll_rw_block(WRITE, 1, &bh);
-+ wait_on_buffer(bh);
-+ }
-+ ext2_xattr_quota_free(inode);
-+ }
-+ EXT2_I(inode)->i_file_acl = 0;
-+
-+cleanup:
-+ brelse(bh);
-+ up(&ext2_xattr_sem);
-+}
-+
-+/*
-+ * ext2_xattr_put_super()
-+ *
-+ * This is called when a file system is unmounted.
-+ */
-+void
-+ext2_xattr_put_super(struct super_block *sb)
-+{
-+#ifdef CONFIG_EXT2_FS_XATTR_SHARING
-+ mb_cache_shrink(ext2_xattr_cache, sb->s_dev);
-+#endif
-+}
-+
-+#ifdef CONFIG_EXT2_FS_XATTR_SHARING
-+
-+/*
-+ * ext2_xattr_cache_insert()
-+ *
-+ * Create a new entry in the extended attribute cache, and insert
-+ * it unless such an entry is already in the cache.
-+ *
-+ * Returns 0, or a negative error number on failure.
-+ */
-+static int
-+ext2_xattr_cache_insert(struct buffer_head *bh)
-+{
-+ __u32 hash = le32_to_cpu(HDR(bh)->h_hash);
-+ struct mb_cache_entry *ce;
-+ int error;
-+
-+ ce = mb_cache_entry_alloc(ext2_xattr_cache);
-+ if (!ce)
-+ return -ENOMEM;
-+ error = mb_cache_entry_insert(ce, bh->b_dev, bh->b_blocknr, &hash);
-+ if (error) {
-+ mb_cache_entry_free(ce);
-+ if (error == -EBUSY) {
-+ ea_bdebug(bh, "already in cache (%d cache entries)",
-+ atomic_read(&ext2_xattr_cache->c_entry_count));
-+ error = 0;
-+ }
-+ } else {
-+ ea_bdebug(bh, "inserting [%x] (%d cache entries)", (int)hash,
-+ atomic_read(&ext2_xattr_cache->c_entry_count));
-+ mb_cache_entry_release(ce);
-+ }
-+ return error;
-+}
-+
-+/*
-+ * ext2_xattr_cmp()
-+ *
-+ * Compare two extended attribute blocks for equality.
-+ *
-+ * Returns 0 if the blocks are equal, 1 if they differ, and
-+ * a negative error number on errors.
-+ */
-+static int
-+ext2_xattr_cmp(struct ext2_xattr_header *header1,
-+ struct ext2_xattr_header *header2)
-+{
-+ struct ext2_xattr_entry *entry1, *entry2;
-+
-+ entry1 = ENTRY(header1+1);
-+ entry2 = ENTRY(header2+1);
-+ while (!IS_LAST_ENTRY(entry1)) {
-+ if (IS_LAST_ENTRY(entry2))
-+ return 1;
-+ if (entry1->e_hash != entry2->e_hash ||
-+ entry1->e_name_len != entry2->e_name_len ||
-+ entry1->e_value_size != entry2->e_value_size ||
-+ memcmp(entry1->e_name, entry2->e_name, entry1->e_name_len))
-+ return 1;
-+ if (entry1->e_value_block != 0 || entry2->e_value_block != 0)
-+ return -EIO;
-+ if (memcmp((char *)header1 + le16_to_cpu(entry1->e_value_offs),
-+ (char *)header2 + le16_to_cpu(entry2->e_value_offs),
-+ le32_to_cpu(entry1->e_value_size)))
-+ return 1;
-+
-+ entry1 = EXT2_XATTR_NEXT(entry1);
-+ entry2 = EXT2_XATTR_NEXT(entry2);
-+ }
-+ if (!IS_LAST_ENTRY(entry2))
-+ return 1;
-+ return 0;
-+}
-+
-+/*
-+ * ext2_xattr_cache_find()
-+ *
-+ * Find an identical extended attribute block.
-+ *
-+ * Returns a pointer to the block found, or NULL if such a block was
-+ * not found or an error occurred.
-+ */
-+static struct buffer_head *
-+ext2_xattr_cache_find(struct inode *inode, struct ext2_xattr_header *header)
-+{
-+ __u32 hash = le32_to_cpu(header->h_hash);
-+ struct mb_cache_entry *ce;
-+
-+ if (!header->h_hash)
-+ return NULL; /* never share */
-+ ea_idebug(inode, "looking for cached blocks [%x]", (int)hash);
-+ ce = mb_cache_entry_find_first(ext2_xattr_cache, 0, inode->i_dev, hash);
-+ while (ce) {
-+ struct buffer_head *bh = sb_bread(inode->i_sb, ce->e_block);
-+
-+ if (!bh) {
-+ ext2_error(inode->i_sb, "ext2_xattr_cache_find",
-+ "inode %ld: block %ld read error",
-+ inode->i_ino, ce->e_block);
-+ } else if (le32_to_cpu(HDR(bh)->h_refcount) >
-+ EXT2_XATTR_REFCOUNT_MAX) {
-+ ea_idebug(inode, "block %ld refcount %d>%d",ce->e_block,
-+ le32_to_cpu(HDR(bh)->h_refcount),
-+ EXT2_XATTR_REFCOUNT_MAX);
-+ } else if (!ext2_xattr_cmp(header, HDR(bh))) {
-+ ea_bdebug(bh, "b_count=%d",atomic_read(&(bh->b_count)));
-+ mb_cache_entry_release(ce);
-+ return bh;
-+ }
-+ brelse(bh);
-+ ce = mb_cache_entry_find_next(ce, 0, inode->i_dev, hash);
-+ }
-+ return NULL;
-+}
-+
-+/*
-+ * ext2_xattr_cache_remove()
-+ *
-+ * Remove the cache entry of a block from the cache. Called when a
-+ * block becomes invalid.
-+ */
-+static void
-+ext2_xattr_cache_remove(struct buffer_head *bh)
-+{
-+ struct mb_cache_entry *ce;
-+
-+ ce = mb_cache_entry_get(ext2_xattr_cache, bh->b_dev, bh->b_blocknr);
-+ if (ce) {
-+ ea_bdebug(bh, "removing (%d cache entries remaining)",
-+ atomic_read(&ext2_xattr_cache->c_entry_count)-1);
-+ mb_cache_entry_free(ce);
-+ } else
-+ ea_bdebug(bh, "no cache entry");
-+}
-+
-+#define NAME_HASH_SHIFT 5
-+#define VALUE_HASH_SHIFT 16
-+
-+/*
-+ * ext2_xattr_hash_entry()
-+ *
-+ * Compute the hash of an extended attribute.
-+ */
-+static inline void ext2_xattr_hash_entry(struct ext2_xattr_header *header,
-+ struct ext2_xattr_entry *entry)
-+{
-+ __u32 hash = 0;
-+ char *name = entry->e_name;
-+ int n;
-+
-+ for (n=0; n < entry->e_name_len; n++) {
-+ hash = (hash << NAME_HASH_SHIFT) ^
-+ (hash >> (8*sizeof(hash) - NAME_HASH_SHIFT)) ^
-+ *name++;
-+ }
-+
-+ if (entry->e_value_block == 0 && entry->e_value_size != 0) {
-+ __u32 *value = (__u32 *)((char *)header +
-+ le16_to_cpu(entry->e_value_offs));
-+ for (n = (le32_to_cpu(entry->e_value_size) +
-+ EXT2_XATTR_ROUND) >> EXT2_XATTR_PAD_BITS; n; n--) {
-+ hash = (hash << VALUE_HASH_SHIFT) ^
-+ (hash >> (8*sizeof(hash) - VALUE_HASH_SHIFT)) ^
-+ le32_to_cpu(*value++);
-+ }
-+ }
-+ entry->e_hash = cpu_to_le32(hash);
-+}
-+
-+#undef NAME_HASH_SHIFT
-+#undef VALUE_HASH_SHIFT
-+
-+#define BLOCK_HASH_SHIFT 16
-+
-+/*
-+ * ext2_xattr_rehash()
-+ *
-+ * Re-compute the extended attribute hash value after an entry has changed.
-+ */
-+static void ext2_xattr_rehash(struct ext2_xattr_header *header,
-+ struct ext2_xattr_entry *entry)
-+{
-+ struct ext2_xattr_entry *here;
-+ __u32 hash = 0;
-+
-+ ext2_xattr_hash_entry(header, entry);
-+ here = ENTRY(header+1);
-+ while (!IS_LAST_ENTRY(here)) {
-+ if (!here->e_hash) {
-+ /* Block is not shared if an entry's hash value == 0 */
-+ hash = 0;
-+ break;
-+ }
-+ hash = (hash << BLOCK_HASH_SHIFT) ^
-+ (hash >> (8*sizeof(hash) - BLOCK_HASH_SHIFT)) ^
-+ le32_to_cpu(here->e_hash);
-+ here = EXT2_XATTR_NEXT(here);
-+ }
-+ header->h_hash = cpu_to_le32(hash);
-+}
-+
-+#undef BLOCK_HASH_SHIFT
-+
-+int __init
-+init_ext2_xattr(void)
-+{
-+ ext2_xattr_cache = mb_cache_create("ext2_xattr", NULL,
-+ sizeof(struct mb_cache_entry) +
-+ sizeof(struct mb_cache_entry_index), 1, 61);
-+ if (!ext2_xattr_cache)
-+ return -ENOMEM;
-+
-+ return 0;
-+}
-+
-+void
-+exit_ext2_xattr(void)
-+{
-+ mb_cache_destroy(ext2_xattr_cache);
-+}
-+
-+#else /* CONFIG_EXT2_FS_XATTR_SHARING */
-+
-+int __init
-+init_ext2_xattr(void)
-+{
-+ return 0;
-+}
-+
-+void
-+exit_ext2_xattr(void)
-+{
-+}
-+
-+#endif /* CONFIG_EXT2_FS_XATTR_SHARING */
---- /dev/null 2003-01-30 18:24:37.000000000 +0800
-+++ linux-2.4.20-root/fs/ext2/xattr_user.c 2003-05-07 18:08:03.000000000 +0800
-@@ -0,0 +1,103 @@
-+/*
-+ * linux/fs/ext2/xattr_user.c
-+ * Handler for extended user attributes.
-+ *
-+ * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/string.h>
-+#include <linux/fs.h>
-+#include <linux/ext2_fs.h>
-+#include <linux/ext2_xattr.h>
-+
-+#ifdef CONFIG_EXT2_FS_POSIX_ACL
-+# include <linux/ext2_acl.h>
-+#endif
-+
-+#define XATTR_USER_PREFIX "user."
-+
-+static size_t
-+ext2_xattr_user_list(char *list, struct inode *inode,
-+ const char *name, int name_len)
-+{
-+ const int prefix_len = sizeof(XATTR_USER_PREFIX)-1;
-+
-+ if (!test_opt(inode->i_sb, XATTR_USER))
-+ return 0;
-+
-+ if (list) {
-+ memcpy(list, XATTR_USER_PREFIX, prefix_len);
-+ memcpy(list+prefix_len, name, name_len);
-+ list[prefix_len + name_len] = '\0';
-+ }
-+ return prefix_len + name_len + 1;
-+}
-+
-+static int
-+ext2_xattr_user_get(struct inode *inode, const char *name,
-+ void *buffer, size_t size)
-+{
-+ int error;
-+
-+ if (strcmp(name, "") == 0)
-+ return -EINVAL;
-+ if (!test_opt(inode->i_sb, XATTR_USER))
-+ return -ENOTSUP;
-+#ifdef CONFIG_EXT2_FS_POSIX_ACL
-+ error = ext2_permission_locked(inode, MAY_READ);
-+#else
-+ error = permission(inode, MAY_READ);
-+#endif
-+ if (error)
-+ return error;
-+
-+ return ext2_xattr_get(inode, EXT2_XATTR_INDEX_USER, name,
-+ buffer, size);
-+}
-+
-+static int
-+ext2_xattr_user_set(struct inode *inode, const char *name,
-+ const void *value, size_t size, int flags)
-+{
-+ int error;
-+
-+ if (strcmp(name, "") == 0)
-+ return -EINVAL;
-+ if (!test_opt(inode->i_sb, XATTR_USER))
-+ return -ENOTSUP;
-+ if ( !S_ISREG(inode->i_mode) &&
-+ (!S_ISDIR(inode->i_mode) || inode->i_mode & S_ISVTX))
-+ return -EPERM;
-+#ifdef CONFIG_EXT2_FS_POSIX_ACL
-+ error = ext2_permission_locked(inode, MAY_WRITE);
-+#else
-+ error = permission(inode, MAY_WRITE);
-+#endif
-+ if (error)
-+ return error;
-+
-+ return ext2_xattr_set(inode, EXT2_XATTR_INDEX_USER, name,
-+ value, size, flags);
-+}
-+
-+struct ext2_xattr_handler ext2_xattr_user_handler = {
-+ prefix: XATTR_USER_PREFIX,
-+ list: ext2_xattr_user_list,
-+ get: ext2_xattr_user_get,
-+ set: ext2_xattr_user_set,
-+};
-+
-+int __init
-+init_ext2_xattr_user(void)
-+{
-+ return ext2_xattr_register(EXT2_XATTR_INDEX_USER,
-+ &ext2_xattr_user_handler);
-+}
-+
-+void
-+exit_ext2_xattr_user(void)
-+{
-+ ext2_xattr_unregister(EXT2_XATTR_INDEX_USER,
-+ &ext2_xattr_user_handler);
-+}
---- linux-2.4.20/fs/ext3/Makefile~linux-2.4.20-xattr-0.8.54 2003-05-05 19:01:02.000000000 +0800
-+++ linux-2.4.20-root/fs/ext3/Makefile 2003-05-07 18:10:33.000000000 +0800
-@@ -1,5 +1,5 @@
- #
--# Makefile for the linux ext2-filesystem routines.
-+# Makefile for the linux ext3-filesystem routines.
- #
- # Note! Dependencies are done automagically by 'make dep', which also
- # removes any old dependencies. DON'T put your own dependencies here
-@@ -9,10 +9,14 @@
-
- O_TARGET := ext3.o
-
--export-objs := super.o inode.o
-+export-objs := ext3-exports.o
-
- obj-y := balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o \
-- ioctl.o namei.o super.o symlink.o hash.o
-+ ioctl.o namei.o super.o symlink.o hash.o ext3-exports.o
- obj-m := $(O_TARGET)
-
-+export-objs += xattr.o
-+obj-$(CONFIG_EXT3_FS_XATTR) += xattr.o
-+obj-$(CONFIG_EXT3_FS_XATTR_USER) += xattr_user.o
-+
- include $(TOPDIR)/Rules.make
---- linux-2.4.20/fs/ext3/file.c~linux-2.4.20-xattr-0.8.54 2003-05-05 19:01:02.000000000 +0800
-+++ linux-2.4.20-root/fs/ext3/file.c 2003-05-07 18:08:03.000000000 +0800
-@@ -23,6 +23,7 @@
- #include <linux/locks.h>
- #include <linux/jbd.h>
- #include <linux/ext3_fs.h>
-+#include <linux/ext3_xattr.h>
- #include <linux/ext3_jbd.h>
- #include <linux/smp_lock.h>
-
-@@ -126,5 +127,9 @@ struct file_operations ext3_file_operati
- struct inode_operations ext3_file_inode_operations = {
- truncate: ext3_truncate, /* BKL held */
- setattr: ext3_setattr, /* BKL held */
-+ setxattr: ext3_setxattr, /* BKL held */
-+ getxattr: ext3_getxattr, /* BKL held */
-+ listxattr: ext3_listxattr, /* BKL held */
-+ removexattr: ext3_removexattr, /* BKL held */
- };
-
---- linux-2.4.20/fs/ext3/ialloc.c~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:15.000000000 +0800
-+++ linux-2.4.20-root/fs/ext3/ialloc.c 2003-05-07 18:08:03.000000000 +0800
-@@ -17,6 +17,7 @@
- #include <linux/jbd.h>
- #include <linux/ext3_fs.h>
- #include <linux/ext3_jbd.h>
-+#include <linux/ext3_xattr.h>
- #include <linux/stat.h>
- #include <linux/string.h>
- #include <linux/locks.h>
-@@ -216,6 +217,7 @@ void ext3_free_inode (handle_t *handle,
- * as writing the quota to disk may need the lock as well.
- */
- DQUOT_INIT(inode);
-+ ext3_xattr_delete_inode(handle, inode);
- DQUOT_FREE_INODE(inode);
- DQUOT_DROP(inode);
-
---- linux-2.4.20/fs/ext3/inode.c~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:15.000000000 +0800
-+++ linux-2.4.20-root/fs/ext3/inode.c 2003-05-07 18:08:03.000000000 +0800
-@@ -39,6 +39,18 @@
- */
- #undef SEARCH_FROM_ZERO
-
-+/*
-+ * Test whether an inode is a fast symlink.
-+ */
-+static inline int ext3_inode_is_fast_symlink(struct inode *inode)
-+{
-+ int ea_blocks = inode->u.ext3_i.i_file_acl ?
-+ (inode->i_sb->s_blocksize >> 9) : 0;
-+
-+ return (S_ISLNK(inode->i_mode) &&
-+ inode->i_blocks - ea_blocks == 0);
-+}
-+
- /* The ext3 forget function must perform a revoke if we are freeing data
- * which has been journaled. Metadata (eg. indirect blocks) must be
- * revoked in all cases.
-@@ -48,7 +60,7 @@
- * still needs to be revoked.
- */
-
--static int ext3_forget(handle_t *handle, int is_metadata,
-+int ext3_forget(handle_t *handle, int is_metadata,
- struct inode *inode, struct buffer_head *bh,
- int blocknr)
- {
-@@ -164,9 +176,7 @@ void ext3_delete_inode (struct inode * i
- {
- handle_t *handle;
-
-- if (is_bad_inode(inode) ||
-- inode->i_ino == EXT3_ACL_IDX_INO ||
-- inode->i_ino == EXT3_ACL_DATA_INO)
-+ if (is_bad_inode(inode))
- goto no_delete;
-
- lock_kernel();
-@@ -1855,6 +1865,8 @@ void ext3_truncate(struct inode * inode)
- if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
- S_ISLNK(inode->i_mode)))
- return;
-+ if (ext3_inode_is_fast_symlink(inode))
-+ return;
- if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
- return;
-
-@@ -2002,8 +2014,6 @@ int ext3_get_inode_loc (struct inode *in
- struct ext3_group_desc * gdp;
-
- if ((inode->i_ino != EXT3_ROOT_INO &&
-- inode->i_ino != EXT3_ACL_IDX_INO &&
-- inode->i_ino != EXT3_ACL_DATA_INO &&
- inode->i_ino != EXT3_JOURNAL_INO &&
- inode->i_ino < EXT3_FIRST_INO(inode->i_sb)) ||
- inode->i_ino > le32_to_cpu(
-@@ -2130,10 +2140,7 @@ void ext3_read_inode(struct inode * inod
-
- brelse (iloc.bh);
-
-- if (inode->i_ino == EXT3_ACL_IDX_INO ||
-- inode->i_ino == EXT3_ACL_DATA_INO)
-- /* Nothing to do */ ;
-- else if (S_ISREG(inode->i_mode)) {
-+ if (S_ISREG(inode->i_mode)) {
- inode->i_op = &ext3_file_inode_operations;
- inode->i_fop = &ext3_file_operations;
- inode->i_mapping->a_ops = &ext3_aops;
-@@ -2141,15 +2148,17 @@ void ext3_read_inode(struct inode * inod
- inode->i_op = &ext3_dir_inode_operations;
- inode->i_fop = &ext3_dir_operations;
- } else if (S_ISLNK(inode->i_mode)) {
-- if (!inode->i_blocks)
-+ if (ext3_inode_is_fast_symlink(inode))
- inode->i_op = &ext3_fast_symlink_inode_operations;
- else {
-- inode->i_op = &page_symlink_inode_operations;
-+ inode->i_op = &ext3_symlink_inode_operations;
- inode->i_mapping->a_ops = &ext3_aops;
- }
-- } else
-+ } else {
-+ inode->i_op = &ext3_special_inode_operations;
- init_special_inode(inode, inode->i_mode,
- le32_to_cpu(iloc.raw_inode->i_block[0]));
-+ }
- ext3_set_inode_flags(inode);
- return;
-
---- linux-2.4.20/fs/ext3/namei.c~linux-2.4.20-xattr-0.8.54 2003-05-05 19:01:05.000000000 +0800
-+++ linux-2.4.20-root/fs/ext3/namei.c 2003-05-07 18:08:03.000000000 +0800
-@@ -29,6 +29,7 @@
- #include <linux/sched.h>
- #include <linux/ext3_fs.h>
- #include <linux/ext3_jbd.h>
-+#include <linux/ext3_xattr.h>
- #include <linux/fcntl.h>
- #include <linux/stat.h>
- #include <linux/string.h>
-@@ -1611,7 +1612,7 @@ static int ext3_mkdir(struct inode * dir
- if (IS_SYNC(dir))
- handle->h_sync = 1;
-
-- inode = ext3_new_inode (handle, dir, S_IFDIR);
-+ inode = ext3_new_inode (handle, dir, S_IFDIR | mode);
- err = PTR_ERR(inode);
- if (IS_ERR(inode))
- goto out_stop;
-@@ -1619,7 +1620,6 @@ static int ext3_mkdir(struct inode * dir
- inode->i_op = &ext3_dir_inode_operations;
- inode->i_fop = &ext3_dir_operations;
- inode->i_size = EXT3_I(inode)->i_disksize = inode->i_sb->s_blocksize;
-- inode->i_blocks = 0;
- dir_block = ext3_bread (handle, inode, 0, 1, &err);
- if (!dir_block) {
- inode->i_nlink--; /* is this nlink == 0? */
-@@ -1646,9 +1646,6 @@ static int ext3_mkdir(struct inode * dir
- BUFFER_TRACE(dir_block, "call ext3_journal_dirty_metadata");
- ext3_journal_dirty_metadata(handle, dir_block);
- brelse (dir_block);
-- inode->i_mode = S_IFDIR | mode;
-- if (dir->i_mode & S_ISGID)
-- inode->i_mode |= S_ISGID;
- ext3_mark_inode_dirty(handle, inode);
- err = ext3_add_entry (handle, dentry, inode);
- if (err) {
-@@ -2017,7 +2014,7 @@ static int ext3_symlink (struct inode *
- goto out_stop;
-
- if (l > sizeof (EXT3_I(inode)->i_data)) {
-- inode->i_op = &page_symlink_inode_operations;
-+ inode->i_op = &ext3_symlink_inode_operations;
- inode->i_mapping->a_ops = &ext3_aops;
- /*
- * block_symlink() calls back into ext3_prepare/commit_write.
-@@ -2244,4 +2241,16 @@ struct inode_operations ext3_dir_inode_o
- rmdir: ext3_rmdir, /* BKL held */
- mknod: ext3_mknod, /* BKL held */
- rename: ext3_rename, /* BKL held */
-+ setxattr: ext3_setxattr, /* BKL held */
-+ getxattr: ext3_getxattr, /* BKL held */
-+ listxattr: ext3_listxattr, /* BKL held */
-+ removexattr: ext3_removexattr, /* BKL held */
- };
-+
-+struct inode_operations ext3_special_inode_operations = {
-+ setxattr: ext3_setxattr, /* BKL held */
-+ getxattr: ext3_getxattr, /* BKL held */
-+ listxattr: ext3_listxattr, /* BKL held */
-+ removexattr: ext3_removexattr, /* BKL held */
-+};
-+
---- linux-2.4.20/fs/ext3/super.c~linux-2.4.20-xattr-0.8.54 2003-05-05 19:01:02.000000000 +0800
-+++ linux-2.4.20-root/fs/ext3/super.c 2003-05-07 18:08:39.000000000 +0800
-@@ -24,6 +24,7 @@
- #include <linux/jbd.h>
- #include <linux/ext3_fs.h>
- #include <linux/ext3_jbd.h>
-+#include <linux/ext3_xattr.h>
- #include <linux/slab.h>
- #include <linux/init.h>
- #include <linux/locks.h>
-@@ -404,6 +405,7 @@ void ext3_put_super (struct super_block
- kdev_t j_dev = sbi->s_journal->j_dev;
- int i;
-
-+ ext3_xattr_put_super(sb);
- journal_destroy(sbi->s_journal);
- if (!(sb->s_flags & MS_RDONLY)) {
- EXT3_CLEAR_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER);
-@@ -499,6 +501,7 @@ static int parse_options (char * options
- int is_remount)
- {
- unsigned long *mount_options = &sbi->s_mount_opt;
-+
- uid_t *resuid = &sbi->s_resuid;
- gid_t *resgid = &sbi->s_resgid;
- char * this_char;
-@@ -511,6 +514,13 @@ static int parse_options (char * options
- this_char = strtok (NULL, ",")) {
- if ((value = strchr (this_char, '=')) != NULL)
- *value++ = 0;
-+#ifdef CONFIG_EXT3_FS_XATTR_USER
-+ if (!strcmp (this_char, "user_xattr"))
-+ set_opt (*mount_options, XATTR_USER);
-+ else if (!strcmp (this_char, "nouser_xattr"))
-+ clear_opt (*mount_options, XATTR_USER);
-+ else
-+#endif
- if (!strcmp (this_char, "bsddf"))
- clear_opt (*mount_options, MINIX_DF);
- else if (!strcmp (this_char, "nouid32")) {
-@@ -928,6 +938,12 @@ struct super_block * ext3_read_super (st
- sbi->s_mount_opt = 0;
- sbi->s_resuid = EXT3_DEF_RESUID;
- sbi->s_resgid = EXT3_DEF_RESGID;
-+
-+ /* Default extended attribute flags */
-+#ifdef CONFIG_EXT3_FS_XATTR_USER
-+ /* set_opt(sbi->s_mount_opt, XATTR_USER); */
-+#endif
-+
- if (!parse_options ((char *) data, &sb_block, sbi, &journal_inum, 0)) {
- sb->s_dev = 0;
- goto out_fail;
-@@ -1767,17 +1783,29 @@ static DECLARE_FSTYPE_DEV(ext3_fs_type,
-
- static int __init init_ext3_fs(void)
- {
-- return register_filesystem(&ext3_fs_type);
-+ int error = init_ext3_xattr();
-+ if (error)
-+ return error;
-+ error = init_ext3_xattr_user();
-+ if (error)
-+ goto fail;
-+ error = register_filesystem(&ext3_fs_type);
-+ if (!error)
-+ return 0;
-+
-+ exit_ext3_xattr_user();
-+fail:
-+ exit_ext3_xattr();
-+ return error;
- }
-
- static void __exit exit_ext3_fs(void)
- {
- unregister_filesystem(&ext3_fs_type);
-+ exit_ext3_xattr_user();
-+ exit_ext3_xattr();
- }
-
--EXPORT_SYMBOL(ext3_force_commit);
--EXPORT_SYMBOL(ext3_bread);
--
- MODULE_AUTHOR("Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others");
- MODULE_DESCRIPTION("Second Extended Filesystem with journaling extensions");
- MODULE_LICENSE("GPL");
---- linux-2.4.20/fs/ext3/symlink.c~linux-2.4.20-xattr-0.8.54 2001-11-10 06:25:04.000000000 +0800
-+++ linux-2.4.20-root/fs/ext3/symlink.c 2003-05-07 18:08:03.000000000 +0800
-@@ -20,6 +20,7 @@
- #include <linux/fs.h>
- #include <linux/jbd.h>
- #include <linux/ext3_fs.h>
-+#include <linux/ext3_xattr.h>
-
- static int ext3_readlink(struct dentry *dentry, char *buffer, int buflen)
- {
-@@ -33,7 +34,20 @@ static int ext3_follow_link(struct dentr
- return vfs_follow_link(nd, s);
- }
-
-+struct inode_operations ext3_symlink_inode_operations = {
-+ readlink: page_readlink, /* BKL not held. Don't need */
-+ follow_link: page_follow_link, /* BKL not held. Don't need */
-+ setxattr: ext3_setxattr, /* BKL held */
-+ getxattr: ext3_getxattr, /* BKL held */
-+ listxattr: ext3_listxattr, /* BKL held */
-+ removexattr: ext3_removexattr, /* BKL held */
-+};
-+
- struct inode_operations ext3_fast_symlink_inode_operations = {
- readlink: ext3_readlink, /* BKL not held. Don't need */
- follow_link: ext3_follow_link, /* BKL not held. Don't need */
-+ setxattr: ext3_setxattr, /* BKL held */
-+ getxattr: ext3_getxattr, /* BKL held */
-+ listxattr: ext3_listxattr, /* BKL held */
-+ removexattr: ext3_removexattr, /* BKL held */
- };
---- /dev/null 2003-01-30 18:24:37.000000000 +0800
-+++ linux-2.4.20-root/fs/ext3/xattr.c 2003-05-07 18:09:23.000000000 +0800
-@@ -0,0 +1,1225 @@
-+/*
-+ * linux/fs/ext3/xattr.c
-+ *
-+ * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
-+ *
-+ * Fix by Harrison Xing <harrison@mountainviewdata.com>.
-+ * Ext3 code with a lot of help from Eric Jarman <ejarman@acm.org>.
-+ * Extended attributes for symlinks and special files added per
-+ * suggestion of Luka Renko <luka.renko@hermes.si>.
-+ */
-+
-+/*
-+ * Extended attributes are stored on disk blocks allocated outside of
-+ * any inode. The i_file_acl field is then made to point to this allocated
-+ * block. If all extended attributes of an inode are identical, these
-+ * inodes may share the same extended attribute block. Such situations
-+ * are automatically detected by keeping a cache of recent attribute block
-+ * numbers and hashes over the block's contents in memory.
-+ *
-+ *
-+ * Extended attribute block layout:
-+ *
-+ * +------------------+
-+ * | header |
-+ * | entry 1 | |
-+ * | entry 2 | | growing downwards
-+ * | entry 3 | v
-+ * | four null bytes |
-+ * | . . . |
-+ * | value 1 | ^
-+ * | value 3 | | growing upwards
-+ * | value 2 | |
-+ * +------------------+
-+ *
-+ * The block header is followed by multiple entry descriptors. These entry
-+ * descriptors are variable in size, and alligned to EXT3_XATTR_PAD
-+ * byte boundaries. The entry descriptors are sorted by attribute name,
-+ * so that two extended attribute blocks can be compared efficiently.
-+ *
-+ * Attribute values are aligned to the end of the block, stored in
-+ * no specific order. They are also padded to EXT3_XATTR_PAD byte
-+ * boundaries. No additional gaps are left between them.
-+ *
-+ * Locking strategy
-+ * ----------------
-+ * The VFS already holds the BKL and the inode->i_sem semaphore when any of
-+ * the xattr inode operations are called, so we are guaranteed that only one
-+ * processes accesses extended attributes of an inode at any time.
-+ *
-+ * For writing we also grab the ext3_xattr_sem semaphore. This ensures that
-+ * only a single process is modifying an extended attribute block, even
-+ * if the block is shared among inodes.
-+ *
-+ * Note for porting to 2.5
-+ * -----------------------
-+ * The BKL will no longer be held in the xattr inode operations.
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/fs.h>
-+#include <linux/locks.h>
-+#include <linux/slab.h>
-+#include <linux/ext3_jbd.h>
-+#include <linux/ext3_fs.h>
-+#include <linux/ext3_xattr.h>
-+#include <linux/mbcache.h>
-+#include <linux/quotaops.h>
-+#include <asm/semaphore.h>
-+#include <linux/compatmac.h>
-+
-+#define EXT3_EA_USER "user."
-+
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
-+# define mark_buffer_dirty(bh) mark_buffer_dirty(bh, 1)
-+#endif
-+
-+#define HDR(bh) ((struct ext3_xattr_header *)((bh)->b_data))
-+#define ENTRY(ptr) ((struct ext3_xattr_entry *)(ptr))
-+#define FIRST_ENTRY(bh) ENTRY(HDR(bh)+1)
-+#define IS_LAST_ENTRY(entry) (*(__u32 *)(entry) == 0)
-+
-+#ifdef EXT3_XATTR_DEBUG
-+# define ea_idebug(inode, f...) do { \
-+ printk(KERN_DEBUG "inode %s:%ld: ", \
-+ kdevname(inode->i_dev), inode->i_ino); \
-+ printk(f); \
-+ printk("\n"); \
-+ } while (0)
-+# define ea_bdebug(bh, f...) do { \
-+ printk(KERN_DEBUG "block %s:%ld: ", \
-+ kdevname(bh->b_dev), bh->b_blocknr); \
-+ printk(f); \
-+ printk("\n"); \
-+ } while (0)
-+#else
-+# define ea_idebug(f...)
-+# define ea_bdebug(f...)
-+#endif
-+
-+static int ext3_xattr_set2(handle_t *, struct inode *, struct buffer_head *,
-+ struct ext3_xattr_header *);
-+
-+#ifdef CONFIG_EXT3_FS_XATTR_SHARING
-+
-+static int ext3_xattr_cache_insert(struct buffer_head *);
-+static struct buffer_head *ext3_xattr_cache_find(struct inode *,
-+ struct ext3_xattr_header *);
-+static void ext3_xattr_cache_remove(struct buffer_head *);
-+static void ext3_xattr_rehash(struct ext3_xattr_header *,
-+ struct ext3_xattr_entry *);
-+
-+static struct mb_cache *ext3_xattr_cache;
-+
-+#else
-+# define ext3_xattr_cache_insert(bh) 0
-+# define ext3_xattr_cache_find(inode, header) NULL
-+# define ext3_xattr_cache_remove(bh) while(0) {}
-+# define ext3_xattr_rehash(header, entry) while(0) {}
-+#endif
-+
-+/*
-+ * If a file system does not share extended attributes among inodes,
-+ * we should not need the ext3_xattr_sem semaphore. However, the
-+ * filesystem may still contain shared blocks, so we always take
-+ * the lock.
-+ */
-+
-+DECLARE_MUTEX(ext3_xattr_sem);
-+
-+static inline int
-+ext3_xattr_new_block(handle_t *handle, struct inode *inode,
-+ int * errp, int force)
-+{
-+ struct super_block *sb = inode->i_sb;
-+ int goal = le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block) +
-+ EXT3_I(inode)->i_block_group * EXT3_BLOCKS_PER_GROUP(sb);
-+
-+ /* How can we enforce the allocation? */
-+ int block = ext3_new_block(handle, inode, goal, 0, 0, errp);
-+#ifdef OLD_QUOTAS
-+ if (!*errp)
-+ inode->i_blocks += inode->i_sb->s_blocksize >> 9;
-+#endif
-+ return block;
-+}
-+
-+static inline int
-+ext3_xattr_quota_alloc(struct inode *inode, int force)
-+{
-+ /* How can we enforce the allocation? */
-+#ifdef OLD_QUOTAS
-+ int error = DQUOT_ALLOC_BLOCK(inode->i_sb, inode, 1);
-+ if (!error)
-+ inode->i_blocks += inode->i_sb->s_blocksize >> 9;
-+#else
-+ int error = DQUOT_ALLOC_BLOCK(inode, 1);
-+#endif
-+ return error;
-+}
-+
-+#ifdef OLD_QUOTAS
-+
-+static inline void
-+ext3_xattr_quota_free(struct inode *inode)
-+{
-+ DQUOT_FREE_BLOCK(inode->i_sb, inode, 1);
-+ inode->i_blocks -= inode->i_sb->s_blocksize >> 9;
-+}
-+
-+static inline void
-+ext3_xattr_free_block(handle_t *handle, struct inode * inode,
-+ unsigned long block)
-+{
-+ ext3_free_blocks(handle, inode, block, 1);
-+ inode->i_blocks -= inode->i_sb->s_blocksize >> 9;
-+}
-+
-+#else
-+# define ext3_xattr_quota_free(inode) \
-+ DQUOT_FREE_BLOCK(inode, 1)
-+# define ext3_xattr_free_block(handle, inode, block) \
-+ ext3_free_blocks(handle, inode, block, 1)
-+#endif
-+
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,18)
-+
-+static inline struct buffer_head *
-+sb_bread(struct super_block *sb, int block)
-+{
-+ return bread(sb->s_dev, block, sb->s_blocksize);
-+}
-+
-+static inline struct buffer_head *
-+sb_getblk(struct super_block *sb, int block)
-+{
-+ return getblk(sb->s_dev, block, sb->s_blocksize);
-+}
-+
-+#endif
-+
-+struct ext3_xattr_handler *ext3_xattr_handlers[EXT3_XATTR_INDEX_MAX];
-+rwlock_t ext3_handler_lock = RW_LOCK_UNLOCKED;
-+
-+int
-+ext3_xattr_register(int name_index, struct ext3_xattr_handler *handler)
-+{
-+ int error = -EINVAL;
-+
-+ if (name_index > 0 && name_index <= EXT3_XATTR_INDEX_MAX) {
-+ write_lock(&ext3_handler_lock);
-+ if (!ext3_xattr_handlers[name_index-1]) {
-+ ext3_xattr_handlers[name_index-1] = handler;
-+ error = 0;
-+ }
-+ write_unlock(&ext3_handler_lock);
-+ }
-+ return error;
-+}
-+
-+void
-+ext3_xattr_unregister(int name_index, struct ext3_xattr_handler *handler)
-+{
-+ if (name_index > 0 || name_index <= EXT3_XATTR_INDEX_MAX) {
-+ write_lock(&ext3_handler_lock);
-+ ext3_xattr_handlers[name_index-1] = NULL;
-+ write_unlock(&ext3_handler_lock);
-+ }
-+}
-+
-+static inline const char *
-+strcmp_prefix(const char *a, const char *a_prefix)
-+{
-+ while (*a_prefix && *a == *a_prefix) {
-+ a++;
-+ a_prefix++;
-+ }
-+ return *a_prefix ? NULL : a;
-+}
-+
-+/*
-+ * Decode the extended attribute name, and translate it into
-+ * the name_index and name suffix.
-+ */
-+static inline struct ext3_xattr_handler *
-+ext3_xattr_resolve_name(const char **name)
-+{
-+ struct ext3_xattr_handler *handler = NULL;
-+ int i;
-+
-+ if (!*name)
-+ return NULL;
-+ read_lock(&ext3_handler_lock);
-+ for (i=0; i<EXT3_XATTR_INDEX_MAX; i++) {
-+ if (ext3_xattr_handlers[i]) {
-+ const char *n = strcmp_prefix(*name,
-+ ext3_xattr_handlers[i]->prefix);
-+ if (n) {
-+ handler = ext3_xattr_handlers[i];
-+ *name = n;
-+ break;
-+ }
-+ }
-+ }
-+ read_unlock(&ext3_handler_lock);
-+ return handler;
-+}
-+
-+static inline struct ext3_xattr_handler *
-+ext3_xattr_handler(int name_index)
-+{
-+ struct ext3_xattr_handler *handler = NULL;
-+ if (name_index > 0 && name_index <= EXT3_XATTR_INDEX_MAX) {
-+ read_lock(&ext3_handler_lock);
-+ handler = ext3_xattr_handlers[name_index-1];
-+ read_unlock(&ext3_handler_lock);
-+ }
-+ return handler;
-+}
-+
-+/*
-+ * Inode operation getxattr()
-+ *
-+ * dentry->d_inode->i_sem down
-+ * BKL held [before 2.5.x]
-+ */
-+ssize_t
-+ext3_getxattr(struct dentry *dentry, const char *name,
-+ void *buffer, size_t size)
-+{
-+ struct ext3_xattr_handler *handler;
-+ struct inode *inode = dentry->d_inode;
-+
-+ handler = ext3_xattr_resolve_name(&name);
-+ if (!handler)
-+ return -ENOTSUP;
-+ return handler->get(inode, name, buffer, size);
-+}
-+
-+/*
-+ * Inode operation listxattr()
-+ *
-+ * dentry->d_inode->i_sem down
-+ * BKL held [before 2.5.x]
-+ */
-+ssize_t
-+ext3_listxattr(struct dentry *dentry, char *buffer, size_t size)
-+{
-+ return ext3_xattr_list(dentry->d_inode, buffer, size);
-+}
-+
-+/*
-+ * Inode operation setxattr()
-+ *
-+ * dentry->d_inode->i_sem down
-+ * BKL held [before 2.5.x]
-+ */
-+int
-+ext3_setxattr(struct dentry *dentry, const char *name,
-+ const void *value, size_t size, int flags)
-+{
-+ struct ext3_xattr_handler *handler;
-+ struct inode *inode = dentry->d_inode;
-+
-+ if (size == 0)
-+ value = ""; /* empty EA, do not remove */
-+ handler = ext3_xattr_resolve_name(&name);
-+ if (!handler)
-+ return -ENOTSUP;
-+ return handler->set(inode, name, value, size, flags);
-+}
-+
-+/*
-+ * Inode operation removexattr()
-+ *
-+ * dentry->d_inode->i_sem down
-+ * BKL held [before 2.5.x]
-+ */
-+int
-+ext3_removexattr(struct dentry *dentry, const char *name)
-+{
-+ struct ext3_xattr_handler *handler;
-+ struct inode *inode = dentry->d_inode;
-+
-+ handler = ext3_xattr_resolve_name(&name);
-+ if (!handler)
-+ return -ENOTSUP;
-+ return handler->set(inode, name, NULL, 0, XATTR_REPLACE);
-+}
-+
-+/*
-+ * ext3_xattr_get()
-+ *
-+ * Copy an extended attribute into the buffer
-+ * provided, or compute the buffer size required.
-+ * Buffer is NULL to compute the size of the buffer required.
-+ *
-+ * Returns a negative error number on failure, or the number of bytes
-+ * used / required on success.
-+ */
-+int
-+ext3_xattr_get(struct inode *inode, int name_index, const char *name,
-+ void *buffer, size_t buffer_size)
-+{
-+ struct buffer_head *bh = NULL;
-+ struct ext3_xattr_entry *entry;
-+ unsigned int block, size;
-+ char *end;
-+ int name_len, error;
-+
-+ ea_idebug(inode, "name=%d.%s, buffer=%p, buffer_size=%ld",
-+ name_index, name, buffer, (long)buffer_size);
-+
-+ if (name == NULL)
-+ return -EINVAL;
-+ if (!EXT3_I(inode)->i_file_acl)
-+ return -ENOATTR;
-+ block = EXT3_I(inode)->i_file_acl;
-+ ea_idebug(inode, "reading block %d", block);
-+ bh = sb_bread(inode->i_sb, block);
-+ if (!bh)
-+ return -EIO;
-+ ea_bdebug(bh, "b_count=%d, refcount=%d",
-+ atomic_read(&(bh->b_count)), le32_to_cpu(HDR(bh)->h_refcount));
-+ end = bh->b_data + bh->b_size;
-+ if (HDR(bh)->h_magic != cpu_to_le32(EXT3_XATTR_MAGIC) ||
-+ HDR(bh)->h_blocks != cpu_to_le32(1)) {
-+bad_block: ext3_error(inode->i_sb, "ext3_xattr_get",
-+ "inode %ld: bad block %d", inode->i_ino, block);
-+ error = -EIO;
-+ goto cleanup;
-+ }
-+ /* find named attribute */
-+ name_len = strlen(name);
-+
-+ error = -ERANGE;
-+ if (name_len > 255)
-+ goto cleanup;
-+ entry = FIRST_ENTRY(bh);
-+ while (!IS_LAST_ENTRY(entry)) {
-+ struct ext3_xattr_entry *next =
-+ EXT3_XATTR_NEXT(entry);
-+ if ((char *)next >= end)
-+ goto bad_block;
-+ if (name_index == entry->e_name_index &&
-+ name_len == entry->e_name_len &&
-+ memcmp(name, entry->e_name, name_len) == 0)
-+ goto found;
-+ entry = next;
-+ }
-+ /* Check the remaining name entries */
-+ while (!IS_LAST_ENTRY(entry)) {
-+ struct ext3_xattr_entry *next =
-+ EXT3_XATTR_NEXT(entry);
-+ if ((char *)next >= end)
-+ goto bad_block;
-+ entry = next;
-+ }
-+ if (ext3_xattr_cache_insert(bh))
-+ ea_idebug(inode, "cache insert failed");
-+ error = -ENOATTR;
-+ goto cleanup;
-+found:
-+ /* check the buffer size */
-+ if (entry->e_value_block != 0)
-+ goto bad_block;
-+ size = le32_to_cpu(entry->e_value_size);
-+ if (size > inode->i_sb->s_blocksize ||
-+ le16_to_cpu(entry->e_value_offs) + size > inode->i_sb->s_blocksize)
-+ goto bad_block;
-+
-+ if (ext3_xattr_cache_insert(bh))
-+ ea_idebug(inode, "cache insert failed");
-+ if (buffer) {
-+ error = -ERANGE;
-+ if (size > buffer_size)
-+ goto cleanup;
-+ /* return value of attribute */
-+ memcpy(buffer, bh->b_data + le16_to_cpu(entry->e_value_offs),
-+ size);
-+ }
-+ error = size;
-+
-+cleanup:
-+ brelse(bh);
-+
-+ return error;
-+}
-+
-+/*
-+ * ext3_xattr_list()
-+ *
-+ * Copy a list of attribute names into the buffer
-+ * provided, or compute the buffer size required.
-+ * Buffer is NULL to compute the size of the buffer required.
-+ *
-+ * Returns a negative error number on failure, or the number of bytes
-+ * used / required on success.
-+ */
-+int
-+ext3_xattr_list(struct inode *inode, char *buffer, size_t buffer_size)
-+{
-+ struct buffer_head *bh = NULL;
-+ struct ext3_xattr_entry *entry;
-+ unsigned int block, size = 0;
-+ char *buf, *end;
-+ int error;
-+
-+ ea_idebug(inode, "buffer=%p, buffer_size=%ld",
-+ buffer, (long)buffer_size);
-+
-+ if (!EXT3_I(inode)->i_file_acl)
-+ return 0;
-+ block = EXT3_I(inode)->i_file_acl;
-+ ea_idebug(inode, "reading block %d", block);
-+ bh = sb_bread(inode->i_sb, block);
-+ if (!bh)
-+ return -EIO;
-+ ea_bdebug(bh, "b_count=%d, refcount=%d",
-+ atomic_read(&(bh->b_count)), le32_to_cpu(HDR(bh)->h_refcount));
-+ end = bh->b_data + bh->b_size;
-+ if (HDR(bh)->h_magic != cpu_to_le32(EXT3_XATTR_MAGIC) ||
-+ HDR(bh)->h_blocks != cpu_to_le32(1)) {
-+bad_block: ext3_error(inode->i_sb, "ext3_xattr_list",
-+ "inode %ld: bad block %d", inode->i_ino, block);
-+ error = -EIO;
-+ goto cleanup;
-+ }
-+ /* compute the size required for the list of attribute names */
-+ for (entry = FIRST_ENTRY(bh); !IS_LAST_ENTRY(entry);
-+ entry = EXT3_XATTR_NEXT(entry)) {
-+ struct ext3_xattr_handler *handler;
-+ struct ext3_xattr_entry *next =
-+ EXT3_XATTR_NEXT(entry);
-+ if ((char *)next >= end)
-+ goto bad_block;
-+
-+ handler = ext3_xattr_handler(entry->e_name_index);
-+ if (handler)
-+ size += handler->list(NULL, inode, entry->e_name,
-+ entry->e_name_len);
-+ }
-+
-+ if (ext3_xattr_cache_insert(bh))
-+ ea_idebug(inode, "cache insert failed");
-+ if (!buffer) {
-+ error = size;
-+ goto cleanup;
-+ } else {
-+ error = -ERANGE;
-+ if (size > buffer_size)
-+ goto cleanup;
-+ }
-+
-+ /* list the attribute names */
-+ buf = buffer;
-+ for (entry = FIRST_ENTRY(bh); !IS_LAST_ENTRY(entry);
-+ entry = EXT3_XATTR_NEXT(entry)) {
-+ struct ext3_xattr_handler *handler;
-+
-+ handler = ext3_xattr_handler(entry->e_name_index);
-+ if (handler)
-+ buf += handler->list(buf, inode, entry->e_name,
-+ entry->e_name_len);
-+ }
-+ error = size;
-+
-+cleanup:
-+ brelse(bh);
-+
-+ return error;
-+}
-+
-+/*
-+ * If the EXT3_FEATURE_COMPAT_EXT_ATTR feature of this file system is
-+ * not set, set it.
-+ */
-+static void ext3_xattr_update_super_block(handle_t *handle,
-+ struct super_block *sb)
-+{
-+ if (EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_EXT_ATTR))
-+ return;
-+
-+ lock_super(sb);
-+ ext3_journal_get_write_access(handle, EXT3_SB(sb)->s_sbh);
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
-+ EXT3_SB(sb)->s_feature_compat |= EXT3_FEATURE_COMPAT_EXT_ATTR;
-+#endif
-+ EXT3_SB(sb)->s_es->s_feature_compat |=
-+ cpu_to_le32(EXT3_FEATURE_COMPAT_EXT_ATTR);
-+ sb->s_dirt = 1;
-+ ext3_journal_dirty_metadata(handle, EXT3_SB(sb)->s_sbh);
-+ unlock_super(sb);
-+}
-+
-+/*
-+ * ext3_xattr_set()
-+ *
-+ * Create, replace or remove an extended attribute for this inode. Buffer
-+ * is NULL to remove an existing extended attribute, and non-NULL to
-+ * either replace an existing extended attribute, or create a new extended
-+ * attribute. The flags XATTR_REPLACE and XATTR_CREATE
-+ * specify that an extended attribute must exist and must not exist
-+ * previous to the call, respectively.
-+ *
-+ * Returns 0, or a negative error number on failure.
-+ */
-+int
-+ext3_xattr_set(handle_t *handle, struct inode *inode, int name_index,
-+ const char *name, const void *value, size_t value_len, int flags)
-+{
-+ struct super_block *sb = inode->i_sb;
-+ struct buffer_head *bh = NULL;
-+ struct ext3_xattr_header *header = NULL;
-+ struct ext3_xattr_entry *here, *last;
-+ unsigned int name_len;
-+ int block = EXT3_I(inode)->i_file_acl;
-+ int min_offs = sb->s_blocksize, not_found = 1, free, error;
-+ char *end;
-+
-+ /*
-+ * header -- Points either into bh, or to a temporarily
-+ * allocated buffer.
-+ * here -- The named entry found, or the place for inserting, within
-+ * the block pointed to by header.
-+ * last -- Points right after the last named entry within the block
-+ * pointed to by header.
-+ * min_offs -- The offset of the first value (values are aligned
-+ * towards the end of the block).
-+ * end -- Points right after the block pointed to by header.
-+ */
-+
-+ ea_idebug(inode, "name=%d.%s, value=%p, value_len=%ld",
-+ name_index, name, value, (long)value_len);
-+
-+ if (IS_RDONLY(inode))
-+ return -EROFS;
-+ if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
-+ return -EPERM;
-+ if (value == NULL)
-+ value_len = 0;
-+ if (name == NULL)
-+ return -EINVAL;
-+ name_len = strlen(name);
-+ if (name_len > 255 || value_len > sb->s_blocksize)
-+ return -ERANGE;
-+ down(&ext3_xattr_sem);
-+
-+ if (block) {
-+ /* The inode already has an extended attribute block. */
-+ bh = sb_bread(sb, block);
-+ error = -EIO;
-+ if (!bh)
-+ goto cleanup;
-+ ea_bdebug(bh, "b_count=%d, refcount=%d",
-+ atomic_read(&(bh->b_count)),
-+ le32_to_cpu(HDR(bh)->h_refcount));
-+ header = HDR(bh);
-+ end = bh->b_data + bh->b_size;
-+ if (header->h_magic != cpu_to_le32(EXT3_XATTR_MAGIC) ||
-+ header->h_blocks != cpu_to_le32(1)) {
-+bad_block: ext3_error(sb, "ext3_xattr_set",
-+ "inode %ld: bad block %d", inode->i_ino, block);
-+ error = -EIO;
-+ goto cleanup;
-+ }
-+ /* Find the named attribute. */
-+ here = FIRST_ENTRY(bh);
-+ while (!IS_LAST_ENTRY(here)) {
-+ struct ext3_xattr_entry *next = EXT3_XATTR_NEXT(here);
-+ if ((char *)next >= end)
-+ goto bad_block;
-+ if (!here->e_value_block && here->e_value_size) {
-+ int offs = le16_to_cpu(here->e_value_offs);
-+ if (offs < min_offs)
-+ min_offs = offs;
-+ }
-+ not_found = name_index - here->e_name_index;
-+ if (!not_found)
-+ not_found = name_len - here->e_name_len;
-+ if (!not_found)
-+ not_found = memcmp(name, here->e_name,name_len);
-+ if (not_found <= 0)
-+ break;
-+ here = next;
-+ }
-+ last = here;
-+ /* We still need to compute min_offs and last. */
-+ while (!IS_LAST_ENTRY(last)) {
-+ struct ext3_xattr_entry *next = EXT3_XATTR_NEXT(last);
-+ if ((char *)next >= end)
-+ goto bad_block;
-+ if (!last->e_value_block && last->e_value_size) {
-+ int offs = le16_to_cpu(last->e_value_offs);
-+ if (offs < min_offs)
-+ min_offs = offs;
-+ }
-+ last = next;
-+ }
-+
-+ /* Check whether we have enough space left. */
-+ free = min_offs - ((char*)last - (char*)header) - sizeof(__u32);
-+ } else {
-+ /* We will use a new extended attribute block. */
-+ free = sb->s_blocksize -
-+ sizeof(struct ext3_xattr_header) - sizeof(__u32);
-+ here = last = NULL; /* avoid gcc uninitialized warning. */
-+ }
-+
-+ if (not_found) {
-+ /* Request to remove a nonexistent attribute? */
-+ error = -ENOATTR;
-+ if (flags & XATTR_REPLACE)
-+ goto cleanup;
-+ error = 0;
-+ if (value == NULL)
-+ goto cleanup;
-+ else
-+ free -= EXT3_XATTR_LEN(name_len);
-+ } else {
-+ /* Request to create an existing attribute? */
-+ error = -EEXIST;
-+ if (flags & XATTR_CREATE)
-+ goto cleanup;
-+ if (!here->e_value_block && here->e_value_size) {
-+ unsigned int size = le32_to_cpu(here->e_value_size);
-+
-+ if (le16_to_cpu(here->e_value_offs) + size >
-+ sb->s_blocksize || size > sb->s_blocksize)
-+ goto bad_block;
-+ free += EXT3_XATTR_SIZE(size);
-+ }
-+ }
-+ free -= EXT3_XATTR_SIZE(value_len);
-+ error = -ENOSPC;
-+ if (free < 0)
-+ goto cleanup;
-+
-+ /* Here we know that we can set the new attribute. */
-+
-+ if (header) {
-+ if (header->h_refcount == cpu_to_le32(1)) {
-+ ea_bdebug(bh, "modifying in-place");
-+ ext3_xattr_cache_remove(bh);
-+ error = ext3_journal_get_write_access(handle, bh);
-+ if (error)
-+ goto cleanup;
-+ } else {
-+ int offset;
-+
-+ ea_bdebug(bh, "cloning");
-+ header = kmalloc(bh->b_size, GFP_KERNEL);
-+ error = -ENOMEM;
-+ if (header == NULL)
-+ goto cleanup;
-+ memcpy(header, HDR(bh), bh->b_size);
-+ header->h_refcount = cpu_to_le32(1);
-+ offset = (char *)header - bh->b_data;
-+ here = ENTRY((char *)here + offset);
-+ last = ENTRY((char *)last + offset);
-+ }
-+ } else {
-+ /* Allocate a buffer where we construct the new block. */
-+ header = kmalloc(sb->s_blocksize, GFP_KERNEL);
-+ error = -ENOMEM;
-+ if (header == NULL)
-+ goto cleanup;
-+ memset(header, 0, sb->s_blocksize);
-+ end = (char *)header + sb->s_blocksize;
-+ header->h_magic = cpu_to_le32(EXT3_XATTR_MAGIC);
-+ header->h_blocks = header->h_refcount = cpu_to_le32(1);
-+ last = here = ENTRY(header+1);
-+ }
-+
-+ if (not_found) {
-+ /* Insert the new name. */
-+ int size = EXT3_XATTR_LEN(name_len);
-+ int rest = (char *)last - (char *)here;
-+ memmove((char *)here + size, here, rest);
-+ memset(here, 0, size);
-+ here->e_name_index = name_index;
-+ here->e_name_len = name_len;
-+ memcpy(here->e_name, name, name_len);
-+ } else {
-+ /* Remove the old value. */
-+ if (!here->e_value_block && here->e_value_size) {
-+ char *first_val = (char *)header + min_offs;
-+ int offs = le16_to_cpu(here->e_value_offs);
-+ char *val = (char *)header + offs;
-+ size_t size = EXT3_XATTR_SIZE(
-+ le32_to_cpu(here->e_value_size));
-+ memmove(first_val + size, first_val, val - first_val);
-+ memset(first_val, 0, size);
-+ here->e_value_offs = 0;
-+ min_offs += size;
-+
-+ /* Adjust all value offsets. */
-+ last = ENTRY(header+1);
-+ while (!IS_LAST_ENTRY(last)) {
-+ int o = le16_to_cpu(last->e_value_offs);
-+ if (!last->e_value_block && o < offs)
-+ last->e_value_offs =
-+ cpu_to_le16(o + size);
-+ last = EXT3_XATTR_NEXT(last);
-+ }
-+ }
-+ if (value == NULL) {
-+ /* Remove this attribute. */
-+ if (EXT3_XATTR_NEXT(ENTRY(header+1)) == last) {
-+ /* This block is now empty. */
-+ error = ext3_xattr_set2(handle, inode, bh,NULL);
-+ goto cleanup;
-+ } else {
-+ /* Remove the old name. */
-+ int size = EXT3_XATTR_LEN(name_len);
-+ last = ENTRY((char *)last - size);
-+ memmove(here, (char*)here + size,
-+ (char*)last - (char*)here);
-+ memset(last, 0, size);
-+ }
-+ }
-+ }
-+
-+ if (value != NULL) {
-+ /* Insert the new value. */
-+ here->e_value_size = cpu_to_le32(value_len);
-+ if (value_len) {
-+ size_t size = EXT3_XATTR_SIZE(value_len);
-+ char *val = (char *)header + min_offs - size;
-+ here->e_value_offs =
-+ cpu_to_le16((char *)val - (char *)header);
-+ memset(val + size - EXT3_XATTR_PAD, 0,
-+ EXT3_XATTR_PAD); /* Clear the pad bytes. */
-+ memcpy(val, value, value_len);
-+ }
-+ }
-+ ext3_xattr_rehash(header, here);
-+
-+ error = ext3_xattr_set2(handle, inode, bh, header);
-+
-+cleanup:
-+ brelse(bh);
-+ if (!(bh && header == HDR(bh)))
-+ kfree(header);
-+ up(&ext3_xattr_sem);
-+
-+ return error;
-+}
-+
-+/*
-+ * Second half of ext3_xattr_set(): Update the file system.
-+ */
-+static int
-+ext3_xattr_set2(handle_t *handle, struct inode *inode,
-+ struct buffer_head *old_bh, struct ext3_xattr_header *header)
-+{
-+ struct super_block *sb = inode->i_sb;
-+ struct buffer_head *new_bh = NULL;
-+ int error;
-+
-+ if (header) {
-+ new_bh = ext3_xattr_cache_find(inode, header);
-+ if (new_bh) {
-+ /*
-+ * We found an identical block in the cache.
-+ * The old block will be released after updating
-+ * the inode.
-+ */
-+ ea_bdebug(old_bh, "reusing block %ld",
-+ new_bh->b_blocknr);
-+
-+ error = -EDQUOT;
-+ if (ext3_xattr_quota_alloc(inode, 1))
-+ goto cleanup;
-+
-+ error = ext3_journal_get_write_access(handle, new_bh);
-+ if (error)
-+ goto cleanup;
-+ HDR(new_bh)->h_refcount = cpu_to_le32(
-+ le32_to_cpu(HDR(new_bh)->h_refcount) + 1);
-+ ea_bdebug(new_bh, "refcount now=%d",
-+ le32_to_cpu(HDR(new_bh)->h_refcount));
-+ } else if (old_bh && header == HDR(old_bh)) {
-+ /* Keep this block. */
-+ new_bh = old_bh;
-+ (void)ext3_xattr_cache_insert(new_bh);
-+ } else {
-+ /* We need to allocate a new block */
-+ int force = EXT3_I(inode)->i_file_acl != 0;
-+ int block = ext3_xattr_new_block(handle, inode,
-+ &error, force);
-+ if (error)
-+ goto cleanup;
-+ ea_idebug(inode, "creating block %d", block);
-+
-+ new_bh = sb_getblk(sb, block);
-+ if (!new_bh) {
-+getblk_failed: ext3_xattr_free_block(handle, inode, block);
-+ error = -EIO;
-+ goto cleanup;
-+ }
-+ lock_buffer(new_bh);
-+ error = ext3_journal_get_create_access(handle, new_bh);
-+ if (error) {
-+ unlock_buffer(new_bh);
-+ goto getblk_failed;
-+ }
-+ memcpy(new_bh->b_data, header, new_bh->b_size);
-+ mark_buffer_uptodate(new_bh, 1);
-+ unlock_buffer(new_bh);
-+ (void)ext3_xattr_cache_insert(new_bh);
-+
-+ ext3_xattr_update_super_block(handle, sb);
-+ }
-+ error = ext3_journal_dirty_metadata(handle, new_bh);
-+ if (error)
-+ goto cleanup;
-+ }
-+
-+ /* Update the inode. */
-+ EXT3_I(inode)->i_file_acl = new_bh ? new_bh->b_blocknr : 0;
-+ inode->i_ctime = CURRENT_TIME;
-+ ext3_mark_inode_dirty(handle, inode);
-+ if (IS_SYNC(inode))
-+ handle->h_sync = 1;
-+
-+ error = 0;
-+ if (old_bh && old_bh != new_bh) {
-+ /*
-+ * If there was an old block, and we are not still using it,
-+ * we now release the old block.
-+ */
-+ unsigned int refcount = le32_to_cpu(HDR(old_bh)->h_refcount);
-+
-+ error = ext3_journal_get_write_access(handle, old_bh);
-+ if (error)
-+ goto cleanup;
-+ if (refcount == 1) {
-+ /* Free the old block. */
-+ ea_bdebug(old_bh, "freeing");
-+ ext3_xattr_free_block(handle, inode, old_bh->b_blocknr);
-+
-+ /* ext3_forget() calls bforget() for us, but we
-+ let our caller release old_bh, so we need to
-+ duplicate the handle before. */
-+ get_bh(old_bh);
-+ ext3_forget(handle, 1, inode, old_bh,old_bh->b_blocknr);
-+ } else {
-+ /* Decrement the refcount only. */
-+ refcount--;
-+ HDR(old_bh)->h_refcount = cpu_to_le32(refcount);
-+ ext3_xattr_quota_free(inode);
-+ ext3_journal_dirty_metadata(handle, old_bh);
-+ ea_bdebug(old_bh, "refcount now=%d", refcount);
-+ }
-+ }
-+
-+cleanup:
-+ if (old_bh != new_bh)
-+ brelse(new_bh);
-+
-+ return error;
-+}
-+
-+/*
-+ * ext3_xattr_delete_inode()
-+ *
-+ * Free extended attribute resources associated with this inode. This
-+ * is called immediately before an inode is freed.
-+ */
-+void
-+ext3_xattr_delete_inode(handle_t *handle, struct inode *inode)
-+{
-+ struct buffer_head *bh;
-+ unsigned int block = EXT3_I(inode)->i_file_acl;
-+
-+ if (!block)
-+ return;
-+ down(&ext3_xattr_sem);
-+
-+ bh = sb_bread(inode->i_sb, block);
-+ if (!bh) {
-+ ext3_error(inode->i_sb, "ext3_xattr_delete_inode",
-+ "inode %ld: block %d read error", inode->i_ino, block);
-+ goto cleanup;
-+ }
-+ ea_bdebug(bh, "b_count=%d", atomic_read(&(bh->b_count)));
-+ if (HDR(bh)->h_magic != cpu_to_le32(EXT3_XATTR_MAGIC) ||
-+ HDR(bh)->h_blocks != cpu_to_le32(1)) {
-+ ext3_error(inode->i_sb, "ext3_xattr_delete_inode",
-+ "inode %ld: bad block %d", inode->i_ino, block);
-+ goto cleanup;
-+ }
-+ ext3_journal_get_write_access(handle, bh);
-+ ea_bdebug(bh, "refcount now=%d", le32_to_cpu(HDR(bh)->h_refcount) - 1);
-+ if (HDR(bh)->h_refcount == cpu_to_le32(1)) {
-+ ext3_xattr_cache_remove(bh);
-+ ext3_xattr_free_block(handle, inode, block);
-+ ext3_forget(handle, 1, inode, bh, block);
-+ bh = NULL;
-+ } else {
-+ HDR(bh)->h_refcount = cpu_to_le32(
-+ le32_to_cpu(HDR(bh)->h_refcount) - 1);
-+ ext3_journal_dirty_metadata(handle, bh);
-+ if (IS_SYNC(inode))
-+ handle->h_sync = 1;
-+ ext3_xattr_quota_free(inode);
-+ }
-+ EXT3_I(inode)->i_file_acl = 0;
-+
-+cleanup:
-+ brelse(bh);
-+ up(&ext3_xattr_sem);
-+}
-+
-+/*
-+ * ext3_xattr_put_super()
-+ *
-+ * This is called when a file system is unmounted.
-+ */
-+void
-+ext3_xattr_put_super(struct super_block *sb)
-+{
-+#ifdef CONFIG_EXT3_FS_XATTR_SHARING
-+ mb_cache_shrink(ext3_xattr_cache, sb->s_dev);
-+#endif
-+}
-+
-+#ifdef CONFIG_EXT3_FS_XATTR_SHARING
-+
-+/*
-+ * ext3_xattr_cache_insert()
-+ *
-+ * Create a new entry in the extended attribute cache, and insert
-+ * it unless such an entry is already in the cache.
-+ *
-+ * Returns 0, or a negative error number on failure.
-+ */
-+static int
-+ext3_xattr_cache_insert(struct buffer_head *bh)
-+{
-+ __u32 hash = le32_to_cpu(HDR(bh)->h_hash);
-+ struct mb_cache_entry *ce;
-+ int error;
-+
-+ ce = mb_cache_entry_alloc(ext3_xattr_cache);
-+ if (!ce)
-+ return -ENOMEM;
-+ error = mb_cache_entry_insert(ce, bh->b_dev, bh->b_blocknr, &hash);
-+ if (error) {
-+ mb_cache_entry_free(ce);
-+ if (error == -EBUSY) {
-+ ea_bdebug(bh, "already in cache (%d cache entries)",
-+ atomic_read(&ext3_xattr_cache->c_entry_count));
-+ error = 0;
-+ }
-+ } else {
-+ ea_bdebug(bh, "inserting [%x] (%d cache entries)", (int)hash,
-+ atomic_read(&ext3_xattr_cache->c_entry_count));
-+ mb_cache_entry_release(ce);
-+ }
-+ return error;
-+}
-+
-+/*
-+ * ext3_xattr_cmp()
-+ *
-+ * Compare two extended attribute blocks for equality.
-+ *
-+ * Returns 0 if the blocks are equal, 1 if they differ, and
-+ * a negative error number on errors.
-+ */
-+static int
-+ext3_xattr_cmp(struct ext3_xattr_header *header1,
-+ struct ext3_xattr_header *header2)
-+{
-+ struct ext3_xattr_entry *entry1, *entry2;
-+
-+ entry1 = ENTRY(header1+1);
-+ entry2 = ENTRY(header2+1);
-+ while (!IS_LAST_ENTRY(entry1)) {
-+ if (IS_LAST_ENTRY(entry2))
-+ return 1;
-+ if (entry1->e_hash != entry2->e_hash ||
-+ entry1->e_name_len != entry2->e_name_len ||
-+ entry1->e_value_size != entry2->e_value_size ||
-+ memcmp(entry1->e_name, entry2->e_name, entry1->e_name_len))
-+ return 1;
-+ if (entry1->e_value_block != 0 || entry2->e_value_block != 0)
-+ return -EIO;
-+ if (memcmp((char *)header1 + le16_to_cpu(entry1->e_value_offs),
-+ (char *)header2 + le16_to_cpu(entry2->e_value_offs),
-+ le32_to_cpu(entry1->e_value_size)))
-+ return 1;
-+
-+ entry1 = EXT3_XATTR_NEXT(entry1);
-+ entry2 = EXT3_XATTR_NEXT(entry2);
-+ }
-+ if (!IS_LAST_ENTRY(entry2))
-+ return 1;
-+ return 0;
-+}
-+
-+/*
-+ * ext3_xattr_cache_find()
-+ *
-+ * Find an identical extended attribute block.
-+ *
-+ * Returns a pointer to the block found, or NULL if such a block was
-+ * not found or an error occurred.
-+ */
-+static struct buffer_head *
-+ext3_xattr_cache_find(struct inode *inode, struct ext3_xattr_header *header)
-+{
-+ __u32 hash = le32_to_cpu(header->h_hash);
-+ struct mb_cache_entry *ce;
-+
-+ if (!header->h_hash)
-+ return NULL; /* never share */
-+ ea_idebug(inode, "looking for cached blocks [%x]", (int)hash);
-+ ce = mb_cache_entry_find_first(ext3_xattr_cache, 0, inode->i_dev, hash);
-+ while (ce) {
-+ struct buffer_head *bh = sb_bread(inode->i_sb, ce->e_block);
-+
-+ if (!bh) {
-+ ext3_error(inode->i_sb, "ext3_xattr_cache_find",
-+ "inode %ld: block %ld read error",
-+ inode->i_ino, ce->e_block);
-+ } else if (le32_to_cpu(HDR(bh)->h_refcount) >
-+ EXT3_XATTR_REFCOUNT_MAX) {
-+ ea_idebug(inode, "block %ld refcount %d>%d",ce->e_block,
-+ le32_to_cpu(HDR(bh)->h_refcount),
-+ EXT3_XATTR_REFCOUNT_MAX);
-+ } else if (!ext3_xattr_cmp(header, HDR(bh))) {
-+ ea_bdebug(bh, "b_count=%d",atomic_read(&(bh->b_count)));
-+ mb_cache_entry_release(ce);
-+ return bh;
-+ }
-+ brelse(bh);
-+ ce = mb_cache_entry_find_next(ce, 0, inode->i_dev, hash);
-+ }
-+ return NULL;
-+}
-+
-+/*
-+ * ext3_xattr_cache_remove()
-+ *
-+ * Remove the cache entry of a block from the cache. Called when a
-+ * block becomes invalid.
-+ */
-+static void
-+ext3_xattr_cache_remove(struct buffer_head *bh)
-+{
-+ struct mb_cache_entry *ce;
-+
-+ ce = mb_cache_entry_get(ext3_xattr_cache, bh->b_dev, bh->b_blocknr);
-+ if (ce) {
-+ ea_bdebug(bh, "removing (%d cache entries remaining)",
-+ atomic_read(&ext3_xattr_cache->c_entry_count)-1);
-+ mb_cache_entry_free(ce);
-+ } else
-+ ea_bdebug(bh, "no cache entry");
-+}
-+
-+#define NAME_HASH_SHIFT 5
-+#define VALUE_HASH_SHIFT 16
-+
-+/*
-+ * ext3_xattr_hash_entry()
-+ *
-+ * Compute the hash of an extended attribute.
-+ */
-+static inline void ext3_xattr_hash_entry(struct ext3_xattr_header *header,
-+ struct ext3_xattr_entry *entry)
-+{
-+ __u32 hash = 0;
-+ char *name = entry->e_name;
-+ int n;
-+
-+ for (n=0; n < entry->e_name_len; n++) {
-+ hash = (hash << NAME_HASH_SHIFT) ^
-+ (hash >> (8*sizeof(hash) - NAME_HASH_SHIFT)) ^
-+ *name++;
-+ }
-+
-+ if (entry->e_value_block == 0 && entry->e_value_size != 0) {
-+ __u32 *value = (__u32 *)((char *)header +
-+ le16_to_cpu(entry->e_value_offs));
-+ for (n = (le32_to_cpu(entry->e_value_size) +
-+ EXT3_XATTR_ROUND) >> EXT3_XATTR_PAD_BITS; n; n--) {
-+ hash = (hash << VALUE_HASH_SHIFT) ^
-+ (hash >> (8*sizeof(hash) - VALUE_HASH_SHIFT)) ^
-+ le32_to_cpu(*value++);
-+ }
-+ }
-+ entry->e_hash = cpu_to_le32(hash);
-+}
-+
-+#undef NAME_HASH_SHIFT
-+#undef VALUE_HASH_SHIFT
-+
-+#define BLOCK_HASH_SHIFT 16
-+
-+/*
-+ * ext3_xattr_rehash()
-+ *
-+ * Re-compute the extended attribute hash value after an entry has changed.
-+ */
-+static void ext3_xattr_rehash(struct ext3_xattr_header *header,
-+ struct ext3_xattr_entry *entry)
-+{
-+ struct ext3_xattr_entry *here;
-+ __u32 hash = 0;
-+
-+ ext3_xattr_hash_entry(header, entry);
-+ here = ENTRY(header+1);
-+ while (!IS_LAST_ENTRY(here)) {
-+ if (!here->e_hash) {
-+ /* Block is not shared if an entry's hash value == 0 */
-+ hash = 0;
-+ break;
-+ }
-+ hash = (hash << BLOCK_HASH_SHIFT) ^
-+ (hash >> (8*sizeof(hash) - BLOCK_HASH_SHIFT)) ^
-+ le32_to_cpu(here->e_hash);
-+ here = EXT3_XATTR_NEXT(here);
-+ }
-+ header->h_hash = cpu_to_le32(hash);
-+}
-+
-+#undef BLOCK_HASH_SHIFT
-+
-+int __init
-+init_ext3_xattr(void)
-+{
-+ ext3_xattr_cache = mb_cache_create("ext3_xattr", NULL,
-+ sizeof(struct mb_cache_entry) +
-+ sizeof(struct mb_cache_entry_index), 1, 61);
-+ if (!ext3_xattr_cache)
-+ return -ENOMEM;
-+
-+ return 0;
-+}
-+
-+void
-+exit_ext3_xattr(void)
-+{
-+ if (ext3_xattr_cache)
-+ mb_cache_destroy(ext3_xattr_cache);
-+ ext3_xattr_cache = NULL;
-+}
-+
-+#else /* CONFIG_EXT3_FS_XATTR_SHARING */
-+
-+int __init
-+init_ext3_xattr(void)
-+{
-+ return 0;
-+}
-+
-+void
-+exit_ext3_xattr(void)
-+{
-+}
-+
-+#endif /* CONFIG_EXT3_FS_XATTR_SHARING */
---- /dev/null 2003-01-30 18:24:37.000000000 +0800
-+++ linux-2.4.20-root/fs/ext3/xattr_user.c 2003-05-07 18:08:03.000000000 +0800
-@@ -0,0 +1,111 @@
-+/*
-+ * linux/fs/ext3/xattr_user.c
-+ * Handler for extended user attributes.
-+ *
-+ * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/string.h>
-+#include <linux/fs.h>
-+#include <linux/ext3_jbd.h>
-+#include <linux/ext3_fs.h>
-+#include <linux/ext3_xattr.h>
-+
-+#ifdef CONFIG_EXT3_FS_POSIX_ACL
-+# include <linux/ext3_acl.h>
-+#endif
-+
-+#define XATTR_USER_PREFIX "user."
-+
-+static size_t
-+ext3_xattr_user_list(char *list, struct inode *inode,
-+ const char *name, int name_len)
-+{
-+ const int prefix_len = sizeof(XATTR_USER_PREFIX)-1;
-+
-+ if (!test_opt(inode->i_sb, XATTR_USER))
-+ return 0;
-+
-+ if (list) {
-+ memcpy(list, XATTR_USER_PREFIX, prefix_len);
-+ memcpy(list+prefix_len, name, name_len);
-+ list[prefix_len + name_len] = '\0';
-+ }
-+ return prefix_len + name_len + 1;
-+}
-+
-+static int
-+ext3_xattr_user_get(struct inode *inode, const char *name,
-+ void *buffer, size_t size)
-+{
-+ int error;
-+
-+ if (strcmp(name, "") == 0)
-+ return -EINVAL;
-+ if (!test_opt(inode->i_sb, XATTR_USER))
-+ return -ENOTSUP;
-+#ifdef CONFIG_EXT3_FS_POSIX_ACL
-+ error = ext3_permission_locked(inode, MAY_READ);
-+#else
-+ error = permission(inode, MAY_READ);
-+#endif
-+ if (error)
-+ return error;
-+
-+ return ext3_xattr_get(inode, EXT3_XATTR_INDEX_USER, name,
-+ buffer, size);
-+}
-+
-+static int
-+ext3_xattr_user_set(struct inode *inode, const char *name,
-+ const void *value, size_t size, int flags)
-+{
-+ handle_t *handle;
-+ int error;
-+
-+ if (strcmp(name, "") == 0)
-+ return -EINVAL;
-+ if (!test_opt(inode->i_sb, XATTR_USER))
-+ return -ENOTSUP;
-+ if ( !S_ISREG(inode->i_mode) &&
-+ (!S_ISDIR(inode->i_mode) || inode->i_mode & S_ISVTX))
-+ return -EPERM;
-+#ifdef CONFIG_EXT3_FS_POSIX_ACL
-+ error = ext3_permission_locked(inode, MAY_WRITE);
-+#else
-+ error = permission(inode, MAY_WRITE);
-+#endif
-+ if (error)
-+ return error;
-+
-+ handle = ext3_journal_start(inode, EXT3_XATTR_TRANS_BLOCKS);
-+ if (IS_ERR(handle))
-+ return PTR_ERR(handle);
-+ error = ext3_xattr_set(handle, inode, EXT3_XATTR_INDEX_USER, name,
-+ value, size, flags);
-+ ext3_journal_stop(handle, inode);
-+
-+ return error;
-+}
-+
-+struct ext3_xattr_handler ext3_xattr_user_handler = {
-+ prefix: XATTR_USER_PREFIX,
-+ list: ext3_xattr_user_list,
-+ get: ext3_xattr_user_get,
-+ set: ext3_xattr_user_set,
-+};
-+
-+int __init
-+init_ext3_xattr_user(void)
-+{
-+ return ext3_xattr_register(EXT3_XATTR_INDEX_USER,
-+ &ext3_xattr_user_handler);
-+}
-+
-+void
-+exit_ext3_xattr_user(void)
-+{
-+ ext3_xattr_unregister(EXT3_XATTR_INDEX_USER,
-+ &ext3_xattr_user_handler);
-+}
---- linux-2.4.20/fs/jfs/jfs_xattr.h~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:15.000000000 +0800
-+++ linux-2.4.20-root/fs/jfs/jfs_xattr.h 2003-05-07 18:08:03.000000000 +0800
-@@ -52,8 +52,10 @@ struct jfs_ea_list {
- #define END_EALIST(ealist) \
- ((struct jfs_ea *) (((char *) (ealist)) + EALIST_SIZE(ealist)))
-
--extern int __jfs_setxattr(struct inode *, const char *, void *, size_t, int);
--extern int jfs_setxattr(struct dentry *, const char *, void *, size_t, int);
-+extern int __jfs_setxattr(struct inode *, const char *, const void *, size_t,
-+ int);
-+extern int jfs_setxattr(struct dentry *, const char *, const void *, size_t,
-+ int);
- extern ssize_t __jfs_getxattr(struct inode *, const char *, void *, size_t);
- extern ssize_t jfs_getxattr(struct dentry *, const char *, void *, size_t);
- extern ssize_t jfs_listxattr(struct dentry *, char *, size_t);
---- linux-2.4.20/fs/jfs/xattr.c~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:15.000000000 +0800
-+++ linux-2.4.20-root/fs/jfs/xattr.c 2003-05-07 18:08:03.000000000 +0800
-@@ -641,7 +641,7 @@ static int ea_put(struct inode *inode, s
- }
-
- static int can_set_xattr(struct inode *inode, const char *name,
-- void *value, size_t value_len)
-+ const void *value, size_t value_len)
- {
- if (IS_RDONLY(inode))
- return -EROFS;
-@@ -660,7 +660,7 @@ static int can_set_xattr(struct inode *i
- return permission(inode, MAY_WRITE);
- }
-
--int __jfs_setxattr(struct inode *inode, const char *name, void *value,
-+int __jfs_setxattr(struct inode *inode, const char *name, const void *value,
- size_t value_len, int flags)
- {
- struct jfs_ea_list *ealist;
-@@ -799,7 +799,7 @@ int __jfs_setxattr(struct inode *inode,
- return rc;
- }
-
--int jfs_setxattr(struct dentry *dentry, const char *name, void *value,
-+int jfs_setxattr(struct dentry *dentry, const char *name, const void *value,
- size_t value_len, int flags)
- {
- if (value == NULL) { /* empty EA, do not remove */
---- /dev/null 2003-01-30 18:24:37.000000000 +0800
-+++ linux-2.4.20-root/fs/mbcache.c 2003-05-07 18:08:03.000000000 +0800
-@@ -0,0 +1,648 @@
-+/*
-+ * linux/fs/mbcache.c
-+ * (C) 2001-2002 Andreas Gruenbacher, <a.gruenbacher@computer.org>
-+ */
-+
-+/*
-+ * Filesystem Meta Information Block Cache (mbcache)
-+ *
-+ * The mbcache caches blocks of block devices that need to be located
-+ * by their device/block number, as well as by other criteria (such
-+ * as the block's contents).
-+ *
-+ * There can only be one cache entry in a cache per device and block number.
-+ * Additional indexes need not be unique in this sense. The number of
-+ * additional indexes (=other criteria) can be hardwired at compile time
-+ * or specified at cache create time.
-+ *
-+ * Each cache entry is of fixed size. An entry may be `valid' or `invalid'
-+ * in the cache. A valid entry is in the main hash tables of the cache,
-+ * and may also be in the lru list. An invalid entry is not in any hashes
-+ * or lists.
-+ *
-+ * A valid cache entry is only in the lru list if no handles refer to it.
-+ * Invalid cache entries will be freed when the last handle to the cache
-+ * entry is released. Entries that cannot be freed immediately are put
-+ * back on the lru list.
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+
-+#include <linux/fs.h>
-+#include <linux/slab.h>
-+#include <linux/sched.h>
-+#include <linux/cache_def.h>
-+#include <linux/version.h>
-+#include <linux/init.h>
-+#include <linux/mbcache.h>
-+
-+
-+#ifdef MB_CACHE_DEBUG
-+# define mb_debug(f...) do { \
-+ printk(KERN_DEBUG f); \
-+ printk("\n"); \
-+ } while (0)
-+#define mb_assert(c) do { if (!(c)) \
-+ printk(KERN_ERR "assertion " #c " failed\n"); \
-+ } while(0)
-+#else
-+# define mb_debug(f...) do { } while(0)
-+# define mb_assert(c) do { } while(0)
-+#endif
-+#define mb_error(f...) do { \
-+ printk(KERN_ERR f); \
-+ printk("\n"); \
-+ } while(0)
-+
-+MODULE_AUTHOR("Andreas Gruenbacher <a.gruenbacher@computer.org>");
-+MODULE_DESCRIPTION("Meta block cache (for extended attributes)");
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
-+MODULE_LICENSE("GPL");
-+#endif
-+
-+EXPORT_SYMBOL(mb_cache_create);
-+EXPORT_SYMBOL(mb_cache_shrink);
-+EXPORT_SYMBOL(mb_cache_destroy);
-+EXPORT_SYMBOL(mb_cache_entry_alloc);
-+EXPORT_SYMBOL(mb_cache_entry_insert);
-+EXPORT_SYMBOL(mb_cache_entry_release);
-+EXPORT_SYMBOL(mb_cache_entry_takeout);
-+EXPORT_SYMBOL(mb_cache_entry_free);
-+EXPORT_SYMBOL(mb_cache_entry_dup);
-+EXPORT_SYMBOL(mb_cache_entry_get);
-+#if !defined(MB_CACHE_INDEXES_COUNT) || (MB_CACHE_INDEXES_COUNT > 0)
-+EXPORT_SYMBOL(mb_cache_entry_find_first);
-+EXPORT_SYMBOL(mb_cache_entry_find_next);
-+#endif
-+
-+
-+/*
-+ * Global data: list of all mbcache's, lru list, and a spinlock for
-+ * accessing cache data structures on SMP machines. The lru list is
-+ * global across all mbcaches.
-+ */
-+
-+static LIST_HEAD(mb_cache_list);
-+static LIST_HEAD(mb_cache_lru_list);
-+static spinlock_t mb_cache_spinlock = SPIN_LOCK_UNLOCKED;
-+
-+static inline int
-+mb_cache_indexes(struct mb_cache *cache)
-+{
-+#ifdef MB_CACHE_INDEXES_COUNT
-+ return MB_CACHE_INDEXES_COUNT;
-+#else
-+ return cache->c_indexes_count;
-+#endif
-+}
-+
-+/*
-+ * What the mbcache registers as to get shrunk dynamically.
-+ */
-+
-+static void
-+mb_cache_memory_pressure(int priority, unsigned int gfp_mask);
-+
-+static struct cache_definition mb_cache_definition = {
-+ "mb_cache",
-+ mb_cache_memory_pressure
-+};
-+
-+
-+static inline int
-+__mb_cache_entry_is_hashed(struct mb_cache_entry *ce)
-+{
-+ return !list_empty(&ce->e_block_list);
-+}
-+
-+
-+static inline void
-+__mb_cache_entry_unhash(struct mb_cache_entry *ce)
-+{
-+ int n;
-+
-+ if (__mb_cache_entry_is_hashed(ce)) {
-+ list_del_init(&ce->e_block_list);
-+ for (n=0; n<mb_cache_indexes(ce->e_cache); n++)
-+ list_del(&ce->e_indexes[n].o_list);
-+ }
-+}
-+
-+
-+static inline void
-+__mb_cache_entry_forget(struct mb_cache_entry *ce, int gfp_mask)
-+{
-+ struct mb_cache *cache = ce->e_cache;
-+
-+ mb_assert(atomic_read(&ce->e_used) == 0);
-+ if (cache->c_op.free && cache->c_op.free(ce, gfp_mask)) {
-+ /* free failed -- put back on the lru list
-+ for freeing later. */
-+ spin_lock(&mb_cache_spinlock);
-+ list_add(&ce->e_lru_list, &mb_cache_lru_list);
-+ spin_unlock(&mb_cache_spinlock);
-+ } else {
-+ kmem_cache_free(cache->c_entry_cache, ce);
-+ atomic_dec(&cache->c_entry_count);
-+ }
-+}
-+
-+
-+static inline void
-+__mb_cache_entry_release_unlock(struct mb_cache_entry *ce)
-+{
-+ if (atomic_dec_and_test(&ce->e_used)) {
-+ if (__mb_cache_entry_is_hashed(ce))
-+ list_add_tail(&ce->e_lru_list, &mb_cache_lru_list);
-+ else {
-+ spin_unlock(&mb_cache_spinlock);
-+ __mb_cache_entry_forget(ce, GFP_KERNEL);
-+ return;
-+ }
-+ }
-+ spin_unlock(&mb_cache_spinlock);
-+}
-+
-+
-+/*
-+ * mb_cache_memory_pressure() memory pressure callback
-+ *
-+ * This function is called by the kernel memory management when memory
-+ * gets low.
-+ *
-+ * @priority: Amount by which to shrink the cache (0 = highes priority)
-+ * @gfp_mask: (ignored)
-+ */
-+static void
-+mb_cache_memory_pressure(int priority, unsigned int gfp_mask)
-+{
-+ LIST_HEAD(free_list);
-+ struct list_head *l, *ltmp;
-+ int count = 0;
-+
-+ spin_lock(&mb_cache_spinlock);
-+ list_for_each(l, &mb_cache_list) {
-+ struct mb_cache *cache =
-+ list_entry(l, struct mb_cache, c_cache_list);
-+ mb_debug("cache %s (%d)", cache->c_name,
-+ atomic_read(&cache->c_entry_count));
-+ count += atomic_read(&cache->c_entry_count);
-+ }
-+ mb_debug("trying to free %d of %d entries",
-+ count / (priority ? priority : 1), count);
-+ if (priority)
-+ count /= priority;
-+ while (count-- && !list_empty(&mb_cache_lru_list)) {
-+ struct mb_cache_entry *ce =
-+ list_entry(mb_cache_lru_list.next,
-+ struct mb_cache_entry, e_lru_list);
-+ list_del(&ce->e_lru_list);
-+ __mb_cache_entry_unhash(ce);
-+ list_add_tail(&ce->e_lru_list, &free_list);
-+ }
-+ spin_unlock(&mb_cache_spinlock);
-+ list_for_each_safe(l, ltmp, &free_list) {
-+ __mb_cache_entry_forget(list_entry(l, struct mb_cache_entry,
-+ e_lru_list), gfp_mask);
-+ }
-+}
-+
-+
-+/*
-+ * mb_cache_create() create a new cache
-+ *
-+ * All entries in one cache are equal size. Cache entries may be from
-+ * multiple devices. If this is the first mbcache created, registers
-+ * the cache with kernel memory management. Returns NULL if no more
-+ * memory was available.
-+ *
-+ * @name: name of the cache (informal)
-+ * @cache_op: contains the callback called when freeing a cache entry
-+ * @entry_size: The size of a cache entry, including
-+ * struct mb_cache_entry
-+ * @indexes_count: number of additional indexes in the cache. Must equal
-+ * MB_CACHE_INDEXES_COUNT if the number of indexes is
-+ * hardwired.
-+ * @bucket_count: number of hash buckets
-+ */
-+struct mb_cache *
-+mb_cache_create(const char *name, struct mb_cache_op *cache_op,
-+ size_t entry_size, int indexes_count, int bucket_count)
-+{
-+ int m=0, n;
-+ struct mb_cache *cache = NULL;
-+
-+ if(entry_size < sizeof(struct mb_cache_entry) +
-+ indexes_count * sizeof(struct mb_cache_entry_index))
-+ return NULL;
-+
-+ MOD_INC_USE_COUNT;
-+ cache = kmalloc(sizeof(struct mb_cache) +
-+ indexes_count * sizeof(struct list_head), GFP_KERNEL);
-+ if (!cache)
-+ goto fail;
-+ cache->c_name = name;
-+ cache->c_op.free = NULL;
-+ if (cache_op)
-+ cache->c_op.free = cache_op->free;
-+ atomic_set(&cache->c_entry_count, 0);
-+ cache->c_bucket_count = bucket_count;
-+#ifdef MB_CACHE_INDEXES_COUNT
-+ mb_assert(indexes_count == MB_CACHE_INDEXES_COUNT);
-+#else
-+ cache->c_indexes_count = indexes_count;
-+#endif
-+ cache->c_block_hash = kmalloc(bucket_count * sizeof(struct list_head),
-+ GFP_KERNEL);
-+ if (!cache->c_block_hash)
-+ goto fail;
-+ for (n=0; n<bucket_count; n++)
-+ INIT_LIST_HEAD(&cache->c_block_hash[n]);
-+ for (m=0; m<indexes_count; m++) {
-+ cache->c_indexes_hash[m] = kmalloc(bucket_count *
-+ sizeof(struct list_head),
-+ GFP_KERNEL);
-+ if (!cache->c_indexes_hash[m])
-+ goto fail;
-+ for (n=0; n<bucket_count; n++)
-+ INIT_LIST_HEAD(&cache->c_indexes_hash[m][n]);
-+ }
-+ cache->c_entry_cache = kmem_cache_create(name, entry_size, 0,
-+ 0 /*SLAB_POISON | SLAB_RED_ZONE*/, NULL, NULL);
-+ if (!cache->c_entry_cache)
-+ goto fail;
-+
-+ spin_lock(&mb_cache_spinlock);
-+ list_add(&cache->c_cache_list, &mb_cache_list);
-+ spin_unlock(&mb_cache_spinlock);
-+ return cache;
-+
-+fail:
-+ if (cache) {
-+ while (--m >= 0)
-+ kfree(cache->c_indexes_hash[m]);
-+ if (cache->c_block_hash)
-+ kfree(cache->c_block_hash);
-+ kfree(cache);
-+ }
-+ MOD_DEC_USE_COUNT;
-+ return NULL;
-+}
-+
-+
-+/*
-+ * mb_cache_shrink()
-+ *
-+ * Removes all cache entires of a device from the cache. All cache entries
-+ * currently in use cannot be freed, and thus remain in the cache.
-+ *
-+ * @cache: which cache to shrink
-+ * @dev: which device's cache entries to shrink
-+ */
-+void
-+mb_cache_shrink(struct mb_cache *cache, kdev_t dev)
-+{
-+ LIST_HEAD(free_list);
-+ struct list_head *l, *ltmp;
-+
-+ spin_lock(&mb_cache_spinlock);
-+ list_for_each_safe(l, ltmp, &mb_cache_lru_list) {
-+ struct mb_cache_entry *ce =
-+ list_entry(l, struct mb_cache_entry, e_lru_list);
-+ if (ce->e_dev == dev) {
-+ list_del(&ce->e_lru_list);
-+ list_add_tail(&ce->e_lru_list, &free_list);
-+ __mb_cache_entry_unhash(ce);
-+ }
-+ }
-+ spin_unlock(&mb_cache_spinlock);
-+ list_for_each_safe(l, ltmp, &free_list) {
-+ __mb_cache_entry_forget(list_entry(l, struct mb_cache_entry,
-+ e_lru_list), GFP_KERNEL);
-+ }
-+}
-+
-+
-+/*
-+ * mb_cache_destroy()
-+ *
-+ * Shrinks the cache to its minimum possible size (hopefully 0 entries),
-+ * and then destroys it. If this was the last mbcache, un-registers the
-+ * mbcache from kernel memory management.
-+ */
-+void
-+mb_cache_destroy(struct mb_cache *cache)
-+{
-+ LIST_HEAD(free_list);
-+ struct list_head *l, *ltmp;
-+ int n;
-+
-+ spin_lock(&mb_cache_spinlock);
-+ list_for_each_safe(l, ltmp, &mb_cache_lru_list) {
-+ struct mb_cache_entry *ce =
-+ list_entry(l, struct mb_cache_entry, e_lru_list);
-+ if (ce->e_cache == cache) {
-+ list_del(&ce->e_lru_list);
-+ list_add_tail(&ce->e_lru_list, &free_list);
-+ __mb_cache_entry_unhash(ce);
-+ }
-+ }
-+ list_del(&cache->c_cache_list);
-+ spin_unlock(&mb_cache_spinlock);
-+ list_for_each_safe(l, ltmp, &free_list) {
-+ __mb_cache_entry_forget(list_entry(l, struct mb_cache_entry,
-+ e_lru_list), GFP_KERNEL);
-+ }
-+
-+ if (atomic_read(&cache->c_entry_count) > 0) {
-+ mb_error("cache %s: %d orphaned entries",
-+ cache->c_name,
-+ atomic_read(&cache->c_entry_count));
-+ }
-+
-+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0))
-+ /* We don't have kmem_cache_destroy() in 2.2.x */
-+ kmem_cache_shrink(cache->c_entry_cache);
-+#else
-+ kmem_cache_destroy(cache->c_entry_cache);
-+#endif
-+ for (n=0; n < mb_cache_indexes(cache); n++)
-+ kfree(cache->c_indexes_hash[n]);
-+ kfree(cache->c_block_hash);
-+ kfree(cache);
-+
-+ MOD_DEC_USE_COUNT;
-+}
-+
-+
-+/*
-+ * mb_cache_entry_alloc()
-+ *
-+ * Allocates a new cache entry. The new entry will not be valid initially,
-+ * and thus cannot be looked up yet. It should be filled with data, and
-+ * then inserted into the cache using mb_cache_entry_insert(). Returns NULL
-+ * if no more memory was available.
-+ */
-+struct mb_cache_entry *
-+mb_cache_entry_alloc(struct mb_cache *cache)
-+{
-+ struct mb_cache_entry *ce;
-+
-+ atomic_inc(&cache->c_entry_count);
-+ ce = kmem_cache_alloc(cache->c_entry_cache, GFP_KERNEL);
-+ if (ce) {
-+ INIT_LIST_HEAD(&ce->e_lru_list);
-+ INIT_LIST_HEAD(&ce->e_block_list);
-+ ce->e_cache = cache;
-+ atomic_set(&ce->e_used, 1);
-+ }
-+ return ce;
-+}
-+
-+
-+/*
-+ * mb_cache_entry_insert()
-+ *
-+ * Inserts an entry that was allocated using mb_cache_entry_alloc() into
-+ * the cache. After this, the cache entry can be looked up, but is not yet
-+ * in the lru list as the caller still holds a handle to it. Returns 0 on
-+ * success, or -EBUSY if a cache entry for that device + inode exists
-+ * already (this may happen after a failed lookup, if another process has
-+ * inserted the same cache entry in the meantime).
-+ *
-+ * @dev: device the cache entry belongs to
-+ * @block: block number
-+ * @keys: array of additional keys. There must be indexes_count entries
-+ * in the array (as specified when creating the cache).
-+ */
-+int
-+mb_cache_entry_insert(struct mb_cache_entry *ce, kdev_t dev,
-+ unsigned long block, unsigned int keys[])
-+{
-+ struct mb_cache *cache = ce->e_cache;
-+ unsigned int bucket = (HASHDEV(dev) + block) % cache->c_bucket_count;
-+ struct list_head *l;
-+ int error = -EBUSY, n;
-+
-+ spin_lock(&mb_cache_spinlock);
-+ list_for_each(l, &cache->c_block_hash[bucket]) {
-+ struct mb_cache_entry *ce =
-+ list_entry(l, struct mb_cache_entry, e_block_list);
-+ if (ce->e_dev == dev && ce->e_block == block)
-+ goto out;
-+ }
-+ __mb_cache_entry_unhash(ce);
-+ ce->e_dev = dev;
-+ ce->e_block = block;
-+ list_add(&ce->e_block_list, &cache->c_block_hash[bucket]);
-+ for (n=0; n<mb_cache_indexes(cache); n++) {
-+ ce->e_indexes[n].o_key = keys[n];
-+ bucket = keys[n] % cache->c_bucket_count;
-+ list_add(&ce->e_indexes[n].o_list,
-+ &cache->c_indexes_hash[n][bucket]);
-+ }
-+out:
-+ spin_unlock(&mb_cache_spinlock);
-+ return error;
-+}
-+
-+
-+/*
-+ * mb_cache_entry_release()
-+ *
-+ * Release a handle to a cache entry. When the last handle to a cache entry
-+ * is released it is either freed (if it is invalid) or otherwise inserted
-+ * in to the lru list.
-+ */
-+void
-+mb_cache_entry_release(struct mb_cache_entry *ce)
-+{
-+ spin_lock(&mb_cache_spinlock);
-+ __mb_cache_entry_release_unlock(ce);
-+}
-+
-+
-+/*
-+ * mb_cache_entry_takeout()
-+ *
-+ * Take a cache entry out of the cache, making it invalid. The entry can later
-+ * be re-inserted using mb_cache_entry_insert(), or released using
-+ * mb_cache_entry_release().
-+ */
-+void
-+mb_cache_entry_takeout(struct mb_cache_entry *ce)
-+{
-+ spin_lock(&mb_cache_spinlock);
-+ mb_assert(list_empty(&ce->e_lru_list));
-+ __mb_cache_entry_unhash(ce);
-+ spin_unlock(&mb_cache_spinlock);
-+}
-+
-+
-+/*
-+ * mb_cache_entry_free()
-+ *
-+ * This is equivalent to the sequence mb_cache_entry_takeout() --
-+ * mb_cache_entry_release().
-+ */
-+void
-+mb_cache_entry_free(struct mb_cache_entry *ce)
-+{
-+ spin_lock(&mb_cache_spinlock);
-+ mb_assert(list_empty(&ce->e_lru_list));
-+ __mb_cache_entry_unhash(ce);
-+ __mb_cache_entry_release_unlock(ce);
-+}
-+
-+
-+/*
-+ * mb_cache_entry_dup()
-+ *
-+ * Duplicate a handle to a cache entry (does not duplicate the cache entry
-+ * itself). After the call, both the old and the new handle must be released.
-+ */
-+struct mb_cache_entry *
-+mb_cache_entry_dup(struct mb_cache_entry *ce)
-+{
-+ atomic_inc(&ce->e_used);
-+ return ce;
-+}
-+
-+
-+/*
-+ * mb_cache_entry_get()
-+ *
-+ * Get a cache entry by device / block number. (There can only be one entry
-+ * in the cache per device and block.) Returns NULL if no such cache entry
-+ * exists.
-+ */
-+struct mb_cache_entry *
-+mb_cache_entry_get(struct mb_cache *cache, kdev_t dev, unsigned long block)
-+{
-+ unsigned int bucket = (HASHDEV(dev) + block) % cache->c_bucket_count;
-+ struct list_head *l;
-+ struct mb_cache_entry *ce;
-+
-+ spin_lock(&mb_cache_spinlock);
-+ list_for_each(l, &cache->c_block_hash[bucket]) {
-+ ce = list_entry(l, struct mb_cache_entry, e_block_list);
-+ if (ce->e_dev == dev && ce->e_block == block) {
-+ if (!list_empty(&ce->e_lru_list))
-+ list_del_init(&ce->e_lru_list);
-+ atomic_inc(&ce->e_used);
-+ goto cleanup;
-+ }
-+ }
-+ ce = NULL;
-+
-+cleanup:
-+ spin_unlock(&mb_cache_spinlock);
-+ return ce;
-+}
-+
-+#if !defined(MB_CACHE_INDEXES_COUNT) || (MB_CACHE_INDEXES_COUNT > 0)
-+
-+static struct mb_cache_entry *
-+__mb_cache_entry_find(struct list_head *l, struct list_head *head,
-+ int index, kdev_t dev, unsigned int key)
-+{
-+ while (l != head) {
-+ struct mb_cache_entry *ce =
-+ list_entry(l, struct mb_cache_entry,
-+ e_indexes[index].o_list);
-+ if (ce->e_dev == dev && ce->e_indexes[index].o_key == key) {
-+ if (!list_empty(&ce->e_lru_list))
-+ list_del_init(&ce->e_lru_list);
-+ atomic_inc(&ce->e_used);
-+ return ce;
-+ }
-+ l = l->next;
-+ }
-+ return NULL;
-+}
-+
-+
-+/*
-+ * mb_cache_entry_find_first()
-+ *
-+ * Find the first cache entry on a given device with a certain key in
-+ * an additional index. Additonal matches can be found with
-+ * mb_cache_entry_find_next(). Returns NULL if no match was found.
-+ *
-+ * @cache: the cache to search
-+ * @index: the number of the additonal index to search (0<=index<indexes_count)
-+ * @dev: the device the cache entry should belong to
-+ * @key: the key in the index
-+ */
-+struct mb_cache_entry *
-+mb_cache_entry_find_first(struct mb_cache *cache, int index, kdev_t dev,
-+ unsigned int key)
-+{
-+ unsigned int bucket = key % cache->c_bucket_count;
-+ struct list_head *l;
-+ struct mb_cache_entry *ce;
-+
-+ mb_assert(index < mb_cache_indexes(cache));
-+ spin_lock(&mb_cache_spinlock);
-+ l = cache->c_indexes_hash[index][bucket].next;
-+ ce = __mb_cache_entry_find(l, &cache->c_indexes_hash[index][bucket],
-+ index, dev, key);
-+ spin_unlock(&mb_cache_spinlock);
-+ return ce;
-+}
-+
-+
-+/*
-+ * mb_cache_entry_find_next()
-+ *
-+ * Find the next cache entry on a given device with a certain key in an
-+ * additional index. Returns NULL if no match could be found. The previous
-+ * entry is atomatically released, so that mb_cache_entry_find_next() can
-+ * be called like this:
-+ *
-+ * entry = mb_cache_entry_find_first();
-+ * while (entry) {
-+ * ...
-+ * entry = mb_cache_entry_find_next(entry, ...);
-+ * }
-+ *
-+ * @prev: The previous match
-+ * @index: the number of the additonal index to search (0<=index<indexes_count)
-+ * @dev: the device the cache entry should belong to
-+ * @key: the key in the index
-+ */
-+struct mb_cache_entry *
-+mb_cache_entry_find_next(struct mb_cache_entry *prev, int index, kdev_t dev,
-+ unsigned int key)
-+{
-+ struct mb_cache *cache = prev->e_cache;
-+ unsigned int bucket = key % cache->c_bucket_count;
-+ struct list_head *l;
-+ struct mb_cache_entry *ce;
-+
-+ mb_assert(index < mb_cache_indexes(cache));
-+ spin_lock(&mb_cache_spinlock);
-+ l = prev->e_indexes[index].o_list.next;
-+ ce = __mb_cache_entry_find(l, &cache->c_indexes_hash[index][bucket],
-+ index, dev, key);
-+ __mb_cache_entry_release_unlock(prev);
-+ return ce;
-+}
-+
-+#endif /* !defined(MB_CACHE_INDEXES_COUNT) || (MB_CACHE_INDEXES_COUNT > 0) */
-+
-+static int __init init_mbcache(void)
-+{
-+ register_cache(&mb_cache_definition);
-+ return 0;
-+}
-+
-+static void __exit exit_mbcache(void)
-+{
-+ unregister_cache(&mb_cache_definition);
-+}
-+
-+module_init(init_mbcache)
-+module_exit(exit_mbcache)
-+
---- linux-2.4.20/include/asm-arm/unistd.h~linux-2.4.20-xattr-0.8.54 2002-08-03 08:39:45.000000000 +0800
-+++ linux-2.4.20-root/include/asm-arm/unistd.h 2003-05-07 18:08:03.000000000 +0800
-@@ -244,7 +244,6 @@
- #define __NR_security (__NR_SYSCALL_BASE+223)
- #define __NR_gettid (__NR_SYSCALL_BASE+224)
- #define __NR_readahead (__NR_SYSCALL_BASE+225)
--#if 0 /* allocated in 2.5 */
- #define __NR_setxattr (__NR_SYSCALL_BASE+226)
- #define __NR_lsetxattr (__NR_SYSCALL_BASE+227)
- #define __NR_fsetxattr (__NR_SYSCALL_BASE+228)
-@@ -257,7 +256,6 @@
- #define __NR_removexattr (__NR_SYSCALL_BASE+235)
- #define __NR_lremovexattr (__NR_SYSCALL_BASE+236)
- #define __NR_fremovexattr (__NR_SYSCALL_BASE+237)
--#endif
- #define __NR_tkill (__NR_SYSCALL_BASE+238)
- /*
- * Please check 2.5 _before_ adding calls here,
---- linux-2.4.20/include/asm-ppc64/unistd.h~linux-2.4.20-xattr-0.8.54 2002-08-03 08:39:45.000000000 +0800
-+++ linux-2.4.20-root/include/asm-ppc64/unistd.h 2003-05-07 18:08:03.000000000 +0800
-@@ -218,6 +218,7 @@
- #define __NR_gettid 207
- #if 0 /* Reserved syscalls */
- #define __NR_tkill 208
-+#endif
- #define __NR_setxattr 209
- #define __NR_lsetxattr 210
- #define __NR_fsetxattr 211
-@@ -230,6 +231,7 @@
- #define __NR_removexattr 218
- #define __NR_lremovexattr 219
- #define __NR_fremovexattr 220
-+#if 0 /* Reserved syscalls */
- #define __NR_futex 221
- #endif
-
---- linux-2.4.20/include/asm-s390/unistd.h~linux-2.4.20-xattr-0.8.54 2002-08-03 08:39:45.000000000 +0800
-+++ linux-2.4.20-root/include/asm-s390/unistd.h 2003-05-07 18:08:03.000000000 +0800
-@@ -212,9 +212,18 @@
- #define __NR_getdents64 220
- #define __NR_fcntl64 221
- #define __NR_readahead 222
--/*
-- * Numbers 224-235 are reserved for posix acl
-- */
-+#define __NR_setxattr 224
-+#define __NR_lsetxattr 225
-+#define __NR_fsetxattr 226
-+#define __NR_getxattr 227
-+#define __NR_lgetxattr 228
-+#define __NR_fgetxattr 229
-+#define __NR_listxattr 230
-+#define __NR_llistxattr 231
-+#define __NR_flistxattr 232
-+#define __NR_removexattr 233
-+#define __NR_lremovexattr 234
-+#define __NR_fremovexattr 235
- #define __NR_gettid 236
- #define __NR_tkill 237
-
---- linux-2.4.20/include/asm-s390x/unistd.h~linux-2.4.20-xattr-0.8.54 2002-08-03 08:39:45.000000000 +0800
-+++ linux-2.4.20-root/include/asm-s390x/unistd.h 2003-05-07 18:08:03.000000000 +0800
-@@ -180,9 +180,18 @@
- #define __NR_mincore 218
- #define __NR_madvise 219
- #define __NR_readahead 222
--/*
-- * Numbers 224-235 are reserved for posix acl
-- */
-+#define __NR_setxattr 224
-+#define __NR_lsetxattr 225
-+#define __NR_fsetxattr 226
-+#define __NR_getxattr 227
-+#define __NR_lgetxattr 228
-+#define __NR_fgetxattr 229
-+#define __NR_listxattr 230
-+#define __NR_llistxattr 231
-+#define __NR_flistxattr 232
-+#define __NR_removexattr 233
-+#define __NR_lremovexattr 234
-+#define __NR_fremovexattr 235
- #define __NR_gettid 236
- #define __NR_tkill 237
-
---- /dev/null 2003-01-30 18:24:37.000000000 +0800
-+++ linux-2.4.20-root/include/linux/cache_def.h 2003-05-07 18:08:03.000000000 +0800
-@@ -0,0 +1,15 @@
-+/*
-+ * linux/cache_def.h
-+ * Handling of caches defined in drivers, filesystems, ...
-+ *
-+ * Copyright (C) 2002 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
-+ */
-+
-+struct cache_definition {
-+ const char *name;
-+ void (*shrink)(int, unsigned int);
-+ struct list_head link;
-+};
-+
-+extern void register_cache(struct cache_definition *);
-+extern void unregister_cache(struct cache_definition *);
---- linux-2.4.20/include/linux/errno.h~linux-2.4.20-xattr-0.8.54 2003-04-14 16:39:03.000000000 +0800
-+++ linux-2.4.20-root/include/linux/errno.h 2003-05-07 18:08:03.000000000 +0800
-@@ -23,4 +23,8 @@
-
- #endif
-
-+/* Defined for extended attributes */
-+#define ENOATTR ENODATA /* No such attribute */
-+#define ENOTSUP EOPNOTSUPP /* Operation not supported */
-+
- #endif
---- linux-2.4.20/include/linux/ext2_fs.h~linux-2.4.20-xattr-0.8.54 2003-04-14 16:39:08.000000000 +0800
-+++ linux-2.4.20-root/include/linux/ext2_fs.h 2003-05-07 18:08:03.000000000 +0800
-@@ -57,8 +57,6 @@
- */
- #define EXT2_BAD_INO 1 /* Bad blocks inode */
- #define EXT2_ROOT_INO 2 /* Root inode */
--#define EXT2_ACL_IDX_INO 3 /* ACL inode */
--#define EXT2_ACL_DATA_INO 4 /* ACL inode */
- #define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */
- #define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */
-
-@@ -86,7 +84,6 @@
- #else
- # define EXT2_BLOCK_SIZE(s) (EXT2_MIN_BLOCK_SIZE << (s)->s_log_block_size)
- #endif
--#define EXT2_ACLE_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (struct ext2_acl_entry))
- #define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32))
- #ifdef __KERNEL__
- # define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
-@@ -121,28 +118,6 @@
- #endif
-
- /*
-- * ACL structures
-- */
--struct ext2_acl_header /* Header of Access Control Lists */
--{
-- __u32 aclh_size;
-- __u32 aclh_file_count;
-- __u32 aclh_acle_count;
-- __u32 aclh_first_acle;
--};
--
--struct ext2_acl_entry /* Access Control List Entry */
--{
-- __u32 acle_size;
-- __u16 acle_perms; /* Access permissions */
-- __u16 acle_type; /* Type of entry */
-- __u16 acle_tag; /* User or group identity */
-- __u16 acle_pad1;
-- __u32 acle_next; /* Pointer on next entry for the */
-- /* same inode or on next free entry */
--};
--
--/*
- * Structure of a blocks group descriptor
- */
- struct ext2_group_desc
-@@ -314,6 +289,7 @@ struct ext2_inode {
- #define EXT2_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */
- #define EXT2_MOUNT_MINIX_DF 0x0080 /* Mimics the Minix statfs */
- #define EXT2_MOUNT_NO_UID32 0x0200 /* Disable 32-bit UIDs */
-+#define EXT2_MOUNT_XATTR_USER 0x4000 /* Extended user attributes */
-
- #define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt
- #define set_opt(o, opt) o |= EXT2_MOUNT_##opt
-@@ -397,6 +373,7 @@ struct ext2_super_block {
-
- #ifdef __KERNEL__
- #define EXT2_SB(sb) (&((sb)->u.ext2_sb))
-+#define EXT2_I(inode) (&((inode)->u.ext2_i))
- #else
- /* Assume that user mode programs are passing in an ext2fs superblock, not
- * a kernel struct super_block. This will allow us to call the feature-test
-@@ -466,7 +443,7 @@ struct ext2_super_block {
- #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
- #define EXT2_FEATURE_INCOMPAT_ANY 0xffffffff
-
--#define EXT2_FEATURE_COMPAT_SUPP 0
-+#define EXT2_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR
- #define EXT2_FEATURE_INCOMPAT_SUPP EXT2_FEATURE_INCOMPAT_FILETYPE
- #define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
- EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
-@@ -623,8 +600,10 @@ extern struct address_space_operations e
-
- /* namei.c */
- extern struct inode_operations ext2_dir_inode_operations;
-+extern struct inode_operations ext2_special_inode_operations;
-
- /* symlink.c */
-+extern struct inode_operations ext2_symlink_inode_operations;
- extern struct inode_operations ext2_fast_symlink_inode_operations;
-
- #endif /* __KERNEL__ */
---- /dev/null 2003-01-30 18:24:37.000000000 +0800
-+++ linux-2.4.20-root/include/linux/ext2_xattr.h 2003-05-07 18:08:03.000000000 +0800
-@@ -0,0 +1,157 @@
-+/*
-+ File: linux/ext2_xattr.h
-+
-+ On-disk format of extended attributes for the ext2 filesystem.
-+
-+ (C) 2001 Andreas Gruenbacher, <a.gruenbacher@computer.org>
-+*/
-+
-+#include <linux/config.h>
-+#include <linux/init.h>
-+#include <linux/xattr.h>
-+
-+/* Magic value in attribute blocks */
-+#define EXT2_XATTR_MAGIC 0xEA020000
-+
-+/* Maximum number of references to one attribute block */
-+#define EXT2_XATTR_REFCOUNT_MAX 1024
-+
-+/* Name indexes */
-+#define EXT2_XATTR_INDEX_MAX 10
-+#define EXT2_XATTR_INDEX_USER 1
-+#define EXT2_XATTR_INDEX_POSIX_ACL_ACCESS 2
-+#define EXT2_XATTR_INDEX_POSIX_ACL_DEFAULT 3
-+
-+struct ext2_xattr_header {
-+ __u32 h_magic; /* magic number for identification */
-+ __u32 h_refcount; /* reference count */
-+ __u32 h_blocks; /* number of disk blocks used */
-+ __u32 h_hash; /* hash value of all attributes */
-+ __u32 h_reserved[4]; /* zero right now */
-+};
-+
-+struct ext2_xattr_entry {
-+ __u8 e_name_len; /* length of name */
-+ __u8 e_name_index; /* attribute name index */
-+ __u16 e_value_offs; /* offset in disk block of value */
-+ __u32 e_value_block; /* disk block attribute is stored on (n/i) */
-+ __u32 e_value_size; /* size of attribute value */
-+ __u32 e_hash; /* hash value of name and value */
-+ char e_name[0]; /* attribute name */
-+};
-+
-+#define EXT2_XATTR_PAD_BITS 2
-+#define EXT2_XATTR_PAD (1<<EXT2_XATTR_PAD_BITS)
-+#define EXT2_XATTR_ROUND (EXT2_XATTR_PAD-1)
-+#define EXT2_XATTR_LEN(name_len) \
-+ (((name_len) + EXT2_XATTR_ROUND + \
-+ sizeof(struct ext2_xattr_entry)) & ~EXT2_XATTR_ROUND)
-+#define EXT2_XATTR_NEXT(entry) \
-+ ( (struct ext2_xattr_entry *)( \
-+ (char *)(entry) + EXT2_XATTR_LEN((entry)->e_name_len)) )
-+#define EXT2_XATTR_SIZE(size) \
-+ (((size) + EXT2_XATTR_ROUND) & ~EXT2_XATTR_ROUND)
-+
-+#ifdef __KERNEL__
-+
-+# ifdef CONFIG_EXT2_FS_XATTR
-+
-+struct ext2_xattr_handler {
-+ char *prefix;
-+ size_t (*list)(char *list, struct inode *inode, const char *name,
-+ int name_len);
-+ int (*get)(struct inode *inode, const char *name, void *buffer,
-+ size_t size);
-+ int (*set)(struct inode *inode, const char *name, const void *buffer,
-+ size_t size, int flags);
-+};
-+
-+extern int ext2_xattr_register(int, struct ext2_xattr_handler *);
-+extern void ext2_xattr_unregister(int, struct ext2_xattr_handler *);
-+
-+extern int ext2_setxattr(struct dentry *, const char *, const void *, size_t, int);
-+extern ssize_t ext2_getxattr(struct dentry *, const char *, void *, size_t);
-+extern ssize_t ext2_listxattr(struct dentry *, char *, size_t);
-+extern int ext2_removexattr(struct dentry *, const char *);
-+
-+extern int ext2_xattr_get(struct inode *, int, const char *, void *, size_t);
-+extern int ext2_xattr_list(struct inode *, char *, size_t);
-+extern int ext2_xattr_set(struct inode *, int, const char *, const void *, size_t, int);
-+
-+extern void ext2_xattr_delete_inode(struct inode *);
-+extern void ext2_xattr_put_super(struct super_block *);
-+
-+extern int init_ext2_xattr(void) __init;
-+extern void exit_ext2_xattr(void);
-+
-+# else /* CONFIG_EXT2_FS_XATTR */
-+# define ext2_setxattr NULL
-+# define ext2_getxattr NULL
-+# define ext2_listxattr NULL
-+# define ext2_removexattr NULL
-+
-+static inline int
-+ext2_xattr_get(struct inode *inode, int name_index,
-+ const char *name, void *buffer, size_t size)
-+{
-+ return -ENOTSUP;
-+}
-+
-+static inline int
-+ext2_xattr_list(struct inode *inode, char *buffer, size_t size)
-+{
-+ return -ENOTSUP;
-+}
-+
-+static inline int
-+ext2_xattr_set(struct inode *inode, int name_index, const char *name,
-+ const void *value, size_t size, int flags)
-+{
-+ return -ENOTSUP;
-+}
-+
-+static inline void
-+ext2_xattr_delete_inode(struct inode *inode)
-+{
-+}
-+
-+static inline void
-+ext2_xattr_put_super(struct super_block *sb)
-+{
-+}
-+
-+static inline int
-+init_ext2_xattr(void)
-+{
-+ return 0;
-+}
-+
-+static inline void
-+exit_ext2_xattr(void)
-+{
-+}
-+
-+# endif /* CONFIG_EXT2_FS_XATTR */
-+
-+# ifdef CONFIG_EXT2_FS_XATTR_USER
-+
-+extern int init_ext2_xattr_user(void) __init;
-+extern void exit_ext2_xattr_user(void);
-+
-+# else /* CONFIG_EXT2_FS_XATTR_USER */
-+
-+static inline int
-+init_ext2_xattr_user(void)
-+{
-+ return 0;
-+}
-+
-+static inline void
-+exit_ext2_xattr_user(void)
-+{
-+}
-+
-+# endif /* CONFIG_EXT2_FS_XATTR_USER */
-+
-+#endif /* __KERNEL__ */
-+
---- linux-2.4.20/include/linux/ext3_fs.h~linux-2.4.20-xattr-0.8.54 2003-05-05 19:01:04.000000000 +0800
-+++ linux-2.4.20-root/include/linux/ext3_fs.h 2003-05-07 18:08:03.000000000 +0800
-@@ -63,8 +63,6 @@
- */
- #define EXT3_BAD_INO 1 /* Bad blocks inode */
- #define EXT3_ROOT_INO 2 /* Root inode */
--#define EXT3_ACL_IDX_INO 3 /* ACL inode */
--#define EXT3_ACL_DATA_INO 4 /* ACL inode */
- #define EXT3_BOOT_LOADER_INO 5 /* Boot loader inode */
- #define EXT3_UNDEL_DIR_INO 6 /* Undelete directory inode */
- #define EXT3_RESIZE_INO 7 /* Reserved group descriptors inode */
-@@ -94,7 +92,6 @@
- #else
- # define EXT3_BLOCK_SIZE(s) (EXT3_MIN_BLOCK_SIZE << (s)->s_log_block_size)
- #endif
--#define EXT3_ACLE_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (struct ext3_acl_entry))
- #define EXT3_ADDR_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (__u32))
- #ifdef __KERNEL__
- # define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
-@@ -129,28 +126,6 @@
- #endif
-
- /*
-- * ACL structures
-- */
--struct ext3_acl_header /* Header of Access Control Lists */
--{
-- __u32 aclh_size;
-- __u32 aclh_file_count;
-- __u32 aclh_acle_count;
-- __u32 aclh_first_acle;
--};
--
--struct ext3_acl_entry /* Access Control List Entry */
--{
-- __u32 acle_size;
-- __u16 acle_perms; /* Access permissions */
-- __u16 acle_type; /* Type of entry */
-- __u16 acle_tag; /* User or group identity */
-- __u16 acle_pad1;
-- __u32 acle_next; /* Pointer on next entry for the */
-- /* same inode or on next free entry */
--};
--
--/*
- * Structure of a blocks group descriptor
- */
- struct ext3_group_desc
-@@ -344,6 +319,7 @@ struct ext3_inode {
- #define EXT3_MOUNT_WRITEBACK_DATA 0x0C00 /* No data ordering */
- #define EXT3_MOUNT_UPDATE_JOURNAL 0x1000 /* Update the journal format */
- #define EXT3_MOUNT_NO_UID32 0x2000 /* Disable 32-bit UIDs */
-+#define EXT3_MOUNT_XATTR_USER 0x4000 /* Extended user attributes */
-
- /* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */
- #ifndef _LINUX_EXT2_FS_H
-@@ -520,7 +496,7 @@ struct ext3_super_block {
- #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
- #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */
-
--#define EXT3_FEATURE_COMPAT_SUPP 0
-+#define EXT3_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR
- #define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE| \
- EXT3_FEATURE_INCOMPAT_RECOVER)
- #define EXT3_FEATURE_RO_COMPAT_SUPP (EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER| \
-@@ -703,6 +679,7 @@ extern void ext3_check_inodes_bitmap (st
- extern unsigned long ext3_count_free (struct buffer_head *, unsigned);
-
- /* inode.c */
-+extern int ext3_forget(handle_t *, int, struct inode *, struct buffer_head *, int);
- extern struct buffer_head * ext3_getblk (handle_t *, struct inode *, long, int, int *);
- extern struct buffer_head * ext3_bread (handle_t *, struct inode *, int, int, int *);
-
-@@ -771,8 +748,10 @@ extern struct address_space_operations e
-
- /* namei.c */
- extern struct inode_operations ext3_dir_inode_operations;
-+extern struct inode_operations ext3_special_inode_operations;
-
- /* symlink.c */
-+extern struct inode_operations ext3_symlink_inode_operations;
- extern struct inode_operations ext3_fast_symlink_inode_operations;
-
-
---- linux-2.4.20/include/linux/ext3_jbd.h~linux-2.4.20-xattr-0.8.54 2003-05-05 19:01:02.000000000 +0800
-+++ linux-2.4.20-root/include/linux/ext3_jbd.h 2003-05-07 18:08:03.000000000 +0800
-@@ -30,13 +30,19 @@
-
- #define EXT3_SINGLEDATA_TRANS_BLOCKS 8
-
-+/* Extended attributes may touch two data buffers, two bitmap buffers,
-+ * and two group and summaries. */
-+
-+#define EXT3_XATTR_TRANS_BLOCKS 8
-+
- /* Define the minimum size for a transaction which modifies data. This
- * needs to take into account the fact that we may end up modifying two
- * quota files too (one for the group, one for the user quota). The
- * superblock only gets updated once, of course, so don't bother
- * counting that again for the quota updates. */
-
--#define EXT3_DATA_TRANS_BLOCKS (3 * EXT3_SINGLEDATA_TRANS_BLOCKS - 2)
-+#define EXT3_DATA_TRANS_BLOCKS (3 * EXT3_SINGLEDATA_TRANS_BLOCKS + \
-+ EXT3_XATTR_TRANS_BLOCKS - 2)
-
- extern int ext3_writepage_trans_blocks(struct inode *inode);
-
---- /dev/null 2003-01-30 18:24:37.000000000 +0800
-+++ linux-2.4.20-root/include/linux/ext3_xattr.h 2003-05-07 18:08:03.000000000 +0800
-@@ -0,0 +1,157 @@
-+/*
-+ File: linux/ext3_xattr.h
-+
-+ On-disk format of extended attributes for the ext3 filesystem.
-+
-+ (C) 2001 Andreas Gruenbacher, <a.gruenbacher@computer.org>
-+*/
-+
-+#include <linux/config.h>
-+#include <linux/init.h>
-+#include <linux/xattr.h>
-+
-+/* Magic value in attribute blocks */
-+#define EXT3_XATTR_MAGIC 0xEA020000
-+
-+/* Maximum number of references to one attribute block */
-+#define EXT3_XATTR_REFCOUNT_MAX 1024
-+
-+/* Name indexes */
-+#define EXT3_XATTR_INDEX_MAX 10
-+#define EXT3_XATTR_INDEX_USER 1
-+#define EXT3_XATTR_INDEX_POSIX_ACL_ACCESS 2
-+#define EXT3_XATTR_INDEX_POSIX_ACL_DEFAULT 3
-+
-+struct ext3_xattr_header {
-+ __u32 h_magic; /* magic number for identification */
-+ __u32 h_refcount; /* reference count */
-+ __u32 h_blocks; /* number of disk blocks used */
-+ __u32 h_hash; /* hash value of all attributes */
-+ __u32 h_reserved[4]; /* zero right now */
-+};
-+
-+struct ext3_xattr_entry {
-+ __u8 e_name_len; /* length of name */
-+ __u8 e_name_index; /* attribute name index */
-+ __u16 e_value_offs; /* offset in disk block of value */
-+ __u32 e_value_block; /* disk block attribute is stored on (n/i) */
-+ __u32 e_value_size; /* size of attribute value */
-+ __u32 e_hash; /* hash value of name and value */
-+ char e_name[0]; /* attribute name */
-+};
-+
-+#define EXT3_XATTR_PAD_BITS 2
-+#define EXT3_XATTR_PAD (1<<EXT3_XATTR_PAD_BITS)
-+#define EXT3_XATTR_ROUND (EXT3_XATTR_PAD-1)
-+#define EXT3_XATTR_LEN(name_len) \
-+ (((name_len) + EXT3_XATTR_ROUND + \
-+ sizeof(struct ext3_xattr_entry)) & ~EXT3_XATTR_ROUND)
-+#define EXT3_XATTR_NEXT(entry) \
-+ ( (struct ext3_xattr_entry *)( \
-+ (char *)(entry) + EXT3_XATTR_LEN((entry)->e_name_len)) )
-+#define EXT3_XATTR_SIZE(size) \
-+ (((size) + EXT3_XATTR_ROUND) & ~EXT3_XATTR_ROUND)
-+
-+#ifdef __KERNEL__
-+
-+# ifdef CONFIG_EXT3_FS_XATTR
-+
-+struct ext3_xattr_handler {
-+ char *prefix;
-+ size_t (*list)(char *list, struct inode *inode, const char *name,
-+ int name_len);
-+ int (*get)(struct inode *inode, const char *name, void *buffer,
-+ size_t size);
-+ int (*set)(struct inode *inode, const char *name, const void *buffer,
-+ size_t size, int flags);
-+};
-+
-+extern int ext3_xattr_register(int, struct ext3_xattr_handler *);
-+extern void ext3_xattr_unregister(int, struct ext3_xattr_handler *);
-+
-+extern int ext3_setxattr(struct dentry *, const char *, const void *, size_t, int);
-+extern ssize_t ext3_getxattr(struct dentry *, const char *, void *, size_t);
-+extern ssize_t ext3_listxattr(struct dentry *, char *, size_t);
-+extern int ext3_removexattr(struct dentry *, const char *);
-+
-+extern int ext3_xattr_get(struct inode *, int, const char *, void *, size_t);
-+extern int ext3_xattr_list(struct inode *, char *, size_t);
-+extern int ext3_xattr_set(handle_t *handle, struct inode *, int, const char *, const void *, size_t, int);
-+
-+extern void ext3_xattr_delete_inode(handle_t *, struct inode *);
-+extern void ext3_xattr_put_super(struct super_block *);
-+
-+extern int init_ext3_xattr(void) __init;
-+extern void exit_ext3_xattr(void);
-+
-+# else /* CONFIG_EXT3_FS_XATTR */
-+# define ext3_setxattr NULL
-+# define ext3_getxattr NULL
-+# define ext3_listxattr NULL
-+# define ext3_removexattr NULL
-+
-+static inline int
-+ext3_xattr_get(struct inode *inode, int name_index, const char *name,
-+ void *buffer, size_t size)
-+{
-+ return -ENOTSUP;
-+}
-+
-+static inline int
-+ext3_xattr_list(struct inode *inode, void *buffer, size_t size)
-+{
-+ return -ENOTSUP;
-+}
-+
-+static inline int
-+ext3_xattr_set(handle_t *handle, struct inode *inode, int name_index,
-+ const char *name, const void *value, size_t size, int flags)
-+{
-+ return -ENOTSUP;
-+}
-+
-+static inline void
-+ext3_xattr_delete_inode(handle_t *handle, struct inode *inode)
-+{
-+}
-+
-+static inline void
-+ext3_xattr_put_super(struct super_block *sb)
-+{
-+}
-+
-+static inline int
-+init_ext3_xattr(void)
-+{
-+ return 0;
-+}
-+
-+static inline void
-+exit_ext3_xattr(void)
-+{
-+}
-+
-+# endif /* CONFIG_EXT3_FS_XATTR */
-+
-+# ifdef CONFIG_EXT3_FS_XATTR_USER
-+
-+extern int init_ext3_xattr_user(void) __init;
-+extern void exit_ext3_xattr_user(void);
-+
-+# else /* CONFIG_EXT3_FS_XATTR_USER */
-+
-+static inline int
-+init_ext3_xattr_user(void)
-+{
-+ return 0;
-+}
-+
-+static inline void
-+exit_ext3_xattr_user(void)
-+{
-+}
-+
-+#endif /* CONFIG_EXT3_FS_XATTR_USER */
-+
-+#endif /* __KERNEL__ */
-+
---- linux-2.4.20/include/linux/fs.h~linux-2.4.20-xattr-0.8.54 2003-05-05 19:00:55.000000000 +0800
-+++ linux-2.4.20-root/include/linux/fs.h 2003-05-07 18:08:03.000000000 +0800
-@@ -888,7 +888,7 @@ struct inode_operations {
- int (*setattr) (struct dentry *, struct iattr *);
- int (*setattr_raw) (struct inode *, struct iattr *);
- int (*getattr) (struct dentry *, struct iattr *);
-- int (*setxattr) (struct dentry *, const char *, void *, size_t, int);
-+ int (*setxattr) (struct dentry *, const char *, const void *, size_t, int);
- ssize_t (*getxattr) (struct dentry *, const char *, void *, size_t);
- ssize_t (*listxattr) (struct dentry *, char *, size_t);
- int (*removexattr) (struct dentry *, const char *);
---- /dev/null 2003-01-30 18:24:37.000000000 +0800
-+++ linux-2.4.20-root/include/linux/mbcache.h 2003-05-07 18:08:03.000000000 +0800
-@@ -0,0 +1,69 @@
-+/*
-+ File: linux/mbcache.h
-+
-+ (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
-+*/
-+
-+/* Hardwire the number of additional indexes */
-+#define MB_CACHE_INDEXES_COUNT 1
-+
-+struct mb_cache_entry;
-+
-+struct mb_cache_op {
-+ int (*free)(struct mb_cache_entry *, int);
-+};
-+
-+struct mb_cache {
-+ struct list_head c_cache_list;
-+ const char *c_name;
-+ struct mb_cache_op c_op;
-+ atomic_t c_entry_count;
-+ int c_bucket_count;
-+#ifndef MB_CACHE_INDEXES_COUNT
-+ int c_indexes_count;
-+#endif
-+ kmem_cache_t *c_entry_cache;
-+ struct list_head *c_block_hash;
-+ struct list_head *c_indexes_hash[0];
-+};
-+
-+struct mb_cache_entry_index {
-+ struct list_head o_list;
-+ unsigned int o_key;
-+};
-+
-+struct mb_cache_entry {
-+ struct list_head e_lru_list;
-+ struct mb_cache *e_cache;
-+ atomic_t e_used;
-+ kdev_t e_dev;
-+ unsigned long e_block;
-+ struct list_head e_block_list;
-+ struct mb_cache_entry_index e_indexes[0];
-+};
-+
-+/* Functions on caches */
-+
-+struct mb_cache * mb_cache_create(const char *, struct mb_cache_op *, size_t,
-+ int, int);
-+void mb_cache_shrink(struct mb_cache *, kdev_t);
-+void mb_cache_destroy(struct mb_cache *);
-+
-+/* Functions on cache entries */
-+
-+struct mb_cache_entry *mb_cache_entry_alloc(struct mb_cache *);
-+int mb_cache_entry_insert(struct mb_cache_entry *, kdev_t, unsigned long,
-+ unsigned int[]);
-+void mb_cache_entry_rehash(struct mb_cache_entry *, unsigned int[]);
-+void mb_cache_entry_release(struct mb_cache_entry *);
-+void mb_cache_entry_takeout(struct mb_cache_entry *);
-+void mb_cache_entry_free(struct mb_cache_entry *);
-+struct mb_cache_entry *mb_cache_entry_dup(struct mb_cache_entry *);
-+struct mb_cache_entry *mb_cache_entry_get(struct mb_cache *, kdev_t,
-+ unsigned long);
-+#if !defined(MB_CACHE_INDEXES_COUNT) || (MB_CACHE_INDEXES_COUNT > 0)
-+struct mb_cache_entry *mb_cache_entry_find_first(struct mb_cache *cache, int,
-+ kdev_t, unsigned int);
-+struct mb_cache_entry *mb_cache_entry_find_next(struct mb_cache_entry *, int,
-+ kdev_t, unsigned int);
-+#endif
---- linux-2.4.20/kernel/ksyms.c~linux-2.4.20-xattr-0.8.54 2003-05-05 17:43:15.000000000 +0800
-+++ linux-2.4.20-root/kernel/ksyms.c 2003-05-07 18:08:03.000000000 +0800
-@@ -11,6 +11,7 @@
-
- #include <linux/config.h>
- #include <linux/slab.h>
-+#include <linux/cache_def.h>
- #include <linux/module.h>
- #include <linux/blkdev.h>
- #include <linux/cdrom.h>
-@@ -89,6 +90,7 @@ EXPORT_SYMBOL(exit_mm);
- EXPORT_SYMBOL(exit_files);
- EXPORT_SYMBOL(exit_fs);
- EXPORT_SYMBOL(exit_sighand);
-+EXPORT_SYMBOL(copy_fs_struct);
-
- /* internal kernel memory management */
- EXPORT_SYMBOL(_alloc_pages);
-@@ -107,6 +109,8 @@ EXPORT_SYMBOL(kmem_cache_validate);
- EXPORT_SYMBOL(kmem_cache_alloc);
- EXPORT_SYMBOL(kmem_cache_free);
- EXPORT_SYMBOL(kmem_cache_size);
-+EXPORT_SYMBOL(register_cache);
-+EXPORT_SYMBOL(unregister_cache);
- EXPORT_SYMBOL(kmalloc);
- EXPORT_SYMBOL(kfree);
- EXPORT_SYMBOL(vfree);
---- linux-2.4.20/mm/vmscan.c~linux-2.4.20-xattr-0.8.54 2002-11-29 07:53:15.000000000 +0800
-+++ linux-2.4.20-root/mm/vmscan.c 2003-05-07 18:08:03.000000000 +0800
-@@ -18,6 +18,7 @@
- #include <linux/kernel_stat.h>
- #include <linux/swap.h>
- #include <linux/swapctl.h>
-+#include <linux/cache_def.h>
- #include <linux/smp_lock.h>
- #include <linux/pagemap.h>
- #include <linux/init.h>
-@@ -34,6 +35,39 @@
- */
- #define DEF_PRIORITY (6)
-
-+static DECLARE_MUTEX(other_caches_sem);
-+static LIST_HEAD(cache_definitions);
-+
-+void register_cache(struct cache_definition *cache)
-+{
-+ down(&other_caches_sem);
-+ list_add(&cache->link, &cache_definitions);
-+ up(&other_caches_sem);
-+}
-+
-+void unregister_cache(struct cache_definition *cache)
-+{
-+ down(&other_caches_sem);
-+ list_del(&cache->link);
-+ up(&other_caches_sem);
-+}
-+
-+static void shrink_other_caches(unsigned int priority, int gfp_mask)
-+{
-+ struct list_head *p;
-+
-+ if (down_trylock(&other_caches_sem))
-+ return;
-+
-+ list_for_each_prev(p, &cache_definitions) {
-+ struct cache_definition *cache =
-+ list_entry(p, struct cache_definition, link);
-+
-+ cache->shrink(priority, gfp_mask);
-+ }
-+ up(&other_caches_sem);
-+}
-+
- /*
- * The swap-out function returns 1 if it successfully
- * scanned all the pages it was asked to (`count').
-@@ -577,6 +611,7 @@ static int shrink_caches(zone_t * classz
-
- shrink_dcache_memory(priority, gfp_mask);
- shrink_icache_memory(priority, gfp_mask);
-+ shrink_other_caches(priority, gfp_mask);
- #ifdef CONFIG_QUOTA
- shrink_dqcache_memory(DEF_PRIORITY, gfp_mask);
- #endif
---- /dev/null 2003-01-30 18:24:37.000000000 +0800
-+++ linux-root/fs/ext3/ext3-exports.c 2003-05-05 18:19:11.000000000 +0800
-@@ -0,0 +1,13 @@
-+#include <linux/config.h>
-+#include <linux/module.h>
-+#include <linux/ext3_fs.h>
-+#include <linux/ext3_jbd.h>
-+#include <linux/ext3_xattr.h>
-+
-+EXPORT_SYMBOL(ext3_force_commit);
-+EXPORT_SYMBOL(ext3_bread);
-+EXPORT_SYMBOL(ext3_xattr_register);
-+EXPORT_SYMBOL(ext3_xattr_unregister);
-+EXPORT_SYMBOL(ext3_xattr_get);
-+EXPORT_SYMBOL(ext3_xattr_list);
-+EXPORT_SYMBOL(ext3_xattr_set);
-
-_
git://git.whamcloud.com / fs / lustre-release.git / commitdiff