--- /dev/null
+ fs/ext3/ialloc.c | 35 ++++++++++++++++++++++++++++++++++-
+ fs/ext3/ioctl.c | 25 +++++++++++++++++++++++++
+ fs/ext3/namei.c | 21 +++++++++++++++++----
+ include/linux/dcache.h | 5 +++++
+ include/linux/ext3_fs.h | 5 ++++-
+ 5 files changed, 85 insertions(+), 6 deletions(-)
+
+Index: linux-2.6.10/fs/ext3/ialloc.c
+===================================================================
+--- linux-2.6.10.orig/fs/ext3/ialloc.c 2005-03-31 18:19:50.911148112 +0800
++++ linux-2.6.10/fs/ext3/ialloc.c 2005-03-31 18:39:48.578075064 +0800
+@@ -419,7 +419,8 @@
+ * For other inodes, search forward from the parent directory's block
+ * group to find a free inode.
+ */
+-struct inode *ext3_new_inode(handle_t *handle, struct inode * dir, int mode)
++struct inode *ext3_new_inode(handle_t *handle, struct inode * dir, int mode,
++ unsigned long goal)
+ {
+ struct super_block *sb;
+ struct buffer_head *bitmap_bh = NULL;
+@@ -447,6 +448,38 @@
+
+ sbi = EXT3_SB(sb);
+ es = sbi->s_es;
++ if (goal) {
++ group = (goal - 1) / EXT3_INODES_PER_GROUP(sb);
++ ino = (goal - 1) % EXT3_INODES_PER_GROUP(sb);
++ gdp = ext3_get_group_desc(sb, group, &bh2);
++
++ err = -EIO;
++ bitmap_bh = read_inode_bitmap (sb, group);
++ if (!bitmap_bh)
++ goto fail;
++
++ BUFFER_TRACE(bh, "get_write_access");
++ err = ext3_journal_get_write_access(handle, bitmap_bh);
++ if (err) goto fail;
++
++ if (ext3_set_bit_atomic(sb_bgl_lock(sbi, group),
++ ino, bitmap_bh->b_data)) {
++ printk(KERN_ERR "goal inode %lu unavailable\n", goal);
++ /* Oh well, we tried. */
++ goto continue_allocation;
++ }
++
++ BUFFER_TRACE(bh, "call ext3_journal_dirty_metadata");
++ err = ext3_journal_dirty_metadata(handle, bitmap_bh);
++ if (err) goto fail;
++
++ /* We've shortcircuited the allocation system successfully,
++ * now finish filling in the inode.
++ */
++ goto got;
++ }
++
++continue_allocation:
+ if (S_ISDIR(mode)) {
+ if (test_opt (sb, OLDALLOC))
+ group = find_group_dir(sb, dir);
+Index: linux-2.6.10/fs/ext3/ioctl.c
+===================================================================
+--- linux-2.6.10.orig/fs/ext3/ioctl.c 2004-12-25 05:34:31.000000000 +0800
++++ linux-2.6.10/fs/ext3/ioctl.c 2005-03-31 18:39:48.579074912 +0800
+@@ -9,6 +9,7 @@
+
+ #include <linux/fs.h>
+ #include <linux/jbd.h>
++#include <linux/namei.h>
+ #include <linux/ext3_fs.h>
+ #include <linux/ext3_jbd.h>
+ #include <linux/time.h>
+@@ -25,6 +26,31 @@
+ ext3_debug ("cmd = %u, arg = %lu\n", cmd, arg);
+
+ switch (cmd) {
++ case EXT3_IOC_CREATE_INUM: {
++ char name[32];
++ struct dentry *dchild, *dparent;
++ int rc = 0;
++
++ dparent = list_entry(inode->i_dentry.next, struct dentry,
++ d_alias);
++ snprintf(name, sizeof name, "%lu", arg);
++ dchild = lookup_one_len(name, dparent, strlen(name));
++ if (dchild->d_inode) {
++ printk(KERN_ERR "%*s/%lu already exists (ino %lu)\n",
++ dparent->d_name.len, dparent->d_name.name, arg,
++ dchild->d_inode->i_ino);
++ rc = -EEXIST;
++ } else {
++ dchild->d_fsdata = (void *)arg;
++ rc = vfs_create(inode, dchild, 0644, NULL);
++ if (rc)
++ printk(KERN_ERR "vfs_create: %d\n", rc);
++ else if (dchild->d_inode->i_ino != arg)
++ rc = -EEXIST;
++ }
++ dput(dchild);
++ return rc;
++ }
+ case EXT3_IOC_GETFLAGS:
+ flags = ei->i_flags & EXT3_FL_USER_VISIBLE;
+ return put_user(flags, (int __user *) arg);
+Index: linux-2.6.10/fs/ext3/namei.c
+===================================================================
+--- linux-2.6.10.orig/fs/ext3/namei.c 2005-03-31 18:36:12.177972880 +0800
++++ linux-2.6.10/fs/ext3/namei.c 2005-03-31 18:39:48.582074456 +0800
+@@ -1940,6 +1940,19 @@
+ return err;
+ }
+
++static struct inode * ext3_new_inode_wantedi(handle_t *handle, struct inode *dir,
++ int mode, struct dentry *dentry)
++{
++ unsigned long inum = 0;
++
++ if (dentry->d_fsdata != NULL) {
++ struct dentry_params *param =
++ (struct dentry_params *) dentry->d_fsdata;
++ inum = param->p_inum;
++ }
++ return ext3_new_inode(handle, dir, mode, inum);
++}
++
+ /*
+ * By the time this is called, we already have created
+ * the directory cache entry for the new file, but it
+@@ -1965,7 +1978,7 @@
+ if (IS_DIRSYNC(dir))
+ handle->h_sync = 1;
+
+- inode = ext3_new_inode (handle, dir, mode);
++ inode = ext3_new_inode_wantedi (handle, dir, mode, dentry);
+ err = PTR_ERR(inode);
+ if (!IS_ERR(inode)) {
+ inode->i_op = &ext3_file_inode_operations;
+@@ -1999,7 +2012,7 @@
+ if (IS_DIRSYNC(dir))
+ handle->h_sync = 1;
+
+- inode = ext3_new_inode (handle, dir, mode);
++ inode = ext3_new_inode_wantedi (handle, dir, mode, dentry);
+ err = PTR_ERR(inode);
+ if (!IS_ERR(inode)) {
+ init_special_inode(inode, inode->i_mode, rdev);
+@@ -2035,7 +2048,7 @@
+ if (IS_DIRSYNC(dir))
+ handle->h_sync = 1;
+
+- inode = ext3_new_inode (handle, dir, S_IFDIR | mode);
++ inode = ext3_new_inode_wantedi (handle, dir, S_IFDIR | mode, dentry);
+ err = PTR_ERR(inode);
+ if (IS_ERR(inode))
+ goto out_stop;
+@@ -2450,7 +2463,7 @@
+ if (IS_DIRSYNC(dir))
+ handle->h_sync = 1;
+
+- inode = ext3_new_inode (handle, dir, S_IFLNK|S_IRWXUGO);
++ inode = ext3_new_inode_wantedi (handle, dir, S_IFLNK|S_IRWXUGO, dentry);
+ err = PTR_ERR(inode);
+ if (IS_ERR(inode))
+ goto out_stop;
+Index: linux-2.6.10/include/linux/ext3_fs.h
+===================================================================
+--- linux-2.6.10.orig/include/linux/ext3_fs.h 2005-03-31 18:38:11.720799608 +0800
++++ linux-2.6.10/include/linux/ext3_fs.h 2005-03-31 18:40:36.630769944 +0800
+@@ -230,6 +230,7 @@
+ #define EXT3_IOC_SETVERSION _IOW('f', 4, long)
+ #define EXT3_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long)
+ #define EXT3_IOC_GROUP_ADD _IOW('f', 8,struct ext3_new_group_input)
++/* EXT3_IOC_CREATE_INUM at bottom of file (visible to kernel and user). */
+ #define EXT3_IOC_GETVERSION_OLD _IOR('v', 1, long)
+ #define EXT3_IOC_SETVERSION_OLD _IOW('v', 2, long)
+ #ifdef CONFIG_JBD_DEBUG
+@@ -742,7 +743,8 @@
+ dx_hash_info *hinfo);
+
+ /* ialloc.c */
+-extern struct inode * ext3_new_inode (handle_t *, struct inode *, int);
++extern struct inode * ext3_new_inode (handle_t *, struct inode *, int,
++ unsigned long);
+ extern void ext3_free_inode (handle_t *, struct inode *);
+ extern struct inode * ext3_orphan_get (struct super_block *, unsigned long);
+ extern unsigned long ext3_count_free_inodes (struct super_block *);
+@@ -834,4 +836,5 @@
+
+ #endif /* __KERNEL__ */
+
++#define EXT3_IOC_CREATE_INUM _IOW('f', 5, long)
+ #endif /* _LINUX_EXT3_FS_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff