extern int optind;
extern char *optarg;
#endif
-#ifdef HAVE_OPTRESET
-extern int optreset; /* defined by BSD, but not others */
-#endif
#include "debugfs.h"
static FILE *pager;
-static unsigned dx_hack_hash (const char *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)
-
static void htree_dump_leaf_node(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
+ struct ext2_dx_root_info * rootnode,
blk_t blk, char *buf)
{
errcode_t errcode;
struct ext2_dir_entry *dirent;
- int thislen, col = 0, offset = 0;
- char name[EXT2_NAME_LEN];
+ int thislen, col = 0;
+ unsigned int offset = 0;
+ char name[EXT2_NAME_LEN + 1];
char tmp[EXT2_NAME_LEN + 16];
blk_t pblk;
+ ext2_dirhash_t hash;
+ int hash_alg;
errcode = ext2fs_bmap(fs, ino, inode, buf, 0, blk, &pblk);
if (errcode) {
com_err("htree_dump_leaf_node", errcode,
- "while mapping logical block %d\n", blk);
+ "while mapping logical block %u\n", blk);
return;
}
- errcode = io_channel_read_blk(current_fs->io, pblk, 1, buf);
+ errcode = ext2fs_read_dir_block2(current_fs, pblk, buf, 0);
if (errcode) {
com_err("htree_dump_leaf_node", errcode,
- "while reading block %d\n", blk);
+ "while reading block %u\n", blk);
return;
}
+ hash_alg = rootnode->hash_version;
+ if ((hash_alg <= EXT2_HASH_TEA) &&
+ (fs->super->s_flags & EXT2_FLAGS_UNSIGNED_HASH))
+ hash_alg += 3;
while (offset < fs->blocksize) {
dirent = (struct ext2_dir_entry *) (buf + offset);
(dirent->rec_len < 8) ||
((dirent->rec_len % 4) != 0) ||
(((dirent->name_len & 0xFF)+8) > dirent->rec_len)) {
- fprintf(pager, "Corrupted directory block (%d)!\n", blk);
+ fprintf(pager, "Corrupted directory block (%u)!\n", blk);
break;
}
thislen = ((dirent->name_len & 0xFF) < EXT2_NAME_LEN) ?
(dirent->name_len & 0xFF) : EXT2_NAME_LEN;
strncpy(name, dirent->name, thislen);
name[thislen] = '\0';
+ errcode = ext2fs_dirhash(hash_alg, name,
+ thislen, fs->super->s_hash_seed,
+ &hash, 0);
+ if (errcode)
+ com_err("htree_dump_leaf_node", errcode,
+ "while calculating hash");
sprintf(tmp, "%u 0x%08x (%d) %s ", dirent->inode,
- dx_hash(name, thislen), dirent->rec_len, name);
+ hash, dirent->rec_len, name);
thislen = strlen(tmp);
if (col + thislen > 80) {
fprintf(pager, "\n");
static void htree_dump_int_block(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
+ struct ext2_dx_root_info * rootnode,
blk_t blk, char *buf, int level);
static void htree_dump_int_node(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
+ struct ext2_dx_root_info * rootnode,
struct ext2_dx_entry *ent,
char *buf, int level)
{
- struct ext2_dx_countlimit *limit;
- int i;
+ struct ext2_dx_countlimit limit;
+ struct ext2_dx_entry e;
+ int hash, i;
+
- limit = (struct ext2_dx_countlimit *) ent;
+ limit = *((struct ext2_dx_countlimit *) ent);
+ limit.count = ext2fs_le16_to_cpu(limit.count);
+ limit.limit = ext2fs_le16_to_cpu(limit.limit);
- fprintf(pager, "Number of entries (count): %d\n", limit->count);
- fprintf(pager, "Number of entries (limit): %d\n", limit->limit);
+ fprintf(pager, "Number of entries (count): %d\n", limit.count);
+ fprintf(pager, "Number of entries (limit): %d\n", limit.limit);
- for (i=0; i < limit->count; i++)
- fprintf(pager, "Entry #%d: Hash 0x%08x, block %d\n", i,
- i ? ent[i].hash : 0, ent[i].block);
+ for (i=0; i < limit.count; i++) {
+ hash = i ? ext2fs_le32_to_cpu(ent[i].hash) : 0;
+ fprintf(pager, "Entry #%d: Hash 0x%08x%s, block %u\n", i,
+ hash, (hash & 1) ? " (**)" : "",
+ ext2fs_le32_to_cpu(ent[i].block));
+ }
fprintf(pager, "\n");
- for (i=0; i < limit->count; i++) {
- fprintf(pager, "Entry #%d: Hash 0x%08x, block %d\n", i,
- i ? ent[i].hash : 0, ent[i].block);
+ for (i=0; i < limit.count; i++) {
+ e.hash = ext2fs_le32_to_cpu(ent[i].hash);
+ e.block = ext2fs_le32_to_cpu(ent[i].block);
+ fprintf(pager, "Entry #%d: Hash 0x%08x, block %u\n", i,
+ i ? e.hash : 0, e.block);
if (level)
- htree_dump_int_block(fs, ino, inode,
- ent[i].block, buf, level-1);
+ htree_dump_int_block(fs, ino, inode, rootnode,
+ e.block, buf, level-1);
else
- htree_dump_leaf_node(fs, ino, inode,
- ent[i].block, buf);
+ htree_dump_leaf_node(fs, ino, inode, rootnode,
+ e.block, buf);
}
fprintf(pager, "---------------------\n");
static void htree_dump_int_block(ext2_filsys fs, ext2_ino_t ino,
struct ext2_inode *inode,
+ struct ext2_dx_root_info * rootnode,
blk_t blk, char *buf, int level)
{
char *cbuf;
errcode = ext2fs_bmap(fs, ino, inode, buf, 0, blk, &pblk);
if (errcode) {
com_err("htree_dump_int_block", errcode,
- "while mapping logical block %d\n", blk);
- return;
+ "while mapping logical block %u\n", blk);
+ goto errout;
}
errcode = io_channel_read_blk(current_fs->io, pblk, 1, buf);
if (errcode) {
com_err("htree_dump_int_block", errcode,
- "while reading block %d\n", blk);
- return;
+ "while reading block %u\n", blk);
+ goto errout;
}
- htree_dump_int_node(fs, ino, inode, (struct ext2_dx_entry *) (buf+8),
+ htree_dump_int_node(fs, ino, inode, rootnode,
+ (struct ext2_dx_entry *) (buf+8),
cbuf, level);
+errout:
free(cbuf);
}
{
ext2_ino_t ino;
struct ext2_inode inode;
- int retval;
- int i, c;
- int flags;
- int long_opt;
- void *buf = NULL;
- struct ext2_dx_root_info *root;
+ int c;
+ int long_opt = 0;
+ char *buf = NULL;
+ struct ext2_dx_root_info *rootnode;
struct ext2_dx_entry *ent;
struct ext2_dx_countlimit *limit;
errcode_t errcode;
pager = open_pager();
- optind = 0;
-#ifdef HAVE_OPTRESET
- optreset = 1; /* Makes BSD getopt happy */
-#endif
+ reset_getopt();
while ((c = getopt (argc, argv, "l")) != EOF) {
switch (c) {
case 'l':
long_opt++;
break;
+ default:
+ goto print_usage;
}
}
if (argc > optind+1) {
+ print_usage:
com_err(0, 0, "Usage: htree_dump [-l] file");
- return;
+ goto errout;
}
if (argc == optind)
else
ino = string_to_inode(argv[optind]);
if (!ino)
- return;
+ goto errout;
if (debugfs_read_inode(ino, &inode, argv[1]))
- return;
+ goto errout;
if (!LINUX_S_ISDIR(inode.i_mode)) {
com_err(argv[0], 0, "Not a directory");
- return;
+ goto errout;
}
if ((inode.i_flags & EXT2_BTREE_FL) == 0) {
com_err(argv[0], 0, "Not a hash-indexed directory");
- return;
+ goto errout;
}
buf = malloc(2*current_fs->blocksize);
if (!buf) {
com_err(argv[0], 0, "Couldn't allocate htree buffer");
- return;
+ goto errout;
}
errcode = io_channel_read_blk(current_fs->io, inode.i_block[0],
goto errout;
}
- root = (struct ext2_dx_root_info *) (buf + 24);
+ rootnode = (struct ext2_dx_root_info *) (buf + 24);
fprintf(pager, "Root node dump:\n");
- fprintf(pager, "\t Reserved zero: %d\n", root->reserved_zero);
- fprintf(pager, "\t Hash Version: %d\n", root->hash_version);
- fprintf(pager, "\t Info length: %d\n", root->info_length);
- fprintf(pager, "\t Indirect levels: %d\n", root->indirect_levels);
- fprintf(pager, "\t Flags: %d\n", root->unused_flags);
+ fprintf(pager, "\t Reserved zero: %u\n", rootnode->reserved_zero);
+ fprintf(pager, "\t Hash Version: %d\n", rootnode->hash_version);
+ fprintf(pager, "\t Info length: %d\n", rootnode->info_length);
+ fprintf(pager, "\t Indirect levels: %d\n", rootnode->indirect_levels);
+ fprintf(pager, "\t Flags: %d\n", rootnode->unused_flags);
- ent = (struct ext2_dx_entry *) (buf + 24 + root->info_length);
+ ent = (struct ext2_dx_entry *) (buf + 24 + rootnode->info_length);
limit = (struct ext2_dx_countlimit *) ent;
- htree_dump_int_node(current_fs, ino, &inode, ent,
+ htree_dump_int_node(current_fs, ino, &inode, rootnode, ent,
buf + current_fs->blocksize,
- root->indirect_levels);
+ rootnode->indirect_levels);
errout:
if (buf)
*/
void do_dx_hash(int argc, char *argv[])
{
- if (argc != 2) {
+ ext2_dirhash_t hash, minor_hash;
+ errcode_t err;
+ int c;
+ int hash_version = 0;
+ __u32 hash_seed[4];
+
+ hash_seed[0] = hash_seed[1] = hash_seed[2] = hash_seed[3] = 0;
+
+ reset_getopt();
+ while ((c = getopt (argc, argv, "h:")) != EOF) {
+ switch (c) {
+ case 'h':
+ hash_version = atoi(optarg);
+ break;
+ default:
+ goto print_usage;
+ }
+ }
+ if (optind != argc-1) {
+ print_usage:
com_err(argv[0], 0, "usage: dx_hash filename");
return;
}
- printf("Hash of %s is 0x%0x\n", argv[1],
- dx_hash(argv[1], strlen(argv[1])));
+ err = ext2fs_dirhash(hash_version, argv[optind], strlen(argv[optind]),
+ hash_seed, &hash, &minor_hash);
+ if (err) {
+ com_err(argv[0], err, "while caclulating hash");
+ return;
+ }
+ printf("Hash of %s is 0x%0x (minor 0x%0x)\n", argv[optind],
+ hash, minor_hash);
}
/*
void do_dirsearch(int argc, char *argv[])
{
ext2_ino_t inode;
- int retval;
- int c;
- int flags;
struct process_block_struct pb;
if (check_fs_open(argv[0]))
static int search_dir_block(ext2_filsys fs, blk_t *blocknr,
- e2_blkcnt_t blockcnt, blk_t ref_blk,
- int ref_offset, void *priv_data)
+ e2_blkcnt_t blockcnt,
+ blk_t ref_blk EXT2FS_ATTR((unused)),
+ int ref_offset EXT2FS_ATTR((unused)),
+ void *priv_data)
{
struct process_block_struct *p;
struct ext2_dir_entry *dirent;
errcode_t errcode;
- int offset = 0;
+ unsigned int offset = 0;
if (blockcnt < 0)
return 0;
errcode = io_channel_read_blk(current_fs->io, *blocknr, 1, p->buf);
if (errcode) {
com_err("search_dir_block", errcode,
- "while reading block %lu", *blocknr);
+ "while reading block %lu", (unsigned long) *blocknr);
return BLOCK_ABORT;
}
strncmp(p->search_name, dirent->name,
p->len) == 0) {
printf("Entry found at logical block %lld, "
- "phys %d, offset %d\n", blockcnt,
+ "phys %u, offset %u\n", (long long)blockcnt,
*blocknr, offset);
- printf("offset %d\n", offset);
+ printf("offset %u\n", offset);
return BLOCK_ABORT;
}
offset += dirent->rec_len;