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Date: Tue, 28 May 2013 22:45:35 +0200
From: Jan Kara <jack@...e.cz>
To: Ted Tso <tytso@....edu>
Cc: linux-ext4@...r.kernel.org, Jan Kara <jack@...e.cz>
Subject: [PATCH RESEND] libext2fs: Provide functions to safely access name_len and file_type
Accessing name_len (and file_type) in ext4_dir_entry structure is somewhat
problematic because on big endian architecture we need to now whether we
are really dealing with ext4_dir_entry (which has u16 name_len which
needs byte swapping) or ext4_dir_entry_2 (which has u8 name_len which
must not be byte swapped).
Currently the code is somewhat surprising and name_len is always treated
as u16 and byte swapped (flag EXT2_DIRBLOCK_V2_STRUCT isn't ever used)
and then masking of name_len is used to access real name_len or
file_type. Doing things this way in applications using libext2fs is
unexpected to say the least (more natural is to type struct
ext4_dir_entry * to struct ext4_dir_entry_2 * but that gives wrong
results on big endian architectures. So provide helper functions that
give endian-safe access to these fields. Also convert users in e2fsprogs
to use these functions.
Signed-off-by: Jan Kara <jack@...e.cz>
---
I didn't get any reply last time so I'm resending the patch. Ted?
debugfs/debugfs.c | 4 +--
debugfs/dump.c | 2 +-
debugfs/filefrag.c | 2 +-
debugfs/htree.c | 6 ++--
debugfs/ls.c | 5 +--
debugfs/ncheck.c | 8 +++--
e2fsck/message.c | 6 ++--
e2fsck/pass1.c | 4 +--
e2fsck/pass2.c | 48 +++++++++++++++-------------
e2fsck/pass3.c | 7 ++---
e2fsck/rehash.c | 80 ++++++++++++++++++++++++++---------------------
lib/ext2fs/dir_iterate.c | 6 ++--
lib/ext2fs/ext2_fs.h | 8 +++++
lib/ext2fs/ext2fs.h | 20 ++++++++++++
lib/ext2fs/get_pathname.c | 11 +++----
lib/ext2fs/link.c | 9 +++---
lib/ext2fs/lookup.c | 4 +--
lib/ext2fs/newdir.c | 8 +++--
lib/ext2fs/unlink.c | 4 +--
misc/tune2fs.c | 2 +-
resize/resize2fs.c | 2 +-
21 files changed, 145 insertions(+), 101 deletions(-)
diff --git a/debugfs/debugfs.c b/debugfs/debugfs.c
index 969dbe0..dcf16e2 100644
--- a/debugfs/debugfs.c
+++ b/debugfs/debugfs.c
@@ -1911,9 +1911,9 @@ static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
if (dirent->inode == 0)
return 0;
- if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
+ if ((ext2fs_dirent_name_len(dirent) == 1) && (dirent->name[0] == '.'))
return 0;
- if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
+ if ((ext2fs_dirent_name_len(dirent) == 2) && (dirent->name[0] == '.') &&
(dirent->name[1] == '.')) {
rds->parent = dirent->inode;
return 0;
diff --git a/debugfs/dump.c b/debugfs/dump.c
index 9409ab6..c75b9f1 100644
--- a/debugfs/dump.c
+++ b/debugfs/dump.c
@@ -308,7 +308,7 @@ static int rdump_dirent(struct ext2_dir_entry *dirent,
const char *dumproot = private;
struct ext2_inode inode;
- thislen = dirent->name_len & 0xFF;
+ thislen = ext2fs_dirent_name_len(dirent);
strncpy(name, dirent->name, thislen);
name[thislen] = 0;
diff --git a/debugfs/filefrag.c b/debugfs/filefrag.c
index 7f28bc0..e82d133 100644
--- a/debugfs/filefrag.c
+++ b/debugfs/filefrag.c
@@ -183,7 +183,7 @@ static int filefrag_dir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
if (entry == DIRENT_DELETED_FILE)
return 0;
- thislen = dirent->name_len & 0xFF;
+ thislen = ext2fs_dirent_name_len(dirent);
strncpy(name, dirent->name, thislen);
name[thislen] = '\0';
ino = dirent->inode;
diff --git a/debugfs/htree.c b/debugfs/htree.c
index d94dbea..4f0118d 100644
--- a/debugfs/htree.c
+++ b/debugfs/htree.c
@@ -79,15 +79,15 @@ static void htree_dump_leaf_node(ext2_filsys fs, ext2_ino_t ino,
(unsigned long) blk);
return;
}
+ thislen = ext2fs_dirent_name_len(dirent);
if (((offset + rec_len) > fs->blocksize) ||
(rec_len < 8) ||
((rec_len % 4) != 0) ||
- ((((unsigned) dirent->name_len & 0xFF)+8) > rec_len)) {
+ (thislen + 8 > rec_len)) {
fprintf(pager, "Corrupted directory block (%llu)!\n",
blk);
break;
}
- thislen = dirent->name_len & 0xFF;
strncpy(name, dirent->name, thislen);
name[thislen] = '\0';
errcode = ext2fs_dirhash(hash_alg, name,
@@ -428,7 +428,7 @@ static int search_dir_block(ext2_filsys fs, blk64_t *blocknr,
return BLOCK_ABORT;
}
if (dirent->inode &&
- p->len == (dirent->name_len & 0xFF) &&
+ p->len == ext2fs_dirent_name_len(dirent) &&
strncmp(p->search_name, dirent->name,
p->len) == 0) {
printf("Entry found at logical block %lld, "
diff --git a/debugfs/ls.c b/debugfs/ls.c
index 032d12d..69c7897 100644
--- a/debugfs/ls.c
+++ b/debugfs/ls.c
@@ -61,7 +61,7 @@ static int list_dir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
struct list_dir_struct *ls = (struct list_dir_struct *) private;
struct ext2_dir_entry_tail *t = (struct ext2_dir_entry_tail *) dirent;
- thislen = dirent->name_len & 0xFF;
+ thislen = ext2fs_dirent_name_len(dirent);
strncpy(name, dirent->name, thislen);
name[thislen] = '\0';
ino = dirent->inode;
@@ -105,7 +105,8 @@ static int list_dir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
t->det_checksum);
return 0;
}
- fprintf(ls->f, "(%d) %5d %5d ", dirent->name_len >> 8,
+ fprintf(ls->f, "(%d) %5d %5d ",
+ ext2fs_dirent_file_type(dirent),
inode_uid(inode), inode_gid(inode));
if (LINUX_S_ISDIR(inode.i_mode))
fprintf(ls->f, "%5d", inode.i_size);
diff --git a/debugfs/ncheck.c b/debugfs/ncheck.c
index 58f3a50..5d9b5d2 100644
--- a/debugfs/ncheck.c
+++ b/debugfs/ncheck.c
@@ -45,7 +45,7 @@ static int ncheck_proc(struct ext2_dir_entry *dirent,
struct inode_walk_struct *iw = (struct inode_walk_struct *) private;
struct ext2_inode inode;
errcode_t retval;
- int filetype = dirent->name_len >> 8;
+ int filetype = ext2fs_dirent_file_type(dirent);
int i;
iw->position++;
@@ -66,11 +66,13 @@ static int ncheck_proc(struct ext2_dir_entry *dirent,
if (iw->parent)
printf("%u\t%s/%.*s", iw->iarray[i],
iw->parent,
- (dirent->name_len & 0xFF), dirent->name);
+ ext2fs_dirent_name_len(dirent),
+ dirent->name);
else
printf("%u\t<%u>/%.*s", iw->iarray[i],
iw->dir,
- (dirent->name_len & 0xFF), dirent->name);
+ ext2fs_dirent_name_len(dirent),
+ dirent->name);
if (iw->check_dirent && filetype) {
if (!debugfs_read_inode(dirent->inode, &inode,
"ncheck") &&
diff --git a/e2fsck/message.c b/e2fsck/message.c
index b99473d..72a56ca 100644
--- a/e2fsck/message.c
+++ b/e2fsck/message.c
@@ -373,7 +373,7 @@ static _INLINE_ void expand_dirent_expression(FILE *f, ext2_filsys fs, char ch,
fprintf(f, "%u", dirent->inode);
break;
case 'n':
- len = dirent->name_len & 0xFF;
+ len = ext2fs_dirent_name_len(dirent);
if ((ext2fs_get_rec_len(fs, dirent, &rec_len) == 0) &&
(len > rec_len))
len = rec_len;
@@ -384,10 +384,10 @@ static _INLINE_ void expand_dirent_expression(FILE *f, ext2_filsys fs, char ch,
fprintf(f, "%u", rec_len);
break;
case 'l':
- fprintf(f, "%u", dirent->name_len & 0xFF);
+ fprintf(f, "%u", ext2fs_dirent_name_len(dirent));
break;
case 't':
- fprintf(f, "%u", dirent->name_len >> 8);
+ fprintf(f, "%u", ext2fs_dirent_file_type(dirent));
break;
default:
no_dirent:
diff --git a/e2fsck/pass1.c b/e2fsck/pass1.c
index 1b410be..df9457e 100644
--- a/e2fsck/pass1.c
+++ b/e2fsck/pass1.c
@@ -482,7 +482,7 @@ static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
if (retval)
return;
- if (((dirent->name_len & 0xFF) != 1) ||
+ if ((ext2fs_dirent_name_len(dirent) != 1) ||
(dirent->name[0] != '.') ||
(dirent->inode != pctx->ino) ||
(rec_len < 12) ||
@@ -494,7 +494,7 @@ static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
if (retval)
return;
- if (((dirent->name_len & 0xFF) != 2) ||
+ if ((ext2fs_dirent_name_len(dirent) != 2) ||
(dirent->name[0] != '.') ||
(dirent->name[1] != '.') ||
(rec_len < 12) ||
diff --git a/e2fsck/pass2.c b/e2fsck/pass2.c
index 257589c..85ce982 100644
--- a/e2fsck/pass2.c
+++ b/e2fsck/pass2.c
@@ -302,9 +302,9 @@ static int dict_de_cmp(const void *a, const void *b)
int a_len, b_len;
de_a = (const struct ext2_dir_entry *) a;
- a_len = de_a->name_len & 0xFF;
+ a_len = ext2fs_dirent_name_len(de_a);
de_b = (const struct ext2_dir_entry *) b;
- b_len = de_b->name_len & 0xFF;
+ b_len = ext2fs_dirent_name_len(de_b);
if (a_len != b_len)
return (a_len - b_len);
@@ -357,7 +357,7 @@ static int check_dot(e2fsck_t ctx,
if (!dirent->inode)
problem = PR_2_MISSING_DOT;
- else if (((dirent->name_len & 0xFF) != 1) ||
+ else if ((ext2fs_dirent_name_len(dirent) != 1) ||
(dirent->name[0] != '.'))
problem = PR_2_1ST_NOT_DOT;
else if (dirent->name[1] != '\0')
@@ -369,7 +369,8 @@ static int check_dot(e2fsck_t ctx,
if (rec_len < 12)
rec_len = dirent->rec_len = 12;
dirent->inode = ino;
- dirent->name_len = 1;
+ ext2fs_dirent_set_name_len(dirent, 1);
+ ext2fs_dirent_set_file_type(dirent, EXT2_FT_UNKNOWN);
dirent->name[0] = '.';
dirent->name[1] = '\0';
status = 1;
@@ -393,7 +394,9 @@ static int check_dot(e2fsck_t ctx,
(void) ext2fs_set_rec_len(ctx->fs, new_len,
nextdir);
nextdir->inode = 0;
- nextdir->name_len = 0;
+ ext2fs_dirent_set_name_len(nextdir, 0);
+ ext2fs_dirent_set_file_type(nextdir,
+ EXT2_FT_UNKNOWN);
status = 1;
}
}
@@ -415,7 +418,7 @@ static int check_dotdot(e2fsck_t ctx,
if (!dirent->inode)
problem = PR_2_MISSING_DOT_DOT;
- else if (((dirent->name_len & 0xFF) != 2) ||
+ else if ((ext2fs_dirent_name_len(dirent) != 2) ||
(dirent->name[0] != '.') ||
(dirent->name[1] != '.'))
problem = PR_2_2ND_NOT_DOT_DOT;
@@ -433,7 +436,8 @@ static int check_dotdot(e2fsck_t ctx,
* inode. This will get fixed in pass 3.
*/
dirent->inode = EXT2_ROOT_INO;
- dirent->name_len = 2;
+ ext2fs_dirent_set_name_len(dirent, 2);
+ ext2fs_dirent_set_file_type(dirent, EXT2_FT_UNKNOWN);
dirent->name[0] = '.';
dirent->name[1] = '.';
dirent->name[2] = '\0';
@@ -461,7 +465,7 @@ static int check_name(e2fsck_t ctx,
int fixup = -1;
int ret = 0;
- for ( i = 0; i < (dirent->name_len & 0xFF); i++) {
+ for ( i = 0; i < ext2fs_dirent_name_len(dirent); i++) {
if (dirent->name[i] == '/' || dirent->name[i] == '\0') {
if (fixup < 0) {
fixup = fix_problem(ctx, PR_2_BAD_NAME, pctx);
@@ -483,7 +487,7 @@ static _INLINE_ int check_filetype(e2fsck_t ctx,
ext2_ino_t dir_ino EXT2FS_ATTR((unused)),
struct problem_context *pctx)
{
- int filetype = dirent->name_len >> 8;
+ int filetype = ext2fs_dirent_file_type(dirent);
int should_be = EXT2_FT_UNKNOWN;
struct ext2_inode inode;
@@ -492,7 +496,7 @@ static _INLINE_ int check_filetype(e2fsck_t ctx,
if (filetype == 0 ||
!fix_problem(ctx, PR_2_CLEAR_FILETYPE, pctx))
return 0;
- dirent->name_len = dirent->name_len & 0xFF;
+ ext2fs_dirent_set_file_type(dirent, EXT2_FT_UNKNOWN);
return 1;
}
@@ -518,7 +522,7 @@ static _INLINE_ int check_filetype(e2fsck_t ctx,
pctx) == 0)
return 0;
- dirent->name_len = (dirent->name_len & 0xFF) | should_be << 8;
+ ext2fs_dirent_set_file_type(dirent, should_be);
return 1;
}
@@ -666,7 +670,7 @@ static void salvage_directory(ext2_filsys fs,
char *cp = (char *) dirent;
int left;
unsigned int rec_len, prev_rec_len;
- unsigned int name_len = dirent->name_len & 0xFF;
+ unsigned int name_len = ext2fs_dirent_name_len(dirent);
(void) ext2fs_get_rec_len(fs, dirent, &rec_len);
left = fs->blocksize - *offset - rec_len;
@@ -720,7 +724,8 @@ static void salvage_directory(ext2_filsys fs,
} else {
rec_len = fs->blocksize - *offset;
(void) ext2fs_set_rec_len(fs, rec_len, dirent);
- dirent->name_len = 0;
+ ext2fs_dirent_set_name_len(dirent, 0);
+ ext2fs_dirent_set_file_type(dirent, EXT2_FT_UNKNOWN);
dirent->inode = 0;
}
}
@@ -868,7 +873,7 @@ static int check_dir_block(ext2_filsys fs,
dx_dir->depth = root->indirect_levels + 1;
} else if ((dirent->inode == 0) &&
(rec_len == fs->blocksize) &&
- (dirent->name_len == 0) &&
+ (ext2fs_dirent_name_len(dirent) == 0) &&
(ext2fs_le16_to_cpu(limit->limit) ==
((fs->blocksize - (8 + dx_csum_size)) /
sizeof(struct ext2_dx_entry))))
@@ -915,6 +920,7 @@ skip_checksum:
do {
int group;
ext2_ino_t first_unused_inode;
+ unsigned int name_len;
problem = 0;
dirent = (struct ext2_dir_entry *) (buf + offset);
@@ -924,7 +930,7 @@ skip_checksum:
if (((offset + rec_len) > fs->blocksize) ||
(rec_len < 12) ||
((rec_len % 4) != 0) ||
- (((dirent->name_len & (unsigned) 0xFF)+8) > rec_len)) {
+ ((ext2fs_dirent_name_len(dirent) + 8) > rec_len)) {
if (fix_problem(ctx, PR_2_DIR_CORRUPTED, &cd->pctx)) {
salvage_directory(fs, dirent, prev, &offset);
dir_modified++;
@@ -956,6 +962,7 @@ skip_checksum:
/*
* Make sure the inode listed is a legal one.
*/
+ name_len = ext2fs_dirent_name_len(dirent);
if (((dirent->inode != EXT2_ROOT_INO) &&
(dirent->inode < EXT2_FIRST_INODE(fs->super))) ||
(dirent->inode > fs->super->s_inodes_count)) {
@@ -968,8 +975,7 @@ skip_checksum:
* clear it.
*/
problem = PR_2_BB_INODE;
- } else if ((dot_state > 1) &&
- ((dirent->name_len & 0xFF) == 1) &&
+ } else if ((dot_state > 1) && (name_len == 1) &&
(dirent->name[0] == '.')) {
/*
* If there's a '.' entry in anything other
@@ -977,8 +983,7 @@ skip_checksum:
* duplicate entry that should be removed.
*/
problem = PR_2_DUP_DOT;
- } else if ((dot_state > 1) &&
- ((dirent->name_len & 0xFF) == 2) &&
+ } else if ((dot_state > 1) && (name_len == 2) &&
(dirent->name[0] == '.') &&
(dirent->name[1] == '.')) {
/*
@@ -996,8 +1001,7 @@ skip_checksum:
* directory hasn't been created yet.
*/
problem = PR_2_LINK_ROOT;
- } else if ((dot_state > 1) &&
- (dirent->name_len & 0xFF) == 0) {
+ } else if ((dot_state > 1) && (name_len == 0)) {
/*
* Don't allow zero-length directory names.
*/
@@ -1110,7 +1114,7 @@ skip_checksum:
#ifdef ENABLE_HTREE
if (dx_db) {
ext2fs_dirhash(dx_dir->hashversion, dirent->name,
- (dirent->name_len & 0xFF),
+ ext2fs_dirent_name_len(dirent),
fs->super->s_hash_seed, &hash, 0);
if (hash < dx_db->min_hash)
dx_db->min_hash = hash;
diff --git a/e2fsck/pass3.c b/e2fsck/pass3.c
index a379e9b..193ec1c 100644
--- a/e2fsck/pass3.c
+++ b/e2fsck/pass3.c
@@ -612,7 +612,7 @@ static int fix_dotdot_proc(struct ext2_dir_entry *dirent,
errcode_t retval;
struct problem_context pctx;
- if ((dirent->name_len & 0xFF) != 2)
+ if (ext2fs_dirent_name_len(dirent) != 2)
return 0;
if (strncmp(dirent->name, "..", 2))
return 0;
@@ -632,10 +632,9 @@ static int fix_dotdot_proc(struct ext2_dir_entry *dirent,
dirent->inode = fp->parent;
if (fp->ctx->fs->super->s_feature_incompat &
EXT2_FEATURE_INCOMPAT_FILETYPE)
- dirent->name_len = (dirent->name_len & 0xFF) |
- (EXT2_FT_DIR << 8);
+ ext2fs_dirent_set_file_type(dirent, EXT2_FT_DIR);
else
- dirent->name_len = dirent->name_len & 0xFF;
+ ext2fs_dirent_set_file_type(dirent, EXT2_FT_UNKNOWN);
fp->done++;
return DIRENT_ABORT | DIRENT_CHANGED;
diff --git a/e2fsck/rehash.c b/e2fsck/rehash.c
index 5592e3f..c1c74c8 100644
--- a/e2fsck/rehash.c
+++ b/e2fsck/rehash.c
@@ -109,7 +109,7 @@ static int fill_dir_block(ext2_filsys fs,
struct hash_entry *new_array, *ent;
struct ext2_dir_entry *dirent;
char *dir;
- unsigned int offset, dir_offset, rec_len;
+ unsigned int offset, dir_offset, rec_len, name_len;
int hash_alg;
if (blockcnt < 0)
@@ -142,20 +142,21 @@ static int fill_dir_block(ext2_filsys fs,
while (dir_offset < fs->blocksize) {
dirent = (struct ext2_dir_entry *) (dir + dir_offset);
(void) ext2fs_get_rec_len(fs, dirent, &rec_len);
+ name_len = ext2fs_dirent_name_len(dirent);
if (((dir_offset + rec_len) > fs->blocksize) ||
(rec_len < 8) ||
((rec_len % 4) != 0) ||
- (((dirent->name_len & 0xFF)+8U) > rec_len)) {
+ (name_len + 8 > rec_len)) {
fd->err = EXT2_ET_DIR_CORRUPTED;
return BLOCK_ABORT;
}
dir_offset += rec_len;
if (dirent->inode == 0)
continue;
- if (!fd->compress && ((dirent->name_len&0xFF) == 1) &&
+ if (!fd->compress && (name_len == 1) &&
(dirent->name[0] == '.'))
continue;
- if (!fd->compress && ((dirent->name_len&0xFF) == 2) &&
+ if (!fd->compress && (name_len == 2) &&
(dirent->name[0] == '.') && (dirent->name[1] == '.')) {
fd->parent = dirent->inode;
continue;
@@ -172,13 +173,13 @@ static int fill_dir_block(ext2_filsys fs,
}
ent = fd->harray + fd->num_array++;
ent->dir = dirent;
- fd->dir_size += EXT2_DIR_REC_LEN(dirent->name_len & 0xFF);
+ fd->dir_size += EXT2_DIR_REC_LEN(name_len);
ent->ino = dirent->inode;
if (fd->compress)
ent->hash = ent->minor_hash = 0;
else {
fd->err = ext2fs_dirhash(hash_alg, dirent->name,
- dirent->name_len & 0xFF,
+ name_len,
fs->super->s_hash_seed,
&ent->hash, &ent->minor_hash);
if (fd->err)
@@ -203,18 +204,21 @@ static EXT2_QSORT_TYPE name_cmp(const void *a, const void *b)
{
const struct hash_entry *he_a = (const struct hash_entry *) a;
const struct hash_entry *he_b = (const struct hash_entry *) b;
+ unsigned int he_a_len, he_b_len;
int ret;
int min_len;
- min_len = he_a->dir->name_len;
- if (min_len > he_b->dir->name_len)
- min_len = he_b->dir->name_len;
+ he_a_len = ext2fs_dirent_name_len(he_a->dir);
+ he_b_len = ext2fs_dirent_name_len(he_b->dir);
+ min_len = he_a_len;
+ if (min_len > he_b_len)
+ min_len = he_b_len;
ret = strncmp(he_a->dir->name, he_b->dir->name, min_len);
if (ret == 0) {
- if (he_a->dir->name_len > he_b->dir->name_len)
+ if (he_a_len > he_b_len)
ret = 1;
- else if (he_a->dir->name_len < he_b->dir->name_len)
+ else if (he_a_len < he_b_len)
ret = -1;
else
ret = he_b->dir->inode - he_a->dir->inode;
@@ -297,10 +301,10 @@ static errcode_t get_next_block(ext2_filsys fs, struct out_dir *outdir,
* expand the length of the filename beyond the padding available in
* the directory entry.
*/
-static void mutate_name(char *str, __u16 *len)
+static void mutate_name(char *str, unsigned int *len)
{
int i;
- __u16 l = *len & 0xFF, h = *len & 0xff00;
+ unsigned int l = *len;
/*
* First check to see if it looks the name has been mutated
@@ -317,7 +321,7 @@ static void mutate_name(char *str, __u16 *len)
l = (l+3) & ~3;
str[l-2] = '~';
str[l-1] = '0';
- *len = l | h;
+ *len = l;
return;
}
for (i = l-1; i >= 0; i--) {
@@ -360,7 +364,7 @@ static int duplicate_search_and_fix(e2fsck_t ctx, ext2_filsys fs,
int i, j;
int fixed = 0;
char new_name[256];
- __u16 new_len;
+ unsigned int new_len;
int hash_alg;
clear_problem_context(&pctx);
@@ -375,10 +379,10 @@ static int duplicate_search_and_fix(e2fsck_t ctx, ext2_filsys fs,
ent = fd->harray + i;
prev = ent - 1;
if (!ent->dir->inode ||
- ((ent->dir->name_len & 0xFF) !=
- (prev->dir->name_len & 0xFF)) ||
- (strncmp(ent->dir->name, prev->dir->name,
- ent->dir->name_len & 0xFF)))
+ (ext2fs_dirent_name_len(ent->dir) !=
+ ext2fs_dirent_name_len(prev->dir)) ||
+ strncmp(ent->dir->name, prev->dir->name,
+ ext2fs_dirent_name_len(ent->dir)))
continue;
pctx.dirent = ent->dir;
if ((ent->dir->inode == prev->dir->inode) &&
@@ -388,27 +392,25 @@ static int duplicate_search_and_fix(e2fsck_t ctx, ext2_filsys fs,
fixed++;
continue;
}
- memcpy(new_name, ent->dir->name, ent->dir->name_len & 0xFF);
- new_len = ent->dir->name_len;
+ new_len = ext2fs_dirent_name_len(ent->dir);
+ memcpy(new_name, ent->dir->name, new_len);
mutate_name(new_name, &new_len);
for (j=0; j < fd->num_array; j++) {
if ((i==j) ||
- ((new_len & 0xFF) !=
- (fd->harray[j].dir->name_len & 0xFF)) ||
- (strncmp(new_name, fd->harray[j].dir->name,
- new_len & 0xFF)))
+ (new_len !=
+ ext2fs_dirent_name_len(fd->harray[j].dir)) ||
+ strncmp(new_name, fd->harray[j].dir->name, new_len))
continue;
mutate_name(new_name, &new_len);
j = -1;
}
- new_name[new_len & 0xFF] = 0;
+ new_name[new_len] = 0;
pctx.str = new_name;
if (fix_problem(ctx, PR_2_NON_UNIQUE_FILE, &pctx)) {
- memcpy(ent->dir->name, new_name, new_len & 0xFF);
- ent->dir->name_len = new_len;
- ext2fs_dirhash(hash_alg, ent->dir->name,
- ent->dir->name_len & 0xFF,
+ memcpy(ent->dir->name, new_name, new_len);
+ ext2fs_dirent_set_name_len(ent->dir, new_len);
+ ext2fs_dirhash(hash_alg, ent->dir->name, new_len,
fs->super->s_hash_seed,
&ent->hash, &ent->minor_hash);
fixed++;
@@ -469,7 +471,7 @@ static errcode_t copy_dir_entries(e2fsck_t ctx,
ent = fd->harray + i;
if (ent->dir->inode == 0)
continue;
- rec_len = EXT2_DIR_REC_LEN(ent->dir->name_len & 0xFF);
+ rec_len = EXT2_DIR_REC_LEN(ext2fs_dirent_name_len(ent->dir));
if (rec_len > left) {
if (left) {
left += prev_rec_len;
@@ -496,12 +498,16 @@ static errcode_t copy_dir_entries(e2fsck_t ctx,
outdir->hashes[outdir->num-1] = ent->hash;
}
dirent->inode = ent->dir->inode;
- dirent->name_len = ent->dir->name_len;
+ ext2fs_dirent_set_name_len(dirent,
+ ext2fs_dirent_name_len(ent->dir));
+ ext2fs_dirent_set_file_type(dirent,
+ ext2fs_dirent_file_type(ent->dir));
retval = ext2fs_set_rec_len(fs, rec_len, dirent);
if (retval)
return retval;
prev_rec_len = rec_len;
- memcpy(dirent->name, ent->dir->name, dirent->name_len & 0xFF);
+ memcpy(dirent->name, ent->dir->name,
+ ext2fs_dirent_name_len(dirent));
offset += rec_len;
left -= rec_len;
if (left < slack) {
@@ -535,19 +541,21 @@ static struct ext2_dx_root_info *set_root_node(ext2_filsys fs, char *buf,
int csum_size = 0;
if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_FILETYPE)
- filetype = EXT2_FT_DIR << 8;
+ filetype = EXT2_FT_DIR;
memset(buf, 0, fs->blocksize);
dir = (struct ext2_dir_entry *) buf;
dir->inode = ino;
dir->name[0] = '.';
- dir->name_len = 1 | filetype;
+ ext2fs_dirent_set_name_len(dir, 1);
+ ext2fs_dirent_set_file_type(dir, filetype);
dir->rec_len = 12;
dir = (struct ext2_dir_entry *) (buf + 12);
dir->inode = parent;
dir->name[0] = '.';
dir->name[1] = '.';
- dir->name_len = 2 | filetype;
+ ext2fs_dirent_set_name_len(dir, 2);
+ ext2fs_dirent_set_file_type(dir, filetype);
dir->rec_len = fs->blocksize - 12;
root = (struct ext2_dx_root_info *) (buf+24);
diff --git a/lib/ext2fs/dir_iterate.c b/lib/ext2fs/dir_iterate.c
index 1a4bf5c..8be0ac2 100644
--- a/lib/ext2fs/dir_iterate.c
+++ b/lib/ext2fs/dir_iterate.c
@@ -83,7 +83,7 @@ static int ext2fs_validate_entry(ext2_filsys fs, char *buf,
offset += rec_len;
if ((rec_len < 8) ||
((rec_len % 4) != 0) ||
- ((((unsigned) dirent->name_len & 0xFF)+8) > rec_len))
+ ((ext2fs_dirent_name_len(dirent)+8) > rec_len))
return 0;
}
return (offset == final_offset);
@@ -215,7 +215,7 @@ int ext2fs_process_dir_block(ext2_filsys fs,
if (((offset + rec_len) > fs->blocksize) ||
(rec_len < 8) ||
((rec_len % 4) != 0) ||
- ((((unsigned) dirent->name_len & 0xFF)+8) > rec_len)) {
+ ((ext2fs_dirent_name_len(dirent)+8) > rec_len)) {
ctx->errcode = EXT2_ET_DIR_CORRUPTED;
return BLOCK_ABORT;
}
@@ -253,7 +253,7 @@ next:
next_real_entry += rec_len;
if (ctx->flags & DIRENT_FLAG_INCLUDE_REMOVED) {
- size = ((dirent->name_len & 0xFF) + 11) & ~3;
+ size = (ext2fs_dirent_name_len(dirent) + 11) & ~3;
if (rec_len != size) {
unsigned int final_offset;
diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h
index 0c0bbcb..6a28d55 100644
--- a/lib/ext2fs/ext2_fs.h
+++ b/lib/ext2fs/ext2_fs.h
@@ -803,6 +803,14 @@ struct ext2_dir_entry {
* stored in intel byte order, and the name_len field could never be
* bigger than 255 chars, it's safe to reclaim the extra byte for the
* file_type field.
+ *
+ * This structure is deprecated due to endianity issues. Please use struct
+ * ext2_dir_entry and accessor functions
+ * ext2fs_dirent_name_len
+ * ext2fs_dirent_set_name_len
+ * ext2fs_dirent_file_type
+ * ext2fs_dirent_set_file_type
+ * to get and set name_len and file_type fields.
*/
struct ext2_dir_entry_2 {
__u32 inode; /* Inode number */
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index 6923f34..48bc8bb 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -1805,6 +1805,26 @@ _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
return ((a - 1) / b) + 1;
}
+_INLINE_ int ext2fs_dirent_name_len(const struct ext2_dir_entry *entry)
+{
+ return entry->name_len & 0xff;
+}
+
+_INLINE_ void ext2fs_dirent_set_name_len(struct ext2_dir_entry *entry, int len)
+{
+ entry->name_len = (entry->name_len & 0xff00) | (len & 0xff);
+}
+
+_INLINE_ int ext2fs_dirent_file_type(const struct ext2_dir_entry *entry)
+{
+ return entry->name_len >> 8;
+}
+
+_INLINE_ void ext2fs_dirent_set_file_type(struct ext2_dir_entry *entry, int type)
+{
+ entry->name_len = (entry->name_len & 0xff) | (type << 8);
+}
+
#undef _INLINE_
#endif
diff --git a/lib/ext2fs/get_pathname.c b/lib/ext2fs/get_pathname.c
index 52aea62..4c9c765 100644
--- a/lib/ext2fs/get_pathname.c
+++ b/lib/ext2fs/get_pathname.c
@@ -49,21 +49,20 @@ static int get_pathname_proc(struct ext2_dir_entry *dirent,
{
struct get_pathname_struct *gp;
errcode_t retval;
+ int name_len = ext2fs_dirent_name_len(dirent);
gp = (struct get_pathname_struct *) priv_data;
- if (((dirent->name_len & 0xFF) == 2) &&
- !strncmp(dirent->name, "..", 2))
+ if ((name_len == 2) && !strncmp(dirent->name, "..", 2))
gp->parent = dirent->inode;
if (dirent->inode == gp->search_ino) {
- retval = ext2fs_get_mem((dirent->name_len & 0xFF) + 1,
- &gp->name);
+ retval = ext2fs_get_mem(name_len + 1, &gp->name);
if (retval) {
gp->errcode = retval;
return DIRENT_ABORT;
}
- strncpy(gp->name, dirent->name, (dirent->name_len & 0xFF));
- gp->name[dirent->name_len & 0xFF] = '\0';
+ strncpy(gp->name, dirent->name, name_len);
+ gp->name[name_len] = '\0';
return DIRENT_ABORT;
}
return 0;
diff --git a/lib/ext2fs/link.c b/lib/ext2fs/link.c
index 2dec5dc..f715067 100644
--- a/lib/ext2fs/link.c
+++ b/lib/ext2fs/link.c
@@ -73,7 +73,7 @@ static int link_proc(struct ext2_dir_entry *dirent,
* truncate it and return.
*/
if (dirent->inode) {
- min_rec_len = EXT2_DIR_REC_LEN(dirent->name_len & 0xFF);
+ min_rec_len = EXT2_DIR_REC_LEN(ext2fs_dirent_name_len(dirent));
if (curr_rec_len < (min_rec_len + rec_len))
return ret;
rec_len = curr_rec_len - min_rec_len;
@@ -83,7 +83,8 @@ static int link_proc(struct ext2_dir_entry *dirent,
next = (struct ext2_dir_entry *) (buf + offset +
dirent->rec_len);
next->inode = 0;
- next->name_len = 0;
+ ext2fs_dirent_set_name_len(next, 0);
+ ext2fs_dirent_set_file_type(next, 0);
ls->err = ext2fs_set_rec_len(ls->fs, rec_len, next);
if (ls->err)
return DIRENT_ABORT;
@@ -97,10 +98,10 @@ static int link_proc(struct ext2_dir_entry *dirent,
if (curr_rec_len < rec_len)
return ret;
dirent->inode = ls->inode;
- dirent->name_len = ls->namelen;
+ ext2fs_dirent_set_name_len(dirent, ls->namelen);
strncpy(dirent->name, ls->name, ls->namelen);
if (ls->sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_FILETYPE)
- dirent->name_len |= (ls->flags & 0x7) << 8;
+ ext2fs_dirent_set_file_type(dirent, ls->flags & 0x7);
ls->done++;
return DIRENT_ABORT|DIRENT_CHANGED;
diff --git a/lib/ext2fs/lookup.c b/lib/ext2fs/lookup.c
index 0e66e71..c1d802c 100644
--- a/lib/ext2fs/lookup.c
+++ b/lib/ext2fs/lookup.c
@@ -37,9 +37,9 @@ static int lookup_proc(struct ext2_dir_entry *dirent,
{
struct lookup_struct *ls = (struct lookup_struct *) priv_data;
- if (ls->len != (dirent->name_len & 0xFF))
+ if (ls->len != ext2fs_dirent_name_len(dirent))
return 0;
- if (strncmp(ls->name, dirent->name, (dirent->name_len & 0xFF)))
+ if (strncmp(ls->name, dirent->name, ext2fs_dirent_name_len(dirent)))
return 0;
*ls->inode = dirent->inode;
ls->found++;
diff --git a/lib/ext2fs/newdir.c b/lib/ext2fs/newdir.c
index 2cd541d..d134bdf 100644
--- a/lib/ext2fs/newdir.c
+++ b/lib/ext2fs/newdir.c
@@ -56,12 +56,13 @@ errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
if (dir_ino) {
if (fs->super->s_feature_incompat &
EXT2_FEATURE_INCOMPAT_FILETYPE)
- filetype = EXT2_FT_DIR << 8;
+ filetype = EXT2_FT_DIR;
/*
* Set up entry for '.'
*/
dir->inode = dir_ino;
- dir->name_len = 1 | filetype;
+ ext2fs_dirent_set_name_len(dir, 1);
+ ext2fs_dirent_set_file_type(dir, filetype);
dir->name[0] = '.';
rec_len = (fs->blocksize - csum_size) - EXT2_DIR_REC_LEN(1);
dir->rec_len = EXT2_DIR_REC_LEN(1);
@@ -74,7 +75,8 @@ errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
if (retval)
return retval;
dir->inode = parent_ino;
- dir->name_len = 2 | filetype;
+ ext2fs_dirent_set_name_len(dir, 2);
+ ext2fs_dirent_set_file_type(dir, filetype);
dir->name[0] = '.';
dir->name[1] = '.';
diff --git a/lib/ext2fs/unlink.c b/lib/ext2fs/unlink.c
index d2d31cc..8ab27ee 100644
--- a/lib/ext2fs/unlink.c
+++ b/lib/ext2fs/unlink.c
@@ -44,9 +44,9 @@ static int unlink_proc(struct ext2_dir_entry *dirent,
ls->prev = dirent;
if (ls->name) {
- if ((dirent->name_len & 0xFF) != ls->namelen)
+ if (ext2fs_dirent_name_len(dirent) != ls->namelen)
return 0;
- if (strncmp(ls->name, dirent->name, dirent->name_len & 0xFF))
+ if (strncmp(ls->name, dirent->name, ext2fs_dirent_name_len(dirent)))
return 0;
}
if (ls->inode) {
diff --git a/misc/tune2fs.c b/misc/tune2fs.c
index 7d6520e..c38711d 100644
--- a/misc/tune2fs.c
+++ b/misc/tune2fs.c
@@ -515,7 +515,7 @@ static int rewrite_dir_block(ext2_filsys fs,
ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
if (ctx->errcode)
return BLOCK_ABORT;
- name_size = last_de->name_len & 0xFF;
+ name_size = ext2fs_dirent_name_len(last_de);
if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
diff --git a/resize/resize2fs.c b/resize/resize2fs.c
index e40a85c..aa2364c 100644
--- a/resize/resize2fs.c
+++ b/resize/resize2fs.c
@@ -1591,7 +1591,7 @@ static int check_and_change_inodes(ext2_ino_t dir,
#ifdef RESIZE2FS_DEBUG
if (is->rfs->flags & RESIZE_DEBUG_INODEMAP)
printf("Inode translate (dir=%u, name=%.*s, %u->%u)\n",
- dir, dirent->name_len&0xFF, dirent->name,
+ dir, ext2fs_dirent_name_len(dirent), dirent->name,
dirent->inode, new_inode);
#endif
--
1.8.1.4
--
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