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fs/affs: define AFFSNAMEMAX to replace constant use

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30 was used all over the place to compare name length against
AFFS maximum name length.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Fabian Frederick 2015-02-17 13:46:23 -08:00 committed by Linus Torvalds
parent eeb36f8e93
commit f157853e40
5 changed files with 16 additions and 13 deletions
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2
fs/affs/affs.h
View File

@ -30,6 +30,8 @@
#define AFFS_AC_SIZE (AFFS_CACHE_SIZE/sizeof(struct affs_ext_key)/2)
#define AFFS_AC_MASK (AFFS_AC_SIZE-1)
#define AFFSNAMEMAX 30U
struct affs_ext_key {
u32 ext; /* idx of the extended block */
u32 key; /* block number */

6
fs/affs/amigaffs.c
View File

@ -483,11 +483,11 @@ affs_check_name(const unsigned char *name, int len, bool notruncate)
{
int i;
if (len > 30) {
if (len > AFFSNAMEMAX) {
if (notruncate)
return -ENAMETOOLONG;
else
len = 30;
len = AFFSNAMEMAX;
}
for (i = 0; i < len; i++) {
if (name[i] < ' ' || name[i] == ':'
@ -508,7 +508,7 @@ affs_check_name(const unsigned char *name, int len, bool notruncate)
int
affs_copy_name(unsigned char *bstr, struct dentry *dentry)
{
u32 len = min(dentry->d_name.len, 30u);
u32 len = min(dentry->d_name.len, AFFSNAMEMAX);
*bstr++ = len;
memcpy(bstr, dentry->d_name.name, len);

3
fs/affs/dir.c
View File

@ -114,7 +114,8 @@ affs_readdir(struct file *file, struct dir_context *ctx)
break;
}
namelen = min(AFFS_TAIL(sb, fh_bh)->name[0], (u8)30);
namelen = min(AFFS_TAIL(sb, fh_bh)->name[0],
(u8)AFFSNAMEMAX);
name = AFFS_TAIL(sb, fh_bh)->name + 1;
pr_debug("readdir(): dir_emit(\"%.*s\", ino=%u), hash=%d, f_pos=%llx\n",
namelen, name, ino, hash_pos, ctx->pos);

16
fs/affs/namei.c
View File

@ -72,7 +72,7 @@ __affs_hash_dentry(struct qstr *qstr, toupper_t toupper, bool notruncate)
return retval;
hash = init_name_hash();
len = min(qstr->len, 30u);
len = min(qstr->len, AFFSNAMEMAX);
for (; len > 0; name++, len--)
hash = partial_name_hash(toupper(*name), hash);
qstr->hash = end_name_hash(hash);
@ -115,10 +115,10 @@ static inline int __affs_compare_dentry(unsigned int len,
* If the names are longer than the allowed 30 chars,
* the excess is ignored, so their length may differ.
*/
if (len >= 30) {
if (name->len < 30)
if (len >= AFFSNAMEMAX) {
if (name->len < AFFSNAMEMAX)
return 1;
len = 30;
len = AFFSNAMEMAX;
} else if (len != name->len)
return 1;
@ -157,10 +157,10 @@ affs_match(struct dentry *dentry, const u8 *name2, toupper_t toupper)
const u8 *name = dentry->d_name.name;
int len = dentry->d_name.len;
if (len >= 30) {
if (*name2 < 30)
if (len >= AFFSNAMEMAX) {
if (*name2 < AFFSNAMEMAX)
return 0;
len = 30;
len = AFFSNAMEMAX;
} else if (len != *name2)
return 0;
@ -176,7 +176,7 @@ affs_hash_name(struct super_block *sb, const u8 *name, unsigned int len)
toupper_t toupper = affs_get_toupper(sb);
u32 hash;
hash = len = min(len, 30u);
hash = len = min(len, AFFSNAMEMAX);
for (; len > 0; len--)
hash = (hash * 13 + toupper(*name++)) & 0x7ff;

2
fs/affs/super.c
View File

@ -584,7 +584,7 @@ affs_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_bavail = free;
buf->f_fsid.val[0] = (u32)id;
buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = 30;
buf->f_namelen = AFFSNAMEMAX;
return 0;
}