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fat: Fix stat->f_namelen

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I found that the length of a file name when created cannot exceed 255
characters, yet, pathconf(), via statfs(), returns the maximum as 260.

Signed-off-by: Kevin Dankwardt <[email protected]>
Signed-off-by: OGAWA Hirofumi <[email protected]>
This commit is contained in:
Kevin Dankwardt 2010-02-10 23:43:40 +09:00 • committed by OGAWA Hirofumi
commit eeb5b4ae81
3 changed files with 6 additions and 5 deletions
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2
fs/fat/inode.c
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@ -558,7 +558,7 @@ static int fat_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_bavail = sbi->free_clusters;
buf->f_fsid.val[0] = (u32)id;
buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = sbi->options.isvfat ? 260 : 12;
buf->f_namelen = sbi->options.isvfat ? FAT_LFN_LEN : 12;
return 0;
}

6
fs/fat/namei_vfat.c
View file

@ -502,14 +502,14 @@ xlate_to_uni(const unsigned char *name, int len, unsigned char *outname,
*outlen = utf8s_to_utf16s(name, len, (wchar_t *)outname);
if (*outlen < 0)
return *outlen;
else if (*outlen > 255)
else if (*outlen > FAT_LFN_LEN)
return -ENAMETOOLONG;
op = &outname[*outlen * sizeof(wchar_t)];
} else {
if (nls) {
for (i = 0, ip = name, op = outname, *outlen = 0;
i < len && *outlen <= 255;
i < len && *outlen <= FAT_LFN_LEN;
*outlen += 1)
{
if (escape && (*ip == ':')) {
@ -549,7 +549,7 @@ xlate_to_uni(const unsigned char *name, int len, unsigned char *outname,
return -ENAMETOOLONG;
} else {
for (i = 0, ip = name, op = outname, *outlen = 0;
i < len && *outlen <= 255;
i < len && *outlen <= FAT_LFN_LEN;
i++, *outlen += 1)
{
*op++ = *ip++;