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| author | OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> | 2011-04-12 21:08:39 +0900 |
|---|---|---|
| committer | OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> | 2011-04-12 21:12:50 +0900 |
| commit | f68e542f3478147986a9c8958942ec649dc06201 (patch) | |
| tree | 90b4c8b6a087992a67a15e508b25cc29b14f30fb /fs/fat/inode.c | |
| parent | 869f58c0cdba3ae6880ab6113617e62672198773 (diff) | |
| download | lwn-f68e542f3478147986a9c8958942ec649dc06201.tar.gz lwn-f68e542f3478147986a9c8958942ec649dc06201.zip | |
fat: Fix statfs->f_namelen
pathconf(, _PC_NAME_MAX) is too small for long Unicode filename on fat.
255 as max filename size on fat is Unicode UTF-16 characters.
it's not byte size.
https://bugzilla.kernel.org/show_bug.cgi?id=16469
To fix it, this returns "len * NLS_MAX_CHARSET_SIZE" instead.
Reported-by: Takumi Asaki <takumi.asaki@nokia.com>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Diffstat (limited to 'fs/fat/inode.c')
| -rw-r--r-- | fs/fat/inode.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 7a6c819893f2..cb8d8391ac0b 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -581,7 +581,8 @@ 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 ? FAT_LFN_LEN : 12; + buf->f_namelen = + (sbi->options.isvfat ? FAT_LFN_LEN : 12) * NLS_MAX_CHARSET_SIZE; return 0; } |