linux/fs/exfat
Yuezhang Mo 6cb5d1a16a exfat: fix unexpected EOF while reading dir
If the position is not aligned with the dentry size, the return
value of readdir() will be NULL and errno is 0, which means the
end of the directory stream is reached.

If the position is aligned with dentry size, but there is no file
or directory at the position, exfat_readdir() will continue to
get dentry from the next dentry. So the dentry gotten by readdir()
may not be at the position.

After this commit, if the position is not aligned with the dentry
size, round the position up to the dentry size and continue to get
the dentry.

Fixes: ca06197382 ("exfat: add directory operations")
Cc: stable@vger.kernel.org # v5.7+
Reported-by: Wang Yugui <wangyugui@e16-tech.com>
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
2023-02-27 21:14:44 +09:00
..
balloc.c exfat: check if cluster num is valid 2022-05-23 11:17:30 +09:00
cache.c exfat: fix use of uninitialized spinlock on error path 2020-10-07 14:27:13 +09:00
dir.c exfat: fix unexpected EOF while reading dir 2023-02-27 21:14:44 +09:00
exfat_fs.h exfat: fix overflow in sector and cluster conversion 2022-12-13 20:17:11 +09:00
exfat_raw.h exfat: fix shift-out-of-bounds in exfat_fill_super() 2021-02-22 09:55:13 +09:00
fatent.c exfat: fix overflow for large capacity partition 2022-09-04 09:38:40 +09:00
file.c exfat: remove i_size_write() from __exfat_truncate() 2022-12-12 11:02:51 +09:00
inode.c Description for this pull request: 2022-12-15 18:14:21 -08:00
Kconfig exfat: Improve wording of EXFAT_DEFAULT_IOCHARSET config option 2020-06-09 16:48:39 +09:00
Makefile exfat: add Kconfig and Makefile 2020-03-05 21:00:40 -05:00
misc.c exfat: Expand exfat_err() and co directly to pr_*() macro 2022-08-01 10:14:07 +09:00
namei.c exfat: remove unnecessary arguments from exfat_find_dir_entry() 2022-12-12 11:02:50 +09:00
nls.c exfat: Drop superfluous new line for error messages 2022-08-01 10:14:07 +09:00
super.c exfat: Drop superfluous new line for error messages 2022-08-01 10:14:07 +09:00