Yuezhang Mo 3a7845041e exfat: fix appending discontinuous clusters to empty file ... Eric Hong found that when using ftruncate to expand an empty file, exfat_ent_set() will fail if discontinuous clusters are allocated. The reason is that the empty file does not have a cluster chain, but exfat_ent_set() attempts to append the newly allocated cluster to the cluster chain. In addition, exfat_find_last_cluster() only supports finding the last cluster in a non-empty file. So this commit adds a check whether the file is empty. If the file is empty, exfat_find_last_cluster() and exfat_ent_set() are no longer called as they do not need to be called. Fixes: f55c096f62 ("exfat: do not zero the extended part") Reported-by: Eric Hong <erichong@qnap.com> Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>		2024-02-18 14:41:18 +09:00
..
balloc.c	exfat: using ffs instead of internal logic	2024-01-08 21:57:21 +09:00
cache.c	exfat: fix use of uninitialized spinlock on error path	2020-10-07 14:27:13 +09:00
dir.c	exfat: support create zero-size directory	2023-10-31 10:01:45 +09:00
exfat_fs.h	exfat: change to get file size from DataLength	2024-01-08 21:57:22 +09:00
exfat_raw.h	exfat: add ioctls for accessing attributes	2023-10-31 10:00:51 +09:00
fatent.c	exfat: fix the newly allocated clusters are not freed in error handling	2023-02-28 20:01:40 +09:00
file.c	exfat: fix appending discontinuous clusters to empty file	2024-02-18 14:41:18 +09:00
inode.c	exfat: fix zero the unwritten part for dio read	2024-01-18 23:01:51 +09:00
Kconfig	fs: add CONFIG_BUFFER_HEAD	2023-08-02 09:13:09 -06:00
Makefile	exfat: add Kconfig and Makefile	2020-03-05 21:00:40 -05:00
misc.c	exfat: convert to new timestamp accessors	2023-10-18 13:26:21 +02:00
namei.c	exfat: change to get file size from DataLength	2024-01-08 21:57:22 +09:00
nls.c	exfat: Drop superfluous new line for error messages	2022-08-01 10:14:07 +09:00
super.c	exfat: support create zero-size directory	2023-10-31 10:01:45 +09:00