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Commit 522be1fd authored by Namjae Jeon's avatar Namjae Jeon Committed by lixiang
Browse files

exfat: fix incorrect update of stream entry in __exfat_truncate() 



At truncate, there is a problem of incorrect updating in the file entry
pointer instead of stream entry. This will cause the problem of
overwriting the time field of the file entry to new_size. Fix it to
update stream entry.

Fixes: 98d917047e8b ("exfat: add file operations")
Cc: stable@vger.kernel.org # v5.7
Signed-off-by: default avatarNamjae Jeon <namjae.jeon@samsung.com>
Git-commit: 29bbb14bfc80dd760b07d2be0a27e610562982e3
Git-repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: default avatarlixiang <lixiang@codeaurora.org>
parent 39e181c7

fs/exfat/file.c

+4 −4
Original line number Diff line number Diff line
@@ -171,11 +171,11 @@ int __exfat_truncate(struct inode *inode, loff_t new_size) 


		/* File size should be zero if there is no cluster allocated */

		if (ei->start_clu == EXFAT_EOF_CLUSTER) {

			ep->dentry.stream.valid_size = 0;

			ep->dentry.stream.size = 0;

			ep2->dentry.stream.valid_size = 0;

			ep2->dentry.stream.size = 0;

		} else {

			ep->dentry.stream.valid_size = cpu_to_le64(new_size);

			ep->dentry.stream.size = ep->dentry.stream.valid_size;

			ep2->dentry.stream.valid_size = cpu_to_le64(new_size);

			ep2->dentry.stream.size = ep->dentry.stream.valid_size;

		}



		if (new_size == 0) {