[PATCH 5.15 13/91] afs: Fix setting of mtime when creating a file/dir/symlink

[PATCH 5.15 13/91] afs: Fix setting of mtime when creating a file/dir/symlink

[Greg Kroah-Hartman]

From: David Howells <dhowells@redhat.com>

[ Upstream commit a27648c742104a833a01c54becc24429898d85bf ]

kafs incorrectly passes a zero mtime (ie. 1st Jan 1970) to the server when
creating a file, dir or symlink because the mtime recorded in the
afs_operation struct gets passed to the server by the marshalling routines,
but the afs_mkdir(), afs_create() and afs_symlink() functions don't set it.

This gets masked if a file or directory is subsequently modified.

Fix this by filling in op->mtime before calling the create op.

Fixes: e49c7b2f6de7 ("afs: Build an abstraction around an "operation" concept")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeffrey Altman <jaltman@auristor.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/afs/dir.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 948a808a964d1..cec18f9f8bd7a 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -1394,6 +1394,7 @@ static int afs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
 	op->dentry	= dentry;
 	op->create.mode	= S_IFDIR | mode;
 	op->create.reason = afs_edit_dir_for_mkdir;
+	op->mtime	= current_time(dir);
 	op->ops		= &afs_mkdir_operation;
 	return afs_do_sync_operation(op);
 }
@@ -1697,6 +1698,7 @@ static int afs_create(struct user_namespace *mnt_userns, struct inode *dir,
 	op->dentry	= dentry;
 	op->create.mode	= S_IFREG | mode;
 	op->create.reason = afs_edit_dir_for_create;
+	op->mtime	= current_time(dir);
 	op->ops		= &afs_create_operation;
 	return afs_do_sync_operation(op);
 
@@ -1832,6 +1834,7 @@ static int afs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
 	op->ops			= &afs_symlink_operation;
 	op->create.reason	= afs_edit_dir_for_symlink;
 	op->create.symlink	= content;
+	op->mtime		= current_time(dir);
 	return afs_do_sync_operation(op);
 
 error:
-- 
2.39.2