Am Mon, Mar 13, 2023 at 04:28:37PM +0100 schrieb Volker Lendecke:
> Here's the updated version.
>
> Sorry for the noise,
It's not my day today, V3....
Volker
From 41e6250b60b5ba3d262b50f97e8b01df67ccecc4 Mon Sep 17 00:00:00 2001
From: Volker Lendecke <vl@xxxxxxxxx>
Date: Mon, 13 Mar 2023 16:09:54 +0100
Subject: [PATCH] cifs: Fix smb2_set_path_size()
If cifs_get_writable_path() finds a writable file, smb2_compound_op()
must use that file's FID and not the COMPOUND_FID.
Signed-off-by: Volker Lendecke <vl@xxxxxxxxx>
---
fs/cifs/smb2inode.c | 31 ++++++++++++++++++++++++-------
1 file changed, 24 insertions(+), 7 deletions(-)
diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index 9b956294e864..8dd3791b5c53 100644
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -234,15 +234,32 @@ static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
size[0] = 8; /* sizeof __le64 */
data[0] = ptr;
- rc = SMB2_set_info_init(tcon, server,
- &rqst[num_rqst], COMPOUND_FID,
- COMPOUND_FID, current->tgid,
- FILE_END_OF_FILE_INFORMATION,
- SMB2_O_INFO_FILE, 0, data, size);
+ if (cfile) {
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst],
+ cfile->fid.persistent_fid,
+ cfile->fid.volatile_fid,
+ current->tgid,
+ FILE_END_OF_FILE_INFORMATION,
+ SMB2_O_INFO_FILE, 0,
+ data, size);
+ } else {
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst],
+ COMPOUND_FID,
+ COMPOUND_FID,
+ current->tgid,
+ FILE_END_OF_FILE_INFORMATION,
+ SMB2_O_INFO_FILE, 0,
+ data, size);
+ if (!rc) {
+ smb2_set_next_command(tcon, &rqst[num_rqst]);
+ smb2_set_related(&rqst[num_rqst]);
+ }
+ }
if (rc)
goto finished;
- smb2_set_next_command(tcon, &rqst[num_rqst]);
- smb2_set_related(&rqst[num_rqst++]);
+ num_rqst++;
trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
break;
case SMB2_OP_SET_INFO:
--
2.30.2
