mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-04-06 06:43:13 -04:00
Code Issues Packages Projects Releases Wiki Activity

cifs: fix reconnect with SMB1 UNIX Extensions

Browse Source 
When mounting with the SMB1 Unix Extensions (e.g. mounts
to Samba with vers=1.0), reconnects no longer reset the
Unix Extensions (SetFSInfo SET_FILE_UNIX_BASIC) after tcon so most
operations (e.g. stat, ls, open, statfs) will fail continuously
with:
        "Operation not supported"
if the connection ever resets (e.g. due to brief network disconnect)

Cc: stable@vger.kernel.org
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Steve French
2024-07-22 23:40:08 -05:00
parent 193cc89ea0
commit a214384ce2
1 changed files with 16 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
fs/smb/client/connect.c
View File

@@ -3686,6 +3686,7 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx)
}
#endif
#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
/*
* Issue a TREE_CONNECT request.
*/
@@ -3807,11 +3808,25 @@ CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
else
tcon->Flags = 0;
cifs_dbg(FYI, "Tcon flags: 0x%x\n", tcon->Flags);
}
/*
* reset_cifs_unix_caps calls QFSInfo which requires
* need_reconnect to be false, but we would not need to call
* reset_caps if this were not a reconnect case so must check
* need_reconnect flag here. The caller will also clear
* need_reconnect when tcon was successful but needed to be
* cleared earlier in the case of unix extensions reconnect
*/
if (tcon->need_reconnect && tcon->unix_ext) {
cifs_dbg(FYI, "resetting caps for %s\n", tcon->tree_name);
tcon->need_reconnect = false;
reset_cifs_unix_caps(xid, tcon, NULL, NULL);
}
}
cifs_buf_release(smb_buffer);
return rc;
}
#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
static void delayed_free(struct rcu_head *p)
{