diff options
| author | Steve French <stfrench@microsoft.com> | 2018-06-18 14:01:59 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-15 09:46:54 +0200 |
| commit | 813cbe22dc04e9661aca291857982448edbfa8bd (patch) | |
| tree | d96a00bba9711c7a526bb620d9cb66012962c936 /fs | |
| parent | c2704b5e46882d7b5cf4600187523f699efd41f5 (diff) | |
smb3: if server does not support posix do not allow posix mount option
[ Upstream commit 8505c8bfd85a260c9dc5c47e15bd8c5357fcbcd2 ]
If user specifies "posix" on an SMB3.11 mount, then fail the mount
if server does not return the POSIX negotiate context indicating
support for posix.
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/connect.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 5df2c0698cda..9d02563b2147 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -3031,11 +3031,15 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) } #ifdef CONFIG_CIFS_SMB311 - if ((volume_info->linux_ext) && (ses->server->posix_ext_supported)) { - if (ses->server->vals->protocol_id == SMB311_PROT_ID) { + if (volume_info->linux_ext) { + if (ses->server->posix_ext_supported) { tcon->posix_extensions = true; printk_once(KERN_WARNING "SMB3.11 POSIX Extensions are experimental\n"); + } else { + cifs_dbg(VFS, "Server does not support mounting with posix SMB3.11 extensions.\n"); + rc = -EOPNOTSUPP; + goto out_fail; } } #endif /* 311 */ |