POSIX extensions require SMB3.1.1 (so improve the error
message when vers=3.0, 2.1 or 2.0 is specified on mount)
--
Thanks,
Steve
From d0cbe56a7d5ac170f6cf3757ef5a14dd854e7da9 Mon Sep 17 00:00:00 2001
From: Steve French <stfrench@xxxxxxxxxxxxx>
Date: Sun, 6 Feb 2022 18:59:57 -0600
Subject: [PATCH] [smb3] improve error message when mount options conflict with
posix
POSIX extensions require SMB3.1.1 (so improve the error
message when vers=3.0, 2.1 or 2.0 is specified on mount)
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
---
fs/cifs/connect.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 0b742bd50642..cff6c01feae2 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -2340,10 +2340,19 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb3_fs_context *ctx)
if (ses->server->posix_ext_supported) {
tcon->posix_extensions = true;
pr_warn_once("SMB3.11 POSIX Extensions are experimental\n");
- } else {
+ } else if ((ses->server->vals->protocol_id == SMB311_PROT_ID) ||
+ (strcmp(ses->server->vals->version_string,
+ SMB3ANY_VERSION_STRING) == 0) ||
+ (strcmp(ses->server->vals->version_string,
+ SMBDEFAULT_VERSION_STRING) == 0)) {
cifs_dbg(VFS, "Server does not support mounting with posix SMB3.11 extensions\n");
rc = -EOPNOTSUPP;
goto out_fail;
+ } else {
+ cifs_dbg(VFS, "Check vers= mount option. SMB3.11 "
+ "disabled but required for POSIX extensions\n");
+ rc = -EOPNOTSUPP;
+ goto out_fail;
}
}
--
2.32.0
