6.1-stable review patch. If anyone has any objections, please let me know.
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From: Steve French stfrench@microsoft.com
commit a214384ce26b6111ea8c8d58fa82a1ca63996c38 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/smb/client/connect.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-)
--- a/fs/smb/client/connect.c +++ b/fs/smb/client/connect.c @@ -3975,6 +3975,7 @@ error: } #endif
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY /* * Issue a TREE_CONNECT request. */ @@ -4096,11 +4097,25 @@ CIFSTCon(const unsigned int xid, struct 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) {