CIFS: Make CAP_* checks protocol independent

Since both CIFS and SMB2 use ses->capabilities (server->capabilities)
field but flags are different we should make such checks protocol
independent.

Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>

1 files changed, 12 insertions, 2 deletions

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 12b1176b87b0..bcdf4d4420f1 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -258,6 +258,9 @@ struct smb_version_values {
         size_t          max_header_size;
         size_t          read_rsp_size;
         __le16          lock_cmd;
+        unsigned int    cap_unix;
+        unsigned int    cap_nt_find;
+        unsigned int    cap_large_files;
 };
 
 #define HEADER_SIZE(server) (server->vals->header_size)
@@ -408,7 +411,7 @@ struct TCP_Server_Info {
         unsigned int max_vcs;   /* maximum number of smb sessions, at least
                                    those that can be specified uniquely with
                                    vcnumbers */
-        int capabilities; /* allow selective disabling of caps by smb sess */
+        unsigned int capabilities; /* selective disabling of caps by smb sess */
         int timeAdj;  /* Adjust for difference in server time zone in sec */
         __u64 CurrentMid;         /* multiplex id - rotating counter */
         char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */
@@ -532,7 +535,7 @@ struct cifs_ses {
         __u64 Suid;             /* remote smb uid  */
         uid_t linux_uid;        /* overriding owner of files on the mount */
         uid_t cred_uid;         /* owner of credentials */
-        int capabilities;
+        unsigned int capabilities;
         char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
                                 TCP names - will ipv6 and sctp addresses fit? */
         char *user_name;        /* must not be null except during init of sess
@@ -554,6 +557,13 @@ struct cifs_ses {
    which do not negotiate NTLM or POSIX dialects, but instead
    negotiate one of the older LANMAN dialects */
 #define CIFS_SES_LANMAN 8
+
+static inline bool
+cap_unix(struct cifs_ses *ses)
+{
+        return ses->server->vals->cap_unix & ses->capabilities;
+}
+
 /*
  * there is one of these for each connection to a resource on a particular
  * session