cifs: display addr and prefixpath options in /proc/mounts

Have cifs_show_options display the addr and prefixpath options in
/proc/mounts. Reduce struct dereferencing by adding some local
variables.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 32 insertions, 12 deletions

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index d9cf467309e8..7f87066ce29f 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -337,39 +337,59 @@ static int
 cifs_show_options(struct seq_file *s, struct vfsmount *m)
 {
         struct cifs_sb_info *cifs_sb;
+        struct cifsTconInfo *tcon;
+        struct TCP_Server_Info *server;
 
         cifs_sb = CIFS_SB(m->mnt_sb);
 
         if (cifs_sb) {
-                if (cifs_sb->tcon) {
+                tcon = cifs_sb->tcon;
+                if (tcon) {
 /* BB add prepath to mount options displayed */
                         seq_printf(s, ",unc=%s", cifs_sb->tcon->treeName);
-                        if (cifs_sb->tcon->ses) {
-                                if (cifs_sb->tcon->ses->userName)
+                        if (tcon->ses) {
+                                if (tcon->ses->userName)
                                         seq_printf(s, ",username=%s",
-                                           cifs_sb->tcon->ses->userName);
-                                if (cifs_sb->tcon->ses->domainName)
+                                           tcon->ses->userName);
+                                if (tcon->ses->domainName)
                                         seq_printf(s, ",domain=%s",
-                                           cifs_sb->tcon->ses->domainName);
+                                           tcon->ses->domainName);
+                                server = tcon->ses->server;
+                                if (server) {
+                                        seq_printf(s, ",addr=");
+                                        switch (server->addr.sockAddr6.
+                                                sin6_family) {
+                                        case AF_INET6:
+                                                seq_printf(s, NIP6_FMT,
+                                                           NIP6(server->addr.sockAddr6.sin6_addr));
+                                                break;
+                                        case AF_INET:
+                                                seq_printf(s, NIPQUAD_FMT,
+                                                           NIPQUAD(server->addr.sockAddr.sin_addr.s_addr));
+                                                break;
+                                        }
+                                }
                         }
                         if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) ||
-                           !(cifs_sb->tcon->unix_ext))
+                           !(tcon->unix_ext))
                                 seq_printf(s, ",uid=%d", cifs_sb->mnt_uid);
                         if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) ||
-                           !(cifs_sb->tcon->unix_ext))
+                           !(tcon->unix_ext))
                                 seq_printf(s, ",gid=%d", cifs_sb->mnt_gid);
-                        if (!cifs_sb->tcon->unix_ext) {
+                        if (!tcon->unix_ext) {
                                 seq_printf(s, ",file_mode=0%o,dir_mode=0%o",
                                            cifs_sb->mnt_file_mode,
                                            cifs_sb->mnt_dir_mode);
                         }
-                        if (cifs_sb->tcon->seal)
+                        if (tcon->seal)
                                 seq_printf(s, ",seal");
-                        if (cifs_sb->tcon->nocase)
+                        if (tcon->nocase)
                                 seq_printf(s, ",nocase");
-                        if (cifs_sb->tcon->retry)
+                        if (tcon->retry)
                                 seq_printf(s, ",hard");
                 }
+                if (cifs_sb->prepath)
+                        seq_printf(s, ",prepath=%s", cifs_sb->prepath);
                 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
                         seq_printf(s, ",posixpaths");
                 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)