9p: Modify struct 9p_fid to use a kuid_t not a uid_t

Change struct 9p_fid and it's associated functions to
use kuid_t's instead of uid_t.

Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@gmail.com>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

3 files changed, 11 insertions, 10 deletions

diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index da8eefbe830d..afd4724b2d92 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -74,19 +74,20 @@ int v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid)
  *
  */
 
-static struct p9_fid *v9fs_fid_find(struct dentry *dentry, u32 uid, int any)
+static struct p9_fid *v9fs_fid_find(struct dentry *dentry, kuid_t uid, int any)
 {
         struct v9fs_dentry *dent;
         struct p9_fid *fid, *ret;
 
         p9_debug(P9_DEBUG_VFS, " dentry: %s (%p) uid %d any %d\n",
-                 dentry->d_name.name, dentry, uid, any);
+                 dentry->d_name.name, dentry, from_kuid(&init_user_ns, uid),
+                 any);
         dent = (struct v9fs_dentry *) dentry->d_fsdata;
         ret = NULL;
         if (dent) {
                 spin_lock(&dent->lock);
                 list_for_each_entry(fid, &dent->fidlist, dlist) {
-                        if (any || fid->uid == uid) {
+                        if (any || uid_eq(fid->uid, uid)) {
                                 ret = fid;
                                 break;
                         }
@@ -126,7 +127,7 @@ err_out:
 }
 
 static struct p9_fid *v9fs_fid_lookup_with_uid(struct dentry *dentry,
-                                               uid_t uid, int any)
+                                               kuid_t uid, int any)
 {
         struct dentry *ds;
         char **wnames, *uname;
@@ -233,7 +234,7 @@ err_out:
 
 struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
 {
-        uid_t uid;
+        kuid_t uid;
         int  any, access;
         struct v9fs_session_info *v9ses;
 
@@ -253,7 +254,7 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
                 break;
 
         default:
-                uid = ~0;
+                uid = INVALID_UID;
                 any = 0;
                 break;
         }
@@ -272,7 +273,7 @@ struct p9_fid *v9fs_fid_clone(struct dentry *dentry)
         return ret;
 }
 
-static struct p9_fid *v9fs_fid_clone_with_uid(struct dentry *dentry, uid_t uid)
+static struct p9_fid *v9fs_fid_clone_with_uid(struct dentry *dentry, kuid_t uid)
 {
         struct p9_fid *fid, *ret;
 
@@ -289,7 +290,7 @@ struct p9_fid *v9fs_writeback_fid(struct dentry *dentry)
         int err;
         struct p9_fid *fid;
 
-        fid = v9fs_fid_clone_with_uid(dentry, 0);
+        fid = v9fs_fid_clone_with_uid(dentry, GLOBAL_ROOT_UID);
         if (IS_ERR(fid))
                 goto error_out;
         /*
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 4e0bd9d62ed6..d64967cbd73e 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -387,7 +387,7 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
         if ((v9ses->flags & V9FS_ACCESS_MASK) == V9FS_ACCESS_SINGLE)
                 fid->uid = v9ses->uid;
         else
-                fid->uid = ~0;
+                fid->uid = INVALID_UID;
 
 #ifdef CONFIG_9P_FSCACHE
         /* register the session for caching */
diff --git a/include/net/9p/client.h b/include/net/9p/client.h
index 6b031ab6e4db..5ff70f433e87 100644
--- a/include/net/9p/client.h
+++ b/include/net/9p/client.h
@@ -187,7 +187,7 @@ struct p9_fid {
         int mode;
         struct p9_qid qid;
         u32 iounit;
-        uid_t uid;
+        kuid_t uid;
 
         void *rdir;