userns: Convert hfsplus to use kuid and kgid where appropriate

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

4 files changed, 20 insertions, 11 deletions

diff --git a/fs/hfsplus/catalog.c b/fs/hfsplus/catalog.c
index ec2a9c23f0c9..798d9c4c5e71 100644
--- a/fs/hfsplus/catalog.c
+++ b/fs/hfsplus/catalog.c
@@ -80,8 +80,8 @@ void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms)
 
         perms->userflags = HFSPLUS_I(inode)->userflags;
         perms->mode = cpu_to_be16(inode->i_mode);
-        perms->owner = cpu_to_be32(inode->i_uid);
-        perms->group = cpu_to_be32(inode->i_gid);
+        perms->owner = cpu_to_be32(i_uid_read(inode));
+        perms->group = cpu_to_be32(i_gid_read(inode));
 
         if (S_ISREG(inode->i_mode))
                 perms->dev = cpu_to_be32(inode->i_nlink);
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index 558dbb463a4e..c571de224b15 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -149,8 +149,8 @@ struct hfsplus_sb_info {
         u32 type;
 
         umode_t umask;
-        uid_t uid;
-        gid_t gid;
+        kuid_t uid;
+        kgid_t gid;
 
         int part, session;
         unsigned long flags;
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index 3d8b4a675ba0..2172aa5976f5 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -233,12 +233,12 @@ static void hfsplus_get_perms(struct inode *inode,
 
         mode = be16_to_cpu(perms->mode);
 
-        inode->i_uid = be32_to_cpu(perms->owner);
-        if (!inode->i_uid && !mode)
+        i_uid_write(inode, be32_to_cpu(perms->owner));
+        if (!i_uid_read(inode) && !mode)
                 inode->i_uid = sbi->uid;
 
-        inode->i_gid = be32_to_cpu(perms->group);
-        if (!inode->i_gid && !mode)
+        i_gid_write(inode, be32_to_cpu(perms->group));
+        if (!i_gid_read(inode) && !mode)
                 inode->i_gid = sbi->gid;
 
         if (dir) {
diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
index 06fa5618600c..ed257c671615 100644
--- a/fs/hfsplus/options.c
+++ b/fs/hfsplus/options.c
@@ -135,14 +135,22 @@ int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi)
                                 printk(KERN_ERR "hfs: uid requires an argument\n");
                                 return 0;
                         }
-                        sbi->uid = (uid_t)tmp;
+                        sbi->uid = make_kuid(current_user_ns(), (uid_t)tmp);
+                        if (!uid_valid(sbi->uid)) {
+                                printk(KERN_ERR "hfs: invalid uid specified\n");
+                                return 0;
+                        }
                         break;
                 case opt_gid:
                         if (match_int(&args[0], &tmp)) {
                                 printk(KERN_ERR "hfs: gid requires an argument\n");
                                 return 0;
                         }
-                        sbi->gid = (gid_t)tmp;
+                        sbi->gid = make_kgid(current_user_ns(), (gid_t)tmp);
+                        if (!gid_valid(sbi->gid)) {
+                                printk(KERN_ERR "hfs: invalid gid specified\n");
+                                return 0;
+                        }
                         break;
                 case opt_part:
                         if (match_int(&args[0], &sbi->part)) {
@@ -215,7 +223,8 @@ int hfsplus_show_options(struct seq_file *seq, struct dentry *root)
         if (sbi->type != HFSPLUS_DEF_CR_TYPE)
                 seq_printf(seq, ",type=%.4s", (char *)&sbi->type);
         seq_printf(seq, ",umask=%o,uid=%u,gid=%u", sbi->umask,
-                sbi->uid, sbi->gid);
+                        from_kuid_munged(&init_user_ns, sbi->uid),
+                        from_kgid_munged(&init_user_ns, sbi->gid));
         if (sbi->part >= 0)
                 seq_printf(seq, ",part=%u", sbi->part);
         if (sbi->session >= 0)