userns: Convert adfs to use kuid and kgid where appropriate

[karo-tx-linux.git] / fs / adfs / super.c

diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index bdaec92353c2cc0e5e876115ee7a474e45c0ba4b..22a0d7ed5fa1c45bf412d42346f7c003c929185a 100644 (file)
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -15,6 +15,7 @@
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/statfs.h>
+#include <linux/user_namespace.h>
 #include "adfs.h"
 #include "dir_f.h"
 #include "dir_fplus.h"
@@ -130,10 +131,10 @@ static int adfs_show_options(struct seq_file *seq, struct dentry *root)
 {
        struct adfs_sb_info *asb = ADFS_SB(root->d_sb);
 
-       if (asb->s_uid != 0)
-               seq_printf(seq, ",uid=%u", asb->s_uid);
-       if (asb->s_gid != 0)
-               seq_printf(seq, ",gid=%u", asb->s_gid);
+       if (!uid_eq(asb->s_uid, GLOBAL_ROOT_UID))
+               seq_printf(seq, ",uid=%u", from_kuid_munged(&init_user_ns, asb->s_uid));
+       if (!gid_eq(asb->s_gid, GLOBAL_ROOT_GID))
+               seq_printf(seq, ",gid=%u", from_kgid_munged(&init_user_ns, asb->s_gid));
        if (asb->s_owner_mask != ADFS_DEFAULT_OWNER_MASK)
                seq_printf(seq, ",ownmask=%o", asb->s_owner_mask);
        if (asb->s_other_mask != ADFS_DEFAULT_OTHER_MASK)
@@ -175,12 +176,16 @@ static int parse_options(struct super_block *sb, char *options)
                case Opt_uid:
                        if (match_int(args, &option))
                                return -EINVAL;
-                       asb->s_uid = option;
+                       asb->s_uid = make_kuid(current_user_ns(), option);
+                       if (!uid_valid(asb->s_uid))
+                               return -EINVAL;
                        break;
                case Opt_gid:
                        if (match_int(args, &option))
                                return -EINVAL;
-                       asb->s_gid = option;
+                       asb->s_gid = make_kgid(current_user_ns(), option);
+                       if (!gid_valid(asb->s_gid))
+                               return -EINVAL;
                        break;
                case Opt_ownmask:
                        if (match_octal(args, &option))
@@ -369,8 +374,8 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
        sb->s_fs_info = asb;
 
        /* set default options */
-       asb->s_uid = 0;
-       asb->s_gid = 0;
+       asb->s_uid = GLOBAL_ROOT_UID;
+       asb->s_gid = GLOBAL_ROOT_GID;
        asb->s_owner_mask = ADFS_DEFAULT_OWNER_MASK;
        asb->s_other_mask = ADFS_DEFAULT_OTHER_MASK;
        asb->s_ftsuffix = 0;