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Commit 6a62a216 authored by Eric W. Biederman's avatar Eric W. Biederman
Browse files

userns: Convert s390 hypfs to use kuid and kgid where appropriate 



Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
parent 4a2ebb93

arch/s390/hypfs/inode.c

+14 −6
Original line number Diff line number Diff line
@@ -31,8 +31,8 @@ static struct dentry *hypfs_create_update_file(struct super_block *sb, 
					       struct dentry *dir);



struct hypfs_sb_info {

	uid_t uid;			/* uid used for files and dirs */

	gid_t gid;			/* gid used for files and dirs */

	kuid_t uid;			/* uid used for files and dirs */

	kgid_t gid;			/* gid used for files and dirs */

	struct dentry *update_file;	/* file to trigger update */

	time_t last_update;		/* last update time in secs since 1970 */

	struct mutex lock;		/* lock to protect update process */
@@ -229,6 +229,8 @@ static int hypfs_parse_options(char *options, struct super_block *sb) 
{

	char *str;

	substring_t args[MAX_OPT_ARGS];

	kuid_t uid;

	kgid_t gid;



	if (!options)

		return 0;
@@ -243,12 +245,18 @@ static int hypfs_parse_options(char *options, struct super_block *sb) 
		case opt_uid:

			if (match_int(&args[0], &option))

				return -EINVAL;

			hypfs_info->uid = option;

			uid = make_kuid(current_user_ns(), option);

			if (!uid_valid(uid))

				return -EINVAL;

			hypfs_info->uid = uid;

			break;

		case opt_gid:

			if (match_int(&args[0], &option))

				return -EINVAL;

			hypfs_info->gid = option;

			gid = make_kgid(current_user_ns(), option);

			if (!gid_valid(gid))

				return -EINVAL;

			hypfs_info->gid = gid;

			break;

		case opt_err:

		default:
@@ -263,8 +271,8 @@ static int hypfs_show_options(struct seq_file *s, struct dentry *root) 
{

	struct hypfs_sb_info *hypfs_info = root->d_sb->s_fs_info;



	seq_printf(s, ",uid=%u", hypfs_info->uid);

	seq_printf(s, ",gid=%u", hypfs_info->gid);

	seq_printf(s, ",uid=%u", from_kuid_munged(&init_user_ns, hypfs_info->uid));

	seq_printf(s, ",gid=%u", from_kgid_munged(&init_user_ns, hypfs_info->gid));

	return 0;

}