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userns: Convert adfs to use kuid and kgid where appropriate

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Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2012-02-07 15:58:38 -08:00
parent 9a11f4513c
commit c010d1ff4f
4 changed files with 17 additions and 13 deletions
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21
fs/adfs/super.c
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@ -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;