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authorEric W. Biederman <ebiederm@xmission.com>2012-02-09 09:10:30 -0800
committerEric W. Biederman <ebiederm@xmission.com>2012-05-15 14:08:35 -0700
commita7c1938e22c02b008655524c766d185ae99d9d53 (patch)
treef6b862a5d187908007614e5537f4cd1e31a40df4 /fs/stat.c
parent52137abe1820196d956bfd51edebc571b3427deb (diff)
downloadlinux-a7c1938e22c02b008655524c766d185ae99d9d53.tar.bz2
userns: Convert stat to return values mapped from kuids and kgids
- Store uids and gids with kuid_t and kgid_t in struct kstat - Convert uid and gids to userspace usable values with from_kuid and from_kgid Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'fs/stat.c')
-rw-r--r--fs/stat.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/fs/stat.c b/fs/stat.c
index c733dc5753ae..31acca5f5a0c 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -137,8 +137,8 @@ static int cp_old_stat(struct kstat *stat, struct __old_kernel_stat __user * sta
tmp.st_nlink = stat->nlink;
if (tmp.st_nlink != stat->nlink)
return -EOVERFLOW;
- SET_UID(tmp.st_uid, stat->uid);
- SET_GID(tmp.st_gid, stat->gid);
+ SET_UID(tmp.st_uid, from_kuid_munged(current_user_ns(), stat->uid));
+ SET_GID(tmp.st_gid, from_kgid_munged(current_user_ns(), stat->gid));
tmp.st_rdev = old_encode_dev(stat->rdev);
#if BITS_PER_LONG == 32
if (stat->size > MAX_NON_LFS)
@@ -215,8 +215,8 @@ static int cp_new_stat(struct kstat *stat, struct stat __user *statbuf)
tmp.st_nlink = stat->nlink;
if (tmp.st_nlink != stat->nlink)
return -EOVERFLOW;
- SET_UID(tmp.st_uid, stat->uid);
- SET_GID(tmp.st_gid, stat->gid);
+ SET_UID(tmp.st_uid, from_kuid_munged(current_user_ns(), stat->uid));
+ SET_GID(tmp.st_gid, from_kgid_munged(current_user_ns(), stat->gid));
#if BITS_PER_LONG == 32
tmp.st_rdev = old_encode_dev(stat->rdev);
#else
@@ -350,8 +350,8 @@ static long cp_new_stat64(struct kstat *stat, struct stat64 __user *statbuf)
#endif
tmp.st_mode = stat->mode;
tmp.st_nlink = stat->nlink;
- tmp.st_uid = stat->uid;
- tmp.st_gid = stat->gid;
+ tmp.st_uid = from_kuid_munged(current_user_ns(), stat->uid);
+ tmp.st_gid = from_kgid_munged(current_user_ns(), stat->gid);
tmp.st_atime = stat->atime.tv_sec;
tmp.st_atime_nsec = stat->atime.tv_nsec;
tmp.st_mtime = stat->mtime.tv_sec;