diff options
| author | David Woodhouse <David.Woodhouse@intel.com> | 2012-10-09 15:03:21 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-10-09 15:04:25 +0100 |
| commit | ffe315012510165ce82e4dd4767f0a5dba9edbf7 (patch) | |
| tree | f601cd980af9d0ced5ca9aedecef4fa0d2ca0e15 /fs/quota/quota.c | |
| parent | e2d3a35ee427aaba99b6c68a56609ce276c51270 (diff) | |
| parent | 4a8e43feeac7996b8de2d5b2823e316917493df4 (diff) | |
Merge tag 'disintegrate-mtd-20121009' of git://git.infradead.org/users/dhowells/linux-headers
UAPI Disintegration 2012-10-09
Conflicts:
MAINTAINERS
arch/arm/configs/bcmring_defconfig
arch/arm/mach-imx/clk-imx51-imx53.c
drivers/mtd/nand/Kconfig
drivers/mtd/nand/bcm_umi_nand.c
drivers/mtd/nand/nand_bcm_umi.h
drivers/mtd/nand/orion_nand.c
Diffstat (limited to 'fs/quota/quota.c')
| -rw-r--r-- | fs/quota/quota.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/fs/quota/quota.c b/fs/quota/quota.c index 6f155788cbc6..ff0135d6bc51 100644 --- a/fs/quota/quota.c +++ b/fs/quota/quota.c @@ -32,8 +32,8 @@ static int check_quotactl_permission(struct super_block *sb, int type, int cmd, /* allow to query information for dquots we "own" */ case Q_GETQUOTA: case Q_XGETQUOTA: - if ((type == USRQUOTA && current_euid() == id) || - (type == GRPQUOTA && in_egroup_p(id))) + if ((type == USRQUOTA && uid_eq(current_euid(), make_kuid(current_user_ns(), id))) || + (type == GRPQUOTA && in_egroup_p(make_kgid(current_user_ns(), id)))) break; /*FALLTHROUGH*/ default: @@ -130,13 +130,17 @@ static void copy_to_if_dqblk(struct if_dqblk *dst, struct fs_disk_quota *src) static int quota_getquota(struct super_block *sb, int type, qid_t id, void __user *addr) { + struct kqid qid; struct fs_disk_quota fdq; struct if_dqblk idq; int ret; if (!sb->s_qcop->get_dqblk) return -ENOSYS; - ret = sb->s_qcop->get_dqblk(sb, type, id, &fdq); + qid = make_kqid(current_user_ns(), type, id); + if (!qid_valid(qid)) + return -EINVAL; + ret = sb->s_qcop->get_dqblk(sb, qid, &fdq); if (ret) return ret; copy_to_if_dqblk(&idq, &fdq); @@ -176,13 +180,17 @@ static int quota_setquota(struct super_block *sb, int type, qid_t id, { struct fs_disk_quota fdq; struct if_dqblk idq; + struct kqid qid; if (copy_from_user(&idq, addr, sizeof(idq))) return -EFAULT; if (!sb->s_qcop->set_dqblk) return -ENOSYS; + qid = make_kqid(current_user_ns(), type, id); + if (!qid_valid(qid)) + return -EINVAL; copy_from_if_dqblk(&fdq, &idq); - return sb->s_qcop->set_dqblk(sb, type, id, &fdq); + return sb->s_qcop->set_dqblk(sb, qid, &fdq); } static int quota_setxstate(struct super_block *sb, int cmd, void __user *addr) @@ -213,23 +221,31 @@ static int quota_setxquota(struct super_block *sb, int type, qid_t id, void __user *addr) { struct fs_disk_quota fdq; + struct kqid qid; if (copy_from_user(&fdq, addr, sizeof(fdq))) return -EFAULT; if (!sb->s_qcop->set_dqblk) return -ENOSYS; - return sb->s_qcop->set_dqblk(sb, type, id, &fdq); + qid = make_kqid(current_user_ns(), type, id); + if (!qid_valid(qid)) + return -EINVAL; + return sb->s_qcop->set_dqblk(sb, qid, &fdq); } static int quota_getxquota(struct super_block *sb, int type, qid_t id, void __user *addr) { struct fs_disk_quota fdq; + struct kqid qid; int ret; if (!sb->s_qcop->get_dqblk) return -ENOSYS; - ret = sb->s_qcop->get_dqblk(sb, type, id, &fdq); + qid = make_kqid(current_user_ns(), type, id); + if (!qid_valid(qid)) + return -EINVAL; + ret = sb->s_qcop->get_dqblk(sb, qid, &fdq); if (!ret && copy_to_user(addr, &fdq, sizeof(fdq))) return -EFAULT; return ret; |