diff options
Diffstat (limited to 'fs/quota/quota.c')
| -rw-r--r-- | fs/quota/quota.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/fs/quota/quota.c b/fs/quota/quota.c index c7314f1771f5..dea86e8967ee 100644 --- a/fs/quota/quota.c +++ b/fs/quota/quota.c @@ -27,6 +27,7 @@ static int check_quotactl_permission(struct super_block *sb, int type, int cmd, case Q_SYNC: case Q_GETINFO: case Q_XGETQSTAT: + case Q_XGETQSTATV: case Q_XQUOTASYNC: break; /* allow to query information for dquots we "own" */ @@ -217,6 +218,31 @@ static int quota_getxstate(struct super_block *sb, void __user *addr) return ret; } +static int quota_getxstatev(struct super_block *sb, void __user *addr) +{ + struct fs_quota_statv fqs; + int ret; + + if (!sb->s_qcop->get_xstatev) + return -ENOSYS; + + memset(&fqs, 0, sizeof(fqs)); + if (copy_from_user(&fqs, addr, 1)) /* Just read qs_version */ + return -EFAULT; + + /* If this kernel doesn't support user specified version, fail */ + switch (fqs.qs_version) { + case FS_QSTATV_VERSION1: + break; + default: + return -EINVAL; + } + ret = sb->s_qcop->get_xstatev(sb, &fqs); + if (!ret && copy_to_user(addr, &fqs, sizeof(fqs))) + return -EFAULT; + return ret; +} + static int quota_setxquota(struct super_block *sb, int type, qid_t id, void __user *addr) { @@ -293,6 +319,8 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, return quota_setxstate(sb, cmd, addr); case Q_XGETQSTAT: return quota_getxstate(sb, addr); + case Q_XGETQSTATV: + return quota_getxstatev(sb, addr); case Q_XSETQLIM: return quota_setxquota(sb, type, id, addr); case Q_XGETQUOTA: @@ -317,6 +345,7 @@ static int quotactl_cmd_write(int cmd) case Q_GETINFO: case Q_SYNC: case Q_XGETQSTAT: + case Q_XGETQSTATV: case Q_XGETQUOTA: case Q_XQUOTASYNC: return 0; |