From 555b2c3da1fc3d1c5cc133e9353354c40fbfe336 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Fri, 21 Jun 2019 18:27:13 -0500 Subject: [PATCH] quota: honor quota type in Q_XGETQSTAT[V] calls The code in quota_getstate and quota_getstatev is strange; it says the returned fs_quota_stat[v] structure has room for only one type of time limits, so fills it in with the first enabled quota, even though every quotactl command must have a type sent in by the user. Instead of just picking the first enabled quota, fill in the reply with the timers for the quota type that was actually requested. Reviewed-by: Christoph Hellwig Signed-off-by: Eric Sandeen Signed-off-by: Jan Kara --- fs/quota/quota.c | 38 ++++++++++++-------------------------- 1 file changed, 12 insertions(+), 26 deletions(-) diff --git a/fs/quota/quota.c b/fs/quota/quota.c index fd5dd806f1b9..cb13fb76dbee 100644 --- a/fs/quota/quota.c +++ b/fs/quota/quota.c @@ -331,9 +331,9 @@ static int quota_state_to_flags(struct qc_state *state) return flags; } -static int quota_getstate(struct super_block *sb, struct fs_quota_stat *fqs) +static int quota_getstate(struct super_block *sb, int type, + struct fs_quota_stat *fqs) { - int type; struct qc_state state; int ret; @@ -349,14 +349,7 @@ static int quota_getstate(struct super_block *sb, struct fs_quota_stat *fqs) if (!fqs->qs_flags) return -ENOSYS; fqs->qs_incoredqs = state.s_incoredqs; - /* - * GETXSTATE quotactl has space for just one set of time limits so - * report them for the first enabled quota type - */ - for (type = 0; type < MAXQUOTAS; type++) - if (state.s_state[type].flags & QCI_ACCT_ENABLED) - break; - BUG_ON(type == MAXQUOTAS); + fqs->qs_btimelimit = state.s_state[type].spc_timelimit; fqs->qs_itimelimit = state.s_state[type].ino_timelimit; fqs->qs_rtbtimelimit = state.s_state[type].rt_spc_timelimit; @@ -391,22 +384,22 @@ static int quota_getstate(struct super_block *sb, struct fs_quota_stat *fqs) return 0; } -static int quota_getxstate(struct super_block *sb, void __user *addr) +static int quota_getxstate(struct super_block *sb, int type, void __user *addr) { struct fs_quota_stat fqs; int ret; if (!sb->s_qcop->get_state) return -ENOSYS; - ret = quota_getstate(sb, &fqs); + ret = quota_getstate(sb, type, &fqs); if (!ret && copy_to_user(addr, &fqs, sizeof(fqs))) return -EFAULT; return ret; } -static int quota_getstatev(struct super_block *sb, struct fs_quota_statv *fqs) +static int quota_getstatev(struct super_block *sb, int type, + struct fs_quota_statv *fqs) { - int type; struct qc_state state; int ret; @@ -422,14 +415,7 @@ static int quota_getstatev(struct super_block *sb, struct fs_quota_statv *fqs) if (!fqs->qs_flags) return -ENOSYS; fqs->qs_incoredqs = state.s_incoredqs; - /* - * GETXSTATV quotactl has space for just one set of time limits so - * report them for the first enabled quota type - */ - for (type = 0; type < MAXQUOTAS; type++) - if (state.s_state[type].flags & QCI_ACCT_ENABLED) - break; - BUG_ON(type == MAXQUOTAS); + fqs->qs_btimelimit = state.s_state[type].spc_timelimit; fqs->qs_itimelimit = state.s_state[type].ino_timelimit; fqs->qs_rtbtimelimit = state.s_state[type].rt_spc_timelimit; @@ -455,7 +441,7 @@ static int quota_getstatev(struct super_block *sb, struct fs_quota_statv *fqs) return 0; } -static int quota_getxstatev(struct super_block *sb, void __user *addr) +static int quota_getxstatev(struct super_block *sb, int type, void __user *addr) { struct fs_quota_statv fqs; int ret; @@ -474,7 +460,7 @@ static int quota_getxstatev(struct super_block *sb, void __user *addr) default: return -EINVAL; } - ret = quota_getstatev(sb, &fqs); + ret = quota_getstatev(sb, type, &fqs); if (!ret && copy_to_user(addr, &fqs, sizeof(fqs))) return -EFAULT; return ret; @@ -744,9 +730,9 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, case Q_XQUOTARM: return quota_rmxquota(sb, addr); case Q_XGETQSTAT: - return quota_getxstate(sb, addr); + return quota_getxstate(sb, type, addr); case Q_XGETQSTATV: - return quota_getxstatev(sb, addr); + return quota_getxstatev(sb, type, addr); case Q_XSETQLIM: return quota_setxquota(sb, type, id, addr); case Q_XGETQUOTA: