237 lines
6.3 KiB
C
237 lines
6.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2019-2021 FUJITSU LIMITED. All rights reserved.
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* Author: Yang Xu <xuyang2018.jy@fujitsu.com>
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*/
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/*\
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* [Description]
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*
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* Tests basic error handling of the quotactl syscall with visible quota files
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* (cover two formats, vfsv0 and vfsv1):
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*
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* - EACCES when cmd is Q_QUOTAON and addr existed but not a regular file
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* - ENOENT when the file specified by special or addr does not exist
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* - EBUSY when cmd is Q_QUOTAON and another Q_QUOTAON had already been
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* performed
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* - EFAULT when addr or special is invalid
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* - EINVAL when cmd or type is invalid
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* - ENOTBLK when special is not a block device
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* - ESRCH when no disk quota is found for the indicated user and quotas have
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* not been turned on for this fs
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* - ESRCH when cmd is Q_QUOTAON, but the quota format was not found
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* - ESRCH when cmd is Q_GETNEXTQUOTA, but there is no ID greater than or
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* equal to id that has an active quota
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* - ERANGE when cmd is Q_SETQUOTA, but the specified limits are out of the
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* range allowed by the quota format
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* - EPERM when the caller lacked the required privilege (CAP_SYS_ADMIN) for
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* the specified operation
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*
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* For ERANGE error, the vfsv0 and vfsv1 format's maximum quota limit setting
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* have been fixed since the following kernel patch:
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*
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* commit 7e08da50cf706151f324349f9235ebd311226997
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* Author: Jan Kara <jack@suse.cz>
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* Date: Wed Mar 4 14:42:02 2015 +0100
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*
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* quota: Fix maximum quota limit settings
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*/
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#include <errno.h>
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#include <sys/quota.h>
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#include "tst_test.h"
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#include "quotactl_fmt_var.h"
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#include "tst_capability.h"
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#define OPTION_INVALID 999
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#define USRPATH MNTPOINT "/aquota.user"
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#define MNTPOINT "mntpoint"
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#define TESTDIR1 MNTPOINT "/testdir1"
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#define TESTDIR2 MNTPOINT "/testdir2"
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static char usrpath[] = USRPATH;
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static char testdir1[] = TESTDIR1;
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static char testdir2[] = TESTDIR2;
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static int32_t fmt_id;
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static int32_t fmt_invalid = 999;
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static int test_invalid = 1;
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static int test_id;
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static int getnextquota_nsup;
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static struct if_nextdqblk res_ndq;
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static struct dqblk set_dq = {
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.dqb_bsoftlimit = 100,
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.dqb_valid = QIF_BLIMITS
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};
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static struct dqblk set_dqmax = {
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.dqb_bsoftlimit = 0x7fffffffffffffffLL, /* 2^63-1 */
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.dqb_valid = QIF_BLIMITS
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};
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static struct tst_cap dropadmin = {
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.action = TST_CAP_DROP,
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.id = CAP_SYS_ADMIN,
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.name = "CAP_SYS_ADMIN",
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};
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static struct tst_cap needadmin = {
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.action = TST_CAP_REQ,
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.id = CAP_SYS_ADMIN,
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.name = "CAP_SYS_ADMIN",
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};
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static struct tcase {
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int cmd;
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int *id;
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void *addr;
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int exp_err;
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int on_flag;
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char *des;
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} tcases[] = {
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{QCMD(Q_QUOTAON, USRQUOTA), &fmt_id, testdir1, EACCES, 0,
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"EACCES when cmd is Q_QUOTAON and addr existed but not a regular file"},
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{QCMD(Q_QUOTAON, USRQUOTA), &fmt_id, testdir2, ENOENT, 0,
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"ENOENT when the file specified by special or addr does not exist"},
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{QCMD(Q_QUOTAON, USRQUOTA), &fmt_id, usrpath, EBUSY, 1,
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"EBUSY when cmd is Q_QUOTAON and another Q_QUOTAON had already been performed"},
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{QCMD(Q_SETQUOTA, USRQUOTA), &fmt_id, NULL, EFAULT, 1,
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"EFAULT when addr or special is invalid"},
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{QCMD(OPTION_INVALID, USRQUOTA), &fmt_id, usrpath, EINVAL, 0,
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"EINVAL when cmd or type is invalid"},
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{QCMD(Q_QUOTAON, USRQUOTA), &fmt_id, usrpath, ENOTBLK, 0,
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"ENOTBLK when special is not a block device"},
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{QCMD(Q_SETQUOTA, USRQUOTA), &test_id, &set_dq, ESRCH, 0,
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"ESRCH is for Q_SETQUOTA but no quota found for the user or quotas are off"},
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{QCMD(Q_QUOTAON, USRQUOTA), &fmt_invalid, usrpath, ESRCH, 0,
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"ESRCH when cmd is Q_QUOTAON, but the quota format was not found"},
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{QCMD(Q_GETNEXTQUOTA, USRQUOTA), &test_invalid, usrpath, ESRCH, 0,
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"ESRCH for Q_GETNEXTQUOTA, but the id was last one"},
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{QCMD(Q_SETQUOTA, USRQUOTA), &test_id, &set_dqmax, ERANGE, 1,
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"ERANGE for Q_SETQUOTA, but the specified limits are out of range"},
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{QCMD(Q_QUOTAON, USRQUOTA), &fmt_id, usrpath, EPERM, 0,
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"EPERM when the caller lacks the required privilege (CAP_SYS_ADMIN)"},
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};
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static void verify_quotactl(unsigned int n)
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{
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struct tcase *tc = &tcases[n];
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int quota_on = 0;
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int drop_flag = 0;
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tst_res(TINFO, "Testing %s", tc->des);
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if (tc->cmd == QCMD(Q_GETNEXTQUOTA, USRQUOTA) && getnextquota_nsup) {
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tst_res(TCONF, "current system doesn't support Q_GETNEXTQUOTA");
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return;
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}
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if (tc->on_flag) {
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TST_EXP_PASS_SILENT(quotactl(QCMD(Q_QUOTAON, USRQUOTA),
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tst_device->dev, fmt_id, usrpath),
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"quotactl with Q_QUOTAON");
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if (!TST_PASS)
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return;
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quota_on = 1;
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}
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if (tc->exp_err == EPERM) {
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tst_cap_action(&dropadmin);
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drop_flag = 1;
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}
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if (tc->exp_err == ENOTBLK) {
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TST_EXP_FAIL(quotactl(tc->cmd, "/dev/null", *tc->id, tc->addr),
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ENOTBLK, "quotactl()");
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} else {
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TST_EXP_FAIL(quotactl(tc->cmd, tst_device->dev, *tc->id,
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tc->addr), tc->exp_err, "quotactl()");
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}
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if (quota_on) {
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TST_EXP_PASS_SILENT(quotactl(QCMD(Q_QUOTAOFF, USRQUOTA),
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tst_device->dev, fmt_id, usrpath),
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"quotactl with Q_QUOTAOFF");
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if (!TST_PASS)
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return;
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}
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if (drop_flag)
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tst_cap_action(&needadmin);
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}
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static void setup(void)
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{
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unsigned int i;
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const struct quotactl_fmt_variant *var = &fmt_variants[tst_variant];
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const char *const cmd[] = {
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"quotacheck", "-ugF", var->fmt_name, MNTPOINT, NULL
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};
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tst_res(TINFO, "quotactl() with %s format", var->fmt_name);
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SAFE_CMD(cmd, NULL, NULL);
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fmt_id = var->fmt_id;
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/* vfsv0 block limit 2^42, vfsv1 block limit 2^63 - 1 */
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set_dqmax.dqb_bsoftlimit = tst_variant ? 0x20000000000000 : 0x100000000;
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SAFE_ACCESS(USRPATH, F_OK);
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SAFE_MKDIR(TESTDIR1, 0666);
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TEST(quotactl(QCMD(Q_GETNEXTQUOTA, USRQUOTA), tst_device->dev,
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test_id, (void *) &res_ndq));
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if (TST_ERR == EINVAL || TST_ERR == ENOSYS)
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getnextquota_nsup = 1;
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for (i = 0; i < ARRAY_SIZE(tcases); i++) {
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if (!tcases[i].addr)
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tcases[i].addr = tst_get_bad_addr(NULL);
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}
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}
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static void cleanup(void)
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{
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if (!access(USRPATH, F_OK))
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SAFE_UNLINK(USRPATH);
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if (!access(TESTDIR1, F_OK))
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SAFE_RMDIR(TESTDIR1);
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}
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static struct tst_test test = {
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.setup = setup,
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.cleanup = cleanup,
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.needs_drivers = (const char *const []) {
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"quota_v2",
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NULL
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},
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.tcnt = ARRAY_SIZE(tcases),
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.test = verify_quotactl,
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.dev_fs_type = "ext4",
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.mntpoint = MNTPOINT,
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.mount_device = 1,
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.mnt_data = "usrquota",
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.needs_cmds = (const char *const []) {
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"quotacheck",
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NULL
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},
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.needs_root = 1,
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.test_variants = QUOTACTL_FMT_VARIANTS,
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.tags = (const struct tst_tag[]) {
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{"linux-git", "7e08da50cf70"},
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{}
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}
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};
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