1/* 2 * Copyright (c) 2017 Fujitsu Ltd. 3 * Author: Xiao Yang <yangx.jy@cn.fujitsu.com> 4 * 5 * This program is free software: you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation, either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program, if not, see <http://www.gnu.org/licenses/>. 17 */ 18 19/* 20 * Test Name: quotactl03 21 * 22 * Description: 23 * quotactl(2) with XGETNEXTQUOTA looks for the next active quota for an user 24 * equal or higher to a given ID, in this test the ID is specified to a value 25 * close to UINT_MAX(max value of unsigned int). When reaching the upper limit 26 * and finding no active quota, it should return -1 and set errno to ENOENT. 27 * Actually, quotactl(2) overflows and and return 0 as the "next" active id. 28 * 29 * This kernel bug of xfs has been fixed in: 30 * 31 * commit 657bdfb7f5e68ca5e2ed009ab473c429b0d6af85 32 * Author: Eric Sandeen <sandeen@redhat.com> 33 * Date: Tue Jan 17 11:43:38 2017 -0800 34 * 35 * xfs: don't wrap ID in xfs_dq_get_next_id 36 */ 37 38#define _GNU_SOURCE 39#include <errno.h> 40#include <unistd.h> 41#include <stdio.h> 42#include <sys/quota.h> 43#include "config.h" 44 45#if defined(HAVE_QUOTAV2) || defined(HAVE_QUOTAV1) 46# include <sys/quota.h> 47#endif 48 49#if defined(HAVE_XFS_QUOTA) 50# include <xfs/xqm.h> 51#endif 52 53#include "tst_test.h" 54#include "lapi/quotactl.h" 55 56#if defined(HAVE_XFS_QUOTA) && (defined(HAVE_QUOTAV2) || defined(HAVE_QUOTAV1)) 57 58static const char mntpoint[] = "mnt_point"; 59static uint32_t test_id = 0xfffffffc; 60 61static void verify_quota(void) 62{ 63 struct fs_disk_quota res_dquota; 64 65 res_dquota.d_id = 1; 66 67 TEST(quotactl(QCMD(Q_XGETNEXTQUOTA, USRQUOTA), tst_device->dev, 68 test_id, (void *)&res_dquota)); 69 if (TEST_RETURN != -1) { 70 tst_res(TFAIL, "quotactl() found the next active ID:" 71 " %u unexpectedly", res_dquota.d_id); 72 return; 73 } 74 75 if (TEST_ERRNO == EINVAL) { 76 tst_brk(TCONF | TTERRNO, 77 "Q_XGETNEXTQUOTA wasn't supported in quotactl()"); 78 } 79 80 if (TEST_ERRNO != ENOENT) { 81 tst_res(TFAIL | TTERRNO, "quotaclt() failed unexpectedly with" 82 " %s expected ENOENT", tst_strerrno(TEST_ERRNO)); 83 } else { 84 tst_res(TPASS, "quotaclt() failed with ENOENT as expected"); 85 } 86} 87 88static struct tst_test test = { 89 .needs_tmpdir = 1, 90 .needs_root = 1, 91 .test_all = verify_quota, 92 .mount_device = 1, 93 .dev_fs_type = "xfs", 94 .mntpoint = mntpoint, 95 .mnt_data = "usrquota", 96}; 97 98#else 99 TST_TEST_TCONF("This system didn't support quota or xfs quota"); 100#endif 101