1 /* 2 * Copyright (c) International Business Machines Corp., 2001 3 * 07/2001 Ported by Wayne Boyer 4 * 06/2017 Modified by Guangwen Feng <fenggw-fnst (at) cn.fujitsu.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 14 * the GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 /* 21 * DESCRIPTION 22 * 1. open a new file without O_CREAT, ENOENT should be returned. 23 * 2. open a file with O_RDONLY | O_NOATIME and the caller was not 24 * privileged, EPERM should be returned. 25 */ 26 27 #define _GNU_SOURCE 28 29 #include <stdio.h> 30 #include <sys/types.h> 31 #include <sys/stat.h> 32 #include <errno.h> 33 #include <fcntl.h> 34 #include <pwd.h> 35 #include "tst_test.h" 36 37 #define TEST_FILE "test_file" 38 #define TEST_FILE2 "test_file2" 39 40 static struct tcase { 41 char *filename; 42 int flag; 43 int exp_errno; 44 } tcases[] = { 45 {TEST_FILE, O_RDWR, ENOENT}, 46 {TEST_FILE2, O_RDONLY | O_NOATIME, EPERM}, 47 }; 48 49 void setup(void) 50 { 51 struct passwd *ltpuser; 52 53 SAFE_TOUCH(TEST_FILE2, 0644, NULL); 54 55 ltpuser = SAFE_GETPWNAM("nobody"); 56 57 SAFE_SETEUID(ltpuser->pw_uid); 58 } 59 60 static void verify_open(unsigned int n) 61 { 62 struct tcase *tc = &tcases[n]; 63 64 TEST(open(tc->filename, tc->flag, 0444)); 65 66 if (TEST_RETURN != -1) { 67 tst_res(TFAIL, "open(%s) succeeded unexpectedly", 68 tc->filename); 69 return; 70 } 71 72 if (tc->exp_errno != TEST_ERRNO) { 73 tst_res(TFAIL | TTERRNO, 74 "open() should fail with %s", 75 tst_strerrno(tc->exp_errno)); 76 return; 77 } 78 79 tst_res(TPASS | TTERRNO, "open() failed as expected"); 80 } 81 82 void cleanup(void) 83 { 84 SAFE_SETEUID(0); 85 } 86 87 static struct tst_test test = { 88 .tcnt = ARRAY_SIZE(tcases), 89 .needs_root = 1, 90 .needs_tmpdir = 1, 91 .setup = setup, 92 .cleanup = cleanup, 93 .test = verify_open, 94 }; 95
