1 /* 2 * Copyright (C) Bull S.A. 2001 3 * Copyright (c) International Business Machines Corp., 2001 4 * Copyright (c) 2017 Cyril Hrubis <chrubis (at) suse.cz> 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 /* 22 * DESCRIPTION 23 * Testcase for testing that fchdir(2) sets EACCES errno 24 * 25 * ALGORITHM 26 * 1. create a child process, sets its uid to ltpuser1 27 * 2. this child creates a directory with perm 400, 28 * 3. this child opens the directory and gets a file descriptor 29 * 4. this child attempts to fchdir(2) to the directory created in 2. 30 * and expects to get an EACCES. 31 */ 32 33 #include <errno.h> 34 #include <pwd.h> 35 #include "tst_test.h" 36 37 #define DIRNAME "fchdir03_dir" 38 39 static int fd; 40 41 void verify_fchdir(void) 42 { 43 TEST(fchdir(fd)); 44 45 if (TEST_RETURN != -1) { 46 tst_res(TFAIL, "fchdir() succeeded unexpectedly"); 47 return; 48 } 49 50 if (TEST_ERRNO != EACCES) { 51 tst_res(TFAIL | TTERRNO, "fchdir() should fail with EACCES"); 52 return; 53 } 54 55 tst_res(TPASS | TTERRNO, "fchdir() failed expectedly"); 56 } 57 58 void setup(void) 59 { 60 struct passwd *pw; 61 62 pw = SAFE_GETPWNAM("nobody"); 63 SAFE_SETEUID(pw->pw_uid); 64 SAFE_MKDIR(DIRNAME, 0400); 65 66 fd = SAFE_OPEN(DIRNAME, O_RDONLY); 67 } 68 69 static struct tst_test test = { 70 .setup = setup, 71 .test_all = verify_fchdir, 72 .needs_tmpdir = 1, 73 .needs_root = 1, 74 }; 75
