1 /* 2 * Copyright (c) International Business Machines Corp., 2001 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 12 * the GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program. 16 */ 17 18 /* 19 * DESCRIPTION 20 * Testcase to check the basic functionality of the getcwd(2) system call. 21 * 1) getcwd(2) works fine if buf and size are valid. 22 * 2) getcwd(2) works fine if buf points to NULL and size is set to 0. 23 * 3) getcwd(2) works fine if buf points to NULL and size is greater than strlen(path). 24 */ 25 26 #include <errno.h> 27 #include <unistd.h> 28 #include <stdlib.h> 29 #include <string.h> 30 #include "tst_test.h" 31 32 #define TMPDIR "/tmp" 33 34 static char exp_buf[PATH_MAX]; 35 static char buffer[PATH_MAX]; 36 37 static struct t_case { 38 char *buf; 39 size_t size; 40 } tcases[] = { 41 {buffer, sizeof(buffer)}, 42 {NULL, 0}, 43 {NULL, PATH_MAX} 44 }; 45 46 static void verify_getcwd(unsigned int n) 47 { 48 struct t_case *tc = &tcases[n]; 49 char *res = NULL; 50 51 errno = 0; 52 res = getcwd(tc->buf, tc->size); 53 TEST_ERRNO = errno; 54 if (!res) { 55 tst_res(TFAIL | TTERRNO, "getcwd() failed"); 56 goto end; 57 } 58 59 if (strcmp(exp_buf, res)) { 60 tst_res(TFAIL, "getcwd() returned unexpected directory: %s, " 61 "expected: %s", res, exp_buf); 62 goto end; 63 } 64 65 tst_res(TPASS, "getcwd() returned expected directory: %s", res); 66 67 end: 68 if (!tc->buf) 69 free(res); 70 } 71 72 static void setup(void) 73 { 74 SAFE_CHDIR(TMPDIR); 75 76 if (!realpath(TMPDIR, exp_buf)) 77 tst_brk(TBROK | TERRNO, "realpath() failed"); 78 79 tst_res(TINFO, "Expected path '%s'", exp_buf); 80 } 81 82 static struct tst_test test = { 83 .tid = "getcwd02", 84 .setup = setup, 85 .tcnt = ARRAY_SIZE(tcases), 86 .test = verify_getcwd 87 }; 88
