| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2001 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* |
| * Test Description: |
| * Verify that access() succeeds to check the read/write/execute permissions |
| * on a file if the mode argument passed was R_OK/W_OK/X_OK. |
| * |
| * Also verify that, access() succeeds to test the accessibility of the file |
| * referred to by symbolic link if the pathname points to a symbolic link. |
| * |
| * 07/2001 Ported by Wayne Boyer |
| */ |
| |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <pwd.h> |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| #define TEMP_FILE "temp_file" |
| #define SYM_FILE "sym_file" |
| #define TEST_FILE1 "test_file1" |
| #define TEST_FILE2 "test_file2" |
| #define TEST_FILE3 "test_file3" |
| #define FILE_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH) |
| #define EXE_MODE 0777 |
| |
| char *TCID = "access02"; |
| int TST_TOTAL = 4; |
| |
| static int fd1, fd2, fd4; |
| static const char nobody_uid[] = "nobody"; |
| static struct passwd *ltpuser; |
| |
| static int setup1(void); |
| static int setup2(void); |
| static int setup3(void); |
| static int setup4(void); |
| |
| static struct test_case_t { |
| char *pathname; |
| mode_t a_mode; |
| int (*setupfunc) (void); |
| } test_cases[] = { |
| {TEST_FILE1, R_OK, setup1}, |
| {TEST_FILE2, W_OK, setup2}, |
| {TEST_FILE3, X_OK, setup3}, |
| {SYM_FILE, W_OK, setup4}, |
| }; |
| |
| static void setup(void); |
| static void cleanup(void); |
| static int access_verify(int); |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| int i; |
| const char *msg; |
| mode_t access_mode; |
| char *file_name; |
| |
| msg = parse_opts(ac, av, NULL, NULL); |
| if (msg != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| tst_count = 0; |
| for (i = 0; i < TST_TOTAL; i++) { |
| file_name = test_cases[i].pathname; |
| access_mode = test_cases[i].a_mode; |
| |
| /* |
| * Call access(2) to check the test file |
| * for specified access mode permissions. |
| */ |
| TEST(access(file_name, access_mode)); |
| |
| if (TEST_RETURN == -1) { |
| tst_resm(TFAIL | TTERRNO, |
| "access(%s, %#o) failed", |
| file_name, access_mode); |
| continue; |
| } |
| |
| if (STD_FUNCTIONAL_TEST) |
| access_verify(i); |
| else |
| tst_resm(TPASS, "call succeeded"); |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup(void) |
| { |
| int i; |
| |
| tst_require_root(NULL); |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| ltpuser = getpwnam(nobody_uid); |
| if (ltpuser == NULL) |
| tst_brkm(TBROK | TERRNO, NULL, "getpwnam failed"); |
| if (setuid(ltpuser->pw_uid) == -1) |
| tst_brkm(TINFO | TERRNO, NULL, "setuid failed"); |
| |
| TEST_PAUSE; |
| tst_tmpdir(); |
| |
| for (i = 0; i < TST_TOTAL; i++) |
| test_cases[i].setupfunc(); |
| } |
| |
| /* |
| * setup1() - Setup function to test the functionality of access() for |
| * the access mode argument R_OK. |
| * |
| * Creat/open a testfile and write some data into it. |
| * This function returns 0. |
| */ |
| static int setup1(void) |
| { |
| char write_buf[] = "abc"; |
| |
| fd1 = open(TEST_FILE1, O_RDWR | O_CREAT, FILE_MODE); |
| if (fd1 == -1) { |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "open(%s, O_RDWR|O_CREAT, %#o) failed", |
| TEST_FILE1, FILE_MODE); |
| } |
| |
| /* write some data into testfile */ |
| if (write(fd1, write_buf, strlen(write_buf)) != strlen(write_buf)) { |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "write(%s) failed in setup1", TEST_FILE1); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * setup2() - Setup function to test the functionality of access() for |
| * the access mode argument W_OK. |
| * |
| * Creat/open a testfile for writing under temporary directory. |
| * This function returns 0. |
| */ |
| static int setup2(void) |
| { |
| fd2 = open(TEST_FILE2, O_RDWR | O_CREAT, FILE_MODE); |
| if (fd1 == -1) { |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "open(%s, O_RDWR|O_CREAT, %#o) failed", |
| TEST_FILE2, FILE_MODE); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * setup3() - Setup function to test the functionality of access() for |
| * the access mode argument X_OK. |
| * |
| * Creat/open a testfile and provide execute permissions to it. |
| * This function returns 0. |
| */ |
| static int setup3(void) |
| { |
| int fd3; |
| #ifdef UCLINUX |
| char exechead[] = "#!/bin/sh\n"; |
| #endif |
| |
| fd3 = open(TEST_FILE3, O_RDWR | O_CREAT, FILE_MODE); |
| if (fd3 == -1) { |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "open(%s, O_RDWR|O_CREAT, %#o) failed", |
| TEST_FILE3, FILE_MODE); |
| } |
| #ifdef UCLINUX |
| if (write(fd3, exechead, sizeof(exechead)) < 0) { |
| tst_brkm(TBROK | TERRNO, cleanup, "write(%s) failed", |
| TEST_FILE3); |
| } |
| #endif |
| |
| /* Close the test file created above */ |
| if (close(fd3) == -1) { |
| tst_brkm(TBROK | TERRNO, cleanup, "close(%s) failed", |
| TEST_FILE3); |
| } |
| |
| /* Set execute permission bits on the test file. */ |
| if (chmod(TEST_FILE3, EXE_MODE) < 0) { |
| tst_brkm(TBROK | TERRNO, cleanup, "chmod(%s, %#o) failed", |
| TEST_FILE3, EXE_MODE); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * setup4() - Setup function to test the functionality of access() for |
| * symbolic link file. |
| * |
| * Creat/open a temporary file and close it. |
| * Creat a symbolic link of temporary file. |
| * This function returns 0. |
| */ |
| static int setup4(void) |
| { |
| fd4 = open(TEMP_FILE, O_RDWR | O_CREAT, FILE_MODE); |
| if (fd4 == -1) { |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "open(%s, O_RDWR|O_CREAT, %#o) failed", |
| TEMP_FILE, FILE_MODE); |
| } |
| |
| /* Creat a symbolic link for temporary file */ |
| if (symlink(TEMP_FILE, SYM_FILE) < 0) { |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "symlink(%s, %s) failed", TEMP_FILE, SYM_FILE); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * access_verify(i) - |
| * |
| * This function verify the accessibility of the |
| * the testfile with the one verified by access(). |
| */ |
| static int access_verify(int i) |
| { |
| char write_buf[] = "abc"; |
| char read_buf[BUFSIZ]; |
| int rval; |
| |
| rval = 0; |
| |
| switch (i) { |
| case 0: |
| /* |
| * The specified file has read access. |
| * Attempt to read some data from the testfile |
| * and if successful, access() behaviour is |
| * correct. |
| */ |
| rval = read(fd1, &read_buf, sizeof(read_buf)); |
| if (rval == -1) |
| tst_resm(TFAIL | TERRNO, "read(%s) failed", TEST_FILE1); |
| break; |
| case 1: |
| /* |
| * The specified file has write access. |
| * Attempt to write some data to the testfile |
| * and if successful, access() behaviour is correct. |
| */ |
| rval = write(fd2, write_buf, strlen(write_buf)); |
| if (rval == -1) |
| tst_resm(TFAIL | TERRNO, "write(%s) failed", |
| TEST_FILE2); |
| break; |
| case 2: |
| /* |
| * The specified file has execute access. |
| * Attempt to execute the specified executable |
| * file, if successful, access() behaviour is correct. |
| */ |
| rval = system("./" TEST_FILE3); |
| if (rval != 0) |
| tst_resm(TFAIL, "Fail to execute the %s", TEST_FILE3); |
| break; |
| case 3: |
| /* |
| * The file pointed to by symbolic link has |
| * write access. |
| * Attempt to write some data to this temporary file |
| * pointed to by symlink. if successful, access() bahaviour |
| * is correct. |
| */ |
| rval = write(fd4, write_buf, strlen(write_buf)); |
| if (rval == -1) |
| tst_resm(TFAIL | TERRNO, "write(%s) failed", TEMP_FILE); |
| break; |
| default: |
| break; |
| } |
| |
| return rval; |
| } |
| |
| static void cleanup(void) |
| { |
| TEST_CLEANUP; |
| |
| /* Close the testfile(s) created in the setup()s */ |
| if (close(fd1) == -1) |
| tst_brkm(TFAIL | TERRNO, NULL, "close(%s) failed", TEST_FILE1); |
| if (close(fd2) == -1) |
| tst_brkm(TFAIL | TERRNO, NULL, "close(%s) failed", TEST_FILE2); |
| if (close(fd4) == -1) |
| tst_brkm(TFAIL | TERRNO, NULL, "close(%s) failed", TEMP_FILE); |
| |
| tst_rmdir(); |
| } |