92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2001
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*/
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/*
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* Test Name: chmod07
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*
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* Test Description:
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* Verify that, chmod(2) will succeed to change the mode of a file/directory
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* and sets the sticky bit on it if invoked by root (uid = 0) process with
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* the following constraints,
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* - the process is not the owner of the file/directory.
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* - the effective group ID or one of the supplementary group ID's of the
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* process is equal to the group ID of the file/directory.
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*
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* Expected Result:
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* chmod() should return value 0 on success and succeeds to set sticky bit
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* on the specified file.
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <string.h>
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#include <signal.h>
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#include <grp.h>
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#include <pwd.h>
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#include "tst_test.h"
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#define FILE_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
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#define PERMS 01777 /* Permissions with sticky bit set. */
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#define TESTFILE "testfile"
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void test_chmod(void)
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{
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struct stat stat_buf;
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/*
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* Call chmod(2) with specified mode argument
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* (sticky-bit set) on testfile.
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*/
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TEST(chmod(TESTFILE, PERMS));
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if (TST_RET == -1) {
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tst_brk(TFAIL | TTERRNO, "chmod(%s, %#o) failed",
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TESTFILE, PERMS);
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}
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if (stat(TESTFILE, &stat_buf) == -1) {
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tst_brk(TFAIL | TTERRNO, "stat failed");
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}
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/* Check for expected mode permissions */
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if ((stat_buf.st_mode & PERMS) == PERMS) {
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tst_res(TPASS, "Functionality of chmod(%s, %#o) successful",
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TESTFILE, PERMS);
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} else {
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tst_res(TFAIL, "%s: Incorrect modes 0%03o; expected 0%03o",
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TESTFILE, stat_buf.st_mode, PERMS);
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}
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}
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void setup(void)
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{
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struct passwd *ltpuser;
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struct group *ltpgroup;
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int fd;
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gid_t group1_gid;
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uid_t user1_uid;
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ltpuser = SAFE_GETPWNAM("nobody");
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user1_uid = ltpuser->pw_uid;
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ltpgroup = SAFE_GETGRNAM_FALLBACK("users", "daemon");
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group1_gid = ltpgroup->gr_gid;
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fd = SAFE_OPEN(TESTFILE, O_RDWR | O_CREAT, FILE_MODE);
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SAFE_CLOSE(fd);
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SAFE_CHOWN(TESTFILE, user1_uid, group1_gid);
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SAFE_SETGID(group1_gid);
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}
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static struct tst_test test = {
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.needs_root = 1,
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.needs_tmpdir = 1,
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.setup = setup,
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.test_all = test_chmod,
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};
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