100 lines
1.9 KiB
C
100 lines
1.9 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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/* DESCRIPTION
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* This test will verify that new directory created by mkdir(2) inherites
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* the group ID from the parent directory and S_ISGID bit, if the S_ISGID
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* bit is set in the parent directory.
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*/
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <pwd.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include "tst_test.h"
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#define TESTDIR1 "testdir1"
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#define TESTDIR2 "testdir1/testdir2"
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static uid_t nobody_uid, bin_uid;
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static gid_t nobody_gid, bin_gid;
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static void verify_mkdir(void)
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{
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struct stat buf1, buf2;
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pid_t pid;
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int fail = 0;
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pid = SAFE_FORK();
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if (pid == 0) {
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SAFE_SETREGID(bin_gid, bin_gid);
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SAFE_SETREUID(bin_uid, bin_uid);
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SAFE_MKDIR(TESTDIR2, 0777);
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SAFE_STAT(TESTDIR2, &buf2);
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SAFE_STAT(TESTDIR1, &buf1);
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if (buf2.st_gid != buf1.st_gid) {
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tst_res(TFAIL,
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"New dir FAILED to inherit GID have %d expected %d",
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buf2.st_gid, buf1.st_gid);
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fail = 1;
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}
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if (!(buf2.st_mode & S_ISGID)) {
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tst_res(TFAIL, "New dir FAILED to inherit S_ISGID");
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fail = 1;
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}
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if (!fail)
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tst_res(TPASS, "New dir inherited GID and S_ISGID");
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exit(0);
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}
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tst_reap_children();
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SAFE_RMDIR(TESTDIR2);
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}
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static void setup(void)
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{
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struct passwd *pw;
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struct stat buf;
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pid_t pid;
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pw = SAFE_GETPWNAM("nobody");
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nobody_uid = pw->pw_uid;
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nobody_gid = pw->pw_gid;
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pw = SAFE_GETPWNAM("bin");
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bin_uid = pw->pw_uid;
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bin_gid = pw->pw_gid;
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umask(0);
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pid = SAFE_FORK();
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if (pid == 0) {
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SAFE_SETREGID(nobody_gid, nobody_gid);
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SAFE_SETREUID(nobody_uid, nobody_uid);
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SAFE_MKDIR(TESTDIR1, 0777);
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SAFE_STAT(TESTDIR1, &buf);
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SAFE_CHMOD(TESTDIR1, buf.st_mode | S_ISGID);
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exit(0);
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}
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tst_reap_children();
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}
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static struct tst_test test = {
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.setup = setup,
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.needs_tmpdir = 1,
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.needs_root = 1,
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.test_all = verify_mkdir,
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.forks_child = 1,
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};
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