169 lines
4.0 KiB
C
169 lines
4.0 KiB
C
/*
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* Copyright (c) International Business Machines Corp., 2001
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* 07/2001 Ported by Wayne Boyer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* Test Description:
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* Verify that,
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* 1) fchown(2) returns -1 and sets errno to EPERM if the effective user id
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* of process does not match the owner of the file and the process is
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* not super user.
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* 2) fchown(2) returns -1 and sets errno to EBADF if the file descriptor
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* of the specified file is not valid.
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* 3) fchown(2) returns -1 and sets errno to EROFS if the named file resides
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* on a read-only file system.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.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 <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mount.h>
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#include "test.h"
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#include "safe_macros.h"
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#include "compat_16.h"
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#define DIR_MODE (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP| \
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S_IXGRP|S_IROTH|S_IXOTH)
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static int fd1;
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static int fd2 = -1;
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static int fd3;
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static const char *device;
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static int mount_flag;
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static struct test_case_t {
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int *fd;
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int exp_errno;
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} test_cases[] = {
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{&fd1, EPERM},
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{&fd2, EBADF},
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{&fd3, EROFS},
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};
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TCID_DEFINE(fchown04);
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int TST_TOTAL = ARRAY_SIZE(test_cases);
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static void setup(void);
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static void fchown_verify(int);
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static void cleanup(void);
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int main(int ac, char **av)
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{
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int lc;
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int i;
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tst_parse_opts(ac, av, NULL, NULL);
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setup();
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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tst_count = 0;
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for (i = 0; i < TST_TOTAL; i++)
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fchown_verify(i);
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}
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cleanup();
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tst_exit();
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}
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static void setup(void)
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{
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struct passwd *ltpuser;
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const char *fs_type;
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TEST_PAUSE;
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tst_require_root();
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tst_tmpdir();
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fs_type = tst_dev_fs_type();
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device = tst_acquire_device(cleanup);
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if (!device)
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tst_brkm(TCONF, cleanup, "Failed to acquire device");
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tst_sig(NOFORK, DEF_HANDLER, cleanup);
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fd1 = SAFE_OPEN(cleanup, "tfile_1", O_RDWR | O_CREAT, 0666);
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tst_mkfs(cleanup, device, fs_type, NULL, NULL);
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SAFE_MKDIR(cleanup, "mntpoint", DIR_MODE);
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SAFE_MOUNT(cleanup, device, "mntpoint", fs_type, 0, NULL);
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mount_flag = 1;
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SAFE_TOUCH(cleanup, "mntpoint/tfile_3", 0644, NULL);
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SAFE_MOUNT(cleanup, device, "mntpoint", fs_type,
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MS_REMOUNT | MS_RDONLY, NULL);
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fd3 = SAFE_OPEN(cleanup, "mntpoint/tfile_3", O_RDONLY);
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ltpuser = SAFE_GETPWNAM(cleanup, "nobody");
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SAFE_SETEUID(cleanup, ltpuser->pw_uid);
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}
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static void fchown_verify(int i)
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{
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UID16_CHECK(geteuid(), "fchown", cleanup)
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GID16_CHECK(getegid(), "fchown", cleanup)
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TEST(FCHOWN(cleanup, *test_cases[i].fd, geteuid(), getegid()));
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if (TEST_RETURN == -1) {
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if (TEST_ERRNO == test_cases[i].exp_errno) {
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tst_resm(TPASS | TTERRNO, "fchown failed as expected");
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} else {
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tst_resm(TFAIL | TTERRNO,
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"fchown failed unexpectedly; expected %d - %s",
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test_cases[i].exp_errno,
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strerror(test_cases[i].exp_errno));
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}
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} else {
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tst_resm(TFAIL, "fchown passed unexpectedly");
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}
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}
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static void cleanup(void)
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{
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if (seteuid(0))
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tst_resm(TWARN | TERRNO, "Failet to seteuid(0) before cleanup");
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if (fd1 > 0 && close(fd1))
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tst_resm(TWARN | TERRNO, "Failed to close fd1");
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if (fd3 > 0 && close(fd3))
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tst_resm(TWARN | TERRNO, "Failed to close fd3");
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if (mount_flag && tst_umount("mntpoint") < 0)
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tst_resm(TWARN | TERRNO, "umount device:%s failed", device);
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if (device)
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tst_release_device(device);
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tst_rmdir();
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}
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