android13/external/ltp/testcases/kernel/syscalls/fchmod/fchmod06.c

87 lines
1.6 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) International Business Machines Corp., 2001
* Author: Wayne Boyer
* Copyright (c) 2018 Cyril Hrubis <chrubis@suse.cz>
*/
/*
* Test that fchmod() fails and sets the proper errno values.
*/
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <errno.h>
#include <sys/types.h>
#include <pwd.h>
#include "tst_test.h"
#define MNT_POINT "mntpoint"
static int fd1;
static int fd2;
static int fd3;
static struct tcase {
int *fd;
int mode;
int exp_errno;
} tcases[] = {
{&fd1, 0644, EPERM},
{&fd2, 0644, EBADF},
{&fd3, 0644, EROFS},
};
static void verify_fchmod(unsigned int i)
{
struct tcase *tc = &tcases[i];
TEST(fchmod(*tc->fd, tc->mode));
if (TST_RET != -1) {
tst_res(TFAIL, "fchmod() passed unexpectedly (%li)",
TST_RET);
return;
}
if (TST_ERR == tcases[i].exp_errno) {
tst_res(TPASS | TTERRNO, "fchmod() failed expectedly");
return;
}
tst_res(TFAIL | TTERRNO,
"fchmod() failed unexpectedly, expected %i - %s",
TST_ERR, tst_strerrno(TST_ERR));
}
static void setup(void)
{
struct passwd *ltpuser = SAFE_GETPWNAM("nobody");
fd3 = SAFE_OPEN(MNT_POINT"/file", O_RDONLY);
fd1 = SAFE_OPEN("tfile_1", O_RDWR | O_CREAT, 0666);
fd2 = SAFE_OPEN("tfile_2", O_RDWR | O_CREAT, 0666);
SAFE_CLOSE(fd2);
SAFE_SETEUID(ltpuser->pw_uid);
}
static void cleanup(void)
{
if (fd1 > 0)
SAFE_CLOSE(fd1);
if (fd3 > 0)
SAFE_CLOSE(fd3);
}
static struct tst_test test = {
.setup = setup,
.cleanup = cleanup,
.test = verify_fchmod,
.tcnt = ARRAY_SIZE(tcases),
.needs_root = 1,
.needs_rofs = 1,
.mntpoint = MNT_POINT,
};