79 lines
1.3 KiB
C
79 lines
1.3 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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* Ported to LTP: Wayne Boyer
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*/
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/*
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* Testcase to check creat(2) fails with EACCES
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <fcntl.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 "tst_test.h"
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#define DIRNAME "testdir"
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#define FILENAME DIRNAME"/file1"
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static uid_t nobody_uid;
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static struct tcase {
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const char *fname;
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} tcases[] = {
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{DIRNAME "/file"},
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{FILENAME}
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};
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static void child_fn(unsigned int i)
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{
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SAFE_SETEUID(nobody_uid);
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TEST(creat(tcases[i].fname, 0444));
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if (TST_RET != -1) {
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SAFE_UNLINK(tcases[i].fname);
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tst_res(TFAIL, "call succeeded unexpectedly");
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return;
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}
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if (TST_ERR != EACCES) {
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tst_res(TFAIL | TTERRNO, "Expected EACCES");
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return;
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}
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tst_res(TPASS, "call failed with EACCES as expected");
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}
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static void verify_creat(unsigned int i)
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{
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if (SAFE_FORK() == 0)
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child_fn(i);
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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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int fd;
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pw = SAFE_GETPWNAM("nobody");
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nobody_uid = pw->pw_uid;
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SAFE_MKDIR(DIRNAME, 0700);
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fd = SAFE_OPEN(FILENAME, O_RDWR | O_CREAT, 0444);
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SAFE_CLOSE(fd);
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}
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static struct tst_test test = {
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.tcnt = ARRAY_SIZE(tcases),
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.test = verify_creat,
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.needs_tmpdir = 1,
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.needs_root = 1,
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.forks_child = 1,
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.setup = setup,
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};
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