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103 lines
2.0 KiB
103 lines
2.0 KiB
// 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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* 07/2001 Ported by Wayne Boyer
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* 05/2019 Ported to new library: Christian Amann <camann@suse.com>
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*/
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/*
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* Tests different error scenarios:
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*
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* 1) Calls fstat() with closed file descriptor
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* -> EBADF
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* 2) Calls fstat() with an invalid address for stat structure
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* -> EFAULT (or receive signal SIGSEGV)
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*/
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <wait.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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#include "tst_safe_macros.h"
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#define TESTFILE "test_file"
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static int fd_ok;
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static int fd_ebadf = -1;
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static struct stat stat_buf;
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static struct tcase {
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int *fd;
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struct stat *stat_buf;
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int exp_err;
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} tcases[] = {
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{&fd_ebadf, &stat_buf, EBADF},
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{&fd_ok, NULL, EFAULT},
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};
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static void check_fstat(unsigned int tc_num)
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{
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struct tcase *tc = &tcases[tc_num];
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TEST(fstat(*tc->fd, tc->stat_buf));
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if (TST_RET == -1) {
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if (tc->exp_err == TST_ERR) {
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tst_res(TPASS,
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"fstat() fails with expected error %s",
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tst_strerrno(tc->exp_err));
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} else {
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tst_res(TFAIL | TTERRNO,
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"fstat() did not fail with %s, but with",
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tst_strerrno(tc->exp_err));
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}
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} else {
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tst_res(TFAIL, "fstat() returned %ld, expected -1",
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TST_RET);
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}
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}
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static void run(unsigned int tc_num)
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{
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pid_t pid;
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int status;
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pid = SAFE_FORK();
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if (pid == 0) {
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check_fstat(tc_num);
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return;
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}
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SAFE_WAITPID(pid, &status, 0);
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if (tcases[tc_num].exp_err == EFAULT && WTERMSIG(status) == SIGSEGV) {
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tst_res(TPASS, "fstat() failed as expected with SIGSEGV");
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return;
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}
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if (WIFEXITED(status) && WEXITSTATUS(status) == 0)
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return;
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tst_res(TBROK, "child %s", tst_strstatus(status));
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}
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static void setup(void)
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{
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fd_ok = SAFE_OPEN(TESTFILE, O_RDWR | O_CREAT, 0644);
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}
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static void cleanup(void)
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{
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if (fd_ok > 0)
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SAFE_CLOSE(fd_ok);
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}
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static struct tst_test test = {
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.test = run,
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.tcnt = ARRAY_SIZE(tcases),
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.setup = setup,
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.cleanup = cleanup,
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.needs_tmpdir = 1,
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.forks_child = 1,
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};
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