90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) Wayne Boyer, International Business Machines Corp., 2001
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* Copyright (c) 2019 SUSE LLC <mdoucha@suse.cz>
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*/
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/*
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* Test Description:
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* Testcase to check that fsync(2) sets errno correctly.
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* 1. Call fsync() on a pipe(fd), and expect EINVAL.
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* 2. Call fsync() on a socket(fd), and expect EINVAL.
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* 3. Call fsync() on a closed fd, and test for EBADF.
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* 4. Call fsync() on an invalid fd, and test for EBADF.
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* 5. Call fsync() on a fifo(fd), and expect EINVAL.
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*/
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#include <unistd.h>
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#include <errno.h>
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#include "tst_test.h"
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#define FIFO_PATH "fifo"
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static int fifo_rfd, fifo_wfd;
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static int pipe_fd[2];
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static int sock_fd, bad_fd = -1;
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static const struct test_case {
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int *fd;
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int error;
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} testcase_list[] = {
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/* EINVAL - fsync() on pipe should not succeed. */
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{&pipe_fd[1], EINVAL},
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/* EINVAL - fsync() on socket should not succeed. */
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{&sock_fd, EINVAL},
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/* EBADF - fd is closed */
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{&pipe_fd[0], EBADF},
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/* EBADF - fd is invalid (-1) */
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{&bad_fd, EBADF},
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/* EINVAL - fsync() on fifo should not succeed. */
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{&fifo_wfd, EINVAL},
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};
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static void setup(void)
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{
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SAFE_MKFIFO(FIFO_PATH, 0644);
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SAFE_PIPE(pipe_fd);
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// FIFO must be opened for reading first, otherwise
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// open(fifo, O_WRONLY) will block.
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fifo_rfd = SAFE_OPEN(FIFO_PATH, O_RDONLY | O_NONBLOCK);
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fifo_wfd = SAFE_OPEN(FIFO_PATH, O_WRONLY);
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sock_fd = SAFE_SOCKET(AF_UNIX, SOCK_STREAM, 0);
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// Do not open any file descriptors after this line unless you close
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// them before the next test run.
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SAFE_CLOSE(pipe_fd[0]);
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}
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static void test_fsync(unsigned int n)
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{
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const struct test_case *tc = testcase_list + n;
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TEST(fsync(*tc->fd));
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if (TST_RET != -1) {
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tst_res(TFAIL, "fsync() returned unexpected value %ld",
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TST_RET);
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} else if (TST_ERR != tc->error) {
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tst_res(TFAIL | TTERRNO, "fsync(): unexpected error");
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} else {
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tst_res(TPASS | TTERRNO, "fsync() failed as expected");
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}
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}
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static void cleanup(void)
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{
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SAFE_CLOSE(fifo_wfd);
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SAFE_CLOSE(fifo_rfd);
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SAFE_CLOSE(pipe_fd[1]);
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SAFE_CLOSE(sock_fd);
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}
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static struct tst_test test = {
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.test = test_fsync,
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.tcnt = ARRAY_SIZE(testcase_list),
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.needs_tmpdir = 1,
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.setup = setup,
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.cleanup = cleanup
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};
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