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111 lines
3.6 KiB
C
111 lines
3.6 KiB
C
/* Common posix_fadvise tests definitions.
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Copyright (C) 2016-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <support/support.h>
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#include <support/check.h>
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#include <support/temp_file.h>
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static char *temp_filename;
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static int temp_fd;
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static char fifoname[] = "/tmp/tst-posix_fadvise-fifo-XXXXXX";
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static int fifofd;
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static void
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do_prepare (int argc, char **argv)
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{
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temp_fd = create_temp_file ("tst-posix_fadvise.", &temp_filename);
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if (temp_fd == -1)
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FAIL_EXIT1 ("cannot create temporary file: %m");
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if (mktemp (fifoname) == NULL)
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FAIL_EXIT1 ("cannot generate temp file name: %m");
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add_temp_file (fifoname);
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if (mkfifo (fifoname, S_IWUSR | S_IRUSR) != 0)
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FAIL_EXIT1 ("cannot create fifo: %m");
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fifofd = open (fifoname, O_RDONLY | O_NONBLOCK);
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if (fifofd == -1)
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FAIL_EXIT1 ("cannot open fifo: %m");
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}
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/* Effectivelly testing posix_fadvise is hard because side effects are not
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observed without checking either performance or any kernel specific
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supplied information. Also, the syscall is meant to be an advisory,
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so the kernel is free to use this information in any way it deems fit,
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including ignoring it.
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This test check for some invalid returned operation to check argument
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passing and if implementation follows POSIX error definition. */
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static int
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do_test_common (void)
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{
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/* Add some data to file and ensure it is written to disk. */
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#define BLK_SIZE 2048
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char buffer[BLK_SIZE] = { 0xcd };
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ssize_t ret;
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if ((ret = write (temp_fd, buffer, BLK_SIZE)) != BLK_SIZE)
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FAIL_EXIT1 ("write returned %zd different than expected %d",
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ret, BLK_SIZE);
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if (fsync (temp_fd) != 0)
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FAIL_EXIT1 ("fsync failed");
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/* Test passing an invalid fd. */
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if (posix_fadvise (-1, 0, 0, POSIX_FADV_NORMAL) != EBADF)
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FAIL_EXIT1 ("posix_fadvise with invalid fd did not return EBADF");
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/* Test passing an invalid operation. */
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if (posix_fadvise (temp_fd, 0, 0, -1) != EINVAL)
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FAIL_EXIT1 ("posix_fadvise with invalid advise did not return EINVAL");
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/* Test passing a FIFO fd. */
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if (posix_fadvise (fifofd, 0, 0, POSIX_FADV_NORMAL) != ESPIPE)
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FAIL_EXIT1 ("posix_advise with PIPE fd did not return ESPIPE");
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/* Default fadvise on all file starting at initial position. */
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if (posix_fadvise (temp_fd, 0, 0, POSIX_FADV_NORMAL) != 0)
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FAIL_EXIT1 ("default posix_fadvise failed");
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if (posix_fadvise (temp_fd, 0, 2 * BLK_SIZE, POSIX_FADV_NORMAL) != 0)
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FAIL_EXIT1 ("posix_fadvise failed (offset = 0, len = %d) failed",
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BLK_SIZE);
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if (posix_fadvise (temp_fd, 2 * BLK_SIZE, 0, POSIX_FADV_NORMAL) != 0)
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FAIL_EXIT1 ("posix_fadvise failed (offset = %d, len = 0) failed",
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BLK_SIZE);
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return 0;
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}
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#define PREPARE do_prepare
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/* This function is defined by the individual tests. */
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static int do_test (void);
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#include <support/test-driver.c>
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