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133 lines
4.6 KiB
C
133 lines
4.6 KiB
C
/* Basic sync_file_range (not specific flag is checked).
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Copyright (C) 2016-2020 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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<https://www.gnu.org/licenses/>. */
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/* sync_file_range is only define for LFS. */
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#define _FILE_OFFSET_BITS 64
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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 <stdint.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <support/temp_file.h>
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#include <support/check.h>
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#define XSTR(s) STR(S)
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#define STR(s) #s
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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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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-file_sync_range.", &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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#define PREPARE do_prepare
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static int
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do_test (void)
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{
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int ret;
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/* This tests first check for some invalid usage and then check for
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a simple usage. It does not cover for all possible issue since for
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EIO/ENOMEM/ENOSPC would require to create very specific scenarios that
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are outside the current test coverage (basically correct kernel argument
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passing. */
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/* Check for invalid file descriptor. */
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if ((ret = sync_file_range (-1, 0, 0, 0)) != -1)
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FAIL_EXIT1 ("sync_file_range did not fail on an invalid descriptor "
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"(returned %d, expected -1)", ret);
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if (errno != EBADF)
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FAIL_EXIT1 ("sync_file_range on an invalid descriptor did not set errno to "
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"EBADF (%d)", errno);
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if ((ret = sync_file_range (fifofd, 0, 0, 0)) != -1)
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FAIL_EXIT1 ("sync_file_range did not fail on an invalid descriptor "
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"(returned %d, expected -1)", ret);
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if (errno != ESPIPE)
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FAIL_EXIT1 ("sync_file_range on an invalid descriptor did not set errno to "
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"EBADF (%d)", errno);
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/* Check for invalid flags (it must be
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SYNC_FILE_RANGE_{WAIT_BEFORE,WRITE,WAIT_AFTER) or a 'or' combination of
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them. */
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if ((ret = sync_file_range (temp_fd, 0, 0, -1)) != -1)
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FAIL_EXIT1 ("sync_file_range did not failed with invalid flags "
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"(returned %d, " "expected -1)", ret);
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if (errno != EINVAL)
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FAIL_EXIT1 ("sync_file_range with invalid flag did not set errno to "
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"EINVAL (%d)", errno);
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/* Check for negative offset. */
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if ((ret = sync_file_range (temp_fd, -1, 1, 0)) != -1)
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FAIL_EXIT1 ("sync_file_range did not failed with invalid offset "
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"(returned %d, expected -1)", ret);
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if (errno != EINVAL)
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FAIL_EXIT1 ("sync_file_range with invalid offset did not set errno to "
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"EINVAL (%d)", errno);
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/* offset + nbytes must be a positive value. */
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if ((ret = sync_file_range (temp_fd, 1024, -2048, 0)) != -1)
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FAIL_EXIT1 ("sync_file_range did not failed with invalid nbytes (returned %d, "
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"expected -1)", ret);
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if (errno != EINVAL)
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FAIL_EXIT1 ("sync_file_range with invalid offset did not set errno to "
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"EINVAL (%d)", errno);
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/* offset + nbytes must be larger or equal than offset */
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if ((ret = sync_file_range (temp_fd, -1024, 1024, 0)) != -1)
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FAIL_EXIT1 ("sync_file_range did not failed with invalid offset "
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"(returned %d, expected -1)", ret);
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if (errno != EINVAL)
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FAIL_EXIT1 ("sync_file_range with invalid offset did not set errno to "
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"EINVAL (%d)", errno);
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/* Check simple successful case. */
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if ((ret = sync_file_range (temp_fd, 0, 1024, 0)) == -1)
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FAIL_EXIT1 ("sync_file_range failed (errno = %d)", errno);
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/* Finally check also a successful case with a 64-bit offset. */
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off_t large_offset = UINT32_MAX + 2048LL;
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if ((ret = sync_file_range (temp_fd, large_offset, 1024, 0)) == -1)
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FAIL_EXIT1 ("sync_file_range failed (errno = %d)", errno);
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return 0;
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}
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#include <support/test-driver.c>
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