diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/tst-sync_file_range.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/tst-sync_file_range.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/tst-sync_file_range.c b/sysdeps/unix/sysv/linux/tst-sync_file_range.c new file mode 100644 index 0000000000..680ccde219 --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-sync_file_range.c @@ -0,0 +1,132 @@ +/* Basic sync_file_range (not specific flag is checked). + Copyright (C) 2016-2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +/* sync_file_range is only define for LFS. */ +#define _FILE_OFFSET_BITS 64 +#include <errno.h> +#include <fcntl.h> +#include <limits.h> +#include <stdint.h> +#include <stdlib.h> +#include <sys/stat.h> + +#include <support/temp_file.h> +#include <support/check.h> + +#define XSTR(s) STR(S) +#define STR(s) #s + +static char *temp_filename; +static int temp_fd; + +static char fifoname[] = "/tmp/tst-posix_fadvise-fifo-XXXXXX"; +static int fifofd; + +void +do_prepare (int argc, char **argv) +{ + temp_fd = create_temp_file ("tst-file_sync_range.", &temp_filename); + if (temp_fd == -1) + FAIL_EXIT1 ("cannot create temporary file: %m"); + + if (mktemp (fifoname) == NULL) + FAIL_EXIT1 ("cannot generate temp file name: %m"); + add_temp_file (fifoname); + + if (mkfifo (fifoname, S_IWUSR | S_IRUSR) != 0) + FAIL_EXIT1 ("cannot create fifo: %m"); + + fifofd = open (fifoname, O_RDONLY | O_NONBLOCK); + if (fifofd == -1) + FAIL_EXIT1 ("cannot open fifo: %m"); +} +#define PREPARE do_prepare + +static int +do_test (void) +{ + int ret; + + /* This tests first check for some invalid usage and then check for + a simple usage. It does not cover for all possible issue since for + EIO/ENOMEM/ENOSPC would require to create very specific scenarios that + are outside the current test coverage (basically correct kernel argument + passing. */ + + /* Check for invalid file descriptor. */ + if ((ret = sync_file_range (-1, 0, 0, 0)) != -1) + FAIL_EXIT1 ("sync_file_range did not fail on an invalid descriptor " + "(returned %d, expected -1)", ret); + if (errno != EBADF) + FAIL_EXIT1 ("sync_file_range on an invalid descriptor did not set errno to " + "EBADF (%d)", errno); + + if ((ret = sync_file_range (fifofd, 0, 0, 0)) != -1) + FAIL_EXIT1 ("sync_file_range did not fail on an invalid descriptor " + "(returned %d, expected -1)", ret); + if (errno != ESPIPE) + FAIL_EXIT1 ("sync_file_range on an invalid descriptor did not set errno to " + "EBADF (%d)", errno); + + /* Check for invalid flags (it must be + SYNC_FILE_RANGE_{WAIT_BEFORE,WRITE,WAIT_AFTER) or a 'or' combination of + them. */ + if ((ret = sync_file_range (temp_fd, 0, 0, -1)) != -1) + FAIL_EXIT1 ("sync_file_range did not failed with invalid flags " + "(returned %d, " "expected -1)", ret); + if (errno != EINVAL) + FAIL_EXIT1 ("sync_file_range with invalid flag did not set errno to " + "EINVAL (%d)", errno); + + /* Check for negative offset. */ + if ((ret = sync_file_range (temp_fd, -1, 1, 0)) != -1) + FAIL_EXIT1 ("sync_file_range did not failed with invalid offset " + "(returned %d, expected -1)", ret); + if (errno != EINVAL) + FAIL_EXIT1 ("sync_file_range with invalid offset did not set errno to " + "EINVAL (%d)", errno); + + /* offset + nbytes must be a positive value. */ + if ((ret = sync_file_range (temp_fd, 1024, -2048, 0)) != -1) + FAIL_EXIT1 ("sync_file_range did not failed with invalid nbytes (returned %d, " + "expected -1)", ret); + if (errno != EINVAL) + FAIL_EXIT1 ("sync_file_range with invalid offset did not set errno to " + "EINVAL (%d)", errno); + + /* offset + nbytes must be larger or equal than offset */ + if ((ret = sync_file_range (temp_fd, -1024, 1024, 0)) != -1) + FAIL_EXIT1 ("sync_file_range did not failed with invalid offset " + "(returned %d, expected -1)", ret); + if (errno != EINVAL) + FAIL_EXIT1 ("sync_file_range with invalid offset did not set errno to " + "EINVAL (%d)", errno); + + /* Check simple successful case. */ + if ((ret = sync_file_range (temp_fd, 0, 1024, 0)) == -1) + FAIL_EXIT1 ("sync_file_range failed (errno = %d)", errno); + + /* Finally check also a successful case with a 64-bit offset. */ + off_t large_offset = UINT32_MAX + 2048LL; + if ((ret = sync_file_range (temp_fd, large_offset, 1024, 0)) == -1) + FAIL_EXIT1 ("sync_file_range failed (errno = %d)", errno); + + return 0; +} + +#include <support/test-driver.c> |