/* * Copyright (C) 2013-2020 Canonical, Ltd. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * This code is a complete clean re-write of the stress tool by * Colin Ian King and attempts to be * backwardly compatible with the stress tool by Amos Waterland * but has more stress tests and more * functionality. * */ #include #include #if defined(__gnu_hurd__) #error posix_fadvise is defined but not implemented and will always fail #endif #define NO_FADV int main(void) { static const char *filename = "/tmp/test-msync.tmp"; int fd, ret, err = 1; fd = open(filename, O_RDWR | O_CREAT, 0666); if (fd < 0) return 1; (void)unlink(filename); #if defined(POSIX_FADV_NORMAL) #undef NO_FADV ret = posix_fadvise(fd, 0, 1024, POSIX_FADV_NORMAL); (void)ret; #endif #if defined(POSIX_FADV_SEQUENTIAL) #undef NO_FADV ret = posix_fadvise(fd, 0, 1024, POSIX_FADV_SEQUENTIAL); (void)ret; #endif #if defined(POSIX_FADV_RANDOM) #undef NO_FADV ret = posix_fadvise(fd, 0, 1024, POSIX_FADV_RANDOM); (void)ret; #endif #if defined(POSIX_FADV_NOREUSE) #undef NO_FADV ret = posix_fadvise(fd, 0, 1024, POSIX_FADV_NOREUSE); (void)ret; #endif #if defined(POSIX_FADV_WILLNEED) #undef NO_FADV ret = posix_fadvise(fd, 0, 1024, POSIX_FADV_WILLNEED); (void)ret; #endif #if defined(POSIX_FADV_DONTNEED) #undef NO_FADV ret = posix_fadvise(fd, 0, 1024, POSIX_FADV_DONTNEED); (void)ret; #endif #if defined(NO_FADV) #error no POSIX_FADV advice macros defined! #endif (void)close(fd); return err; }