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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/common/sync_filesystem.h | |
parent | Initial commit. (diff) | |
download | ceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/common/sync_filesystem.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/common/sync_filesystem.h b/src/common/sync_filesystem.h new file mode 100644 index 000000000..f457f655d --- /dev/null +++ b/src/common/sync_filesystem.h @@ -0,0 +1,56 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2011 New Dream Network + * + * This is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software + * Foundation. See file COPYING. + * + */ + +#ifndef CEPH_SYNC_FILESYSTEM_H +#define CEPH_SYNC_FILESYSTEM_H + +#include <unistd.h> + +#if defined(__linux__) +#include <sys/ioctl.h> +#include <syscall.h> +#include "os/fs/btrfs_ioctl.h" +#endif + +inline int sync_filesystem(int fd) +{ + /* On Linux, newer versions of glibc have a function called syncfs that + * performs a sync on only one filesystem. If we don't have this call, we + * have to fall back on sync(), which synchronizes every filesystem on the + * computer. */ +#ifdef HAVE_SYS_SYNCFS + if (syncfs(fd) == 0) + return 0; +#elif defined(SYS_syncfs) + if (syscall(SYS_syncfs, fd) == 0) + return 0; +#elif defined(__NR_syncfs) + if (syscall(__NR_syncfs, fd) == 0) + return 0; +#endif + +#if defined(HAVE_SYS_SYNCFS) || defined(SYS_syncfs) || defined(__NR_syncfs) + else if (errno == ENOSYS) { + sync(); + return 0; + } else { + return -errno; + } +#else + sync(); + return 0; +#endif +} + +#endif |