diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/alpha/fdatasync.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/alpha/fdatasync.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/fdatasync.c b/sysdeps/unix/sysv/linux/alpha/fdatasync.c new file mode 100644 index 0000000..7476961 --- /dev/null +++ b/sysdeps/unix/sysv/linux/alpha/fdatasync.c @@ -0,0 +1,64 @@ +/* fdatasync -- synchronize at least the data part of a file with + the underlying media. Linux version. + + Copyright (C) 2007-2014 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/>. */ + +#include <errno.h> +#include <unistd.h> + +#include <sysdep-cancel.h> +#include <sys/syscall.h> + +#include <kernel-features.h> + +static int +do_fdatasync (int fd) +{ +#ifdef __ASSUME_FDATASYNC + return INLINE_SYSCALL (fdatasync, 1, fd); +#elif defined __NR_fdatasync + static int __have_no_fdatasync; + + if (!__builtin_expect (__have_no_fdatasync, 0)) + { + int result = INLINE_SYSCALL (fdatasync, 1, fd); + if (__builtin_expect (result, 0) != -1 || errno != ENOSYS) + return result; + + __have_no_fdatasync = 1; + } +#endif + return INLINE_SYSCALL (fsync, 1, fd); +} + +int +__fdatasync (int fd) +{ + if (SINGLE_THREAD_P) + return do_fdatasync (fd); + + int oldtype = LIBC_CANCEL_ASYNC (); + + int result = do_fdatasync (fd); + + LIBC_CANCEL_RESET (oldtype); + + return result; +} + +weak_alias (__fdatasync, fdatasync) |