diff options
author | kib <kib@FreeBSD.org> | 2016-08-29 05:37:03 +0000 |
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committer | kib <kib@FreeBSD.org> | 2016-08-29 05:37:03 +0000 |
commit | 09b81d30ae629d75d03972b872eab71e24605bb6 (patch) | |
tree | f0c2fcd24a02aa2f753b25937950603a6eabf3be /lib/libc | |
parent | fd2de0ec5da557cf8b56bdc4da12d66bbd506603 (diff) | |
download | FreeBSD-src-09b81d30ae629d75d03972b872eab71e24605bb6.zip FreeBSD-src-09b81d30ae629d75d03972b872eab71e24605bb6.tar.gz |
MFC r304209:
The fdatasync(2) call must be cancellation point.
Diffstat (limited to 'lib/libc')
-rw-r--r-- | lib/libc/include/libc_private.h | 2 | ||||
-rw-r--r-- | lib/libc/sys/Makefile.inc | 1 | ||||
-rw-r--r-- | lib/libc/sys/fdatasync.c | 46 | ||||
-rw-r--r-- | lib/libc/sys/interposing_table.c | 1 |
4 files changed, 50 insertions, 0 deletions
diff --git a/lib/libc/include/libc_private.h b/lib/libc/include/libc_private.h index 8c4d72d..cf346f1 100644 --- a/lib/libc/include/libc_private.h +++ b/lib/libc/include/libc_private.h @@ -228,6 +228,7 @@ enum { INTERPOS_wait6, INTERPOS_ppoll, INTERPOS_map_stacks_exec, + INTERPOS_fdatasync, INTERPOS_MAX }; @@ -318,6 +319,7 @@ int __sys_clock_gettime(__clockid_t, struct timespec *ts); int __sys_close(int); int __sys_connect(int, const struct sockaddr *, __socklen_t); int __sys_fcntl(int, int, ...); +int __sys_fdatasync(int); int __sys_fsync(int); __pid_t __sys_fork(void); int __sys_ftruncate(int, __off_t); diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc index a2be249..a37c566 100644 --- a/lib/libc/sys/Makefile.inc +++ b/lib/libc/sys/Makefile.inc @@ -37,6 +37,7 @@ INTERPOSED = \ close \ connect \ fcntl \ + fdatasync \ fsync \ fork \ kevent \ diff --git a/lib/libc/sys/fdatasync.c b/lib/libc/sys/fdatasync.c new file mode 100644 index 0000000..fed9791 --- /dev/null +++ b/lib/libc/sys/fdatasync.c @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2016 The FreeBSD Foundation. + * All rights reserved. + * + * Portions of this software were developed by Konstantin Belousov + * under sponsorship from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice(s), this list of conditions and the following disclaimer as + * the first lines of this file unmodified other than the possible + * addition of one or more copyright notices. + * 2. Redistributions in binary form must reproduce the above copyright + * notice(s), this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/fcntl.h> +#include <unistd.h> +#include "libc_private.h" + +int +fdatasync(int fd) +{ + + return (((int (*)(int))__libc_interposing[INTERPOS_fdatasync])(fd)); +} diff --git a/lib/libc/sys/interposing_table.c b/lib/libc/sys/interposing_table.c index 75bb280..1447e42 100644 --- a/lib/libc/sys/interposing_table.c +++ b/lib/libc/sys/interposing_table.c @@ -79,6 +79,7 @@ interpos_func_t __libc_interposing[INTERPOS_MAX] = { SLOT(wait6, __sys_wait6), SLOT(ppoll, __sys_ppoll), SLOT(map_stacks_exec, __libc_map_stacks_exec), + SLOT(fdatasync, __sys_fdatasync), }; #undef SLOT |