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authorDenys Vlasenko <vda.linux@googlemail.com>2009-06-18 08:20:02 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2009-06-18 08:20:02 +0200
commit14f6f0ad4a9d07f927b96b08c20d7ea546318517 (patch)
treeb15fa67c342657d8628814ade790fc23665797a4 /coreutils
parent7eaf58d9586404b4d664f23f3c9f335f053db6b0 (diff)
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fsync: new applet by Pekka Pessi (Pekka.Pessi AT nokia.com)
function old new delta fsync_main - 128 +128 fdatasync - 39 +39 packed_usage 26596 26622 +26 applet_names 2098 2104 +6 applet_main 1240 1244 +4 applet_nameofs 620 622 +2 applet_install_loc 155 156 +1 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 5/0 up/down: 206/0) Total: 206 bytes Signed-off-by: Alexander Shishkin <virtuoso@slind.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'coreutils')
-rw-r--r--coreutils/Config.in6
-rw-r--r--coreutils/Kbuild1
-rw-r--r--coreutils/fsync.c41
3 files changed, 48 insertions, 0 deletions
diff --git a/coreutils/Config.in b/coreutils/Config.in
index b047ce5e2..88642d71e 100644
--- a/coreutils/Config.in
+++ b/coreutils/Config.in
@@ -249,6 +249,12 @@ config FOLD
249 help 249 help
250 Wrap text to fit a specific width. 250 Wrap text to fit a specific width.
251 251
252config FSYNC
253 bool "fsync"
254 default n
255 help
256 fsync is used to flush file-related cached blocks to disk.
257
252config HEAD 258config HEAD
253 bool "head" 259 bool "head"
254 default n 260 default n
diff --git a/coreutils/Kbuild b/coreutils/Kbuild
index 57100a9cf..4d6bde7b9 100644
--- a/coreutils/Kbuild
+++ b/coreutils/Kbuild
@@ -36,6 +36,7 @@ lib-$(CONFIG_EXPR) += expr.o
36lib-$(CONFIG_EXPAND) += expand.o 36lib-$(CONFIG_EXPAND) += expand.o
37lib-$(CONFIG_FALSE) += false.o 37lib-$(CONFIG_FALSE) += false.o
38lib-$(CONFIG_FOLD) += fold.o 38lib-$(CONFIG_FOLD) += fold.o
39lib-$(CONFIG_FSYNC) += fsync.o
39lib-$(CONFIG_HEAD) += head.o 40lib-$(CONFIG_HEAD) += head.o
40lib-$(CONFIG_HOSTID) += hostid.o 41lib-$(CONFIG_HOSTID) += hostid.o
41lib-$(CONFIG_ID) += id.o 42lib-$(CONFIG_ID) += id.o
diff --git a/coreutils/fsync.c b/coreutils/fsync.c
new file mode 100644
index 000000000..f00803c5b
--- /dev/null
+++ b/coreutils/fsync.c
@@ -0,0 +1,41 @@
1/* vi: set sw=4 ts=4: */
2/*
3 * Mini fsync implementation for busybox
4 *
5 * Copyright (C) 2008 Nokia Corporation. All rights reserved.
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 */
9#include "libbb.h"
10
11/* This is a NOFORK applet. Be very careful! */
12
13int fsync_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
14int fsync_main(int argc UNUSED_PARAM, char **argv)
15{
16 int status;
17 int opts;
18
19 opts = getopt32(argv, "d"); /* fdatasync */
20 argv += optind;
21 if (!*argv) {
22 bb_show_usage();
23 }
24
25 status = EXIT_SUCCESS;
26 do {
27 int fd = open3_or_warn(*argv, O_NOATIME | O_NOCTTY | O_RDONLY, 0);
28
29 if (fd == -1) {
30 status = EXIT_FAILURE;
31 continue;
32 }
33 if ((opts ? fdatasync(fd) : fsync(fd))) {
34 //status = EXIT_FAILURE; - do we want this?
35 bb_simple_perror_msg(*argv);
36 }
37 close(fd);
38 } while (*++argv);
39
40 return status;
41}