diff options
Diffstat (limited to 'coreutils')
| -rw-r--r-- | coreutils/Config.in | 6 | ||||
| -rw-r--r-- | coreutils/Kbuild | 1 | ||||
| -rw-r--r-- | coreutils/fsync.c | 41 |
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 help Wrap text to fit a specific width. +config FSYNC + bool "fsync" + default n + help + fsync is used to flush file-related cached blocks to disk. + config HEAD bool "head" 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-$(CONFIG_EXPR) += expr.o lib-$(CONFIG_EXPAND) += expand.o lib-$(CONFIG_FALSE) += false.o lib-$(CONFIG_FOLD) += fold.o +lib-$(CONFIG_FSYNC) += fsync.o lib-$(CONFIG_HEAD) += head.o lib-$(CONFIG_HOSTID) += hostid.o lib-$(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 @@ +/* vi: set sw=4 ts=4: */ +/* + * Mini fsync implementation for busybox + * + * Copyright (C) 2008 Nokia Corporation. All rights reserved. + * + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. + */ +#include "libbb.h" + +/* This is a NOFORK applet. Be very careful! */ + +int fsync_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int fsync_main(int argc UNUSED_PARAM, char **argv) +{ + int status; + int opts; + + opts = getopt32(argv, "d"); /* fdatasync */ + argv += optind; + if (!*argv) { + bb_show_usage(); + } + + status = EXIT_SUCCESS; + do { + int fd = open3_or_warn(*argv, O_NOATIME | O_NOCTTY | O_RDONLY, 0); + + if (fd == -1) { + status = EXIT_FAILURE; + continue; + } + if ((opts ? fdatasync(fd) : fsync(fd))) { + //status = EXIT_FAILURE; - do we want this? + bb_simple_perror_msg(*argv); + } + close(fd); + } while (*++argv); + + return status; +} |