source: MondoRescue/branches/3.2/mindi-busybox/coreutils/fsync.c@ 3232

/* 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 source tree.
 */

//usage:#define fsync_trivial_usage
//usage:       "[-d] FILE..."
//usage:#define fsync_full_usage "\n\n"
//usage:       "Write files' buffered blocks to disk\n"
//usage:     "\n    -d  Avoid syncing metadata"

#include "libbb.h"
#ifndef O_NOATIME
# define O_NOATIME 0
#endif

/* 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 = open_or_warn(*argv, O_NOATIME | O_NOCTTY | O_RDONLY);

        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;
}