57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Copyright (C) 2017 Denys Vlasenko <vda.linux@googlemail.com>
|
|
*
|
|
* Licensed under GPLv2, see file LICENSE in this source tree.
|
|
*/
|
|
//config:config PARTPROBE
|
|
//config: bool "partprobe (3.5 kb)"
|
|
//config: default y
|
|
//config: select PLATFORM_LINUX
|
|
//config: help
|
|
//config: Ask kernel to rescan partition table.
|
|
|
|
//applet:IF_PARTPROBE(APPLET_NOEXEC(partprobe, partprobe, BB_DIR_USR_SBIN, BB_SUID_DROP, partprobe))
|
|
|
|
//kbuild:lib-$(CONFIG_PARTPROBE) += partprobe.o
|
|
|
|
#include <linux/fs.h>
|
|
#include "libbb.h"
|
|
#ifndef BLKRRPART
|
|
# define BLKRRPART _IO(0x12,95)
|
|
#endif
|
|
|
|
//usage:#define partprobe_trivial_usage
|
|
//usage: "DEVICE..."
|
|
//usage:#define partprobe_full_usage "\n\n"
|
|
//usage: "Ask kernel to rescan partition table"
|
|
//
|
|
// partprobe (GNU parted) 3.2:
|
|
// -d, --dry-run Don't update the kernel
|
|
// -s, --summary Show a summary of devices and their partitions
|
|
|
|
int partprobe_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int partprobe_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
getopt32(argv, "");
|
|
argv += optind;
|
|
|
|
/* "partprobe" with no arguments just does nothing */
|
|
|
|
while (*argv) {
|
|
int fd = xopen(*argv, O_RDONLY);
|
|
/*
|
|
* Newer versions of parted scan partition tables themselves and
|
|
* use BLKPG ioctl (BLKPG_DEL_PARTITION / BLKPG_ADD_PARTITION)
|
|
* since this way kernel does not need to know
|
|
* partition table formats.
|
|
* We use good old BLKRRPART:
|
|
*/
|
|
ioctl_or_perror_and_die(fd, BLKRRPART, NULL, "%s", *argv);
|
|
close(fd);
|
|
argv++;
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|