text: /* 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 (3.6 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;
  }
  