mirror of
https://github.com/sheumann/hush.git
synced 2024-12-28 22:30:05 +00:00
65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Mini losetup implementation for busybox
|
|
*
|
|
* Copyright (C) 2002 Matt Kraai.
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
|
*/
|
|
|
|
#include <getopt.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "busybox.h"
|
|
|
|
int losetup_main(int argc, char **argv)
|
|
{
|
|
unsigned opt;
|
|
char *opt_o;
|
|
unsigned long long offset = 0;
|
|
|
|
opt = getopt32(argc, argv, "do:", &opt_o);
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (opt == 0x3) // -d + -o (illegal)
|
|
bb_show_usage();
|
|
|
|
if (opt == 0x1) { // -d
|
|
/* detach takes exactly one argument */
|
|
if (argc != 1)
|
|
bb_show_usage();
|
|
if (!del_loop(argv[0]))
|
|
return EXIT_SUCCESS;
|
|
bb_perror_nomsg_and_die();
|
|
}
|
|
|
|
if (opt == 0x2) // -o
|
|
offset = xatoull(opt_o);
|
|
|
|
/* -o or no option */
|
|
|
|
if (argc == 2) {
|
|
if (set_loop(&argv[0], argv[1], offset) < 0)
|
|
bb_perror_nomsg_and_die();
|
|
} else if (argc == 1) {
|
|
char *s = query_loop(argv[0]);
|
|
if (!s) bb_perror_nomsg_and_die();
|
|
printf("%s: %s\n", argv[0], s);
|
|
if (ENABLE_FEATURE_CLEAN_UP) free(s);
|
|
} else {
|
|
char dev[sizeof(LOOP_NAME"0")] = LOOP_NAME"0";
|
|
char c;
|
|
for (c = '0'; c <= '9'; ++c) {
|
|
char *s;
|
|
dev[sizeof(LOOP_NAME"0")-2] = c;
|
|
s = query_loop(dev);
|
|
if (s) {
|
|
printf("%s: %s\n", dev, s);
|
|
if (ENABLE_FEATURE_CLEAN_UP) free(s);
|
|
}
|
|
}
|
|
}
|
|
return EXIT_SUCCESS;
|
|
}
|