1 /* vi: set sw=4 ts=4: */
3 * Mini losetup implementation for busybox
5 * Copyright (C) 2002 Matt Kraai.
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
12 int losetup_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
13 int losetup_main(int argc, char **argv)
15 char dev[] = LOOP_NAME"0";
19 unsigned long long offset = 0;
21 /* max 2 args, all opts are mutually exclusive */
22 opt_complementary = "?2:d--of:o--df:f-do";
23 opt = getopt32(argv, "do:f", &opt_o);
28 offset = xatoull(opt_o);
30 if (opt == 0x4 && argc) // -f does not take any argument
33 if (opt == 0x1) { // -d
34 /* detach takes exactly one argument */
37 if (del_loop(argv[0]))
38 bb_simple_perror_msg_and_die(argv[0]);
44 if (set_loop(&argv[0], argv[1], offset) < 0)
45 bb_simple_perror_msg_and_die(argv[0]);
51 s = query_loop(argv[0]);
53 bb_simple_perror_msg_and_die(argv[0]);
54 printf("%s: %s\n", argv[0], s);
55 if (ENABLE_FEATURE_CLEAN_UP)
60 /* -o, -f or no option */
70 printf("%s: %s\n", dev, s);
71 if (ENABLE_FEATURE_CLEAN_UP)
75 if (++dev[sizeof(dev) - 2] > '9')