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.
15 int losetup_main(int argc, char **argv);
16 int losetup_main(int argc, char **argv)
20 unsigned long long offset = 0;
22 opt = getopt32(argc, argv, "do:", &opt_o);
26 if (opt == 0x3) // -d + -o (illegal)
29 if (opt == 0x1) { // -d
30 /* detach takes exactly one argument */
33 if (!del_loop(argv[0]))
35 bb_perror_nomsg_and_die();
39 offset = xatoull(opt_o);
44 if (set_loop(&argv[0], argv[1], offset) < 0)
45 bb_perror_nomsg_and_die();
46 } else if (argc == 1) {
47 char *s = query_loop(argv[0]);
48 if (!s) bb_perror_nomsg_and_die();
49 printf("%s: %s\n", argv[0], s);
50 if (ENABLE_FEATURE_CLEAN_UP) free(s);
52 char dev[sizeof(LOOP_NAME"0")] = LOOP_NAME"0";
54 for (c = '0'; c <= '9'; ++c) {
56 dev[sizeof(LOOP_NAME"0")-2] = c;
59 printf("%s: %s\n", dev, s);
60 if (ENABLE_FEATURE_CLEAN_UP) free(s);