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authorDenis Vlasenko2006-09-22 14:53:41 +0000
committerDenis Vlasenko2006-09-22 14:53:41 +0000
commit27ee7ba95e9735e34ca99566686ed16f6f924158 (patch)
tree786bc190746590e1d6f0c8319bb774152eeb7d07 /util-linux/losetup.c
parent099efbf99e2cedfb1d0edf10c9447297554cf584 (diff)
downloadbusybox-27ee7ba95e9735e34ca99566686ed16f6f924158.zip
busybox-27ee7ba95e9735e34ca99566686ed16f6f924158.tar.gz
losetup: getopt_ulflags'ification + small fix for perror_nomsg
Diffstat (limited to 'util-linux/losetup.c')
-rw-r--r--util-linux/losetup.c68
1 files changed, 35 insertions, 33 deletions
diff --git a/util-linux/losetup.c b/util-linux/losetup.c
index 3c97984..af0b03a 100644
--- a/util-linux/losetup.c
+++ b/util-linux/losetup.c
@@ -12,39 +12,41 @@
#include "busybox.h"
-int losetup_main (int argc, char **argv)
+int losetup_main(int argc, char **argv)
{
- int offset = 0;
-
- /* This will need a "while(getopt()!=-1)" loop when we can have more than
- one option, but for now we can't. */
- switch(getopt(argc,argv, "do:")) {
- case 'd':
- /* detach takes exactly one argument */
- if(optind+1!=argc) bb_show_usage();
- if(!del_loop(argv[optind])) return EXIT_SUCCESS;
-die_failed:
- bb_perror_msg_and_die("%s",argv[optind]);
-
- case 'o':
- offset = bb_xparse_number (optarg, NULL);
- /* Fall through to do the losetup */
- case -1:
- /* losetup takes two argument:, loop_device and file */
- if(optind+2==argc) {
- if(set_loop(&argv[optind], argv[optind + 1], offset)>=0)
- return EXIT_SUCCESS;
- else goto die_failed;
- }
- if(optind+1==argc) {
- char *s=query_loop(argv[optind]);
- if (!s) goto die_failed;
- printf("%s: %s\n",argv[optind],s);
- if(ENABLE_FEATURE_CLEAN_UP) free(s);
+ unsigned long opt;
+ char *opt_o;
+ int offset = 0;
+
+ opt = bb_getopt_ulflags(argc, argv, "do:", &opt_o);
+ argc -= optind;
+ argv += optind;
+
+ if (opt == 0x3) bb_show_usage(); // -d and -o (illegal)
+
+ 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 = bb_xparse_number(opt_o, NULL);
+
+ /* -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
+ bb_show_usage();
return EXIT_SUCCESS;
- }
- break;
- }
- bb_show_usage();
- return EXIT_FAILURE;
}