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-rw-r--r--util-linux/dmesg.c56
1 files changed, 21 insertions, 35 deletions
diff --git a/util-linux/dmesg.c b/util-linux/dmesg.c
index df2bce713..961e532b0 100644
--- a/util-linux/dmesg.c
+++ b/util-linux/dmesg.c
@@ -44,50 +44,36 @@ static const char dmesg_usage[] = "dmesg [-c] [-n LEVEL] [-s SIZE]\n"
int dmesg_main(int argc, char **argv)
{
- char *buf;
+ char *buf, c;
int bufsize = 8196;
int i;
int n;
int level = 0;
int lastc;
int cmd = 3;
- int stopDoingThat;
- argc--;
- argv++;
-
- /* Parse any options */
- while (argc && **argv == '-') {
- stopDoingThat = FALSE;
- while (stopDoingThat == FALSE && *++(*argv)) {
- switch (**argv) {
- case 'c':
- cmd = 4;
- break;
- case 'n':
- cmd = 8;
- if (--argc == 0)
- goto end;
- level = atoi(*(++argv));
- if (--argc > 0)
- ++argv;
- stopDoingThat = TRUE;
- break;
- case 's':
- if (--argc == 0)
- goto end;
- bufsize = atoi(*(++argv));
- if (--argc > 0)
- ++argv;
- stopDoingThat = TRUE;
- break;
- default:
- goto end;
- }
+ while ((c = getopt(argc, argv, "cn:s:")) != EOF) {
+ switch (c) {
+ case 'c':
+ cmd = 4;
+ break;
+ case 'n':
+ cmd = 8;
+ if (optarg == NULL)
+ usage(dmesg_usage);
+ level = atoi(optarg);
+ break;
+ case 's':
+ if (optarg == NULL)
+ usage(dmesg_usage);
+ bufsize = atoi(optarg);
+ break;
+ default:
+ usage(dmesg_usage);
}
- }
+ }
- if (argc > 1) {
+ if (optind < argc) {
goto end;
}