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;
         }