X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=makedevs.c;h=5072095b532cab61e67ed556ed428e17c3283996;hb=e714bce003a1b0e2c49e58fe14af86abc8b31f23;hp=f7fbeb2fe848788fdaa84a53d650d299c3fd9473;hpb=e77ae3a2c0328590b43447550bdb1284650b8236;p=oweals%2Fbusybox.git

diff --git a/makedevs.c b/makedevs.c
index f7fbeb2fe..5072095b5 100644
--- a/makedevs.c
+++ b/makedevs.c
@@ -1,3 +1,4 @@
+/* vi: set sw=4 ts=4: */
 /*
  * public domain -- Dave 'Kill a Cop' Cinege <dcinege@psychosis.com>
  * 
@@ -5,7 +6,7 @@
  * Make ranges of device files quickly. 
  * known bugs: can't deal with alpha ranges
  */
- 
+
 #include "internal.h"
 #include <stdio.h>
 #include <stdlib.h>
@@ -15,60 +16,78 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 
-static const char makedevs_usage[] = 
-"makedevs 0.01 -- Create an entire range of device files\n\n"
-"\tmakedevs /dev/ttyS c 4 64 0 63        (ttyS0-ttyS63)\n"
-"\tmakedevs /dev/hda b 3 0 0 8 s         (hda,hda1-hda8)\n";
+static const char makedevs_usage[] =
+	"makedevs NAME TYPE MAJOR MINOR FIRST LAST [s]\n"
+#ifndef BB_FEATURE_TRIVIAL_HELP
+	"\nCreates a range of block or character special files\n\n"
+	"TYPEs include:\n"
+	"\tb:\tMake a block (buffered) device.\n"
+	"\tc or u:\tMake a character (un-buffered) device.\n"
+	"\tp:\tMake a named pipe. MAJOR and MINOR are ignored for named pipes.\n\n"
+	"FIRST specifies the number appended to NAME to create the first device.\n"
+	"LAST specifies the number of the last item that should be created.\n"
+	"If 's' is the last argument, the base device is created as well.\n\n"
+	"For example:\n"
+	"\tmakedevs /dev/ttyS c 4 66 2 63   ->  ttyS2-ttyS63\n"
+	"\tmakedevs /dev/hda b 3 0 0 8 s    ->  hda,hda1-hda8\n"
+#endif
+	;
 
-int
-makedevs_main(int argc, char * * argv)
+int makedevs_main(int argc, char **argv)
 {
 
-const char *basedev = argv[1];
-const char *type = argv[2];
-int major = atoi(argv[3]);
-int Sminor = atoi(argv[4]);
-int S = atoi(argv[5]);
-int E = atoi(argv[6]);
-int sbase = argc == 8 ? 1 : 0;
+	const char *basedev = argv[1];
+	const char *type = argv[2];
+	int major = atoi(argv[3]);
+	int Sminor = atoi(argv[4]);
+	int S = atoi(argv[5]);
+	int E = atoi(argv[6]);
+	int sbase = argc == 8 ? 1 : 0;
+
+	mode_t mode = 0;
+	dev_t dev = 0;
+	char devname[255];
+	char buf[255];
 
-mode_t mode = 0;
-dev_t dev = 0;
-char devname[255];
-char buf[255];
+	if (argc < 7 || *argv[1]=='-')
+		usage(makedevs_usage);
 
 	switch (type[0]) {
-		case 'c':
-			mode = S_IFCHR; break;
-		case 'b':
-			mode = S_IFBLK; break;
-		case 'f':
-			mode = S_IFIFO; break;
-		default:
-			usage( makedevs_usage);
-	}       
-	mode |= 0660; 
-
-	while ( S <= E ) {
-			
+	case 'c':
+		mode = S_IFCHR;
+		break;
+	case 'b':
+		mode = S_IFBLK;
+		break;
+	case 'f':
+		mode = S_IFIFO;
+		break;
+	default:
+		usage(makedevs_usage);
+	}
+	mode |= 0660;
+
+	while (S <= E) {
+
 		if (type[0] != 'f')
 			dev = (major << 8) | Sminor;
 		strcpy(devname, basedev);
-		
+
 		if (sbase == 0) {
-			sprintf(buf, "%d", S); 
+			sprintf(buf, "%d", S);
 			strcat(devname, buf);
 		} else {
 			sbase = 0;
 		}
-				
-		if (mknod (devname, mode, dev))
-			printf("Failed to create: %s\n", devname);		
-	
-		S++; Sminor++;
+
+		if (mknod(devname, mode, dev))
+			printf("Failed to create: %s\n", devname);
+
+		S++;
+		Sminor++;
 	}
 
-return 0;
+	return 0;
 }
 
 /*