From: Pavel Roskin <proski@gnu.org>
Date: Thu, 15 Jun 2000 18:04:40 +0000 (-0000)
Subject: ln: fixed command line parser. Added support for "--"
X-Git-Tag: 0_45~44
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=2e965239ee4f19f86e377ade94574c3c73a32425;p=oweals%2Fbusybox.git

ln: fixed command line parser. Added support for "--"
---

diff --git a/Changelog b/Changelog
index d5c72684e..e3548257a 100644
--- a/Changelog
+++ b/Changelog
@@ -61,7 +61,8 @@
 	* Simplified freeramdisk and added argument checking -- Pavel Roskin. 
 	* Fixed segfault caused by "touch -c"
 	* Fixed segfault caused by "rm -f"
-	* Fixed segfault caused by "ln -s -s" and similar abuses.
+	* Fixed segfault caused by "ln -s -s" and similar abuses. Further fixes
+	    and "--" support from Pavel Roskin.
 	* Fixed segfault caused by "cp -a -a" and similar abuses.
 	* Implemented "rm -- <foo>". Implementation fixed by Pavel Roskin.
 	* "which" rewritten to use stat(). Fixes to improve its compatability
diff --git a/coreutils/ln.c b/coreutils/ln.c
index d4fa47306..634c9905d 100644
--- a/coreutils/ln.c
+++ b/coreutils/ln.c
@@ -51,16 +51,14 @@ extern int ln_main(int argc, char **argv)
 {
 	char *linkName;
 	int linkIntoDirFlag;
+	int stopIt = FALSE;
 
-	if (argc < 3) {
-		usage(ln_usage);
-	}
 	argc--;
 	argv++;
 
 	/* Parse any options */
-	while (--argc >= 0 && *argv && **argv) {
-		while (**argv == '-') {
+	while (argc > 0 && stopIt == FALSE) {
+		if (**argv == '-') {
 			while (*++(*argv))
 				switch (**argv) {
 					case 's':
@@ -72,15 +70,21 @@ extern int ln_main(int argc, char **argv)
 					case 'n':
 						followLinks = FALSE;
 						break;
+					case '-':
+						stopIt = TRUE;
+						break;
 					default:
 						usage(ln_usage);
 				}
+			argc--;
+			argv++;
 		}
-		argv++;
+		else
+			break;
 	}
 
-	if (argc < 1) {
-		fatalError("ln: missing file argument\n");
+	if (argc < 2) {
+		usage(ln_usage);
 	}
 
 	linkName = argv[argc - 1];
diff --git a/ln.c b/ln.c
index d4fa47306..634c9905d 100644
--- a/ln.c
+++ b/ln.c
@@ -51,16 +51,14 @@ extern int ln_main(int argc, char **argv)
 {
 	char *linkName;
 	int linkIntoDirFlag;
+	int stopIt = FALSE;
 
-	if (argc < 3) {
-		usage(ln_usage);
-	}
 	argc--;
 	argv++;
 
 	/* Parse any options */
-	while (--argc >= 0 && *argv && **argv) {
-		while (**argv == '-') {
+	while (argc > 0 && stopIt == FALSE) {
+		if (**argv == '-') {
 			while (*++(*argv))
 				switch (**argv) {
 					case 's':
@@ -72,15 +70,21 @@ extern int ln_main(int argc, char **argv)
 					case 'n':
 						followLinks = FALSE;
 						break;
+					case '-':
+						stopIt = TRUE;
+						break;
 					default:
 						usage(ln_usage);
 				}
+			argc--;
+			argv++;
 		}
-		argv++;
+		else
+			break;
 	}
 
-	if (argc < 1) {
-		fatalError("ln: missing file argument\n");
+	if (argc < 2) {
+		usage(ln_usage);
 	}
 
 	linkName = argv[argc - 1];