sbase

commit 7adf4f380a05dd88a61aadfa9c473473e012bbc1
parent 18712b203227cc60162bfddc2c7165a5ec393135
Author: David Galos <galosd83@students.rowan.edu>
Date:   Tue,  9 Jul 2013 19:40:28 -0400

Fixing zero-bye append in readlink. Thanks, Willem van de Krol

Diffstat:
M
readlink.c
 | 
4
+++-

1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/readlink.c b/readlink.c
@@ -20,6 +20,7 @@ main(int argc, char *argv[])
 	char buf[PATH_MAX];
 	bool nflag = false;
 	bool fflag = false;
+	ssize_t n;
 
 	ARGBEGIN {
 	case 'f':
@@ -42,8 +43,9 @@ main(int argc, char *argv[])
 		if (realpath(argv[0], buf) == NULL)
 			exit(1);
 	} else {
-		if (readlink(argv[0], buf, sizeof(buf)) < 0)
+		if ((n = readlink(argv[0], buf, sizeof(buf) - 1)) < 0)
 			exit(1);
+		buf[n] = '\0';
 	}
 
 	printf("%s", buf);