1 files changed, 10 insertions, 4 deletions
diff --git a/lib/path.c b/lib/path.c
index 1a623bc6d6..eaa6d881c6 100644
--- a/lib/path.c
+++ b/lib/path.c
@@ -244,12 +244,18 @@ path_read_cpulist(int maxcpus, const char *path, ...)
 	return set;
 }
 
-void
+int
 path_set_prefix(const char *prefix)
 {
-	prefixlen = strlen(prefix);
-	strncpy(pathbuf, prefix, sizeof(pathbuf));
-	pathbuf[sizeof(pathbuf) - 1] = '\0';
+	size_t len = strlen(prefix);
+
+	if (len >= sizeof(pathbuf) - 1) {
+		errno = ENAMETOOLONG;
+		return -1;
+	}
+	prefixlen = len;
+	strcpy(pathbuf, prefix);
+	return 0;
 }
 
 #endif /* HAVE_CPU_SET_T */