reading negative size is wrong, zero is ok

2009-09-25 14:53:31 -07:00
parent 9bace01559
commit ec263fc5a4
1 changed files with 3 additions and 1 deletions
--- a/lib/hcrypto/rand-unix.c
+++ b/lib/hcrypto/rand-unix.c
@@ -95,8 +95,10 @@ unix_bytes(unsigned char *outdata, int size)
    ssize_t count;
    int once = 0;

-    if (size <= 0)
+    if (size < 0)
 	return 0;
+    else if (size == 0)
+	return 1;

    HEIMDAL_MUTEX_lock(&random_mutex);
    if (random_fd == -1) {