X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fopenssl%2Fcrypto.c;h=072bf7ab763a0bd3eea19e54971c995e95a7bcab;hb=3ee0d5dddb56a13b8f3c50637e3cd075c701c9aa;hp=5b866b0b0293c34c8198872f51fa4bbb59b80977;hpb=3df86ef17bce9f24c3dad79ccc2b17aa6e93ea34;p=tinc

diff --git a/src/openssl/crypto.c b/src/openssl/crypto.c
index 5b866b0b..072bf7ab 100644
--- a/src/openssl/crypto.c
+++ b/src/openssl/crypto.c
@@ -31,8 +31,11 @@ static int random_fd = -1;
 
 static void random_init(void) {
 	random_fd = open("/dev/urandom", O_RDONLY);
-	if(random_fd < 0)
+
+	if(random_fd < 0) {
 		random_fd = open("/dev/random", O_RDONLY);
+	}
+
 	if(random_fd < 0) {
 		fprintf(stderr, "Could not open source of random numbers: %s\n", strerror(errno));
 		abort();
@@ -43,15 +46,21 @@ static void random_exit(void) {
 	close(random_fd);
 }
 
-void randomize(void *out, size_t outlen) {
+void randomize(void *vout, size_t outlen) {
+	char *out = vout;
+
 	while(outlen) {
-		size_t len = read(random_fd, out, outlen);
+		ssize_t len = read(random_fd, out, outlen);
+
 		if(len <= 0) {
-			if(errno == EAGAIN || errno == EINTR)
+			if(len == -1 && (errno == EAGAIN || errno == EINTR)) {
 				continue;
+			}
+
 			fprintf(stderr, "Could not read random numbers: %s\n", strerror(errno));
 			abort();
 		}
+
 		out += len;
 		outlen -= len;
 	}