srandom: Replace accessing /dev/random by equivalent getentropy call

/dev/random calls getentropy.  So there's no good reason to go out of
our way to open /dev/random just to call getentropy anyway.

	* random.cc (srandomdev): Drop opening /dev/random in favor of
	calling getentropy.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

1 files changed, 1 insertions, 10 deletions

diff --git a/winsup/cygwin/random.cc b/winsup/cygwin/random.cc
index fe1ac08fd..8cccadeef 100644
--- a/winsup/cygwin/random.cc
+++ b/winsup/cygwin/random.cc
@@ -299,7 +299,6 @@ dummy (unsigned volatile long *x)
 void
 srandomdev()
 {
-	int fd, done;
 	size_t len;
 
 	if (rand_type == TYPE_0)
@@ -307,15 +306,7 @@ srandomdev()
 	else
 		len = rand_deg * sizeof state[0];
 
-	done = 0;
-	fd = open("/dev/random", O_RDONLY, 0);
-	if (fd >= 0) {
-		if (read(fd, (void *) state, len) == (ssize_t) len)
-			done = 1;
-		close(fd);
-	}
-
-	if (!done) {
+	if (getentropy ((void *) state, len)) {
 		struct timeval tv;
 		unsigned long junk;