https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=2519f0ef0c24e4a0fec98b58e6f3481d5dd57acd
commit 2519f0ef0c24e4a0fec98b58e6f3481d5dd57acd Author: Corinna Vinschen <[email protected]> Date: Sun Mar 20 22:29:03 2016 +0100 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 <[email protected]> Diff: --- winsup/cygwin/random.cc | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) diff --git a/winsup/cygwin/random.cc b/winsup/cygwin/random.cc index fe1ac08..8cccade 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;
