From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sat, 1 Jul 2023 12:23:40 +0000 (+0200)
Subject: hurd: Make getrandom return ENOSYS when /dev/random is not set up
X-Git-Tag: glibc-2.38~90
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=494714d4073502145689eafc197f5ab6ffe4c3e5;p=thirdparty%2Fglibc.git

hurd: Make getrandom return ENOSYS when /dev/random is not set up

So that callers (e.g. __arc4random_buf) don't try calling it again.
---

diff --git a/sysdeps/mach/hurd/getrandom.c b/sysdeps/mach/hurd/getrandom.c
index 0d28f5c2602..a7706afe82d 100644
--- a/sysdeps/mach/hurd/getrandom.c
+++ b/sysdeps/mach/hurd/getrandom.c
@@ -123,8 +123,13 @@ again:
                                                     open_flags, 0);
       __libc_rwlock_unlock (lock);
       if (!MACH_PORT_VALID (server))
-        /* No luck.  */
-        return -1;
+	{
+	  if (errno == ENOENT)
+	    /* No translator set up, we won't have support for it.  */
+	    errno = ENOSYS;
+	  /* No luck.  */
+	  return -1;
+	}
 
       goto again;
     }