From e99182dab3093f1645f9e4ff216aa752d7443fb1 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Thu, 1 Jan 2026 13:47:45 +0000
Subject:  Save/restore errno in all safe wrappers

---
 src/librandom/random_buf_early.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/librandom/random_buf_early.c')

diff --git a/src/librandom/random_buf_early.c b/src/librandom/random_buf_early.c
index d14cd24..8af75b3 100644
--- a/src/librandom/random_buf_early.c
+++ b/src/librandom/random_buf_early.c
@@ -24,6 +24,7 @@ void random_buf_early (char *s, size_t n)
 {
   static int broken = 0 ;
   if (broken) goto bleh ;
+  int e = errno ;
   while (n)
   {
     ssize_t r = getrandom(s, n, GRND_INSECURE) ;
@@ -35,9 +36,11 @@ void random_buf_early (char *s, size_t n)
     s += r ;
     n -= r ;
   }
+  errno = e ;
   return ;
  breakit:
   broken = 1 ;
+  errno = e ;
  bleh:
   random_devurandom(s, n) ;
 }
-- 
cgit v1.3.1