From 34c265f01c8b189e7de4e73fb7ecb0e63a004c51 Mon Sep 17 00:00:00 2001
From: Ruediger Meier
Date: Thu, 22 May 2014 09:19:08 +0200
Subject: setarch: flush output streams before exec

This fixes the following (non-deterministic) discrepancy:

$ setarch x86_64 -RFZLvXBIST3 --uname-2.6 echo success
Switching on READ_IMPLIES_EXEC.
Switching on ADDR_LIMIT_32BIT.
Switching on SHORT_INODE.
Switching on WHOLE_SECONDS.
Switching on STICKY_TIMEOUTS.
Switching on ADDR_LIMIT_3GB.
Switching on UNAME26.
success

$ setarch x86_64 -RFZLvXBIST3 --uname-2.6 echo success  &> /tmp/bla; cat /tmp/bla
success

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
---
 sys-utils/setarch.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'sys-utils/setarch.c')

diff --git a/sys-utils/setarch.c b/sys-utils/setarch.c
index 957bb2b03..f957c7975 100644
--- a/sys-utils/setarch.c
+++ b/sys-utils/setarch.c
@@ -356,6 +356,9 @@ int main(int argc, char *argv[])
   if (set_arch(p, options, 0))
     err(EXIT_FAILURE, _("Failed to set personality to %s"), p);
 
+  /* flush all output streams before exec */
+  fflush(NULL);
+
   if (!argc) {
     execl("/bin/sh", "-sh", NULL);
     err(EXIT_FAILURE, _("failed to execute %s"), "/bin/sh");
-- 
cgit v1.2.3-55-g7522