Restrict Unix.environment in privileged contexts; add Unix.unsafe_environment (#1217)

* Restrict Unix.environment to return an empty array in privileged environments.

* Add Unix.unsafe_environment.

Unix.unsafe_environment is an analogue of Unix.environment that
returns the process environment regardless of privileges.

1 files changed, 6 insertions, 0 deletions

diff --git a/configure b/configure
index b671ca2c3e..44a7b099b4 100755
--- a/configure
+++ b/configure
@@ -1503,6 +1503,12 @@ if sh ./hasgot accept4; then
   echo "#define HAS_ACCEPT4" >> s.h
 fi
 
+if sh ./hasgot getauxval; then
+  inf "getauxval() found."
+  echo "#define HAS_GETAUXVAL" >> s.h
+fi
+
+
 # Determine if the debugger is supported
 
 if test -n "$with_debugger"; then