0007-scratchbox2-Allow-specifying-of-nsswitch.conf-path.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Bidar?= <bjorn.bidar@jolla.com>
Date: Tue, 31 Aug 2021 01:51:17 +0300
Subject: [PATCH] (scratchbox2) Allow specifying of nsswitch.conf path

This patch makes location of the /etc/nsswitch.conf file
to be run-time configurable via an environment variable.

This is needed for correct operation with Scratchbox 2.
Without this, the sb2-virtualized environment will
always read /etc/nsswitch.conf from the host.
---
 nss/nsswitch.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/nss/nsswitch.c b/nss/nsswitch.c
index c4a9ffb5750436ad55262aad9fbd7fd1401a8bc4..eac5970d519879888776d4f031c7d0f4fcd1f475 100644
--- a/nss/nsswitch.c
+++ b/nss/nsswitch.c
@@ -50,6 +50,8 @@
 # define DEFAULT_DEFCONFIG "files"
 #endif
 
+#include <unistd.h> /* __libc_enable_secure */
+
 /* Prototypes for the local functions.  */
 static name_database *nss_parse_file (const char *fname);
 static name_database_entry *nss_getline (char *line);
@@ -131,8 +133,16 @@ __nss_database_lookup2 (const char *database, const char *alternate_name,
 
   /* Are we initialized yet?  */
   if (service_table == NULL)
+  {
+    const char *ext_nss_config_file = NULL;
+    if (__libc_enable_secure == 0)
+    {
+        ext_nss_config_file = getenv ("NSSWITCH_CONF_PATH");
+    }
     /* Read config file.  */
-    service_table = nss_parse_file (_PATH_NSSWITCH_CONF);
+    service_table = nss_parse_file (ext_nss_config_file ?
+        ext_nss_config_file : _PATH_NSSWITCH_CONF);
+  }
 
   /* Test whether configuration data is available.  */
   if (service_table != NULL)