using UID_MIN/GID_MIN values from /etc/login.def

1 files changed, 20 insertions, 0 deletions

diff --git a/mkuid.sh b/mkuid.sh
new file mode 100755
index 000000000..f03fdaf94
--- /dev/null
+++ b/mkuid.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+
+echo "extracting UID_MIN and GID_MIN"
+echo "#ifndef FIREJAIL_UIDS_H" > uids.h
+echo "#define FIREJAIL_UIDS_H" >> uids.h
+
+if [ -f /etc/login.defs ]
+then
+        echo "// using values extracted from /etc/login.defs" >> uids.h
+        UID_MIN=`awk '/^\s*UID_MIN\s*([0-9]*).*?$/ {print $2}' /etc/login.defs`
+        GID_MIN=`awk '/^\s*GID_MIN\s*([0-9]*).*?$/ {print $2}' /etc/login.defs`
+        echo "#define UID_MIN $UID_MIN" >> uids.h
+        echo "#define GID_MIN $GID_MIN" >> uids.h
+else
+        echo "// using default values" >> uids.h
+        echo "#define UID_MIN 1000" >> uids.h
+        echo "#define GID_MIN 1000" >> uids.h
+fi
+
+echo "#endif" >> uids.h