From fad7f319c9739c0935c4d5afbe17e24b73aa6539 Mon Sep 17 00:00:00 2001
From: dougb <dougb@FreeBSD.org>
Date: Mon, 10 Jun 2002 07:16:42 +0000
Subject: [PATCH] Go back to taking the user's umask into account. Thanks to
 Alfred for hatching the idea of using dc, and Giorgos (keramida) for
 incubating it.

This also reverses most of the previous commit which took out or
modified the text about umask stuff.
---
 usr.sbin/mergemaster/mergemaster.sh | 54 +++++++++++++++++------------
 1 file changed, 31 insertions(+), 23 deletions(-)

diff --git a/usr.sbin/mergemaster/mergemaster.sh b/usr.sbin/mergemaster/mergemaster.sh
index 9c89e0fcec88..08dc42595ae1 100755
--- a/usr.sbin/mergemaster/mergemaster.sh
+++ b/usr.sbin/mergemaster/mergemaster.sh
@@ -559,36 +559,36 @@ find ${TEMPROOT}/usr/obj -type f -delete 2>/dev/null
 
 # Get ready to start comparing files
 
-# Check umask if we are not doing an autorun
+# Check umask if not specified on the command line,
+# and we are not doing an autorun
 #
-case "${AUTO_RUN}" in
-'')
-  case "${NEW_UMASK}" in
-  '')
-    USER_UMASK=`umask`
-    ;;
-  *)
-    USER_UMASK="${NEW_UMASK}"
-    ;;
-  esac
-
+if [ -z "${NEW_UMASK}" -a -z "${AUTO_RUN}" ]; then
+  USER_UMASK=`umask`
   case "${USER_UMASK}" in
   0022|022) ;;
   *)
     echo ''
-    echo " *** Your umask is currently set to ${USER_UMASK}.  This script installs"
-    echo '     all files with the same user, group, and modes that they'
-    echo "     are created with by ${SOURCEDIR}/Makefile."
+    echo " *** Your umask is currently set to ${USER_UMASK}.  By default, this script"
+    echo "     installs all files with the same user, group and modes that"
+    echo "     they are created with by ${SOURCEDIR}/Makefile, compared to"
+    echo "     a umask of 022.  This umask allows world read permission when"
+    echo "     the file's default permissions have it."
     echo ''
-    echo '     If you would like different permissions for the files or'
-    echo '     directories, you will have to set them after installation.'
+    echo "     No world permissions can sometimes cause problems.  A umask of"
+    echo "     022 will restore the default behavior, but is not mandatory."
+    echo "     /etc/master.passwd is a special case.  Its file permissions"
+    echo "     will be 600 (rw-------) if installed."
     echo ''
-    press_to_continue
+    echo -n "What umask should I use? [${USER_UMASK}] "
+    read NEW_UMASK
+
+    NEW_UMASK="${NEW_UMASK:-$USER_UMASK}"
     ;;
   esac
   echo ''
-  ;;
-esac
+fi
+
+CONFIRMED_UMASK=${NEW_UMASK:-0022}
 
 # Warn users who still have ${DESTDIR}/etc/sysconfig
 #
@@ -622,7 +622,7 @@ if [ -e "${DESTDIR}/etc/sysconfig" ]; then
   esac
 fi
 
-# Use the mode information to install the files
+# Use the umask/mode information to install the files
 # Create directories as needed
 #
 do_install_and_rm () {
@@ -630,6 +630,14 @@ do_install_and_rm () {
   rm -f "${2}"
 }
 
+# 4095 = "obase=10;ibase=8;07777" | bc
+find_mode () {
+  local OCTAL
+  OCTAL=$(( ~$(echo "obase=10; ibase=8; ${CONFIRMED_UMASK}" | bc) & 4095 &
+    $(echo "obase=10; ibase=8; $(stat -f "%OMp%OLp" ${1})" | bc) )) 
+  printf "%04o\n" ${OCTAL}
+}
+
 mm_install () {
   local INSTALL_DIR
   INSTALL_DIR=${1#.}
@@ -642,11 +650,11 @@ mm_install () {
   esac
 
   if [ -n "${DESTDIR}${INSTALL_DIR}" -a ! -d "${DESTDIR}${INSTALL_DIR}" ]; then
-    DIR_MODE=`stat -f "%OMp%OLp" "${TEMPROOT}/${INSTALL_DIR}"`
+    DIR_MODE=`find_mode "${TEMPROOT}/${INSTALL_DIR}"`
     install -d -o root -g wheel -m "${DIR_MODE}" "${DESTDIR}${INSTALL_DIR}"
   fi
 
-  FILE_MODE=`stat -f "%OMp%OLp" "${1}"`
+  FILE_MODE=`find_mode "${1}"`
 
   if [ ! -x "${1}" ]; then
     case "${1#.}" in