Update to git-pbuilder 1.27

This adds support for creating backport build environments.

Thanks: Russ Allbery

diff --git a/bin/git-pbuilder b/bin/git-pbuilder
old mode 100755 (executable)
new mode 100644 (file)
index 86268a1..6bd7e02
--- a/bin/git-pbuilder
+++ b/bin/git-pbuilder
@@ -1,11 +1,11 @@
 #!/bin/sh
-# $Id: git-pbuilder,v 1.25 2011/12/25 21:17:51 eagle Exp $
+# $Id: git-pbuilder,v 1.27 2012/01/13 04:12:35 eagle Exp $
 #
 # git-pbuilder -- Wrapper around pbuilder for git-buildpackage
 #
 # Written by Russ Allbery <rra@stanford.edu>
 # Based on the example in the git-buildpackage documentation
-# Copyright 2008, 2009, 2010, 2011
+# Copyright 2008, 2009, 2010, 2011, 2012
 #     The Board of Trustees of the Leland Stanford Junior University
 #
 # Permission to use, copy, modify, and distribute this software and its
@@ -24,6 +24,11 @@
 
 set -e
 
+# The URL to the Debian backports repository to add to the chroot
+# configuration when created via this script for a distribution ending in
+# -backports.
+BACKPORTS='http://backports.debian.org/debian-backports'
+
 # Set default BUILDER, DIST, and ARCH based on the name we were invoked as.
 # This allows people to create symlinks like git-pbuilder-squeeze and
 # git-qemubuilder-squeeze-amd64 pointing to git-pbuilder and auto-detecting
@@ -55,6 +60,14 @@ esac
 : ${DIST:=$default_DIST}
 : ${ARCH:=$default_ARCH}
 
+# If DIST ends in -backports, strip that out of DIST and add it to EXT.
+if expr "$DIST" : '.*-backports$' >/dev/null; then
+    DIST=${DIST%-backports}
+    EXT="-backports"
+else
+    EXT=
+fi
+
 # Make sure we have the necessary tools.
 if [ ! -x /usr/sbin/"$BUILDER" ]; then
     echo "$BUILDER not found; you need to install the $BUILDER package" >&2
@@ -79,7 +92,7 @@ if [ no != "$GIT_PBUILDER_AUTOCONF" ] ; then
             # ARCH is set, use base-$DIST-$ARCH.tgz.
             : ${DIST:=sid}
             if [ -n "$ARCH" ] ; then
-                BASE="$PBUILDER_BASE/base-$DIST-$ARCH.tgz"
+                BASE="$PBUILDER_BASE/base-$DIST$EXT-$ARCH.tgz"
                 OPTIONS="$OPTIONS --architecture $ARCH"
             elif [ "$DIST" = 'sid' ] ; then
                 if [ -f "$PBUILDER_BASE/base-sid.tgz" ] ; then
@@ -88,7 +101,7 @@ if [ no != "$GIT_PBUILDER_AUTOCONF" ] ; then
                     BASE="$PBUILDER_BASE/base.tgz"
                 fi
             else
-                BASE="$PBUILDER_BASE/base-$DIST.tgz"
+                BASE="$PBUILDER_BASE/base-$DIST$EXT.tgz"
             fi
             OPTIONS="$OPTIONS --basetgz $BASE"
 
@@ -116,7 +129,7 @@ if [ no != "$GIT_PBUILDER_AUTOCONF" ] ; then
             # ARCH is set, use base-$DIST-$ARCH.cow.
             : ${DIST:=sid}
             if [ -n "$ARCH" ] ; then
-                BASE="$COWBUILDER_BASE/base-$DIST-$ARCH.cow"
+                BASE="$COWBUILDER_BASE/base-$DIST$EXT-$ARCH.cow"
                 OPTIONS="$OPTIONS --architecture $ARCH"
             elif [ "$DIST" = 'sid' ] ; then
                 if [ -d "$COWBUILDER_BASE/base-sid.cow" ] ; then
@@ -125,7 +138,7 @@ if [ no != "$GIT_PBUILDER_AUTOCONF" ] ; then
                     BASE="$COWBUILDER_BASE/base.cow"
                 fi
             else
-                BASE="$COWBUILDER_BASE/base-$DIST.cow"
+                BASE="$COWBUILDER_BASE/base-$DIST$EXT.cow"
             fi
             OPTIONS="$OPTIONS --basepath $BASE"
     
@@ -152,12 +165,12 @@ if [ no != "$GIT_PBUILDER_AUTOCONF" ] ; then
     
             # There has to be a configuration file matching our distribution
             # and architecture.
-            QEMUBUILDER_CONFIG="/var/cache/pbuilder/$BUILDER-$ARCH-$DIST.conf"
-            if [ ! -r "$QEMUBUILDER_CONFIG" ]; then
-                echo "Cannot read configuration file $QEMUBUILDER_CONFIG" >&2
+            QEMUCONFIG="/var/cache/pbuilder/$BUILDER-$ARCH-$DIST$EXT.conf"
+            if [ ! -r "$CONFIG" ]; then
+                echo "Cannot read configuration file $QEMUCONFIG" >&2
                 exit 1
             fi
-            OPTIONS="$OPTIONS --config $QEMUBUILDER_CONFIG"
+            OPTIONS="$OPTIONS --config $QEMUCONFIG"
             ;;
     
         *)
@@ -173,10 +186,27 @@ case $1 in
 update|create|login)
     action="$1"
     shift
+
+    # Since we're running the builder under sudo, $HOME will change to root's
+    # home directory and the user's .pbuilderrc won't be run.  sudo -E would
+    # fix this, but that requires special configuration in sudoers to allow
+    # it.  Instead, check if the user has a .pbuilderrc and, if so, explicitly
+    # add it as a configuration file.
+    if [ -f "$HOME/.pbuilderrc" ] ; then
+        OPTIONS="$OPTIONS --configfile $HOME/.pbuilderrc"
+    fi
+
+    # Run the builder.
     if [ no = "$GIT_PBUILDER_AUTOCONF" ] ; then
         sudo "$BUILDER" --"$action" $OPTIONS "$@"
     else
-        sudo "$BUILDER" --"$action" --dist "$DIST" $OPTIONS "$@"
+        if [ "$EXT" = '-backports' ] ; then
+            OTHERMIRROR="deb $BACKPORTS $DIST$EXT main"
+            sudo "$BUILDER" --"$action" --dist "$DIST" \
+                --othermirror "$OTHERMIRROR" $OPTIONS "$@"
+        else
+            sudo "$BUILDER" --"$action" --dist "$DIST" $OPTIONS "$@"
+        fi
     fi
     exit $?
     ;;
@@ -188,12 +218,13 @@ update|create|login)
 esac
 
 # Print out some information about what we're doing.
+building="Building with $BUILDER"
 if [ no = "$GIT_PBUILDER_AUTOCONF" ] ; then
-    echo "Building with $BUILDER"
+    echo "$building"
 elif [ -n "$ARCH" ] ; then
-    echo "Building with $BUILDER for distribution $DIST, architecture $ARCH"
+    echo "$building for distribution $DIST$EXT, architecture $ARCH"
 else
-    echo "Building with $BUILDER for distribution $DIST"
+    echo "$building for distribution $DIST$EXT"
 fi
 
 # Source package format 1.0 doesn't automatically exclude Git files, so we
@@ -310,8 +341,17 @@ Alternately, B<git-pbuilder> may be called with an argument of C<update>,
 C<create>, or C<login>.  In this case, it calls B<cowbuilder> (or the
 configured builder as described above) using B<sudo> and passes the
 corresponding command to the builder, using the same logic as above to
-determine the base directory and distribution.  Any additional arguments
-to B<git-pbuilder> are passed along to the builder.
+determine the base directory and distribution.  If the distribution (set
+in DIST) ends in C<-backports>, the following will be added as an
+B<--othermirror> parameter to the builder:
+
+    deb http://backports.debian.org/debian-backports $DIST main
+
+Any additional arguments to B<git-pbuilder> are passed along to the
+builder.  Due to how B<sudo> works, invoking the builder with an action
+will not read the user's F<.pbuilderrc> by default, so in this case
+B<git-pbuilder> will add an explicit B<--configfile> option pointing to
+the user's F<.pbuilderrc> if it exists.
 
 =head1 ENVIRONMENT