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Merge remote-tracking branch 'remotes/famz/tags/docker-pull-request' into staging

# gpg: Signature made Fri 09 Sep 2016 05:54:35 BST
# gpg:                using RSA key 0xCA35624C6A9171C6
# gpg: Good signature from "Fam Zheng <famz@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 5003 7CB7 9706 0F76 F021  AD56 CA35 624C 6A91 71C6

* remotes/famz/tags/docker-pull-request:
  docker: silence debootstrap when --quiet is given
  docker: build debootstrap after cloning
  docker: make sure debootstrap is at least 1.0.67
  docker: print warning if EXECUTABLE is not set when building debootstrap image
  docker: debian-bootstrap.pre: print helpful message if DEB_ARCH/DEB_TYPE unset
  docker: debian-bootstrap.pre: print error messages to stderr
  docker: avoid dependency on 'realpath' package
  docker.py: don't hang on large docker output
  docker: Add a glib2-2.22 image

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

tests/docker/Makefile.include

@@ -44,6 +44,9 @@ docker-image: ${DOCKER_TARGETS}
 
 # General rule for building docker images
 docker-image-%: $(DOCKER_FILES_DIR)/%.docker
+	@if test "$@" = docker-image-debian-bootstrap -a -z "$(EXECUTABLE)"; then \
+		echo WARNING: EXECUTABLE is not set, debootstrap may fail. 2>&1 ; \
+	fi
 	$(call quiet-command,\
 		$(SRC_PATH)/tests/docker/docker.py build qemu:$* $< \
 		$(if $V,,--quiet) $(if $(NOCACHE),--no-cache) \
@@ -116,7 +119,7 @@ docker-run-%: docker-qemu-src
 				-e EXTRA_CONFIGURE_OPTS=$(EXTRA_CONFIGURE_OPTS) \
 				-e V=$V -e J=$J -e DEBUG=$(DEBUG)\
 				-e CCACHE_DIR=/var/tmp/ccache \
-				-v $$(realpath $(DOCKER_SRC_COPY)):/var/tmp/qemu:z$(COMMA)ro \
+				-v $$(readlink -e $(DOCKER_SRC_COPY)):/var/tmp/qemu:z$(COMMA)ro \
 				-v $(DOCKER_CCACHE_DIR):/var/tmp/ccache:z \
 				qemu:$(IMAGE) \
 				/var/tmp/qemu/run \

tests/docker/docker.py

@@ -25,6 +25,10 @@
 from StringIO import StringIO
 from shutil import copy, rmtree
 
+
+DEVNULL = open(os.devnull, 'wb')
+
+
 def _text_checksum(text):
     """Calculate a digest string unique to the text content"""
     return hashlib.sha1(text).hexdigest()
@@ -34,8 +38,7 @@ def _guess_docker_command():
     commands = [["docker"], ["sudo", "-n", "docker"]]
     for cmd in commands:
         if subprocess.call(cmd + ["images"],
-                           stdout=subprocess.PIPE,
+                           stdout=DEVNULL, stderr=DEVNULL) == 0:
-                           stderr=subprocess.PIPE) == 0:
             return cmd
     commands_txt = "\n".join(["  " + " ".join(x) for x in commands])
     raise Exception("Cannot find working docker command. Tried:\n%s" % \
@@ -98,7 +101,7 @@ def __init__(self):
 
     def _do(self, cmd, quiet=True, infile=None, **kwargs):
         if quiet:
-            kwargs["stdout"] = subprocess.PIPE
+            kwargs["stdout"] = DEVNULL
         if infile:
             kwargs["stdin"] = infile
         return subprocess.call(self._command + cmd, **kwargs)
@@ -236,8 +239,9 @@ def run(self, args, argv):
             # Is there a .pre file to run in the build context?
             docker_pre = os.path.splitext(args.dockerfile)[0]+".pre"
             if os.path.exists(docker_pre):
+                stdout = DEVNULL if args.quiet else None
                 rc = subprocess.call(os.path.realpath(docker_pre),
-                                     cwd=docker_dir)
+                                     cwd=docker_dir, stdout=stdout)
                 if rc == 3:
                     print "Skip"
                     return 0

tests/docker/dockerfiles/debian-bootstrap.pre

@@ -3,6 +3,8 @@
 # Simple wrapper for debootstrap, run in the docker build context
 #
 FAKEROOT=`which fakeroot 2> /dev/null`
+# debootstrap < 1.0.67 generates empty sources.list, see Debian#732255
+MIN_DEBOOTSTRAP_VERSION=1.0.67
 
 exit_and_skip()
 {
@@ -13,8 +15,21 @@ exit_and_skip()
 # fakeroot is needed to run the bootstrap stage
 #
 if [ -z $FAKEROOT ]; then
-    echo "Please install fakeroot to enable bootstraping"
+    echo "Please install fakeroot to enable bootstraping" >&2
     exit_and_skip
+
+fi
+
+if [ -z "${DEB_ARCH}" ]; then
+    echo "Please set DEB_ARCH to choose an architecture (e.g. armhf)" >&2
+    exit_and_skip
+
+fi
+
+if [ -z "${DEB_TYPE}" ]; then
+    echo "Please set DEB_TYPE to a Debian archive name (e.g. testing)" >&2
+    exit_and_skip
+
 fi
 
 # We check in order for
@@ -27,18 +42,27 @@ fi
 #
 
 if [ -z $DEBOOTSTRAP_DIR ]; then
+    NEED_DEBOOTSTRAP=false
     DEBOOTSTRAP=`which debootstrap 2> /dev/null`
     if [ -z $DEBOOTSTRAP ]; then
         echo "No debootstrap installed, attempting to install from SCM"
+        NEED_DEBOOTSTRAP=true
+    elif ! (echo "${MIN_DEBOOTSTRAP_VERSION}" ; "${DEBOOTSTRAP}" --version \
+            | cut -d ' ' -f 2) | sort -t . -n -k 1,1 -k 2,2 -k 3,3 -c &>/dev/null; then
+        echo "debootstrap too old, attempting to install from SCM"
+        NEED_DEBOOTSTRAP=true
+    fi
+    if $NEED_DEBOOTSTRAP; then
         DEBOOTSTRAP_SOURCE=https://anonscm.debian.org/git/d-i/debootstrap.git
         git clone ${DEBOOTSTRAP_SOURCE} ./debootstrap.git
         export DEBOOTSTRAP_DIR=./debootstrap.git
         DEBOOTSTRAP=./debootstrap.git/debootstrap
+        (cd "${DEBOOTSTRAP_DIR}" && "${FAKEROOT}" make )
     fi
 else
     DEBOOTSTRAP=${DEBOOTSTRAP_DIR}/debootstrap
     if [ ! -f $DEBOOTSTRAP ]; then
-        echo "Couldn't find script at ${DEBOOTSTRAP}"
+        echo "Couldn't find script at ${DEBOOTSTRAP}" >&2
         exit_and_skip
     fi
 fi
@@ -48,7 +72,7 @@ fi
 #
 BINFMT_DIR=/proc/sys/fs/binfmt_misc
 if [ ! -e $BINFMT_DIR ]; then
-   echo "binfmt_misc needs enabling for a QEMU bootstrap to work"
+   echo "binfmt_misc needs enabling for a QEMU bootstrap to work" >&2
    exit_and_skip
 else
     # DEB_ARCH and QEMU arch names are not totally aligned
@@ -76,7 +100,7 @@ else
         ;;
     esac
     if [ ! -e "${BINFMT_DIR}/$QEMU" ]; then
-        echo "No binfmt_misc rule to run $QEMU, can't bootstrap"
+        echo "No binfmt_misc rule to run $QEMU, can't bootstrap" >&2
         exit_and_skip
     fi
 fi

tests/docker/dockerfiles/min-glib.docker

@@ -0,0 +1,8 @@
+FROM centos:6
+RUN yum install -y \
+    tar git make gcc g++ \
+    zlib-devel SDL-devel pixman-devel \
+    epel-release
+RUN yum install -y libfdt-devel ccache
+RUN yum downgrade -y http://vault.centos.org/6.0/os/x86_64/Packages/glib2-2.22.5-5.el6.x86_64.rpm
+RUN yum install -y http://vault.centos.org/6.0/os/x86_64/Packages/glib2-devel-2.22.5-5.el6.x86_64.rpm