wic: Add mic w/pykickstart

This is the starting point for the implemention described in [YOCTO
3847] which came to the conclusion that it would make sense to use
kickstart syntax to implement image creation in OpenEmbedded.  I
subsequently realized that there was an existing tool that already
implemented image creation using kickstart syntax, the Tizen/Meego mic
tool.  As such, it made sense to use that as a starting point - this
commit essentially just copies the relevant Python code from the MIC
tool to the scripts/lib dir, where it can be accessed by the
previously created wic tool.

Most of this will be removed or renamed by later commits, since we're
initially focusing on partitioning only.  Care should be taken so that
we can easily add back any additional functionality should we decide
later to expand the tool, though (we may also want to contribute our
local changes to the mic tool to the Tizen project if it makes sense,
and therefore should avoid gratuitous changes to the original code if
possible).

Added the /mic subdir from Tizen mic repo as a starting point:

 git clone git://review.tizen.org/tools/mic.git

 For reference, the top commit:

 commit 20164175ddc234a17b8a12c33d04b012347b1530
 Author: Gui Chen <gui.chen@intel.com>
 Date:   Sun Jun 30 22:32:16 2013 -0400

    bump up to 0.19.2

Also added the /plugins subdir, moved to under the /mic subdir (to
match the default plugin_dir location in mic.conf.in, which was
renamed to yocto-image.conf (moved and renamed by later patches) and
put into /scripts.

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 223 insertions, 0 deletions

diff --git a/scripts/lib/mic/rt_util.py b/scripts/lib/mic/rt_util.py
new file mode 100644
index 0000000000..2a31f4a218
--- /dev/null
+++ b/scripts/lib/mic/rt_util.py
@@ -0,0 +1,223 @@
+#!/usr/bin/python -tt
+#
+# Copyright (c) 2009, 2010, 2011 Intel, Inc.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the Free
+# Software Foundation; version 2 of the License
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc., 59
+# Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+from __future__ import with_statement
+import os
+import sys
+import glob
+import re
+import shutil
+import subprocess
+
+from mic import bootstrap, msger
+from mic.conf import configmgr
+from mic.utils import errors, proxy
+from mic.utils.fs_related import find_binary_path, makedirs
+from mic.chroot import setup_chrootenv, cleanup_chrootenv
+
+expath = lambda p: os.path.abspath(os.path.expanduser(p))
+
+def bootstrap_mic(argv=None):
+
+
+    def mychroot():
+        os.chroot(rootdir)
+        os.chdir(cwd)
+
+    # by default, sys.argv is used to run mic in bootstrap
+    if not argv:
+        argv = sys.argv
+    if argv[0] not in ('/usr/bin/mic', 'mic'):
+        argv[0] = '/usr/bin/mic'
+
+    cropts = configmgr.create
+    bsopts = configmgr.bootstrap
+    distro = bsopts['distro_name'].lower()
+
+    rootdir = bsopts['rootdir']
+    pkglist = bsopts['packages']
+    cwd = os.getcwd()
+
+    # create bootstrap and run mic in bootstrap
+    bsenv = bootstrap.Bootstrap(rootdir, distro, cropts['arch'])
+    bsenv.logfile = cropts['logfile']
+    # rootdir is regenerated as a temp dir
+    rootdir = bsenv.rootdir
+
+    if 'optional' in bsopts:
+        optlist = bsopts['optional']
+    else:
+        optlist = []
+
+    try:
+        msger.info("Creating %s bootstrap ..." % distro)
+        bsenv.create(cropts['repomd'], pkglist, optlist)
+
+        # bootstrap is relocated under "bootstrap"
+        if os.path.exists(os.path.join(rootdir, "bootstrap")):
+            rootdir = os.path.join(rootdir, "bootstrap")
+
+        bsenv.dirsetup(rootdir)
+        sync_mic(rootdir)
+
+        #FIXME: sync the ks file to bootstrap
+        if "/" == os.path.dirname(os.path.abspath(configmgr._ksconf)):
+            safecopy(configmgr._ksconf, rootdir)
+
+        msger.info("Start mic in bootstrap: %s\n" % rootdir)
+        bindmounts = get_bindmounts(cropts)
+        ret = bsenv.run(argv, cwd, rootdir, bindmounts)
+
+    except errors.BootstrapError, err:
+        msger.warning('\n%s' % err)
+        if msger.ask("Switch to native mode and continue?"):
+            return
+        raise
+    except RuntimeError, err:
+        #change exception type but keep the trace back
+        value, tb = sys.exc_info()[1:]
+        raise errors.BootstrapError, value, tb
+    else:
+        sys.exit(ret)
+    finally:
+        bsenv.cleanup()
+
+def get_bindmounts(cropts):
+    binddirs =  [
+                  os.getcwd(),
+                  cropts['tmpdir'],
+                  cropts['cachedir'],
+                  cropts['outdir'],
+                  cropts['local_pkgs_path'],
+                ]
+    bindfiles = [
+                  cropts['logfile'],
+                  configmgr._ksconf,
+                ]
+
+    for lrepo in cropts['localrepos']:
+        binddirs.append(lrepo)
+
+    bindlist = map(expath, filter(None, binddirs))
+    bindlist += map(os.path.dirname, map(expath, filter(None, bindfiles)))
+    bindlist = sorted(set(bindlist))
+    bindmounts = ';'.join(bindlist)
+    return bindmounts
+
+
+def get_mic_binpath():
+    fp = None
+    try:
+        import pkg_resources # depends on 'setuptools'
+    except ImportError:
+        pass
+    else:
+        dist = pkg_resources.get_distribution('mic')
+        # the real script is under EGG_INFO/scripts
+        if dist.has_metadata('scripts/mic'):
+            fp = os.path.join(dist.egg_info, "scripts/mic")
+
+    if fp:
+        return fp
+
+    # not found script if 'flat' egg installed
+    try:
+        return find_binary_path('mic')
+    except errors.CreatorError:
+        raise errors.BootstrapError("Can't find mic binary in host OS")
+
+
+def get_mic_modpath():
+    try:
+        import mic
+    except ImportError:
+        raise errors.BootstrapError("Can't find mic module in host OS")
+    path = os.path.abspath(mic.__file__)
+    return os.path.dirname(path)
+
+def get_mic_libpath():
+    # TBD: so far mic lib path is hard coded
+    return "/usr/lib/mic"
+
+# the hard code path is prepared for bootstrap
+def sync_mic(bootstrap, binpth = '/usr/bin/mic',
+             libpth='/usr/lib',
+             pylib = '/usr/lib/python2.7/site-packages',
+             conf = '/etc/mic/mic.conf'):
+    _path = lambda p: os.path.join(bootstrap, p.lstrip('/'))
+
+    micpaths = {
+                 'binpth': get_mic_binpath(),
+                 'libpth': get_mic_libpath(),
+                 'pylib': get_mic_modpath(),
+                 'conf': '/etc/mic/mic.conf',
+               }
+
+    if not os.path.exists(_path(pylib)):
+        pyptn = '/usr/lib/python?.?/site-packages'
+        pylibs = glob.glob(_path(pyptn))
+        if pylibs:
+            pylib = pylibs[0].replace(bootstrap, '')
+        else:
+            raise errors.BootstrapError("Can't find python site dir in: %s" %
+                                        bootstrap)
+
+    for key, value in micpaths.items():
+        try:
+            safecopy(value, _path(eval(key)), False, ["*.pyc", "*.pyo"])
+        except (OSError, IOError), err:
+            raise errors.BootstrapError(err)
+
+    # auto select backend
+    conf_str = file(_path(conf)).read()
+    conf_str = re.sub("pkgmgr\s*=\s*.*", "pkgmgr=auto", conf_str)
+    with open(_path(conf), 'w') as wf:
+        wf.write(conf_str)
+
+    # chmod +x /usr/bin/mic
+    os.chmod(_path(binpth), 0777)
+
+    # correct python interpreter
+    mic_cont = file(_path(binpth)).read()
+    mic_cont = "#!/usr/bin/python\n" + mic_cont
+    with open(_path(binpth), 'w') as wf:
+        wf.write(mic_cont)
+
+
+def safecopy(src, dst, symlinks=False, ignore_ptns=()):
+    if os.path.isdir(src):
+        if os.path.isdir(dst):
+            dst = os.path.join(dst, os.path.basename(src))
+        if os.path.exists(dst):
+            shutil.rmtree(dst, ignore_errors=True)
+
+        src = src.rstrip('/')
+        # check common prefix to ignore copying itself
+        if dst.startswith(src + '/'):
+            ignore_ptns = list(ignore_ptns) + [ os.path.basename(src) ]
+
+        ignores = shutil.ignore_patterns(*ignore_ptns)
+        try:
+            shutil.copytree(src, dst, symlinks, ignores)
+        except (OSError, IOError):
+            shutil.rmtree(dst, ignore_errors=True)
+            raise
+    else:
+        if not os.path.isdir(dst):
+            makedirs(os.path.dirname(dst))
+
+        shutil.copy2(src, dst)