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#!/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 tempfile
import shutil
import subprocess
import rpm
from mic import msger
from mic.utils import errors, proxy, misc
from mic.utils.rpmmisc import readRpmHeader, RPMInstallCallback
from mic.chroot import cleanup_mounts, setup_chrootenv, cleanup_chrootenv
PATH_BOOTSTRAP = "/usr/sbin:/usr/bin:/sbin:/bin"
RPMTRANS_FLAGS = [
rpm.RPMTRANS_FLAG_ALLFILES,
rpm.RPMTRANS_FLAG_NOSCRIPTS,
rpm.RPMTRANS_FLAG_NOTRIGGERS,
]
RPMVSF_FLAGS = [
rpm._RPMVSF_NOSIGNATURES,
rpm._RPMVSF_NODIGESTS
]
RPMPROB_FLAGS = [
rpm.RPMPROB_FILTER_OLDPACKAGE,
rpm.RPMPROB_FILTER_REPLACEPKG,
rpm.RPMPROB_FILTER_IGNOREARCH
]
class MiniBackend(object):
def __init__(self, rootdir, arch=None, repomd=None):
self._ts = None
self.rootdir = os.path.abspath(rootdir)
self.arch = arch
self.repomd = repomd
self.dlpkgs = []
self.localpkgs = {}
self.optionals = []
self.preins = {}
self.postins = {}
self.scriptlets = False
def __del__(self):
try:
del self.ts
except:
pass
def get_ts(self):
if not self._ts:
self._ts = rpm.TransactionSet(self.rootdir)
self._ts.setFlags(reduce(lambda x, y: x|y, RPMTRANS_FLAGS))
self._ts.setVSFlags(reduce(lambda x, y: x|y, RPMVSF_FLAGS))
self._ts.setProbFilter(reduce(lambda x, y: x|y, RPMPROB_FLAGS))
return self._ts
def del_ts(self):
if self._ts:
self._ts.closeDB()
self._ts = None
ts = property(fget = lambda self: self.get_ts(),
fdel = lambda self: self.del_ts(),
doc="TransactionSet object")
def selectPackage(self, pkg):
if not pkg in self.dlpkgs:
self.dlpkgs.append(pkg)
def runInstall(self):
# FIXME: check space
self.downloadPkgs()
self.installPkgs()
if not self.scriptlets:
return
for pkg in self.preins.keys():
prog, script = self.preins[pkg]
self.run_pkg_script(pkg, prog, script, '0')
for pkg in self.postins.keys():
prog, script = self.postins[pkg]
self.run_pkg_script(pkg, prog, script, '1')
def downloadPkgs(self):
nonexist = []
for pkg in self.dlpkgs:
localpth = misc.get_package(pkg, self.repomd, self.arch)
if localpth:
self.localpkgs[pkg] = localpth
elif pkg in self.optionals:
# skip optional rpm
continue
else:
# mark nonexist rpm
nonexist.append(pkg)
if nonexist:
raise errors.BootstrapError("Can't get rpm binary: %s" %
','.join(nonexist))
def installPkgs(self):
for pkg in self.localpkgs.keys():
rpmpath = self.localpkgs[pkg]
hdr = readRpmHeader(self.ts, rpmpath)
# save prein and postin scripts
self.preins[pkg] = (hdr['PREINPROG'], hdr['PREIN'])
self.postins[pkg] = (hdr['POSTINPROG'], hdr['POSTIN'])
# mark pkg as install
self.ts.addInstall(hdr, rpmpath, 'u')
# run transaction
self.ts.order()
cb = RPMInstallCallback(self.ts)
self.ts.run(cb.callback, '')
def run_pkg_script(self, pkg, prog, script, arg):
mychroot = lambda: os.chroot(self.rootdir)
if not script:
return
if prog == "<lua>":
prog = "/usr/bin/lua"
tmpdir = os.path.join(self.rootdir, "tmp")
if not os.path.exists(tmpdir):
os.makedirs(tmpdir)
tmpfd, tmpfp = tempfile.mkstemp(dir=tmpdir, prefix="%s.pre-" % pkg)
script = script.replace('\r', '')
os.write(tmpfd, script)
os.close(tmpfd)
os.chmod(tmpfp, 0700)
try:
script_fp = os.path.join('/tmp', os.path.basename(tmpfp))
subprocess.call([prog, script_fp, arg], preexec_fn=mychroot)
except (OSError, IOError), err:
msger.warning(str(err))
finally:
os.unlink(tmpfp)
class Bootstrap(object):
def __init__(self, rootdir, distro, arch=None):
self.rootdir = misc.mkdtemp(dir=rootdir, prefix=distro)
self.distro = distro
self.arch = arch
self.logfile = None
self.pkgslist = []
self.repomd = None
def __del__(self):
self.cleanup()
def get_rootdir(self):
if os.path.exists(self.rootdir):
shutil.rmtree(self.rootdir, ignore_errors=True)
os.makedirs(self.rootdir)
return self.rootdir
def dirsetup(self, rootdir=None):
_path = lambda pth: os.path.join(rootdir, pth.lstrip('/'))
if not rootdir:
rootdir = self.rootdir
try:
# make /tmp and /etc path
tmpdir = _path('/tmp')
if not os.path.exists(tmpdir):
os.makedirs(tmpdir)
etcdir = _path('/etc')
if not os.path.exists(etcdir):
os.makedirs(etcdir)
# touch distro file
tzdist = _path('/etc/%s-release' % self.distro)
if not os.path.exists(tzdist):
with open(tzdist, 'w') as wf:
wf.write("bootstrap")
except:
pass
def create(self, repomd, pkglist, optlist=()):
try:
pkgmgr = MiniBackend(self.get_rootdir())
pkgmgr.arch = self.arch
pkgmgr.repomd = repomd
pkgmgr.optionals = list(optlist)
map(pkgmgr.selectPackage, pkglist + list(optlist))
pkgmgr.runInstall()
except (OSError, IOError, errors.CreatorError), err:
raise errors.BootstrapError("%s" % err)
def run(self, cmd, chdir, rootdir=None, bindmounts=None):
def mychroot():
os.chroot(rootdir)
os.chdir(chdir)
def sync_timesetting(rootdir):
try:
# sync time and zone info to bootstrap
if os.path.exists(rootdir + "/etc/localtime"):
os.unlink(rootdir + "/etc/localtime")
shutil.copyfile("/etc/localtime", rootdir + "/etc/localtime")
except:
pass
def sync_passwdfile(rootdir):
try:
# sync passwd file to bootstrap, saving the user info
if os.path.exists(rootdir + "/etc/passwd"):
os.unlink(rootdir + "/etc/passwd")
shutil.copyfile("/etc/passwd", rootdir + "/etc/passwd")
except:
pass
if not rootdir:
rootdir = self.rootdir
if isinstance(cmd, list):
shell = False
else:
shell = True
env = os.environ
env['PATH'] = "%s:%s" % (PATH_BOOTSTRAP, env['PATH'])
retcode = 0
gloablmounts = None
try:
proxy.set_proxy_environ()
gloablmounts = setup_chrootenv(rootdir, bindmounts, False)
sync_timesetting(rootdir)
sync_passwdfile(rootdir)
retcode = subprocess.call(cmd, preexec_fn=mychroot, env=env, shell=shell)
except (OSError, IOError):
# add additional information to original exception
value, tb = sys.exc_info()[1:]
value = '%s: %s' % (value, ' '.join(cmd))
raise RuntimeError, value, tb
finally:
if self.logfile and os.path.isfile(self.logfile):
msger.log(file(self.logfile).read())
cleanup_chrootenv(rootdir, bindmounts, gloablmounts)
proxy.unset_proxy_environ()
return retcode
def cleanup(self):
try:
# clean mounts
cleanup_mounts(self.rootdir)
# remove rootdir
shutil.rmtree(self.rootdir, ignore_errors=True)
except:
pass
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