/usr/bin/mic-chroot is in mic2 0.24.12-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 | #!/usr/bin/python -t
#
# mic-chroot : chroot into an image or file system in order to change it
#
# Copyright 2009, 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 Library 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.
import os
import os.path
import sys
import optparse
import shutil
import subprocess
import signal
import mic.imgcreate as imgcreate
import mic.imgconvert as imgconvert
import mic.chroot as chroot
import mic.utils as utils
def sig_interrupt(signum=None, frame=None):
raise imgcreate.CreatorError('Canceled by ^C.')
signal.signal(signal.SIGINT, sig_interrupt)
try:
import mic.__version__
version = mic.__version__.version
except:
version = 'unknown'
class Usage(Exception):
def __init__(self, msg = None, no_error = False):
Exception.__init__(self, msg, no_error)
def parse_options(args):
parser = optparse.OptionParser(
usage="mic-chroot [options] <image | filesystem>\n\n"
"<image> is a live image file name, <filesystem>"
" is a directory path which\n contains the whole file system"
" unpacked from a live image."
, version = version)
parser.add_option("-s", "--save-to", type="string", dest="saveto",
help="Save unpacked filesystem to the specified path ")
parser.add_option("", "--unpack-only", action="store_true",
dest="unpackonly", default=False,
help="Just unpack an image, this is used to"
"unpack an image with -s option together"
)
parser.add_option("-b", "--bind-mounts", type="string", dest="bindmounts",
help="Specify bind mount list, for example: -b "
"\"/proc:/proc;/:/parentroot\""
)
parser.add_option("-c", "--convert-to", type="string", dest="convertto",
help="Convert it to the specified type live image on"
" exiting, the allowed value is livecd or liveusb"
)
parser.add_option("-e", "--execute", type="string", dest="execute",
help="Execute the given command within the chroot"
" instead of an interactive shell"
)
parser.add_option("", "--convert-only", action="store_true",
dest="convertonly", default=False,
help="Just convert an image, this will skip chroot and"
" directly convert an image/filesytem with -c "
"option together"
)
parser.add_option("-o", "--outdir", type="string",
dest="outdir", default=None,
help="Output directory to use "
"(default: current work dir)"
)
utils.setup_logging(parser)
(options, args) = parser.parse_args()
if len(args) != 1:
parser.print_help()
sys.exit(-1)
target = args[0]
if os.path.isfile(target):
type = imgcreate.get_image_type(target)
if type not in ("livecd", "liveusb", "ext3fsimg", "raw"):
chroot.perror("I can't recognize this image type.")
return None
options.targettype = "img"
elif os.path.isdir(target):
options.targettype = "dir"
else:
chroot.perror("%s doesn't exist." % target)
return None
options.targetpath = target
if options.convertto:
if options.convertto not in ("livecd", "liveusb", "ext3fsimg"):
chroot.perror("I can't convert it to %s" % options.convertto)
return None
if not options.unpackonly and options.bindmounts:
if chroot.check_bind_mounts(None, options.bindmounts) == False:
chroot.perror("bindmounts %s is invalid." % options.bindmounts)
return None
return options
def print_danger_warning():
print "+====================================================================================+"
print "| WARNING: this script is very dangerous, it may damage your system data, |"
print "| so please use it carefully and read this warning seriously. |"
print "| |"
print "| mic-chroot will create some temporary directories under /var/tmp, their names |"
print "| look like 'mic-tmp-*', mic-chroot also creates a directory to save image |"
print "| file system for chroot. For such directories, please use mic-rm-chroot-dir to |"
print "| remove, otherwise, you may remove your whole system by 'rm -rf <yourdir>' if you |"
print "| terminate mic-chroot because of some exceptions or unknown errors, the root |"
print "| cause is mic-chroot will bind mount / to chroot directory, exceptional |"
print "| terminations didn't unmount it, so you may damage your system, we have warned you. |"
print "| Please use it very very carefully, and don't use 'rm -rf' for such directories, |"
print "| instead, use 'mic-rm-chroot-dir' |"
print "+====================================================================================+"
print "\n"
def cleanup_after_chroot(targettype,imgmount,tmpdir,tmpmnt):
if imgmount and targettype == "img":
imgmount.cleanup()
if tmpdir:
shutil.rmtree(tmpdir, ignore_errors = True)
if tmpmnt:
shutil.rmtree(tmpmnt, ignore_errors = True)
def main():
utils.misc.setlocale()
try:
options = parse_options(sys.argv[1:])
if not options:
return 2
except Usage, (msg, no_error):
if no_error:
out = sys.stdout
ret = 0
else:
out = sys.stderr
ret = 2
if msg:
print >> out, msg
return ret
if os.geteuid () != 0:
chroot.perror("You must run mic-chroot as root")
return 1
if options.convertonly and not options.convertto:
chroot.perror("If --convert-only is given, you must use -c | --convert-to to specify target image format.")
return 1
print_danger_warning()
imgmount = None
tmpdir = None
tmpmnt = None
if options.outdir:
if not os.path.isdir(options.outdir):
chroot.perror("outdir %s doesn't exist." % options.outdir)
return 1
else:
options.outdir = "."
if options.saveto:
if os.path.exists(options.saveto):
chroot.perror("saveto path %s has existed." % options.saveto)
return 1
else:
imgcreate.makedirs(options.saveto)
savefs = True
else:
if options.unpackonly:
chroot.perror("When using --unpack-only you need to give also dir to which the image is unpacked with -s or --save-to.")
return 1
if os.path.isdir(options.targetpath):
options.saveto = options.targetpath
else:
options.saveto = imgcreate.mkdtemp()
tmpdir = options.saveto
chroot.pinfo("%s will be unpacked into %s" % (options.targetpath, options.saveto))
savefs = False
options.saveto = os.path.abspath(os.path.expanduser(options.saveto))
if options.targettype == "img":
imgmount = chroot.ImageMount(options.targetpath)
try:
if savefs:
tmpmnt = imgcreate.mkdtemp()
imgmount.mount(tmpmnt)
print("Copying filesystem to %s..." % options.saveto)
imgcreate.myxcopytree(tmpmnt, options.saveto)
else:
imgmount.mount(options.saveto)
except imgcreate.CreatorError, e:
cleanup_after_chroot(options.targettype,imgmount,tmpdir,tmpmnt)
chroot.perror("ImageMount: %s" % e)
return 1
if options.unpackonly:
imgmount.cleanup()
if tmpmnt:
shutil.rmtree(tmpmnt, ignore_errors = True)
return 0
if options.bindmounts:
if chroot.check_bind_mounts(options.saveto,
options.bindmounts) == False:
cleanup_after_chroot(options.targettype,imgmount,tmpdir,tmpmnt)
chroot.perror("bindmounts %s is invalid." % options.bindmounts)
return 1
if not options.convertonly:
if not options.execute:
# If executable was not given we use following defaults
options.execute = "/bin/env HOME=/root /bin/bash"
try:
chroot.chroot(options.saveto, bindmounts = options.bindmounts, execute = options.execute)
except:
cleanup_after_chroot(options.targettype,imgmount,tmpdir,tmpmnt)
chroot.perror("Failed to chroot to %s." % options.saveto)
return 1
if options.convertto:
chroot.cleanup_mounts(options.saveto)
if options.targettype == "img":
args = ["mic-image-convertor", "--source-image=%s" % imgmount.os_image,
"--target-format=%s" % options.convertto, "--outdir=%s" % options.outdir]
else:
args = ["mic-image-convertor", "--source-image=%s" % options.saveto,
"--target-format=%s" % options.convertto, "--outdir=%s" % options.outdir]
subprocess.call(args)
cleanup_after_chroot(options.targettype,imgmount,tmpdir,tmpmnt)
print "Finished."
return 0
COLOR_BLACK = "\033[00m"
COLOR_RED = "\033[1;31m"
if __name__ == "__main__":
try:
sys.exit(main())
except (imgcreate.CreatorError), e:
print >> sys.stderr, "\n%sError: %s%s\n" % (COLOR_RED, e, COLOR_BLACK)
utils.terminate_log_thread()
sys.exit(1)
|