def chroot(chrootdir, bindmounts = None, execute = "/bin/bash"):
""" chroot the chrootdir and execute the command """
def mychroot():
""" pre-execute function """
os.chroot(chrootdir)
os.chdir("/")
arch = ELF_arch(chrootdir)
if arch == "arm":
qemu_emulator = misc.setup_qemu_emulator(chrootdir, "arm")
elif arch == "mipsel":
qemu_emulator = misc.setup_qemu_emulator(chrootdir, "mipsel")
else:
qemu_emulator = None
savefs_before_chroot(chrootdir, None)
globalmounts = None
try:
msger.info("Launching shell. Exit to continue.\n"
"----------------------------------")
globalmounts = setup_chrootenv(chrootdir, bindmounts)
subprocess.call(execute, preexec_fn = mychroot, shell=True)
except OSError, err:
raise errors.CreatorError("chroot err: %s" % str(err))
def chroot(chrootdir, bindmounts=None, execute="/bin/bash"):
""" chroot the chrootdir and execute the command """
def mychroot():
""" pre-execute function """
os.chroot(chrootdir)
os.chdir("/")
arch = ELF_arch(chrootdir)
if arch == "arm":
qemu_emulators = misc.setup_qemu_emulator(chrootdir, "arm")
elif arch == "mipsel":
qemu_emulators = misc.setup_qemu_emulator(chrootdir, "mipsel")
else:
qemu_emulators = []
savefs_before_chroot(chrootdir, None)
globalmounts = None
try:
msger.info("Launching shell. Exit to continue.\n"
"----------------------------------")
globalmounts = setup_chrootenv(chrootdir, bindmounts)
subprocess.call(execute, preexec_fn=mychroot, shell=True)
except OSError, err:
raise errors.CreatorError("chroot err: %s" % str(err))
def mount(self, base_on = None, cachedir = None):
"""Setup the target filesystem in preparation for an install.
This function sets up the filesystem which the ImageCreator will
install into and configure. The ImageCreator class merely creates an
install root directory, bind mounts some system directories (e.g. /dev)
and writes out /etc/fstab. Other subclasses may also e.g. create a
sparse file, format it and loopback mount it to the install root.
base_on -- a previous install on which to base this install; defaults
to None, causing a new image to be created
cachedir -- a directory in which to store the Yum cache; defaults to
None, causing a new cache to be created; by setting this
to another directory, the same cache can be reused across
multiple installs.
"""
self.__ensure_builddir()
fs.makedirs(self._instroot)
fs.makedirs(self._outdir)
self._mount_instroot(base_on)
for d in ("/dev/pts",
"/etc",
"/boot",
"/var/log",
"/sys",
"/proc",
"/usr/bin"):
fs.makedirs(self._instroot + d)
if self.target_arch and self.target_arch.startswith("arm"):
self.qemu_emulator = misc.setup_qemu_emulator(self._instroot,
self.target_arch)
self.get_cachedir(cachedir)
# bind mount system directories into _instroot
for (f, dest) in [("/sys", None),
("/proc", None),
("/proc/sys/fs/binfmt_misc", None),
("/dev/pts", None)]:
self.__bindmounts.append(fs.BindChrootMount(f, self._instroot, dest))
self._do_bindmounts()
self.__create_minimal_dev()
if os.path.exists(self._instroot + "/etc/mtab"):
os.unlink(self._instroot + "/etc/mtab")
os.symlink("../proc/mounts", self._instroot + "/etc/mtab")
self.__write_fstab()
# get size of available space in 'instroot' fs
self._root_fs_avail = misc.get_filesystem_avail(self._instroot)
def mount(self, base_on=None, cachedir=None):
"""Setup the target filesystem in preparation for an install.
This function sets up the filesystem which the ImageCreator will
install into and configure. The ImageCreator class merely creates an
install root directory, bind mounts some system directories (e.g. /dev)
and writes out /etc/fstab. Other subclasses may also e.g. create a
sparse file, format it and loopback mount it to the install root.
base_on -- a previous install on which to base this install; defaults
to None, causing a new image to be created
cachedir -- a directory in which to store the Yum cache; defaults to
None, causing a new cache to be created; by setting this
to another directory, the same cache can be reused across
multiple installs.
"""
self.__setup_tmpdir()
self.__ensure_builddir()
# prevent popup dialog in Ubuntu(s)
misc.hide_loopdev_presentation()
fs.makedirs(self._instroot)
fs.makedirs(self._outdir)
self._mount_instroot(base_on)
for d in ("/dev/pts", "/etc", "/boot", "/var/log", "/sys", "/proc",
"/usr/bin"):
fs.makedirs(self._instroot + d)
if self.target_arch and self.target_arch.startswith("arm"):
self.qemu_emulator = misc.setup_qemu_emulator(
self._instroot, self.target_arch)
self.get_cachedir(cachedir)
# bind mount system directories into _instroot
for (f, dest) in [("/sys", None), ("/proc", None),
("/proc/sys/fs/binfmt_misc", None),
("/dev/pts", None)]:
self.__bindmounts.append(
fs.BindChrootMount(f, self._instroot, dest))
self._do_bindmounts()
self.__create_minimal_dev()
if os.path.exists(self._instroot + "/etc/mtab"):
os.unlink(self._instroot + "/etc/mtab")
os.symlink("../proc/mounts", self._instroot + "/etc/mtab")
self.__write_fstab()
# get size of available space in 'instroot' fs
self._root_fs_avail = misc.get_filesystem_avail(self._instroot)
def chroot(chrootdir, bindmounts = None, execute = "/bin/bash"):
def mychroot():
os.chroot(chrootdir)
os.chdir("/")
dev_null = os.open("/dev/null", os.O_WRONLY)
files_to_check = ["/bin/bash", "/sbin/init"]
architecture_found = False
""" Register statically-linked qemu-arm if it is an ARM fs """
qemu_emulator = None
for ftc in files_to_check:
ftc = "%s/%s" % (chrootdir,ftc)
# Return code of 'file' is "almost always" 0 based on some man pages
# so we need to check the file existance first.
if not os.path.exists(ftc):
continue
for line in runner.outs(['file', ftc]).splitlines():
if 'ARM' in line:
qemu_emulator = misc.setup_qemu_emulator(chrootdir, "arm")
architecture_found = True
break
if 'Intel' in line:
architecture_found = True
break
if architecture_found:
break
os.close(dev_null)
if not architecture_found:
raise errors.CreatorError("Failed to get architecture from any of the "
"following files %s from chroot." \
% files_to_check)
try:
msger.info("Launching shell. Exit to continue.\n"
"----------------------------------")
globalmounts = setup_chrootenv(chrootdir, bindmounts)
subprocess.call(execute, preexec_fn = mychroot, shell=True)
except OSError, err:
raise errors.CreatorError("chroot err: %s" % str(err))
def chroot(chrootdir, bindmounts=None, execute="/bin/bash"):
def mychroot():
os.chroot(chrootdir)
os.chdir("/")
dev_null = os.open("/dev/null", os.O_WRONLY)
files_to_check = ["/bin/bash", "/sbin/init"]
architecture_found = False
""" Register statically-linked qemu-arm if it is an ARM fs """
qemu_emulator = None
for ftc in files_to_check:
ftc = "%s/%s" % (chrootdir, ftc)
# Return code of 'file' is "almost always" 0 based on some man pages
# so we need to check the file existance first.
if not os.path.exists(ftc):
continue
for line in runner.outs(['file', ftc]).splitlines():
if 'ARM' in line:
qemu_emulator = misc.setup_qemu_emulator(chrootdir, "arm")
architecture_found = True
break
if 'Intel' in line:
architecture_found = True
break
if architecture_found:
break
os.close(dev_null)
if not architecture_found:
raise errors.CreatorError("Failed to get architecture from any of the "
"following files %s from chroot." \
% files_to_check)
try:
msger.info("Launching shell. Exit to continue.\n"
"----------------------------------")
globalmounts = setup_chrootenv(chrootdir, bindmounts)
subprocess.call(execute, preexec_fn=mychroot, shell=True)
except OSError, err:
raise errors.CreatorError("chroot err: %s" % str(err))
def chroot(chrootdir, bindmounts = None, execute = "/bin/bash"):
def mychroot():
os.chroot(chrootdir)
os.chdir("/")
if configmgr.chroot['saveto']:
savefs = True
saveto = configmgr.chroot['saveto']
wrnmsg = "Can't save chroot fs for dir %s exists" % saveto
if saveto == chrootdir:
savefs = False
wrnmsg = "Dir %s is being used to chroot" % saveto
elif os.path.exists(saveto):
if msger.ask("Dir %s already exists, cleanup and continue?" %
saveto):
shutil.rmtree(saveto, ignore_errors = True)
savefs = True
else:
savefs = False
if savefs:
msger.info("Saving image to directory %s" % saveto)
fs_related.makedirs(os.path.dirname(os.path.abspath(saveto)))
runner.quiet("cp -af %s %s" % (chrootdir, saveto))
devs = ['dev/fd',
'dev/stdin',
'dev/stdout',
'dev/stderr',
'etc/mtab']
ignlst = [os.path.join(saveto, x) for x in devs]
map(os.unlink, filter(os.path.exists, ignlst))
else:
msger.warning(wrnmsg)
dev_null = os.open("/dev/null", os.O_WRONLY)
files_to_check = ["/bin/bash", "/sbin/init"]
architecture_found = False
""" Register statically-linked qemu-arm if it is an ARM fs """
qemu_emulator = None
for ftc in files_to_check:
ftc = "%s/%s" % (chrootdir,ftc)
# Return code of 'file' is "almost always" 0 based on some man pages
# so we need to check the file existance first.
if not os.path.exists(ftc):
continue
for line in runner.outs(['file', ftc]).splitlines():
if 'ARM' in line:
qemu_emulator = misc.setup_qemu_emulator(chrootdir, "arm")
architecture_found = True
break
if 'Intel' in line:
architecture_found = True
break
if architecture_found:
break
os.close(dev_null)
if not architecture_found:
raise errors.CreatorError("Failed to get architecture from any of the "
"following files %s from chroot." \
% files_to_check)
try:
msger.info("Launching shell. Exit to continue.\n"
"----------------------------------")
globalmounts = setup_chrootenv(chrootdir, bindmounts)
subprocess.call(execute, preexec_fn = mychroot, shell=True)
except OSError, err:
raise errors.CreatorError("chroot err: %s" % str(err))
def chroot(chrootdir, bindmounts=None, execute="/bin/bash"):
def mychroot():
os.chroot(chrootdir)
os.chdir("/")
if configmgr.chroot['saveto']:
savefs = True
saveto = configmgr.chroot['saveto']
wrnmsg = "Can't save chroot fs for dir %s exists" % saveto
if saveto == chrootdir:
savefs = False
wrnmsg = "Dir %s is being used to chroot" % saveto
elif os.path.exists(saveto):
if msger.ask("Dir %s already exists, cleanup and continue?" %
saveto):
shutil.rmtree(saveto, ignore_errors=True)
savefs = True
else:
savefs = False
if savefs:
msger.info("Saving image to directory %s" % saveto)
runner.quiet("cp -af %s %s" % (chrootdir, saveto))
devs = [
'dev/fd', 'dev/stdin', 'dev/stdout', 'dev/stderr', 'etc/mtab'
]
ignlst = [os.path.join(saveto, x) for x in devs]
map(os.unlink, filter(os.path.exists, ignlst))
else:
msger.warning(wrnmsg)
dev_null = os.open("/dev/null", os.O_WRONLY)
files_to_check = ["/bin/bash", "/sbin/init"]
architecture_found = False
""" Register statically-linked qemu-arm if it is an ARM fs """
qemu_emulator = None
for ftc in files_to_check:
ftc = "%s/%s" % (chrootdir, ftc)
# Return code of 'file' is "almost always" 0 based on some man pages
# so we need to check the file existance first.
if not os.path.exists(ftc):
continue
for line in runner.outs(['file', ftc]).splitlines():
if 'ARM' in line:
qemu_emulator = misc.setup_qemu_emulator(chrootdir, "arm")
architecture_found = True
break
if 'Intel' in line:
architecture_found = True
break
if architecture_found:
break
os.close(dev_null)
if not architecture_found:
raise errors.CreatorError("Failed to get architecture from any of the "
"following files %s from chroot." \
% files_to_check)
try:
msger.info("Launching shell. Exit to continue.\n"
"----------------------------------")
globalmounts = setup_chrootenv(chrootdir, bindmounts)
subprocess.call(execute, preexec_fn=mychroot, shell=True)
except OSError, err:
raise errors.CreatorError("chroot err: %s" % str(err))
