def append_initrd(initrd, files):
""" Append files to an initrd.
:param str initrd: Path to initrd
:param list files: list of file paths to add
:returns: Path to a new initrd
:rtype: str
The files are added to the initrd by creating a cpio image
of the files (stored at /) and writing the cpio to the end of a
copy of the initrd.
The initrd is not changed, a copy is made before appending the
cpio archive.
"""
qemu_initrd = tempfile.mktemp(prefix="lmc-initrd-", suffix=".img")
shutil.copy2(initrd, qemu_initrd)
ks_dir = tempfile.mkdtemp(prefix="lmc-ksdir-")
for ks in files:
shutil.copy2(ks, ks_dir)
ks_initrd = tempfile.mktemp(prefix="lmc-ks-", suffix=".img")
mkcpio(ks_dir, ks_initrd)
shutil.rmtree(ks_dir)
with open(qemu_initrd, "ab") as initrd_fp:
with open(ks_initrd, "rb") as ks_fp:
while True:
data = ks_fp.read(1024**2)
if not data:
break
initrd_fp.write(data)
os.unlink(ks_initrd)
return qemu_initrd
def mkcpio_test(self):
"""Test mkcpio function"""
with tempfile.TemporaryDirectory(prefix="lorax.test.") as work_dir:
with tempfile.NamedTemporaryFile(prefix="lorax.test.disk.") as disk_img:
mkfakerootdir(work_dir)
mkcpio(work_dir, disk_img.name, compression=None)
self.assertTrue(os.path.exists(disk_img.name))
file_details = get_file_magic(disk_img.name)
self.assertTrue("cpio" in file_details, file_details)
def installimg(self, srcdir, destfile):
'''
installimg SRCDIR DESTFILE
Create a compressed cpio archive of the contents of SRCDIR and place
it in DESTFILE.
If SRCDIR doesn't exist or is empty nothing is created.
Examples:
installimg ${LORAXDIR}/product/ images/product.img
installimg ${LORAXDIR}/updates/ images/updates.img
'''
if not os.path.isdir(self._in(srcdir)) or not os.listdir(self._in(srcdir)):
return
logger.info("Creating image file %s from contents of %s", self._out(destfile), self._in(srcdir))
mkcpio(self._in(srcdir), self._out(destfile))
def installimg(self, srcdir, destfile):
'''
installimg SRCDIR DESTFILE
Create a compressed cpio archive of the contents of SRCDIR and place
it in DESTFILE.
If SRCDIR doesn't exist or is empty nothing is created.
Examples:
installimg ${LORAXDIR}/product/ images/product.img
installimg ${LORAXDIR}/updates/ images/updates.img
'''
if not os.path.isdir(self._in(srcdir)) or not os.listdir(self._in(srcdir)):
return
logger.info("Creating image file %s from contents of %s", self._out(destfile), self._in(srcdir))
mkcpio(self._in(srcdir), self._out(destfile))
def installimg(self, *args):
'''
installimg [--xz|--gzip|--bzip2|--lzma] [-ARG|--ARG=OPTION] SRCDIR DESTFILE
Create a compressed cpio archive of the contents of SRCDIR and place
it in DESTFILE.
If SRCDIR doesn't exist or is empty nothing is created.
Examples:
installimg ${LORAXDIR}/product/ images/product.img
installimg ${LORAXDIR}/updates/ images/updates.img
installimg --xz -6 ${LORAXDIR}/updates/ images/updates.img
installimg --xz -9 --memlimit-compress=3700MiB ${LORAXDIR}/updates/ images/updates.img
Optionally use a different compression type and override the default args
passed to it. The default is xz -9
'''
COMPRESSORS = ("--xz", "--gzip", "--bzip2", "--lzma")
if len(args) < 2:
raise ValueError("Not enough args for installimg.")
srcdir = args[-2]
destfile = args[-1]
if not os.path.isdir(self._in(srcdir)) or not os.listdir(
self._in(srcdir)):
return
compression = "xz"
compressargs = []
if args[0] in COMPRESSORS:
compression = args[0][2:]
for arg in args[1:-2]:
if arg.startswith('-'):
compressargs.append(arg)
else:
raise ValueError("Argument is missing -")
logger.info("Creating image file %s from contents of %s",
self._out(destfile), self._in(srcdir))
logger.debug("Using %s %s compression", compression, compressargs
or "")
mkcpio(self._in(srcdir),
self._out(destfile),
compression=compression,
compressargs=compressargs)
def installimg(self, *args):
'''
installimg [--xz|--gzip|--bzip2|--lzma] [-ARG|--ARG=OPTION] SRCDIR DESTFILE
Create a compressed cpio archive of the contents of SRCDIR and place
it in DESTFILE.
If SRCDIR doesn't exist or is empty nothing is created.
Examples:
installimg ${LORAXDIR}/product/ images/product.img
installimg ${LORAXDIR}/updates/ images/updates.img
installimg --xz -6 ${LORAXDIR}/updates/ images/updates.img
installimg --xz -9 --memlimit-compress=3700MiB ${LORAXDIR}/updates/ images/updates.img
Optionally use a different compression type and override the default args
passed to it. The default is xz -9
'''
COMPRESSORS = ("--xz", "--gzip", "--bzip2", "--lzma")
if len(args) < 2:
raise ValueError("Not enough args for installimg.")
srcdir = args[-2]
destfile = args[-1]
if not os.path.isdir(self._in(srcdir)) or not os.listdir(self._in(srcdir)):
return
compression = "xz"
compressargs = []
if args[0] in COMPRESSORS:
compression = args[0][2:]
for arg in args[1:-2]:
if arg.startswith('-'):
compressargs.append(arg)
else:
raise ValueError("Argument is missing -")
logger.info("Creating image file %s from contents of %s", self._out(destfile), self._in(srcdir))
logger.debug("Using %s %s compression", compression, compressargs or "")
mkcpio(self._in(srcdir), self._out(destfile), compression=compression, compressargs=compressargs)