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< h1 > Source code for pylorax.imgutils< / h1 > < div class = "highlight" > < pre >
< span class = "c" > # imgutils.py - utility functions/classes for building disk images< / span >
< span class = "c" > #< / span >
< span class = "c" > # Copyright (C) 2011-2015 Red Hat, Inc.< / span >
< span class = "c" > #< / span >
< span class = "c" > # This program is free software; you can redistribute it and/or modify< / span >
< span class = "c" > # it under the terms of the GNU General Public License as published by< / span >
< span class = "c" > # the Free Software Foundation; either version 2 of the License, or< / span >
< span class = "c" > # (at your option) any later version.< / span >
< span class = "c" > #< / span >
< span class = "c" > # This program is distributed in the hope that it will be useful,< / span >
< span class = "c" > # but WITHOUT ANY WARRANTY; without even the implied warranty of< / span >
< span class = "c" > # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the< / span >
< span class = "c" > # GNU General Public License for more details.< / span >
< span class = "c" > #< / span >
< span class = "c" > # You should have received a copy of the GNU General Public License< / span >
< span class = "c" > # along with this program. If not, see < http://www.gnu.org/licenses/> .< / span >
< span class = "c" > #< / span >
< span class = "c" > # Author(s): Will Woods < wwoods@redhat.com> < / span >
< span class = "kn" > import< / span > < span class = "nn" > logging< / span >
< span class = "n" > logger< / span > < span class = "o" > =< / span > < span class = "n" > logging< / span > < span class = "o" > .< / span > < span class = "n" > getLogger< / span > < span class = "p" > (< / span > < span class = "s" > " pylorax.imgutils" < / span > < span class = "p" > )< / span >
< span class = "kn" > import< / span > < span class = "nn" > os< / span > < span class = "o" > ,< / span > < span class = "nn" > tempfile< / span >
< span class = "kn" > from< / span > < span class = "nn" > os.path< / span > < span class = "kn" > import< / span > < span class = "n" > join< / span > < span class = "p" > ,< / span > < span class = "n" > dirname< / span >
< span class = "kn" > from< / span > < span class = "nn" > subprocess< / span > < span class = "kn" > import< / span > < span class = "n" > Popen< / span > < span class = "p" > ,< / span > < span class = "n" > PIPE< / span > < span class = "p" > ,< / span > < span class = "n" > CalledProcessError< / span >
< span class = "kn" > import< / span > < span class = "nn" > sys< / span >
< span class = "kn" > import< / span > < span class = "nn" > traceback< / span >
< span class = "kn" > import< / span > < span class = "nn" > multiprocessing< / span >
< span class = "kn" > from< / span > < span class = "nn" > time< / span > < span class = "kn" > import< / span > < span class = "n" > sleep< / span >
< span class = "kn" > from< / span > < span class = "nn" > pylorax.sysutils< / span > < span class = "kn" > import< / span > < span class = "n" > cpfile< / span >
< span class = "kn" > from< / span > < span class = "nn" > pylorax.executils< / span > < span class = "kn" > import< / span > < span class = "n" > execWithRedirect< / span > < span class = "p" > ,< / span > < span class = "n" > execWithCapture< / span >
< span class = "kn" > from< / span > < span class = "nn" > pylorax.executils< / span > < span class = "kn" > import< / span > < span class = "n" > runcmd< / span > < span class = "p" > ,< / span > < span class = "n" > runcmd_output< / span >
< span class = "c" > ######## Functions for making container images (cpio, tar, squashfs) ##########< / span >
< div class = "viewcode-block" id = "compress" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.compress" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > compress< / span > < span class = "p" > (< / span > < span class = "n" > command< / span > < span class = "p" > ,< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > compression< / span > < span class = "o" > =< / span > < span class = "s" > " xz" < / span > < span class = "p" > ,< / span > < span class = "n" > compressargs< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' Make a compressed archive of the given rootdir.< / span >
< span class = "sd" > command is a list of the archiver commands to run< / span >
< span class = "sd" > compression should be " xz" , " gzip" , " lzma" , " bzip2" , or None.< / span >
< span class = "sd" > compressargs will be used on the compression commandline.' ' ' < / span >
< span class = "k" > if< / span > < span class = "n" > compression< / span > < span class = "ow" > not< / span > < span class = "ow" > in< / span > < span class = "p" > (< / span > < span class = "bp" > None< / span > < span class = "p" > ,< / span > < span class = "s" > " xz" < / span > < span class = "p" > ,< / span > < span class = "s" > " gzip" < / span > < span class = "p" > ,< / span > < span class = "s" > " lzma" < / span > < span class = "p" > ,< / span > < span class = "s" > " bzip2" < / span > < span class = "p" > ):< / span >
< span class = "k" > raise< / span > < span class = "ne" > ValueError< / span > < span class = "p" > (< / span > < span class = "s" > " Unknown compression type < / span > < span class = "si" > %s< / span > < span class = "s" > " < / span > < span class = "o" > %< / span > < span class = "n" > compression< / span > < span class = "p" > )< / span >
< span class = "n" > compressargs< / span > < span class = "o" > =< / span > < span class = "n" > compressargs< / span > < span class = "ow" > or< / span > < span class = "p" > [< / span > < span class = "s" > " -9" < / span > < span class = "p" > ]< / span >
< span class = "k" > if< / span > < span class = "n" > compression< / span > < span class = "o" > ==< / span > < span class = "s" > " xz" < / span > < span class = "p" > :< / span >
< span class = "n" > compressargs< / span > < span class = "o" > .< / span > < span class = "n" > insert< / span > < span class = "p" > (< / span > < span class = "mi" > 0< / span > < span class = "p" > ,< / span > < span class = "s" > " --check=crc32" < / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "n" > compression< / span > < span class = "ow" > is< / span > < span class = "bp" > None< / span > < span class = "p" > :< / span >
< span class = "n" > compression< / span > < span class = "o" > =< / span > < span class = "s" > " cat" < / span > < span class = "c" > # this is a little silly< / span >
< span class = "n" > compressargs< / span > < span class = "o" > =< / span > < span class = "p" > []< / span >
< span class = "c" > # make compression run with multiple threads if possible< / span >
< span class = "k" > if< / span > < span class = "n" > compression< / span > < span class = "ow" > in< / span > < span class = "p" > (< / span > < span class = "s" > " xz" < / span > < span class = "p" > ,< / span > < span class = "s" > " lzma" < / span > < span class = "p" > ):< / span >
< span class = "n" > compressargs< / span > < span class = "o" > .< / span > < span class = "n" > insert< / span > < span class = "p" > (< / span > < span class = "mi" > 0< / span > < span class = "p" > ,< / span > < span class = "s" > " -T< / span > < span class = "si" > %d< / span > < span class = "s" > " < / span > < span class = "o" > %< / span > < span class = "n" > multiprocessing< / span > < span class = "o" > .< / span > < span class = "n" > cpu_count< / span > < span class = "p" > ())< / span >
< span class = "k" > elif< / span > < span class = "n" > compression< / span > < span class = "o" > ==< / span > < span class = "s" > " gzip" < / span > < span class = "p" > :< / span >
< span class = "n" > compression< / span > < span class = "o" > =< / span > < span class = "s" > " pigz" < / span >
< span class = "n" > compressargs< / span > < span class = "o" > .< / span > < span class = "n" > insert< / span > < span class = "p" > (< / span > < span class = "mi" > 0< / span > < span class = "p" > ,< / span > < span class = "s" > " -p< / span > < span class = "si" > %d< / span > < span class = "s" > " < / span > < span class = "o" > %< / span > < span class = "n" > multiprocessing< / span > < span class = "o" > .< / span > < span class = "n" > cpu_count< / span > < span class = "p" > ())< / span >
< span class = "k" > elif< / span > < span class = "n" > compression< / span > < span class = "o" > ==< / span > < span class = "s" > " bzip2" < / span > < span class = "p" > :< / span >
< span class = "n" > compression< / span > < span class = "o" > =< / span > < span class = "s" > " pbzip2" < / span >
< span class = "n" > compressargs< / span > < span class = "o" > .< / span > < span class = "n" > insert< / span > < span class = "p" > (< / span > < span class = "mi" > 0< / span > < span class = "p" > ,< / span > < span class = "s" > " -p< / span > < span class = "si" > %d< / span > < span class = "s" > " < / span > < span class = "o" > %< / span > < span class = "n" > multiprocessing< / span > < span class = "o" > .< / span > < span class = "n" > cpu_count< / span > < span class = "p" > ())< / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > debug< / span > < span class = "p" > (< / span > < span class = "s" > " find < / span > < span class = "si" > %s< / span > < span class = "s" > -print0 |< / span > < span class = "si" > %s< / span > < span class = "s" > | < / span > < span class = "si" > %s< / span > < span class = "s" > < / span > < span class = "si" > %s< / span > < span class = "s" > > < / span > < span class = "si" > %s< / span > < span class = "s" > " < / span > < span class = "p" > ,< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "s" > " " < / span > < span class = "o" > .< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > command< / span > < span class = "p" > ),< / span >
< span class = "n" > compression< / span > < span class = "p" > ,< / span > < span class = "s" > " " < / span > < span class = "o" > .< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > compressargs< / span > < span class = "p" > ),< / span > < span class = "n" > outfile< / span > < span class = "p" > )< / span >
< span class = "n" > find< / span > < span class = "p" > ,< / span > < span class = "n" > archive< / span > < span class = "p" > ,< / span > < span class = "n" > comp< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ,< / span > < span class = "bp" > None< / span > < span class = "p" > ,< / span > < span class = "bp" > None< / span >
< span class = "k" > try< / span > < span class = "p" > :< / span >
< span class = "n" > find< / span > < span class = "o" > =< / span > < span class = "n" > Popen< / span > < span class = "p" > ([< / span > < span class = "s" > " find" < / span > < span class = "p" > ,< / span > < span class = "s" > " ." < / span > < span class = "p" > ,< / span > < span class = "s" > " -print0" < / span > < span class = "p" > ],< / span > < span class = "n" > stdout< / span > < span class = "o" > =< / span > < span class = "n" > PIPE< / span > < span class = "p" > ,< / span > < span class = "n" > cwd< / span > < span class = "o" > =< / span > < span class = "n" > rootdir< / span > < span class = "p" > )< / span >
< span class = "n" > archive< / span > < span class = "o" > =< / span > < span class = "n" > Popen< / span > < span class = "p" > (< / span > < span class = "n" > command< / span > < span class = "p" > ,< / span > < span class = "n" > stdin< / span > < span class = "o" > =< / span > < span class = "n" > find< / span > < span class = "o" > .< / span > < span class = "n" > stdout< / span > < span class = "p" > ,< / span > < span class = "n" > stdout< / span > < span class = "o" > =< / span > < span class = "n" > PIPE< / span > < span class = "p" > ,< / span > < span class = "n" > cwd< / span > < span class = "o" > =< / span > < span class = "n" > rootdir< / span > < span class = "p" > )< / span >
< span class = "n" > comp< / span > < span class = "o" > =< / span > < span class = "n" > Popen< / span > < span class = "p" > ([< / span > < span class = "n" > compression< / span > < span class = "p" > ]< / span > < span class = "o" > +< / span > < span class = "n" > compressargs< / span > < span class = "p" > ,< / span >
< span class = "n" > stdin< / span > < span class = "o" > =< / span > < span class = "n" > archive< / span > < span class = "o" > .< / span > < span class = "n" > stdout< / span > < span class = "p" > ,< / span > < span class = "n" > stdout< / span > < span class = "o" > =< / span > < span class = "nb" > open< / span > < span class = "p" > (< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "s" > " wb" < / span > < span class = "p" > ))< / span >
< span class = "n" > comp< / span > < span class = "o" > .< / span > < span class = "n" > wait< / span > < span class = "p" > ()< / span >
< span class = "k" > return< / span > < span class = "n" > comp< / span > < span class = "o" > .< / span > < span class = "n" > returncode< / span >
< span class = "k" > except< / span > < span class = "ne" > OSError< / span > < span class = "k" > as< / span > < span class = "n" > e< / span > < span class = "p" > :< / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > error< / span > < span class = "p" > (< / span > < span class = "n" > e< / span > < span class = "p" > )< / span >
< span class = "c" > # Kill off any hanging processes< / span >
< span class = "nb" > list< / span > < span class = "p" > (< / span > < span class = "n" > p< / span > < span class = "o" > .< / span > < span class = "n" > kill< / span > < span class = "p" > ()< / span > < span class = "k" > for< / span > < span class = "n" > p< / span > < span class = "ow" > in< / span > < span class = "p" > (< / span > < span class = "n" > find< / span > < span class = "p" > ,< / span > < span class = "n" > archive< / span > < span class = "p" > ,< / span > < span class = "n" > comp< / span > < span class = "p" > )< / span > < span class = "k" > if< / span > < span class = "n" > p< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "mi" > 1< / span >
< / div >
< div class = "viewcode-block" id = "mkcpio" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.mkcpio" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > mkcpio< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > compression< / span > < span class = "o" > =< / span > < span class = "s" > " xz" < / span > < span class = "p" > ,< / span > < span class = "n" > compressargs< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "n" > compressargs< / span > < span class = "o" > =< / span > < span class = "n" > compressargs< / span > < span class = "ow" > or< / span > < span class = "p" > [< / span > < span class = "s" > " -9" < / span > < span class = "p" > ]< / span >
< span class = "k" > return< / span > < span class = "n" > compress< / span > < span class = "p" > ([< / span > < span class = "s" > " cpio" < / span > < span class = "p" > ,< / span > < span class = "s" > " --null" < / span > < span class = "p" > ,< / span > < span class = "s" > " --quiet" < / span > < span class = "p" > ,< / span > < span class = "s" > " -H" < / span > < span class = "p" > ,< / span > < span class = "s" > " newc" < / span > < span class = "p" > ,< / span > < span class = "s" > " -o" < / span > < span class = "p" > ],< / span >
< span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > compression< / span > < span class = "p" > ,< / span > < span class = "n" > compressargs< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "mktar" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.mktar" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > mktar< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > compression< / span > < span class = "o" > =< / span > < span class = "s" > " xz" < / span > < span class = "p" > ,< / span > < span class = "n" > compressargs< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "n" > compressargs< / span > < span class = "o" > =< / span > < span class = "n" > compressargs< / span > < span class = "ow" > or< / span > < span class = "p" > [< / span > < span class = "s" > " -9" < / span > < span class = "p" > ]< / span >
< span class = "k" > return< / span > < span class = "n" > compress< / span > < span class = "p" > ([< / span > < span class = "s" > " tar" < / span > < span class = "p" > ,< / span > < span class = "s" > " --no-recursion" < / span > < span class = "p" > ,< / span > < span class = "s" > " --selinux" < / span > < span class = "p" > ,< / span > < span class = "s" > " --acls" < / span > < span class = "p" > ,< / span > < span class = "s" > " --xattrs" < / span > < span class = "p" > ,< / span > < span class = "s" > " -cf-" < / span > < span class = "p" > ,< / span > < span class = "s" > " --null" < / span > < span class = "p" > ,< / span > < span class = "s" > " -T-" < / span > < span class = "p" > ],< / span >
< span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > compression< / span > < span class = "p" > ,< / span > < span class = "n" > compressargs< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "mksquashfs" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.mksquashfs" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > mksquashfs< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > compression< / span > < span class = "o" > =< / span > < span class = "s" > " default" < / span > < span class = "p" > ,< / span > < span class = "n" > compressargs< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' Make a squashfs image containing the given rootdir.' ' ' < / span >
< span class = "n" > compressargs< / span > < span class = "o" > =< / span > < span class = "n" > compressargs< / span > < span class = "ow" > or< / span > < span class = "p" > []< / span >
< span class = "k" > if< / span > < span class = "n" > compression< / span > < span class = "o" > !=< / span > < span class = "s" > " default" < / span > < span class = "p" > :< / span >
< span class = "n" > compressargs< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s" > " -comp" < / span > < span class = "p" > ,< / span > < span class = "n" > compression< / span > < span class = "p" > ]< / span > < span class = "o" > +< / span > < span class = "n" > compressargs< / span >
< span class = "k" > return< / span > < span class = "n" > execWithRedirect< / span > < span class = "p" > (< / span > < span class = "s" > " mksquashfs" < / span > < span class = "p" > ,< / span > < span class = "p" > [< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ]< / span > < span class = "o" > +< / span > < span class = "n" > compressargs< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "mkrootfsimg" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.mkrootfsimg" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > mkrootfsimg< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > label< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "o" > =< / span > < span class = "mi" > 2< / span > < span class = "p" > ,< / span > < span class = "n" > sysroot< / span > < span class = "o" > =< / span > < span class = "s" > " " < / span > < span class = "p" > ):< / span >
< span class = "sd" > " " " < / span >
< span class = "sd" > Make rootfs image from a directory< / span >
< span class = "sd" > :param str rootdir: Root directory< / span >
< span class = "sd" > :param str outfile: Path of output image file< / span >
< span class = "sd" > :param str label: Filesystem label< / span >
< span class = "sd" > :param int size: Size of the image in GiB, if None computed automatically< / span >
< span class = "sd" > :param str sysroot: path to system (deployment) root relative to physical root< / span >
< span class = "sd" > " " " < / span >
< span class = "k" > if< / span > < span class = "n" > size< / span > < span class = "p" > :< / span >
< span class = "n" > fssize< / span > < span class = "o" > =< / span > < span class = "n" > size< / span > < span class = "o" > *< / span > < span class = "p" > (< / span > < span class = "mi" > 1024< / span > < span class = "o" > *< / span > < span class = "mi" > 1024< / span > < span class = "o" > *< / span > < span class = "mi" > 1024< / span > < span class = "p" > )< / span > < span class = "c" > # 2GB sparse file compresses down to nothin' < / span >
< span class = "k" > else< / span > < span class = "p" > :< / span >
< span class = "n" > fssize< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "c" > # Let mkext4img figure out the needed size< / span >
< span class = "n" > mkext4img< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > label< / span > < span class = "o" > =< / span > < span class = "n" > label< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "o" > =< / span > < span class = "n" > fssize< / span > < span class = "p" > )< / span >
< span class = "c" > # Reset selinux context on new rootfs< / span >
< span class = "k" > with< / span > < span class = "n" > LoopDev< / span > < span class = "p" > (< / span > < span class = "n" > outfile< / span > < span class = "p" > )< / span > < span class = "k" > as< / span > < span class = "n" > loopdev< / span > < span class = "p" > :< / span >
< span class = "k" > with< / span > < span class = "n" > Mount< / span > < span class = "p" > (< / span > < span class = "n" > loopdev< / span > < span class = "p" > )< / span > < span class = "k" > as< / span > < span class = "n" > mnt< / span > < span class = "p" > :< / span >
< span class = "n" > cmd< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s" > " setfiles" < / span > < span class = "p" > ,< / span > < span class = "s" > " -e" < / span > < span class = "p" > ,< / span > < span class = "s" > " /proc" < / span > < span class = "p" > ,< / span > < span class = "s" > " -e" < / span > < span class = "p" > ,< / span > < span class = "s" > " /sys" < / span > < span class = "p" > ,< / span > < span class = "s" > " -e" < / span > < span class = "p" > ,< / span > < span class = "s" > " /dev" < / span > < span class = "p" > ,< / span > < span class = "s" > " -e" < / span > < span class = "p" > ,< / span > < span class = "s" > " /install" < / span > < span class = "p" > ,< / span >
< span class = "s" > " /etc/selinux/targeted/contexts/files/file_contexts" < / span > < span class = "p" > ,< / span > < span class = "s" > " /" < / span > < span class = "p" > ]< / span >
< span class = "n" > root< / span > < span class = "o" > =< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > mnt< / span > < span class = "p" > ,< / span > < span class = "n" > sysroot< / span > < span class = "o" > .< / span > < span class = "n" > lstrip< / span > < span class = "p" > (< / span > < span class = "s" > " /" < / span > < span class = "p" > ))< / span >
< span class = "n" > runcmd< / span > < span class = "p" > (< / span > < span class = "n" > cmd< / span > < span class = "p" > ,< / span > < span class = "n" > root< / span > < span class = "o" > =< / span > < span class = "n" > root< / span > < span class = "p" > )< / span >
< span class = "c" > ######## Utility functions ###############################################< / span >
< / div >
< div class = "viewcode-block" id = "mksparse" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.mksparse" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > mksparse< / span > < span class = "p" > (< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' use os.ftruncate to create a sparse file of the given size.' ' ' < / span >
< span class = "n" > fobj< / span > < span class = "o" > =< / span > < span class = "nb" > open< / span > < span class = "p" > (< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "s" > " w" < / span > < span class = "p" > )< / span >
< span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > ftruncate< / span > < span class = "p" > (< / span > < span class = "n" > fobj< / span > < span class = "o" > .< / span > < span class = "n" > fileno< / span > < span class = "p" > (),< / span > < span class = "n" > size< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "mkqcow2" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.mkqcow2" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > mkqcow2< / span > < span class = "p" > (< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > ,< / span > < span class = "n" > options< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' use qemu-img to create a file of the given size.< / span >
< span class = "sd" > options is a list of options passed to qemu-img< / span >
< span class = "sd" > Default format is qcow2, override by passing " -f" , fmt< / span >
< span class = "sd" > in options.< / span >
< span class = "sd" > ' ' ' < / span >
< span class = "n" > options< / span > < span class = "o" > =< / span > < span class = "n" > options< / span > < span class = "ow" > or< / span > < span class = "p" > []< / span >
< span class = "k" > if< / span > < span class = "s" > " -f" < / span > < span class = "ow" > not< / span > < span class = "ow" > in< / span > < span class = "n" > options< / span > < span class = "p" > :< / span >
< span class = "n" > options< / span > < span class = "o" > .< / span > < span class = "n" > extend< / span > < span class = "p" > ([< / span > < span class = "s" > " -f" < / span > < span class = "p" > ,< / span > < span class = "s" > " qcow2" < / span > < span class = "p" > ])< / span >
< span class = "n" > runcmd< / span > < span class = "p" > ([< / span > < span class = "s" > " qemu-img" < / span > < span class = "p" > ,< / span > < span class = "s" > " create" < / span > < span class = "p" > ]< / span > < span class = "o" > +< / span > < span class = "n" > options< / span > < span class = "o" > +< / span > < span class = "p" > [< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "nb" > str< / span > < span class = "p" > (< / span > < span class = "n" > size< / span > < span class = "p" > )])< / span >
< / div >
< div class = "viewcode-block" id = "loop_attach" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.loop_attach" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > loop_attach< / span > < span class = "p" > (< / span > < span class = "n" > outfile< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' Attach a loop device to the given file. Return the loop device name.< / span >
< span class = "sd" > Raises CalledProcessError if losetup fails.' ' ' < / span >
< span class = "n" > dev< / span > < span class = "o" > =< / span > < span class = "n" > runcmd_output< / span > < span class = "p" > ([< / span > < span class = "s" > " losetup" < / span > < span class = "p" > ,< / span > < span class = "s" > " --find" < / span > < span class = "p" > ,< / span > < span class = "s" > " --show" < / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ])< / span >
< span class = "k" > return< / span > < span class = "n" > dev< / span > < span class = "o" > .< / span > < span class = "n" > strip< / span > < span class = "p" > ()< / span >
< / div >
< div class = "viewcode-block" id = "loop_detach" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.loop_detach" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > loop_detach< / span > < span class = "p" > (< / span > < span class = "n" > loopdev< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' Detach the given loop device. Return False on failure.' ' ' < / span >
< span class = "k" > return< / span > < span class = "p" > (< / span > < span class = "n" > execWithRedirect< / span > < span class = "p" > (< / span > < span class = "s" > " losetup" < / span > < span class = "p" > ,< / span > < span class = "p" > [< / span > < span class = "s" > " --detach" < / span > < span class = "p" > ,< / span > < span class = "n" > loopdev< / span > < span class = "p" > ])< / span > < span class = "o" > ==< / span > < span class = "mi" > 0< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "get_loop_name" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.get_loop_name" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > get_loop_name< / span > < span class = "p" > (< / span > < span class = "n" > path< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' Return the loop device associated with the path.< / span >
< span class = "sd" > Raises RuntimeError if more than one loop is associated' ' ' < / span >
< span class = "n" > buf< / span > < span class = "o" > =< / span > < span class = "n" > runcmd_output< / span > < span class = "p" > ([< / span > < span class = "s" > " losetup" < / span > < span class = "p" > ,< / span > < span class = "s" > " -j" < / span > < span class = "p" > ,< / span > < span class = "n" > path< / span > < span class = "p" > ])< / span >
< span class = "k" > if< / span > < span class = "nb" > len< / span > < span class = "p" > (< / span > < span class = "n" > buf< / span > < span class = "o" > .< / span > < span class = "n" > splitlines< / span > < span class = "p" > ())< / span > < span class = "o" > > < / span > < span class = "mi" > 1< / span > < span class = "p" > :< / span >
< span class = "c" > # there should never be more than one loop device listed< / span >
< span class = "k" > raise< / span > < span class = "ne" > RuntimeError< / span > < span class = "p" > (< / span > < span class = "s" > " multiple loops associated with < / span > < span class = "si" > %s< / span > < span class = "s" > " < / span > < span class = "o" > %< / span > < span class = "n" > path< / span > < span class = "p" > )< / span >
< span class = "n" > name< / span > < span class = "o" > =< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > basename< / span > < span class = "p" > (< / span > < span class = "n" > buf< / span > < span class = "o" > .< / span > < span class = "n" > split< / span > < span class = "p" > (< / span > < span class = "s" > " :" < / span > < span class = "p" > )[< / span > < span class = "mi" > 0< / span > < span class = "p" > ])< / span >
< span class = "k" > return< / span > < span class = "n" > name< / span >
< / div >
< div class = "viewcode-block" id = "dm_attach" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.dm_attach" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > dm_attach< / span > < span class = "p" > (< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > ,< / span > < span class = "n" > name< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' Attach a devicemapper device to the given device, with the given size.< / span >
< span class = "sd" > If name is None, a random name will be chosen. Returns the device name.< / span >
< span class = "sd" > raises CalledProcessError if dmsetup fails.' ' ' < / span >
< span class = "k" > if< / span > < span class = "n" > name< / span > < span class = "ow" > is< / span > < span class = "bp" > None< / span > < span class = "p" > :< / span >
< span class = "n" > name< / span > < span class = "o" > =< / span > < span class = "n" > tempfile< / span > < span class = "o" > .< / span > < span class = "n" > mktemp< / span > < span class = "p" > (< / span > < span class = "n" > prefix< / span > < span class = "o" > =< / span > < span class = "s" > " lorax.imgutils." < / span > < span class = "p" > ,< / span > < span class = "nb" > dir< / span > < span class = "o" > =< / span > < span class = "s" > " " < / span > < span class = "p" > )< / span >
< span class = "n" > runcmd< / span > < span class = "p" > ([< / span > < span class = "s" > " dmsetup" < / span > < span class = "p" > ,< / span > < span class = "s" > " create" < / span > < span class = "p" > ,< / span > < span class = "n" > name< / span > < span class = "p" > ,< / span > < span class = "s" > " --table" < / span > < span class = "p" > ,< / span >
< span class = "s" > " 0 < / span > < span class = "si" > %i< / span > < span class = "s" > linear < / span > < span class = "si" > %s< / span > < span class = "s" > 0" < / span > < span class = "o" > %< / span > < span class = "p" > (< / span > < span class = "n" > size< / span > < span class = "o" > /< / span > < span class = "mi" > 512< / span > < span class = "p" > ,< / span > < span class = "n" > dev< / span > < span class = "p" > )])< / span >
< span class = "k" > return< / span > < span class = "n" > name< / span >
< / div >
< div class = "viewcode-block" id = "dm_detach" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.dm_detach" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > dm_detach< / span > < span class = "p" > (< / span > < span class = "n" > dev< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' Detach the named devicemapper device. Returns False if dmsetup fails.' ' ' < / span >
< span class = "n" > dev< / span > < span class = "o" > =< / span > < span class = "n" > dev< / span > < span class = "o" > .< / span > < span class = "n" > replace< / span > < span class = "p" > (< / span > < span class = "s" > " /dev/mapper/" < / span > < span class = "p" > ,< / span > < span class = "s" > " " < / span > < span class = "p" > )< / span > < span class = "c" > # strip prefix, if it' s there< / span >
< span class = "k" > return< / span > < span class = "n" > execWithRedirect< / span > < span class = "p" > (< / span > < span class = "s" > " dmsetup" < / span > < span class = "p" > ,< / span > < span class = "p" > [< / span > < span class = "s" > " remove" < / span > < span class = "p" > ,< / span > < span class = "n" > dev< / span > < span class = "p" > ])< / span >
< / div >
< div class = "viewcode-block" id = "mount" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.mount" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > mount< / span > < span class = "p" > (< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "n" > opts< / span > < span class = "o" > =< / span > < span class = "s" > " " < / span > < span class = "p" > ,< / span > < span class = "n" > mnt< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' Mount the given device at the given mountpoint, using the given opts.< / span >
< span class = "sd" > opts should be a comma-separated string of mount options.< / span >
< span class = "sd" > if mnt is none, a temporary directory will be created and its path will be< / span >
< span class = "sd" > returned.< / span >
< span class = "sd" > raises CalledProcessError if mount fails.' ' ' < / span >
< span class = "k" > if< / span > < span class = "n" > mnt< / span > < span class = "ow" > is< / span > < span class = "bp" > None< / span > < span class = "p" > :< / span >
< span class = "n" > mnt< / span > < span class = "o" > =< / span > < span class = "n" > tempfile< / span > < span class = "o" > .< / span > < span class = "n" > mkdtemp< / span > < span class = "p" > (< / span > < span class = "n" > prefix< / span > < span class = "o" > =< / span > < span class = "s" > " lorax.imgutils." < / span > < span class = "p" > )< / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > debug< / span > < span class = "p" > (< / span > < span class = "s" > " make tmp mountdir < / span > < span class = "si" > %s< / span > < span class = "s" > " < / span > < span class = "p" > ,< / span > < span class = "n" > mnt< / span > < span class = "p" > )< / span >
< span class = "n" > cmd< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s" > " mount" < / span > < span class = "p" > ]< / span >
< span class = "k" > if< / span > < span class = "n" > opts< / span > < span class = "p" > :< / span >
< span class = "n" > cmd< / span > < span class = "o" > +=< / span > < span class = "p" > [< / span > < span class = "s" > " -o" < / span > < span class = "p" > ,< / span > < span class = "n" > opts< / span > < span class = "p" > ]< / span >
< span class = "n" > cmd< / span > < span class = "o" > +=< / span > < span class = "p" > [< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "n" > mnt< / span > < span class = "p" > ]< / span >
< span class = "n" > runcmd< / span > < span class = "p" > (< / span > < span class = "n" > cmd< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "n" > mnt< / span >
< / div >
< div class = "viewcode-block" id = "umount" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.umount" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > umount< / span > < span class = "p" > (< / span > < span class = "n" > mnt< / span > < span class = "p" > ,< / span > < span class = "n" > lazy< / span > < span class = "o" > =< / span > < span class = "bp" > False< / span > < span class = "p" > ,< / span > < span class = "n" > maxretry< / span > < span class = "o" > =< / span > < span class = "mi" > 3< / span > < span class = "p" > ,< / span > < span class = "n" > retrysleep< / span > < span class = "o" > =< / span > < span class = "mf" > 1.0< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' Unmount the given mountpoint. If lazy is True, do a lazy umount (-l).< / span >
< span class = "sd" > If the mount was a temporary dir created by mount, it will be deleted.< / span >
< span class = "sd" > raises CalledProcessError if umount fails.' ' ' < / span >
< span class = "n" > cmd< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s" > " umount" < / span > < span class = "p" > ]< / span >
< span class = "k" > if< / span > < span class = "n" > lazy< / span > < span class = "p" > :< / span > < span class = "n" > cmd< / span > < span class = "o" > +=< / span > < span class = "p" > [< / span > < span class = "s" > " -l" < / span > < span class = "p" > ]< / span >
< span class = "n" > cmd< / span > < span class = "o" > +=< / span > < span class = "p" > [< / span > < span class = "n" > mnt< / span > < span class = "p" > ]< / span >
< span class = "n" > count< / span > < span class = "o" > =< / span > < span class = "mi" > 0< / span >
< span class = "k" > while< / span > < span class = "n" > maxretry< / span > < span class = "o" > > < / span > < span class = "mi" > 0< / span > < span class = "p" > :< / span >
< span class = "k" > try< / span > < span class = "p" > :< / span >
< span class = "n" > rv< / span > < span class = "o" > =< / span > < span class = "n" > runcmd< / span > < span class = "p" > (< / span > < span class = "n" > cmd< / span > < span class = "p" > )< / span >
< span class = "k" > except< / span > < span class = "n" > CalledProcessError< / span > < span class = "p" > :< / span >
< span class = "n" > count< / span > < span class = "o" > +=< / span > < span class = "mi" > 1< / span >
< span class = "k" > if< / span > < span class = "n" > count< / span > < span class = "o" > ==< / span > < span class = "n" > maxretry< / span > < span class = "p" > :< / span >
< span class = "k" > raise< / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > warn< / span > < span class = "p" > (< / span > < span class = "s" > " failed to unmount < / span > < span class = "si" > %s< / span > < span class = "s" > . retrying (< / span > < span class = "si" > %d< / span > < span class = "s" > /< / span > < span class = "si" > %d< / span > < span class = "s" > )..." < / span > < span class = "p" > ,< / span >
< span class = "n" > mnt< / span > < span class = "p" > ,< / span > < span class = "n" > count< / span > < span class = "p" > ,< / span > < span class = "n" > maxretry< / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > getEffectiveLevel< / span > < span class = "p" > ()< / span > < span class = "o" > < =< / span > < span class = "n" > logging< / span > < span class = "o" > .< / span > < span class = "n" > DEBUG< / span > < span class = "p" > :< / span >
< span class = "n" > fuser< / span > < span class = "o" > =< / span > < span class = "n" > execWithCapture< / span > < span class = "p" > (< / span > < span class = "s" > " fuser" < / span > < span class = "p" > ,< / span > < span class = "p" > [< / span > < span class = "s" > " -vm" < / span > < span class = "p" > ,< / span > < span class = "n" > mnt< / span > < span class = "p" > ])< / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > debug< / span > < span class = "p" > (< / span > < span class = "s" > " fuser -vm:< / span > < span class = "se" > \n< / span > < span class = "si" > %s< / span > < span class = "se" > \n< / span > < span class = "s" > " < / span > < span class = "p" > ,< / span > < span class = "n" > fuser< / span > < span class = "p" > )< / span >
< span class = "n" > sleep< / span > < span class = "p" > (< / span > < span class = "n" > retrysleep< / span > < span class = "p" > )< / span >
< span class = "k" > else< / span > < span class = "p" > :< / span >
< span class = "k" > break< / span >
< span class = "k" > if< / span > < span class = "s" > ' lorax.imgutils' < / span > < span class = "ow" > in< / span > < span class = "n" > mnt< / span > < span class = "p" > :< / span >
< span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > rmdir< / span > < span class = "p" > (< / span > < span class = "n" > mnt< / span > < span class = "p" > )< / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > debug< / span > < span class = "p" > (< / span > < span class = "s" > " remove tmp mountdir < / span > < span class = "si" > %s< / span > < span class = "s" > " < / span > < span class = "p" > ,< / span > < span class = "n" > mnt< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "p" > (< / span > < span class = "n" > rv< / span > < span class = "o" > ==< / span > < span class = "mi" > 0< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "copytree" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.copytree" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > copytree< / span > < span class = "p" > (< / span > < span class = "n" > src< / span > < span class = "p" > ,< / span > < span class = "n" > dest< / span > < span class = "p" > ,< / span > < span class = "n" > preserve< / span > < span class = "o" > =< / span > < span class = "bp" > True< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' Copy a tree of files using cp -a, thus preserving modes, timestamps,< / span >
< span class = "sd" > links, acls, sparse files, xattrs, selinux contexts, etc.< / span >
< span class = "sd" > If preserve is False, uses cp -R (useful for modeless filesystems)< / span >
< span class = "sd" > raises CalledProcessError if copy fails.' ' ' < / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > debug< / span > < span class = "p" > (< / span > < span class = "s" > " copytree < / span > < span class = "si" > %s< / span > < span class = "s" > < / span > < span class = "si" > %s< / span > < span class = "s" > " < / span > < span class = "p" > ,< / span > < span class = "n" > src< / span > < span class = "p" > ,< / span > < span class = "n" > dest< / span > < span class = "p" > )< / span >
< span class = "n" > cp< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s" > " cp" < / span > < span class = "p" > ,< / span > < span class = "s" > " -a" < / span > < span class = "p" > ]< / span > < span class = "k" > if< / span > < span class = "n" > preserve< / span > < span class = "k" > else< / span > < span class = "p" > [< / span > < span class = "s" > " cp" < / span > < span class = "p" > ,< / span > < span class = "s" > " -R" < / span > < span class = "p" > ,< / span > < span class = "s" > " -L" < / span > < span class = "p" > ]< / span >
< span class = "n" > cp< / span > < span class = "o" > +=< / span > < span class = "p" > [< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > src< / span > < span class = "p" > ,< / span > < span class = "s" > " ." < / span > < span class = "p" > ),< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > abspath< / span > < span class = "p" > (< / span > < span class = "n" > dest< / span > < span class = "p" > )]< / span >
< span class = "n" > runcmd< / span > < span class = "p" > (< / span > < span class = "n" > cp< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "do_grafts" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.do_grafts" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > do_grafts< / span > < span class = "p" > (< / span > < span class = "n" > grafts< / span > < span class = "p" > ,< / span > < span class = "n" > dest< / span > < span class = "p" > ,< / span > < span class = "n" > preserve< / span > < span class = "o" > =< / span > < span class = "bp" > True< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' Copy each of the items listed in grafts into dest.< / span >
< span class = "sd" > If the key ends with ' /' it' s assumed to be a directory which should be< / span >
< span class = "sd" > created, otherwise just the leading directories will be created.' ' ' < / span >
< span class = "k" > for< / span > < span class = "n" > imgpath< / span > < span class = "p" > ,< / span > < span class = "n" > filename< / span > < span class = "ow" > in< / span > < span class = "n" > grafts< / span > < span class = "o" > .< / span > < span class = "n" > items< / span > < span class = "p" > ():< / span >
< span class = "k" > if< / span > < span class = "n" > imgpath< / span > < span class = "p" > [< / span > < span class = "o" > -< / span > < span class = "mi" > 1< / span > < span class = "p" > ]< / span > < span class = "o" > ==< / span > < span class = "s" > ' /' < / span > < span class = "p" > :< / span >
< span class = "n" > targetdir< / span > < span class = "o" > =< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > dest< / span > < span class = "p" > ,< / span > < span class = "n" > imgpath< / span > < span class = "p" > )< / span >
< span class = "n" > imgpath< / span > < span class = "o" > =< / span > < span class = "n" > imgpath< / span > < span class = "p" > [:< / span > < span class = "o" > -< / span > < span class = "mi" > 1< / span > < span class = "p" > ]< / span >
< span class = "k" > else< / span > < span class = "p" > :< / span >
< span class = "n" > targetdir< / span > < span class = "o" > =< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > dest< / span > < span class = "p" > ,< / span > < span class = "n" > dirname< / span > < span class = "p" > (< / span > < span class = "n" > imgpath< / span > < span class = "p" > ))< / span >
< span class = "k" > if< / span > < span class = "ow" > not< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > isdir< / span > < span class = "p" > (< / span > < span class = "n" > targetdir< / span > < span class = "p" > ):< / span >
< span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > makedirs< / span > < span class = "p" > (< / span > < span class = "n" > targetdir< / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > isdir< / span > < span class = "p" > (< / span > < span class = "n" > filename< / span > < span class = "p" > ):< / span >
< span class = "n" > copytree< / span > < span class = "p" > (< / span > < span class = "n" > filename< / span > < span class = "p" > ,< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > dest< / span > < span class = "p" > ,< / span > < span class = "n" > imgpath< / span > < span class = "p" > ),< / span > < span class = "n" > preserve< / span > < span class = "p" > )< / span >
< span class = "k" > else< / span > < span class = "p" > :< / span >
< span class = "n" > cpfile< / span > < span class = "p" > (< / span > < span class = "n" > filename< / span > < span class = "p" > ,< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > dest< / span > < span class = "p" > ,< / span > < span class = "n" > imgpath< / span > < span class = "p" > ))< / span >
< / div >
< div class = "viewcode-block" id = "round_to_blocks" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.round_to_blocks" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > round_to_blocks< / span > < span class = "p" > (< / span > < span class = "n" > size< / span > < span class = "p" > ,< / span > < span class = "n" > blocksize< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' If size isn' t a multiple of blocksize, round up to the next multiple' ' ' < / span >
< span class = "n" > diff< / span > < span class = "o" > =< / span > < span class = "n" > size< / span > < span class = "o" > %< / span > < span class = "n" > blocksize< / span >
< span class = "k" > if< / span > < span class = "n" > diff< / span > < span class = "ow" > or< / span > < span class = "ow" > not< / span > < span class = "n" > size< / span > < span class = "p" > :< / span >
< span class = "n" > size< / span > < span class = "o" > +=< / span > < span class = "n" > blocksize< / span > < span class = "o" > -< / span > < span class = "n" > diff< / span >
< span class = "k" > return< / span > < span class = "n" > size< / span >
< span class = "c" > # TODO: move filesystem data outside this function< / span > < / div >
2015-07-10 18:39:39 +00:00
< div class = "viewcode-block" id = "estimate_size" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.estimate_size" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > estimate_size< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ,< / span > < span class = "n" > fstype< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ,< / span > < span class = "n" > blocksize< / span > < span class = "o" > =< / span > < span class = "mi" > 4096< / span > < span class = "p" > ,< / span > < span class = "n" > overhead< / span > < span class = "o" > =< / span > < span class = "mi" > 256< / span > < span class = "p" > ):< / span >
2015-05-11 23:44:09 +00:00
< span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "n" > graft< / span > < span class = "ow" > or< / span > < span class = "p" > {}< / span >
< span class = "n" > getsize< / span > < span class = "o" > =< / span > < span class = "k" > lambda< / span > < span class = "n" > f< / span > < span class = "p" > :< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > lstat< / span > < span class = "p" > (< / span > < span class = "n" > f< / span > < span class = "p" > )< / span > < span class = "o" > .< / span > < span class = "n" > st_size< / span >
< span class = "k" > if< / span > < span class = "n" > fstype< / span > < span class = "o" > ==< / span > < span class = "s" > " btrfs" < / span > < span class = "p" > :< / span >
< span class = "n" > overhead< / span > < span class = "o" > =< / span > < span class = "mi" > 64< / span > < span class = "o" > *< / span > < span class = "mi" > 1024< / span > < span class = "c" > # don' t worry, it' s all sparse< / span >
< span class = "k" > if< / span > < span class = "n" > fstype< / span > < span class = "o" > ==< / span > < span class = "s" > " hfsplus" < / span > < span class = "p" > :< / span >
< span class = "n" > overhead< / span > < span class = "o" > =< / span > < span class = "mi" > 200< / span > < span class = "c" > # hack to deal with two bootloader copies< / span >
< span class = "k" > if< / span > < span class = "n" > fstype< / span > < span class = "ow" > in< / span > < span class = "p" > (< / span > < span class = "s" > " vfat" < / span > < span class = "p" > ,< / span > < span class = "s" > " msdos" < / span > < span class = "p" > ):< / span >
< span class = "n" > blocksize< / span > < span class = "o" > =< / span > < span class = "mi" > 2048< / span >
< span class = "n" > getsize< / span > < span class = "o" > =< / span > < span class = "k" > lambda< / span > < span class = "n" > f< / span > < span class = "p" > :< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > stat< / span > < span class = "p" > (< / span > < span class = "n" > f< / span > < span class = "p" > )< / span > < span class = "o" > .< / span > < span class = "n" > st_size< / span > < span class = "c" > # no symlinks, count as copies< / span >
< span class = "n" > total< / span > < span class = "o" > =< / span > < span class = "n" > overhead< / span > < span class = "o" > *< / span > < span class = "n" > blocksize< / span >
< span class = "n" > dirlist< / span > < span class = "o" > =< / span > < span class = "nb" > list< / span > < span class = "p" > (< / span > < span class = "n" > graft< / span > < span class = "o" > .< / span > < span class = "n" > values< / span > < span class = "p" > ())< / span >
< span class = "k" > if< / span > < span class = "n" > rootdir< / span > < span class = "p" > :< / span >
< span class = "n" > dirlist< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > )< / span >
< span class = "k" > for< / span > < span class = "n" > root< / span > < span class = "ow" > in< / span > < span class = "n" > dirlist< / span > < span class = "p" > :< / span >
< span class = "k" > for< / span > < span class = "n" > top< / span > < span class = "p" > ,< / span > < span class = "n" > dirs< / span > < span class = "p" > ,< / span > < span class = "n" > files< / span > < span class = "ow" > in< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > walk< / span > < span class = "p" > (< / span > < span class = "n" > root< / span > < span class = "p" > ):< / span >
< span class = "k" > for< / span > < span class = "n" > f< / span > < span class = "ow" > in< / span > < span class = "n" > files< / span > < span class = "o" > +< / span > < span class = "n" > dirs< / span > < span class = "p" > :< / span >
< span class = "n" > total< / span > < span class = "o" > +=< / span > < span class = "n" > round_to_blocks< / span > < span class = "p" > (< / span > < span class = "n" > getsize< / span > < span class = "p" > (< / span > < span class = "n" > join< / span > < span class = "p" > (< / span > < span class = "n" > top< / span > < span class = "p" > ,< / span > < span class = "n" > f< / span > < span class = "p" > )),< / span > < span class = "n" > blocksize< / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "n" > fstype< / span > < span class = "o" > ==< / span > < span class = "s" > " btrfs" < / span > < span class = "p" > :< / span >
< span class = "n" > total< / span > < span class = "o" > =< / span > < span class = "nb" > max< / span > < span class = "p" > (< / span > < span class = "mi" > 256< / span > < span class = "o" > *< / span > < span class = "mi" > 1024< / span > < span class = "o" > *< / span > < span class = "mi" > 1024< / span > < span class = "p" > ,< / span > < span class = "n" > total< / span > < span class = "p" > )< / span > < span class = "c" > # btrfs minimum size: 256MB< / span >
< span class = "k" > return< / span > < span class = "n" > total< / span >
< span class = "c" > ######## Execution contexts - use with the ' with' statement ##############< / span >
< / div >
< div class = "viewcode-block" id = "LoopDev" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.LoopDev" > [docs]< / a > < span class = "k" > class< / span > < span class = "nc" > LoopDev< / span > < span class = "p" > (< / span > < span class = "nb" > object< / span > < span class = "p" > ):< / span >
< span class = "k" > def< / span > < span class = "nf" > __init__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > filename< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > loopdev< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > filename< / span > < span class = "o" > =< / span > < span class = "n" > filename< / span >
< span class = "k" > if< / span > < span class = "n" > size< / span > < span class = "p" > :< / span >
< span class = "n" > mksparse< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > filename< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > __enter__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > loopdev< / span > < span class = "o" > =< / span > < span class = "n" > loop_attach< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > filename< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > loopdev< / span >
< span class = "k" > def< / span > < span class = "nf" > __exit__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > exc_type< / span > < span class = "p" > ,< / span > < span class = "n" > exc_value< / span > < span class = "p" > ,< / span > < span class = "n" > tracebk< / span > < span class = "p" > ):< / span >
< span class = "n" > loop_detach< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > loopdev< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "DMDev" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.DMDev" > [docs]< / a > < span class = "k" > class< / span > < span class = "nc" > DMDev< / span > < span class = "p" > (< / span > < span class = "nb" > object< / span > < span class = "p" > ):< / span >
< span class = "k" > def< / span > < span class = "nf" > __init__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > ,< / span > < span class = "n" > name< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mapperdev< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span >
< span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > size< / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > name< / span > < span class = "p" > )< / span > < span class = "o" > =< / span > < span class = "p" > (< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > ,< / span > < span class = "n" > name< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > __enter__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mapperdev< / span > < span class = "o" > =< / span > < span class = "n" > dm_attach< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > size< / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > name< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mapperdev< / span >
< span class = "k" > def< / span > < span class = "nf" > __exit__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > exc_type< / span > < span class = "p" > ,< / span > < span class = "n" > exc_value< / span > < span class = "p" > ,< / span > < span class = "n" > tracebk< / span > < span class = "p" > ):< / span >
< span class = "n" > dm_detach< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mapperdev< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "Mount" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.Mount" > [docs]< / a > < span class = "k" > class< / span > < span class = "nc" > Mount< / span > < span class = "p" > (< / span > < span class = "nb" > object< / span > < span class = "p" > ):< / span >
< span class = "k" > def< / span > < span class = "nf" > __init__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "n" > opts< / span > < span class = "o" > =< / span > < span class = "s" > " " < / span > < span class = "p" > ,< / span > < span class = "n" > mnt< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > opts< / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mnt< / span > < span class = "p" > )< / span > < span class = "o" > =< / span > < span class = "p" > (< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "n" > opts< / span > < span class = "p" > ,< / span > < span class = "n" > mnt< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > __enter__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mnt< / span > < span class = "o" > =< / span > < span class = "n" > mount< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > opts< / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mnt< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mnt< / span >
< span class = "k" > def< / span > < span class = "nf" > __exit__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > exc_type< / span > < span class = "p" > ,< / span > < span class = "n" > exc_value< / span > < span class = "p" > ,< / span > < span class = "n" > tracebk< / span > < span class = "p" > ):< / span >
< span class = "n" > umount< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mnt< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "PartitionMount" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.PartitionMount" > [docs]< / a > < span class = "k" > class< / span > < span class = "nc" > PartitionMount< / span > < span class = "p" > (< / span > < span class = "nb" > object< / span > < span class = "p" > ):< / span >
< span class = "sd" > " " " Mount a partitioned image file using kpartx " " " < / span >
< span class = "k" > def< / span > < span class = "nf" > __init__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > disk_img< / span > < span class = "p" > ,< / span > < span class = "n" > mount_ok< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "sd" > " " " < / span >
< span class = "sd" > disk_img is the full path to a partitioned disk image< / span >
< span class = "sd" > mount_ok is a function that is passed the mount point and< / span >
< span class = "sd" > returns True if it should be mounted.< / span >
< span class = "sd" > " " " < / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_dev< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_size< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_dir< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > disk_img< / span > < span class = "o" > =< / span > < span class = "n" > disk_img< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_ok< / span > < span class = "o" > =< / span > < span class = "n" > mount_ok< / span >
< span class = "c" > # Default is to mount partition with /etc/passwd< / span >
< span class = "k" > if< / span > < span class = "ow" > not< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_ok< / span > < span class = "p" > :< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_ok< / span > < span class = "o" > =< / span > < span class = "k" > lambda< / span > < span class = "n" > mount_dir< / span > < span class = "p" > :< / span > < span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > isfile< / span > < span class = "p" > (< / span > < span class = "n" > mount_dir< / span > < span class = "o" > +< / span > < span class = "s" > " /etc/passwd" < / span > < span class = "p" > )< / span >
< span class = "c" > # Example kpartx output< / span >
< span class = "c" > # kpartx -p p -v -a /tmp/diskV2DiCW.im< / span >
< span class = "c" > # add map loop2p1 (253:2): 0 3481600 linear /dev/loop2 2048< / span >
< span class = "c" > # add map loop2p2 (253:3): 0 614400 linear /dev/loop2 3483648< / span >
< span class = "n" > kpartx_output< / span > < span class = "o" > =< / span > < span class = "n" > runcmd_output< / span > < span class = "p" > ([< / span > < span class = "s" > " kpartx" < / span > < span class = "p" > ,< / span > < span class = "s" > " -v" < / span > < span class = "p" > ,< / span > < span class = "s" > " -a" < / span > < span class = "p" > ,< / span > < span class = "s" > " -s" < / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > disk_img< / span > < span class = "p" > ])< / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > debug< / span > < span class = "p" > (< / span > < span class = "n" > kpartx_output< / span > < span class = "p" > )< / span >
< span class = "c" > # list of (deviceName, sizeInBytes)< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > loop_devices< / span > < span class = "o" > =< / span > < span class = "p" > []< / span >
< span class = "k" > for< / span > < span class = "n" > line< / span > < span class = "ow" > in< / span > < span class = "n" > kpartx_output< / span > < span class = "o" > .< / span > < span class = "n" > splitlines< / span > < span class = "p" > ():< / span >
< span class = "c" > # add map loop2p3 (253:4): 0 7139328 linear /dev/loop2 528384< / span >
< span class = "c" > # 3rd element is size in 512 byte blocks< / span >
< span class = "k" > if< / span > < span class = "n" > line< / span > < span class = "o" > .< / span > < span class = "n" > startswith< / span > < span class = "p" > (< / span > < span class = "s" > " add map " < / span > < span class = "p" > ):< / span >
< span class = "n" > fields< / span > < span class = "o" > =< / span > < span class = "n" > line< / span > < span class = "p" > [< / span > < span class = "mi" > 8< / span > < span class = "p" > :]< / span > < span class = "o" > .< / span > < span class = "n" > split< / span > < span class = "p" > ()< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > loop_devices< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "p" > (< / span > < span class = "n" > fields< / span > < span class = "p" > [< / span > < span class = "mi" > 0< / span > < span class = "p" > ],< / span > < span class = "nb" > int< / span > < span class = "p" > (< / span > < span class = "n" > fields< / span > < span class = "p" > [< / span > < span class = "mi" > 3< / span > < span class = "p" > ])< / span > < span class = "o" > *< / span > < span class = "mi" > 512< / span > < span class = "p" > )< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > __enter__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "c" > # Mount the device selected by mount_ok, if possible< / span >
< span class = "n" > mount_dir< / span > < span class = "o" > =< / span > < span class = "n" > tempfile< / span > < span class = "o" > .< / span > < span class = "n" > mkdtemp< / span > < span class = "p" > ()< / span >
< span class = "k" > for< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "ow" > in< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > loop_devices< / span > < span class = "p" > :< / span >
< span class = "k" > try< / span > < span class = "p" > :< / span >
< span class = "n" > mount< / span > < span class = "p" > (< / span > < span class = "s" > " /dev/mapper/" < / span > < span class = "o" > +< / span > < span class = "n" > dev< / span > < span class = "p" > ,< / span > < span class = "n" > mnt< / span > < span class = "o" > =< / span > < span class = "n" > mount_dir< / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_ok< / span > < span class = "p" > (< / span > < span class = "n" > mount_dir< / span > < span class = "p" > ):< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_dir< / span > < span class = "o" > =< / span > < span class = "n" > mount_dir< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_dev< / span > < span class = "o" > =< / span > < span class = "n" > dev< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_size< / span > < span class = "o" > =< / span > < span class = "n" > size< / span >
< span class = "k" > break< / span >
< span class = "n" > umount< / span > < span class = "p" > (< / span > < span class = "n" > mount_dir< / span > < span class = "p" > )< / span >
< span class = "k" > except< / span > < span class = "n" > CalledProcessError< / span > < span class = "p" > :< / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > debug< / span > < span class = "p" > (< / span > < span class = "n" > traceback< / span > < span class = "o" > .< / span > < span class = "n" > format_exc< / span > < span class = "p" > ())< / span >
< span class = "k" > if< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_dir< / span > < span class = "p" > :< / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > info< / span > < span class = "p" > (< / span > < span class = "s" > " Partition mounted on < / span > < span class = "si" > %s< / span > < span class = "s" > size=< / span > < span class = "si" > %s< / span > < span class = "s" > " < / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_dir< / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_size< / span > < span class = "p" > )< / span >
< span class = "k" > else< / span > < span class = "p" > :< / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > debug< / span > < span class = "p" > (< / span > < span class = "s" > " Unable to mount anything from < / span > < span class = "si" > %s< / span > < span class = "s" > " < / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > disk_img< / span > < span class = "p" > )< / span >
< span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > rmdir< / span > < span class = "p" > (< / span > < span class = "n" > mount_dir< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span >
< span class = "k" > def< / span > < span class = "nf" > __exit__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > exc_type< / span > < span class = "p" > ,< / span > < span class = "n" > exc_value< / span > < span class = "p" > ,< / span > < span class = "n" > tracebk< / span > < span class = "p" > ):< / span >
< span class = "k" > if< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_dir< / span > < span class = "p" > :< / span >
< span class = "n" > umount< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_dir< / span > < span class = "p" > )< / span >
< span class = "n" > os< / span > < span class = "o" > .< / span > < span class = "n" > rmdir< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_dir< / span > < span class = "p" > )< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > mount_dir< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span >
< span class = "n" > execWithRedirect< / span > < span class = "p" > (< / span > < span class = "s" > " kpartx" < / span > < span class = "p" > ,< / span > < span class = "p" > [< / span > < span class = "s" > " -d" < / span > < span class = "p" > ,< / span > < span class = "s" > " -s" < / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > disk_img< / span > < span class = "p" > ])< / span >
< span class = "c" > ######## Functions for making filesystem images ##########################< / span >
< / div >
< div class = "viewcode-block" id = "mkfsimage" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.mkfsimage" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > mkfsimage< / span > < span class = "p" > (< / span > < span class = "n" > fstype< / span > < span class = "p" > ,< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ,< / span > < span class = "n" > mkfsargs< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ,< / span > < span class = "n" > mountargs< / span > < span class = "o" > =< / span > < span class = "s" > " " < / span > < span class = "p" > ,< / span > < span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "sd" > ' ' ' Generic filesystem image creation function.< / span >
< span class = "sd" > fstype should be a filesystem type - " mkfs.${fstype}" must exist.< / span >
< span class = "sd" > graft should be a dict: {" some/path/in/image" : " local/file/or/dir" };< / span >
< span class = "sd" > if the path ends with a ' /' it' s assumed to be a directory.< / span >
< span class = "sd" > Will raise CalledProcessError if something goes wrong.' ' ' < / span >
< span class = "n" > mkfsargs< / span > < span class = "o" > =< / span > < span class = "n" > mkfsargs< / span > < span class = "ow" > or< / span > < span class = "p" > []< / span >
< span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "n" > graft< / span > < span class = "ow" > or< / span > < span class = "p" > {}< / span >
< span class = "n" > preserve< / span > < span class = "o" > =< / span > < span class = "p" > (< / span > < span class = "n" > fstype< / span > < span class = "ow" > not< / span > < span class = "ow" > in< / span > < span class = "p" > (< / span > < span class = "s" > " msdos" < / span > < span class = "p" > ,< / span > < span class = "s" > " vfat" < / span > < span class = "p" > ))< / span >
< span class = "k" > if< / span > < span class = "ow" > not< / span > < span class = "n" > size< / span > < span class = "p" > :< / span >
< span class = "n" > size< / span > < span class = "o" > =< / span > < span class = "n" > estimate_size< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > graft< / span > < span class = "p" > ,< / span > < span class = "n" > fstype< / span > < span class = "p" > )< / span >
< span class = "k" > with< / span > < span class = "n" > LoopDev< / span > < span class = "p" > (< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > )< / span > < span class = "k" > as< / span > < span class = "n" > loopdev< / span > < span class = "p" > :< / span >
< span class = "k" > try< / span > < span class = "p" > :< / span >
< span class = "n" > runcmd< / span > < span class = "p" > ([< / span > < span class = "s" > " mkfs.< / span > < span class = "si" > %s< / span > < span class = "s" > " < / span > < span class = "o" > %< / span > < span class = "n" > fstype< / span > < span class = "p" > ]< / span > < span class = "o" > +< / span > < span class = "n" > mkfsargs< / span > < span class = "o" > +< / span > < span class = "p" > [< / span > < span class = "n" > loopdev< / span > < span class = "p" > ])< / span >
< span class = "k" > except< / span > < span class = "n" > CalledProcessError< / span > < span class = "k" > as< / span > < span class = "n" > e< / span > < span class = "p" > :< / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > error< / span > < span class = "p" > (< / span > < span class = "s" > " mkfs exited with a non-zero return code: < / span > < span class = "si" > %d< / span > < span class = "s" > " < / span > < span class = "p" > ,< / span > < span class = "n" > e< / span > < span class = "o" > .< / span > < span class = "n" > returncode< / span > < span class = "p" > )< / span >
< span class = "n" > logger< / span > < span class = "o" > .< / span > < span class = "n" > error< / span > < span class = "p" > (< / span > < span class = "n" > e< / span > < span class = "o" > .< / span > < span class = "n" > output< / span > < span class = "p" > )< / span >
< span class = "n" > sys< / span > < span class = "o" > .< / span > < span class = "n" > exit< / span > < span class = "p" > (< / span > < span class = "n" > e< / span > < span class = "o" > .< / span > < span class = "n" > returncode< / span > < span class = "p" > )< / span >
< span class = "k" > with< / span > < span class = "n" > Mount< / span > < span class = "p" > (< / span > < span class = "n" > loopdev< / span > < span class = "p" > ,< / span > < span class = "n" > mountargs< / span > < span class = "p" > )< / span > < span class = "k" > as< / span > < span class = "n" > mnt< / span > < span class = "p" > :< / span >
< span class = "k" > if< / span > < span class = "n" > rootdir< / span > < span class = "p" > :< / span >
< span class = "n" > copytree< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > mnt< / span > < span class = "p" > ,< / span > < span class = "n" > preserve< / span > < span class = "p" > )< / span >
< span class = "n" > do_grafts< / span > < span class = "p" > (< / span > < span class = "n" > graft< / span > < span class = "p" > ,< / span > < span class = "n" > mnt< / span > < span class = "p" > ,< / span > < span class = "n" > preserve< / span > < span class = "p" > )< / span >
< span class = "c" > # Make absolutely sure that the data has been written< / span >
< span class = "n" > runcmd< / span > < span class = "p" > ([< / span > < span class = "s" > " sync" < / span > < span class = "p" > ])< / span >
< span class = "c" > # convenience functions with useful defaults< / span > < / div >
< div class = "viewcode-block" id = "mkdosimg" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.mkdosimg" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > mkdosimg< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ,< / span > < span class = "n" > label< / span > < span class = "o" > =< / span > < span class = "s" > " " < / span > < span class = "p" > ,< / span > < span class = "n" > mountargs< / span > < span class = "o" > =< / span > < span class = "s" > " shortname=winnt,umask=0077" < / span > < span class = "p" > ,< / span > < span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "n" > graft< / span > < span class = "ow" > or< / span > < span class = "p" > {}< / span >
< span class = "n" > mkfsimage< / span > < span class = "p" > (< / span > < span class = "s" > " msdos" < / span > < span class = "p" > ,< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > ,< / span > < span class = "n" > mountargs< / span > < span class = "o" > =< / span > < span class = "n" > mountargs< / span > < span class = "p" > ,< / span >
< span class = "n" > mkfsargs< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s" > " -n" < / span > < span class = "p" > ,< / span > < span class = "n" > label< / span > < span class = "p" > ],< / span > < span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "n" > graft< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "mkext4img" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.mkext4img" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > mkext4img< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ,< / span > < span class = "n" > label< / span > < span class = "o" > =< / span > < span class = "s" > " " < / span > < span class = "p" > ,< / span > < span class = "n" > mountargs< / span > < span class = "o" > =< / span > < span class = "s" > " " < / span > < span class = "p" > ,< / span > < span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "n" > graft< / span > < span class = "ow" > or< / span > < span class = "p" > {}< / span >
< span class = "n" > mkfsimage< / span > < span class = "p" > (< / span > < span class = "s" > " ext4" < / span > < span class = "p" > ,< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > ,< / span > < span class = "n" > mountargs< / span > < span class = "o" > =< / span > < span class = "n" > mountargs< / span > < span class = "p" > ,< / span >
< span class = "n" > mkfsargs< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s" > " -L" < / span > < span class = "p" > ,< / span > < span class = "n" > label< / span > < span class = "p" > ,< / span > < span class = "s" > " -b" < / span > < span class = "p" > ,< / span > < span class = "s" > " 1024" < / span > < span class = "p" > ,< / span > < span class = "s" > " -m" < / span > < span class = "p" > ,< / span > < span class = "s" > " 0" < / span > < span class = "p" > ],< / span > < span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "n" > graft< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "mkbtrfsimg" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.mkbtrfsimg" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > mkbtrfsimg< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ,< / span > < span class = "n" > label< / span > < span class = "o" > =< / span > < span class = "s" > " " < / span > < span class = "p" > ,< / span > < span class = "n" > mountargs< / span > < span class = "o" > =< / span > < span class = "s" > " " < / span > < span class = "p" > ,< / span > < span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "n" > graft< / span > < span class = "ow" > or< / span > < span class = "p" > {}< / span >
< span class = "n" > mkfsimage< / span > < span class = "p" > (< / span > < span class = "s" > " btrfs" < / span > < span class = "p" > ,< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > ,< / span > < span class = "n" > mountargs< / span > < span class = "o" > =< / span > < span class = "n" > mountargs< / span > < span class = "p" > ,< / span >
< span class = "n" > mkfsargs< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s" > " -L" < / span > < span class = "p" > ,< / span > < span class = "n" > label< / span > < span class = "p" > ],< / span > < span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "n" > graft< / span > < span class = "p" > )< / span >
< / div >
< div class = "viewcode-block" id = "mkhfsimg" > < a class = "viewcode-back" href = "../../pylorax.html#pylorax.imgutils.mkhfsimg" > [docs]< / a > < span class = "k" > def< / span > < span class = "nf" > mkhfsimg< / span > < span class = "p" > (< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ,< / span > < span class = "n" > label< / span > < span class = "o" > =< / span > < span class = "s" > " " < / span > < span class = "p" > ,< / span > < span class = "n" > mountargs< / span > < span class = "o" > =< / span > < span class = "s" > " " < / span > < span class = "p" > ,< / span > < span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "bp" > None< / span > < span class = "p" > ):< / span >
< span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "n" > graft< / span > < span class = "ow" > or< / span > < span class = "p" > {}< / span >
< span class = "n" > mkfsimage< / span > < span class = "p" > (< / span > < span class = "s" > " hfsplus" < / span > < span class = "p" > ,< / span > < span class = "n" > rootdir< / span > < span class = "p" > ,< / span > < span class = "n" > outfile< / span > < span class = "p" > ,< / span > < span class = "n" > size< / span > < span class = "p" > ,< / span > < span class = "n" > mountargs< / span > < span class = "o" > =< / span > < span class = "n" > mountargs< / span > < span class = "p" > ,< / span >
< span class = "n" > mkfsargs< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "s" > " -v" < / span > < span class = "p" > ,< / span > < span class = "n" > label< / span > < span class = "p" > ],< / span > < span class = "n" > graft< / span > < span class = "o" > =< / span > < span class = "n" > graft< / span > < span class = "p" > )< / span > < / div >
< / pre > < / div >
< / div >
< footer >
< hr / >
< div role = "contentinfo" >
< p >
© Copyright 2015, Red Hat, Inc..
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Built with < a href = "http://sphinx-doc.org/" > Sphinx< / a > using a < a href = "https://github.com/snide/sphinx_rtd_theme" > theme< / a > provided by < a href = "https://readthedocs.org" > Read the Docs< / a > .
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