Support compressing single files.
Modify imgutils.compress to allow the "rootdir" argument to be either a
directory or a single file to add to an archive.
(cherry picked from commit c585b91422
)
Related: rhbz#1689140
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parent
a9bb68b26f
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@ -36,8 +36,8 @@ from pylorax.executils import runcmd, runcmd_output
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######## Functions for making container images (cpio, tar, squashfs) ##########
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def compress(command, rootdir, outfile, compression="xz", compressargs=None):
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'''Make a compressed archive of the given rootdir.
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def compress(command, root, outfile, compression="xz", compressargs=None):
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'''Make a compressed archive of the given rootdir or file.
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command is a list of the archiver commands to run
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compression should be "xz", "gzip", "lzma", "bzip2", or None.
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compressargs will be used on the compression commandline.'''
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@ -60,12 +60,23 @@ def compress(command, rootdir, outfile, compression="xz", compressargs=None):
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compression = "pbzip2"
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compressargs.insert(0, "-p%d" % multiprocessing.cpu_count())
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logger.debug("find %s -print0 |%s | %s %s > %s", rootdir, " ".join(command),
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compression, " ".join(compressargs), outfile)
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find, archive, comp = None, None, None
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try:
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find = Popen(["find", ".", "-print0"], stdout=PIPE, cwd=rootdir)
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archive = Popen(command, stdin=find.stdout, stdout=PIPE, cwd=rootdir)
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if os.path.isdir(root):
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logger.debug("find %s -print0 |%s | %s %s > %s", root, " ".join(command),
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compression, " ".join(compressargs), outfile)
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find = Popen(["find", ".", "-print0"], stdout=PIPE, cwd=root)
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archive = Popen(command, stdin=find.stdout, stdout=PIPE, cwd=root)
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else:
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logger.debug("echo %s |%s | %s %s > %s", root, " ".join(command),
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compression, " ".join(compressargs), outfile)
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archive = Popen(command, stdin=PIPE, stdout=PIPE, cwd=os.path.dirname(root))
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archive.stdin.write(os.path.basename(root).encode("utf-8") + b"\0")
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archive.stdin.close()
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comp = Popen([compression] + compressargs,
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stdin=archive.stdout, stdout=open(outfile, "wb"))
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comp.wait()
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@ -76,18 +87,18 @@ def compress(command, rootdir, outfile, compression="xz", compressargs=None):
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list(p.kill() for p in (find, archive, comp) if p)
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return 1
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def mkcpio(rootdir, outfile, compression="xz", compressargs=None):
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def mkcpio(root, outfile, compression="xz", compressargs=None):
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compressargs = compressargs or ["-9"]
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return compress(["cpio", "--null", "--quiet", "-H", "newc", "-o"],
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rootdir, outfile, compression, compressargs)
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root, outfile, compression, compressargs)
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def mktar(rootdir, outfile, compression="xz", compressargs=None, selinux=True):
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def mktar(root, outfile, compression="xz", compressargs=None, selinux=True):
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compressargs = compressargs or ["-9"]
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tar_cmd = ["tar", "--no-recursion"]
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if selinux:
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tar_cmd += ["--selinux", "--acls", "--xattrs"]
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tar_cmd += ["-cf-", "--null", "-T-"]
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return compress(tar_cmd, rootdir, outfile, compression, compressargs)
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return compress(tar_cmd, root, outfile, compression, compressargs)
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def mksquashfs(rootdir, outfile, compression="default", compressargs=None):
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'''Make a squashfs image containing the given rootdir.'''
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