67 lines
2.8 KiB
Plaintext
67 lines
2.8 KiB
Plaintext
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#!/usr/bin/python
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# mkefiboot - a tool to make EFI boot images
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# Copyright (C) 2011 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Red Hat Author(s): Will Woods <wwoods@redhat.com>
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import os, tempfile, optparse
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from subprocess import check_call, PIPE
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from lorax.imgutils import mkdosimg, round_to_blocks, LoopDev, DMDev, dm_detach
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def mkefiboot(bootdir, outfile, label):
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'''Make an EFI boot image with the contents of bootdir in EFI/BOOT'''
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mkdosimg(None, outfile, label, graft={'EFI/BOOT':bootdir})
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def mkefidisk(efiboot, outfile):
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'''Make a bootable EFI disk image out of the given EFI boot image.'''
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partsize = os.path.getsize(efiboot) + 17408
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disksize = round_to_blocks(17408 + partsize, 512)
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with LoopDev(outfile, disksize) as loopdev:
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with DMDev(loopdev, disksize) as dmdev:
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check_call(["parted", "--script", "/dev/mapper/%s" % dmdev,
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"mklabel", "gpt",
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"unit", "b",
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"mkpart", "'EFI System Partition'", "fat32", "17408", str(partsize),
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"set", "1", "boot", "on"], stdout=PIPE, stderr=PIPE)
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with open(efiboot, "rb") as infile:
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with open("/dev/mapper/%sp1" % dmdev, "wb") as outfile:
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outfile.write(infile.read())
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dm_detach(dmdev+"p1")
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if __name__ == '__main__':
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parser = optparse.OptionParser(usage="%prog EFIBOOTDIR IMGFILE")
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parser.add_option("-d", "--disk", action="store_true", default=False,
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help="make a full EFI disk image")
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parser.add_option("-l", "--label", action="store", default="ANACONDA",
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help="filesystem label to use")
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# get args
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(opt, args) = parser.parse_args()
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if len(args) != 2:
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parser.error("need exactly two arguments")
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(bootdir, outfile) = args
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# sanity checks
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if not os.path.isdir(bootdir):
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parser.error("%s is not a directory" % bootdir)
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if os.getuid() > 0:
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parser.error("need root permissions")
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# do the thing!
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if opt.disk:
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efiboot = tempfile.NamedTemporaryFile(prefix="mkefiboot.").name
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mkefiboot(bootdir, efiboot, opt.label)
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mkefidisk(efiboot, outfile)
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else:
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mkefiboot(bootdir, outfile, opt.label)
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