mirror of
https://github.com/ostreedev/ostree.git
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2a6c0b21db
I've made this use functions to make it easier to add support for more bootloaders. Seeing as there will be a big diff anyway I've also adjusted the formatting to make it pep8 compliant.
138 lines
4.3 KiB
Python
Executable File
138 lines
4.3 KiB
Python
Executable File
#!/usr/bin/python3
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#
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# Copyright (C) 2015 Red Hat
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library 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 GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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import os
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import sys
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def main(argv):
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_, sysroot, bootloader = argv
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if bootloader == "grub2":
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sys.stdout.write('GRUB2 configuration validation not implemented.\n')
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return 0
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else:
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return validate_syslinux(sysroot)
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def fatal(msg):
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sys.stderr.write(msg)
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sys.stderr.write('\n')
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sys.exit(1)
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def get_ostree_option(optionstring):
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for o in optionstring.split():
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if o.startswith('ostree='):
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return o[8:]
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raise ValueError('ostree= not found in %r' % (optionstring,))
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def parse_loader_configs(sysroot):
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loaderpath = sysroot + '/boot/loader/entries'
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entries = []
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# Parse loader configs
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for fname in os.listdir(loaderpath):
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path = os.path.join(loaderpath, fname)
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entry = {}
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with open(path) as f:
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for line in f:
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line = line.strip()
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if (line == '' or line.startswith('#')):
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continue
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k, v = line.split(' ', 1)
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entry[k] = v
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entries.append(entry)
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entries.sort(key=lambda e: int(e['version']), reverse=True)
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return entries
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def validate_syslinux(sysroot):
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syslinuxpath = sysroot + '/boot/syslinux/syslinux.cfg'
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entries = parse_loader_configs(sysroot)
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syslinux_entries = []
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# Parse SYSLINUX config
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with open(syslinuxpath) as f:
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syslinux_entry = None
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for line in f:
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try:
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k, v = line.strip().split(" ", 1)
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except ValueError:
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continue
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if k == 'DEFAULT':
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if syslinux_entry is not None:
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syslinux_default = v
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elif k == 'LABEL':
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if syslinux_entry is not None:
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syslinux_entries.append(syslinux_entry)
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syslinux_entry = {}
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syslinux_entry['title'] = v
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elif k == 'KERNEL':
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syslinux_entry['linux'] = v
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elif k == 'INITRD':
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syslinux_entry['initrd'] = v
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elif k == 'APPEND':
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syslinux_entry['options'] = v
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if syslinux_entry is not None:
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syslinux_entries.append(syslinux_entry)
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if len(entries) != len(syslinux_entries):
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fatal("Found {0} loader entries, but {1} SYSLINUX entries\n".format(
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len(entries), len(syslinux_entries)))
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def assert_key_same_file(a, b, key):
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aval = a[key]
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bval = b[key]
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sys.stderr.write("aval: %r\nbval: %r\n" % (aval, bval))
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# Paths in entries are always relative to /boot
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entry = os.stat(sysroot + "/boot" + aval)
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# Syslinux entries can be relative to /boot (if it's on another filesystem)
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# or relative to / if /boot is on /.
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s1 = os.stat(sysroot + bval)
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s2 = os.stat(sysroot + "/boot" + bval)
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# A symlink ensures that no matter what they point at the same file
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assert_eq(entry, s1)
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assert_eq(entry, s2)
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for i, (entry, syslinuxentry) in enumerate(zip(entries, syslinux_entries)):
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assert_key_same_file(entry, syslinuxentry, 'linux')
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assert_key_same_file(entry, syslinuxentry, 'initrd')
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entry_ostree = get_ostree_option(entry['options'])
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syslinux_ostree = get_ostree_option(syslinuxentry['options'])
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if entry_ostree != syslinux_ostree:
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fatal("Mismatch on ostree option: {0} != {1}".format(
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entry_ostree, syslinux_ostree))
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sys.stdout.write('SYSLINUX configuration validated\n')
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return 0
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def assert_eq(a, b):
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assert a == b, "%r == %r" % (a, b)
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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