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https://github.com/ostreedev/ostree.git
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4e81548447
ostree-grub-generator can be used to customize the generated grub.cfg file. Compile time decision ostree-grub-generator vs grub2-mkconfig can be overwritten with the OSTREE_GRUB2_EXEC envvar - useful for auto tests and OS installers. Why this alternative approach: 1) The current approach is less flexible than using a custom 'ostree-grub-generator' script. Each system can adjust this script for its needs, instead of using the hardcoded values from ostree-bootloader-grub2.c. 2) Too much overhead on embedded to generate grub.cfg via /etc/grub.d/ configuration files. It is still possible to do so, even with this patch applied. No need to install grub2 package on a target device. 3) The grub2-mkconfig code path has other issues: https://bugzilla.gnome.org/show_bug.cgi?id=761180 Task: https://bugzilla.gnome.org/show_bug.cgi?id=762220 Closes: #228 Approved by: cgwalters
113 lines
3.7 KiB
Python
Executable File
113 lines
3.7 KiB
Python
Executable File
#!/usr/bin/python
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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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if len(sys.argv) == 1:
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sysroot = ''
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else:
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sysroot = sys.argv[1]
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bootloader = sys.argv[2]
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loaderpath = sysroot + '/boot/loader/entries'
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syslinuxpath = sysroot + '/boot/syslinux/syslinux.cfg'
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if bootloader == "grub2":
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sys.stdout.write('GRUB2 configuration validation not implemented.\n')
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sys.exit(0)
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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 compare_entries_descending(a, b):
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return int(b['version']) - int(a['version'])
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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')
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entries = []
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syslinux_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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with open(path) as f:
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entry = {}
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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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s = line.find(' ')
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assert s > 0
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k = line[0:s]
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v = line[s+1:]
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entry[k] = v
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entries.append(entry)
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entries.sort(compare_entries_descending)
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# Parse SYSLINUX config
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with open(syslinuxpath) as f:
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in_ostree_config = False
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syslinux_entry = None
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syslinux_default = None
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for line in f:
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line = line.strip()
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if line.startswith('DEFAULT '):
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if syslinux_entry is not None:
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syslinux_default = line.split(' ', 1)[1]
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elif line.startswith('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'] = line.split(' ', 1)[1]
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elif line.startswith('KERNEL '):
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syslinux_entry['linux'] = line.split(' ', 1)[1]
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elif line.startswith('INITRD '):
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syslinux_entry['initrd'] = line.split(' ', 1)[1]
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elif line.startswith('APPEND '):
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syslinux_entry['options'] = line.split(' ', 1)[1]
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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(len(entries), len(syslinux_entries)))
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def assert_matches_key(a, b, key):
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aval = a[key]
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bval = b[key]
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if aval != bval:
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fatal("Mismatch on {0}: {1} != {2}".format(key, aval, bval))
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for i,(entry,syslinuxentry) in enumerate(zip(entries, syslinux_entries)):
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assert_matches_key(entry, syslinuxentry, 'linux')
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assert_matches_key(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(entry_ostree, syslinux_ostree))
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sys.stdout.write('SYSLINUX configuration validated\n')
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sys.exit(0)
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