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9e1c23f3f4
Detect first boot based on the existence of a coreos/first_boot file in the EFI partition, and set "coreos.first_boot=detected" command line argument when found. We use "detected" rather than "1" so the initramfs knows that it should mount the ESP and delete the file. This lets us defer clearing the first-boot flag until Ignition has run successfully, without having to change the disk GUID after filesystems are mounted. Continue detecting the first-boot disk GUID and adding the command-line argument to randomize it, since we still want unique disk GUIDs regardless of Ignition.
58 lines
3.5 KiB
Python
Executable File
58 lines
3.5 KiB
Python
Executable File
#!/usr/bin/python
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import hashlib
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import json
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import os
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import string
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import subprocess
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import sys
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filename = sys.argv[1]
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grubdir = sys.argv[2]
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outputdir = sys.argv[3]
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version = sys.argv[4]
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bootoffset = string.atoi(subprocess.check_output(['cgpt', 'show', '-i', '2', '-b', filename])) * 512
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with open(filename, "rb") as f:
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boot = f.read(440)
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f.seek(bootoffset)
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diskboot = f.read(512)
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corelen = bytearray(diskboot)[508] | bytearray(diskboot)[509] << 8
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f.seek(bootoffset+512)
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core = f.read(corelen * 512)
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hashes = {"4": {"binaryvalues": [{"values": [{"value": hashlib.sha1(boot).hexdigest(), "description": "CoreOS Grub boot.img %s" % version}]}]},
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"8": {"binaryvalues" : [{"values": [{"value": hashlib.sha1(diskboot).hexdigest(), "description": "CoreOS Grub diskboot.img %s" % version}]}]},
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"9": {"binaryvalues": [{"values": [{"value": hashlib.sha1(core).hexdigest(), "description": "CoreOS Grub core.img %s" % version}]}]}}
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with open(os.path.join(outputdir, "grub_loader.config"), "w") as f:
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f.write(json.dumps(hashes, sort_keys=True))
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hashvalues = []
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for folder, subs, files in os.walk(grubdir):
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for filename in files:
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if filename.endswith(".mod"):
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with open(os.path.join(folder, filename), "rb") as f:
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mod = f.read()
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value = hashlib.sha1(mod).hexdigest()
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description = "CoreOS Grub %s %s" % (filename, version)
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hashvalues.append({"value": value, "description": description})
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with open(os.path.join(outputdir, "grub_modules.config"), "w") as f:
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f.write(json.dumps({"9": {"binaryvalues": [{"prefix": "grub_module", "values": hashvalues}]}}))
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with open(os.path.join(outputdir, "kernel_cmdline.config"), "w") as f:
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f.write(json.dumps({"8": {"asciivalues": [{"prefix": "grub_kernel_cmdline", "values": [{"value": "rootflags=rw mount.usrflags=ro BOOT_IMAGE=/coreos/vmlinuz-[ab] mount.usr=PARTUUID=\S{36} rootflags=rw mount.usrflags=ro consoleblank=0 root=LABEL=ROOT (console=\S+)? (coreos.autologin=\S+)? verity.usrhash=\\S{64}", "description": "CoreOS kernel command line %s" % version}]}]}}))
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commands = [{"value": '\[.*\]', "description": "CoreOS Grub configuration %s" % version},
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{"value": 'gptprio.next -d usr -u usr_uuid', "description": "CoreOS Grub configuration %s" % version},
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{"value": 'insmod all_video', "description": "CoreOS Grub configuration %s" % version},
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{"value": 'linux /coreos/vmlinuz-[ab] rootflags=rw mount.usrflags=ro consoleblank=0 root=LABEL=ROOT (console=\S+)? (coreos.autologin=\S+)?', "description": "CoreOS Grub configuration %s" % version},
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{"value": 'menuentry CoreOS \S+ --id=coreos\S* {', "description": "CoreOS Grub configuration %s" % version},
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{"value": 'search --no-floppy --set randomize_disk_guid --disk-uuid 00000000-0000-0000-0000-000000000001', "description": "CoreOS Grub configuration %s" % version},
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{"value": 'search --no-floppy --set oem --part-label OEM --hint hd0,gpt1', "description": "CoreOS Grub configuration %s" % version},
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{"value": 'set .+', "description": "CoreOS Grub configuration %s" % version},
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{"value": 'setparams CoreOS default', "description": "CoreOS Grub configuration %s" % version},
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{"value": 'source (hd0,gpt6)/grub.cfg', "description": "CoreOS Grub configuration %s" % version}]
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with open(os.path.join(outputdir, "grub_commands.config"), "w") as f:
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f.write(json.dumps({"8": {"asciivalues": [{"prefix": "grub_cmd", "values": commands}]}}))
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