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When the client sends us a PB_PROTOCOL_ACTION_CONFIG message, we want to
update the current config.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Add a new function parser_request_url() to read the data from
configuration files present remotely. We deprecate
iterate_parser_files() and download_config() functions along with the
'filenames' and 'method' members of the 'parser' structure so that
individual parsers would now require to request the configuration files
data from the parser code and doesn't necessarily export the list of
configuration files.
Add the support to handle incoming DHCP event, done by passing all the
relevant environment variables of the udhcpc to the discover code.
Also, update the pxe parser code to populate the list of configuration
file names as per PXELINUX convention of fallback names using mac and ip
addresses of the booting machine.
Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Add a pair of functions to the parser API to allow write access to the
underlying device. We'll use this in the GRUB2 parser to implement
environment persistence.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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We have parsers passing discover_contexts around, which we want to hook
into the test framework. Add a void * member, which the test code can
use to reference the test.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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When we start the discover server, we may find that devices are already
mounted. In this case, mount_device will fail, and we'll abort the
parse.
This change uses /proc/self/mounts to check if new devices are already
mounted, and uses the existing mount point.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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If we have multipath devices present in the system, we'll end up with
duplicate mounts, parse results and boot options. This change adds a
check to see if we've encountered a device with this serial number
previously.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Currently, we pass "events" between the udev, user-event and
device-handler layers. These events all get sent through
device_handler_event, then de-multiplexed to an appropriate handler,
depending on their source.
Instead, just export relevant device_handler functions, and have the
(old) event sources call these functions directly.
This also means we can include a lot more of the device hander code in
the parser tests.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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This change cleans up our usage of device path, names and IDs.
Device ID is the kernel name for the device. We also expose this through
lookup_by_name.
Device path is the path to the dev node (ie, always starts with /dev/),
and is only used for mounting.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Updates & fixes by Jeremy Kerr <jk@ozlabs.org>.
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Allow the default boot process to be cancelled, via a message with
action PB_PROTOCOL_ACTION_CANCEL_DEFAULT.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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When we see a boot option with is_default set, store it in the handler
and register a timeout waiter.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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This change adds a new event type, EVENT_ACTION_CONF. These events
supply a new configuration URL that petitiboot should download and
parse.
With this in place, we can receive DHCP configuration events.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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We'd like to be able to download petitboot configurations from other
sources (not just local files), but we'll need some way to indicate to
the parsers that a chunk of config data is from a specific source.
This change adds "configuration methods". At present, we have only one:
CONF_METHOD_LOCAL_FILE. For any incoming configuration data, we only run
parsers that have registered themselves with that configuration method.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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This change adds an unresolved resource queue - any unresolved resources
discovered by parsers are added to this queue rather than being reported
to the clients.
When we discover a new device, we try to resolve any resources in the
queue against the new device. If resolution succeeds, we can send the
option to clients.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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This change switches the parsers over to populate the resources in
discover_boot_option, rather than the string parameters in boot_option.
To do this, we need a few things:
* Add struct resources to discover_boot_option for the boot_image,
initrd and icon data.
* Have the parsers populate the resources, rather than the strings.
Currently, parsers can all use the devpath resource type.
* Add a resolve_resource callback to parsers; this is how the device
handler will attempt to resolve resources.
* Change load_file to load_url, as we should be only accessing
(resolved) resources by URLs.
This then allows us to remove the mount map, and associated lookup code,
as well as the UUID and label links to devices.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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This change introduces a new type, struct discover_boot_option. Like
struct discover_device adds discover-specific data to struct device,
struct discover_boot_option allows the discover server to store more
than just the boot option strings for a boot option.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Add a few functions to find devices by various attributes:
* device_lookup_by_name
* device_lookup_by_path
* device_lookup_by_uuid
* device_lookup_by_label
* device_lookup_by_id
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Rather than depending on the event (which is only available during
inital discovery) for UUID and label parameters, this change adds uuid
and label members to struct discover_device.
This means that the label and UUID are available during the device's
lifetime, not just during initial discovery. We can also just pass the
device to some of the device handling code, rather than the discover
context.
Also, fix an issue where we don't use the raw label/uuid (instead of the
encoded one) in setup_device_links.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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At present, we keep both permanent (eg links/n_links) and temporary
(event) data in struct discover_context.
This change makes discover_context a temporary structure, just used
during actual device discovery. Once discovery is complete, the
permanent data (discover_device) is "committed" to the device handler.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Now that the server does the booting, we should move the --dry-run
argument to the server.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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This change adds a funtion, device_handler_boot, which processes the
boot command message from the discover server.
We add a new file, discover/boot.c (and a corresponding header) with a
skeleton for the final kexec code.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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The struct udev_event can be used as a generic event, so rename it
struct event and move it from udev.h into a new file event.h.
Also, rename the emums UDEV_ACTION_ADD and UDEV_ACTION_REMOVE
to ACTION_UDEV_ADD and ACTION_UDEV_REMOVE.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Fillout the missing discover code that reports current devices.
Replaces device_handler_get_current_devices() with two new
accessor routines device_handler_get_device_count() and
device_handler_get_device().
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Make the instance of devices read-only.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Iterate the parsers from the device handler on an add event.
Initial change to just the kboot parser.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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