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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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This change adds a function to the parser API:
int parser_check_dir(struct discover_context *ctx,
struct discover_device *dev, const char *dirname)
- which allows parsers to check for the presence of a directory (path of
'dirname') on the device ('dev'). We use this in the GRUB2 parser to
implement the `test -d` check.
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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We have quite a few pb_logs which should be pb_debug. This change moves
developer-specific info to pb_debug.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Allocate parsers against a context, and free that context on exit.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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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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Add a function to allow parsers to access files on a local device.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Currently, load_url and load_url_async return a filename parameter and a
tempfile flag (indicating whether the file needs to be cleaned after
use).
Instead, encapsulate this data in a struct load_url_result, which the
caller (and async callbacks) can read the status, filename and clean
parameters.
For internal use in load_url and helpers, we add a struct load_task to
hold a pointer to the load_url_result and async data.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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We'll need to read files in the network config code, so add a 'file'
object, containing the read_file function.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Now that we dynamically add parsers, we can use a list to
hold them. Also simplifies the test_run_parser() routine.
Signed-off-by: Geoff Levand <geoff@infradead.org>
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Remove some of the more noisy log messages, and add some information
pertinent to device resolution events.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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conf_get_pair will read one-byte past the end of the conf buffer, so
always NUL-terminate.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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We don't currently handle conf events very well:
user_event remove event:
device: /net/eth0
name => (null)
image => (null)
args => (null)
This change prints the event action properly, and prints all event
params.
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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Currently, we require all parsers to be defined in an array in
parsers.c.
This change removes this requirement, by introducting a
register_parser() macro, which adds a constructor to register the parser
with the core parser infrastructure.
Because each parser no longer resolves an undefined symbol, we need to
use a `ld -r` object for libparser, instead of using libtool, which
creates a .a (and hence has no parsers included).
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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Rather than having each of the parsers do their own open(), read(), etc,
use the registered filenames array to find & open parser conf files.
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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The device and boot_option types are defined in pb-protocol.h, but
aren't really specific to the procotol. This means a lot of
non-messaging-related files are #including the protocol definitions
unnecessarily.
This change separates the types out into lib/types/types.h.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Geoff Levand <geoff@infradead.org>
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Add grub2 parser and sample config file.
Reorder parser priorities:
From (yaboot -> kboot) to (kboot -> grub2 -> yaboot).
Signed-off-by: Geoff Levand <geoff@infradead.org>
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Change the parser structure array implementation from using an
array in a seperate parsers section to a static array of pointers
in parser.c. Parser priority is now set by the position in the
new parsers array.
Signed-off-by: Geoff Levand <geoff@infradead.org>
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Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
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Move the log routines to the petitboot library. The log
routines are generic enough to be used for both server and
client. Does not change the log source.
jk: move to lib/log/ instead of lib/
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Instead of hardcoding the array of parsers, use the linker to do the
work for us.
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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Move the device discovery code from separate udev helpers to a single
process to listen on two sockets: one SOCK_DGRAM for incoming udev
events, and one SOCK_STREAM for UIs to connect.
Initial support for client/server infrastructure, still need to wire-up
the udev messages.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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