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* discover: Change parsers to explicitly request configuration filesNeelesh Gupta2013-11-061-68/+15
| | | | | | | | | | | | | | | | | | | 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>
* logging: Clean up debug logsJeremy Kerr2013-11-011-2/+2
| | | | | | | 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>
* discover/parser: free parsers on exitJeremy Kerr2013-10-211-1/+12
| | | | | | Allocate parsers against a context, and free that context on exit. Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
* discover: remove register_parser printfJeremy Kerr2013-10-091-2/+0
| | | | Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
* discover: Add device_{request,release}_writeJeremy Kerr2013-10-011-0/+29
| | | | | | | | 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>
* discover: Add parser_request_fileJeremy Kerr2013-10-011-2/+24
| | | | | | Add a function to allow parsers to access files on a local device. Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
* discover: Add struct load_url_result and load_taskJeremy Kerr2013-09-261-7/+6
| | | | | | | | | | | | | | | 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>
* discover/grub2: Hook up flex/bison parser to discover serverJeremy Kerr2013-09-241-0/+2
| | | | Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
* discover: separate file-reading code into file.cJeremy Kerr2013-08-081-53/+1
| | | | | | | 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>
* parser: Use list to hold parsersGeoff Levand2013-05-171-15/+21
| | | | | | | 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>
* discover: log cleanupJeremy Kerr2013-05-161-0/+2
| | | | | | | 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>
* discover: Always add a NUL byte to config dataJeremy Kerr2013-05-151-1/+3
| | | | | | | 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>
* discover/user-event: better event debugging outputJeremy Kerr2013-05-071-1/+3
| | | | | | | | | | | | | | | 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>
* discover: Add configuration events & DHCP handlerJeremy Kerr2013-04-291-2/+47
| | | | | | | | | | 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>
* discover: Add configuration methodsJeremy Kerr2013-04-291-6/+11
| | | | | | | | | | | | 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>
* parsers: dynamically register parsersJeremy Kerr2013-04-291-13/+10
| | | | | | | | | | | | | | | 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>
* discover: Handle unresolved resourcesJeremy Kerr2013-04-291-1/+3
| | | | | | | | | | | | 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>
* discover: Change parsers to emit resources rather than filenamesJeremy Kerr2013-04-291-13/+8
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* parsers: change parser.parse to accept a bufferJeremy Kerr2013-04-291-4/+93
| | | | | | | 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>
* discover: Separate temporary and permanent device dataJeremy Kerr2013-04-161-1/+1
| | | | | | | | | | | 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>
* lib/types: Create common file for type definitionsJeremy Kerr2013-04-101-1/+1
| | | | | | | | | | | | 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>
* Add grub2 conf file parserGeoff Levand2012-03-181-3/+4
| | | | | | | | 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>
* Use static array for parsersGeoff Levand2012-03-161-21/+15
| | | | | | | | | 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>
* Iterate over all conf file parsersGeoff Levand2009-07-091-4/+4
| | | | Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
* Move log to libraryGeoff Levand2009-02-011-1/+1
| | | | | | | | | | | 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>
* Use separate section for parsers arrayJeremy Kerr2009-01-021-10/+26
| | | | | | | Instead of hardcoding the array of parsers, use the linker to do the work for us. Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
* Hook up parsers to device discoveryJeremy Kerr2009-01-021-62/+7
| | | | | | | | 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>
* Initial support for multiple UIsJeremy Kerr2008-12-151-0/+85
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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