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Upcoming changes will need a method to parse a secondary file (to
support the 'source' command), but not execute it as a new script.
This change exposes the parsing code, separate from the execution code.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Currently, we have support for grub2 (device)/path syntax for boot
resources. This change allows this syntax for general paths in grub2
scripts (for example, -f tests).
This involves exposing grub2_lookup_device, to allow the script
execution code to resolve pathnames.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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This change incorporates the grub2-style (device)/path specifiers in the
grub2 parser's resource code. This allows the boot option paths to use
device-specific references.
Device names are looked-up using the UUID and kernel IDs, but with the
lookup logic specific to a new function (grub2_lookup_device), so that
can be extended in a future change.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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This change adds a (currently unused) function to parse (device)/path
references from grub scripts.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Currently, we have struct grub2_resource_info to keep references to boot
payloads that may be returned in boot options, and be (conditionally)
resolved by the parser.
We'd also like to use the same semantics for other file references in
the grub2 parser, for arbitrary usage in scripts - where files are
also referenced by a path and an optional device.
To do this, this change moves struct grub2_resource_info to grub2.h, and
renames to struct grub2_file. Future changes will use this for
script-internal file handling.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Brett Grandbois <brett.grandbois@opengear.com>
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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YYLEX_PARAM is removed in bison 3.0, so we need to pass the scanner
param directly through yyparse (rather than referencing
parser->scanner). Unfortunately, we don't have the lexer header
available at the time we declare yyparse, so we need to pass a void *
here.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Rather than always using the default prefix, we should determine it from
the location of the grub2 config file.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Currently, we re-use a grub2 parser for different filenames, and will
create one even if we find no matching files.
This change only creates a parser if parser_request_file succeeds, and
free() (and exits the parse) immediately after.
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 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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Allow URL-format specifiers for GRUB2 resources.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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