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import cinit from unix.schottelius.org

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Signed-off-by: Nico Schottelius <nico@ikn.schottelius.org>
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Nico Schottelius 2009-09-16 12:53:45 +02:00
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software/cinit/browse_source/cinit-0.1/doc/extern/linux.kernel.eats.arguments vendored Normal file
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Linux, the kernel, eats arguments
Nico Schottelius 2005-06-17 (Last Modified: 2005-06-17)
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If you specify
variable=value
to the Linux kernel, the argument will NOT be passed to cinit.
Here's the relevant code block from init/main.c of the Linux kernel:
-------------------------------------------------------------------------------
From init(void * unused) the function run_init_process(char *init_filename)
is called, which passes argv_init (char * argv_init[MAX_INIT_ARGS+2]) to init.
First init_setup(char *str) resets all elements of the argv_init to NULL.
The function unknown_bootoption(char *param, char *val) fills the
argv_init array, but only with parameters, which have no value
(val).
The function parse_args calls unknown_bootoption with the unknown options.
-------------------------------------------------------------------------------
This way the profile support in all cinit versions below cinit-0.1 will
only work if you change conf/profile, because "cprofile=value" will
not be given to cinit, because it's not treated as a command line option.
The original value "cprofile=" is replaced by "cprofile:" as of cinit-0.1.