systm(9lua) - NetBSD Manual Pages

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SYSTM(9lua)                          LOCAL                         SYSTM(9lua)


NAME

     systm -- access to general kernel functionality from Lua


SYNOPSIS

     local systm = require 'systm'

     systm.print(msg)
     systm.print_nolog(msg)
     systm.uprint(msg)
     systm.aprint_normal(msg)
     systm.aprint_naive(msg)
     systm.aprint_verbose(msg)
     systm.aprint_debug(msg)
     systm.aprint_error(msg)
     count = systm.aprint_get_error_count()
     systm.panic(msg)


DESCRIPTION

     The systm Lua binding provides access to general kernel functionality
     like printing messages on the console.  The systm.aprint functions are
     meant to be using during kernel autoconfiguration.

     systm.print(msg)
           Send msg to the console.

     systm.print_nolog(msg)
           The systm.print_nolog() function is identical to the systm.print()
           function, except is does not send msg to the system log.

     systm.uprint(msg)
           Send msg to the current process's controlling tty.

     systm.aprint_normal(msg)
           Send msg to the console unless AB_QUIET is set.  Always sends to
           the log.

     systm.aprint_naive(msg)
           Send msg to the console only if AB_QUIET is set.  Never sends to
           the log.

     systm.aprint_verbose(msg)
           Send msg to the console only if AB_VERBOSE is set.  Always sends to
           the log.

     systm.aprint_debug(msg)
           Send msg to the console and the log only if AB_DEBUG is set.

     systm.aprint_error(msg)
           Like systm.aprint_normal(), but also keeps track of the number of
           times called.  This allows a subsystem to report the number of
           errors that occurred during a quiet or silent initialization phase.

     count = systm.aprint_get_error_count()
           The systm.aprint_get_error_count() function reports the number of
           errors and resets the counter to 0.

     systm.panic(msg)
           The systm.panic() function terminates the NetBSD system.  The mes-
           sage msg is printed to the console and saved in the variable
           panicstr for later retrieval via core dump inspection.  A newline
           character is added at the end automatically.


VARIABLES

     Upon initialisation, the systm module sets the following variables with
     the values of the corresponding kernel variable:

     systm.copyright
     systm.cpu_model
     systm.machine
     systm.machine_arch
     systm.osrelease
     systm.ostype
     systm.kernel_ident
     systm.version
     systm.ncpu


SEE ALSO

     lua(1), luac(1), lua(4), intro(9lua)


HISTORY

     An systm manual appeared in NetBSD 7.0.


AUTHORS

     The systm Lua binding was written by Marc Balmer <mbalmer@NetBSD.org>.

NetBSD 9.4                     October 29, 2013                     NetBSD 9.4