1335d5d700
instance numbers, encoded and decoded using macros in <minix/endpoint.h>.
proc number -> endpoint migration
. proc_nr in the interrupt hook is now an endpoint, proc_nr_e.
. m_source for messages and notifies is now an endpoint, instead of
proc number.
. isokendpt() converts an endpoint to a process number, returns
success (but fails if the process number is out of range, the
process slot is not a living process, or the given endpoint
number does not match the endpoint number in the process slot,
indicating an old process).
. okendpt() is the same as isokendpt(), but panic()s if the conversion
fails. This is mainly used for decoding message.m_source endpoints,
and other endpoint numbers in kernel data structures, which should
always be correct.
. if DEBUG_ENABLE_IPC_WARNINGS is enabled, isokendpt() and okendpt()
get passed the __FILE__ and __LINE__ of the calling lines, and
print messages about what is wrong with the endpoint number
(out of range proc, empty proc, or inconsistent endpoint number),
with the caller, making finding where the conversion failed easy
without having to include code for every call to print where things
went wrong. Sometimes this is harmless (wrong arg to a kernel call),
sometimes it's a fatal internal inconsistency (bogus m_source).
. some process table fields have been appended an _e to indicate it's
become and endpoint.
. process endpoint is stored in p_endpoint, without generation number.
it turns out the kernel never needs the generation number, except
when fork()ing, so it's decoded then.
. kernel calls all take endpoints as arguments, not proc numbers.
the one exception is sys_fork(), which needs to know in which slot
to put the child.
180 lines
4.9 KiB
C
180 lines
4.9 KiB
C
/* Function prototypes for the system library. The prototypes in this file
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* are undefined to do_unused if the kernel call is not enabled in config.h.
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* The implementation is contained in src/kernel/system/.
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*
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* The system library allows to access system services by doing a kernel call.
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* System calls are transformed into request messages to the SYS task that is
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* responsible for handling the call. By convention, sys_call() is transformed
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* into a message with type SYS_CALL that is handled in a function do_call().
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*
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* Changes:
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* Jul 30, 2005 created SYS_INT86 to support BIOS driver (Philip Homburg)
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* Jul 13, 2005 created SYS_PRIVCTL to manage services (Jorrit N. Herder)
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* Jul 09, 2005 updated SYS_KILL to signal services (Jorrit N. Herder)
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* Jun 21, 2005 created SYS_NICE for nice(2) kernel call (Ben J. Gras)
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* Jun 21, 2005 created SYS_MEMSET to speed up exec(2) (Ben J. Gras)
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* Apr 12, 2005 updated SYS_VCOPY for virtual_copy() (Jorrit N. Herder)
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* Jan 20, 2005 updated SYS_COPY for virtual_copy() (Jorrit N. Herder)
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* Oct 24, 2004 created SYS_GETKSIG to support PM (Jorrit N. Herder)
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* Oct 10, 2004 created handler for unused calls (Jorrit N. Herder)
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* Sep 09, 2004 updated SYS_EXIT to let services exit (Jorrit N. Herder)
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* Aug 25, 2004 rewrote SYS_SETALARM to clean up code (Jorrit N. Herder)
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* Jul 13, 2004 created SYS_SEGCTL to support drivers (Jorrit N. Herder)
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* May 24, 2004 created SYS_SDEVIO to support drivers (Jorrit N. Herder)
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* May 24, 2004 created SYS_GETINFO to retrieve info (Jorrit N. Herder)
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* Apr 18, 2004 created SYS_VDEVIO to support drivers (Jorrit N. Herder)
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* Feb 24, 2004 created SYS_IRQCTL to support drivers (Jorrit N. Herder)
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* Feb 02, 2004 created SYS_DEVIO to support drivers (Jorrit N. Herder)
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*/
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#ifndef SYSTEM_H
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#define SYSTEM_H
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/* Common includes for the system library. */
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#include "debug.h"
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#include "kernel.h"
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#include "proto.h"
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#include "proc.h"
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/* Default handler for unused kernel calls. */
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_PROTOTYPE( int do_unused, (message *m_ptr) );
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_PROTOTYPE( int do_exec, (message *m_ptr) );
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#if ! USE_EXEC
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#define do_exec do_unused
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#endif
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_PROTOTYPE( int do_fork, (message *m_ptr) );
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#if ! USE_FORK
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#define do_fork do_unused
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#endif
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_PROTOTYPE( int do_newmap, (message *m_ptr) );
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#if ! USE_NEWMAP
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#define do_newmap do_unused
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#endif
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_PROTOTYPE( int do_exit, (message *m_ptr) );
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#if ! USE_EXIT
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#define do_exit do_unused
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#endif
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_PROTOTYPE( int do_trace, (message *m_ptr) );
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#if ! USE_TRACE
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#define do_trace do_unused
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#endif
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_PROTOTYPE( int do_nice, (message *m_ptr) );
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#if ! USE_NICE
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#define do_nice do_unused
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#endif
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_PROTOTYPE( int do_copy, (message *m_ptr) );
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#define do_vircopy do_copy
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#define do_physcopy do_copy
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#if ! (USE_VIRCOPY || USE_PHYSCOPY)
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#define do_copy do_unused
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#endif
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_PROTOTYPE( int do_vcopy, (message *m_ptr) );
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#define do_virvcopy do_vcopy
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#define do_physvcopy do_vcopy
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#if ! (USE_VIRVCOPY || USE_PHYSVCOPY)
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#define do_vcopy do_unused
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#endif
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_PROTOTYPE( int do_umap, (message *m_ptr) );
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#if ! USE_UMAP
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#define do_umap do_unused
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#endif
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_PROTOTYPE( int do_memset, (message *m_ptr) );
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#if ! USE_MEMSET
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#define do_memset do_unused
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#endif
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_PROTOTYPE( int do_vm_setbuf, (message *m_ptr) );
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_PROTOTYPE( int do_vm_map, (message *m_ptr) );
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_PROTOTYPE( int do_abort, (message *m_ptr) );
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#if ! USE_ABORT
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#define do_abort do_unused
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#endif
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_PROTOTYPE( int do_getinfo, (message *m_ptr) );
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#if ! USE_GETINFO
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#define do_getinfo do_unused
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#endif
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_PROTOTYPE( int do_privctl, (message *m_ptr) );
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#if ! USE_PRIVCTL
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#define do_privctl do_unused
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#endif
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_PROTOTYPE( int do_segctl, (message *m_ptr) );
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#if ! USE_SEGCTL
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#define do_segctl do_unused
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#endif
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_PROTOTYPE( int do_irqctl, (message *m_ptr) );
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#if ! USE_IRQCTL
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#define do_irqctl do_unused
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#endif
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_PROTOTYPE( int do_devio, (message *m_ptr) );
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#if ! USE_DEVIO
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#define do_devio do_unused
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#endif
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_PROTOTYPE( int do_vdevio, (message *m_ptr) );
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#if ! USE_VDEVIO
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#define do_vdevio do_unused
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#endif
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_PROTOTYPE( int do_int86, (message *m_ptr) );
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_PROTOTYPE( int do_sdevio, (message *m_ptr) );
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#if ! USE_SDEVIO
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#define do_sdevio do_unused
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#endif
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_PROTOTYPE( int do_kill, (message *m_ptr) );
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#if ! USE_KILL
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#define do_kill do_unused
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#endif
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_PROTOTYPE( int do_getksig, (message *m_ptr) );
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#if ! USE_GETKSIG
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#define do_getksig do_unused
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#endif
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_PROTOTYPE( int do_endksig, (message *m_ptr) );
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#if ! USE_ENDKSIG
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#define do_endksig do_unused
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#endif
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_PROTOTYPE( int do_sigsend, (message *m_ptr) );
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#if ! USE_SIGSEND
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#define do_sigsend do_unused
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#endif
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_PROTOTYPE( int do_sigreturn, (message *m_ptr) );
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#if ! USE_SIGRETURN
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#define do_sigreturn do_unused
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#endif
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_PROTOTYPE( int do_times, (message *m_ptr) );
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#if ! USE_TIMES
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#define do_times do_unused
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#endif
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_PROTOTYPE( int do_setalarm, (message *m_ptr) );
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#if ! USE_SETALARM
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#define do_setalarm do_unused
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#endif
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_PROTOTYPE( int do_iopenable, (message *m_ptr) );
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#endif /* SYSTEM_H */
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