sanchayanmaity/minix
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
minix/kernel/const.h

56 lines
2 KiB
C
Raw Normal View History

Reorganized system call library; uses separate file per call now. New configuration header file to include/ exclude functionality. Extracted privileged features from struct proc and create new struct priv. Renamed various system calls for readability.
2005-07-14 17:12:12 +02:00
/* General macros and constants used by the kernel. */
#ifndef CONST_H
#define CONST_H
Initial revision
2005-04-21 16:53:53 +02:00
Added args to lock() and unlock() to tell them apart, for use when lock timing is enabled in minix/config.h. Added phys_zero() routine to klib386.s that zeroes a range of memory, and added corresponding system call.
2005-06-01 11:37:52 +02:00
#include <minix/config.h>
Move bitmap manipulation macros to <minix/bitmap.h>
2006-06-20 11:50:26 +02:00
#include <minix/bitmap.h>
Reorganized system call library; uses separate file per call now. New configuration header file to include/ exclude functionality. Extracted privileged features from struct proc and create new struct priv. Renamed various system calls for readability.
2005-07-14 17:12:12 +02:00
#include "config.h"
Basic VM and other minor improvements. Not complete, probably not fully debugged or optimized.
2008-11-19 13:26:10 +01:00
#include "debug.h"
Initial revision
2005-04-21 16:53:53 +02:00
Check if kernel calls is allowed (from process' call mask) added. Not yet enforced. If a call is denied, this will be kprinted. Please report any such errors, so that I can adjust the mask before returning errors instead of warnings. Wrote CMOS driver. All CMOS code from FS has been removed. Currently the driver only supports get time calls. Set time is left out as an exercise for the book readers ... startup scripts were updated because the CMOS driver is needed early on. (IS got same treatment.) Don't forget to run MAKEDEV cmos in /dev/, otherwise the driver cannot be loaded.
2005-08-04 21:23:03 +02:00
/* Map a process number to a privilege structure id. */
Single boot driver loaded, while multiple can be included in the boot image. The user needs to set label=... to choose the driver of his or her choice. This driver will be mapped onto the controller that is set in controller=... Minor cleanup of kernel source code (boot image table now is static).
2005-08-03 18:06:35 +02:00
#define s_nr_to_id(n) (NR_TASKS + (n) + 1)
Initial revision
2005-04-21 16:53:53 +02:00
/* Translate a pointer to a field in a structure to a pointer to the structure
Reorganized system call library; uses separate file per call now. New configuration header file to include/ exclude functionality. Extracted privileged features from struct proc and create new struct priv. Renamed various system calls for readability.
2005-07-14 17:12:12 +02:00
* itself. So it translates '&struct_ptr->field' back to 'struct_ptr'.
Initial revision
2005-04-21 16:53:53 +02:00
*/
#define structof(type, field, ptr) \
((type *) (((char *) (ptr)) - offsetof(type, field)))
'proc number' is process slot, 'endpoint' are generation-aware process 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.
2006-03-03 11:00:02 +01:00
/* Translate an endpoint number to a process number, return success. */
#define isokendpt(e,p) isokendpt_d((e),(p),0)
#define okendpt(e,p) isokendpt_d((e),(p),1)
Reorganized system call library; uses separate file per call now. New configuration header file to include/ exclude functionality. Extracted privileged features from struct proc and create new struct priv. Renamed various system calls for readability.
2005-07-14 17:12:12 +02:00
/* Constants used in virtual_copy(). Values must be 0 and 1, respectively. */
#define _SRC_ 0
#define _DST_ 1
Various updates. * Removed some variants of the SYS_GETINFO calls from the kernel; replaced them with new PM and utils libary functionality. Fixed bugs in utils library that used old get_kenv() variant. * Implemented a buffer in the kernel to gather random data. Memory driver periodically checks this for /dev/random. A better random algorithm can now be implemented in the driver. Removed SYS_RANDOM; the SYS_GETINFO call is used instead. * Remove SYS_KMALLOC from the kernel. Memory allocation can now be done at the process manager with new 'other' library functions.
2005-06-03 15:55:06 +02:00
Reorganized system call library; uses separate file per call now. New configuration header file to include/ exclude functionality. Extracted privileged features from struct proc and create new struct priv. Renamed various system calls for readability.
2005-07-14 17:12:12 +02:00
#define get_sys_bit(map,bit) \
( MAP_CHUNK(map.chunk,bit) & (1 << CHUNK_OFFSET(bit) )
get_sys_bits
2006-06-23 17:32:24 +02:00
#define get_sys_bits(map,bit) \
( MAP_CHUNK(map.chunk,bit) )
Reorganized system call library; uses separate file per call now. New configuration header file to include/ exclude functionality. Extracted privileged features from struct proc and create new struct priv. Renamed various system calls for readability.
2005-07-14 17:12:12 +02:00
#define set_sys_bit(map,bit) \
( MAP_CHUNK(map.chunk,bit) |= (1 << CHUNK_OFFSET(bit) )
#define unset_sys_bit(map,bit) \
( MAP_CHUNK(map.chunk,bit) &= ~(1 << CHUNK_OFFSET(bit) )
#define NR_SYS_CHUNKS BITMAP_CHUNKS(NR_SYS_PROCS)
Basic VM and other minor improvements. Not complete, probably not fully debugged or optimized.
2008-11-19 13:26:10 +01:00
#define reallock do { int d; d = intr_disabled(); intr_disable(); locklevel++; if(d && locklevel == 1) { minix_panic("reallock while interrupts disabled first time", __LINE__); } } while(0)
added reenter check to lock_dequeue() to avoid unlocking of interrupts via cause_sig() during an exception. moved lock check configuration to <minix/sys_config.h> instead of kernel/config.h, because the 'relocking' field in kinfo depends on it. other prettification: common locking macro, whether lock timing is on or not.
2006-02-10 17:53:51 +01:00
Basic VM and other minor improvements. Not complete, probably not fully debugged or optimized.
2008-11-19 13:26:10 +01:00
#define realunlock do { if(!intr_disabled()) { minix_panic("realunlock while interrupts enabled", __LINE__); } if(locklevel < 1) { minix_panic("realunlock while locklevel below 1", __LINE__); } locklevel--; if(locklevel == 0) { intr_enable(); } } while(0)
added reenter check to lock_dequeue() to avoid unlocking of interrupts via cause_sig() during an exception. moved lock check configuration to <minix/sys_config.h> instead of kernel/config.h, because the 'relocking' field in kinfo depends on it. other prettification: common locking macro, whether lock timing is on or not.
2006-02-10 17:53:51 +01:00
Reorganized system call library; uses separate file per call now. New configuration header file to include/ exclude functionality. Extracted privileged features from struct proc and create new struct priv. Renamed various system calls for readability.
2005-07-14 17:12:12 +02:00
/* Disable/ enable hardware interrupts. The parameters of lock() and unlock()
* are used when debugging is enabled. See debug.h for more information.
*/
Basic VM and other minor improvements. Not complete, probably not fully debugged or optimized.
2008-11-19 13:26:10 +01:00
#define lock reallock
#define unlock realunlock
Initial revision
2005-04-21 16:53:53 +02:00
Split of architecture-dependent and -independent functions for i386, mainly in the kernel and headers. This split based on work by Ingmar Alting <iaalting@cs.vu.nl> done for his Minix PowerPC architecture port. . kernel does not program the interrupt controller directly, do any other architecture-dependent operations, or contain assembly any more, but uses architecture-dependent functions in arch/$(ARCH)/. . architecture-dependent constants and types defined in arch/$(ARCH)/include. . <ibm/portio.h> moved to <minix/portio.h>, as they have become, for now, architecture-independent functions. . int86, sdevio, readbios, and iopenable are now i386-specific kernel calls and live in arch/i386/do_* now. . i386 arch now supports even less 86 code; e.g. mpx86.s and klib86.s have gone, and 'machine.protected' is gone (and always taken to be 1 in i386). If 86 support is to return, it should be a new architecture. . prototypes for the architecture-dependent functions defined in kernel/arch/$(ARCH)/*.c but used in kernel/ are in kernel/proto.h . /etc/make.conf included in makefiles and shell scripts that need to know the building architecture; it defines ARCH=<arch>, currently only i386. . some basic per-architecture build support outside of the kernel (lib) . in clock.c, only dequeue a process if it was ready . fixes for new include files files deleted: . mpx/klib.s - only for choosing between mpx/klib86 and -386 . klib86.s - only for 86 i386-specific files files moved (or arch-dependent stuff moved) to arch/i386/: . mpx386.s (entry point) . klib386.s . sconst.h . exception.c . protect.c . protect.h . i8269.c
2006-12-22 16:22:27 +01:00
/* args to intr_init() */
#define INTS_ORIG 0 /* restore interrupts */
#define INTS_MINIX 1 /* initialize interrupts for minix */
Initial revision
2005-04-21 16:53:53 +02:00
. new kernel call sysctl for generic unprivileged system operations; now used for printing diagnostic messages through the kernel message buffer. this lets processes print diagnostics without sending messages to tty and log directly, simplifying the message protocol a lot and reducing difficulties with deadlocks and other situations in which diagnostics are blackholed (e.g. grants don't work). this makes DIAGNOSTICS(_S), ASYN_DIAGNOSTICS and DIAG_REPL obsolete, although tty and log still accept the codes for 'old' binaries. This also simplifies diagnostics in several servers and drivers - only tty needs its own kputc() now. . simplifications in vfs, and some effort to get the vnode references right (consistent) even during shutdown. m_mounted_on is now NULL for root filesystems (!) (the original and new root), a less awkward special case than 'm_mounted_on == m_root_node'. root now has exactly one reference, to root, if no files are open, just like all other filesystems. m_driver_e is unused.
2009-01-26 18:43:59 +01:00
/* for kputc() */
#define END_OF_KMESS 0
Reorganized system call library; uses separate file per call now. New configuration header file to include/ exclude functionality. Extracted privileged features from struct proc and create new struct priv. Renamed various system calls for readability.
2005-07-14 17:12:12 +02:00
#endif /* CONST_H */
Reference in a new issue Copy permalink