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

69 lines
2.6 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
#ifndef GLO_H
#define GLO_H
Initial revision
2005-04-21 16:53:53 +02:00
/* Global variables used in the kernel. This file contains the declarations;
* storage space for the variables is allocated in table.c, because EXTERN is
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
* defined as extern unless the _TABLE definition is seen. We rely on the
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
* compiler's default initialization (0) for several global variables.
Initial revision
2005-04-21 16:53:53 +02:00
*/
#ifdef _TABLE
#undef EXTERN
#define EXTERN
#endif
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>
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"
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
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
/* Variables relating to shutting down MINIX. */
EXTERN char kernel_exception; /* TRUE after system exceptions */
Added shutdown_started global variable. If it's set, we're in the process of doing a shutdown. Initial purpose is - suppress dead process diagnostic message.
2005-09-08 16:31:23 +02:00
EXTERN char shutdown_started; /* TRUE after shutdowns / reboots */
Initial revision
2005-04-21 16:53:53 +02:00
*** empty log message ***
2005-04-29 17:36:43 +02:00
/* Kernel information structures. This groups vital kernel information. */
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
EXTERN phys_bytes aout; /* address of a.out headers */
EXTERN struct kinfo kinfo; /* kernel information for users */
EXTERN struct machine machine; /* machine information for users */
EXTERN struct kmessages kmess; /* diagnostic messages in kernel */
EXTERN struct randomness krandom; /* gather kernel random information */
load average measurement implementation, accessable through getloadavg() system call in the library.
2005-11-14 16:50:46 +01:00
EXTERN struct loadinfo kloadinfo; /* status of load average */
Initial revision
2005-04-21 16:53:53 +02:00
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
/* Process scheduling information and the kernel reentry count. */
Rewrite of process scheduling: - current and maximum priority per process; - quantum size and current ticks left per process; - max number of full quantums in a row allow (otherwise current priority is decremented)
2005-06-30 17:55:19 +02:00
EXTERN struct proc *prev_ptr; /* previously running process */
Initial revision
2005-04-21 16:53:53 +02:00
EXTERN struct proc *proc_ptr; /* pointer to currently running process */
Cleaned up process table structure: removed p_type, p_pendcount. Removed stop sequence when MINIX is shut down. Disabled send mask checks --- to be replaced by proper mechanism. Fixed bug relating to 'shutdown -x'. Simplified clock accounting of realtime. Updated Makefiles for mkdept script.
2005-06-24 18:24:40 +02:00
EXTERN struct proc *next_ptr; /* next process to run after restart() */
EXTERN struct proc *bill_ptr; /* process to bill for clock ticks */
New NOTIFY system call! Queued at kernel. Duplicate messages (with same source and type) are overwritten with newer flags/ arguments. The interface from within the kernel is lock_notify(). User processes can make a system call with notify(). NOTIFY fully replaces the old notification mechanism.
2005-05-24 12:06:17 +02:00
EXTERN char k_reenter; /* kernel reentry count (entry count less 1) */
EXTERN unsigned lost_ticks; /* clock ticks counted outside clock task */
Initial revision
2005-04-21 16:53:53 +02:00
#if (CHIP == INTEL)
/* Interrupt related variables. */
*** empty log message ***
2005-05-02 16:30:04 +02:00
EXTERN irq_hook_t irq_hooks[NR_IRQ_HOOKS]; /* hooks for general use */
EXTERN irq_hook_t *irq_handlers[NR_IRQ_VECTORS];/* list of IRQ handlers */
Initial revision
2005-04-21 16:53:53 +02:00
EXTERN int irq_actids[NR_IRQ_VECTORS]; /* IRQ ID bits active */
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
EXTERN int irq_use; /* map of all in-use irq's */
Initial revision
2005-04-21 16:53:53 +02:00
/* Miscellaneous. */
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
EXTERN reg_t mon_ss, mon_sp; /* boot monitor stack */
EXTERN int mon_return; /* true if we can return to monitor */
IOPL, VM, and serial debug output (disabled).
2005-09-30 14:54:59 +02:00
EXTERN int do_serial_debug;
'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
EXTERN int who_e, who_p; /* message source endpoint and proc */
IOPL, VM, and serial debug output (disabled).
2005-09-30 14:54:59 +02:00
/* VM */
EXTERN phys_bytes vm_base;
EXTERN phys_bytes vm_size;
EXTERN phys_bytes vm_mem_high;
Initial revision
2005-04-21 16:53:53 +02:00
/* Variables that are initialized elsewhere are just extern here. */
- Kernel call handlers cleaned up. More strict checking of input parameters. - Moved generic_handler() from system.c to system/do_irqctl.c. - Set privileges of system processes somewhat stricter.
2005-07-29 17:26:23 +02:00
extern struct boot_image image[]; /* system image processes */
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
extern char *t_stack[]; /* task stack space */
extern struct segdesc_s gdt[]; /* global descriptor table */
Initial revision
2005-04-21 16:53:53 +02:00
EXTERN _PROTOTYPE( void (*level0_func), (void) );
#endif /* (CHIP == INTEL) */
#if (CHIP == M68000)
/* M68000 specific variables go here. */
#endif
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 /* GLO_H */
Reference in a new issue Copy permalink