systm.h revision 87a18d3f5ba5da1985af86439cf1c94a9118b665
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_SYSTM_H
#define _SYS_SYSTM_H
#include <sys/types.h>
#include <sys/t_lock.h>
#include <sys/proc.h>
#include <sys/dditypes.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* The pc_t is the type of the kernel's program counter. In general, a
* pc_t is a uintptr_t -- except for a sparcv9 kernel, in which case all
* instruction text is below 4G, and a pc_t is thus a uint32_t.
*/
#ifdef __sparcv9
typedef uint32_t pc_t;
#else
typedef uintptr_t pc_t;
#endif
/*
* Random set of variables used by more than one routine.
*/
#ifdef _KERNEL
#include <sys/varargs.h>
#include <sys/uadmin.h>
extern int hz; /* system clock rate */
extern struct vnode *rootdir; /* pointer to vnode of root directory */
extern struct vnode *devicesdir; /* pointer to /devices vnode */
extern volatile clock_t lbolt; /* time in HZ since last boot */
extern volatile int64_t lbolt64; /* lbolt computed as 64-bit value */
extern int interrupts_unleashed; /* set after the spl0() in main() */
extern char runin; /* scheduling flag */
extern char runout; /* scheduling flag */
extern char wake_sched; /* causes clock to wake swapper on next tick */
extern char wake_sched_sec; /* causes clock to wake swapper after a sec */
extern pgcnt_t maxmem; /* max available memory (pages) */
extern pgcnt_t physmem; /* physical memory (pages) on this CPU */
extern pfn_t physmax; /* highest numbered physical page present */
extern pgcnt_t physinstalled; /* physical pages including PROM/boot use */
extern caddr_t s_text; /* start of kernel text segment */
extern caddr_t e_text; /* end of kernel text segment */
extern caddr_t s_data; /* start of kernel text segment */
extern caddr_t e_data; /* end of kernel text segment */
extern pgcnt_t availrmem; /* Available resident (not swapable) */
/* memory in pages. */
extern pgcnt_t availrmem_initial; /* initial value of availrmem */
extern pgcnt_t segspt_minfree; /* low water mark for availrmem in seg_spt */
extern pgcnt_t freemem; /* Current free memory. */
extern dev_t rootdev; /* device of the root */
extern struct vnode *rootvp; /* vnode of root device */
extern boolean_t root_is_svm; /* root is a mirrored device flag */
extern boolean_t root_is_ramdisk; /* root is boot_archive ramdisk */
extern uint32_t ramdisk_size; /* (KB) set only for sparc netboots */
extern char *volatile panicstr; /* panic string pointer */
extern va_list panicargs; /* panic arguments */
extern int rstchown; /* 1 ==> restrictive chown(2) semantics */
extern int klustsize;
extern int abort_enable; /* Platform input-device abort policy */
extern int audit_active; /* Solaris Auditing active 1, absent 0. */
extern int avenrun[]; /* array of load averages */
extern char *isa_list; /* For sysinfo's isalist option */
extern int noexec_user_stack; /* patchable via /etc/system */
extern int noexec_user_stack_log; /* patchable via /etc/system */
/*
* Use NFS client operations in the global zone only. Under contract with
* admin/install; do not change without coordinating with that consolidation.
*/
extern int nfs_global_client_only;
extern void report_stack_exec(proc_t *, caddr_t);
extern void startup(void);
extern void clkstart(void);
extern void post_startup(void);
extern void kern_setup1(void);
extern void ka_init(void);
extern void nodename_set(void);
/*
* for tod fault detection
*/
enum tod_fault_type {
TOD_REVERSED = 0,
TOD_STALLED,
TOD_JUMPED,
TOD_RATECHANGED,
TOD_RDONLY,
TOD_NOFAULT
};
extern time_t tod_validate(time_t);
extern void tod_fault_reset(void);
extern void plat_tod_fault(enum tod_fault_type);
#ifndef _LP64
#ifndef min
int min(int, int);
#endif
#ifndef max
int max(int, int);
#endif
uint_t umin(uint_t, uint_t);
uint_t umax(uint_t, uint_t);
#endif /* !_LP64 */
int grow(caddr_t);
int grow_internal(caddr_t, uint_t);
int brk_internal(caddr_t, uint_t);
typedef uint64_t callout_id_t;
timeout_id_t timeout(void (*)(void *), void *, clock_t);
timeout_id_t realtime_timeout(void (*)(void *), void *, clock_t);
clock_t untimeout(timeout_id_t);
/*
* The last argument to timeout_generic() is flags. See callo.h for the
* flags definitions.
*/
callout_id_t timeout_generic(int, void (*)(void *), void *, hrtime_t, hrtime_t,
int);
callout_id_t timeout_default(void (*)(void *), void *, clock_t);
callout_id_t realtime_timeout_default(void (*)(void *), void *, clock_t);
/*
* The last argument to untimeout_generic() is flags. See callout.c for the
* use.
*/
hrtime_t untimeout_generic(callout_id_t, int);
clock_t untimeout_default(callout_id_t, int);
void delay(clock_t);
int delay_sig(clock_t);
int nodev();
int nulldev();
major_t getudev(void);
int cmpldev(dev32_t *, dev_t);
dev_t expldev(dev32_t);
int bcmp(const void *, const void *, size_t) __PURE;
int stoi(char **);
void numtos(ulong_t, char *);
int strident_valid(const char *);
void strident_canon(char *, size_t);
int getsubopt(char **optionsp, char * const *tokens, char **valuep);
char *append_subopt(const char *, size_t, char *, const char *);
int ffs(uintmax_t);
int copyin(const void *, void *, size_t);
void copyin_noerr(const void *, void *, size_t);
int xcopyin(const void *, void *, size_t);
int xcopyin_nta(const void *, void *, size_t, int);
int copyout(const void *, void *, size_t);
void copyout_noerr(const void *, void *, size_t);
int xcopyout(const void *, void *, size_t);
int xcopyout_nta(const void *, void *, size_t, int);
int copyinstr(const char *, char *, size_t, size_t *);
int copyinstr_noerr(const char *, char *, size_t, size_t *);
int copyoutstr(const char *, char *, size_t, size_t *);
int copyoutstr_noerr(const char *, char *, size_t, size_t *);
int copystr(const char *, char *, size_t, size_t *);
void ucopy(const void *, void *, size_t);
void ucopystr(const char *, char *, size_t, size_t *);
void pgcopy(const void *, void *, size_t);
void ovbcopy(const void *, void *, size_t);
void uzero(void *, size_t);
int kcopy(const void *, void *, size_t);
int kcopy_nta(const void *, void *, size_t, int);
int kzero(void *, size_t);
int fuword8(const void *, uint8_t *);
int fuword16(const void *, uint16_t *);
int fuword32(const void *, uint32_t *);
int fulword(const void *, ulong_t *);
void fuword8_noerr(const void *, uint8_t *);
void fuword16_noerr(const void *, uint16_t *);
void fuword32_noerr(const void *, uint32_t *);
void fulword_noerr(const void *, ulong_t *);
#ifdef _LP64
int fuword64(const void *, uint64_t *);
void fuword64_noerr(const void *, uint64_t *);
#endif
int subyte(void *, uint8_t);
int suword8(void *, uint8_t);
int suword16(void *, uint16_t);
int suword32(void *, uint32_t);
int sulword(void *, ulong_t);
void subyte_noerr(void *, uint8_t);
void suword8_noerr(void *, uint8_t);
void suword16_noerr(void *, uint16_t);
void suword32_noerr(void *, uint32_t);
void sulword_noerr(void *, ulong_t);
#ifdef _LP64
int suword64(void *, uint64_t);
void suword64_noerr(void *, uint64_t);
#endif
#if !defined(_BOOT)
int setjmp(label_t *);
extern void longjmp(label_t *)
__NORETURN;
#pragma unknown_control_flow(setjmp)
#endif
caddr_t caller(void);
caddr_t callee(void);
int getpcstack(pc_t *, int);
int on_fault(label_t *);
void no_fault(void);
void halt(char *);
int scanc(size_t, uchar_t *, uchar_t *, uchar_t);
int movtuc(size_t, uchar_t *, uchar_t *, uchar_t *);
int splr(int);
int splhigh(void);
int splhi(void);
int splzs(void);
int spl0(void);
int spl6(void);
int spl7(void);
int spl8(void);
void splx(int);
void set_base_spl(void);
int __ipltospl(int);
void softcall_init(void);
void softcall(void (*)(void *), void *);
void softint(void);
extern void sync_icache(caddr_t, uint_t);
extern void sync_data_memory(caddr_t, size_t);
extern void hot_patch_kernel_text(caddr_t, uint32_t, uint_t);
void _insque(caddr_t, caddr_t);
void _remque(caddr_t);
/* casts to keep lint happy */
#define insque(q, p) _insque((caddr_t)q, (caddr_t)p)
#define remque(q) _remque((caddr_t)q)
#pragma unknown_control_flow(on_fault)
struct timeval;
extern void uniqtime(struct timeval *);
struct timeval32;
extern void uniqtime32(struct timeval32 *);
uint_t page_num_pagesizes(void);
size_t page_get_pagesize(uint_t n);
extern int maxusers;
extern int pidmax;
extern void param_preset(void);
extern void param_calc(int);
extern void param_init(void);
extern void param_check(void);
#endif /* _KERNEL */
/*
* Structure of the system-entry table.
*
* Changes to struct sysent should maintain binary compatibility with
* loadable system calls, although the interface is currently private.
*
* This means it should only be expanded on the end, and flag values
* should not be reused.
*
* It is desirable to keep the size of this struct a power of 2 for quick
* indexing.
*/
struct sysent {
char sy_narg; /* total number of arguments */
#ifdef _LP64
unsigned short sy_flags; /* various flags as defined below */
#else
unsigned char sy_flags; /* various flags as defined below */
#endif
int (*sy_call)(); /* argp, rvalp-style handler */
krwlock_t *sy_lock; /* lock for loadable system calls */
int64_t (*sy_callc)(); /* C-style call hander or wrapper */
};
extern struct sysent sysent[];
#ifdef _SYSCALL32_IMPL
extern struct sysent sysent32[];
#endif
extern struct sysent nosys_ent; /* entry for invalid system call */
#define NSYSCALL 256 /* number of system calls */
#define LOADABLE_SYSCALL(s) (s->sy_flags & SE_LOADABLE)
#define LOADED_SYSCALL(s) (s->sy_flags & SE_LOADED)
/*
* sy_flags values
* Values 1, 2, and 4 were used previously for SETJUMP, ASYNC, and IOSYS.
*/
#define SE_32RVAL1 0x0 /* handler returns int32_t in rval1 */
#define SE_32RVAL2 0x1 /* handler returns int32_t in rval2 */
#define SE_64RVAL 0x2 /* handler returns int64_t in rvals */
#define SE_RVAL_MASK 0x3 /* mask of rval_t bits */
#define SE_LOADABLE 0x08 /* syscall is loadable */
#define SE_LOADED 0x10 /* syscall is completely loaded */
#define SE_NOUNLOAD 0x20 /* syscall never needs unload */
#define SE_ARGC 0x40 /* syscall takes C-style args */
/*
* Structure of the return-value parameter passed by reference to
* system entries.
*/
union rval {
struct {
int r_v1;
int r_v2;
} r_v;
off_t r_off;
offset_t r_offset;
time_t r_time;
int64_t r_vals;
};
#define r_val1 r_v.r_v1
#define r_val2 r_v.r_v2
typedef union rval rval_t;
#ifdef _KERNEL
extern void reset_syscall_args(void);
extern int save_syscall_args(void);
extern uint_t get_syscall_args(klwp_t *lwp, long *argp, int *nargsp);
#ifdef _SYSCALL32_IMPL
extern uint_t get_syscall32_args(klwp_t *lwp, int *argp, int *nargp);
#endif
extern uint_t set_errno(uint_t error);
#pragma rarely_called(set_errno)
extern int64_t syscall_ap(void);
extern int64_t loadable_syscall(long, long, long, long, long, long, long, long);
extern int64_t nosys(void);
extern void swtch(void);
extern uint_t kcpc_key; /* TSD key for performance counter context */
/*
* initname holds the path to init and is used as a point of rendezvous
* between krtld (which processes the boot arguments) and the kernel.
*/
#define INITNAME_SZ 32
extern char initname[INITNAME_SZ];
/*
* initargs holds the arguments to init (such as -v, -s, -r, -m verbose) and
* is a point of rendezvous between krtld (which processes the boot arguments)
* and the kernel.
*/
extern char initargs[BOOTARGS_MAX];
extern int exec_init(const char *, const char *);
extern int start_init_common(void);
#endif /* _KERNEL */
#if defined(_KERNEL) || defined(_BOOT)
size_t strlcat(char *, const char *, size_t);
size_t strlen(const char *) __PURE;
char *strcat(char *, const char *);
char *strncat(char *, const char *, size_t);
char *strcpy(char *, const char *);
char *strncpy(char *, const char *, size_t);
/* Need to be consistent with <string.h> C++ definitions */
#if __cplusplus >= 199711L
extern const char *strchr(const char *, int);
#ifndef _STRCHR_INLINE
#define _STRCHR_INLINE
extern "C++" {
inline char *strchr(char *__s, int __c) {
return (char *)strchr((const char *)__s, __c);
}
}
#endif /* _STRCHR_INLINE */
extern const char *strrchr(const char *, int);
#ifndef _STRRCHR_INLINE
#define _STRRCHR_INLINE
extern "C++" {
inline char *strrchr(char *__s, int __c) {
return (char *)strrchr((const char *)__s, __c);
}
}
#endif /* _STRRCHR_INLINE */
extern const char *strstr(const char *, const char *);
#ifndef _STRSTR_INLINE
#define _STRSTR_INLINE
extern "C++" {
inline char *strstr(char *__s1, const char *__s2) {
return (char *)strstr((const char *)__s1, __s2);
}
}
#endif /* _STRSTR_INLINE */
#else /* __cplusplus >= 199711L */
char *strchr(const char *, int);
char *strrchr(const char *, int);
char *strstr(const char *, const char *);
#endif /* __cplusplus >= 199711L */
char *strnrchr(const char *, int, size_t);
int strcmp(const char *, const char *) __PURE;
int strncmp(const char *, const char *, size_t) __PURE;
int strcasecmp(const char *, const char *) __PURE;
int strncasecmp(const char *, const char *, size_t) __PURE;
/* Need to be consistent with <string.h> C++ definitions */
#if __cplusplus >= 199711L
extern const char *strpbrk(const char *, const char *);
#ifndef _STRPBRK_INLINE
#define _STRPBRK_INLINE
extern "C++" {
inline char *strpbrk(char *__s1, const char *__s2) {
return (char *)strpbrk((const char *)__s1, __s2);
}
}
#endif /* _STRPBRK_INLINE */
#else /* __cplusplus >= 199711L */
char *strpbrk(const char *, const char *);
#endif /* __cplusplus >= 199711L */
void bcopy(const void *, void *, size_t);
void bzero(void *, size_t);
extern void *memset(void *, int, size_t);
extern void *memcpy(void *, const void *, size_t);
extern void *memmove(void *, const void *, size_t);
extern int memcmp(const void *, const void *, size_t);
#ifdef __lint
extern int __lintzero; /* for spoofing lint */
#else /* __lint */
#define __lintzero 0
#endif /* __lint */
#endif /* _KERNEL || _BOOT */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_SYSTM_H */