1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 22 /* All Rights Reserved */ 23 24 25 /* 26 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 */ 29 30 #ifndef _SYS_SYSTM_H 31 #define _SYS_SYSTM_H 32 33 #pragma ident "%Z%%M% %I% %E% SMI" 34 35 #include <sys/types.h> 36 #include <sys/t_lock.h> 37 #include <sys/proc.h> 38 #include <sys/dditypes.h> 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 /* 45 * The pc_t is the type of the kernel's program counter. In general, a 46 * pc_t is a uintptr_t -- except for a sparcv9 kernel, in which case all 47 * instruction text is below 4G, and a pc_t is thus a uint32_t. 48 */ 49 #ifdef __sparcv9 50 typedef uint32_t pc_t; 51 #else 52 typedef uintptr_t pc_t; 53 #endif 54 55 /* 56 * Random set of variables used by more than one routine. 57 */ 58 59 #ifdef _KERNEL 60 #include <sys/varargs.h> 61 #include <sys/uadmin.h> 62 63 extern int hz; /* system clock rate */ 64 extern struct vnode *rootdir; /* pointer to vnode of root directory */ 65 extern struct vnode *devicesdir; /* pointer to /devices vnode */ 66 extern volatile clock_t lbolt; /* time in HZ since last boot */ 67 extern volatile int64_t lbolt64; /* lbolt computed as 64-bit value */ 68 extern int interrupts_unleashed; /* set after the spl0() in main() */ 69 70 extern char runin; /* scheduling flag */ 71 extern char runout; /* scheduling flag */ 72 extern char wake_sched; /* causes clock to wake swapper on next tick */ 73 extern char wake_sched_sec; /* causes clock to wake swapper after a sec */ 74 75 extern pgcnt_t maxmem; /* max available memory (pages) */ 76 extern pgcnt_t physmem; /* physical memory (pages) on this CPU */ 77 extern pfn_t physmax; /* highest numbered physical page present */ 78 extern pgcnt_t physinstalled; /* physical pages including PROM/boot use */ 79 80 extern caddr_t s_text; /* start of kernel text segment */ 81 extern caddr_t e_text; /* end of kernel text segment */ 82 extern caddr_t s_data; /* start of kernel text segment */ 83 extern caddr_t e_data; /* end of kernel text segment */ 84 85 extern pgcnt_t availrmem; /* Available resident (not swapable) */ 86 /* memory in pages. */ 87 extern pgcnt_t availrmem_initial; /* initial value of availrmem */ 88 extern pgcnt_t segspt_minfree; /* low water mark for availrmem in seg_spt */ 89 extern pgcnt_t freemem; /* Current free memory. */ 90 91 extern dev_t rootdev; /* device of the root */ 92 extern struct vnode *rootvp; /* vnode of root device */ 93 extern int root_is_svm; /* root is a mirrored device flag */ 94 extern char *volatile panicstr; /* panic string pointer */ 95 extern va_list panicargs; /* panic arguments */ 96 97 extern int rstchown; /* 1 ==> restrictive chown(2) semantics */ 98 extern int klustsize; 99 100 extern int abort_enable; /* Platform input-device abort policy */ 101 102 #ifdef C2_AUDIT 103 extern int audit_active; /* C2 auditing activate 1, absent 0. */ 104 #endif 105 106 extern int avenrun[]; /* array of load averages */ 107 108 extern char *isa_list; /* For sysinfo's isalist option */ 109 110 extern int noexec_user_stack; /* patchable via /etc/system */ 111 extern int noexec_user_stack_log; /* patchable via /etc/system */ 112 113 /* 114 * Use NFS client operations in the global zone only. Under contract with 115 * admin/install; do not change without coordinating with that consolidation. 116 */ 117 extern int nfs_global_client_only; 118 119 extern void report_stack_exec(proc_t *, caddr_t); 120 121 extern void startup(void); 122 extern void clkstart(void); 123 extern void post_startup(void); 124 extern void kern_setup1(void); 125 extern void ka_init(void); 126 extern void nodename_set(void); 127 128 /* 129 * for tod fault detection 130 */ 131 enum tod_fault_type { 132 TOD_REVERSED = 0, 133 TOD_STALLED, 134 TOD_JUMPED, 135 TOD_RATECHANGED, 136 TOD_RDONLY, 137 TOD_NOFAULT 138 }; 139 140 extern time_t tod_validate(time_t); 141 extern void tod_fault_reset(void); 142 extern void plat_tod_fault(enum tod_fault_type); 143 144 #ifndef _LP64 145 #ifndef min 146 int min(int, int); 147 #endif 148 149 #ifndef max 150 int max(int, int); 151 #endif 152 153 uint_t umin(uint_t, uint_t); 154 uint_t umax(uint_t, uint_t); 155 #endif /* !_LP64 */ 156 int grow(caddr_t); 157 int grow_internal(caddr_t, uint_t); 158 int brk_internal(caddr_t, uint_t); 159 timeout_id_t timeout(void (*)(void *), void *, clock_t); 160 timeout_id_t realtime_timeout(void (*)(void *), void *, clock_t); 161 clock_t untimeout(timeout_id_t); 162 void delay(clock_t); 163 int delay_sig(clock_t); 164 int nodev(); 165 int nulldev(); 166 major_t getudev(void); 167 int cmpldev(dev32_t *, dev_t); 168 dev_t expldev(dev32_t); 169 int bcmp(const void *, const void *, size_t) __PURE; 170 int stoi(char **); 171 void numtos(ulong_t, char *); 172 int strident_valid(const char *); 173 void strident_canon(char *, size_t); 174 int getsubopt(char **optionsp, char * const *tokens, char **valuep); 175 char *append_subopt(const char *, size_t, char *, const char *); 176 int ffs(uintmax_t); 177 int copyin(const void *, void *, size_t); 178 void copyin_noerr(const void *, void *, size_t); 179 int xcopyin(const void *, void *, size_t); 180 int xcopyin_nta(const void *, void *, size_t, int); 181 int copyout(const void *, void *, size_t); 182 void copyout_noerr(const void *, void *, size_t); 183 int xcopyout(const void *, void *, size_t); 184 int xcopyout_nta(const void *, void *, size_t, int); 185 int copyinstr(const char *, char *, size_t, size_t *); 186 int copyinstr_noerr(const char *, char *, size_t, size_t *); 187 int copyoutstr(const char *, char *, size_t, size_t *); 188 int copyoutstr_noerr(const char *, char *, size_t, size_t *); 189 int copystr(const char *, char *, size_t, size_t *); 190 void ucopy(const void *, void *, size_t); 191 void ucopystr(const char *, char *, size_t, size_t *); 192 void pgcopy(const void *, void *, size_t); 193 void ovbcopy(const void *, void *, size_t); 194 void uzero(void *, size_t); 195 int kcopy(const void *, void *, size_t); 196 int kcopy_nta(const void *, void *, size_t, int); 197 int kzero(void *, size_t); 198 199 int fuword8(const void *, uint8_t *); 200 int fuword16(const void *, uint16_t *); 201 int fuword32(const void *, uint32_t *); 202 int fulword(const void *, ulong_t *); 203 void fuword8_noerr(const void *, uint8_t *); 204 void fuword16_noerr(const void *, uint16_t *); 205 void fuword32_noerr(const void *, uint32_t *); 206 void fulword_noerr(const void *, ulong_t *); 207 208 #ifdef _LP64 209 int fuword64(const void *, uint64_t *); 210 void fuword64_noerr(const void *, uint64_t *); 211 #endif 212 213 int subyte(void *, uint8_t); 214 int suword8(void *, uint8_t); 215 int suword16(void *, uint16_t); 216 int suword32(void *, uint32_t); 217 int sulword(void *, ulong_t); 218 void subyte_noerr(void *, uint8_t); 219 void suword8_noerr(void *, uint8_t); 220 void suword16_noerr(void *, uint16_t); 221 void suword32_noerr(void *, uint32_t); 222 void sulword_noerr(void *, ulong_t); 223 224 #ifdef _LP64 225 int suword64(void *, uint64_t); 226 void suword64_noerr(void *, uint64_t); 227 #endif 228 229 #if !defined(_BOOT) 230 int setjmp(label_t *); 231 extern void longjmp(label_t *) 232 __NORETURN; 233 #pragma unknown_control_flow(setjmp) 234 #endif 235 236 caddr_t caller(void); 237 caddr_t callee(void); 238 int getpcstack(pc_t *, int); 239 int on_fault(label_t *); 240 void no_fault(void); 241 void halt(char *); 242 int scanc(size_t, uchar_t *, uchar_t *, uchar_t); 243 int movtuc(size_t, uchar_t *, uchar_t *, uchar_t *); 244 int splr(int); 245 int splhigh(void); 246 int splhi(void); 247 int splzs(void); 248 int spl0(void); 249 int spl6(void); 250 int spl7(void); 251 int spl8(void); 252 void splx(int); 253 void set_base_spl(void); 254 int __ipltospl(int); 255 256 void softcall_init(void); 257 void softcall(void (*)(void *), void *); 258 void softint(void); 259 260 extern void sync_icache(caddr_t, uint_t); 261 extern void sync_data_memory(caddr_t, size_t); 262 extern void hot_patch_kernel_text(caddr_t, uint32_t, uint_t); 263 264 void _insque(caddr_t, caddr_t); 265 void _remque(caddr_t); 266 267 /* casts to keep lint happy */ 268 #define insque(q, p) _insque((caddr_t)q, (caddr_t)p) 269 #define remque(q) _remque((caddr_t)q) 270 271 #pragma unknown_control_flow(on_fault) 272 273 struct timeval; 274 extern void uniqtime(struct timeval *); 275 struct timeval32; 276 extern void uniqtime32(struct timeval32 *); 277 278 uint_t page_num_pagesizes(void); 279 size_t page_get_pagesize(uint_t n); 280 281 extern int maxusers; 282 extern int pidmax; 283 284 extern void param_preset(void); 285 extern void param_calc(int); 286 extern void param_init(void); 287 extern void param_check(void); 288 289 #endif /* _KERNEL */ 290 291 /* 292 * Structure of the system-entry table. 293 * 294 * Changes to struct sysent should maintain binary compatibility with 295 * loadable system calls, although the interface is currently private. 296 * 297 * This means it should only be expanded on the end, and flag values 298 * should not be reused. 299 * 300 * It is desirable to keep the size of this struct a power of 2 for quick 301 * indexing. 302 */ 303 struct sysent { 304 char sy_narg; /* total number of arguments */ 305 #ifdef _LP64 306 unsigned short sy_flags; /* various flags as defined below */ 307 #else 308 unsigned char sy_flags; /* various flags as defined below */ 309 #endif 310 int (*sy_call)(); /* argp, rvalp-style handler */ 311 krwlock_t *sy_lock; /* lock for loadable system calls */ 312 int64_t (*sy_callc)(); /* C-style call hander or wrapper */ 313 }; 314 315 extern struct sysent sysent[]; 316 #ifdef _SYSCALL32_IMPL 317 extern struct sysent sysent32[]; 318 #endif 319 320 extern struct sysent nosys_ent; /* entry for invalid system call */ 321 322 #define NSYSCALL 256 /* number of system calls */ 323 324 #define LOADABLE_SYSCALL(s) (s->sy_flags & SE_LOADABLE) 325 #define LOADED_SYSCALL(s) (s->sy_flags & SE_LOADED) 326 327 /* 328 * sy_flags values 329 * Values 1, 2, and 4 were used previously for SETJUMP, ASYNC, and IOSYS. 330 */ 331 #define SE_32RVAL1 0x0 /* handler returns int32_t in rval1 */ 332 #define SE_32RVAL2 0x1 /* handler returns int32_t in rval2 */ 333 #define SE_64RVAL 0x2 /* handler returns int64_t in rvals */ 334 #define SE_RVAL_MASK 0x3 /* mask of rval_t bits */ 335 336 #define SE_LOADABLE 0x08 /* syscall is loadable */ 337 #define SE_LOADED 0x10 /* syscall is completely loaded */ 338 #define SE_NOUNLOAD 0x20 /* syscall never needs unload */ 339 #define SE_ARGC 0x40 /* syscall takes C-style args */ 340 341 /* 342 * Structure of the return-value parameter passed by reference to 343 * system entries. 344 */ 345 union rval { 346 struct { 347 int r_v1; 348 int r_v2; 349 } r_v; 350 off_t r_off; 351 offset_t r_offset; 352 time_t r_time; 353 int64_t r_vals; 354 }; 355 #define r_val1 r_v.r_v1 356 #define r_val2 r_v.r_v2 357 358 typedef union rval rval_t; 359 360 #ifdef _KERNEL 361 362 extern void reset_syscall_args(void); 363 extern int save_syscall_args(void); 364 extern uint_t get_syscall_args(klwp_t *lwp, long *argp, int *nargsp); 365 #ifdef _SYSCALL32_IMPL 366 extern uint_t get_syscall32_args(klwp_t *lwp, int *argp, int *nargp); 367 #endif 368 369 extern uint_t set_errno(uint_t error); 370 #pragma rarely_called(set_errno) 371 372 extern int64_t syscall_ap(void); 373 extern int64_t loadable_syscall(long, long, long, long, long, long, long, long); 374 extern int64_t nosys(void); 375 376 extern void swtch(void); 377 378 extern uint_t kcpc_key; /* TSD key for performance counter context */ 379 380 /* 381 * initname holds the path to init and is used as a point of rendezvous 382 * between krtld (which processes the boot arguments) and the kernel. 383 */ 384 #define INITNAME_SZ 32 385 extern char initname[INITNAME_SZ]; 386 387 /* 388 * initargs holds the arguments to init (such as -v, -s, -r, -m verbose) and 389 * is a point of rendezvous between krtld (which processes the boot arguments) 390 * and the kernel. 391 */ 392 extern char initargs[BOOTARGS_MAX]; 393 394 extern int exec_init(const char *, const char *); 395 extern int start_init_common(void); 396 397 #endif /* _KERNEL */ 398 399 #if defined(_KERNEL) || defined(_BOOT) 400 401 size_t strlcat(char *, const char *, size_t); 402 size_t strlen(const char *) __PURE; 403 char *strcat(char *, const char *); 404 char *strncat(char *, const char *, size_t); 405 char *strcpy(char *, const char *); 406 char *strncpy(char *, const char *, size_t); 407 /* Need to be consistent with <string.h> C++ definitions */ 408 #if __cplusplus >= 199711L 409 extern const char *strchr(const char *, int); 410 #ifndef _STRCHR_INLINE 411 #define _STRCHR_INLINE 412 extern "C++" { 413 inline char *strchr(char *__s, int __c) { 414 return (char *)strchr((const char *)__s, __c); 415 } 416 } 417 #endif /* _STRCHR_INLINE */ 418 extern const char *strrchr(const char *, int); 419 #ifndef _STRRCHR_INLINE 420 #define _STRRCHR_INLINE 421 extern "C++" { 422 inline char *strrchr(char *__s, int __c) { 423 return (char *)strrchr((const char *)__s, __c); 424 } 425 } 426 #endif /* _STRRCHR_INLINE */ 427 extern const char *strstr(const char *, const char *); 428 #ifndef _STRSTR_INLINE 429 #define _STRSTR_INLINE 430 extern "C++" { 431 inline char *strstr(char *__s1, const char *__s2) { 432 return (char *)strstr((const char *)__s1, __s2); 433 } 434 } 435 #endif /* _STRSTR_INLINE */ 436 #else /* __cplusplus >= 199711L */ 437 char *strchr(const char *, int); 438 char *strrchr(const char *, int); 439 char *strstr(const char *, const char *); 440 #endif /* __cplusplus >= 199711L */ 441 char *strnrchr(const char *, int, size_t); 442 int strcmp(const char *, const char *) __PURE; 443 int strncmp(const char *, const char *, size_t) __PURE; 444 int strcasecmp(const char *, const char *) __PURE; 445 int strncasecmp(const char *, const char *, size_t) __PURE; 446 /* Need to be consistent with <string.h> C++ definitions */ 447 #if __cplusplus >= 199711L 448 extern const char *strpbrk(const char *, const char *); 449 #ifndef _STRPBRK_INLINE 450 #define _STRPBRK_INLINE 451 extern "C++" { 452 inline char *strpbrk(char *__s1, const char *__s2) { 453 return (char *)strpbrk((const char *)__s1, __s2); 454 } 455 } 456 #endif /* _STRPBRK_INLINE */ 457 #else /* __cplusplus >= 199711L */ 458 char *strpbrk(const char *, const char *); 459 #endif /* __cplusplus >= 199711L */ 460 void bcopy(const void *, void *, size_t); 461 void bzero(void *, size_t); 462 463 extern void *memset(void *, int, size_t); 464 extern void *memcpy(void *, const void *, size_t); 465 extern void *memmove(void *, const void *, size_t); 466 extern int memcmp(const void *, const void *, size_t); 467 468 #ifdef __lint 469 extern int __lintzero; /* for spoofing lint */ 470 #else /* __lint */ 471 #define __lintzero 0 472 #endif /* __lint */ 473 #endif /* _KERNEL || _BOOT */ 474 475 #ifdef __cplusplus 476 } 477 #endif 478 479 #endif /* _SYS_SYSTM_H */ 480