| 1 | /* $NetBSD: proc.h,v 1.335 2016/10/19 09:44:01 skrll Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Andrew Doran. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /*- |
| 33 | * Copyright (c) 1986, 1989, 1991, 1993 |
| 34 | * The Regents of the University of California. All rights reserved. |
| 35 | * (c) UNIX System Laboratories, Inc. |
| 36 | * All or some portions of this file are derived from material licensed |
| 37 | * to the University of California by American Telephone and Telegraph |
| 38 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with |
| 39 | * the permission of UNIX System Laboratories, Inc. |
| 40 | * |
| 41 | * Redistribution and use in source and binary forms, with or without |
| 42 | * modification, are permitted provided that the following conditions |
| 43 | * are met: |
| 44 | * 1. Redistributions of source code must retain the above copyright |
| 45 | * notice, this list of conditions and the following disclaimer. |
| 46 | * 2. Redistributions in binary form must reproduce the above copyright |
| 47 | * notice, this list of conditions and the following disclaimer in the |
| 48 | * documentation and/or other materials provided with the distribution. |
| 49 | * 3. Neither the name of the University nor the names of its contributors |
| 50 | * may be used to endorse or promote products derived from this software |
| 51 | * without specific prior written permission. |
| 52 | * |
| 53 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 54 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 55 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 56 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 57 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 58 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 59 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 60 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 61 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 62 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 63 | * SUCH DAMAGE. |
| 64 | * |
| 65 | * @(#)proc.h 8.15 (Berkeley) 5/19/95 |
| 66 | */ |
| 67 | |
| 68 | #ifndef _SYS_PROC_H_ |
| 69 | #define _SYS_PROC_H_ |
| 70 | |
| 71 | #include <sys/lwp.h> |
| 72 | |
| 73 | #if defined(_KMEMUSER) || defined(_KERNEL) |
| 74 | |
| 75 | #if defined(_KERNEL_OPT) |
| 76 | #include "opt_multiprocessor.h" |
| 77 | #include "opt_kstack.h" |
| 78 | #include "opt_lockdebug.h" |
| 79 | #endif |
| 80 | |
| 81 | #include <machine/proc.h> /* Machine-dependent proc substruct */ |
| 82 | #include <machine/pcb.h> |
| 83 | #include <sys/aio.h> |
| 84 | #include <sys/idtype.h> |
| 85 | #include <sys/rwlock.h> |
| 86 | #include <sys/mqueue.h> |
| 87 | #include <sys/mutex.h> |
| 88 | #include <sys/condvar.h> |
| 89 | #include <sys/queue.h> |
| 90 | #include <sys/signalvar.h> |
| 91 | #include <sys/siginfo.h> |
| 92 | #include <sys/event.h> |
| 93 | #include <sys/specificdata.h> |
| 94 | |
| 95 | #ifndef _KERNEL |
| 96 | #include <sys/time.h> |
| 97 | #include <sys/resource.h> |
| 98 | #endif |
| 99 | |
| 100 | /* |
| 101 | * One structure allocated per session. |
| 102 | */ |
| 103 | struct session { |
| 104 | int s_count; /* Ref cnt; pgrps in session */ |
| 105 | u_int s_flags; |
| 106 | #define S_LOGIN_SET 1 /* s_login set in this session */ |
| 107 | struct proc *s_leader; /* Session leader */ |
| 108 | struct vnode *s_ttyvp; /* Vnode of controlling terminal */ |
| 109 | struct tty *s_ttyp; /* Controlling terminal */ |
| 110 | char s_login[MAXLOGNAME]; /* Setlogin() name */ |
| 111 | pid_t s_sid; /* Session ID (pid of leader) */ |
| 112 | }; |
| 113 | |
| 114 | /* |
| 115 | * One structure allocated per process group. |
| 116 | */ |
| 117 | struct pgrp { |
| 118 | LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members */ |
| 119 | struct session *pg_session; /* Pointer to session */ |
| 120 | pid_t pg_id; /* Pgrp id */ |
| 121 | int pg_jobc; /* |
| 122 | * Number of processes qualifying |
| 123 | * pgrp for job control |
| 124 | */ |
| 125 | }; |
| 126 | |
| 127 | /* |
| 128 | * Autoloadable syscall definition |
| 129 | */ |
| 130 | struct sc_autoload { |
| 131 | u_int al_code; |
| 132 | const char *al_module; |
| 133 | }; |
| 134 | |
| 135 | /* |
| 136 | * One structure allocated per emulation. |
| 137 | */ |
| 138 | struct exec_package; |
| 139 | struct ras; |
| 140 | struct kauth_cred; |
| 141 | |
| 142 | struct emul { |
| 143 | const char *e_name; /* Symbolic name */ |
| 144 | const char *e_path; /* Extra emulation path (NULL if none)*/ |
| 145 | #ifndef __HAVE_MINIMAL_EMUL |
| 146 | int e_flags; /* Miscellaneous flags, see above */ |
| 147 | /* Syscall handling function */ |
| 148 | const int *e_errno; /* Errno array */ |
| 149 | int e_nosys; /* Offset of the nosys() syscall */ |
| 150 | int e_nsysent; /* Number of system call entries */ |
| 151 | #endif |
| 152 | struct sysent *e_sysent; /* System call array */ |
| 153 | const char * const *e_syscallnames; /* System call name array */ |
| 154 | /* Signal sending function */ |
| 155 | struct sc_autoload *e_sc_autoload; /* List of autoloadable syscalls */ |
| 156 | void (*e_sendsig)(const struct ksiginfo *, |
| 157 | const sigset_t *); |
| 158 | void (*e_trapsignal)(struct lwp *, struct ksiginfo *); |
| 159 | int (*e_tracesig)(struct proc *, int); |
| 160 | char *e_sigcode; /* Start of sigcode */ |
| 161 | char *e_esigcode; /* End of sigcode */ |
| 162 | /* Set registers before execution */ |
| 163 | struct uvm_object **e_sigobject;/* shared sigcode object */ |
| 164 | void (*e_setregs)(struct lwp *, struct exec_package *, |
| 165 | vaddr_t); |
| 166 | |
| 167 | /* Per-process hooks */ |
| 168 | void (*e_proc_exec)(struct proc *, struct exec_package *); |
| 169 | void (*e_proc_fork)(struct proc *, struct lwp *, int); |
| 170 | void (*e_proc_exit)(struct proc *); |
| 171 | void (*e_lwp_fork)(struct lwp *, struct lwp *); |
| 172 | void (*e_lwp_exit)(struct lwp *); |
| 173 | |
| 174 | #ifdef __HAVE_SYSCALL_INTERN |
| 175 | void (*e_syscall_intern)(struct proc *); |
| 176 | #else |
| 177 | void (*e_syscall)(void); |
| 178 | #endif |
| 179 | /* Emulation specific sysctl data */ |
| 180 | struct sysctlnode *e_sysctlovly; |
| 181 | int (*e_fault)(struct proc *, vaddr_t, int); |
| 182 | |
| 183 | vaddr_t (*e_vm_default_addr)(struct proc *, vaddr_t, vsize_t, |
| 184 | int); |
| 185 | |
| 186 | /* Emulation-specific hook for userspace page faults */ |
| 187 | int (*e_usertrap)(struct lwp *, vaddr_t, void *); |
| 188 | |
| 189 | size_t e_ucsize; /* size of ucontext_t */ |
| 190 | void (*e_startlwp)(void *); |
| 191 | |
| 192 | /* Dtrace syscall probe */ |
| 193 | void (*e_dtrace_syscall)(uint32_t, register_t, |
| 194 | const struct sysent *, const void *, |
| 195 | const register_t *, int); |
| 196 | |
| 197 | /* Emulation specific support for ktracing signal posts */ |
| 198 | void (*e_ktrpsig)(int, sig_t, const sigset_t *, |
| 199 | const struct ksiginfo *); |
| 200 | }; |
| 201 | |
| 202 | /* |
| 203 | * Emulation miscelaneous flags |
| 204 | */ |
| 205 | #define EMUL_HAS_SYS___syscall 0x001 /* Has SYS___syscall */ |
| 206 | |
| 207 | /* |
| 208 | * Description of a process. |
| 209 | * |
| 210 | * This structure contains the information needed to manage a thread of |
| 211 | * control, known in UN*X as a process; it has references to substructures |
| 212 | * containing descriptions of things that the process uses, but may share |
| 213 | * with related processes. The process structure and the substructures |
| 214 | * are always addressible except for those marked "(PROC ONLY)" below, |
| 215 | * which might be addressible only on a processor on which the process |
| 216 | * is running. |
| 217 | * |
| 218 | * Field markings and the corresponding locks: |
| 219 | * |
| 220 | * a: p_auxlock |
| 221 | * k: ktrace_mutex |
| 222 | * l: proc_lock |
| 223 | * t: p_stmutex |
| 224 | * p: p_lock |
| 225 | * (: updated atomically |
| 226 | * :: unlocked, stable |
| 227 | */ |
| 228 | struct vmspace; |
| 229 | |
| 230 | struct proc { |
| 231 | LIST_ENTRY(proc) p_list; /* l: List of all processes */ |
| 232 | |
| 233 | kmutex_t p_auxlock; /* :: secondary, longer term lock */ |
| 234 | kmutex_t *p_lock; /* :: general mutex */ |
| 235 | kmutex_t p_stmutex; /* :: mutex on profiling state */ |
| 236 | krwlock_t p_reflock; /* p: lock for debugger, procfs */ |
| 237 | kcondvar_t p_waitcv; /* p: wait, stop CV on children */ |
| 238 | kcondvar_t p_lwpcv; /* p: wait, stop CV on LWPs */ |
| 239 | |
| 240 | /* Substructures: */ |
| 241 | struct kauth_cred *p_cred; /* p: Master copy of credentials */ |
| 242 | struct filedesc *p_fd; /* :: Ptr to open files structure */ |
| 243 | struct cwdinfo *p_cwdi; /* :: cdir/rdir/cmask info */ |
| 244 | struct pstats *p_stats; /* :: Accounting/stats (PROC ONLY) */ |
| 245 | struct plimit *p_limit; /* :: Process limits */ |
| 246 | struct vmspace *p_vmspace; /* :: Address space */ |
| 247 | struct sigacts *p_sigacts; /* :: Process sigactions */ |
| 248 | struct aioproc *p_aio; /* p: Asynchronous I/O data */ |
| 249 | u_int p_mqueue_cnt; /* (: Count of open message queues */ |
| 250 | specificdata_reference |
| 251 | p_specdataref; /* subsystem proc-specific data */ |
| 252 | |
| 253 | int p_exitsig; /* l: signal to send to parent on exit */ |
| 254 | int p_flag; /* p: PK_* flags */ |
| 255 | int p_sflag; /* p: PS_* flags */ |
| 256 | int p_slflag; /* s, l: PSL_* flags */ |
| 257 | int p_lflag; /* l: PL_* flags */ |
| 258 | int p_stflag; /* t: PST_* flags */ |
| 259 | char p_stat; /* p: S* process status. */ |
| 260 | char p_trace_enabled;/* p: cached by syscall_intern() */ |
| 261 | char p_pad1[2]; /* unused */ |
| 262 | |
| 263 | pid_t p_pid; /* :: Process identifier. */ |
| 264 | LIST_ENTRY(proc) p_pglist; /* l: List of processes in pgrp. */ |
| 265 | struct proc *p_pptr; /* l: Pointer to parent process. */ |
| 266 | LIST_ENTRY(proc) p_sibling; /* l: List of sibling processes. */ |
| 267 | LIST_HEAD(, proc) p_children; /* l: List of children. */ |
| 268 | LIST_HEAD(, lwp) p_lwps; /* p: List of LWPs. */ |
| 269 | struct ras *p_raslist; /* a: List of RAS entries */ |
| 270 | |
| 271 | /* The following fields are all zeroed upon creation in fork. */ |
| 272 | #define p_startzero p_nlwps |
| 273 | |
| 274 | int p_nlwps; /* p: Number of LWPs */ |
| 275 | int p_nzlwps; /* p: Number of zombie LWPs */ |
| 276 | int p_nrlwps; /* p: Number running/sleeping LWPs */ |
| 277 | int p_nlwpwait; /* p: Number of LWPs in lwp_wait1() */ |
| 278 | int p_ndlwps; /* p: Number of detached LWPs */ |
| 279 | int p_nlwpid; /* p: Next LWP ID */ |
| 280 | u_int p_nstopchild; /* l: Count of stopped/dead children */ |
| 281 | u_int p_waited; /* l: parent has waited on child */ |
| 282 | struct lwp *p_zomblwp; /* p: detached LWP to be reaped */ |
| 283 | struct lwp *p_vforklwp; /* p: parent LWP waiting at vfork() */ |
| 284 | |
| 285 | /* scheduling */ |
| 286 | void *p_sched_info; /* p: Scheduler-specific structure */ |
| 287 | fixpt_t p_estcpu; /* p: Time avg. value of p_cpticks */ |
| 288 | fixpt_t p_estcpu_inherited; /* p: cpu inherited from children */ |
| 289 | unsigned int p_forktime; |
| 290 | fixpt_t p_pctcpu; /* p: %cpu from dead LWPs */ |
| 291 | |
| 292 | struct proc *p_opptr; /* l: save parent during ptrace. */ |
| 293 | struct ptimers *p_timers; /* Timers: real, virtual, profiling */ |
| 294 | struct bintime p_rtime; /* p: real time */ |
| 295 | u_quad_t p_uticks; /* t: Statclock hits in user mode */ |
| 296 | u_quad_t p_sticks; /* t: Statclock hits in system mode */ |
| 297 | u_quad_t p_iticks; /* t: Statclock hits processing intr */ |
| 298 | |
| 299 | int p_traceflag; /* k: Kernel trace points */ |
| 300 | void *p_tracep; /* k: Trace private data */ |
| 301 | struct vnode *p_textvp; /* :: Vnode of executable */ |
| 302 | |
| 303 | struct emul *p_emul; /* :: emulation information */ |
| 304 | void *p_emuldata; /* :: per-proc emul data, or NULL */ |
| 305 | const struct execsw *p_execsw; /* :: exec package information */ |
| 306 | struct klist p_klist; /* p: knotes attached to proc */ |
| 307 | |
| 308 | LIST_HEAD(, lwp) p_sigwaiters; /* p: LWPs waiting for signals */ |
| 309 | sigpend_t p_sigpend; /* p: pending signals */ |
| 310 | struct lcproc *p_lwpctl; /* p, a: _lwp_ctl() information */ |
| 311 | pid_t p_ppid; /* :: cached parent pid */ |
| 312 | pid_t p_fpid; /* :: forked pid */ |
| 313 | u_int p_nsems; /* Count of semaphores */ |
| 314 | |
| 315 | /* |
| 316 | * End area that is zeroed on creation |
| 317 | */ |
| 318 | #define p_endzero p_startcopy |
| 319 | |
| 320 | /* |
| 321 | * The following fields are all copied upon creation in fork. |
| 322 | */ |
| 323 | #define p_startcopy p_sigctx |
| 324 | |
| 325 | struct sigctx p_sigctx; /* p: Shared signal state */ |
| 326 | |
| 327 | u_char p_nice; /* p: Process "nice" value */ |
| 328 | char p_comm[MAXCOMLEN+1]; |
| 329 | /* p: basename of last exec file */ |
| 330 | struct pgrp *p_pgrp; /* l: Pointer to process group */ |
| 331 | |
| 332 | vaddr_t p_psstrp; /* :: address of process's ps_strings */ |
| 333 | u_int p_pax; /* :: PAX flags */ |
| 334 | |
| 335 | int p_xexit; /* p: exit code */ |
| 336 | /* |
| 337 | * End area that is copied on creation |
| 338 | */ |
| 339 | #define p_endcopy p_xsig |
| 340 | u_short p_xsig; /* p: stop signal */ |
| 341 | u_short p_acflag; /* p: Acc. flags; see struct lwp also */ |
| 342 | struct mdproc p_md; /* p: Any machine-dependent fields */ |
| 343 | vaddr_t p_stackbase; /* :: ASLR randomized stack base */ |
| 344 | struct kdtrace_proc *p_dtrace; /* :: DTrace-specific data. */ |
| 345 | }; |
| 346 | |
| 347 | #define p_rlimit p_limit->pl_rlimit |
| 348 | #define p_session p_pgrp->pg_session |
| 349 | #define p_pgid p_pgrp->pg_id |
| 350 | |
| 351 | #endif /* _KMEMUSER || _KERNEL */ |
| 352 | |
| 353 | /* |
| 354 | * Status values. |
| 355 | */ |
| 356 | #define SIDL 1 /* Process being created by fork */ |
| 357 | #define SACTIVE 2 /* Process is not stopped */ |
| 358 | #define SDYING 3 /* About to die */ |
| 359 | #define SSTOP 4 /* Process debugging or suspension */ |
| 360 | #define SZOMB 5 /* Awaiting collection by parent */ |
| 361 | #define SDEAD 6 /* Almost a zombie */ |
| 362 | |
| 363 | #define P_ZOMBIE(p) \ |
| 364 | ((p)->p_stat == SZOMB || (p)->p_stat == SDYING || (p)->p_stat == SDEAD) |
| 365 | |
| 366 | /* |
| 367 | * These flags are kept in p_flag and are protected by p_lock. Access from |
| 368 | * process context only. |
| 369 | */ |
| 370 | #define PK_ADVLOCK 0x00000001 /* Process may hold a POSIX advisory lock */ |
| 371 | #define PK_SYSTEM 0x00000002 /* System process (kthread) */ |
| 372 | #define PK_SYSVSEM 0x00000004 /* Used SysV semaphores */ |
| 373 | #define PK_SUGID 0x00000100 /* Had set id privileges since last exec */ |
| 374 | #define PK_EXEC 0x00004000 /* Process called exec */ |
| 375 | #define PK_NOCLDWAIT 0x00020000 /* No zombies if child dies */ |
| 376 | #define PK_32 0x00040000 /* 32-bit process (used on 64-bit kernels) */ |
| 377 | #define PK_CLDSIGIGN 0x00080000 /* Process is ignoring SIGCHLD */ |
| 378 | #define PK_MARKER 0x80000000 /* Is a dummy marker process */ |
| 379 | |
| 380 | /* |
| 381 | * These flags are kept in p_sflag and are protected by p_lock. Access from |
| 382 | * process context only. |
| 383 | */ |
| 384 | #define PS_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */ |
| 385 | #define PS_RUMP_LWPEXIT 0x00000400 /* LWPs in RUMP kernel should exit for GC */ |
| 386 | #define PS_WCORE 0x00001000 /* Process needs to dump core */ |
| 387 | #define PS_WEXIT 0x00002000 /* Working on exiting */ |
| 388 | #define PS_STOPFORK 0x00800000 /* Child will be stopped on fork(2) */ |
| 389 | #define PS_STOPEXEC 0x01000000 /* Will be stopped on exec(2) */ |
| 390 | #define PS_STOPEXIT 0x02000000 /* Will be stopped at process exit */ |
| 391 | #define PS_NOTIFYSTOP 0x10000000 /* Notify parent of successful STOP */ |
| 392 | #define PS_COREDUMP 0x20000000 /* Process core-dumped */ |
| 393 | #define PS_CONTINUED 0x40000000 /* Process is continued */ |
| 394 | #define PS_STOPPING 0x80000000 /* Transitioning SACTIVE -> SSTOP */ |
| 395 | |
| 396 | /* |
| 397 | * These flags are kept in p_slflag and are protected by the proc_lock |
| 398 | * and p_lock. Access from process context only. |
| 399 | */ |
| 400 | #define PSL_TRACEFORK 0x00000001 /* traced process wants fork events */ |
| 401 | #define PSL_TRACED 0x00000800 /* Debugged process being traced */ |
| 402 | #define PSL_FSTRACE 0x00010000 /* Debugger process being traced by procfs */ |
| 403 | #define PSL_CHTRACED 0x00400000 /* Child has been traced & reparented */ |
| 404 | #define PSL_SYSCALL 0x04000000 /* process has PT_SYSCALL enabled */ |
| 405 | #define PSL_SYSCALLEMU 0x08000000 /* cancel in-progress syscall */ |
| 406 | |
| 407 | /* |
| 408 | * Kept in p_stflag and protected by p_stmutex. |
| 409 | */ |
| 410 | #define PST_PROFIL 0x00000020 /* Has started profiling */ |
| 411 | |
| 412 | /* |
| 413 | * Kept in p_lflag and protected by the proc_lock. Access |
| 414 | * from process context only. |
| 415 | */ |
| 416 | #define PL_CONTROLT 0x00000002 /* Has a controlling terminal */ |
| 417 | #define PL_PPWAIT 0x00000010 /* Parent is waiting for child exec/exit */ |
| 418 | #define PL_SIGCOMPAT 0x00000200 /* Has used compat signal trampoline */ |
| 419 | #define PL_ORPHANPG 0x20000000 /* Member of an orphaned pgrp */ |
| 420 | |
| 421 | #if defined(_KMEMUSER) || defined(_KERNEL) |
| 422 | |
| 423 | /* |
| 424 | * Macro to compute the exit signal to be delivered. |
| 425 | */ |
| 426 | #define P_EXITSIG(p) \ |
| 427 | (((p)->p_slflag & (PSL_TRACED|PSL_FSTRACE)) ? SIGCHLD : p->p_exitsig) |
| 428 | /* |
| 429 | * Compute a wait(2) 16 bit exit status code |
| 430 | */ |
| 431 | #define P_WAITSTATUS(p) W_EXITCODE((p)->p_xexit, ((p)->p_xsig | \ |
| 432 | (((p)->p_sflag & PS_COREDUMP) ? WCOREFLAG : 0))) |
| 433 | |
| 434 | LIST_HEAD(proclist, proc); /* A list of processes */ |
| 435 | |
| 436 | /* |
| 437 | * This structure associates a proclist with its lock. |
| 438 | */ |
| 439 | struct proclist_desc { |
| 440 | struct proclist *pd_list; /* The list */ |
| 441 | /* |
| 442 | * XXX Add a pointer to the proclist's lock eventually. |
| 443 | */ |
| 444 | }; |
| 445 | |
| 446 | #ifdef _KERNEL |
| 447 | |
| 448 | /* |
| 449 | * We use process IDs <= PID_MAX until there are > 16k processes. |
| 450 | * NO_PGID is used to represent "no process group" for a tty. |
| 451 | */ |
| 452 | #define PID_MAX 30000 |
| 453 | #define NO_PGID ((pid_t)-1) |
| 454 | |
| 455 | #define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) |
| 456 | |
| 457 | /* |
| 458 | * Flags passed to fork1(). |
| 459 | */ |
| 460 | #define FORK_PPWAIT 0x0001 /* Block parent until child exit */ |
| 461 | #define FORK_SHAREVM 0x0002 /* Share vmspace with parent */ |
| 462 | #define FORK_SHARECWD 0x0004 /* Share cdir/rdir/cmask */ |
| 463 | #define FORK_SHAREFILES 0x0008 /* Share file descriptors */ |
| 464 | #define FORK_SHARESIGS 0x0010 /* Share signal actions */ |
| 465 | #define FORK_NOWAIT 0x0020 /* Make init the parent of the child */ |
| 466 | #define FORK_CLEANFILES 0x0040 /* Start with a clean descriptor set */ |
| 467 | #define FORK_SYSTEM 0x0080 /* Fork a kernel thread */ |
| 468 | |
| 469 | extern struct proc proc0; /* Process slot for swapper */ |
| 470 | extern u_int nprocs; /* Current number of procs */ |
| 471 | extern int maxproc; /* Max number of procs */ |
| 472 | #define vmspace_kernel() (proc0.p_vmspace) |
| 473 | |
| 474 | extern kmutex_t *proc_lock; |
| 475 | extern struct proclist allproc; /* List of all processes */ |
| 476 | extern struct proclist zombproc; /* List of zombie processes */ |
| 477 | |
| 478 | extern struct proc *initproc; /* Process slots for init, pager */ |
| 479 | |
| 480 | extern const struct proclist_desc proclists[]; |
| 481 | |
| 482 | extern struct pool ptimer_pool; /* Memory pool for ptimers */ |
| 483 | |
| 484 | int proc_find_locked(struct lwp *, struct proc **, pid_t); |
| 485 | proc_t * proc_find_raw(pid_t); |
| 486 | proc_t * proc_find(pid_t); /* Find process by ID */ |
| 487 | struct pgrp * pgrp_find(pid_t); /* Find process group by ID */ |
| 488 | |
| 489 | void procinit(void); |
| 490 | void procinit_sysctl(void); |
| 491 | int proc_enterpgrp(struct proc *, pid_t, pid_t, bool); |
| 492 | void proc_leavepgrp(struct proc *); |
| 493 | void proc_sesshold(struct session *); |
| 494 | void proc_sessrele(struct session *); |
| 495 | void fixjobc(struct proc *, struct pgrp *, int); |
| 496 | |
| 497 | int tsleep(wchan_t, pri_t, const char *, int); |
| 498 | int mtsleep(wchan_t, pri_t, const char *, int, kmutex_t *); |
| 499 | void wakeup(wchan_t); |
| 500 | int kpause(const char *, bool, int, kmutex_t *); |
| 501 | void exit1(struct lwp *, int, int) __dead; |
| 502 | int kill1(struct lwp *l, pid_t pid, ksiginfo_t *ksi, register_t *retval); |
| 503 | int do_sys_wait(int *, int *, int, struct rusage *); |
| 504 | int do_sys_waitid(idtype_t, id_t, int *, int *, int, struct wrusage *, |
| 505 | siginfo_t *); |
| 506 | |
| 507 | struct proc *proc_alloc(void); |
| 508 | void proc0_init(void); |
| 509 | pid_t proc_alloc_pid(struct proc *); |
| 510 | void proc_free_pid(pid_t); |
| 511 | void proc_free_mem(struct proc *); |
| 512 | void exit_lwps(struct lwp *l); |
| 513 | int fork1(struct lwp *, int, int, void *, size_t, |
| 514 | void (*)(void *), void *, register_t *, struct proc **); |
| 515 | int pgid_in_session(struct proc *, pid_t); |
| 516 | void cpu_lwp_fork(struct lwp *, struct lwp *, void *, size_t, |
| 517 | void (*)(void *), void *); |
| 518 | void cpu_lwp_free(struct lwp *, int); |
| 519 | void cpu_lwp_free2(struct lwp *); |
| 520 | void cpu_spawn_return(struct lwp*); |
| 521 | |
| 522 | #ifdef __HAVE_SYSCALL_INTERN |
| 523 | void syscall_intern(struct proc *); |
| 524 | #endif |
| 525 | |
| 526 | void child_return(void *); |
| 527 | |
| 528 | int proc_isunder(struct proc *, struct lwp *); |
| 529 | void proc_stop(struct proc *, int, int); |
| 530 | int proc_uidmatch(kauth_cred_t, kauth_cred_t); |
| 531 | |
| 532 | int proc_vmspace_getref(struct proc *, struct vmspace **); |
| 533 | void proc_crmod_leave(kauth_cred_t, kauth_cred_t, bool); |
| 534 | void proc_crmod_enter(void); |
| 535 | |
| 536 | int proc_specific_key_create(specificdata_key_t *, specificdata_dtor_t); |
| 537 | void proc_specific_key_delete(specificdata_key_t); |
| 538 | void proc_initspecific(struct proc *); |
| 539 | void proc_finispecific(struct proc *); |
| 540 | void * proc_getspecific(struct proc *, specificdata_key_t); |
| 541 | void proc_setspecific(struct proc *, specificdata_key_t, void *); |
| 542 | int proc_compare(const struct proc *, const struct lwp *, |
| 543 | const struct proc *, const struct lwp *); |
| 544 | |
| 545 | int proclist_foreach_call(struct proclist *, |
| 546 | int (*)(struct proc *, void *arg), void *); |
| 547 | |
| 548 | static inline struct proc * |
| 549 | _proclist_skipmarker(struct proc *p0) |
| 550 | { |
| 551 | struct proc *p = p0; |
| 552 | |
| 553 | while (p != NULL && p->p_flag & PK_MARKER) |
| 554 | p = LIST_NEXT(p, p_list); |
| 555 | |
| 556 | return p; |
| 557 | } |
| 558 | |
| 559 | #define PROC_PTRSZ(p) (((p)->p_flag & PK_32) ? sizeof(int) : sizeof(void *)) |
| 560 | #define PROC_REGSZ(p) (((p)->p_flag & PK_32) ? \ |
| 561 | sizeof(process_reg32) : sizeof(struct reg)) |
| 562 | #define PROC_FPREGSZ(p) (((p)->p_flag & PK_32) ? \ |
| 563 | sizeof(process_fpreg32) : sizeof(struct fpreg)) |
| 564 | |
| 565 | /* |
| 566 | * PROCLIST_FOREACH: iterate on the given proclist, skipping PK_MARKER ones. |
| 567 | */ |
| 568 | #define PROCLIST_FOREACH(var, head) \ |
| 569 | for ((var) = LIST_FIRST(head); \ |
| 570 | ((var) = _proclist_skipmarker(var)) != NULL; \ |
| 571 | (var) = LIST_NEXT(var, p_list)) |
| 572 | |
| 573 | #ifdef KSTACK_CHECK_MAGIC |
| 574 | void kstack_setup_magic(const struct lwp *); |
| 575 | void kstack_check_magic(const struct lwp *); |
| 576 | #else |
| 577 | #define kstack_setup_magic(x) |
| 578 | #define kstack_check_magic(x) |
| 579 | #endif |
| 580 | |
| 581 | extern struct emul emul_netbsd; |
| 582 | |
| 583 | #endif /* _KERNEL */ |
| 584 | |
| 585 | /* |
| 586 | * Kernel stack parameters. |
| 587 | * |
| 588 | * KSTACK_LOWEST_ADDR: return the lowest address of the LWP's kernel stack, |
| 589 | * excluding red-zone. |
| 590 | * |
| 591 | * KSTACK_SIZE: the size kernel stack for a LWP, excluding red-zone. |
| 592 | * |
| 593 | * if <machine/proc.h> provides the MD definition, it will be used. |
| 594 | */ |
| 595 | #ifndef KSTACK_LOWEST_ADDR |
| 596 | #define KSTACK_LOWEST_ADDR(l) ((void *)ALIGN((struct pcb *)((l)->l_addr) + 1)) |
| 597 | #endif |
| 598 | #ifndef KSTACK_SIZE |
| 599 | #define KSTACK_SIZE (USPACE - ALIGN(sizeof(struct pcb))) |
| 600 | #endif |
| 601 | |
| 602 | #endif /* _KMEMUSER || _KERNEL */ |
| 603 | |
| 604 | #endif /* !_SYS_PROC_H_ */ |
| 605 | |