Annotation of src/sys/sys/proc.h, Revision 1.236.2.4
1.236.2.4! yamt 1: /* $NetBSD: proc.h,v 1.236.2.3 2007/02/23 15:57:45 yamt Exp $ */
1.233 ad 2:
3: /*-
4: * Copyright (c) 2006, 2007 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: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the NetBSD
21: * Foundation, Inc. and its contributors.
22: * 4. Neither the name of The NetBSD Foundation nor the names of its
23: * contributors may be used to endorse or promote products derived
24: * from this software without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36: * POSSIBILITY OF SUCH DAMAGE.
37: */
1.29 cgd 38:
39: /*-
40: * Copyright (c) 1986, 1989, 1991, 1993
41: * The Regents of the University of California. All rights reserved.
42: * (c) UNIX System Laboratories, Inc.
43: * All or some portions of this file are derived from material licensed
44: * to the University of California by American Telephone and Telegraph
45: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
46: * the permission of UNIX System Laboratories, Inc.
47: *
48: * Redistribution and use in source and binary forms, with or without
49: * modification, are permitted provided that the following conditions
50: * are met:
51: * 1. Redistributions of source code must retain the above copyright
52: * notice, this list of conditions and the following disclaimer.
53: * 2. Redistributions in binary form must reproduce the above copyright
54: * notice, this list of conditions and the following disclaimer in the
55: * documentation and/or other materials provided with the distribution.
1.168 agc 56: * 3. Neither the name of the University nor the names of its contributors
1.29 cgd 57: * may be used to endorse or promote products derived from this software
58: * without specific prior written permission.
59: *
60: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
61: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
62: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
63: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
64: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
65: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
66: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
70: * SUCH DAMAGE.
71: *
1.59 fvdl 72: * @(#)proc.h 8.15 (Berkeley) 5/19/95
1.29 cgd 73: */
74:
75: #ifndef _SYS_PROC_H_
76: #define _SYS_PROC_H_
1.57 mrg 77:
1.131 mrg 78: #if defined(_KERNEL_OPT)
1.83 thorpej 79: #include "opt_multiprocessor.h"
1.139 yamt 80: #include "opt_kstack.h"
1.224 yamt 81: #include "opt_lockdebug.h"
1.83 thorpej 82: #endif
83:
1.122 lukem 84: #include <machine/proc.h> /* Machine-dependent proc substruct */
1.79 thorpej 85: #include <sys/lock.h>
1.233 ad 86: #include <sys/rwlock.h>
87: #include <sys/mutex.h>
88: #include <sys/condvar.h>
1.153 thorpej 89: #include <sys/lwp.h>
1.32 mycroft 90: #include <sys/queue.h>
1.87 thorpej 91: #include <sys/callout.h>
1.118 jdolecek 92: #include <sys/signalvar.h>
1.170 christos 93: #include <sys/siginfo.h>
1.147 jdolecek 94: #include <sys/event.h>
1.228 thorpej 95: #include <sys/specificdata.h>
1.29 cgd 96:
1.220 yamt 97: #ifndef _KERNEL
98: #include <sys/time.h>
99: #include <sys/resource.h>
100: #endif
101:
1.29 cgd 102: /*
103: * One structure allocated per session.
104: */
1.122 lukem 105: struct session {
106: int s_count; /* Ref cnt; pgrps in session */
1.159 dsl 107: u_int s_flags;
108: #define S_LOGIN_SET 1 /* s_login set in this session */
1.122 lukem 109: struct proc *s_leader; /* Session leader */
110: struct vnode *s_ttyvp; /* Vnode of controlling terminal */
111: struct tty *s_ttyp; /* Controlling terminal */
112: char s_login[MAXLOGNAME]; /* Setlogin() name */
113: pid_t s_sid; /* Session ID (pid of leader) */
1.29 cgd 114: };
115:
116: /*
117: * One structure allocated per process group.
118: */
1.122 lukem 119: struct pgrp {
120: LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members */
121: struct session *pg_session; /* Pointer to session */
122: pid_t pg_id; /* Pgrp id */
123: int pg_jobc; /*
124: * Number of processes qualifying
125: * pgrp for job control
126: */
1.29 cgd 127: };
128:
129: /*
1.40 christos 130: * One structure allocated per emulation.
131: */
132: struct exec_package;
133: struct ps_strings;
1.144 gmcgarry 134: struct ras;
1.221 elad 135: struct kauth_cred;
1.40 christos 136:
1.122 lukem 137: struct emul {
138: const char *e_name; /* Symbolic name */
139: const char *e_path; /* Extra emulation path (NULL if none)*/
1.130 manu 140: #ifndef __HAVE_MINIMAL_EMUL
1.129 manu 141: int e_flags; /* Miscellaneous flags, see above */
1.116 mycroft 142: /* Syscall handling function */
1.122 lukem 143: const int *e_errno; /* Errno array */
144: int e_nosys; /* Offset of the nosys() syscall */
145: int e_nsysent; /* Number of system call entries */
1.116 mycroft 146: #endif
1.111 jdolecek 147: const struct sysent *e_sysent; /* System call array */
1.122 lukem 148: const char * const *e_syscallnames; /* System call name array */
1.120 jdolecek 149: /* Signal sending function */
1.196 perry 150: void (*e_sendsig)(const struct ksiginfo *,
151: const sigset_t *);
1.233 ad 152: void (*e_trapsignal)(struct lwp *, struct ksiginfo *);
1.196 perry 153: int (*e_tracesig)(struct proc *, int);
1.122 lukem 154: char *e_sigcode; /* Start of sigcode */
155: char *e_esigcode; /* End of sigcode */
1.134 jdolecek 156: /* Set registers before execution */
1.169 chs 157: struct uvm_object **e_sigobject;/* shared sigcode object */
1.196 perry 158: void (*e_setregs)(struct lwp *, struct exec_package *,
159: u_long);
1.106 jdolecek 160:
1.112 jdolecek 161: /* Per-process hooks */
1.196 perry 162: void (*e_proc_exec)(struct proc *, struct exec_package *);
163: void (*e_proc_fork)(struct proc *, struct proc *, int);
164: void (*e_proc_exit)(struct proc *);
165: void (*e_lwp_fork)(struct lwp *, struct lwp *);
166: void (*e_lwp_exit)(struct lwp *);
1.112 jdolecek 167:
1.116 mycroft 168: #ifdef __HAVE_SYSCALL_INTERN
1.196 perry 169: void (*e_syscall_intern)(struct proc *);
1.116 mycroft 170: #else
1.196 perry 171: void (*e_syscall)(void);
1.116 mycroft 172: #endif
1.180 atatat 173: /* Emulation specific sysctl data */
174: struct sysctlnode *e_sysctlovly;
1.217 drochner 175: int (*e_fault)(struct proc *, vaddr_t, int);
1.198 fvdl 176:
177: vaddr_t (*e_vm_default_addr)(struct proc *, vaddr_t, vsize_t);
1.200 fvdl 178:
179: /* Emulation-specific hook for userspace page faults */
180: int (*e_usertrap)(struct lwp *, vaddr_t, void *);
1.218 cube 181:
1.233 ad 182: size_t e_ucsize; /* size of ucontext_t */
1.236.2.4! yamt 183: void (*e_startlwp)(void *);
1.40 christos 184: };
185:
1.197 perry 186: /*
1.127 manu 187: * Emulation miscelaneous flags
188: */
1.122 lukem 189: #define EMUL_HAS_SYS___syscall 0x001 /* Has SYS___syscall */
1.114 mycroft 190:
1.40 christos 191: /*
1.29 cgd 192: * Description of a process.
193: *
194: * This structure contains the information needed to manage a thread of
195: * control, known in UN*X as a process; it has references to substructures
196: * containing descriptions of things that the process uses, but may share
197: * with related processes. The process structure and the substructures
198: * are always addressible except for those marked "(PROC ONLY)" below,
199: * which might be addressible only on a processor on which the process
200: * is running.
1.175 dsl 201: *
1.223 ad 202: * Field markings and the corresponding locks (not yet fully implemented,
203: * more a statement of intent):
204: *
1.233 ad 205: * k: ktrace_mutex
206: * m: proclist_mutex
1.223 ad 207: * l: proclist_lock
1.233 ad 208: * s: p_smutex
209: * t: p_stmutex
210: * p: p_mutex
211: * r: p_rasmutex
212: * (: unlocked, stable
1.29 cgd 213: */
1.122 lukem 214: struct proc {
1.233 ad 215: LIST_ENTRY(proc) p_list; /* l, m: List of all processes */
1.122 lukem 216:
1.233 ad 217: kmutex_t p_rasmutex; /* :: RAS mutex */
218: kmutex_t p_mutex; /* :: general mutex */
219: kmutex_t p_smutex; /* :: mutex on scheduling state */
220: kmutex_t p_stmutex; /* :: mutex on profiling state */
221: kcondvar_t p_refcv; /* p: reference count CV */
222: kcondvar_t p_waitcv; /* s: wait, stop CV on children */
223: kcondvar_t p_lwpcv; /* s: wait, stop CV on LWPs */
224: int p_refcnt; /* p: ref count for procfs etc */
225:
1.122 lukem 226: /* Substructures: */
1.233 ad 227: struct kauth_cred *p_cred; /* p: Master copy of credentials */
228: struct filedesc *p_fd; /* Ptr to open files structure */
229: struct cwdinfo *p_cwdi; /* cdir/rdir/cmask info */
230: struct pstats *p_stats; /* Accounting/stats (PROC ONLY) */
231: struct plimit *p_limit; /* Process limits */
232: struct vmspace *p_vmspace; /* Address space */
233: struct sigacts *p_sigacts; /* Process sigactions */
1.29 cgd 234:
1.228 thorpej 235: specificdata_reference
236: p_specdataref; /* subsystem proc-specific data */
237:
1.233 ad 238: int p_exitsig; /* l: signal to send to parent on exit */
239: int p_flag; /* p: P_* flags */
240: int p_sflag; /* s: PS_* flags */
241: int p_slflag; /* s, l: PSL_* flags */
242: int p_lflag; /* l: PL_* flags */
243: int p_stflag; /* t: PST_* flags */
244: char p_stat; /* s: S* process status. */
1.122 lukem 245: char p_pad1[3];
246:
1.233 ad 247: pid_t p_pid; /* (: Process identifier. */
1.176 dsl 248: LIST_ENTRY(proc) p_pglist; /* l: List of processes in pgrp. */
249: struct proc *p_pptr; /* l: Pointer to parent process. */
250: LIST_ENTRY(proc) p_sibling; /* l: List of sibling processes. */
1.233 ad 251: LIST_HEAD(, proc) p_children; /* l: List of children. */
252: LIST_HEAD(, lwp) p_lwps; /* s: List of LWPs. */
253: LIST_HEAD(, ras) p_raslist; /* r: List of RAS entries */
1.29 cgd 254:
1.153 thorpej 255: /* The following fields are all zeroed upon creation in fork. */
256: #define p_startzero p_nlwps
257:
1.233 ad 258: int p_nlwps; /* s: Number of LWPs */
259: int p_nzlwps; /* s: Number of zombie LWPs */
260: int p_nrlwps; /* s: Number running/sleeping LWPs */
261: int p_nlwpwait; /* s: Number of LWPs in lwp_wait1() */
262: int p_ndlwps; /* s: Number of detached LWPs */
263: int p_nlwpid; /* s: Next LWP ID */
264: u_int p_nstopchild; /* m: Count of stopped/dead children */
265: u_int p_waited; /* m: parent has waited on child */
266: struct lwp *p_zomblwp; /* s: detached LWP to be reaped */
1.29 cgd 267:
1.153 thorpej 268: /* scheduling */
1.233 ad 269: fixpt_t p_estcpu; /* t: Time averaged value of p_cpticks XXX belongs in p_startcopy section */
1.210 yamt 270: fixpt_t p_estcpu_inherited;
271: unsigned int p_forktime;
1.233 ad 272: int p_cpticks; /* t: Ticks of CPU time */
273: fixpt_t p_pctcpu; /* t: %cpu for this process during p_swtime */
1.197 perry 274:
1.233 ad 275: struct proc *p_opptr; /* l: save parent during ptrace. */
276: struct ptimers *p_timers; /* Timers: real, virtual, profiling */
277: struct timeval p_rtime; /* s: real time */
278: u_quad_t p_uticks; /* t: Statclock hits in user mode */
279: u_quad_t p_sticks; /* t: Statclock hits in system mode */
280: u_quad_t p_iticks; /* t: Statclock hits processing intr */
281:
282: int p_traceflag; /* k: Kernel trace points */
283: void *p_tracep; /* k: Trace private data */
284: void *p_systrace; /* Back pointer to systrace */
285:
286: struct vnode *p_textvp; /* Vnode of executable */
287:
1.235 ad 288: void (*p_userret)(void);/* p: return-to-user hook */
1.233 ad 289: const struct emul *p_emul; /* Emulation information */
290: void *p_emuldata; /* Per-process emulation data, or NULL.
291: * Malloc type M_EMULDATA */
292: const struct execsw *p_execsw; /* Exec package information */
293: struct klist p_klist; /* Knotes attached to this process */
1.197 perry 294:
1.233 ad 295: LIST_HEAD(, lwp) p_sigwaiters; /* s: LWPs waiting for signals */
296: sigpend_t p_sigpend; /* s: pending signals */
1.29 cgd 297:
1.122 lukem 298: /*
299: * End area that is zeroed on creation
300: */
1.29 cgd 301: #define p_endzero p_startcopy
302:
1.122 lukem 303: /*
304: * The following fields are all copied upon creation in fork.
305: */
1.233 ad 306: #define p_startcopy p_sigctx
1.122 lukem 307:
1.233 ad 308: struct sigctx p_sigctx; /* s: Shared signal state */
1.29 cgd 309:
1.233 ad 310: u_char p_nice; /* s: Process "nice" value */
311: char p_comm[MAXCOMLEN+1];
312: /* p: basename of last exec file */
313: struct pgrp *p_pgrp; /* l: Pointer to process group */
314:
315: struct ps_strings *p_psstr; /* (: address of process's ps_strings */
316: size_t p_psargv; /* (: offset of ps_argvstr in above */
317: size_t p_psnargv; /* (: offset of ps_nargvstr in above */
318: size_t p_psenv; /* (: offset of ps_envstr in above */
319: size_t p_psnenv; /* (: offset of ps_nenvstr in above */
1.29 cgd 320:
1.197 perry 321: /*
1.122 lukem 322: * End area that is copied on creation
323: */
1.153 thorpej 324: #define p_endcopy p_xstat
1.122 lukem 325:
1.233 ad 326: u_short p_xstat; /* s: Exit status for wait; also stop signal */
1.223 ad 327: u_short p_acflag; /* p: Acc. flags; see struct lwp also */
1.233 ad 328: struct rusage *p_ru; /* Exit information. XXX */
329: struct mdproc p_md; /* Any machine-dependent fields */
1.29 cgd 330: };
331:
1.233 ad 332: #define p_rlimit p_limit->pl_rlimit
1.29 cgd 333: #define p_session p_pgrp->pg_session
334: #define p_pgid p_pgrp->pg_id
335:
1.91 thorpej 336: /*
337: * Status values.
338: */
1.122 lukem 339: #define SIDL 1 /* Process being created by fork */
1.153 thorpej 340: #define SACTIVE 2 /* Process is not stopped */
1.233 ad 341: #define SDYING 3 /* About to die */
1.122 lukem 342: #define SSTOP 4 /* Process debugging or suspension */
343: #define SZOMB 5 /* Awaiting collection by parent */
1.233 ad 344: #define SDEAD 6 /* Almost a zombie */
1.79 thorpej 345:
1.233 ad 346: #define P_ZOMBIE(p) \
347: ((p)->p_stat == SZOMB || (p)->p_stat == SDYING || (p)->p_stat == SDEAD)
1.29 cgd 348:
1.233 ad 349: /*
350: * These flags are kept in p_flag and are protected by p_mutex. Access from
351: * process context only.
352: */
1.236.2.4! yamt 353: #define PK_ADVLOCK 0x00000001 /* Process may hold a POSIX advisory lock */
! 354: #define PK_SYSTEM 0x00000002 /* System process (kthread) */
! 355: #define PK_SUGID 0x00000100 /* Had set id privileges since last exec */
! 356: #define PK_EXEC 0x00004000 /* Process called exec */
! 357: #define PK_NOCLDWAIT 0x00020000 /* No zombies if child dies */
! 358: #define PK_32 0x00040000 /* 32-bit process (used on 64-bit kernels) */
! 359: #define PK_CLDSIGIGN 0x00080000 /* Process is ignoring SIGCHLD */
! 360: #define PK_SYSTRACE 0x00200000 /* Process system call tracing active */
! 361: #define PK_PAXMPROTECT 0x08000000 /* Explicitly enable PaX MPROTECT */
! 362: #define PK_PAXNOMPROTECT 0x10000000 /* Explicitly disable PaX MPROTECT */
! 363: #define PK_MARKER 0x80000000 /* Is a dummy marker process */
1.29 cgd 364:
1.233 ad 365: /*
366: * These flags are kept in p_sflag and are protected by p_smutex. Access from
367: * process context or interrupt context.
368: */
369: #define PS_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */
370: #define PS_PPWAIT 0x00000010 /* Parent is waiting for child exec/exit */
371: #define PS_WCORE 0x00001000 /* Process needs to dump core */
372: #define PS_WEXIT 0x00002000 /* Working on exiting */
373: #define PS_STOPFORK 0x00800000 /* Child will be stopped on fork(2) */
374: #define PS_STOPEXEC 0x01000000 /* Will be stopped on exec(2) */
375: #define PS_STOPEXIT 0x02000000 /* Will be stopped at process exit */
376: #define PS_NOTIFYSTOP 0x10000000 /* Notify parent of successful STOP */
377: #define PS_ORPHANPG 0x20000000 /* Member of an orphaned pgrp */
378: #define PS_STOPPING 0x80000000 /* Transitioning SACTIVE -> SSTOP */
379:
380: /*
381: * These flags are kept in p_sflag and are protected by the proclist_lock
382: * and p_smutex. Access from process context or interrupt context.
383: */
384: #define PSL_TRACED 0x00000800 /* Debugged process being traced */
385: #define PSL_FSTRACE 0x00010000 /* Debugger process being traced by procfs */
386: #define PSL_CHTRACED 0x00400000 /* Child has been traced & reparented */
387: #define PSL_SYSCALL 0x04000000 /* process has PT_SYSCALL enabled */
388:
389: /*
390: * Kept in p_stflag and protected by p_stmutex.
391: */
392: #define PST_PROFIL 0x00000020 /* Has started profiling */
393:
394: /*
395: * The final set are protected by the proclist_lock. Access
396: * from process context only.
397: */
398: #define PL_CONTROLT 0x00000002 /* Has a controlling terminal */
1.219 christos 399:
1.29 cgd 400: /*
1.78 thorpej 401: * Macro to compute the exit signal to be delivered.
1.76 thorpej 402: */
1.233 ad 403: #define P_EXITSIG(p) \
404: (((p)->p_slflag & (PSL_TRACED|PSL_FSTRACE)) ? SIGCHLD : p->p_exitsig)
1.76 thorpej 405:
1.122 lukem 406: LIST_HEAD(proclist, proc); /* A list of processes */
1.64 thorpej 407:
408: /*
409: * This structure associates a proclist with its lock.
410: */
411: struct proclist_desc {
1.122 lukem 412: struct proclist *pd_list; /* The list */
1.64 thorpej 413: /*
414: * XXX Add a pointer to the proclist's lock eventually.
415: */
416: };
417:
1.38 jtc 418: #ifdef _KERNEL
1.156 thorpej 419: #include <sys/mallocvar.h>
420: MALLOC_DECLARE(M_EMULDATA);
421: MALLOC_DECLARE(M_PROC);
422: MALLOC_DECLARE(M_SESSION);
1.208 simonb 423: MALLOC_DECLARE(M_SUBPROC); /* XXX - only used by sparc/sparc64 */
1.156 thorpej 424:
1.29 cgd 425: /*
1.162 dsl 426: * We use process IDs <= PID_MAX until there are > 16k processes.
427: * NO_PGID is used to represent "no process group" for a tty.
1.29 cgd 428: */
429: #define PID_MAX 30000
1.163 jdolecek 430: #define NO_PGID ((pid_t)-1)
1.29 cgd 431:
1.122 lukem 432: #define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
1.29 cgd 433: #define SESSHOLD(s) ((s)->s_count++)
1.122 lukem 434: #define SESSRELE(s) \
435: do { \
1.29 cgd 436: if (--(s)->s_count == 0) \
1.162 dsl 437: sessdelete(s); \
1.126 lukem 438: } while (/* CONSTCOND */ 0)
1.29 cgd 439:
1.54 thorpej 440:
441: /*
442: * Flags passed to fork1().
443: */
1.122 lukem 444: #define FORK_PPWAIT 0x01 /* Block parent until child exit */
445: #define FORK_SHAREVM 0x02 /* Share vmspace with parent */
446: #define FORK_SHARECWD 0x04 /* Share cdir/rdir/cmask */
447: #define FORK_SHAREFILES 0x08 /* Share file descriptors */
448: #define FORK_SHARESIGS 0x10 /* Share signal actions */
1.141 pooka 449: #define FORK_NOWAIT 0x20 /* Make init the parent of the child */
1.143 pooka 450: #define FORK_CLEANFILES 0x40 /* Start with a clean descriptor set */
1.233 ad 451: #define FORK_SYSTEM 0x80 /* Fork a kernel thread */
1.41 mycroft 452:
1.67 pk 453: /*
1.93 thorpej 454: * Allow machine-dependent code to override curproc in <machine/cpu.h> for
1.83 thorpej 455: * its own convenience. Otherwise, we declare it as appropriate.
1.67 pk 456: */
1.153 thorpej 457: #if !defined(curlwp)
1.83 thorpej 458: #if defined(MULTIPROCESSOR)
1.153 thorpej 459: #define curlwp curcpu()->ci_curlwp /* Current running LWP */
1.83 thorpej 460: #else
1.153 thorpej 461: extern struct lwp *curlwp; /* Current running LWP */
1.83 thorpej 462: #endif /* MULTIPROCESSOR */
463: #endif /* ! curproc */
464:
1.236.2.1 yamt 465: #define CURCPU_IDLE_P() (curlwp == curcpu()->ci_data.cpu_idlelwp)
466:
1.174 yamt 467: static struct proc *__curproc(void);
468:
1.212 perry 469: static __inline struct proc *
1.174 yamt 470: __curproc()
471: {
472: struct lwp *l = curlwp;
473:
474: if (l == NULL)
475: return NULL;
476: return l->l_proc;
477: }
478: #define curproc __curproc()
1.153 thorpej 479:
1.122 lukem 480: extern struct proc proc0; /* Process slot for swapper */
481: extern int nprocs, maxproc; /* Current and max number of procs */
1.213 yamt 482: #define vmspace_kernel() (proc0.p_vmspace)
1.29 cgd 483:
1.233 ad 484: /* Process list locks; see kern_proc.c for locking protocol details */
485: extern krwlock_t proclist_lock;
486: extern kmutex_t proclist_mutex;
1.110 sommerfe 487:
1.122 lukem 488: extern struct proclist allproc; /* List of all processes */
489: extern struct proclist zombproc; /* List of zombie processes */
1.79 thorpej 490:
1.162 dsl 491: extern SLIST_HEAD(deadprocs, proc) deadprocs; /* List of dead processes */
1.79 thorpej 492: extern struct simplelock deadproc_slock;
1.64 thorpej 493:
1.122 lukem 494: extern struct proc *initproc; /* Process slots for init, pager */
1.61 thorpej 495:
1.64 thorpej 496: extern const struct proclist_desc proclists[];
497:
1.122 lukem 498: extern struct pool pcred_pool; /* Memory pool for pcreds */
499: extern struct pool plimit_pool; /* Memory pool for plimits */
1.153 thorpej 500: extern struct pool pstats_pool; /* memory pool for pstats */
1.122 lukem 501: extern struct pool rusage_pool; /* Memory pool for rusages */
1.153 thorpej 502: extern struct pool ptimer_pool; /* Memory pool for ptimers */
1.29 cgd 503:
1.176 dsl 504: struct proc *p_find(pid_t, uint); /* Find process by id */
505: struct pgrp *pg_find(pid_t, uint); /* Find process group by id */
506: /* Flags values for p_find() and pg_find(). */
507: #define PFIND_ZOMBIE 1 /* look for zombies as well */
508: #define PFIND_LOCKED 2 /* proclist locked on entry */
509: #define PFIND_UNLOCK_FAIL 4 /* unlock proclist on failure */
510: #define PFIND_UNLOCK_OK 8 /* unlock proclist on success */
511: #define PFIND_UNLOCK (PFIND_UNLOCK_OK | PFIND_UNLOCK_FAIL)
512: /* For source compatibility. but UNLOCK_OK gives a stale answer... */
513: #define pfind(pid) p_find((pid), PFIND_UNLOCK)
514: #define pgfind(pgid) pg_find((pgid), PFIND_UNLOCK)
1.29 cgd 515:
1.98 thorpej 516: struct simplelock;
1.233 ad 517: int enterpgrp(struct proc *, pid_t, pid_t, int);
518: void leavepgrp(struct proc *);
1.167 itojun 519: void fixjobc(struct proc *, struct pgrp *, int);
520: int inferior(struct proc *, struct proc *);
1.162 dsl 521: void sessdelete(struct session *);
1.152 gmcgarry 522: void yield(void);
1.167 itojun 523: void pgdelete(struct pgrp *);
1.122 lukem 524: void procinit(void);
525: void suspendsched(void);
1.236.2.4! yamt 526: int ltsleep(wchan_t, pri_t, const char *, int,
1.211 perry 527: volatile struct simplelock *);
1.233 ad 528: void wakeup(wchan_t);
529: void wakeup_one(wchan_t);
1.236.2.4! yamt 530: int kpause(const char *, bool, int, kmutex_t *);
1.153 thorpej 531: void exit1(struct lwp *, int);
1.233 ad 532: int find_stopped_child(struct proc *, pid_t, int, struct proc **, int *);
1.162 dsl 533: struct proc *proc_alloc(void);
1.204 junyoung 534: void proc0_init(void);
1.236 ad 535: void proc_free(struct proc *, struct rusage *);
1.162 dsl 536: void proc_free_mem(struct proc *);
1.153 thorpej 537: void exit_lwps(struct lwp *l);
538: int fork1(struct lwp *, int, int, void *, size_t,
1.122 lukem 539: void (*)(void *), void *, register_t *, struct proc **);
1.161 dsl 540: int pgid_in_session(struct proc *, pid_t);
1.153 thorpej 541: void cpu_lwp_fork(struct lwp *, struct lwp *, void *, size_t,
1.122 lukem 542: void (*)(void *), void *);
1.189 matt 543: #ifndef cpu_lwp_free
1.186 jdolecek 544: void cpu_lwp_free(struct lwp *, int);
1.233 ad 545: void cpu_lwp_free2(struct lwp *);
1.189 matt 546: #endif
1.122 lukem 547:
1.202 christos 548: #ifdef __HAVE_SYSCALL_INTERN
549: void syscall_intern(struct proc *);
550: #endif
551:
1.122 lukem 552: void child_return(void *);
553:
1.209 christos 554: int proc_isunder(struct proc *, struct lwp *);
1.233 ad 555: void proc_stop(struct proc *, int, int);
1.122 lukem 556:
1.162 dsl 557: void p_sugid(struct proc *);
1.98 thorpej 558:
1.213 yamt 559: int proc_vmspace_getref(struct proc *, struct vmspace **);
1.236.2.4! yamt 560: void proc_crmod_leave(kauth_cred_t, kauth_cred_t, bool);
1.233 ad 561: void proc_crmod_enter(void);
562: int proc_addref(struct proc *);
563: void proc_delref(struct proc *);
564: void proc_drainrefs(struct proc *);
1.213 yamt 565:
1.228 thorpej 566: int proc_specific_key_create(specificdata_key_t *, specificdata_dtor_t);
567: void proc_specific_key_delete(specificdata_key_t);
1.229 christos 568: void proc_initspecific(struct proc *);
1.230 thorpej 569: void proc_finispecific(struct proc *);
1.228 thorpej 570: void * proc_getspecific(struct proc *, specificdata_key_t);
571: void proc_setspecific(struct proc *, specificdata_key_t, void *);
572:
1.195 yamt 573: int proclist_foreach_call(struct proclist *,
574: int (*)(struct proc *, void *arg), void *);
1.212 perry 575: static __inline struct proc *_proclist_skipmarker(struct proc *);
1.195 yamt 576:
1.212 perry 577: static __inline struct proc *
1.195 yamt 578: _proclist_skipmarker(struct proc *p0)
579: {
580: struct proc *p = p0;
581:
1.236.2.4! yamt 582: while (p != NULL && p->p_flag & PK_MARKER)
1.195 yamt 583: p = LIST_NEXT(p, p_list);
584:
585: return p;
586: }
587: #define PROCLIST_FOREACH(var, head) \
588: for ((var) = LIST_FIRST(head); \
589: ((var) = _proclist_skipmarker(var)) != NULL; \
590: (var) = LIST_NEXT(var, p_list))
591:
1.224 yamt 592: #if defined(LOCKDEBUG)
593: void assert_sleepable(struct simplelock *, const char *);
594: #define ASSERT_SLEEPABLE(lk, msg) assert_sleepable((lk), (msg))
595: #else /* defined(LOCKDEBUG) */
596: #define ASSERT_SLEEPABLE(lk, msg) /* nothing */
597: #endif /* defined(LOCKDEBUG) */
598:
1.122 lukem 599: /* Compatibility with old, non-interlocked tsleep call */
1.98 thorpej 600: #define tsleep(chan, pri, wmesg, timo) \
601: ltsleep(chan, pri, wmesg, timo, NULL)
1.102 thorpej 602:
1.139 yamt 603: #ifdef KSTACK_CHECK_MAGIC
1.154 yamt 604: void kstack_setup_magic(const struct lwp *);
605: void kstack_check_magic(const struct lwp *);
1.139 yamt 606: #endif
607:
608: /*
609: * kernel stack paramaters
610: * XXX require sizeof(struct user)
611: */
612: /* the lowest address of kernel stack */
613: #ifndef KSTACK_LOWEST_ADDR
1.154 yamt 614: #define KSTACK_LOWEST_ADDR(l) ((caddr_t)ALIGN((l)->l_addr + 1))
1.139 yamt 615: #endif
616: /* size of kernel stack */
617: #ifndef KSTACK_SIZE
618: #define KSTACK_SIZE (USPACE - ALIGN(sizeof(struct user)))
1.102 thorpej 619: #endif
1.98 thorpej 620:
1.38 jtc 621: #endif /* _KERNEL */
1.29 cgd 622: #endif /* !_SYS_PROC_H_ */
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