Annotation of src/sys/sys/proc.h, Revision 1.282.4.1
1.282.4.1! bouyer 1: /* $NetBSD: proc.h,v 1.282 2008/10/22 11:14:33 ad Exp $ */
1.233 ad 2:
3: /*-
1.270 ad 4: * Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc.
1.233 ad 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: */
1.29 cgd 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.
1.168 agc 49: * 3. Neither the name of the University nor the names of its contributors
1.29 cgd 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: *
1.59 fvdl 65: * @(#)proc.h 8.15 (Berkeley) 5/19/95
1.29 cgd 66: */
67:
68: #ifndef _SYS_PROC_H_
69: #define _SYS_PROC_H_
1.57 mrg 70:
1.131 mrg 71: #if defined(_KERNEL_OPT)
1.83 thorpej 72: #include "opt_multiprocessor.h"
1.139 yamt 73: #include "opt_kstack.h"
1.224 yamt 74: #include "opt_lockdebug.h"
1.83 thorpej 75: #endif
76:
1.122 lukem 77: #include <machine/proc.h> /* Machine-dependent proc substruct */
1.245 rmind 78: #include <sys/aio.h>
1.233 ad 79: #include <sys/rwlock.h>
1.254 rmind 80: #include <sys/mqueue.h>
1.233 ad 81: #include <sys/mutex.h>
82: #include <sys/condvar.h>
1.153 thorpej 83: #include <sys/lwp.h>
1.32 mycroft 84: #include <sys/queue.h>
1.118 jdolecek 85: #include <sys/signalvar.h>
1.170 christos 86: #include <sys/siginfo.h>
1.147 jdolecek 87: #include <sys/event.h>
1.228 thorpej 88: #include <sys/specificdata.h>
1.29 cgd 89:
1.220 yamt 90: #ifndef _KERNEL
91: #include <sys/time.h>
92: #include <sys/resource.h>
93: #endif
94:
1.29 cgd 95: /*
96: * One structure allocated per session.
97: */
1.122 lukem 98: struct session {
99: int s_count; /* Ref cnt; pgrps in session */
1.159 dsl 100: u_int s_flags;
101: #define S_LOGIN_SET 1 /* s_login set in this session */
1.122 lukem 102: struct proc *s_leader; /* Session leader */
103: struct vnode *s_ttyvp; /* Vnode of controlling terminal */
104: struct tty *s_ttyp; /* Controlling terminal */
105: char s_login[MAXLOGNAME]; /* Setlogin() name */
106: pid_t s_sid; /* Session ID (pid of leader) */
1.29 cgd 107: };
108:
109: /*
110: * One structure allocated per process group.
111: */
1.122 lukem 112: struct pgrp {
113: LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members */
114: struct session *pg_session; /* Pointer to session */
115: pid_t pg_id; /* Pgrp id */
116: int pg_jobc; /*
117: * Number of processes qualifying
118: * pgrp for job control
119: */
1.29 cgd 120: };
121:
122: /*
1.40 christos 123: * One structure allocated per emulation.
124: */
125: struct exec_package;
126: struct ps_strings;
1.144 gmcgarry 127: struct ras;
1.221 elad 128: struct kauth_cred;
1.40 christos 129:
1.122 lukem 130: struct emul {
131: const char *e_name; /* Symbolic name */
132: const char *e_path; /* Extra emulation path (NULL if none)*/
1.130 manu 133: #ifndef __HAVE_MINIMAL_EMUL
1.129 manu 134: int e_flags; /* Miscellaneous flags, see above */
1.116 mycroft 135: /* Syscall handling function */
1.122 lukem 136: const int *e_errno; /* Errno array */
137: int e_nosys; /* Offset of the nosys() syscall */
138: int e_nsysent; /* Number of system call entries */
1.116 mycroft 139: #endif
1.282 ad 140: struct sysent *e_sysent; /* System call array */
1.122 lukem 141: const char * const *e_syscallnames; /* System call name array */
1.120 jdolecek 142: /* Signal sending function */
1.196 perry 143: void (*e_sendsig)(const struct ksiginfo *,
144: const sigset_t *);
1.233 ad 145: void (*e_trapsignal)(struct lwp *, struct ksiginfo *);
1.196 perry 146: int (*e_tracesig)(struct proc *, int);
1.122 lukem 147: char *e_sigcode; /* Start of sigcode */
148: char *e_esigcode; /* End of sigcode */
1.134 jdolecek 149: /* Set registers before execution */
1.169 chs 150: struct uvm_object **e_sigobject;/* shared sigcode object */
1.196 perry 151: void (*e_setregs)(struct lwp *, struct exec_package *,
152: u_long);
1.106 jdolecek 153:
1.112 jdolecek 154: /* Per-process hooks */
1.196 perry 155: void (*e_proc_exec)(struct proc *, struct exec_package *);
156: void (*e_proc_fork)(struct proc *, struct proc *, int);
157: void (*e_proc_exit)(struct proc *);
158: void (*e_lwp_fork)(struct lwp *, struct lwp *);
159: void (*e_lwp_exit)(struct lwp *);
1.112 jdolecek 160:
1.116 mycroft 161: #ifdef __HAVE_SYSCALL_INTERN
1.196 perry 162: void (*e_syscall_intern)(struct proc *);
1.116 mycroft 163: #else
1.196 perry 164: void (*e_syscall)(void);
1.116 mycroft 165: #endif
1.180 atatat 166: /* Emulation specific sysctl data */
167: struct sysctlnode *e_sysctlovly;
1.217 drochner 168: int (*e_fault)(struct proc *, vaddr_t, int);
1.198 fvdl 169:
170: vaddr_t (*e_vm_default_addr)(struct proc *, vaddr_t, vsize_t);
1.200 fvdl 171:
172: /* Emulation-specific hook for userspace page faults */
173: int (*e_usertrap)(struct lwp *, vaddr_t, void *);
1.218 cube 174:
1.281 wrstuden 175: /* SA-related information */
176: const struct sa_emul *e_sa;
177:
1.233 ad 178: size_t e_ucsize; /* size of ucontext_t */
1.239 cube 179: void (*e_startlwp)(void *);
1.40 christos 180: };
181:
1.197 perry 182: /*
1.127 manu 183: * Emulation miscelaneous flags
184: */
1.122 lukem 185: #define EMUL_HAS_SYS___syscall 0x001 /* Has SYS___syscall */
1.114 mycroft 186:
1.40 christos 187: /*
1.29 cgd 188: * Description of a process.
189: *
190: * This structure contains the information needed to manage a thread of
191: * control, known in UN*X as a process; it has references to substructures
192: * containing descriptions of things that the process uses, but may share
193: * with related processes. The process structure and the substructures
194: * are always addressible except for those marked "(PROC ONLY)" below,
195: * which might be addressible only on a processor on which the process
196: * is running.
1.175 dsl 197: *
1.223 ad 198: * Field markings and the corresponding locks (not yet fully implemented,
199: * more a statement of intent):
200: *
1.268 ad 201: * a: p_auxlock
1.233 ad 202: * k: ktrace_mutex
1.272 ad 203: * l: proc_lock
1.233 ad 204: * t: p_stmutex
1.273 ad 205: * p: p_lock
1.270 ad 206: * q: mqlist_mtx
207: * :: unlocked, stable
1.29 cgd 208: */
1.122 lukem 209: struct proc {
1.272 ad 210: LIST_ENTRY(proc) p_list; /* l: List of all processes */
1.122 lukem 211:
1.268 ad 212: kmutex_t p_auxlock; /* :: secondary, longer term lock */
1.273 ad 213: kmutex_t *p_lock; /* :: general mutex */
1.233 ad 214: kmutex_t p_stmutex; /* :: mutex on profiling state */
1.260 ad 215: krwlock_t p_reflock; /* p: lock for debugger, procfs */
1.273 ad 216: kcondvar_t p_waitcv; /* p: wait, stop CV on children */
217: kcondvar_t p_lwpcv; /* p: wait, stop CV on LWPs */
1.233 ad 218:
1.122 lukem 219: /* Substructures: */
1.233 ad 220: struct kauth_cred *p_cred; /* p: Master copy of credentials */
1.270 ad 221: struct filedesc *p_fd; /* :: Ptr to open files structure */
222: struct cwdinfo *p_cwdi; /* :: cdir/rdir/cmask info */
223: struct pstats *p_stats; /* :: Accounting/stats (PROC ONLY) */
224: struct plimit *p_limit; /* :: Process limits */
225: struct vmspace *p_vmspace; /* :: Address space */
226: struct sigacts *p_sigacts; /* :: Process sigactions */
1.245 rmind 227: struct aioproc *p_aio; /* p: Asynchronous I/O data */
1.270 ad 228: u_int p_mqueue_cnt; /* q: Count of open mqueues */
1.228 thorpej 229: specificdata_reference
1.270 ad 230: p_specdataref; /* subsystem proc-specific data */
1.228 thorpej 231:
1.233 ad 232: int p_exitsig; /* l: signal to send to parent on exit */
233: int p_flag; /* p: P_* flags */
1.273 ad 234: int p_sflag; /* p: PS_* flags */
1.233 ad 235: int p_slflag; /* s, l: PSL_* flags */
236: int p_lflag; /* l: PL_* flags */
237: int p_stflag; /* t: PST_* flags */
1.273 ad 238: char p_stat; /* p: S* process status. */
239: char p_trace_enabled;/* p: cached by syscall_intern() */
1.270 ad 240: char p_pad1[2]; /* unused */
1.122 lukem 241:
1.270 ad 242: pid_t p_pid; /* :: Process identifier. */
1.176 dsl 243: LIST_ENTRY(proc) p_pglist; /* l: List of processes in pgrp. */
244: struct proc *p_pptr; /* l: Pointer to parent process. */
245: LIST_ENTRY(proc) p_sibling; /* l: List of sibling processes. */
1.233 ad 246: LIST_HEAD(, proc) p_children; /* l: List of children. */
1.273 ad 247: LIST_HEAD(, lwp) p_lwps; /* p: List of LWPs. */
1.268 ad 248: struct ras *p_raslist; /* a: List of RAS entries */
1.29 cgd 249:
1.153 thorpej 250: /* The following fields are all zeroed upon creation in fork. */
251: #define p_startzero p_nlwps
252:
1.273 ad 253: int p_nlwps; /* p: Number of LWPs */
254: int p_nzlwps; /* p: Number of zombie LWPs */
255: int p_nrlwps; /* p: Number running/sleeping LWPs */
256: int p_nlwpwait; /* p: Number of LWPs in lwp_wait1() */
257: int p_ndlwps; /* p: Number of detached LWPs */
258: int p_nlwpid; /* p: Next LWP ID */
1.272 ad 259: u_int p_nstopchild; /* l: Count of stopped/dead children */
260: u_int p_waited; /* l: parent has waited on child */
1.273 ad 261: struct lwp *p_zomblwp; /* p: detached LWP to be reaped */
1.29 cgd 262:
1.281 wrstuden 263: struct sadata *p_sa; /* p: Scheduler activation info */
264:
1.153 thorpej 265: /* scheduling */
1.273 ad 266: void *p_sched_info; /* p: Scheduler-specific structure */
267: fixpt_t p_estcpu; /* p: Time avg. value of p_cpticks */
268: fixpt_t p_estcpu_inherited; /* p: cpu inherited from children */
1.210 yamt 269: unsigned int p_forktime;
1.273 ad 270: fixpt_t p_pctcpu; /* p: %cpu from dead LWPs */
1.197 perry 271:
1.233 ad 272: struct proc *p_opptr; /* l: save parent during ptrace. */
273: struct ptimers *p_timers; /* Timers: real, virtual, profiling */
1.273 ad 274: struct bintime p_rtime; /* p: real time */
1.233 ad 275: u_quad_t p_uticks; /* t: Statclock hits in user mode */
276: u_quad_t p_sticks; /* t: Statclock hits in system mode */
277: u_quad_t p_iticks; /* t: Statclock hits processing intr */
278:
279: int p_traceflag; /* k: Kernel trace points */
1.281 wrstuden 280: int p_timerpend; /* p: Pending itimer to run */
1.233 ad 281: void *p_tracep; /* k: Trace private data */
1.270 ad 282: struct vnode *p_textvp; /* :: Vnode of executable */
1.233 ad 283:
1.235 ad 284: void (*p_userret)(void);/* p: return-to-user hook */
1.270 ad 285: const struct emul *p_emul; /* :: emulation information */
286: void *p_emuldata; /* :: per-proc emul data, or NULL */
287: const struct execsw *p_execsw; /* :: exec package information */
288: struct klist p_klist; /* p: knotes attached to proc */
1.197 perry 289:
1.273 ad 290: LIST_HEAD(, lwp) p_sigwaiters; /* p: LWPs waiting for signals */
1.281 wrstuden 291: sigstore_t p_sigstore; /* p: process-wide signal state */
1.273 ad 292: sigpend_t p_sigpend; /* p: pending signals */
1.270 ad 293: struct lcproc *p_lwpctl; /* p, a: _lwp_ctl() information */
1.277 ad 294: pid_t p_ppid; /* :: cached parent pid */
1.29 cgd 295:
1.122 lukem 296: /*
297: * End area that is zeroed on creation
298: */
1.29 cgd 299: #define p_endzero p_startcopy
300:
1.122 lukem 301: /*
302: * The following fields are all copied upon creation in fork.
303: */
1.233 ad 304: #define p_startcopy p_sigctx
1.122 lukem 305:
1.273 ad 306: struct sigctx p_sigctx; /* p: Shared signal state */
1.29 cgd 307:
1.273 ad 308: u_char p_nice; /* p: Process "nice" value */
1.233 ad 309: char p_comm[MAXCOMLEN+1];
310: /* p: basename of last exec file */
311: struct pgrp *p_pgrp; /* l: Pointer to process group */
312:
1.270 ad 313: struct ps_strings *p_psstr; /* :: address of process's ps_strings */
314: size_t p_psargv; /* :: offset of ps_argvstr in above */
315: size_t p_psnargv; /* :: offset of ps_nargvstr in above */
316: size_t p_psenv; /* :: offset of ps_envstr in above */
317: size_t p_psnenv; /* :: offset of ps_nenvstr in above */
1.279 ad 318: u_int p_pax; /* :: PAX flags */
1.29 cgd 319:
1.197 perry 320: /*
1.122 lukem 321: * End area that is copied on creation
322: */
1.153 thorpej 323: #define p_endcopy p_xstat
1.122 lukem 324:
1.273 ad 325: u_short p_xstat; /* p: Exit status for wait; also stop signal */
1.223 ad 326: u_short p_acflag; /* p: Acc. flags; see struct lwp also */
1.270 ad 327: struct mdproc p_md; /* p: Any machine-dependent fields */
328: vaddr_t p_stackbase; /* :: ASLR randomized stack base */
1.29 cgd 329: };
330:
1.233 ad 331: #define p_rlimit p_limit->pl_rlimit
1.29 cgd 332: #define p_session p_pgrp->pg_session
333: #define p_pgid p_pgrp->pg_id
334:
1.91 thorpej 335: /*
336: * Status values.
337: */
1.122 lukem 338: #define SIDL 1 /* Process being created by fork */
1.153 thorpej 339: #define SACTIVE 2 /* Process is not stopped */
1.233 ad 340: #define SDYING 3 /* About to die */
1.122 lukem 341: #define SSTOP 4 /* Process debugging or suspension */
342: #define SZOMB 5 /* Awaiting collection by parent */
1.233 ad 343: #define SDEAD 6 /* Almost a zombie */
1.79 thorpej 344:
1.233 ad 345: #define P_ZOMBIE(p) \
346: ((p)->p_stat == SZOMB || (p)->p_stat == SDYING || (p)->p_stat == SDEAD)
1.29 cgd 347:
1.233 ad 348: /*
1.273 ad 349: * These flags are kept in p_flag and are protected by p_lock. Access from
1.233 ad 350: * process context only.
351: */
1.237 pavel 352: #define PK_ADVLOCK 0x00000001 /* Process may hold a POSIX advisory lock */
353: #define PK_SYSTEM 0x00000002 /* System process (kthread) */
1.274 ad 354: #define PK_SYSVSEM 0x00000004 /* Used SysV semaphores */
1.237 pavel 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_MARKER 0x80000000 /* Is a dummy marker process */
1.29 cgd 361:
1.233 ad 362: /*
1.273 ad 363: * These flags are kept in p_sflag and are protected by p_lock. Access from
364: * process context only.
1.233 ad 365: */
366: #define PS_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */
1.281 wrstuden 367: #define PS_SA 0x00000400 /* Process using scheduler activations */
1.233 ad 368: #define PS_WCORE 0x00001000 /* Process needs to dump core */
369: #define PS_WEXIT 0x00002000 /* Working on exiting */
370: #define PS_STOPFORK 0x00800000 /* Child will be stopped on fork(2) */
371: #define PS_STOPEXEC 0x01000000 /* Will be stopped on exec(2) */
372: #define PS_STOPEXIT 0x02000000 /* Will be stopped at process exit */
373: #define PS_NOTIFYSTOP 0x10000000 /* Notify parent of successful STOP */
1.281 wrstuden 374: #define PS_NOSA 0x40000000 /* Do not enable SA */
1.233 ad 375: #define PS_STOPPING 0x80000000 /* Transitioning SACTIVE -> SSTOP */
376:
377: /*
1.272 ad 378: * These flags are kept in p_sflag and are protected by the proc_lock
1.273 ad 379: * and p_lock. Access from process context only.
1.233 ad 380: */
381: #define PSL_TRACED 0x00000800 /* Debugged process being traced */
382: #define PSL_FSTRACE 0x00010000 /* Debugger process being traced by procfs */
383: #define PSL_CHTRACED 0x00400000 /* Child has been traced & reparented */
384: #define PSL_SYSCALL 0x04000000 /* process has PT_SYSCALL enabled */
1.282.4.1! bouyer 385: #define PSL_SYSCALLEMU 0x08000000 /* cancel in-progress syscall */
1.233 ad 386:
387: /*
388: * Kept in p_stflag and protected by p_stmutex.
389: */
390: #define PST_PROFIL 0x00000020 /* Has started profiling */
391:
392: /*
1.272 ad 393: * The final set are protected by the proc_lock. Access
1.233 ad 394: * from process context only.
395: */
396: #define PL_CONTROLT 0x00000002 /* Has a controlling terminal */
1.280 ad 397: #define PL_PPWAIT 0x00000010 /* Parent is waiting for child exec/exit */
1.272 ad 398: #define PL_ORPHANPG 0x20000000 /* Member of an orphaned pgrp */
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: */
1.255 dsl 444: #define FORK_PPWAIT 0x0001 /* Block parent until child exit */
445: #define FORK_SHAREVM 0x0002 /* Share vmspace with parent */
446: #define FORK_SHARECWD 0x0004 /* Share cdir/rdir/cmask */
447: #define FORK_SHAREFILES 0x0008 /* Share file descriptors */
448: #define FORK_SHARESIGS 0x0010 /* Share signal actions */
449: #define FORK_NOWAIT 0x0020 /* Make init the parent of the child */
450: #define FORK_CLEANFILES 0x0040 /* Start with a clean descriptor set */
451: #define FORK_SYSTEM 0x0080 /* Fork a kernel thread */
452: #define FORK_SHARELIMIT 0x0100 /* Share rlimit values */
1.41 mycroft 453:
1.122 lukem 454: extern struct proc proc0; /* Process slot for swapper */
1.262 ad 455: extern u_int nprocs; /* Current number of procs */
456: extern int maxproc; /* Max number of procs */
1.213 yamt 457: #define vmspace_kernel() (proc0.p_vmspace)
1.29 cgd 458:
1.272 ad 459: extern kmutex_t *proc_lock;
1.122 lukem 460: extern struct proclist allproc; /* List of all processes */
461: extern struct proclist zombproc; /* List of zombie processes */
1.79 thorpej 462:
1.162 dsl 463: extern SLIST_HEAD(deadprocs, proc) deadprocs; /* List of dead processes */
1.79 thorpej 464: extern struct simplelock deadproc_slock;
1.64 thorpej 465:
1.122 lukem 466: extern struct proc *initproc; /* Process slots for init, pager */
1.61 thorpej 467:
1.64 thorpej 468: extern const struct proclist_desc proclists[];
469:
1.153 thorpej 470: extern struct pool ptimer_pool; /* Memory pool for ptimers */
1.29 cgd 471:
1.176 dsl 472: struct proc *p_find(pid_t, uint); /* Find process by id */
473: struct pgrp *pg_find(pid_t, uint); /* Find process group by id */
474: /* Flags values for p_find() and pg_find(). */
475: #define PFIND_ZOMBIE 1 /* look for zombies as well */
476: #define PFIND_LOCKED 2 /* proclist locked on entry */
477: #define PFIND_UNLOCK_FAIL 4 /* unlock proclist on failure */
478: #define PFIND_UNLOCK_OK 8 /* unlock proclist on success */
479: #define PFIND_UNLOCK (PFIND_UNLOCK_OK | PFIND_UNLOCK_FAIL)
480: /* For source compatibility. but UNLOCK_OK gives a stale answer... */
481: #define pfind(pid) p_find((pid), PFIND_UNLOCK)
482: #define pgfind(pgid) pg_find((pgid), PFIND_UNLOCK)
1.29 cgd 483:
1.98 thorpej 484: struct simplelock;
1.233 ad 485: int enterpgrp(struct proc *, pid_t, pid_t, int);
486: void leavepgrp(struct proc *);
1.167 itojun 487: void fixjobc(struct proc *, struct pgrp *, int);
488: int inferior(struct proc *, struct proc *);
1.162 dsl 489: void sessdelete(struct session *);
1.152 gmcgarry 490: void yield(void);
1.167 itojun 491: void pgdelete(struct pgrp *);
1.122 lukem 492: void procinit(void);
493: void suspendsched(void);
1.244 ad 494: int ltsleep(wchan_t, pri_t, const char *, int, volatile struct simplelock *);
495: int mtsleep(wchan_t, pri_t, const char *, int, kmutex_t *);
1.233 ad 496: void wakeup(wchan_t);
497: void wakeup_one(wchan_t);
1.240 thorpej 498: int kpause(const char *, bool, int, kmutex_t *);
1.264 perry 499: void exit1(struct lwp *, int) __dead;
1.247 dsl 500: int do_sys_wait(struct lwp *, int *, int *, int, struct rusage *, int *);
1.162 dsl 501: struct proc *proc_alloc(void);
1.204 junyoung 502: void proc0_init(void);
1.256 ad 503: void proc_free_pid(struct proc *);
1.265 ad 504: void proc_free_mem(struct proc *);
1.153 thorpej 505: void exit_lwps(struct lwp *l);
506: int fork1(struct lwp *, int, int, void *, size_t,
1.122 lukem 507: void (*)(void *), void *, register_t *, struct proc **);
1.161 dsl 508: int pgid_in_session(struct proc *, pid_t);
1.153 thorpej 509: void cpu_lwp_fork(struct lwp *, struct lwp *, void *, size_t,
1.122 lukem 510: void (*)(void *), void *);
1.189 matt 511: #ifndef cpu_lwp_free
1.186 jdolecek 512: void cpu_lwp_free(struct lwp *, int);
1.250 yamt 513: #ifndef cpu_lwp_free2
1.233 ad 514: void cpu_lwp_free2(struct lwp *);
1.189 matt 515: #endif
1.250 yamt 516: #endif
1.122 lukem 517:
1.202 christos 518: #ifdef __HAVE_SYSCALL_INTERN
519: void syscall_intern(struct proc *);
520: #endif
521:
1.122 lukem 522: void child_return(void *);
523:
1.209 christos 524: int proc_isunder(struct proc *, struct lwp *);
1.233 ad 525: void proc_stop(struct proc *, int, int);
1.122 lukem 526:
1.162 dsl 527: void p_sugid(struct proc *);
1.98 thorpej 528:
1.213 yamt 529: int proc_vmspace_getref(struct proc *, struct vmspace **);
1.240 thorpej 530: void proc_crmod_leave(kauth_cred_t, kauth_cred_t, bool);
1.233 ad 531: void proc_crmod_enter(void);
532: int proc_addref(struct proc *);
533: void proc_delref(struct proc *);
534: void proc_drainrefs(struct proc *);
1.213 yamt 535:
1.228 thorpej 536: int proc_specific_key_create(specificdata_key_t *, specificdata_dtor_t);
537: void proc_specific_key_delete(specificdata_key_t);
1.229 christos 538: void proc_initspecific(struct proc *);
1.230 thorpej 539: void proc_finispecific(struct proc *);
1.228 thorpej 540: void * proc_getspecific(struct proc *, specificdata_key_t);
541: void proc_setspecific(struct proc *, specificdata_key_t, void *);
542:
1.195 yamt 543: int proclist_foreach_call(struct proclist *,
544: int (*)(struct proc *, void *arg), void *);
1.212 perry 545: static __inline struct proc *_proclist_skipmarker(struct proc *);
1.195 yamt 546:
1.212 perry 547: static __inline struct proc *
1.195 yamt 548: _proclist_skipmarker(struct proc *p0)
549: {
550: struct proc *p = p0;
551:
1.237 pavel 552: while (p != NULL && p->p_flag & PK_MARKER)
1.195 yamt 553: p = LIST_NEXT(p, p_list);
554:
555: return p;
556: }
557: #define PROCLIST_FOREACH(var, head) \
558: for ((var) = LIST_FIRST(head); \
559: ((var) = _proclist_skipmarker(var)) != NULL; \
560: (var) = LIST_NEXT(var, p_list))
561:
1.122 lukem 562: /* Compatibility with old, non-interlocked tsleep call */
1.98 thorpej 563: #define tsleep(chan, pri, wmesg, timo) \
564: ltsleep(chan, pri, wmesg, timo, NULL)
1.102 thorpej 565:
1.139 yamt 566: #ifdef KSTACK_CHECK_MAGIC
1.154 yamt 567: void kstack_setup_magic(const struct lwp *);
568: void kstack_check_magic(const struct lwp *);
1.139 yamt 569: #endif
570:
571: /*
572: * kernel stack paramaters
573: * XXX require sizeof(struct user)
574: */
575: /* the lowest address of kernel stack */
576: #ifndef KSTACK_LOWEST_ADDR
1.242 christos 577: #define KSTACK_LOWEST_ADDR(l) ((void *)ALIGN((l)->l_addr + 1))
1.139 yamt 578: #endif
579: /* size of kernel stack */
580: #ifndef KSTACK_SIZE
581: #define KSTACK_SIZE (USPACE - ALIGN(sizeof(struct user)))
1.102 thorpej 582: #endif
1.98 thorpej 583:
1.38 jtc 584: #endif /* _KERNEL */
1.29 cgd 585: #endif /* !_SYS_PROC_H_ */
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