SecBSD
/
src
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
src/sys/sys/proc.h

638 lines
24 KiB
C
Raw Permalink Blame History

/* $OpenBSD: proc.h,v 1.360 2024/04/18 10:29:39 claudio Exp $ */
/* $NetBSD: proc.h,v 1.44 1996/04/22 01:23:21 christos Exp $ */
/*-
* Copyright (c) 1986, 1989, 1991, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)proc.h 8.8 (Berkeley) 1/21/94
*/
#ifndef _SYS_PROC_H_
#define _SYS_PROC_H_
#include <machine/proc.h> /* Machine-dependent proc substruct. */
#include <sys/selinfo.h> /* For struct selinfo */
#include <sys/syslimits.h> /* For LOGIN_NAME_MAX */
#include <sys/queue.h>
#include <sys/timeout.h> /* For struct timeout */
#include <sys/event.h> /* For struct klist */
#include <sys/mutex.h> /* For struct mutex */
#include <sys/resource.h> /* For struct rusage */
#include <sys/rwlock.h> /* For struct rwlock */
#include <sys/sigio.h> /* For struct sigio */
#ifdef _KERNEL
#include <sys/atomic.h>
#define __need_process
#endif
/*
* One structure allocated per session.
*/
struct process;
struct session {
int s_count; /* Ref cnt; pgrps in session. */
struct process *s_leader; /* Session leader. */
struct vnode *s_ttyvp; /* Vnode of controlling terminal. */
struct tty *s_ttyp; /* Controlling terminal. */
char s_login[LOGIN_NAME_MAX]; /* Setlogin() name. */
pid_t s_verauthppid;
uid_t s_verauthuid;
struct timeout s_verauthto;
};
void zapverauth(/* struct session */ void *);
/*
* One structure allocated per process group.
*/
struct pgrp {
LIST_ENTRY(pgrp) pg_hash; /* Hash chain. */
LIST_HEAD(, process) pg_members;/* Pointer to pgrp members. */
struct session *pg_session; /* Pointer to session. */
struct sigiolst pg_sigiolst; /* List of sigio structures. */
pid_t pg_id; /* Pgrp id. */
int pg_jobc; /* # procs qualifying pgrp for job control */
};
/*
* time usage: accumulated times in ticks
* Once a second, each thread's immediate counts (p_[usi]ticks) are
* accumulated into these.
*/
struct tusage {
struct timespec tu_runtime; /* Realtime. */
uint64_t tu_uticks; /* Statclock hits in user mode. */
uint64_t tu_sticks; /* Statclock hits in system mode. */
uint64_t tu_iticks; /* Statclock hits processing intr. */
};
/*
* Description of a process.
*
* These structures contain the information needed to manage a thread of
* control, known in UN*X as a process; it has references to substructures
* containing descriptions of things that the process uses, but may share
* with related processes.
*
* struct process is the higher level process containing information
* shared by all threads in a process, while struct proc contains the
* run-time information needed by threads.
*/
#ifdef __need_process
struct futex;
LIST_HEAD(futex_list, futex);
struct proc;
struct tslpentry;
TAILQ_HEAD(tslpqueue, tslpentry);
struct unveil;
struct pinsyscall {
vaddr_t pn_start;
vaddr_t pn_end;
u_int *pn_pins; /* array of offsets indexed by syscall# */
int pn_npins; /* number of entries in table */
};
/*
* Locks used to protect struct members in this file:
* I immutable after creation
* a atomic operations
* K kernel lock
* m this process' `ps_mtx'
* p this process' `ps_lock'
* R rlimit_lock
* S scheduler lock
* T itimer_mtx
*/
struct process {
/*
* ps_mainproc is the original thread in the process.
* It's only still special for the handling of
* some signal and ptrace behaviors that need to be fixed.
*/
struct proc *ps_mainproc;
struct ucred *ps_ucred; /* Process owner's identity. */
LIST_ENTRY(process) ps_list; /* List of all processes. */
TAILQ_HEAD(,proc) ps_threads; /* [K|S] Threads in this process. */
LIST_ENTRY(process) ps_pglist; /* List of processes in pgrp. */
struct process *ps_pptr; /* Pointer to parent process. */
LIST_ENTRY(process) ps_sibling; /* List of sibling processes. */
LIST_HEAD(, process) ps_children;/* Pointer to list of children. */
LIST_ENTRY(process) ps_hash; /* Hash chain. */
/*
* An orphan is the child that has been re-parented to the
* debugger as a result of attaching to it. Need to keep
* track of them for parent to be able to collect the exit
* status of what used to be children.
*/
LIST_ENTRY(process) ps_orphan; /* List of orphan processes. */
LIST_HEAD(, process) ps_orphans;/* Pointer to list of orphans. */
struct sigiolst ps_sigiolst; /* List of sigio structures. */
struct sigacts *ps_sigacts; /* [I] Signal actions, state */
struct vnode *ps_textvp; /* Vnode of executable. */
struct filedesc *ps_fd; /* Ptr to open files structure */
struct vmspace *ps_vmspace; /* Address space */
pid_t ps_pid; /* Process identifier. */
struct futex_list ps_ftlist; /* futexes attached to this process */
struct tslpqueue ps_tslpqueue; /* [p] queue of threads in thrsleep */
struct rwlock ps_lock; /* per-process rwlock */
struct mutex ps_mtx; /* per-process mutex */
/* The following fields are all zeroed upon creation in process_new. */
#define ps_startzero ps_klist
struct klist ps_klist; /* knotes attached to this process */
u_int ps_flags; /* [a] PS_* flags. */
int ps_siglist; /* Signals pending for the process. */
struct proc *ps_single; /* [S] Thread for single-threading. */
u_int ps_singlecount; /* [a] Not yet suspended threads. */
int ps_traceflag; /* Kernel trace points. */
struct vnode *ps_tracevp; /* Trace to vnode. */
struct ucred *ps_tracecred; /* Creds for writing trace */
u_int ps_xexit; /* Exit status for wait */
int ps_xsig; /* Stopping or killing signal */
pid_t ps_ppid; /* [a] Cached parent pid */
pid_t ps_oppid; /* [a] Save parent pid during ptrace. */
int ps_ptmask; /* Ptrace event mask */
struct ptrace_state *ps_ptstat;/* Ptrace state */
struct rusage *ps_ru; /* sum of stats for dead threads. */
struct tusage ps_tu; /* accumulated times. */
struct rusage ps_cru; /* sum of stats for reaped children */
struct itimerspec ps_timer[3]; /* [m] ITIMER_REAL timer */
/* [T] ITIMER_{VIRTUAL,PROF} timers */
struct timeout ps_rucheck_to; /* [] resource limit check timer */
time_t ps_nextxcpu; /* when to send next SIGXCPU, */
/* in seconds of process runtime */
u_int64_t ps_wxcounter;
struct unveil *ps_uvpaths; /* unveil vnodes and names */
ssize_t ps_uvvcount; /* count of unveil vnodes held */
size_t ps_uvncount; /* count of unveil names allocated */
int ps_uvdone; /* no more unveil is permitted */
/* End area that is zeroed on creation. */
#define ps_endzero ps_startcopy
/* The following fields are all copied upon creation in process_new. */
#define ps_startcopy ps_limit
struct plimit *ps_limit; /* [m,R] Process limits. */
struct pgrp *ps_pgrp; /* Pointer to process group. */
char ps_comm[_MAXCOMLEN]; /* command name, incl NUL */
vaddr_t ps_strings; /* User pointers to argv/env */
vaddr_t ps_auxinfo; /* User pointer to auxinfo */
vaddr_t ps_timekeep; /* User pointer to timekeep */
vaddr_t ps_sigcode; /* [I] User pointer to signal code */
vaddr_t ps_sigcoderet; /* [I] User ptr to sigreturn retPC */
u_long ps_sigcookie; /* [I] */
u_int ps_rtableid; /* [a] Process routing table/domain. */
char ps_nice; /* Process "nice" value. */
struct uprof { /* profile arguments */
caddr_t pr_base; /* buffer base */
size_t pr_size; /* buffer size */
u_long pr_off; /* pc offset */
u_int pr_scale; /* pc scaling */
} ps_prof;
u_int32_t ps_acflag; /* Accounting flags. */
uint64_t ps_pledge; /* [m] pledge promises */
uint64_t ps_execpledge; /* [m] execpledge promises */
int64_t ps_kbind_cookie; /* [m] */
u_long ps_kbind_addr; /* [m] */
/* an address that can't be in userspace or kernelspace */
#define BOGO_PC (u_long)-1
struct pinsyscall ps_pin; /* static or ld.so */
struct pinsyscall ps_libcpin; /* libc.so, from pinsyscalls(2) */
/* End area that is copied on creation. */
#define ps_endcopy ps_threadcnt
u_int ps_threadcnt; /* Number of threads. */
struct timespec ps_start; /* starting uptime. */
struct timeout ps_realit_to; /* [m] ITIMER_REAL timeout */
};
#define ps_session ps_pgrp->pg_session
#define ps_pgid ps_pgrp->pg_id
#endif /* __need_process */
/*
* These flags are kept in ps_flags.
*/
#define PS_CONTROLT 0x00000001 /* Has a controlling terminal. */
#define PS_EXEC 0x00000002 /* Process called exec. */
#define PS_INEXEC 0x00000004 /* Process is doing an exec right now */
#define PS_EXITING 0x00000008 /* Process is exiting. */
#define PS_SUGID 0x00000010 /* Had set id privs since last exec. */
#define PS_SUGIDEXEC 0x00000020 /* last execve() was set[ug]id */
#define PS_PPWAIT 0x00000040 /* Parent waits for exec/exit. */
#define PS_ISPWAIT 0x00000080 /* Is parent of PPWAIT child. */
#define PS_PROFIL 0x00000100 /* Has started profiling. */
#define PS_TRACED 0x00000200 /* Being ptraced. */
#define PS_WAITED 0x00000400 /* Stopped proc was waited for. */
#define PS_COREDUMP 0x00000800 /* Busy coredumping */
#define PS_SINGLEEXIT 0x00001000 /* Other threads must die. */
#define PS_SINGLEUNWIND 0x00002000 /* Other threads must unwind. */
#define PS_NOZOMBIE 0x00004000 /* No signal or zombie at exit. */
#define PS_STOPPED 0x00008000 /* Just stopped, need sig to parent. */
#define PS_SYSTEM 0x00010000 /* No sigs, stats or swapping. */
#define PS_EMBRYO 0x00020000 /* New process, not yet fledged */
#define PS_ZOMBIE 0x00040000 /* Dead and ready to be waited for */
#define PS_NOBROADCASTKILL 0x00080000 /* Process excluded from kill -1. */
#define PS_PLEDGE 0x00100000 /* Has called pledge(2) */
#define PS_WXNEEDED 0x00200000 /* Process allowed to violate W^X */
#define PS_EXECPLEDGE 0x00400000 /* Has exec pledges */
#define PS_ORPHAN 0x00800000 /* Process is on an orphan list */
#define PS_CHROOT 0x01000000 /* Process is chrooted */
#define PS_NOBTCFI 0x02000000 /* No Branch Target CFI */
#define PS_ITIMER 0x04000000 /* Virtual interval timers running */
#define PS_PIN 0x08000000 /* ld.so or static syscall pin */
#define PS_LIBCPIN 0x10000000 /* libc.so syscall pin */
#define PS_BITS \
("\20" "\01CONTROLT" "\02EXEC" "\03INEXEC" "\04EXITING" "\05SUGID" \
"\06SUGIDEXEC" "\07PPWAIT" "\010ISPWAIT" "\011PROFIL" "\012TRACED" \
"\013WAITED" "\014COREDUMP" "\015SINGLEEXIT" "\016SINGLEUNWIND" \
"\017NOZOMBIE" "\020STOPPED" "\021SYSTEM" "\022EMBRYO" "\023ZOMBIE" \
"\024NOBROADCASTKILL" "\025PLEDGE" "\026WXNEEDED" "\027EXECPLEDGE" \
"\030ORPHAN" "\031CHROOT" "\032NOBTCFI" "\033ITIMER")
struct kcov_dev;
struct lock_list_entry;
struct kqueue;
struct p_inentry {
u_long ie_serial;
vaddr_t ie_start;
vaddr_t ie_end;
};
/*
* Locks used to protect struct members in this file:
* I immutable after creation
* S scheduler lock
* U uidinfolk
* l read only reference, see lim_read_enter()
* o owned (modified only) by this thread
*/
struct proc {
TAILQ_ENTRY(proc) p_runq; /* [S] current run/sleep queue */
LIST_ENTRY(proc) p_list; /* List of all threads. */
struct process *p_p; /* [I] The process of this thread. */
TAILQ_ENTRY(proc) p_thr_link; /* Threads in a process linkage. */
TAILQ_ENTRY(proc) p_fut_link; /* Threads in a futex linkage. */
struct futex *p_futex; /* Current sleeping futex. */
/* substructures: */
struct filedesc *p_fd; /* copy of p_p->ps_fd */
struct vmspace *p_vmspace; /* [I] copy of p_p->ps_vmspace */
struct p_inentry p_spinentry; /* [o] cache for SP check */
int p_flag; /* P_* flags. */
u_char p_spare; /* unused */
char p_stat; /* [S] S* process status. */
u_char p_runpri; /* [S] Runqueue priority */
u_char p_descfd; /* if not 255, fdesc permits this fd */
pid_t p_tid; /* Thread identifier. */
LIST_ENTRY(proc) p_hash; /* Hash chain. */
/* The following fields are all zeroed upon creation in fork. */
#define p_startzero p_dupfd
int p_dupfd; /* Sideways return value from filedescopen. XXX */
/* scheduling */
int p_cpticks; /* Ticks of cpu time. */
const volatile void *p_wchan; /* [S] Sleep address. */
struct timeout p_sleep_to;/* timeout for tsleep() */
const char *p_wmesg; /* [S] Reason for sleep. */
fixpt_t p_pctcpu; /* [S] %cpu for this thread */
u_int p_slptime; /* [S] Time since last blocked. */
u_int p_uticks; /* Statclock hits in user mode. */
u_int p_sticks; /* Statclock hits in system mode. */
u_int p_iticks; /* Statclock hits processing intr. */
struct cpu_info * volatile p_cpu; /* [S] CPU we're running on. */
struct rusage p_ru; /* Statistics */
struct tusage p_tu; /* accumulated times. */
struct plimit *p_limit; /* [l] read ref. of p_p->ps_limit */
struct kcov_dev *p_kd; /* kcov device handle */
struct lock_list_entry *p_sleeplocks; /* WITNESS lock tracking */
struct kqueue *p_kq; /* [o] select/poll queue of evts */
unsigned long p_kq_serial; /* [o] to check against enqueued evts */
int p_siglist; /* [a] Signals arrived & not delivered*/
/* End area that is zeroed on creation. */
#define p_endzero p_startcopy
/* The following fields are all copied upon creation in fork. */
#define p_startcopy p_sigmask
sigset_t p_sigmask; /* [o] Current signal mask */
char p_name[_MAXCOMLEN]; /* thread name, incl NUL */
u_char p_slppri; /* [S] Sleeping priority */
u_char p_usrpri; /* [S] Priority based on p_estcpu & ps_nice */
u_int p_estcpu; /* [S] Time averaged val of p_cpticks */
int p_pledge_syscall; /* Cache of current syscall */
struct ucred *p_ucred; /* [o] cached credentials */
struct sigaltstack p_sigstk; /* sp & on stack state variable */
u_long p_prof_addr; /* tmp storage for profiling addr until AST */
u_long p_prof_ticks; /* tmp storage for profiling ticks until AST */
/* End area that is copied on creation. */
#define p_endcopy p_addr
struct user *p_addr; /* Kernel virtual addr of u-area */
struct mdproc p_md; /* Any machine-dependent fields. */
sigset_t p_oldmask; /* [o] Saved mask from before sigpause */
int p_sisig; /* For core dump/debugger XXX */
union sigval p_sigval; /* For core dump/debugger XXX */
long p_sitrapno; /* For core dump/debugger XXX */
int p_sicode; /* For core dump/debugger XXX */
};
/* Status values. */
#define SIDL 1 /* Thread being created by fork. */
#define SRUN 2 /* Currently runnable. */
#define SSLEEP 3 /* Sleeping on an address. */
#define SSTOP 4 /* Debugging or suspension. */
#define SZOMB 5 /* unused */
#define SDEAD 6 /* Thread is almost gone */
#define SONPROC 7 /* Thread is currently on a CPU. */
#define P_ZOMBIE(p) ((p)->p_stat == SDEAD)
#define P_HASSIBLING(p) ((p)->p_p->ps_threadcnt > 1)
/*
* These flags are per-thread and kept in p_flag
*/
#define P_INKTR 0x00000001 /* In a ktrace op, don't recurse */
#define P_PROFPEND 0x00000002 /* SIGPROF needs to be posted */
#define P_ALRMPEND 0x00000004 /* SIGVTALRM needs to be posted */
#define P_SIGSUSPEND 0x00000008 /* Need to restore before-suspend mask*/
#define P_CANTSLEEP 0x00000010 /* insomniac thread */
#define P_WSLEEP 0x00000020 /* Working on going to sleep. */
#define P_SINTR 0x00000080 /* Sleep is interruptible. */
#define P_SYSTEM 0x00000200 /* No sigs, stats or swapping. */
#define P_TIMEOUT 0x00000400 /* Timing out during sleep. */
#define P_WEXIT 0x00002000 /* Working on exiting. */
#define P_OWEUPC 0x00008000 /* Owe proc an addupc() at next ast. */
#define P_SUSPSINGLE 0x00080000 /* Need to stop for single threading. */
#define P_CONTINUED 0x00800000 /* Proc has continued from a stopped state. */
#define P_THREAD 0x04000000 /* Only a thread, not a real process */
#define P_SUSPSIG 0x08000000 /* Stopped from signal. */
#define P_CPUPEG 0x40000000 /* Do not move to another cpu. */
#define P_BITS \
("\20" "\01INKTR" "\02PROFPEND" "\03ALRMPEND" "\04SIGSUSPEND" \
"\05CANTSLEEP" "\06WSLEEP" "\010SINTR" "\012SYSTEM" "\013TIMEOUT" \
"\016WEXIT" "\020OWEUPC" "\024SUSPSINGLE" "\027XX" \
"\030CONTINUED" "\033THREAD" "\034SUSPSIG" "\035SOFTDEP" "\037CPUPEG")
#define THREAD_PID_OFFSET 100000
#ifdef _KERNEL
struct uidinfo {
LIST_ENTRY(uidinfo) ui_hash; /* [U] */
uid_t ui_uid; /* [I] */
long ui_proccnt; /* [U] proc structs */
long ui_lockcnt; /* [U] lockf structs */
};
struct uidinfo *uid_find(uid_t);
void uid_release(struct uidinfo *);
/*
* We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t,
* as it is used to represent "no process group".
* We set PID_MAX to 99999 to keep it in 5 columns in ps
* When exposed to userspace, thread IDs have THREAD_PID_OFFSET
* added to keep them from overlapping the PID range. For them,
* we use a * a (0 .. 2^n] range for cheapness, picking 'n' such
* that 2^n + THREAD_PID_OFFSET and THREAD_PID_OFFSET have
* the same number of columns when printed.
*/
#define PID_MAX 99999
#define TID_MASK 0x7ffff
#define NO_PID (PID_MAX+1)
#define SESS_LEADER(pr) ((pr)->ps_session->s_leader == (pr))
#define SESSHOLD(s) ((s)->s_count++)
#define SESSRELE(s) do { \
if (--(s)->s_count == 0) { \
timeout_del(&(s)->s_verauthto); \
pool_put(&session_pool, (s)); \
} \
} while (/* CONSTCOND */ 0)
/*
* Flags to fork1().
*/
#define FORK_FORK 0x00000001
#define FORK_VFORK 0x00000002
#define FORK_IDLE 0x00000004
#define FORK_PPWAIT 0x00000008
#define FORK_SHAREFILES 0x00000010
#define FORK_SYSTEM 0x00000020
#define FORK_NOZOMBIE 0x00000040
#define FORK_SHAREVM 0x00000080
#define FORK_PTRACE 0x00000400
#define EXIT_NORMAL 0x00000001
#define EXIT_THREAD 0x00000002
#define EXIT_THREAD_NOCHECK 0x00000003
#define TIDHASH(tid) (&tidhashtbl[(tid) & tidhash])
extern LIST_HEAD(tidhashhead, proc) *tidhashtbl;
extern u_long tidhash;
#define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash])
extern LIST_HEAD(pidhashhead, process) *pidhashtbl;
extern u_long pidhash;
#define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash])
extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl;
extern u_long pgrphash;
extern struct proc proc0; /* Process slot for swapper. */
extern struct process process0; /* Process slot for kernel threads. */
extern int nprocesses, maxprocess; /* Cur and max number of processes. */
extern int nthreads, maxthread; /* Cur and max number of threads. */
LIST_HEAD(proclist, proc);
LIST_HEAD(processlist, process);
extern struct processlist allprocess; /* List of all processes. */
extern struct processlist zombprocess; /* List of zombie processes. */
extern struct proclist allproc; /* List of all threads. */
extern struct process *initprocess; /* Process slot for init. */
extern struct proc *reaperproc; /* Thread slot for reaper. */
extern struct proc *syncerproc; /* filesystem syncer daemon */
extern struct pool process_pool; /* memory pool for processes */
extern struct pool proc_pool; /* memory pool for procs */
extern struct pool rusage_pool; /* memory pool for zombies */
extern struct pool ucred_pool; /* memory pool for ucreds */
extern struct pool session_pool; /* memory pool for sessions */
extern struct pool pgrp_pool; /* memory pool for pgrps */
void freepid(pid_t);
struct process *prfind(pid_t); /* Find process by id. */
struct process *zombiefind(pid_t); /* Find zombie process by id. */
struct proc *tfind(pid_t); /* Find thread by id. */
struct pgrp *pgfind(pid_t); /* Find process group by id. */
struct proc *tfind_user(pid_t, struct process *);
/* Find thread by userspace id. */
void proc_printit(struct proc *p, const char *modif,
int (*pr)(const char *, ...));
int chgproccnt(uid_t uid, int diff);
void enternewpgrp(struct process *, struct pgrp *, struct session *);
void enterthispgrp(struct process *, struct pgrp *);
int inferior(struct process *, struct process *);
void leavepgrp(struct process *);
void killjobc(struct process *);
void preempt(void);
void procinit(void);
void setpriority(struct proc *, uint32_t, uint8_t);
void setrunnable(struct proc *);
void endtsleep(void *);
int wakeup_proc(struct proc *, int);
void unsleep(struct proc *);
void reaper(void *);
__dead void exit1(struct proc *, int, int, int);
void exit2(struct proc *);
void cpu_fork(struct proc *_curp, struct proc *_child, void *_stack,
void *_tcb, void (*_func)(void *), void *_arg);
void cpu_exit(struct proc *);
void process_initialize(struct process *, struct proc *);
int fork1(struct proc *_curp, int _flags, void (*_func)(void *),
void *_arg, register_t *_retval, struct proc **_newprocp);
int thread_fork(struct proc *_curp, void *_stack, void *_tcb,
pid_t *_tidptr, register_t *_retval);
int groupmember(gid_t, struct ucred *);
void dorefreshcreds(struct process *, struct proc *);
void dosigsuspend(struct proc *, sigset_t);
static inline void
refreshcreds(struct proc *p)
{
struct process *pr = p->p_p;
/* this is an unlocked access to ps_ucred, but the result is benign */
if (pr->ps_ucred != p->p_ucred)
dorefreshcreds(pr, p);
}
#define SINGLE_SUSPEND 0x01 /* other threads to stop wherever they are */
#define SINGLE_UNWIND 0x02 /* other threads to unwind and stop */
#define SINGLE_EXIT 0x03 /* other threads to unwind and then exit */
#define SINGLE_MASK 0x0f
/* extra flags for single_thread_set */
#define SINGLE_DEEP 0x10 /* call is in deep */
#define SINGLE_NOWAIT 0x20 /* do not wait for other threads to stop */
int single_thread_set(struct proc *, int);
int single_thread_wait(struct process *, int);
void single_thread_clear(struct proc *, int);
int single_thread_check(struct proc *, int);
void child_return(void *);
int proc_cansugid(struct proc *);
struct cond {
unsigned int c_wait; /* [a] initialized and waiting */
};
#define COND_INITIALIZER() { .c_wait = 1 }
void proc_trampoline_mi(void);
/*
* functions to handle sets of cpus.
*
* For now we keep the cpus in ints so that we can use the generic
* atomic ops.
*/
#define CPUSET_ASIZE(x) (((x) - 1)/32 + 1)
#define CPUSET_SSIZE CPUSET_ASIZE(MAXCPUS)
struct cpuset {
int cs_set[CPUSET_SSIZE];
};
void cpuset_init_cpu(struct cpu_info *);
void cpuset_clear(struct cpuset *);
void cpuset_add(struct cpuset *, struct cpu_info *);
void cpuset_del(struct cpuset *, struct cpu_info *);
int cpuset_isset(struct cpuset *, struct cpu_info *);
void cpuset_add_all(struct cpuset *);
void cpuset_copy(struct cpuset *, struct cpuset *);
void cpuset_union(struct cpuset *, struct cpuset *, struct cpuset *);
void cpuset_intersection(struct cpuset *t, struct cpuset *, struct cpuset *);
void cpuset_complement(struct cpuset *, struct cpuset *, struct cpuset *);
int cpuset_cardinality(struct cpuset *);
struct cpu_info *cpuset_first(struct cpuset *);
#endif /* _KERNEL */
#endif /* !_SYS_PROC_H_ */
Reference in New Issue View Git Blame Copy Permalink