/* $NetBSD: proc.h,v 1.373 2023/10/04 20:52:07 ad Exp $ */ /*- * Copyright (c) 2006, 2007, 2008, 2020, 2023 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Andrew Doran. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /*- * 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 8.15 (Berkeley) 5/19/95 */ #ifndef _SYS_PROC_H_ #define _SYS_PROC_H_ #include <sys/lwp.h> #if defined(_KMEMUSER) || defined(_KERNEL) #if defined(_KERNEL_OPT) #include "opt_multiprocessor.h" #include "opt_kstack.h" #include "opt_lockdebug.h" #endif #include <machine/proc.h> /* Machine-dependent proc substruct */ #include <machine/pcb.h> #include <sys/aio.h> #include <sys/idtype.h> #include <sys/rwlock.h> #include <sys/mqueue.h> #include <sys/mutex.h> #include <sys/condvar.h> #include <sys/queue.h> #include <sys/radixtree.h> #include <sys/signalvar.h> #include <sys/siginfo.h> #include <sys/event.h> #include <sys/specificdata.h> #ifdef _KERNEL #include <sys/resourcevar.h> #else #include <sys/time.h> #include <sys/resource.h> #endif /* * One structure allocated per session. */ struct session { int s_count; /* Ref cnt; pgrps in session */ u_int s_flags; #define S_LOGIN_SET 1 /* s_login set in this session */ struct proc *s_leader; /* Session leader */ struct vnode *s_ttyvp; /* Vnode of controlling terminal */ struct tty *s_ttyp; /* Controlling terminal */ char s_login[MAXLOGNAME]; /* Setlogin() name */ pid_t s_sid; /* Session ID (pid of leader) */ }; /* * One structure allocated per process group. */ struct pgrp { LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members */ struct session *pg_session; /* Pointer to session */ pid_t pg_id; /* Pgrp id */ int pg_jobc; /* * Number of processes qualifying * pgrp for job control */ }; /* * Autoloadable syscall definition */ struct sc_autoload { u_int al_code; const char *al_module; }; /* * One structure allocated per emulation. */ struct exec_package; struct ras; struct kauth_cred; struct emul { const char *e_name; /* Symbolic name */ const char *e_path; /* Extra emulation path (NULL if none)*/ #ifndef __HAVE_MINIMAL_EMUL int e_flags; /* Miscellaneous flags, see above */ /* Syscall handling function */ const int *e_errno; /* Errno array */ int e_nosys; /* Offset of the nosys() syscall */ int e_nsysent; /* Number of system call entries */ #endif struct sysent *e_sysent; /* System call array */ const uint32_t *e_nomodbits; /* sys_nosys/sys_nomodule flags * for syscall_disestablish() */ const char * const *e_syscallnames; /* System call name array */ struct sc_autoload *e_sc_autoload; /* List of autoloadable syscalls */ /* Signal sending function */ void (*e_sendsig)(const struct ksiginfo *, const sigset_t *); void (*e_trapsignal)(struct lwp *, struct ksiginfo *); char *e_sigcode; /* Start of sigcode */ char *e_esigcode; /* End of sigcode */ /* Set registers before execution */ struct uvm_object **e_sigobject;/* shared sigcode object */ void (*e_setregs)(struct lwp *, struct exec_package *, vaddr_t); /* Per-process hooks */ void (*e_proc_exec)(struct proc *, struct exec_package *); void (*e_proc_fork)(struct proc *, struct lwp *, int); void (*e_proc_exit)(struct proc *); void (*e_lwp_fork)(struct lwp *, struct lwp *); void (*e_lwp_exit)(struct lwp *); #ifdef __HAVE_SYSCALL_INTERN void (*e_syscall_intern)(struct proc *); #else void (*e_syscall)(void); #endif /* Emulation specific sysctl data */ struct sysctlnode *e_sysctlovly; vaddr_t (*e_vm_default_addr)(struct proc *, vaddr_t, vsize_t, int); /* Emulation-specific hook for userspace page faults */ int (*e_usertrap)(struct lwp *, vaddr_t, void *); size_t e_ucsize; /* size of ucontext_t */ void (*e_startlwp)(void *); /* Dtrace syscall probe */ void (*e_dtrace_syscall)(uint32_t, register_t, const struct sysent *, const void *, const register_t *, int); /* Emulation specific support for ktracing signal posts */ void (*e_ktrpsig)(int, sig_t, const sigset_t *, const struct ksiginfo *); }; /* * Emulation miscellaneous flags */ #define EMUL_HAS_SYS___syscall 0x001 /* Has SYS___syscall */ /* * Description of a process. * * This structure contains 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. The process structure and the substructures * are always addressible except for those marked "(PROC ONLY)" below, * which might be addressible only on a processor on which the process * is running. * * Field markings and the corresponding locks: * * a: p_auxlock * k: ktrace_mutex * l: proc_lock * t: p_stmutex * p: p_lock * (: updated atomically * :: unlocked, stable */ struct vmspace; struct proc { LIST_ENTRY(proc) p_list; /* l: List of all processes */ kmutex_t *p_lock; /* :: general mutex */ kcondvar_t p_waitcv; /* p: wait, stop CV on children */ kcondvar_t p_lwpcv; /* p: wait, stop CV on LWPs */ /* Substructures: */ struct kauth_cred *p_cred; /* p: Master copy of credentials */ struct filedesc *p_fd; /* :: Ptr to open files structure */ struct cwdinfo *p_cwdi; /* :: cdir/rdir/cmask info */ struct pstats *p_stats; /* :: Accounting/stats (PROC ONLY) */ struct plimit *p_limit; /* :: Process limits */ struct vmspace *p_vmspace; /* :: Address space */ struct sigacts *p_sigacts; /* :: Process sigactions */ struct aioproc *p_aio; /* p: Asynchronous I/O data */ u_int p_mqueue_cnt; /* (: Count of open message queues */ specificdata_reference p_specdataref; /* subsystem proc-specific data */ int p_exitsig; /* l: signal to send to parent on exit */ int p_flag; /* p: PK_* flags */ int p_sflag; /* p: PS_* flags */ int p_stflag; /* t: PST_* flags */ short p_slflag; /* l, p: PSL_* flags */ char p_stat; /* l: S* process status. */ char p_lflag; /* l: PL_* flags */ char p_trace_enabled;/* p: cached by syscall_intern() */ char p_pad1[3]; /* unused */ pid_t p_pid; /* :: Process identifier. */ LIST_ENTRY(proc) p_pglist; /* l: List of processes in pgrp. */ struct proc *p_pptr; /* l: Pointer to parent process. */ LIST_ENTRY(proc) p_sibling; /* l: List of sibling processes. */ LIST_HEAD(, proc) p_children; /* l: List of children. */ LIST_HEAD(, lwp) p_lwps; /* p: List of LWPs. */ struct ras *p_raslist; /* a: List of RAS entries */ /* The following fields are all zeroed upon creation in fork. */ #define p_startzero p_nlwps int p_nlwps; /* p: Number of LWPs */ int p_nzlwps; /* p: Number of zombie LWPs */ int p_nrlwps; /* p: Number running/sleeping LWPs */ int p_nlwpwait; /* p: Number of LWPs in lwp_wait1() */ int p_ndlwps; /* p: Number of detached LWPs */ u_int p_nstopchild; /* l: Count of stopped/dead children */ u_int p_waited; /* l: parent has waited on child */ struct lwp *p_zomblwp; /* p: detached LWP to be reaped */ struct lwp *p_vforklwp; /* p: parent LWP waiting at vfork() */ /* scheduling */ void *p_sched_info; /* p: Scheduler-specific structure */ fixpt_t p_estcpu; /* p: Time avg. value of p_cpticks */ fixpt_t p_estcpu_inherited; /* p: cpu inherited from children */ unsigned int p_forktime; fixpt_t p_pctcpu; /* p: %cpu from dead LWPs */ struct proc *p_opptr; /* l: save parent during ptrace. */ struct ptimers *p_timers; /* Timers: real, virtual, profiling */ struct bintime p_rtime; /* p: real time */ u_quad_t p_uticks; /* t: Statclock hits in user mode */ u_quad_t p_sticks; /* t: Statclock hits in system mode */ u_quad_t p_iticks; /* t: Statclock hits processing intr */ uint64_t p_xutime; /* p: utime exposed to userspace */ uint64_t p_xstime; /* p: stime exposed to userspace */ int p_traceflag; /* k: Kernel trace points */ void *p_tracep; /* k: Trace private data */ struct vnode *p_textvp; /* :: Vnode of executable */ struct emul *p_emul; /* :: emulation information */ void *p_emuldata; /* :: per-proc emul data, or NULL */ const struct execsw *p_execsw; /* :: exec package information */ struct klist p_klist; /* p: knotes attached to proc */ LIST_HEAD(, lwp) p_sigwaiters; /* p: LWPs waiting for signals */ sigpend_t p_sigpend; /* p: pending signals */ struct lcproc *p_lwpctl; /* p, a: _lwp_ctl() information */ pid_t p_ppid; /* :: cached parent pid */ pid_t p_oppid; /* :: cached original parent pid */ char *p_path; /* :: full pathname of executable */ /* * 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_sigctx struct sigctx p_sigctx; /* p: Shared signal state */ u_char p_nice; /* p: Process "nice" value */ char p_comm[MAXCOMLEN+1]; /* p: basename of last exec file */ struct pgrp *p_pgrp; /* l: Pointer to process group */ vaddr_t p_psstrp; /* :: address of process's ps_strings */ u_int p_pax; /* :: PAX flags */ int p_xexit; /* p: exit code */ /* * End area that is copied on creation */ #define p_endcopy p_xsig u_short p_xsig; /* p: stop signal */ u_short p_acflag; /* p: Acc. flags; see struct lwp also */ struct mdproc p_md; /* p: Any machine-dependent fields */ vaddr_t p_stackbase; /* :: ASLR randomized stack base */ struct kdtrace_proc *p_dtrace; /* :: DTrace-specific data. */ /* * Locks in their own cache line towards the end. */ kmutex_t p_auxlock /* :: secondary, longer term lock */ __aligned(COHERENCY_UNIT); kmutex_t p_stmutex; /* :: mutex on profiling state */ krwlock_t p_reflock; /* :: lock for debugger, procfs */ }; #define p_rlimit p_limit->pl_rlimit #define p_session p_pgrp->pg_session #define p_pgid p_pgrp->pg_id #endif /* _KMEMUSER || _KERNEL */ /* * Status values. */ #define SIDL 1 /* Process being created by fork */ #define SACTIVE 2 /* Process is not stopped */ #define SDYING 3 /* About to die */ #define SSTOP 4 /* Process debugging or suspension */ #define SZOMB 5 /* Awaiting collection by parent */ #define SDEAD 6 /* Almost a zombie */ #define P_ZOMBIE(p) \ ((p)->p_stat == SZOMB || (p)->p_stat == SDYING || (p)->p_stat == SDEAD) /* * These flags are kept in p_flag and are protected by p_lock. Access from * process context only. */ #define PK_ADVLOCK 0x00000001 /* Process may hold a POSIX advisory lock */ #define PK_SYSTEM 0x00000002 /* System process (kthread) */ #define PK_SYSVSEM 0x00000004 /* Used SysV semaphores */ #define PK_SUGID 0x00000100 /* Had set id privileges since last exec */ #define PK_KMEM 0x00000200 /* Has kmem access */ #define PK_EXEC 0x00004000 /* Process called exec */ #define PK_NOCLDWAIT 0x00020000 /* No zombies if child dies */ #define PK_32 0x00040000 /* 32-bit process (used on 64-bit kernels) */ #define PK_CLDSIGIGN 0x00080000 /* Process is ignoring SIGCHLD */ #define PK_MARKER 0x80000000 /* Is a dummy marker process */ /* * These flags are kept in p_sflag and are protected by p_lock. Access from * process context only. */ #define PS_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */ #define PS_RUMP_LWPEXIT 0x00000400 /* LWPs in RUMP kernel should exit for GC */ #define PS_WCORE 0x00001000 /* Process needs to dump core */ #define PS_WEXIT 0x00002000 /* Working on exiting */ #define PS_STOPFORK 0x00800000 /* Child will be stopped on fork(2) */ #define PS_STOPEXEC 0x01000000 /* Will be stopped on exec(2) */ #define PS_STOPEXIT 0x02000000 /* Will be stopped at process exit */ #define PS_COREDUMP 0x20000000 /* Process core-dumped */ #define PS_CONTINUED 0x40000000 /* Process is continued */ #define PS_STOPPING 0x80000000 /* Transitioning SACTIVE -> SSTOP */ /* * These flags are kept in p_slflag and are protected by the proc_lock * and p_lock. Access from process context only. */ #define PSL_TRACEFORK 0x00000001 /* traced process wants fork events */ #define PSL_TRACEVFORK 0x00000002 /* traced process wants vfork events */ #define PSL_TRACEVFORK_DONE \ 0x00000004 /* traced process wants vfork done events */ #define PSL_TRACELWP_CREATE \ 0x00000008 /* traced process wants LWP create events */ #define PSL_TRACELWP_EXIT \ 0x00000010 /* traced process wants LWP exit events */ #define PSL_TRACEPOSIX_SPAWN \ 0x00000020 /* traced process wants posix_spawn events */ #define PSL_TRACED 0x00000040 /* Debugged process being traced */ #define PSL_TRACEDCHILD 0x00000080 /* Report process birth */ #define PSL_CHTRACED 0x00000100 /* Child has been traced & reparented */ #define PSL_SYSCALL 0x00000200 /* process has PT_SYSCALL enabled */ #define PSL_SYSCALLEMU 0x00000400 /* cancel in-progress syscall */ /* * Kept in p_stflag and protected by p_stmutex. */ #define PST_PROFIL 0x00000020 /* Has started profiling */ /* * Kept in p_lflag and protected by the proc_lock. Access * from process context only. */ #define PL_CONTROLT 0x00000001 /* Has a controlling terminal */ #define PL_PPWAIT 0x00000002 /* Parent is waiting for child exec/exit */ #define PL_SIGCOMPAT 0x00000004 /* Has used compat signal trampoline */ #define PL_ORPHANPG 0x00000008 /* Member of an orphaned pgrp */ #if defined(_KMEMUSER) || defined(_KERNEL) /* * Macro to compute the exit signal to be delivered. */ #define P_EXITSIG(p) \ (((p)->p_slflag & PSL_TRACED) ? SIGCHLD : p->p_exitsig) /* * Compute a wait(2) 16 bit exit status code */ #define P_WAITSTATUS(p) W_EXITCODE((p)->p_xexit, ((p)->p_xsig | \ (((p)->p_sflag & PS_COREDUMP) ? WCOREFLAG : 0))) LIST_HEAD(proclist, proc); /* A list of processes */ /* * This structure associates a proclist with its lock. */ struct proclist_desc { struct proclist *pd_list; /* The list */ /* * XXX Add a pointer to the proclist's lock eventually. */ }; #ifdef _KERNEL /* * We use process IDs <= PID_MAX until there are > 16k processes. * NO_PGID is used to represent "no process group" for a tty. */ #define PID_MAX 30000 #define NO_PGID ((pid_t)-1) #define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) /* * Flags passed to fork1(). */ #define FORK_PPWAIT 0x0001 /* Block parent until child exit */ #define FORK_SHAREVM 0x0002 /* Share vmspace with parent */ #define FORK_SHARECWD 0x0004 /* Share cdir/rdir/cmask */ #define FORK_SHAREFILES 0x0008 /* Share file descriptors */ #define FORK_SHARESIGS 0x0010 /* Share signal actions */ #define FORK_NOWAIT 0x0020 /* Make init the parent of the child */ #define FORK_CLEANFILES 0x0040 /* Start with a clean descriptor set */ #define FORK_SYSTEM 0x0080 /* Fork a kernel thread */ extern struct proc proc0; /* Process slot for swapper */ extern u_int nprocs; /* Current number of procs */ extern int maxproc; /* Max number of procs */ #define vmspace_kernel() (proc0.p_vmspace) extern kmutex_t proc_lock; extern struct proclist allproc; /* List of all processes */ extern struct proclist zombproc; /* List of zombie processes */ extern struct proc *initproc; /* Process slots for init, pager */ extern const struct proclist_desc proclists[]; int proc_find_locked(struct lwp *, struct proc **, pid_t); proc_t * proc_find_raw(pid_t); proc_t * proc_find(pid_t); /* Find process by ID */ proc_t * proc_find_lwpid(pid_t); /* Find process by LWP ID */ struct lwp * proc_find_lwp(proc_t *, pid_t); /* Find LWP in proc by ID */ struct lwp * proc_find_lwp_unlocked(proc_t *, pid_t); /* Find LWP, acquire proc */ struct lwp * proc_find_lwp_acquire_proc(pid_t, proc_t **); struct pgrp * pgrp_find(pid_t); /* Find process group by ID */ void procinit(void); void procinit_sysctl(void); int proc_enterpgrp(struct proc *, pid_t, pid_t, bool); void proc_leavepgrp(struct proc *); void proc_sesshold(struct session *); void proc_sessrele(struct session *); void fixjobc(struct proc *, struct pgrp *, int); int tsleep(wchan_t, pri_t, const char *, int); int mtsleep(wchan_t, pri_t, const char *, int, kmutex_t *); void wakeup(wchan_t); int kpause(const char *, bool, int, kmutex_t *); void exit1(struct lwp *, int, int) __dead; int kill1(struct lwp *l, pid_t pid, ksiginfo_t *ksi, register_t *retval); int do_sys_wait(int *, int *, int, struct rusage *); int do_sys_waitid(idtype_t, id_t, int *, int *, int, struct wrusage *, siginfo_t *); struct proc *proc_alloc(void); void proc0_init(void); pid_t proc_alloc_pid(struct proc *); void proc_free_pid(pid_t); pid_t proc_alloc_lwpid(struct proc *, struct lwp *); void proc_free_lwpid(struct proc *, pid_t); void proc_free_mem(struct proc *); void exit_lwps(struct lwp *l); int fork1(struct lwp *, int, int, void *, size_t, void (*)(void *), void *, register_t *); int pgid_in_session(struct proc *, pid_t); void cpu_lwp_fork(struct lwp *, struct lwp *, void *, size_t, void (*)(void *), void *); void cpu_lwp_free(struct lwp *, int); void cpu_lwp_free2(struct lwp *); void cpu_spawn_return(struct lwp*); #ifdef __HAVE_SYSCALL_INTERN void syscall_intern(struct proc *); #endif void md_child_return(struct lwp *); void child_return(void *); int proc_isunder(struct proc *, struct lwp *); int proc_uidmatch(kauth_cred_t, kauth_cred_t); int proc_vmspace_getref(struct proc *, struct vmspace **); void proc_crmod_leave(kauth_cred_t, kauth_cred_t, bool); void proc_crmod_enter(void); int proc_getauxv(struct proc *, void **, size_t *); int proc_specific_key_create(specificdata_key_t *, specificdata_dtor_t); void proc_specific_key_delete(specificdata_key_t); void proc_initspecific(struct proc *); void proc_finispecific(struct proc *); void * proc_getspecific(struct proc *, specificdata_key_t); void proc_setspecific(struct proc *, specificdata_key_t, void *); int proc_compare(const struct proc *, const struct lwp *, const struct proc *, const struct lwp *); /* * Special handlers for delivering EVFILT_PROC notifications. These * exist to handle some of the special locking considerations around * processes. */ void knote_proc_exec(struct proc *); void knote_proc_fork(struct proc *, struct proc *); void knote_proc_exit(struct proc *); int proclist_foreach_call(struct proclist *, int (*)(struct proc *, void *arg), void *); static __inline struct proc * _proclist_skipmarker(struct proc *p0) { struct proc *p = p0; while (p != NULL && p->p_flag & PK_MARKER) p = LIST_NEXT(p, p_list); return p; } #define PROC_PTRSZ(p) (((p)->p_flag & PK_32) ? sizeof(int) : sizeof(void *)) #define PROC_REGSZ(p) (((p)->p_flag & PK_32) ? \ sizeof(process_reg32) : sizeof(struct reg)) #define PROC_FPREGSZ(p) (((p)->p_flag & PK_32) ? \ sizeof(process_fpreg32) : sizeof(struct fpreg)) #define PROC_DBREGSZ(p) (((p)->p_flag & PK_32) ? \ sizeof(process_dbreg32) : sizeof(struct dbreg)) #ifndef PROC_MACHINE_ARCH #define PROC_MACHINE_ARCH(p) machine_arch #endif /* * PROCLIST_FOREACH: iterate on the given proclist, skipping PK_MARKER ones. */ #define PROCLIST_FOREACH(var, head) \ for ((var) = LIST_FIRST(head); \ ((var) = _proclist_skipmarker(var)) != NULL; \ (var) = LIST_NEXT(var, p_list)) #ifdef KSTACK_CHECK_MAGIC void kstack_setup_magic(const struct lwp *); void kstack_check_magic(const struct lwp *); #else #define kstack_setup_magic(x) #define kstack_check_magic(x) #endif extern struct emul emul_netbsd; #endif /* _KERNEL */ /* * Kernel stack parameters. * * KSTACK_LOWEST_ADDR: return the lowest address of the LWP's kernel stack, * excluding red-zone. * * KSTACK_SIZE: the size kernel stack for a LWP, excluding red-zone. * * if <machine/proc.h> provides the MD definition, it will be used. */ #ifndef KSTACK_LOWEST_ADDR #define KSTACK_LOWEST_ADDR(l) ((void *)ALIGN((struct pcb *)((l)->l_addr) + 1)) #endif #ifndef KSTACK_SIZE #define KSTACK_SIZE (USPACE - ALIGN(sizeof(struct pcb))) #endif #endif /* _KMEMUSER || _KERNEL */ #endif /* !_SYS_PROC_H_ */
