X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/0b4e3aa066abc0728aacb4bbeb86f53f9737156e..743b15655a24ee3fe9f458f383003e011db0558f:/bsd/sys/proc.h diff --git a/bsd/sys/proc.h b/bsd/sys/proc.h index c6ce52227..cbf1b3a80 100644 --- a/bsd/sys/proc.h +++ b/bsd/sys/proc.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * @@ -63,153 +63,44 @@ #ifndef _SYS_PROC_H_ #define _SYS_PROC_H_ +#include #include - #include /* For struct selinfo. */ #include #include #include +#include +#ifdef KERNEL +#include +#endif +#include -/* - * One structure allocated per session. - */ -struct session { - int s_count; /* Ref cnt; pgrps in 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. */ -}; - -/* - * One structure allocated per process group. - */ -struct pgrp { - LIST_ENTRY(pgrp) pg_hash; /* Hash chain. */ - 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; /* # procs qualifying pgrp for job control */ -}; - -/* - * 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. - */ -struct proc { - LIST_ENTRY(proc) p_list; /* List of all processes. */ - - /* substructures: */ - struct pcred *p_cred; /* Process owner's identity. */ - struct filedesc *p_fd; /* Ptr to open files structure. */ - struct pstats *p_stats; /* Accounting/statistics (PROC ONLY). */ - struct plimit *p_limit; /* Process limits. */ - struct sigacts *p_sigacts; /* Signal actions, state (PROC ONLY). */ - -#define p_ucred p_cred->pc_ucred -#define p_rlimit p_limit->pl_rlimit - - int p_flag; /* P_* flags. */ - char p_stat; /* S* process status. */ - char p_pad1[3]; - - pid_t p_pid; /* Process identifier. */ - LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */ - struct proc *p_pptr; /* Pointer to parent process. */ - LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */ - LIST_HEAD(, proc) p_children; /* Pointer to list of children. */ - -/* The following fields are all zeroed upon creation in fork. */ -#define p_startzero p_oppid - - pid_t p_oppid; /* Save parent pid during ptrace. XXX */ - int p_dupfd; /* Sideways return value from fdopen. XXX */ - - /* scheduling */ - u_int p_estcpu; /* Time averaged value of p_cpticks. */ - int p_cpticks; /* Ticks of cpu time. */ - fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */ - void *p_wchan; /* Sleep address. */ - char *p_wmesg; /* Reason for sleep. */ - u_int p_swtime; /* Time swapped in or out. */ - u_int p_slptime; /* Time since last blocked. */ - - struct itimerval p_realtimer; /* Alarm timer. */ - struct timeval p_rtime; /* Real time. */ - u_quad_t p_uticks; /* Statclock hits in user mode. */ - u_quad_t p_sticks; /* Statclock hits in system mode. */ - u_quad_t p_iticks; /* Statclock hits processing intr. */ - - int p_traceflag; /* Kernel trace points. */ - struct vnode *p_tracep; /* Trace to vnode. */ - - sigset_t p_siglist; /* Signals arrived but not delivered. */ - - struct vnode *p_textvp; /* Vnode of executable. */ - -/* End area that is zeroed on creation. */ -#define p_endzero p_hash.le_next - - /* - * Not copied, not zero'ed. - * Belongs after p_pid, but here to avoid shifting proc elements. - */ - LIST_ENTRY(proc) p_hash; /* Hash chain. */ - TAILQ_HEAD( ,eventqelt) p_evlist; - -/* The following fields are all copied upon creation in fork. */ -#define p_startcopy p_sigmask - - sigset_t p_sigmask; /* Current signal mask. */ - sigset_t p_sigignore; /* Signals being ignored. */ - sigset_t p_sigcatch; /* Signals being caught by user. */ +#ifdef XNU_KERNEL_PRIVATE +#define PROC_DEF_ENABLED +#else +#ifndef KERNEL +#define PROC_DEF_ENABLED +#endif +#endif - u_char p_priority; /* Process priority. */ - u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */ - char p_nice; /* Process "nice" value. */ - char p_comm[MAXCOMLEN+1]; +#ifdef PROC_DEF_ENABLED - struct pgrp *p_pgrp; /* Pointer to process group. */ - -/* End area that is copied on creation. */ -#define p_endcopy p_xstat - - u_short p_xstat; /* Exit status for wait; also stop signal. */ - u_short p_acflag; /* Accounting flags. */ - struct rusage *p_ru; /* Exit information. XXX */ - - int p_debugger; /* 1: can exec set-bit programs if suser */ - - void *task; /* corresponding task */ - void *sigwait_thread; /* 'thread' holding sigwait */ - struct lock__bsd__ signal_lock; /* multilple thread prot for signals*/ - boolean_t sigwait; /* indication to suspend */ - void *exit_thread; /* Which thread is exiting? */ - caddr_t user_stack; /* where user stack was allocated */ - void * exitarg; /* exit arg for proc terminate */ - void * vm_shm; /* for sysV shared memory */ - sigset_t p_sigpending; /* pended Signals as traced process is blocked. */ - int p_vforkcnt; /* number of outstanding vforks */ - void * p_vforkact; /* activation running this vfork proc */ -#if DIAGNOSTIC -#if SIGNAL_DEBUG - unsigned int lockpc[8]; - unsigned int unlockpc[8]; -#endif /* SIGNAL_DEBUG */ -#endif /* DIAGNOSTIC */ -}; +struct session; +struct pgrp; +struct proc; /* Exported fields for kern sysctls */ struct extern_proc { - struct proc *p_forw; /* Doubly-linked run/sleep queue. */ - struct proc *p_back; + union { + struct { + struct proc *__p_forw; /* Doubly-linked run/sleep queue. */ + struct proc *__p_back; + } p_st1; + struct timeval __p_starttime; /* process start time */ + } p_un; +#define p_forw p_un.p_st1.__p_forw +#define p_back p_un.p_st1.__p_back +#define p_starttime p_un.__p_starttime struct vmspace *p_vmspace; /* Address space. */ struct sigacts *p_sigacts; /* Signal actions, state (PROC ONLY). */ int p_flag; /* P_* flags. */ @@ -237,10 +128,10 @@ struct extern_proc { u_quad_t p_iticks; /* Statclock hits processing intr. */ int p_traceflag; /* Kernel trace points. */ struct vnode *p_tracep; /* Trace to vnode. */ - int p_siglist; /* Signals arrived but not delivered. */ + int p_siglist; /* DEPRECATED */ struct vnode *p_textvp; /* Vnode of executable. */ int p_holdcnt; /* If non-zero, don't swap. */ - sigset_t p_sigmask; /* Current signal mask. */ + sigset_t p_sigmask; /* DEPRECATED. */ sigset_t p_sigignore; /* Signals being ignored. */ sigset_t p_sigcatch; /* Signals being caught by user. */ u_char p_priority; /* Process priority. */ @@ -254,8 +145,6 @@ struct extern_proc { struct rusage *p_ru; /* Exit information. XXX */ }; -#define p_session p_pgrp->pg_session -#define p_pgid p_pgrp->pg_id /* Status values. */ #define SIDL 1 /* Process being created by fork. */ @@ -265,116 +154,128 @@ struct extern_proc { #define SZOMB 5 /* Awaiting collection by parent. */ /* These flags are kept in p_flags. */ -#define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock. */ -#define P_CONTROLT 0x00002 /* Has a controlling terminal. */ -#define P_INMEM 0x00004 /* Loaded into memory. */ -#define P_NOCLDSTOP 0x00008 /* No SIGCHLD when children stop. */ -#define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit. */ -#define P_PROFIL 0x00020 /* Has started profiling. */ -#define P_SELECT 0x00040 /* Selecting; wakeup/waiting danger. */ -#define P_SINTR 0x00080 /* Sleep is interruptible. */ -#define P_SUGID 0x00100 /* Had set id privileges since last exec. */ -#define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping. */ -#define P_TIMEOUT 0x00400 /* Timing out during sleep. */ -#define P_TRACED 0x00800 /* Debugged process being traced. */ -#define P_WAITED 0x01000 /* Debugging process has waited for child. */ -#define P_WEXIT 0x02000 /* Working on exiting. */ -#define P_EXEC 0x04000 /* Process called exec. */ - -/* Should probably be changed into a hold count. */ -#define P_NOSWAP 0x08000 /* Another flag to prevent swap out. */ -#define P_PHYSIO 0x10000 /* Doing physical I/O. */ +#define P_ADVLOCK 0x00000001 /* Process may hold POSIX adv. lock */ +#define P_CONTROLT 0x00000002 /* Has a controlling terminal */ +#define P_LP64 0x00000004 /* Process is LP64 */ +#define P_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */ -/* Should be moved to machine-dependent areas. */ -#define P_OWEUPC 0x08000 /* Owe process an addupc() call at next ast. */ +#define P_PPWAIT 0x00000010 /* Parent waiting for chld exec/exit */ +#define P_PROFIL 0x00000020 /* Has started profiling */ +#define P_SELECT 0x00000040 /* Selecting; wakeup/waiting danger */ +#define P_CONTINUED 0x00000080 /* Process was stopped and continued */ -/* XXX Not sure what to do with these, yet. */ -#define P_FSTRACE 0x10000 /* tracing via file system (elsewhere?) */ -#define P_SSTEP 0x20000 /* process needs single-step fixup ??? */ +#define P_SUGID 0x00000100 /* Has set privileges since last exec */ +#define P_SYSTEM 0x00000200 /* Sys proc: no sigs, stats or swap */ +#define P_TIMEOUT 0x00000400 /* Timing out during sleep */ +#define P_TRACED 0x00000800 /* Debugged process being traced */ -#define P_WAITING 0x0040000 /* process has a wait() in progress */ -#define P_KDEBUG 0x0080000 /* kdebug tracing is on for this process */ -#define P_TTYSLEEP 0x0100000 /* blocked due to SIGTTOU or SIGTTIN */ -#define P_REBOOT 0x0200000 /* Process called reboot() */ -#define P_TBE 0x0400000 /* Process is TBE */ -#define P_SIGTHR 0x0800000 /* signal pending handling thread scheduled */ -#define P_BTRACE 0x1000000 /* process is being branch traced */ -#define P_VFORK 0x2000000 /* process has vfork children */ -#define P_NOATTACH 0x4000000 -#define P_INVFORK 0x8000000 /* proc in vfork */ +#define P_WAITED 0x00001000 /* Debugging prc has waited for child */ +#define P_WEXIT 0x00002000 /* Working on exiting. */ +#define P_EXEC 0x00004000 /* Process called exec. */ +/* Should be moved to machine-dependent areas. */ +#define P_OWEUPC 0x00008000 /* Owe process an addupc() call at next ast. */ +#define P_AFFINITY 0x00010000 /* xxx */ +#define P_CLASSIC 0x00020000 /* xxx */ /* - * Shareable process credentials (always resident). This includes a reference - * to the current user credentials as well as real and saved ids that may be - * used to change ids. - */ -struct pcred { - struct lock__bsd__ pc_lock; - struct ucred *pc_ucred; /* Current credentials. */ - uid_t p_ruid; /* Real user id. */ - uid_t p_svuid; /* Saved effective user id. */ - gid_t p_rgid; /* Real group id. */ - gid_t p_svgid; /* Saved effective group id. */ - int p_refcnt; /* Number of references. */ -}; +#define P_FSTRACE 0x10000 / * tracing via file system (elsewhere?) * / +#define P_SSTEP 0x20000 / * process needs single-step fixup ??? * / +*/ -#define pcred_readlock(p) lockmgr(&(p)->p_cred->pc_lock, \ - LK_SHARED, 0, (p)) -#define pcred_writelock(p) lockmgr(&(p)->p_cred->pc_lock, \ - LK_EXCLUSIVE, 0, (p)) -#define pcred_unlock(p) lockmgr(&(p)->p_cred->pc_lock, \ - LK_RELEASE, 0, (p)) +#define P_WAITING 0x00040000 /* process has a wait() in progress */ +#define P_KDEBUG 0x00080000 /* kdebug tracing on for this process */ -#ifdef KERNEL +#define P_TTYSLEEP 0x00100000 /* blocked due to SIGTTOU or SIGTTIN */ +#define P_REBOOT 0x00200000 /* Process called reboot() */ +#define P_TBE 0x00400000 /* Process is TBE */ +#define P_SIGEXC 0x00800000 /* signal exceptions */ + +#define P_BTRACE 0x01000000 /* process is being branch traced */ +#define P_VFORK 0x02000000 /* process has vfork children */ +#define P_NOATTACH 0x04000000 +#define P_INVFORK 0x08000000 /* proc in vfork */ + +#define P_NOSHLIB 0x10000000 /* no shared libs are in use for proc */ + /* flag set on exec */ +#define P_FORCEQUOTA 0x20000000 /* Force quota for root */ +#define P_NOCLDWAIT 0x40000000 /* No zombies when chil procs exit */ +#define P_NOREMOTEHANG 0x80000000 /* Don't hang on remote FS ops */ + +#define P_INMEM 0 /* Obsolete: retained for compilation */ +#define P_NOSWAP 0 /* Obsolete: retained for compilation */ +#define P_PHYSIO 0 /* Obsolete: retained for compilation */ +#define P_FSTRACE 0 /* Obsolete: retained for compilation */ +#define P_SSTEP 0 /* Obsolete: retained for compilation */ + +#endif /* PROC_DEF_ENABLED */ +#ifdef KERNEL __BEGIN_DECLS -/* - * 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". + +extern proc_t kernproc; + +extern int proc_is_classic(struct proc *p); +struct proc *current_proc_EXTERNAL(void); + +extern int msleep(void *chan, lck_mtx_t *mtx, int pri, const char *wmesg, struct timespec * ts ); +extern void unsleep(struct proc *); +extern void wakeup(void *chan); +extern void wakeup_one(caddr_t chan); + +/* proc kpis */ +/* this routine returns the pid of the current process */ +extern int proc_selfpid(void); +/* this routine returns the pid of the parent of the current process */ +extern int proc_selfppid(void); +/* this routine returns sends a signal signum to the process identified by the pid */ +extern void proc_signal(int pid, int signum); +/* this routine checks whether any signal identified by the mask are pending in the process identified by the pid. The check is on all threads of the process. */ +extern int proc_issignal(int pid, sigset_t mask); +/* this routine returns 1 if the pid1 is inferior of pid2 */ +extern int proc_isinferior(int pid1, int pid2); +/* this routine copies the process's name of the executable to the passed in buffer. It + * is always null terminated. The size of the buffer is to be passed in as well. This + * routine is to be used typically for debugging */ -#define PID_MAX 30000 -#define NO_PID 30001 - -#define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) -#define SESSHOLD(s) ((s)->s_count++) -#define SESSRELE(s) sessrele(s) - -#define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash]) -extern LIST_HEAD(pidhashhead, proc) *pidhashtbl; -extern u_long pidhash; - -#define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash]) -extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl; -extern u_long pgrphash; - -extern int nprocs, maxproc; /* Current and max number of procs. */ - -LIST_HEAD(proclist, proc); -extern struct proclist allproc; /* List of all processes. */ -extern struct proclist zombproc; /* List of zombie processes. */ -extern struct proc *initproc, *kernproc; - -extern struct proc *pfind __P((pid_t)); /* Find process by id. */ -extern struct pgrp *pgfind __P((pid_t)); /* Find process group by id. */ - -extern int chgproccnt __P((uid_t uid, int diff)); -extern int enterpgrp __P((struct proc *p, pid_t pgid, int mksess)); -extern void fixjobc __P((struct proc *p, struct pgrp *pgrp, int entering)); -extern int inferior __P((struct proc *p)); -extern int leavepgrp __P((struct proc *p)); -extern void mi_switch __P((void)); -extern void pgdelete __P((struct pgrp *pgrp)); -extern void sessrele __P((struct session *sess)); -extern void procinit __P((void)); -extern void resetpriority __P((struct proc *)); -extern void setrunnable __P((struct proc *)); -extern void setrunqueue __P((struct proc *)); -extern int sleep __P((void *chan, int pri)); -extern int tsleep __P((void *chan, int pri, char *wmesg, int timo)); -extern int tsleep0 __P((void *chan, int pri, char *wmesg, int timo, int (*continuation)(int) )); -extern void unsleep __P((struct proc *)); -extern void wakeup __P((void *chan)); +void proc_name(int pid, char * buf, int size); +/* This routine is simillar to proc_name except it returns for current process */ +void proc_selfname(char * buf, int size); + +/* find a process with a given pid. This comes with a reference which needs to be dropped by proc_rele */ +extern proc_t proc_find(int pid); +/* returns a handle to current process which is referenced. The reference needs to be dropped with proc_rele */ +extern proc_t proc_self(void); +/* releases the held reference on the process */ +extern int proc_rele(proc_t p); +/* returns the pid of the given process */ +extern int proc_pid(proc_t); +/* returns the pid of the parent of a given process */ +extern int proc_ppid(proc_t); +/* returns 1 if the process is marked for no remote hangs */ +extern int proc_noremotehang(proc_t); +/* returns 1 is the process is marked for force quota */ +extern int proc_forcequota(proc_t); + +/* this routine returns 1 if the process is running with 64bit address space, else 0 */ +extern int proc_is64bit(proc_t); +/* is this process exiting? */ +extern int proc_exiting(proc_t); +/* this routine returns error is the process is not one with super user privileges */ +int proc_suser(struct proc *p); +/* returns the ucred assicaited with the process; temporary api */ +struct ucred * proc_ucred(struct proc *p); + +/* LP64todo - figure out how to identify 64-bit processes if NULL procp */ +extern int IS_64BIT_PROCESS(proc_t); +extern int proc_pendingsignals(struct proc *, sigset_t); +extern int proc_tbe(struct proc *); + +#ifdef KERNEL_PRIVATE +extern int tsleep(void *chan, int pri, const char *wmesg, int timo); +extern int msleep1(void *chan, lck_mtx_t *mtx, int pri, const char *wmesg, u_int64_t timo); +#endif + __END_DECLS #endif /* KERNEL */