1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
  24  */
  25 
  26 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T     */
  27 /*        All Rights Reserved   */
  28 
  29 #ifndef _SYS_PROC_H
  30 #define _SYS_PROC_H
  31 
  32 #include <sys/time.h>
  33 #include <sys/thread.h>
  34 #include <sys/cred.h>
  35 #include <sys/user.h>
  36 #include <sys/watchpoint.h>
  37 #include <sys/timer.h>
  38 #if defined(__x86)
  39 #include <sys/tss.h>
  40 #include <sys/segments.h>
  41 #endif
  42 #include <sys/utrap.h>
  43 #include <sys/model.h>
  44 #include <sys/refstr.h>
  45 #include <sys/avl.h>
  46 #include <sys/rctl.h>
  47 #include <sys/list.h>
  48 #include <sys/avl.h>
  49 #include <sys/door_impl.h>
  50 #include <sys/signalfd.h>
  51 
  52 #ifdef  __cplusplus
  53 extern "C" {
  54 #endif
  55 
  56 /*
  57  * Profile arguments.
  58  */
  59 struct prof {
  60         void            *pr_base;       /* buffer base */
  61         uintptr_t       pr_off;         /* pc offset */
  62         size_t          pr_size;        /* buffer size */
  63         uint32_t        pr_scale;       /* pc scaling */
  64         long            pr_samples;     /* sample count */
  65 };
  66 
  67 /*
  68  * An lwp directory entry.
  69  * If le_thread != NULL, this is an active lwp.
  70  * If le_thread == NULL, this is an unreaped zombie lwp.
  71  */
  72 typedef struct lwpent {
  73         kthread_t       *le_thread;     /* the active lwp, NULL if zombie */
  74         id_t            le_lwpid;       /* its lwpid (t->t_tid) */
  75         uint16_t        le_waiters;     /* total number of lwp_wait()ers */
  76         uint16_t        le_dwaiters;    /* number that are daemons */
  77         clock_t         le_start;       /* start time of this lwp */
  78         struct vnode    *le_trace;      /* pointer to /proc lwp vnode */
  79 } lwpent_t;
  80 
  81 typedef struct pctxop {
  82         void    (*save_op)(void *);     /* function to invoke to save ctx */
  83         void    (*restore_op)(void *);  /* function to invoke to restore ctx */
  84         void    (*fork_op)(void *, void *); /* invoke to fork context */
  85         void    (*exit_op)(void *);     /* invoked during process exit */
  86         void    (*free_op)(void *, int); /* function which frees the context */
  87         void    *arg;                   /* argument to above functions */
  88         struct pctxop *next;            /* next pcontext ops */
  89 } pctxop_t;
  90 
  91 /*
  92  * Elements of the lwp directory, p->p_lwpdir[].
  93  *
  94  * We allocate lwp directory entries separately from lwp directory
  95  * elements because the lwp directory must be allocated as an array.
  96  * The number of lwps can grow quite large and we want to keep the
  97  * size of the kmem_alloc()d directory as small as possible.
  98  *
  99  * If ld_entry == NULL, the entry is free and is on the free list,
 100  * p->p_lwpfree, linked through ld_next.  If ld_entry != NULL, the
 101  * entry is used and ld_next is the thread-id hash link pointer.
 102  */
 103 typedef struct lwpdir {
 104         struct lwpdir   *ld_next;       /* hash chain or free list */
 105         struct lwpent   *ld_entry;      /* lwp directory entry */
 106 } lwpdir_t;
 107 
 108 /*
 109  * Element of the p_tidhash thread-id (lwpid) hash table.
 110  */
 111 typedef struct tidhash {
 112         kmutex_t        th_lock;
 113         lwpdir_t        *th_list;
 114 } tidhash_t;
 115 
 116 /*
 117  * Retired tidhash hash tables.
 118  */
 119 typedef struct ret_tidhash {
 120         struct ret_tidhash      *rth_next;
 121         tidhash_t               *rth_tidhash;
 122         uint_t                  rth_tidhash_sz;
 123 } ret_tidhash_t;
 124 
 125 struct pool;
 126 struct task;
 127 struct zone;
 128 struct brand;
 129 struct corectl_path;
 130 struct corectl_content;
 131 
 132 /*
 133  * One structure allocated per active process.  Per-process data (user.h) is
 134  * also inside the proc structure.
 135  */
 136 typedef struct  proc {
 137         /*
 138          * Fields requiring no explicit locking
 139          */
 140         struct  vnode *p_exec;          /* pointer to a.out vnode */
 141         struct  as *p_as;               /* process address space pointer */
 142         struct  plock *p_lockp;         /* ptr to proc struct's mutex lock */
 143         kmutex_t p_crlock;              /* lock for p_cred */
 144         struct  cred    *p_cred;        /* process credentials */
 145         /*
 146          * Fields protected by pidlock
 147          */
 148         char    p_stat;                 /* status of process */
 149         char    p_wcode;                /* current wait code */
 150         ushort_t p_pidflag;             /* flags protected only by pidlock */
 151         int     p_wdata;                /* current wait return value */
 152         pid_t   p_ppid;                 /* process id of parent */
 153         struct  proc    *p_link;        /* forward link */
 154         struct  proc    *p_parent;      /* ptr to parent process */
 155         struct  proc    *p_child;       /* ptr to first child process */
 156         struct  proc    *p_sibling;     /* ptr to next sibling proc on chain */
 157         struct  proc    *p_psibling;    /* ptr to prev sibling proc on chain */
 158         struct  proc    *p_sibling_ns;  /* prt to siblings with new state */
 159         struct  proc    *p_child_ns;    /* prt to children with new state */
 160         struct  proc    *p_next;        /* active chain link next */
 161         struct  proc    *p_prev;        /* active chain link prev */
 162         struct  proc    *p_nextofkin;   /* gets accounting info at exit */
 163         struct  proc    *p_orphan;
 164         struct  proc    *p_nextorph;
 165         struct  proc    *p_pglink;      /* process group hash chain link next */
 166         struct  proc    *p_ppglink;     /* process group hash chain link prev */
 167         struct  sess    *p_sessp;       /* session information */
 168         struct  pid     *p_pidp;        /* process ID info */
 169         struct  pid     *p_pgidp;       /* process group ID info */
 170         /*
 171          * Fields protected by p_lock
 172          */
 173         kcondvar_t p_cv;                /* proc struct's condition variable */
 174         kcondvar_t p_flag_cv;
 175         kcondvar_t p_lwpexit;           /* waiting for some lwp to exit */
 176         kcondvar_t p_holdlwps;          /* process is waiting for its lwps */
 177                                         /* to to be held.  */
 178         uint_t  p_proc_flag;            /* /proc-related flags */
 179         uint_t  p_flag;                 /* protected while set. */
 180                                         /* flags defined below */
 181         clock_t p_utime;                /* user time, this process */
 182         clock_t p_stime;                /* system time, this process */
 183         clock_t p_cutime;               /* sum of children's user time */
 184         clock_t p_cstime;               /* sum of children's system time */
 185         avl_tree_t *p_segacct;          /* System V shared segment list */
 186         avl_tree_t *p_semacct;          /* System V semaphore undo list */
 187         caddr_t p_bssbase;              /* base addr of last bss below heap */
 188         caddr_t p_brkbase;              /* base addr of heap */
 189         size_t  p_brksize;              /* heap size in bytes */
 190         uint_t  p_brkpageszc;           /* preferred heap max page size code */
 191         /*
 192          * Per process signal stuff.
 193          */
 194         k_sigset_t p_sig;               /* signals pending to this process */
 195         k_sigset_t p_extsig;            /* signals sent from another contract */
 196         k_sigset_t p_ignore;            /* ignore when generated */
 197         k_sigset_t p_siginfo;           /* gets signal info with signal */
 198         void *p_sigfd;                  /* signalfd support state */
 199         struct sigqueue *p_sigqueue;    /* queued siginfo structures */
 200         struct sigqhdr *p_sigqhdr;      /* hdr to sigqueue structure pool */
 201         struct sigqhdr *p_signhdr;      /* hdr to signotify structure pool */
 202         uchar_t p_stopsig;              /* jobcontrol stop signal */
 203 
 204         /*
 205          * Special per-process flag when set will fix misaligned memory
 206          * references.
 207          */
 208         char    p_fixalignment;
 209 
 210         /*
 211          * Per process lwp and kernel thread stuff
 212          */
 213         id_t    p_lwpid;                /* most recently allocated lwpid */
 214         int     p_lwpcnt;               /* number of lwps in this process */
 215         int     p_lwprcnt;              /* number of not stopped lwps */
 216         int     p_lwpdaemon;            /* number of TP_DAEMON lwps */
 217         int     p_lwpwait;              /* number of lwps in lwp_wait() */
 218         int     p_lwpdwait;             /* number of daemons in lwp_wait() */
 219         int     p_zombcnt;              /* number of zombie lwps */
 220         kthread_t *p_tlist;             /* circular list of threads */
 221         lwpdir_t *p_lwpdir;             /* thread (lwp) directory */
 222         lwpdir_t *p_lwpfree;            /* p_lwpdir free list */
 223         tidhash_t *p_tidhash;           /* tid (lwpid) lookup hash table */
 224         uint_t  p_lwpdir_sz;            /* number of p_lwpdir[] entries */
 225         uint_t  p_tidhash_sz;           /* number of p_tidhash[] entries */
 226         ret_tidhash_t *p_ret_tidhash;   /* retired tidhash hash tables */
 227         uint64_t p_lgrpset;             /* unprotected hint of set of lgrps */
 228                                         /* on which process has threads */
 229         volatile lgrp_id_t  p_t1_lgrpid; /* main's thread lgroup id */
 230         volatile lgrp_id_t  p_tr_lgrpid; /* text replica's lgroup id */
 231 #if defined(_LP64)
 232         uintptr_t  p_lgrpres2;          /* reserved for lgrp migration */
 233 #endif
 234         /*
 235          * /proc (process filesystem) debugger interface stuff.
 236          */
 237         k_sigset_t p_sigmask;           /* mask of traced signals (/proc) */
 238         k_fltset_t p_fltmask;           /* mask of traced faults (/proc) */
 239         struct vnode *p_trace;          /* pointer to primary /proc vnode */
 240         struct vnode *p_plist;          /* list of /proc vnodes for process */
 241         kthread_t *p_agenttp;           /* thread ptr for /proc agent lwp */
 242         avl_tree_t p_warea;             /* list of watched areas */
 243         avl_tree_t p_wpage;             /* remembered watched pages (vfork) */
 244         watched_page_t *p_wprot;        /* pages that need to have prot set */
 245         int     p_mapcnt;               /* number of active pr_mappage()s */
 246         kmutex_t p_maplock;             /* lock for pr_mappage() */
 247         struct  proc  *p_rlink;         /* linked list for server */
 248         kcondvar_t p_srwchan_cv;
 249         size_t  p_stksize;              /* process stack size in bytes */
 250         uint_t  p_stkpageszc;           /* preferred stack max page size code */
 251 
 252         /*
 253          * Microstate accounting, resource usage, and real-time profiling
 254          */
 255         hrtime_t p_mstart;              /* hi-res process start time */
 256         hrtime_t p_mterm;               /* hi-res process termination time */
 257         hrtime_t p_mlreal;              /* elapsed time sum over defunct lwps */
 258         hrtime_t p_acct[NMSTATES];      /* microstate sum over defunct lwps */
 259         hrtime_t p_cacct[NMSTATES];     /* microstate sum over child procs */
 260         struct lrusage p_ru;            /* lrusage sum over defunct lwps */
 261         struct lrusage p_cru;           /* lrusage sum over child procs */
 262         struct itimerval p_rprof_timer; /* ITIMER_REALPROF interval timer */
 263         uintptr_t p_rprof_cyclic;       /* ITIMER_REALPROF cyclic */
 264         uint_t  p_defunct;              /* number of defunct lwps */
 265         /*
 266          * profiling. A lock is used in the event of multiple lwp's
 267          * using the same profiling base/size.
 268          */
 269         kmutex_t p_pflock;              /* protects user profile arguments */
 270         struct prof p_prof;             /* profile arguments */
 271 
 272         /*
 273          * Doors.
 274          */
 275         door_pool_t             p_server_threads; /* common thread pool */
 276         struct door_node        *p_door_list;   /* active doors */
 277         struct door_node        *p_unref_list;
 278         kcondvar_t              p_unref_cv;
 279         char                    p_unref_thread; /* unref thread created */
 280 
 281         /*
 282          * Kernel probes
 283          */
 284         uchar_t                 p_tnf_flags;
 285 
 286         /*
 287          * Solaris Audit
 288          */
 289         struct p_audit_data     *p_audit_data; /* per process audit structure */
 290 
 291         pctxop_t        *p_pctx;
 292 
 293 #if defined(__x86)
 294         /*
 295          * LDT support.
 296          */
 297         kmutex_t        p_ldtlock;      /* protects the following fields */
 298         user_desc_t     *p_ldt;         /* Pointer to private LDT */
 299         system_desc_t   p_ldt_desc;     /* segment descriptor for private LDT */
 300         ushort_t        p_ldtlimit;     /* highest selector used */
 301 #endif
 302         size_t p_swrss;                 /* resident set size before last swap */
 303         struct aio      *p_aio;         /* pointer to async I/O struct */
 304         struct itimer   **p_itimer;     /* interval timers */
 305         timeout_id_t    p_alarmid;      /* alarm's timeout id */
 306         caddr_t         p_usrstack;     /* top of the process stack */
 307         uint_t          p_stkprot;      /* stack memory protection */
 308         uint_t          p_datprot;      /* data memory protection */
 309         model_t         p_model;        /* data model determined at exec time */
 310         struct lwpchan_data *p_lcp;     /* lwpchan cache */
 311         kmutex_t        p_lcp_lock;     /* protects assignments to p_lcp */
 312         utrap_handler_t *p_utraps;      /* pointer to user trap handlers */
 313         struct corectl_path     *p_corefile;    /* pattern for core file */
 314         struct task     *p_task;        /* our containing task */
 315         struct proc     *p_taskprev;    /* ptr to previous process in task */
 316         struct proc     *p_tasknext;    /* ptr to next process in task */
 317         kmutex_t        p_sc_lock;      /* protects p_pagep */
 318         struct sc_page_ctl *p_pagep;    /* list of process's shared pages */
 319         struct rctl_set *p_rctls;       /* resource controls for this process */
 320         rlim64_t        p_stk_ctl;      /* currently enforced stack size */
 321         rlim64_t        p_fsz_ctl;      /* currently enforced file size */
 322         rlim64_t        p_vmem_ctl;     /* currently enforced addr-space size */
 323         rlim64_t        p_fno_ctl;      /* currently enforced file-desc limit */
 324         pid_t           p_ancpid;       /* ancestor pid, used by exacct */
 325         struct itimerval p_realitimer;  /* real interval timer */
 326         timeout_id_t    p_itimerid;     /* real interval timer's timeout id */
 327         struct corectl_content *p_content;      /* content of core file */
 328 
 329         avl_tree_t      p_ct_held;      /* held contracts */
 330         struct ct_equeue **p_ct_equeue; /* process-type event queues */
 331 
 332         struct cont_process *p_ct_process; /* process contract */
 333         list_node_t     p_ct_member;    /* process contract membership */
 334         sigqueue_t      *p_killsqp;     /* sigqueue pointer for SIGKILL */
 335 
 336         int             p_dtrace_probes; /* are there probes for this proc? */
 337         uint64_t        p_dtrace_count; /* number of DTrace tracepoints */
 338                                         /* (protected by P_PR_LOCK) */
 339         void            *p_dtrace_helpers; /* DTrace helpers, if any */
 340         struct pool     *p_pool;        /* pointer to containing pool */
 341         kcondvar_t      p_poolcv;       /* synchronization with pools */
 342         uint_t          p_poolcnt;      /* # threads inside pool barrier */
 343         uint_t          p_poolflag;     /* pool-related flags (see below) */
 344         uintptr_t       p_portcnt;      /* event ports counter */
 345         struct zone     *p_zone;        /* zone in which process lives */
 346         struct vnode    *p_execdir;     /* directory that p_exec came from */
 347         struct brand    *p_brand;       /* process's brand  */
 348         void            *p_brand_data;  /* per-process brand state */
 349 
 350         /* additional lock to protect p_sessp (but not its contents) */
 351         kmutex_t p_splock;
 352         rctl_qty_t      p_locked_mem;   /* locked memory charged to proc */
 353                                         /* protected by p_lock */
 354         rctl_qty_t      p_crypto_mem;   /* /dev/crypto memory charged to proc */
 355                                         /* protected by p_lock */
 356         clock_t p_ttime;                /* buffered task time */
 357 
 358         /*
 359          * The user structure
 360          */
 361         struct user p_user;             /* (see sys/user.h) */
 362 } proc_t;
 363 
 364 #define PROC_T                          /* headers relying on proc_t are OK */
 365 
 366 #ifdef _KERNEL
 367 
 368 /* active process chain */
 369 
 370 extern proc_t *practive;
 371 
 372 /* Well known processes */
 373 
 374 extern proc_t *proc_sched;              /* memory scheduler */
 375 extern proc_t *proc_init;               /* init */
 376 extern proc_t *proc_pageout;            /* pageout daemon */
 377 extern proc_t *proc_fsflush;            /* filesystem sync-er */
 378 
 379 #endif /* _KERNEL */
 380 
 381 /*
 382  * Stuff to keep track of the number of processes each uid has.
 383  * It is tracked on a per-zone basis; that is, if users in different
 384  * zones have the same uid, they are tracked separately.
 385  *
 386  * A structure is allocated when a new <uid,zoneid> pair shows up
 387  * There is a hash to find each structure.
 388  */
 389 struct  upcount {
 390         struct  upcount *up_next;
 391         uid_t           up_uid;
 392         zoneid_t        up_zoneid;
 393         uint_t          up_count;
 394 };
 395 
 396 /* process ID info */
 397 
 398 struct pid {
 399         unsigned int pid_prinactive :1;
 400         unsigned int pid_pgorphaned :1;
 401         unsigned int pid_padding :6;    /* used to be pid_ref, now an int */
 402         unsigned int pid_prslot :24;
 403         pid_t pid_id;
 404         struct proc *pid_pglink;
 405         struct proc *pid_pgtail;
 406         struct pid *pid_link;
 407         uint_t pid_ref;
 408 };
 409 
 410 #define p_pgrp p_pgidp->pid_id
 411 #define p_pid  p_pidp->pid_id
 412 #define p_slot p_pidp->pid_prslot
 413 #define p_detached p_pgidp->pid_pgorphaned
 414 
 415 #define PID_HOLD(pidp)  ASSERT(MUTEX_HELD(&pidlock)); \
 416                         ++(pidp)->pid_ref;
 417 #define PID_RELE(pidp)  ASSERT(MUTEX_HELD(&pidlock)); \
 418                         (pidp)->pid_ref > 1 ? \
 419                                 --(pidp)->pid_ref : pid_rele(pidp);
 420 
 421 /*
 422  * Structure containing persistent process lock.  The structure and
 423  * macro allow "mutex_enter(&p->p_lock)" to continue working.
 424  */
 425 struct plock {
 426         kmutex_t pl_lock;
 427 };
 428 #define p_lock  p_lockp->pl_lock
 429 
 430 #ifdef _KERNEL
 431 extern proc_t p0;               /* process 0 */
 432 extern struct plock p0lock;     /* p0's plock */
 433 extern struct pid pid0;         /* p0's pid */
 434 
 435 /* pid_allocate() flags */
 436 #define PID_ALLOC_PROC  0x0001  /* assign a /proc slot as well */
 437 
 438 #endif /* _KERNEL */
 439 
 440 /* stat codes */
 441 
 442 #define SSLEEP  1               /* awaiting an event */
 443 #define SRUN    2               /* runnable */
 444 #define SZOMB   3               /* process terminated but not waited for */
 445 #define SSTOP   4               /* process stopped by debugger */
 446 #define SIDL    5               /* intermediate state in process creation */
 447 #define SONPROC 6               /* process is being run on a processor */
 448 #define SWAIT   7               /* process is waiting to become runnable */
 449 
 450 /* p_pidflag codes */
 451 #define CLDPEND         0x0001  /* have yet to post a SIGCHLD to the parent */
 452 #define CLDCONT         0x0002  /* child has notified parent of CLD_CONTINUED */
 453 #define CLDNOSIGCHLD    0x0004  /* do not post SIGCHLD when child terminates */
 454 #define CLDWAITPID      0x0008  /* only waitid(P_PID, pid) can reap the child */
 455 
 456 /* p_proc_flag codes -- these flags are mostly private to /proc */
 457 #define P_PR_TRACE      0x0001  /* signal, fault or syscall tracing via /proc */
 458 #define P_PR_PTRACE     0x0002  /* ptrace() compatibility mode */
 459 #define P_PR_FORK       0x0004  /* child inherits tracing flags */
 460 #define P_PR_LOCK       0x0008  /* process locked by /proc */
 461 #define P_PR_ASYNC      0x0010  /* asynchronous stopping via /proc */
 462 #define P_PR_EXEC       0x0020  /* process is in exec() */
 463 #define P_PR_BPTADJ     0x0040  /* adjust pc on breakpoint trap */
 464 #define P_PR_RUNLCL     0x0080  /* set process running on last /proc close */
 465 #define P_PR_KILLCL     0x0100  /* kill process on last /proc close */
 466 
 467 /*
 468  * p_flag codes
 469  *
 470  * note that two of these flags, SMSACCT and SSYS, are exported to /proc's
 471  * psinfo_t.p_flag field.  Historically, all were, but since they are
 472  * implementation dependant, we only export the ones people have come to
 473  * rely upon.  Hence, the bit positions of SSYS and SMSACCT should not be
 474  * altered.
 475  */
 476 #define SSYS       0x00000001   /* system (resident) process */
 477 #define SEXITING   0x00000002   /* process is exiting */
 478 #define SITBUSY    0x00000004   /* setitimer(ITIMER_REAL) in progress */
 479 #define SFORKING   0x00000008   /* tells called functions that we're forking */
 480 #define SWATCHOK   0x00000010   /* proc in acceptable state for watchpoints */
 481 #define SKILLED    0x00000100   /* SIGKILL has been posted to the process */
 482 #define SSCONT     0x00000200   /* SIGCONT has been posted to the process */
 483 #define SZONETOP   0x00000400   /* process has no valid PPID in its zone */
 484 #define SEXTKILLED 0x00000800   /* SKILLED is from another contract */
 485 #define SUGID      0x00002000   /* process was result of set[ug]id exec */
 486 #define SEXECED    0x00004000   /* this process has execed */
 487 #define SJCTL      0x00010000   /* SIGCHLD sent when children stop/continue */
 488 #define SNOWAIT    0x00020000   /* children never become zombies */
 489 #define SVFORK     0x00040000   /* child of vfork that has not yet exec'd */
 490 #define SVFWAIT    0x00080000   /* parent of vfork waiting for child to exec */
 491 #define SEXITLWPS  0x00100000   /* have lwps exit within the process */
 492 #define SHOLDFORK  0x00200000   /* hold lwps where they're cloneable */
 493 #define SHOLDFORK1 0x00800000   /* hold lwps in place (not cloning) */
 494 #define SCOREDUMP  0x01000000   /* process is dumping core */
 495 #define SMSACCT    0x02000000   /* process is keeping micro-state accounting */
 496 #define SLWPWRAP   0x04000000   /* process has wrapped its lwp ids */
 497 #define SAUTOLPG   0x08000000   /* kernel controls page sizes */
 498 #define SNOCD      0x10000000   /* new creds from VSxID, do not coredump */
 499 #define SHOLDWATCH 0x20000000   /* hold lwps for watchpoint operation */
 500 #define SMSFORK    0x40000000   /* child inherits micro-state accounting */
 501 #define SDOCORE    0x80000000   /* process will attempt to dump core */
 502 
 503 /*
 504  * p_poolflag codes
 505  *
 506  * These flags are used to synchronize with the pool subsystem to allow
 507  * re-binding of processes to new pools.
 508  */
 509 #define PBWAIT          0x0001  /* process should wait outside fork/exec/exit */
 510 #define PEXITED         0x0002  /* process exited and about to become zombie */
 511 
 512 /* Macro to convert proc pointer to a user block pointer */
 513 #define PTOU(p)         (&(p)->p_user)
 514 
 515 #define tracing(p, sig) (sigismember(&(p)->p_sigmask, sig))
 516 
 517 /* Macro to reduce unnecessary calls to issig() */
 518 
 519 #define ISSIG(t, why)   ISSIG_FAST(t, ttolwp(t), ttoproc(t), why)
 520 
 521 /*
 522  * Fast version of ISSIG.
 523  *      1. uses register pointers to lwp and proc instead of reloading them.
 524  *      2. uses bit-wise OR of tests, since the usual case is that none of them
 525  *         are true, this saves orcc's and branches.
 526  *      3. load the signal flags instead of using sigisempty() macro which does
 527  *         a branch to convert to boolean.
 528  */
 529 #define ISSIG_FAST(t, lwp, p, why)              \
 530         (ISSIG_PENDING(t, lwp, p) && issig(why))
 531 
 532 #define ISSIG_PENDING(t, lwp, p)                \
 533         ((lwp)->lwp_cursig |                 \
 534             sigcheck((p), (t)) |                \
 535             (p)->p_stopsig |                 \
 536             (t)->t_dtrace_stop |             \
 537             (t)->t_dtrace_sig |                      \
 538             ((t)->t_proc_flag & (TP_PRSTOP|TP_HOLDLWP|TP_CHKPT|TP_PAUSE)) | \
 539             ((p)->p_flag & (SEXITLWPS|SKILLED|SHOLDFORK1|SHOLDWATCH)))
 540 
 541 #define ISSTOP(sig)      (u.u_signal[sig-1] == SIG_DFL && \
 542                                 sigismember(&stopdefault, sig))
 543 
 544 #define ISHOLD(p)       ((p)->p_flag & SHOLDFORK)
 545 
 546 #define MUSTRETURN(p, t)        (ISHOLD(p) | (t)->t_activefd.a_stale)
 547 
 548 /*
 549  * Determine if there are any watchpoints active in the process.
 550  */
 551 #define pr_watch_active(p)      (avl_numnodes(&(p)->p_warea) != 0)
 552 
 553 /* Reasons for calling issig() */
 554 
 555 #define FORREAL         0       /* Usual side-effects */
 556 #define JUSTLOOKING     1       /* Don't stop the process */
 557 
 558 /* 'what' values for stop(PR_SUSPENDED, what) */
 559 #define SUSPEND_NORMAL  0
 560 #define SUSPEND_PAUSE   1
 561 
 562 /* pseudo-flag to lwp_create() */
 563 #define NOCLASS (-1)
 564 
 565 /* unused scheduling class ID */
 566 #define CLASS_UNUSED    (-2)
 567 
 568 /* LWP stats updated via lwp_stats_update() */
 569 typedef enum {
 570         LWP_STAT_INBLK,
 571         LWP_STAT_OUBLK,
 572         LWP_STAT_MSGRCV,
 573         LWP_STAT_MSGSND
 574 } lwp_stat_id_t;
 575 
 576 typedef struct prkillinfo {
 577         int32_t prk_error;              /* errno */
 578         int32_t prk_pad;                /* pad */
 579         siginfo_t prk_info;             /* siginfo of killing signal */
 580 } prkillinfo_t;
 581 
 582 #ifdef _KERNEL
 583 
 584 /* user profiling functions */
 585 
 586 extern void profil_tick(uintptr_t);
 587 
 588 /* process management functions */
 589 
 590 extern int newproc(void (*)(), caddr_t, id_t, int, struct contract **, pid_t);
 591 extern void vfwait(pid_t);
 592 extern void proc_detach(proc_t *);
 593 extern void freeproc(proc_t *);
 594 extern void setrun(kthread_t *);
 595 extern void setrun_locked(kthread_t *);
 596 extern void exit(int, int);
 597 extern int proc_exit(int, int);
 598 extern void proc_is_exiting(proc_t *);
 599 extern void relvm(void);
 600 extern void add_ns(proc_t *, proc_t *);
 601 extern void delete_ns(proc_t *, proc_t *);
 602 extern void upcount_inc(uid_t, zoneid_t);
 603 extern void upcount_dec(uid_t, zoneid_t);
 604 extern int upcount_get(uid_t, zoneid_t);
 605 #if defined(__x86)
 606 extern selector_t setup_thrptr(proc_t *, uintptr_t);
 607 extern void deferred_singlestep_trap(caddr_t);
 608 #endif
 609 
 610 extern void sigcld(proc_t *, sigqueue_t *);
 611 extern void sigcld_delete(k_siginfo_t *);
 612 extern void sigcld_repost(void);
 613 extern int fsig(k_sigset_t *, kthread_t *);
 614 extern void psig(void);
 615 extern void stop(int, int);
 616 extern int stop_on_fault(uint_t, k_siginfo_t *);
 617 extern int issig(int);
 618 extern int jobstopped(proc_t *);
 619 extern void psignal(proc_t *, int);
 620 extern void tsignal(kthread_t *, int);
 621 extern void sigtoproc(proc_t *, kthread_t *, int);
 622 extern void trapsig(k_siginfo_t *, int);
 623 extern void realsigprof(int, int, int);
 624 extern int eat_signal(kthread_t *, int);
 625 extern int signal_is_blocked(kthread_t *, int);
 626 extern int sigcheck(proc_t *, kthread_t *);
 627 extern void sigdefault(proc_t *);
 628 
 629 extern void pid_setmin(void);
 630 extern pid_t pid_allocate(proc_t *, pid_t, int);
 631 extern int pid_rele(struct pid *);
 632 extern void pid_exit(proc_t *, struct task *);
 633 extern void proc_entry_free(struct pid *);
 634 extern proc_t *prfind(pid_t);
 635 extern proc_t *prfind_zone(pid_t, zoneid_t);
 636 extern proc_t *pgfind(pid_t);
 637 extern proc_t *pgfind_zone(pid_t, zoneid_t);
 638 extern proc_t *sprlock(pid_t);
 639 extern proc_t *sprlock_zone(pid_t, zoneid_t);
 640 extern int sprtrylock_proc(proc_t *);
 641 extern void sprwaitlock_proc(proc_t *);
 642 extern void sprlock_proc(proc_t *);
 643 extern void sprunlock(proc_t *);
 644 extern void pid_init(void);
 645 extern proc_t *pid_entry(int);
 646 extern int pid_slot(proc_t *);
 647 extern void signal(pid_t, int);
 648 extern void prsignal(struct pid *, int);
 649 extern int uread(proc_t *, void *, size_t, uintptr_t);
 650 extern int uwrite(proc_t *, void *, size_t, uintptr_t);
 651 
 652 extern void pgsignal(struct pid *, int);
 653 extern void pgjoin(proc_t *, struct pid *);
 654 extern void pgcreate(proc_t *);
 655 extern void pgexit(proc_t *);
 656 extern void pgdetach(proc_t *);
 657 extern int pgmembers(pid_t);
 658 
 659 extern  void    init_mstate(kthread_t *, int);
 660 extern  int     new_mstate(kthread_t *, int);
 661 extern  void    restore_mstate(kthread_t *);
 662 extern  void    term_mstate(kthread_t *);
 663 extern  void    estimate_msacct(kthread_t *, hrtime_t);
 664 extern  void    disable_msacct(proc_t *);
 665 extern  hrtime_t mstate_aggr_state(proc_t *, int);
 666 extern  hrtime_t mstate_thread_onproc_time(kthread_t *);
 667 extern  void    mstate_systhread_times(kthread_t *, hrtime_t *, hrtime_t *);
 668 extern  void    syscall_mstate(int, int);
 669 
 670 extern  uint_t  cpu_update_pct(kthread_t *, hrtime_t);
 671 
 672 extern void     set_proc_pre_sys(proc_t *p);
 673 extern void     set_proc_post_sys(proc_t *p);
 674 extern void     set_proc_sys(proc_t *p);
 675 extern void     set_proc_ast(proc_t *p);
 676 extern void     set_all_proc_sys(void);
 677 extern void     set_all_zone_usr_proc_sys(zoneid_t);
 678 
 679 /* thread function prototypes */
 680 
 681 extern  kthread_t       *thread_create(
 682         caddr_t         stk,
 683         size_t          stksize,
 684         void            (*proc)(),
 685         void            *arg,
 686         size_t          len,
 687         proc_t          *pp,
 688         int             state,
 689         pri_t           pri);
 690 extern  void    thread_exit(void) __NORETURN;
 691 extern  void    thread_free(kthread_t *);
 692 extern  void    thread_rele(kthread_t *);
 693 extern  void    thread_join(kt_did_t);
 694 extern  int     reaper(void);
 695 extern  void    installctx(kthread_t *, void *, void (*)(), void (*)(),
 696     void (*)(), void (*)(), void (*)(), void (*)());
 697 extern  int     removectx(kthread_t *, void *, void (*)(), void (*)(),
 698     void (*)(), void (*)(), void (*)(), void (*)());
 699 extern  void    savectx(kthread_t *);
 700 extern  void    restorectx(kthread_t *);
 701 extern  void    forkctx(kthread_t *, kthread_t *);
 702 extern  void    lwp_createctx(kthread_t *, kthread_t *);
 703 extern  void    exitctx(kthread_t *);
 704 extern  void    freectx(kthread_t *, int);
 705 extern  void    installpctx(proc_t *, void *, void (*)(), void (*)(),
 706     void (*)(), void (*)(), void (*)());
 707 extern  int     removepctx(proc_t *, void *, void (*)(), void (*)(),
 708     void (*)(), void (*)(), void (*)());
 709 extern  void    savepctx(proc_t *);
 710 extern  void    restorepctx(proc_t *);
 711 extern  void    forkpctx(proc_t *, proc_t *);
 712 extern  void    exitpctx(proc_t *);
 713 extern  void    freepctx(proc_t *, int);
 714 extern  kthread_t *thread_unpin(void);
 715 extern  void    thread_init(void);
 716 extern  void    thread_load(kthread_t *, void (*)(), caddr_t, size_t);
 717 
 718 extern  void    tsd_create(uint_t *, void (*)(void *));
 719 extern  void    tsd_destroy(uint_t *);
 720 extern  void    *tsd_getcreate(uint_t *, void (*)(void *), void *(*)(void));
 721 extern  void    *tsd_get(uint_t);
 722 extern  int     tsd_set(uint_t, void *);
 723 extern  void    tsd_exit(void);
 724 extern  void    *tsd_agent_get(kthread_t *, uint_t);
 725 extern  int     tsd_agent_set(kthread_t *, uint_t, void *);
 726 
 727 /* lwp function prototypes */
 728 
 729 extern kthread_t *lwp_kernel_create(proc_t *, void (*)(), void *, int, pri_t);
 730 extern  klwp_t          *lwp_create(
 731         void            (*proc)(),
 732         caddr_t         arg,
 733         size_t          len,
 734         proc_t          *p,
 735         int             state,
 736         int             pri,
 737         const k_sigset_t *smask,
 738         int             cid,
 739         id_t            lwpid);
 740 extern  kthread_t *idtot(proc_t *, id_t);
 741 extern  void    lwp_hash_in(proc_t *, lwpent_t *, tidhash_t *, uint_t, int);
 742 extern  void    lwp_hash_out(proc_t *, id_t);
 743 extern  lwpdir_t *lwp_hash_lookup(proc_t *, id_t);
 744 extern  lwpdir_t *lwp_hash_lookup_and_lock(proc_t *, id_t, kmutex_t **);
 745 extern  void    lwp_create_done(kthread_t *);
 746 extern  void    lwp_exit(void);
 747 extern  void    lwp_pcb_exit(void);
 748 extern  void    lwp_cleanup(void);
 749 extern  int     lwp_suspend(kthread_t *);
 750 extern  void    lwp_continue(kthread_t *);
 751 extern  void    holdlwp(void);
 752 extern  void    stoplwp(void);
 753 extern  int     holdlwps(int);
 754 extern  int     holdwatch(void);
 755 extern  void    pokelwps(proc_t *);
 756 extern  void    continuelwps(proc_t *);
 757 extern  int     exitlwps(int);
 758 extern  void    lwp_ctmpl_copy(klwp_t *, klwp_t *);
 759 extern  void    lwp_ctmpl_clear(klwp_t *);
 760 extern  klwp_t  *forklwp(klwp_t *, proc_t *, id_t);
 761 extern  void    lwp_load(klwp_t *, gregset_t, uintptr_t);
 762 extern  void    lwp_setrval(klwp_t *, int, int);
 763 extern  void    lwp_forkregs(klwp_t *, klwp_t *);
 764 extern  void    lwp_freeregs(klwp_t *, int);
 765 extern  caddr_t lwp_stk_init(klwp_t *, caddr_t);
 766 extern  void    lwp_stk_cache_init(void);
 767 extern  void    lwp_stk_fini(klwp_t *);
 768 extern  void    lwp_installctx(klwp_t *);
 769 extern  void    lwp_rtt(void);
 770 extern  void    lwp_rtt_initial(void);
 771 extern  int     lwp_setprivate(klwp_t *, int, uintptr_t);
 772 extern  void    lwp_stat_update(lwp_stat_id_t, long);
 773 extern  void    lwp_attach_brand_hdlrs(klwp_t *);
 774 extern  void    lwp_detach_brand_hdlrs(klwp_t *);
 775 
 776 #if defined(__sparcv9)
 777 extern  void    lwp_mmodel_newlwp(void);
 778 extern  void    lwp_mmodel_shared_as(caddr_t, size_t);
 779 #define LWP_MMODEL_NEWLWP()             lwp_mmodel_newlwp()
 780 #define LWP_MMODEL_SHARED_AS(addr, sz)  lwp_mmodel_shared_as((addr), (sz))
 781 #else
 782 #define LWP_MMODEL_NEWLWP()
 783 #define LWP_MMODEL_SHARED_AS(addr, sz)
 784 #endif
 785 
 786 /*
 787  * Signal queue function prototypes. Must be here due to header ordering
 788  * dependencies.
 789  */
 790 extern void sigqfree(proc_t *);
 791 extern void siginfofree(sigqueue_t *);
 792 extern void sigdeq(proc_t *, kthread_t *, int, sigqueue_t **);
 793 extern void sigdelq(proc_t *, kthread_t *, int);
 794 extern void sigaddq(proc_t *, kthread_t *, k_siginfo_t *, int);
 795 extern void sigaddqa(proc_t *, kthread_t *, sigqueue_t *);
 796 extern void sigqsend(int, proc_t *, kthread_t *, sigqueue_t *);
 797 extern void sigdupq(proc_t *, proc_t *);
 798 extern int sigwillqueue(int, int);
 799 extern sigqhdr_t *sigqhdralloc(size_t, uint_t);
 800 extern sigqueue_t *sigqalloc(sigqhdr_t *);
 801 extern void sigqhdrfree(sigqhdr_t *);
 802 extern sigqueue_t *sigappend(k_sigset_t *, sigqueue_t *,
 803         k_sigset_t *, sigqueue_t *);
 804 extern sigqueue_t *sigprepend(k_sigset_t *, sigqueue_t *,
 805         k_sigset_t *, sigqueue_t *);
 806 extern void winfo(proc_t *, k_siginfo_t *, int);
 807 extern int wstat(int, int);
 808 extern int sendsig(int, k_siginfo_t *, void (*)());
 809 #if defined(_SYSCALL32_IMPL)
 810 extern int sendsig32(int, k_siginfo_t *, void (*)());
 811 #endif
 812 
 813 #endif  /* _KERNEL */
 814 
 815 #ifdef  __cplusplus
 816 }
 817 #endif
 818 
 819 #endif  /* _SYS_PROC_H */