The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/user.h

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    1 /*-
    2  * Copyright (c) 1982, 1986, 1989, 1991, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 4. Neither the name of the University nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      @(#)user.h      8.2 (Berkeley) 9/23/93
   30  * $FreeBSD: releng/6.0/sys/sys/user.h 147188 2005-06-09 19:09:02Z gad $
   31  */
   32 
   33 #ifndef _SYS_USER_H_
   34 #define _SYS_USER_H_
   35 
   36 #include <machine/pcb.h>
   37 #ifndef _KERNEL
   38 /* stuff that *used* to be included by user.h, or is now needed */
   39 #include <sys/errno.h>
   40 #include <sys/time.h>
   41 #include <sys/resource.h>
   42 #include <sys/ucred.h>
   43 #include <sys/uio.h>
   44 #include <sys/queue.h>
   45 #include <sys/_lock.h>
   46 #include <sys/_mutex.h>
   47 #include <sys/proc.h>
   48 #include <vm/vm.h>              /* XXX */
   49 #include <vm/vm_param.h>        /* XXX */
   50 #include <vm/pmap.h>            /* XXX */
   51 #include <vm/vm_map.h>          /* XXX */
   52 #endif /* !_KERNEL */
   53 #ifndef _SYS_RESOURCEVAR_H_
   54 #include <sys/resourcevar.h>
   55 #endif
   56 #ifndef _SYS_SIGNALVAR_H_
   57 #include <sys/signalvar.h>
   58 #endif
   59 
   60 /*
   61  * KERN_PROC subtype ops return arrays of selected proc structure entries:
   62  *
   63  * This struct includes several arrays of spare space, with different arrays
   64  * for different standard C-types.  When adding new variables to this struct,
   65  * the space for byte-aligned data should be taken from the ki_sparestring,
   66  * pointers from ki_spareptrs, word-aligned data from ki_spareints, and
   67  * doubleword-aligned data from ki_sparelongs.  Make sure the space for new
   68  * variables come from the array which matches the size and alignment of
   69  * those variables on ALL hardware platforms, and then adjust the appropriate
   70  * KI_NSPARE_* value(s) to match.
   71  *
   72  * Always verify that sizeof(struct kinfo_proc) == KINFO_PROC_SIZE on all
   73  * platforms after you have added new variables.  Note that if you change
   74  * the value of KINFO_PROC_SIZE, then many userland programs will stop
   75  * working until they are recompiled!
   76  *
   77  * Once you have added the new field, you will need to add code to initialize
   78  * it in two places: function fill_kinfo_proc in sys/kern/kern_proc.c and
   79  * function kvm_proclist in lib/libkvm/kvm_proc.c .
   80  */
   81 #define KI_NSPARE_INT   10
   82 #define KI_NSPARE_LONG  12
   83 #define KI_NSPARE_PTR   7
   84 
   85 #ifdef __alpha__
   86 #define KINFO_PROC_SIZE 1088
   87 #endif
   88 #ifdef __amd64__
   89 #define KINFO_PROC_SIZE 1088
   90 #endif
   91 #ifdef __arm__
   92 #define KINFO_PROC_SIZE 768             /* value has not been tested... */
   93 #endif
   94 #ifdef __ia64__
   95 #define KINFO_PROC_SIZE 1088
   96 #endif
   97 #ifdef __i386__
   98 #define KINFO_PROC_SIZE 768
   99 #endif
  100 #ifdef __powerpc__
  101 #define KINFO_PROC_SIZE 768
  102 #endif
  103 #ifdef __sparc64__
  104 #define KINFO_PROC_SIZE 1088
  105 #endif
  106 #ifndef KINFO_PROC_SIZE
  107 #error "Unknown architecture"
  108 #endif
  109 
  110 #define WMESGLEN        8               /* size of returned wchan message */
  111 #define LOCKNAMELEN     8               /* size of returned lock name */
  112 #define OCOMMLEN        16              /* size of returned ki_ocomm name */
  113 #define COMMLEN         19              /* size of returned ki_comm name */
  114 #define KI_EMULNAMELEN  16              /* size of returned ki_emul */
  115 #define KI_NGROUPS      16              /* number of groups in ki_groups */
  116 #define LOGNAMELEN      17              /* size of returned ki_login */
  117 
  118 struct kinfo_proc {
  119         int     ki_structsize;          /* size of this structure */
  120         int     ki_layout;              /* reserved: layout identifier */
  121         struct  pargs *ki_args;         /* address of command arguments */
  122         struct  proc *ki_paddr;         /* address of proc */
  123         struct  user *ki_addr;          /* kernel virtual addr of u-area */
  124         struct  vnode *ki_tracep;       /* pointer to trace file */
  125         struct  vnode *ki_textvp;       /* pointer to executable file */
  126         struct  filedesc *ki_fd;        /* pointer to open file info */
  127         struct  vmspace *ki_vmspace;    /* pointer to kernel vmspace struct */
  128         void    *ki_wchan;              /* sleep address */
  129         pid_t   ki_pid;                 /* Process identifier */
  130         pid_t   ki_ppid;                /* parent process id */
  131         pid_t   ki_pgid;                /* process group id */
  132         pid_t   ki_tpgid;               /* tty process group id */
  133         pid_t   ki_sid;                 /* Process session ID */
  134         pid_t   ki_tsid;                /* Terminal session ID */
  135         short   ki_jobc;                /* job control counter */
  136         short   ki_spare_short1;        /* unused (just here for alignment) */
  137         dev_t   ki_tdev;                /* controlling tty dev */
  138         sigset_t ki_siglist;            /* Signals arrived but not delivered */
  139         sigset_t ki_sigmask;            /* Current signal mask */
  140         sigset_t ki_sigignore;          /* Signals being ignored */
  141         sigset_t ki_sigcatch;           /* Signals being caught by user */
  142         uid_t   ki_uid;                 /* effective user id */
  143         uid_t   ki_ruid;                /* Real user id */
  144         uid_t   ki_svuid;               /* Saved effective user id */
  145         gid_t   ki_rgid;                /* Real group id */
  146         gid_t   ki_svgid;               /* Saved effective group id */
  147         short   ki_ngroups;             /* number of groups */
  148         short   ki_spare_short2;        /* unused (just here for alignment) */
  149         gid_t   ki_groups[KI_NGROUPS];  /* groups */
  150         vm_size_t ki_size;              /* virtual size */
  151         segsz_t ki_rssize;              /* current resident set size in pages */
  152         segsz_t ki_swrss;               /* resident set size before last swap */
  153         segsz_t ki_tsize;               /* text size (pages) XXX */
  154         segsz_t ki_dsize;               /* data size (pages) XXX */
  155         segsz_t ki_ssize;               /* stack size (pages) */
  156         u_short ki_xstat;               /* Exit status for wait & stop signal */
  157         u_short ki_acflag;              /* Accounting flags */
  158         fixpt_t ki_pctcpu;              /* %cpu for process during ki_swtime */
  159         u_int   ki_estcpu;              /* Time averaged value of ki_cpticks */
  160         u_int   ki_slptime;             /* Time since last blocked */
  161         u_int   ki_swtime;              /* Time swapped in or out */
  162         int     ki_spareint1;           /* unused (just here for alignment) */
  163         u_int64_t ki_runtime;           /* Real time in microsec */
  164         struct  timeval ki_start;       /* starting time */
  165         struct  timeval ki_childtime;   /* time used by process children */
  166         long    ki_flag;                /* P_* flags */
  167         long    ki_kiflag;              /* KI_* flags (below) */
  168         int     ki_traceflag;           /* Kernel trace points */
  169         char    ki_stat;                /* S* process status */
  170         signed char ki_nice;            /* Process "nice" value */
  171         char    ki_lock;                /* Process lock (prevent swap) count */
  172         char    ki_rqindex;             /* Run queue index */
  173         u_char  ki_oncpu;               /* Which cpu we are on */
  174         u_char  ki_lastcpu;             /* Last cpu we were on */
  175         char    ki_ocomm[OCOMMLEN+1];   /* command name */
  176         char    ki_wmesg[WMESGLEN+1];   /* wchan message */
  177         char    ki_login[LOGNAMELEN+1]; /* setlogin name */
  178         char    ki_lockname[LOCKNAMELEN+1]; /* lock name */
  179         char    ki_comm[COMMLEN+1];     /* command name */
  180         char    ki_emul[KI_EMULNAMELEN+1];  /* emulation name */
  181         /*
  182          * When adding new variables, take space for char-strings from the
  183          * front of ki_sparestrings, and ints from the end of ki_spareints.
  184          * That way the spare room from both arrays will remain contiguous.
  185          */
  186         char    ki_sparestrings[68];    /* spare string space */
  187         int     ki_spareints[KI_NSPARE_INT];    /* spare room for growth */
  188         int     ki_jid;                 /* Process jail ID */
  189         int     ki_numthreads;          /* XXXKSE number of threads in total */
  190         lwpid_t ki_tid;                 /* XXXKSE thread id */
  191         struct  priority ki_pri;        /* process priority */
  192         struct  rusage ki_rusage;       /* process rusage statistics */
  193         /* XXX - most fields in ki_rusage_ch are not (yet) filled in */
  194         struct  rusage ki_rusage_ch;    /* rusage of children processes */
  195         struct  pcb *ki_pcb;            /* kernel virtual addr of pcb */
  196         void    *ki_kstack;             /* kernel virtual addr of stack */
  197         void    *ki_udata;              /* User convenience pointer */
  198         /*
  199          * When adding new variables, take space for pointers from the
  200          * front of ki_spareptrs, and longs from the end of ki_sparelongs.
  201          * That way the spare room from both arrays will remain contiguous.
  202          */
  203         void    *ki_spareptrs[KI_NSPARE_PTR];   /* spare room for growth */
  204         long    ki_sparelongs[KI_NSPARE_LONG];  /* spare room for growth */
  205         long    ki_sflag;               /* PS_* flags */
  206         long    ki_tdflags;             /* XXXKSE kthread flag */
  207 };
  208 void fill_kinfo_proc(struct proc *, struct kinfo_proc *);
  209 /* XXX - the following two defines are temporary */
  210 #define ki_childstime   ki_rusage_ch.ru_stime
  211 #define ki_childutime   ki_rusage_ch.ru_utime
  212 
  213 /* ki_sessflag values */
  214 #define KI_CTTY         0x00000001      /* controlling tty vnode active */
  215 #define KI_SLEADER      0x00000002      /* session leader */
  216 #define KI_LOCKBLOCK    0x00000004      /* proc blocked on lock ki_lockname */
  217 
  218 /*
  219  * This used to be the per-process structure containing data that
  220  * isn't needed in core when the process is swapped out, but now it
  221  * remains only for the benefit of a.out core dumps.
  222  */
  223 struct user {
  224         struct  pstats u_stats;         /* *p_stats */
  225         struct  kinfo_proc u_kproc;     /* eproc */
  226 };
  227 
  228 #endif

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