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.
    4  * Copyright (c) 2007 Robert N. M. Watson
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 4. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  *      @(#)user.h      8.2 (Berkeley) 9/23/93
   32  * $FreeBSD: releng/10.2/sys/sys/user.h 262228 2014-02-19 19:11:14Z jhb $
   33  */
   34 
   35 #ifndef _SYS_USER_H_
   36 #define _SYS_USER_H_
   37 
   38 #include <machine/pcb.h>
   39 #ifndef _KERNEL
   40 /* stuff that *used* to be included by user.h, or is now needed */
   41 #include <sys/errno.h>
   42 #include <sys/time.h>
   43 #include <sys/resource.h>
   44 #include <sys/ucred.h>
   45 #include <sys/uio.h>
   46 #include <sys/queue.h>
   47 #include <sys/_lock.h>
   48 #include <sys/_mutex.h>
   49 #include <sys/proc.h>
   50 #include <vm/vm.h>              /* XXX */
   51 #include <vm/vm_param.h>        /* XXX */
   52 #include <vm/pmap.h>            /* XXX */
   53 #include <vm/vm_map.h>          /* XXX */
   54 #endif /* !_KERNEL */
   55 #ifndef _SYS_RESOURCEVAR_H_
   56 #include <sys/resourcevar.h>
   57 #endif
   58 #ifndef _SYS_SIGNALVAR_H_
   59 #include <sys/signalvar.h>
   60 #endif
   61 #ifndef _SYS_SOCKET_VAR_H_
   62 #include <sys/socket.h>
   63 #endif
   64 #include <sys/caprights.h>
   65 
   66 /*
   67  * KERN_PROC subtype ops return arrays of selected proc structure entries:
   68  *
   69  * This struct includes several arrays of spare space, with different arrays
   70  * for different standard C-types.  When adding new variables to this struct,
   71  * the space for byte-aligned data should be taken from the ki_sparestring,
   72  * pointers from ki_spareptrs, word-aligned data from ki_spareints, and
   73  * doubleword-aligned data from ki_sparelongs.  Make sure the space for new
   74  * variables come from the array which matches the size and alignment of
   75  * those variables on ALL hardware platforms, and then adjust the appropriate
   76  * KI_NSPARE_* value(s) to match.
   77  *
   78  * Always verify that sizeof(struct kinfo_proc) == KINFO_PROC_SIZE on all
   79  * platforms after you have added new variables.  Note that if you change
   80  * the value of KINFO_PROC_SIZE, then many userland programs will stop
   81  * working until they are recompiled!
   82  *
   83  * Once you have added the new field, you will need to add code to initialize
   84  * it in two places: function fill_kinfo_proc in sys/kern/kern_proc.c and
   85  * function kvm_proclist in lib/libkvm/kvm_proc.c .
   86  */
   87 #define KI_NSPARE_INT   7
   88 #define KI_NSPARE_LONG  12
   89 #define KI_NSPARE_PTR   6
   90 
   91 #ifndef _KERNEL
   92 #ifndef KINFO_PROC_SIZE
   93 #error "Unknown architecture"
   94 #endif
   95 #endif /* !_KERNEL */
   96 
   97 #define WMESGLEN        8               /* size of returned wchan message */
   98 #define LOCKNAMELEN     8               /* size of returned lock name */
   99 #define TDNAMLEN        16              /* size of returned thread name */
  100 #define COMMLEN         19              /* size of returned ki_comm name */
  101 #define KI_EMULNAMELEN  16              /* size of returned ki_emul */
  102 #define KI_NGROUPS      16              /* number of groups in ki_groups */
  103 #define LOGNAMELEN      17              /* size of returned ki_login */
  104 #define LOGINCLASSLEN   17              /* size of returned ki_loginclass */
  105 
  106 #ifndef BURN_BRIDGES
  107 #define OCOMMLEN        TDNAMLEN        
  108 #define ki_ocomm        ki_tdname
  109 #endif
  110 
  111 /* Flags for the process credential. */
  112 #define KI_CRF_CAPABILITY_MODE  0x00000001
  113 /*
  114  * Steal a bit from ki_cr_flags to indicate that the cred had more than
  115  * KI_NGROUPS groups.
  116  */
  117 #define KI_CRF_GRP_OVERFLOW     0x80000000
  118 
  119 struct kinfo_proc {
  120         int     ki_structsize;          /* size of this structure */
  121         int     ki_layout;              /* reserved: layout identifier */
  122         struct  pargs *ki_args;         /* address of command arguments */
  123         struct  proc *ki_paddr;         /* address of proc */
  124         struct  user *ki_addr;          /* kernel virtual addr of u-area */
  125         struct  vnode *ki_tracep;       /* pointer to trace file */
  126         struct  vnode *ki_textvp;       /* pointer to executable file */
  127         struct  filedesc *ki_fd;        /* pointer to open file info */
  128         struct  vmspace *ki_vmspace;    /* pointer to kernel vmspace struct */
  129         void    *ki_wchan;              /* sleep address */
  130         pid_t   ki_pid;                 /* Process identifier */
  131         pid_t   ki_ppid;                /* parent process id */
  132         pid_t   ki_pgid;                /* process group id */
  133         pid_t   ki_tpgid;               /* tty process group id */
  134         pid_t   ki_sid;                 /* Process session ID */
  135         pid_t   ki_tsid;                /* Terminal session ID */
  136         short   ki_jobc;                /* job control counter */
  137         short   ki_spare_short1;        /* unused (just here for alignment) */
  138         dev_t   ki_tdev;                /* controlling tty dev */
  139         sigset_t ki_siglist;            /* Signals arrived but not delivered */
  140         sigset_t ki_sigmask;            /* Current signal mask */
  141         sigset_t ki_sigignore;          /* Signals being ignored */
  142         sigset_t ki_sigcatch;           /* Signals being caught by user */
  143         uid_t   ki_uid;                 /* effective user id */
  144         uid_t   ki_ruid;                /* Real user id */
  145         uid_t   ki_svuid;               /* Saved effective user id */
  146         gid_t   ki_rgid;                /* Real group id */
  147         gid_t   ki_svgid;               /* Saved effective group id */
  148         short   ki_ngroups;             /* number of groups */
  149         short   ki_spare_short2;        /* unused (just here for alignment) */
  150         gid_t   ki_groups[KI_NGROUPS];  /* groups */
  151         vm_size_t ki_size;              /* virtual size */
  152         segsz_t ki_rssize;              /* current resident set size in pages */
  153         segsz_t ki_swrss;               /* resident set size before last swap */
  154         segsz_t ki_tsize;               /* text size (pages) XXX */
  155         segsz_t ki_dsize;               /* data size (pages) XXX */
  156         segsz_t ki_ssize;               /* stack size (pages) */
  157         u_short ki_xstat;               /* Exit status for wait & stop signal */
  158         u_short ki_acflag;              /* Accounting flags */
  159         fixpt_t ki_pctcpu;              /* %cpu for process during ki_swtime */
  160         u_int   ki_estcpu;              /* Time averaged value of ki_cpticks */
  161         u_int   ki_slptime;             /* Time since last blocked */
  162         u_int   ki_swtime;              /* Time swapped in or out */
  163         u_int   ki_cow;                 /* number of copy-on-write faults */
  164         u_int64_t ki_runtime;           /* Real time in microsec */
  165         struct  timeval ki_start;       /* starting time */
  166         struct  timeval ki_childtime;   /* time used by process children */
  167         long    ki_flag;                /* P_* flags */
  168         long    ki_kiflag;              /* KI_* flags (below) */
  169         int     ki_traceflag;           /* Kernel trace points */
  170         char    ki_stat;                /* S* process status */
  171         signed char ki_nice;            /* Process "nice" value */
  172         char    ki_lock;                /* Process lock (prevent swap) count */
  173         char    ki_rqindex;             /* Run queue index */
  174         u_char  ki_oncpu;               /* Which cpu we are on */
  175         u_char  ki_lastcpu;             /* Last cpu we were on */
  176         char    ki_tdname[TDNAMLEN+1];  /* thread name */
  177         char    ki_wmesg[WMESGLEN+1];   /* wchan message */
  178         char    ki_login[LOGNAMELEN+1]; /* setlogin name */
  179         char    ki_lockname[LOCKNAMELEN+1]; /* lock name */
  180         char    ki_comm[COMMLEN+1];     /* command name */
  181         char    ki_emul[KI_EMULNAMELEN+1];  /* emulation name */
  182         char    ki_loginclass[LOGINCLASSLEN+1]; /* login class */
  183         /*
  184          * When adding new variables, take space for char-strings from the
  185          * front of ki_sparestrings, and ints from the end of ki_spareints.
  186          * That way the spare room from both arrays will remain contiguous.
  187          */
  188         char    ki_sparestrings[50];    /* spare string space */
  189         int     ki_spareints[KI_NSPARE_INT];    /* spare room for growth */
  190         int     ki_flag2;               /* P2_* flags */
  191         int     ki_fibnum;              /* Default FIB number */
  192         u_int   ki_cr_flags;            /* Credential flags */
  193         int     ki_jid;                 /* Process jail ID */
  194         int     ki_numthreads;          /* XXXKSE number of threads in total */
  195         lwpid_t ki_tid;                 /* XXXKSE thread id */
  196         struct  priority ki_pri;        /* process priority */
  197         struct  rusage ki_rusage;       /* process rusage statistics */
  198         /* XXX - most fields in ki_rusage_ch are not (yet) filled in */
  199         struct  rusage ki_rusage_ch;    /* rusage of children processes */
  200         struct  pcb *ki_pcb;            /* kernel virtual addr of pcb */
  201         void    *ki_kstack;             /* kernel virtual addr of stack */
  202         void    *ki_udata;              /* User convenience pointer */
  203         struct  thread *ki_tdaddr;      /* address of thread */
  204         /*
  205          * When adding new variables, take space for pointers from the
  206          * front of ki_spareptrs, and longs from the end of ki_sparelongs.
  207          * That way the spare room from both arrays will remain contiguous.
  208          */
  209         void    *ki_spareptrs[KI_NSPARE_PTR];   /* spare room for growth */
  210         long    ki_sparelongs[KI_NSPARE_LONG];  /* spare room for growth */
  211         long    ki_sflag;               /* PS_* flags */
  212         long    ki_tdflags;             /* XXXKSE kthread flag */
  213 };
  214 void fill_kinfo_proc(struct proc *, struct kinfo_proc *);
  215 /* XXX - the following two defines are temporary */
  216 #define ki_childstime   ki_rusage_ch.ru_stime
  217 #define ki_childutime   ki_rusage_ch.ru_utime
  218 
  219 /*
  220  *  Legacy PS_ flag.  This moved to p_flag but is maintained for
  221  *  compatibility.
  222  */
  223 #define PS_INMEM        0x00001         /* Loaded into memory. */
  224 
  225 /* ki_sessflag values */
  226 #define KI_CTTY         0x00000001      /* controlling tty vnode active */
  227 #define KI_SLEADER      0x00000002      /* session leader */
  228 #define KI_LOCKBLOCK    0x00000004      /* proc blocked on lock ki_lockname */
  229 
  230 /*
  231  * This used to be the per-process structure containing data that
  232  * isn't needed in core when the process is swapped out, but now it
  233  * remains only for the benefit of a.out core dumps.
  234  */
  235 struct user {
  236         struct  pstats u_stats;         /* *p_stats */
  237         struct  kinfo_proc u_kproc;     /* eproc */
  238 };
  239 
  240 /*
  241  * The KERN_PROC_FILE sysctl allows a process to dump the file descriptor
  242  * array of another process.
  243  */
  244 #define KF_ATTR_VALID   0x0001
  245 
  246 #define KF_TYPE_NONE    0
  247 #define KF_TYPE_VNODE   1
  248 #define KF_TYPE_SOCKET  2
  249 #define KF_TYPE_PIPE    3
  250 #define KF_TYPE_FIFO    4
  251 #define KF_TYPE_KQUEUE  5
  252 #define KF_TYPE_CRYPTO  6
  253 #define KF_TYPE_MQUEUE  7
  254 #define KF_TYPE_SHM     8
  255 #define KF_TYPE_SEM     9
  256 #define KF_TYPE_PTS     10
  257 #define KF_TYPE_PROCDESC        11
  258 #define KF_TYPE_UNKNOWN 255
  259 
  260 #define KF_VTYPE_VNON   0
  261 #define KF_VTYPE_VREG   1
  262 #define KF_VTYPE_VDIR   2
  263 #define KF_VTYPE_VBLK   3
  264 #define KF_VTYPE_VCHR   4
  265 #define KF_VTYPE_VLNK   5
  266 #define KF_VTYPE_VSOCK  6
  267 #define KF_VTYPE_VFIFO  7
  268 #define KF_VTYPE_VBAD   8
  269 #define KF_VTYPE_UNKNOWN        255
  270 
  271 #define KF_FD_TYPE_CWD  -1      /* Current working directory */
  272 #define KF_FD_TYPE_ROOT -2      /* Root directory */
  273 #define KF_FD_TYPE_JAIL -3      /* Jail directory */
  274 #define KF_FD_TYPE_TRACE        -4      /* ptrace vnode */
  275 #define KF_FD_TYPE_TEXT -5      /* Text vnode */
  276 #define KF_FD_TYPE_CTTY -6      /* Controlling terminal */
  277 
  278 #define KF_FLAG_READ            0x00000001
  279 #define KF_FLAG_WRITE           0x00000002
  280 #define KF_FLAG_APPEND          0x00000004
  281 #define KF_FLAG_ASYNC           0x00000008
  282 #define KF_FLAG_FSYNC           0x00000010
  283 #define KF_FLAG_NONBLOCK        0x00000020
  284 #define KF_FLAG_DIRECT          0x00000040
  285 #define KF_FLAG_HASLOCK         0x00000080
  286 #define KF_FLAG_SHLOCK          0x00000100
  287 #define KF_FLAG_EXLOCK          0x00000200
  288 #define KF_FLAG_NOFOLLOW        0x00000400
  289 #define KF_FLAG_CREAT           0x00000800
  290 #define KF_FLAG_TRUNC           0x00001000
  291 #define KF_FLAG_EXCL            0x00002000
  292 #define KF_FLAG_EXEC            0x00004000
  293 
  294 /*
  295  * Old format.  Has variable hidden padding due to alignment.
  296  * This is a compatability hack for pre-build 7.1 packages.
  297  */
  298 #if defined(__amd64__)
  299 #define KINFO_OFILE_SIZE        1328
  300 #endif
  301 #if defined(__i386__)
  302 #define KINFO_OFILE_SIZE        1324
  303 #endif
  304 
  305 struct kinfo_ofile {
  306         int     kf_structsize;                  /* Size of kinfo_file. */
  307         int     kf_type;                        /* Descriptor type. */
  308         int     kf_fd;                          /* Array index. */
  309         int     kf_ref_count;                   /* Reference count. */
  310         int     kf_flags;                       /* Flags. */
  311         /* XXX Hidden alignment padding here on amd64 */
  312         off_t   kf_offset;                      /* Seek location. */
  313         int     kf_vnode_type;                  /* Vnode type. */
  314         int     kf_sock_domain;                 /* Socket domain. */
  315         int     kf_sock_type;                   /* Socket type. */
  316         int     kf_sock_protocol;               /* Socket protocol. */
  317         char    kf_path[PATH_MAX];      /* Path to file, if any. */
  318         struct sockaddr_storage kf_sa_local;    /* Socket address. */
  319         struct sockaddr_storage kf_sa_peer;     /* Peer address. */
  320 };
  321 
  322 #if defined(__amd64__) || defined(__i386__)
  323 /*
  324  * This size should never be changed. If you really need to, you must provide
  325  * backward ABI compatibility by allocating a new sysctl MIB that will return
  326  * the new structure. The current structure has to be returned by the current
  327  * sysctl MIB. See how it is done for the kinfo_ofile structure.
  328  */
  329 #define KINFO_FILE_SIZE 1392
  330 #endif
  331 
  332 struct kinfo_file {
  333         int             kf_structsize;          /* Variable size of record. */
  334         int             kf_type;                /* Descriptor type. */
  335         int             kf_fd;                  /* Array index. */
  336         int             kf_ref_count;           /* Reference count. */
  337         int             kf_flags;               /* Flags. */
  338         int             kf_pad0;                /* Round to 64 bit alignment. */
  339         int64_t         kf_offset;              /* Seek location. */
  340         int             kf_vnode_type;          /* Vnode type. */
  341         int             kf_sock_domain;         /* Socket domain. */
  342         int             kf_sock_type;           /* Socket type. */
  343         int             kf_sock_protocol;       /* Socket protocol. */
  344         struct sockaddr_storage kf_sa_local;    /* Socket address. */
  345         struct sockaddr_storage kf_sa_peer;     /* Peer address. */
  346         union {
  347                 struct {
  348                         /* Address of so_pcb. */
  349                         uint64_t        kf_sock_pcb;
  350                         /* Address of inp_ppcb. */
  351                         uint64_t        kf_sock_inpcb;
  352                         /* Address of unp_conn. */
  353                         uint64_t        kf_sock_unpconn;
  354                         /* Send buffer state. */
  355                         uint16_t        kf_sock_snd_sb_state;
  356                         /* Receive buffer state. */
  357                         uint16_t        kf_sock_rcv_sb_state;
  358                         /* Round to 64 bit alignment. */
  359                         uint32_t        kf_sock_pad0;
  360                 } kf_sock;
  361                 struct {
  362                         /* Global file id. */
  363                         uint64_t        kf_file_fileid;
  364                         /* File size. */
  365                         uint64_t        kf_file_size;
  366                         /* Vnode filesystem id. */
  367                         uint32_t        kf_file_fsid;
  368                         /* File device. */
  369                         uint32_t        kf_file_rdev;
  370                         /* File mode. */
  371                         uint16_t        kf_file_mode;
  372                         /* Round to 64 bit alignment. */
  373                         uint16_t        kf_file_pad0;
  374                         uint32_t        kf_file_pad1;
  375                 } kf_file;
  376                 struct {
  377                         uint32_t        kf_sem_value;
  378                         uint16_t        kf_sem_mode;
  379                 } kf_sem;
  380                 struct {
  381                         uint64_t        kf_pipe_addr;
  382                         uint64_t        kf_pipe_peer;
  383                         uint32_t        kf_pipe_buffer_cnt;
  384                         /* Round to 64 bit alignment. */
  385                         uint32_t        kf_pipe_pad0[3];
  386                 } kf_pipe;
  387                 struct {
  388                         uint32_t        kf_pts_dev;
  389                         /* Round to 64 bit alignment. */
  390                         uint32_t        kf_pts_pad0[7];
  391                 } kf_pts;
  392                 struct {
  393                         pid_t           kf_pid;
  394                 } kf_proc;
  395         } kf_un;
  396         uint16_t        kf_status;              /* Status flags. */
  397         uint16_t        kf_pad1;                /* Round to 32 bit alignment. */
  398         int             _kf_ispare0;            /* Space for more stuff. */
  399         cap_rights_t    kf_cap_rights;          /* Capability rights. */
  400         uint64_t        _kf_cap_spare;          /* Space for future cap_rights_t. */
  401         /* Truncated before copyout in sysctl */
  402         char            kf_path[PATH_MAX];      /* Path to file, if any. */
  403 };
  404 
  405 /*
  406  * The KERN_PROC_VMMAP sysctl allows a process to dump the VM layout of
  407  * another process as a series of entries.
  408  */
  409 #define KVME_TYPE_NONE          0
  410 #define KVME_TYPE_DEFAULT       1
  411 #define KVME_TYPE_VNODE         2
  412 #define KVME_TYPE_SWAP          3
  413 #define KVME_TYPE_DEVICE        4
  414 #define KVME_TYPE_PHYS          5
  415 #define KVME_TYPE_DEAD          6
  416 #define KVME_TYPE_SG            7
  417 #define KVME_TYPE_MGTDEVICE     8
  418 #define KVME_TYPE_UNKNOWN       255
  419 
  420 #define KVME_PROT_READ          0x00000001
  421 #define KVME_PROT_WRITE         0x00000002
  422 #define KVME_PROT_EXEC          0x00000004
  423 
  424 #define KVME_FLAG_COW           0x00000001
  425 #define KVME_FLAG_NEEDS_COPY    0x00000002
  426 #define KVME_FLAG_NOCOREDUMP    0x00000004
  427 #define KVME_FLAG_SUPER         0x00000008
  428 #define KVME_FLAG_GROWS_UP      0x00000010
  429 #define KVME_FLAG_GROWS_DOWN    0x00000020
  430 
  431 #if defined(__amd64__)
  432 #define KINFO_OVMENTRY_SIZE     1168
  433 #endif
  434 #if defined(__i386__)
  435 #define KINFO_OVMENTRY_SIZE     1128
  436 #endif
  437 
  438 struct kinfo_ovmentry {
  439         int      kve_structsize;                /* Size of kinfo_vmmapentry. */
  440         int      kve_type;                      /* Type of map entry. */
  441         void    *kve_start;                     /* Starting address. */
  442         void    *kve_end;                       /* Finishing address. */
  443         int      kve_flags;                     /* Flags on map entry. */
  444         int      kve_resident;                  /* Number of resident pages. */
  445         int      kve_private_resident;          /* Number of private pages. */
  446         int      kve_protection;                /* Protection bitmask. */
  447         int      kve_ref_count;                 /* VM obj ref count. */
  448         int      kve_shadow_count;              /* VM obj shadow count. */
  449         char     kve_path[PATH_MAX];            /* Path to VM obj, if any. */
  450         void    *_kve_pspare[8];                /* Space for more stuff. */
  451         off_t    kve_offset;                    /* Mapping offset in object */
  452         uint64_t kve_fileid;                    /* inode number if vnode */
  453         dev_t    kve_fsid;                      /* dev_t of vnode location */
  454         int      _kve_ispare[3];                /* Space for more stuff. */
  455 };
  456 
  457 #if defined(__amd64__) || defined(__i386__)
  458 #define KINFO_VMENTRY_SIZE      1160
  459 #endif
  460 
  461 struct kinfo_vmentry {
  462         int      kve_structsize;                /* Variable size of record. */
  463         int      kve_type;                      /* Type of map entry. */
  464         uint64_t kve_start;                     /* Starting address. */
  465         uint64_t kve_end;                       /* Finishing address. */
  466         uint64_t kve_offset;                    /* Mapping offset in object */
  467         uint64_t kve_vn_fileid;                 /* inode number if vnode */
  468         uint32_t kve_vn_fsid;                   /* dev_t of vnode location */
  469         int      kve_flags;                     /* Flags on map entry. */
  470         int      kve_resident;                  /* Number of resident pages. */
  471         int      kve_private_resident;          /* Number of private pages. */
  472         int      kve_protection;                /* Protection bitmask. */
  473         int      kve_ref_count;                 /* VM obj ref count. */
  474         int      kve_shadow_count;              /* VM obj shadow count. */
  475         int      kve_vn_type;                   /* Vnode type. */
  476         uint64_t kve_vn_size;                   /* File size. */
  477         uint32_t kve_vn_rdev;                   /* Device id if device. */
  478         uint16_t kve_vn_mode;                   /* File mode. */
  479         uint16_t kve_status;                    /* Status flags. */
  480         int      _kve_ispare[12];               /* Space for more stuff. */
  481         /* Truncated before copyout in sysctl */
  482         char     kve_path[PATH_MAX];            /* Path to VM obj, if any. */
  483 };
  484 
  485 /*
  486  * The KERN_PROC_KSTACK sysctl allows a process to dump the kernel stacks of
  487  * another process as a series of entries.  Each stack is represented by a
  488  * series of symbol names and offsets as generated by stack_sbuf_print(9).
  489  */
  490 #define KKST_MAXLEN     1024
  491 
  492 #define KKST_STATE_STACKOK      0               /* Stack is valid. */
  493 #define KKST_STATE_SWAPPED      1               /* Stack swapped out. */
  494 #define KKST_STATE_RUNNING      2               /* Stack ephemeral. */
  495 
  496 #if defined(__amd64__) || defined(__i386__)
  497 #define KINFO_KSTACK_SIZE       1096
  498 #endif
  499 
  500 struct kinfo_kstack {
  501         lwpid_t  kkst_tid;                      /* ID of thread. */
  502         int      kkst_state;                    /* Validity of stack. */
  503         char     kkst_trace[KKST_MAXLEN];       /* String representing stack. */
  504         int      _kkst_ispare[16];              /* Space for more stuff. */
  505 };
  506 
  507 struct kinfo_sigtramp {
  508         void    *ksigtramp_start;
  509         void    *ksigtramp_end;
  510         void    *ksigtramp_spare[4];
  511 };
  512 
  513 #ifdef _KERNEL
  514 /* Flags for kern_proc_out function. */
  515 #define KERN_PROC_NOTHREADS     0x1
  516 #define KERN_PROC_MASK32        0x2
  517 
  518 struct sbuf;
  519 
  520 /*
  521  * The kern_proc out functions are helper functions to dump process
  522  * miscellaneous kinfo structures to sbuf.  The main consumers are KERN_PROC
  523  * sysctls but they may also be used by other kernel subsystems.
  524  *
  525  * The functions manipulate the process locking state and expect the process
  526  * to be locked on enter.  On return the process is unlocked.
  527  */
  528 
  529 int     kern_proc_filedesc_out(struct proc *p, struct sbuf *sb, ssize_t maxlen);
  530 int     kern_proc_out(struct proc *p, struct sbuf *sb, int flags);
  531 int     kern_proc_vmmap_out(struct proc *p, struct sbuf *sb);
  532 
  533 int     vntype_to_kinfo(int vtype);
  534 #endif /* !_KERNEL */
  535 
  536 #endif

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