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

     /*-
      * Copyright (c) 1982, 1986, 1989, 1991, 1993
      *      The Regents of the University of California.
      * Copyright (c) 2007 Robert N. M. Watson
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)user.h      8.2 (Berkeley) 9/23/93
     * $FreeBSD: releng/10.0/sys/sys/user.h 260406 2014-01-07 20:12:02Z pjd $
     */
    
    #ifndef _SYS_USER_H_
    #define _SYS_USER_H_
    
    #include <machine/pcb.h>
    #ifndef _KERNEL
    /* stuff that *used* to be included by user.h, or is now needed */
    #include <sys/errno.h>
    #include <sys/time.h>
    #include <sys/resource.h>
    #include <sys/ucred.h>
    #include <sys/uio.h>
    #include <sys/queue.h>
    #include <sys/_lock.h>
    #include <sys/_mutex.h>
    #include <sys/proc.h>
    #include <vm/vm.h>              /* XXX */
    #include <vm/vm_param.h>        /* XXX */
    #include <vm/pmap.h>            /* XXX */
    #include <vm/vm_map.h>          /* XXX */
    #endif /* !_KERNEL */
    #ifndef _SYS_RESOURCEVAR_H_
    #include <sys/resourcevar.h>
    #endif
    #ifndef _SYS_SIGNALVAR_H_
    #include <sys/signalvar.h>
    #endif
    #ifndef _SYS_SOCKET_VAR_H_
    #include <sys/socket.h>
    #endif
    #include <sys/caprights.h>
    
    /*
     * KERN_PROC subtype ops return arrays of selected proc structure entries:
     *
     * This struct includes several arrays of spare space, with different arrays
     * for different standard C-types.  When adding new variables to this struct,
     * the space for byte-aligned data should be taken from the ki_sparestring,
     * pointers from ki_spareptrs, word-aligned data from ki_spareints, and
     * doubleword-aligned data from ki_sparelongs.  Make sure the space for new
     * variables come from the array which matches the size and alignment of
     * those variables on ALL hardware platforms, and then adjust the appropriate
     * KI_NSPARE_* value(s) to match.
     *
     * Always verify that sizeof(struct kinfo_proc) == KINFO_PROC_SIZE on all
     * platforms after you have added new variables.  Note that if you change
     * the value of KINFO_PROC_SIZE, then many userland programs will stop
     * working until they are recompiled!
     *
     * Once you have added the new field, you will need to add code to initialize
     * it in two places: function fill_kinfo_proc in sys/kern/kern_proc.c and
     * function kvm_proclist in lib/libkvm/kvm_proc.c .
     */
    #define KI_NSPARE_INT   7
    #define KI_NSPARE_LONG  12
    #define KI_NSPARE_PTR   6
    
    #ifndef _KERNEL
    #ifndef KINFO_PROC_SIZE
    #error "Unknown architecture"
    #endif
    #endif /* !_KERNEL */
    
    #define WMESGLEN        8               /* size of returned wchan message */
    #define LOCKNAMELEN     8               /* size of returned lock name */
    #define TDNAMLEN        16              /* size of returned thread name */
   #define COMMLEN         19              /* size of returned ki_comm name */
   #define KI_EMULNAMELEN  16              /* size of returned ki_emul */
   #define KI_NGROUPS      16              /* number of groups in ki_groups */
   #define LOGNAMELEN      17              /* size of returned ki_login */
   #define LOGINCLASSLEN   17              /* size of returned ki_loginclass */
   
   #ifndef BURN_BRIDGES
   #define OCOMMLEN        TDNAMLEN        
   #define ki_ocomm        ki_tdname
   #endif
   
   /* Flags for the process credential. */
   #define KI_CRF_CAPABILITY_MODE  0x00000001
   /*
    * Steal a bit from ki_cr_flags to indicate that the cred had more than
    * KI_NGROUPS groups.
    */
   #define KI_CRF_GRP_OVERFLOW     0x80000000
   
   struct kinfo_proc {
           int     ki_structsize;          /* size of this structure */
           int     ki_layout;              /* reserved: layout identifier */
           struct  pargs *ki_args;         /* address of command arguments */
           struct  proc *ki_paddr;         /* address of proc */
           struct  user *ki_addr;          /* kernel virtual addr of u-area */
           struct  vnode *ki_tracep;       /* pointer to trace file */
           struct  vnode *ki_textvp;       /* pointer to executable file */
           struct  filedesc *ki_fd;        /* pointer to open file info */
           struct  vmspace *ki_vmspace;    /* pointer to kernel vmspace struct */
           void    *ki_wchan;              /* sleep address */
           pid_t   ki_pid;                 /* Process identifier */
           pid_t   ki_ppid;                /* parent process id */
           pid_t   ki_pgid;                /* process group id */
           pid_t   ki_tpgid;               /* tty process group id */
           pid_t   ki_sid;                 /* Process session ID */
           pid_t   ki_tsid;                /* Terminal session ID */
           short   ki_jobc;                /* job control counter */
           short   ki_spare_short1;        /* unused (just here for alignment) */
           dev_t   ki_tdev;                /* controlling tty dev */
           sigset_t ki_siglist;            /* Signals arrived but not delivered */
           sigset_t ki_sigmask;            /* Current signal mask */
           sigset_t ki_sigignore;          /* Signals being ignored */
           sigset_t ki_sigcatch;           /* Signals being caught by user */
           uid_t   ki_uid;                 /* effective user id */
           uid_t   ki_ruid;                /* Real user id */
           uid_t   ki_svuid;               /* Saved effective user id */
           gid_t   ki_rgid;                /* Real group id */
           gid_t   ki_svgid;               /* Saved effective group id */
           short   ki_ngroups;             /* number of groups */
           short   ki_spare_short2;        /* unused (just here for alignment) */
           gid_t   ki_groups[KI_NGROUPS];  /* groups */
           vm_size_t ki_size;              /* virtual size */
           segsz_t ki_rssize;              /* current resident set size in pages */
           segsz_t ki_swrss;               /* resident set size before last swap */
           segsz_t ki_tsize;               /* text size (pages) XXX */
           segsz_t ki_dsize;               /* data size (pages) XXX */
           segsz_t ki_ssize;               /* stack size (pages) */
           u_short ki_xstat;               /* Exit status for wait & stop signal */
           u_short ki_acflag;              /* Accounting flags */
           fixpt_t ki_pctcpu;              /* %cpu for process during ki_swtime */
           u_int   ki_estcpu;              /* Time averaged value of ki_cpticks */
           u_int   ki_slptime;             /* Time since last blocked */
           u_int   ki_swtime;              /* Time swapped in or out */
           u_int   ki_cow;                 /* number of copy-on-write faults */
           u_int64_t ki_runtime;           /* Real time in microsec */
           struct  timeval ki_start;       /* starting time */
           struct  timeval ki_childtime;   /* time used by process children */
           long    ki_flag;                /* P_* flags */
           long    ki_kiflag;              /* KI_* flags (below) */
           int     ki_traceflag;           /* Kernel trace points */
           char    ki_stat;                /* S* process status */
           signed char ki_nice;            /* Process "nice" value */
           char    ki_lock;                /* Process lock (prevent swap) count */
           char    ki_rqindex;             /* Run queue index */
           u_char  ki_oncpu;               /* Which cpu we are on */
           u_char  ki_lastcpu;             /* Last cpu we were on */
           char    ki_tdname[TDNAMLEN+1];  /* thread name */
           char    ki_wmesg[WMESGLEN+1];   /* wchan message */
           char    ki_login[LOGNAMELEN+1]; /* setlogin name */
           char    ki_lockname[LOCKNAMELEN+1]; /* lock name */
           char    ki_comm[COMMLEN+1];     /* command name */
           char    ki_emul[KI_EMULNAMELEN+1];  /* emulation name */
           char    ki_loginclass[LOGINCLASSLEN+1]; /* login class */
           /*
            * When adding new variables, take space for char-strings from the
            * front of ki_sparestrings, and ints from the end of ki_spareints.
            * That way the spare room from both arrays will remain contiguous.
            */
           char    ki_sparestrings[50];    /* spare string space */
           int     ki_spareints[KI_NSPARE_INT];    /* spare room for growth */
           int     ki_flag2;               /* P2_* flags */
           int     ki_fibnum;              /* Default FIB number */
           u_int   ki_cr_flags;            /* Credential flags */
           int     ki_jid;                 /* Process jail ID */
           int     ki_numthreads;          /* XXXKSE number of threads in total */
           lwpid_t ki_tid;                 /* XXXKSE thread id */
           struct  priority ki_pri;        /* process priority */
           struct  rusage ki_rusage;       /* process rusage statistics */
           /* XXX - most fields in ki_rusage_ch are not (yet) filled in */
           struct  rusage ki_rusage_ch;    /* rusage of children processes */
           struct  pcb *ki_pcb;            /* kernel virtual addr of pcb */
           void    *ki_kstack;             /* kernel virtual addr of stack */
           void    *ki_udata;              /* User convenience pointer */
           struct  thread *ki_tdaddr;      /* address of thread */
           /*
            * When adding new variables, take space for pointers from the
            * front of ki_spareptrs, and longs from the end of ki_sparelongs.
            * That way the spare room from both arrays will remain contiguous.
            */
           void    *ki_spareptrs[KI_NSPARE_PTR];   /* spare room for growth */
           long    ki_sparelongs[KI_NSPARE_LONG];  /* spare room for growth */
           long    ki_sflag;               /* PS_* flags */
           long    ki_tdflags;             /* XXXKSE kthread flag */
   };
   void fill_kinfo_proc(struct proc *, struct kinfo_proc *);
   /* XXX - the following two defines are temporary */
   #define ki_childstime   ki_rusage_ch.ru_stime
   #define ki_childutime   ki_rusage_ch.ru_utime
   
   /*
    *  Legacy PS_ flag.  This moved to p_flag but is maintained for
    *  compatibility.
    */
   #define PS_INMEM        0x00001         /* Loaded into memory. */
   
   /* ki_sessflag values */
   #define KI_CTTY         0x00000001      /* controlling tty vnode active */
   #define KI_SLEADER      0x00000002      /* session leader */
   #define KI_LOCKBLOCK    0x00000004      /* proc blocked on lock ki_lockname */
   
   /*
    * This used to be the per-process structure containing data that
    * isn't needed in core when the process is swapped out, but now it
    * remains only for the benefit of a.out core dumps.
    */
   struct user {
           struct  pstats u_stats;         /* *p_stats */
           struct  kinfo_proc u_kproc;     /* eproc */
   };
   
   /*
    * The KERN_PROC_FILE sysctl allows a process to dump the file descriptor
    * array of another process.
    */
   #define KF_ATTR_VALID   0x0001
   
   #define KF_TYPE_NONE    0
   #define KF_TYPE_VNODE   1
   #define KF_TYPE_SOCKET  2
   #define KF_TYPE_PIPE    3
   #define KF_TYPE_FIFO    4
   #define KF_TYPE_KQUEUE  5
   #define KF_TYPE_CRYPTO  6
   #define KF_TYPE_MQUEUE  7
   #define KF_TYPE_SHM     8
   #define KF_TYPE_SEM     9
   #define KF_TYPE_PTS     10
   #define KF_TYPE_PROCDESC        11
   #define KF_TYPE_UNKNOWN 255
   
   #define KF_VTYPE_VNON   0
   #define KF_VTYPE_VREG   1
   #define KF_VTYPE_VDIR   2
   #define KF_VTYPE_VBLK   3
   #define KF_VTYPE_VCHR   4
   #define KF_VTYPE_VLNK   5
   #define KF_VTYPE_VSOCK  6
   #define KF_VTYPE_VFIFO  7
   #define KF_VTYPE_VBAD   8
   #define KF_VTYPE_UNKNOWN        255
   
   #define KF_FD_TYPE_CWD  -1      /* Current working directory */
   #define KF_FD_TYPE_ROOT -2      /* Root directory */
   #define KF_FD_TYPE_JAIL -3      /* Jail directory */
   #define KF_FD_TYPE_TRACE        -4      /* ptrace vnode */
   #define KF_FD_TYPE_TEXT -5      /* Text vnode */
   #define KF_FD_TYPE_CTTY -6      /* Controlling terminal */
   
   #define KF_FLAG_READ            0x00000001
   #define KF_FLAG_WRITE           0x00000002
   #define KF_FLAG_APPEND          0x00000004
   #define KF_FLAG_ASYNC           0x00000008
   #define KF_FLAG_FSYNC           0x00000010
   #define KF_FLAG_NONBLOCK        0x00000020
   #define KF_FLAG_DIRECT          0x00000040
   #define KF_FLAG_HASLOCK         0x00000080
   #define KF_FLAG_SHLOCK          0x00000100
   #define KF_FLAG_EXLOCK          0x00000200
   #define KF_FLAG_NOFOLLOW        0x00000400
   #define KF_FLAG_CREAT           0x00000800
   #define KF_FLAG_TRUNC           0x00001000
   #define KF_FLAG_EXCL            0x00002000
   #define KF_FLAG_EXEC            0x00004000
   
   /*
    * Old format.  Has variable hidden padding due to alignment.
    * This is a compatability hack for pre-build 7.1 packages.
    */
   #if defined(__amd64__)
   #define KINFO_OFILE_SIZE        1328
   #endif
   #if defined(__i386__)
   #define KINFO_OFILE_SIZE        1324
   #endif
   
   struct kinfo_ofile {
           int     kf_structsize;                  /* Size of kinfo_file. */
           int     kf_type;                        /* Descriptor type. */
           int     kf_fd;                          /* Array index. */
           int     kf_ref_count;                   /* Reference count. */
           int     kf_flags;                       /* Flags. */
           /* XXX Hidden alignment padding here on amd64 */
           off_t   kf_offset;                      /* Seek location. */
           int     kf_vnode_type;                  /* Vnode type. */
           int     kf_sock_domain;                 /* Socket domain. */
           int     kf_sock_type;                   /* Socket type. */
           int     kf_sock_protocol;               /* Socket protocol. */
           char    kf_path[PATH_MAX];      /* Path to file, if any. */
           struct sockaddr_storage kf_sa_local;    /* Socket address. */
           struct sockaddr_storage kf_sa_peer;     /* Peer address. */
   };
   
   #if defined(__amd64__) || defined(__i386__)
   /*
    * This size should never be changed. If you really need to, you must provide
    * backward ABI compatibility by allocating a new sysctl MIB that will return
    * the new structure. The current structure has to be returned by the current
    * sysctl MIB. See how it is done for the kinfo_ofile structure.
    */
   #define KINFO_FILE_SIZE 1392
   #endif
   
   struct kinfo_file {
           int             kf_structsize;          /* Variable size of record. */
           int             kf_type;                /* Descriptor type. */
           int             kf_fd;                  /* Array index. */
           int             kf_ref_count;           /* Reference count. */
           int             kf_flags;               /* Flags. */
           int             kf_pad0;                /* Round to 64 bit alignment. */
           int64_t         kf_offset;              /* Seek location. */
           int             kf_vnode_type;          /* Vnode type. */
           int             kf_sock_domain;         /* Socket domain. */
           int             kf_sock_type;           /* Socket type. */
           int             kf_sock_protocol;       /* Socket protocol. */
           struct sockaddr_storage kf_sa_local;    /* Socket address. */
           struct sockaddr_storage kf_sa_peer;     /* Peer address. */
           union {
                   struct {
                           /* Address of so_pcb. */
                           uint64_t        kf_sock_pcb;
                           /* Address of inp_ppcb. */
                           uint64_t        kf_sock_inpcb;
                           /* Address of unp_conn. */
                           uint64_t        kf_sock_unpconn;
                           /* Send buffer state. */
                           uint16_t        kf_sock_snd_sb_state;
                           /* Receive buffer state. */
                           uint16_t        kf_sock_rcv_sb_state;
                           /* Round to 64 bit alignment. */
                           uint32_t        kf_sock_pad0;
                   } kf_sock;
                   struct {
                           /* Global file id. */
                           uint64_t        kf_file_fileid;
                           /* File size. */
                           uint64_t        kf_file_size;
                           /* Vnode filesystem id. */
                           uint32_t        kf_file_fsid;
                           /* File device. */
                           uint32_t        kf_file_rdev;
                           /* File mode. */
                           uint16_t        kf_file_mode;
                           /* Round to 64 bit alignment. */
                           uint16_t        kf_file_pad0;
                           uint32_t        kf_file_pad1;
                   } kf_file;
                   struct {
                           uint32_t        kf_sem_value;
                           uint16_t        kf_sem_mode;
                   } kf_sem;
                   struct {
                           uint64_t        kf_pipe_addr;
                           uint64_t        kf_pipe_peer;
                           uint32_t        kf_pipe_buffer_cnt;
                           /* Round to 64 bit alignment. */
                           uint32_t        kf_pipe_pad0[3];
                   } kf_pipe;
                   struct {
                           uint32_t        kf_pts_dev;
                           /* Round to 64 bit alignment. */
                           uint32_t        kf_pts_pad0[7];
                   } kf_pts;
                   struct {
                           pid_t           kf_pid;
                   } kf_proc;
           } kf_un;
           uint16_t        kf_status;              /* Status flags. */
           uint16_t        kf_pad1;                /* Round to 32 bit alignment. */
           int             _kf_ispare0;            /* Space for more stuff. */
           cap_rights_t    kf_cap_rights;          /* Capability rights. */
           uint64_t        _kf_cap_spare;          /* Space for future cap_rights_t. */
           /* Truncated before copyout in sysctl */
           char            kf_path[PATH_MAX];      /* Path to file, if any. */
   };
   
   /*
    * The KERN_PROC_VMMAP sysctl allows a process to dump the VM layout of
    * another process as a series of entries.
    */
   #define KVME_TYPE_NONE          0
   #define KVME_TYPE_DEFAULT       1
   #define KVME_TYPE_VNODE         2
   #define KVME_TYPE_SWAP          3
   #define KVME_TYPE_DEVICE        4
   #define KVME_TYPE_PHYS          5
   #define KVME_TYPE_DEAD          6
   #define KVME_TYPE_SG            7
   #define KVME_TYPE_UNKNOWN       255
   
   #define KVME_PROT_READ          0x00000001
   #define KVME_PROT_WRITE         0x00000002
   #define KVME_PROT_EXEC          0x00000004
   
   #define KVME_FLAG_COW           0x00000001
   #define KVME_FLAG_NEEDS_COPY    0x00000002
   #define KVME_FLAG_NOCOREDUMP    0x00000004
   #define KVME_FLAG_SUPER         0x00000008
   #define KVME_FLAG_GROWS_UP      0x00000010
   #define KVME_FLAG_GROWS_DOWN    0x00000020
   
   #if defined(__amd64__)
   #define KINFO_OVMENTRY_SIZE     1168
   #endif
   #if defined(__i386__)
   #define KINFO_OVMENTRY_SIZE     1128
   #endif
   
   struct kinfo_ovmentry {
           int      kve_structsize;                /* Size of kinfo_vmmapentry. */
           int      kve_type;                      /* Type of map entry. */
           void    *kve_start;                     /* Starting address. */
           void    *kve_end;                       /* Finishing address. */
           int      kve_flags;                     /* Flags on map entry. */
           int      kve_resident;                  /* Number of resident pages. */
           int      kve_private_resident;          /* Number of private pages. */
           int      kve_protection;                /* Protection bitmask. */
           int      kve_ref_count;                 /* VM obj ref count. */
           int      kve_shadow_count;              /* VM obj shadow count. */
           char     kve_path[PATH_MAX];            /* Path to VM obj, if any. */
           void    *_kve_pspare[8];                /* Space for more stuff. */
           off_t    kve_offset;                    /* Mapping offset in object */
           uint64_t kve_fileid;                    /* inode number if vnode */
           dev_t    kve_fsid;                      /* dev_t of vnode location */
           int      _kve_ispare[3];                /* Space for more stuff. */
   };
   
   #if defined(__amd64__) || defined(__i386__)
   #define KINFO_VMENTRY_SIZE      1160
   #endif
   
   struct kinfo_vmentry {
           int      kve_structsize;                /* Variable size of record. */
           int      kve_type;                      /* Type of map entry. */
           uint64_t kve_start;                     /* Starting address. */
           uint64_t kve_end;                       /* Finishing address. */
           uint64_t kve_offset;                    /* Mapping offset in object */
           uint64_t kve_vn_fileid;                 /* inode number if vnode */
           uint32_t kve_vn_fsid;                   /* dev_t of vnode location */
           int      kve_flags;                     /* Flags on map entry. */
           int      kve_resident;                  /* Number of resident pages. */
           int      kve_private_resident;          /* Number of private pages. */
           int      kve_protection;                /* Protection bitmask. */
           int      kve_ref_count;                 /* VM obj ref count. */
           int      kve_shadow_count;              /* VM obj shadow count. */
           int      kve_vn_type;                   /* Vnode type. */
           uint64_t kve_vn_size;                   /* File size. */
           uint32_t kve_vn_rdev;                   /* Device id if device. */
           uint16_t kve_vn_mode;                   /* File mode. */
           uint16_t kve_status;                    /* Status flags. */
           int      _kve_ispare[12];               /* Space for more stuff. */
           /* Truncated before copyout in sysctl */
           char     kve_path[PATH_MAX];            /* Path to VM obj, if any. */
   };
   
   /*
    * The KERN_PROC_KSTACK sysctl allows a process to dump the kernel stacks of
    * another process as a series of entries.  Each stack is represented by a
    * series of symbol names and offsets as generated by stack_sbuf_print(9).
    */
   #define KKST_MAXLEN     1024
   
   #define KKST_STATE_STACKOK      0               /* Stack is valid. */
   #define KKST_STATE_SWAPPED      1               /* Stack swapped out. */
   #define KKST_STATE_RUNNING      2               /* Stack ephemeral. */
   
   #if defined(__amd64__) || defined(__i386__)
   #define KINFO_KSTACK_SIZE       1096
   #endif
   
   struct kinfo_kstack {
           lwpid_t  kkst_tid;                      /* ID of thread. */
           int      kkst_state;                    /* Validity of stack. */
           char     kkst_trace[KKST_MAXLEN];       /* String representing stack. */
           int      _kkst_ispare[16];              /* Space for more stuff. */
   };
   
   struct kinfo_sigtramp {
           void    *ksigtramp_start;
           void    *ksigtramp_end;
           void    *ksigtramp_spare[4];
   };
   
   #ifdef _KERNEL
   /* Flags for kern_proc_out function. */
   #define KERN_PROC_NOTHREADS     0x1
   #define KERN_PROC_MASK32        0x2
   
   struct sbuf;
   
   /*
    * The kern_proc out functions are helper functions to dump process
    * miscellaneous kinfo structures to sbuf.  The main consumers are KERN_PROC
    * sysctls but they may also be used by other kernel subsystems.
    *
    * The functions manipulate the process locking state and expect the process
    * to be locked on enter.  On return the process is unlocked.
    */
   
   int     kern_proc_filedesc_out(struct proc *p, struct sbuf *sb, ssize_t maxlen);
   int     kern_proc_out(struct proc *p, struct sbuf *sb, int flags);
   int     kern_proc_vmmap_out(struct proc *p, struct sbuf *sb);
   
   int     vntype_to_kinfo(int vtype);
   #endif /* !_KERNEL */
   
   #endif

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