sysent.h

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * Copyright (c) 1982, 1988, 1991 The Regents of the University of California.
    3  * 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  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by the University of
   16  *      California, Berkeley and its contributors.
   17  * 4. Neither the name of the University nor the names of its contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  *
   33  * $FreeBSD: src/sys/sys/sysent.h,v 1.27.2.5 2002/03/17 11:08:38 alfred Exp $
   34  * $DragonFly: src/sys/sys/sysent.h,v 1.12 2007/02/21 15:45:37 corecode Exp $
   35  */
   36 
   37 #ifndef _SYS_SYSENT_H_
   38 #define _SYS_SYSENT_H_
   39 
   40 #ifndef _SYS_TYPES_H_
   41 #include <sys/types.h>
   42 #endif
   43 
   44 struct lwp;
   45 
   46 typedef int     sy_call_t (void *);
   47 
   48 struct sysent {         /* system call table */
   49         int     sy_narg;        /* number of arguments */
   50         sy_call_t *sy_call;     /* start function */
   51         sy_call_t *sy_abort;    /* abort function (only if start was async) */
   52 };
   53 
   54 #define SYF_ARGMASK     0x0000FFFF
   55 
   56 #define SCARG(p,k)      ((p)->k)        /* get arg from args pointer */
   57   /* placeholder till we integrate rest of lite2 syscallargs changes XXX */
   58 
   59 struct image_params;
   60 struct __sigset;
   61 struct trapframe;
   62 struct vnode;
   63 
   64 struct sysentvec {
   65         int             sv_size;        /* number of entries */
   66         struct sysent   *sv_table;      /* pointer to sysent */
   67         u_int           sv_mask;        /* optional mask to index, else -1 */
   68         int             sv_sigsize;     /* size of signal translation table */
   69         int             *sv_sigtbl;     /* signal translation table */
   70         int             sv_errsize;     /* size of errno translation table */
   71         int             *sv_errtbl;     /* errno translation table */
   72         int             (*sv_transtrap) (int, int);
   73                                         /* translate trap-to-signal mapping */
   74         int             (*sv_fixup) (register_t **, struct image_params *);
   75                                         /* stack fixup function */
   76         void            (*sv_sendsig) (void (*)(int), int,
   77                                            struct __sigset *, u_long);
   78                                         /* send signal */
   79         char            *sv_sigcode;    /* start of sigtramp code */
   80         int             *sv_szsigcode;  /* size of sigtramp code */
   81                                         /* prep syscall (must be MPSAFE) */
   82         void            (*sv_prepsyscall) (struct trapframe *, int *,
   83                                                u_int *, caddr_t *);
   84         char            *sv_name;       /* name of binary type */
   85         int             (*sv_coredump) (struct lwp *, int, struct vnode *,
   86                                             off_t);
   87                                         /* function to dump core, or NULL */
   88         int             (*sv_imgact_try) (struct image_params *);
   89         int             sv_minsigstksz; /* minimum signal stack size */
   90 };
   91 
   92 #ifdef _KERNEL
   93 extern struct sysentvec aout_sysvec;
   94 extern struct sysent sysent[];
   95 
   96 #define NO_SYSCALL (-1)
   97 
   98 struct module;
   99 
  100 struct syscall_module_data {
  101        int     (*chainevh)(struct module *, int, void *); /* next handler */
  102        void    *chainarg;      /* arg for next event handler */
  103        int     *offset;         /* offset into sysent */
  104        struct  sysent *new_sysent; /* new sysent */
  105        struct  sysent old_sysent; /* old sysent */
  106 };
  107 
  108 #define SYSCALL_MODULE(name, offset, new_sysent, evh, arg)     \
  109 static struct syscall_module_data name##_syscall_mod = {       \
  110        evh, arg, offset, new_sysent, { 0, NULL }               \
  111 };                                                             \
  112                                                                \
  113 static moduledata_t name##_mod = {                             \
  114        #name,                                                  \
  115        syscall_module_handler,                                 \
  116        &name##_syscall_mod                                     \
  117 };                                                             \
  118 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
  119 
  120 #define SYSCALL_MODULE_HELPER(syscallname)              \
  121 static int syscallname##_syscall = SYS_##syscallname;   \
  122 static struct sysent syscallname##_sysent = {           \
  123     ((sizeof(struct syscallname ## _args ) - sizeof(struct sysmsg)) \
  124         / sizeof(register_t)),    \
  125     (sy_call_t *)& syscallname                          \
  126 };                                                      \
  127 SYSCALL_MODULE(syscallname,                             \
  128     & syscallname##_syscall, & syscallname##_sysent,    \
  129     NULL, NULL);
  130 
  131 int    syscall_register (int *offset, struct sysent *new_sysent,
  132                              struct sysent *old_sysent);
  133 int    syscall_deregister (int *offset, struct sysent *old_sysent);
  134 int    syscall_module_handler (struct module *mod, int what, void *arg);
  135 
  136 #endif /* _KERNEL */
  137 
  138 #endif /* !_SYS_SYSENT_H_ */

Cache object: 7fe8f069bbccc760f854c7f75278429c

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

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

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