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/*-
* Copyright (c) 1982, 1988, 1991 The Regents of the University of California.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 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.
*
* $Id: sysent.h,v 1.19 1998/09/14 05:36:51 jdp Exp $
*/
#ifndef _SYS_SYSENT_H_
#define _SYS_SYSENT_H_
struct proc;
typedef int sy_call_t __P((struct proc *, void *));
struct sysent { /* system call table */
int sy_narg; /* number of arguments */
sy_call_t *sy_call; /* implementing function */
};
#define SCARG(p,k) ((p)->k) /* get arg from args pointer */
/* placeholder till we integrate rest of lite2 syscallargs changes XXX */
struct image_params;
struct trapframe;
struct sysentvec {
int sv_size; /* number of entries */
struct sysent *sv_table; /* pointer to sysent */
u_int sv_mask; /* optional mask to index */
int sv_sigsize; /* size of signal translation table */
int *sv_sigtbl; /* signal translation table */
int sv_errsize; /* size of errno translation table */
int *sv_errtbl; /* errno translation table */
int (*sv_transtrap) __P((int, int));
/* translate trap-to-signal mapping */
int (*sv_fixup) __P((long **, struct image_params *));
/* stack fixup function */
void (*sv_sendsig) __P((void (*)(int), int, int, u_long));
/* send signal */
char *sv_sigcode; /* start of sigtramp code */
int *sv_szsigcode; /* size of sigtramp code */
void (*sv_prepsyscall) __P((struct trapframe *, int *,
u_int *, caddr_t *));
char *sv_name; /* name of binary type */
int (*sv_coredump) __P((struct proc *p));
/* function to dump core, or NULL */
};
#ifdef KERNEL
extern struct sysentvec aout_sysvec;
extern struct sysent sysent[];
#define NO_SYSCALL (-1)
struct module;
struct syscall_module_data {
int (*chainevh)(struct module *, int, void *); /* next handler */
void *chainarg; /* arg for next event handler */
int *offset; /* offset into sysent */
struct sysent *new_sysent; /* new sysent */
struct sysent old_sysent; /* old sysent */
};
#define SYSCALL_MODULE(name, offset, new_sysent, evh, arg) \
static struct syscall_module_data name##_syscall_mod = { \
evh, arg, offset, new_sysent \
}; \
\
static moduledata_t name##_mod = { \
#name, \
syscall_module_handler, \
&name##_syscall_mod \
}; \
DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
int syscall_register __P((int *offset, struct sysent *new_sysent,
struct sysent *old_sysent));
int syscall_deregister __P((int *offset, struct sysent *old_sysent));
int syscall_module_handler __P((struct module *mod, int what, void *arg));
#endif /* KERNEL */
#endif /* !_SYS_SYSENT_H_ */
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