1471f287e1
limits beyond what should be capiable in a 32bit process, so we must fixup the limits. Reviewed by: jhb
140 lines
5.6 KiB
C
140 lines
5.6 KiB
C
/*-
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* Copyright (c) 1982, 1988, 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_SYSENT_H_
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#define _SYS_SYSENT_H_
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#include <bsm/audit.h>
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struct proc;
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struct thread;
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struct ksiginfo;
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typedef int sy_call_t(struct thread *, void *);
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struct sysent { /* system call table */
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int sy_narg; /* number of arguments */
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sy_call_t *sy_call; /* implementing function */
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au_event_t sy_auevent; /* audit event associated with syscall */
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};
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#define SYF_ARGMASK 0x0000FFFF
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#define SYF_MPSAFE 0x00010000
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struct image_params;
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struct __sigset;
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struct trapframe;
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struct vnode;
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struct sysentvec {
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int sv_size; /* number of entries */
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struct sysent *sv_table; /* pointer to sysent */
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u_int sv_mask; /* optional mask to index */
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int sv_sigsize; /* size of signal translation table */
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int *sv_sigtbl; /* signal translation table */
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int sv_errsize; /* size of errno translation table */
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int *sv_errtbl; /* errno translation table */
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int (*sv_transtrap)(int, int);
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/* translate trap-to-signal mapping */
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int (*sv_fixup)(register_t **, struct image_params *);
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/* stack fixup function */
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void (*sv_sendsig)(void (*)(int), struct ksiginfo *, struct __sigset *);
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/* send signal */
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char *sv_sigcode; /* start of sigtramp code */
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int *sv_szsigcode; /* size of sigtramp code */
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void (*sv_prepsyscall)(struct trapframe *, int *, u_int *,
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caddr_t *);
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char *sv_name; /* name of binary type */
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int (*sv_coredump)(struct thread *, struct vnode *, off_t);
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/* function to dump core, or NULL */
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int (*sv_imgact_try)(struct image_params *);
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int sv_minsigstksz; /* minimum signal stack size */
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int sv_pagesize; /* pagesize */
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vm_offset_t sv_minuser; /* VM_MIN_ADDRESS */
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vm_offset_t sv_maxuser; /* VM_MAXUSER_ADDRESS */
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vm_offset_t sv_usrstack; /* USRSTACK */
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vm_offset_t sv_psstrings; /* PS_STRINGS */
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int sv_stackprot; /* vm protection for stack */
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register_t *(*sv_copyout_strings)(struct image_params *);
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void (*sv_setregs)(struct thread *, u_long, u_long, u_long);
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void (*sv_fixlimits)(struct proc *);
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};
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#ifdef _KERNEL
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extern struct sysentvec aout_sysvec;
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extern struct sysentvec elf_freebsd_sysvec;
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extern struct sysentvec null_sysvec;
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extern struct sysent sysent[];
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#define NO_SYSCALL (-1)
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struct module;
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struct syscall_module_data {
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int (*chainevh)(struct module *, int, void *); /* next handler */
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void *chainarg; /* arg for next event handler */
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int *offset; /* offset into sysent */
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struct sysent *new_sysent; /* new sysent */
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struct sysent old_sysent; /* old sysent */
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};
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#define SYSCALL_MODULE(name, offset, new_sysent, evh, arg) \
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static struct syscall_module_data name##_syscall_mod = { \
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evh, arg, offset, new_sysent, { 0, NULL } \
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}; \
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\
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static moduledata_t name##_mod = { \
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#name, \
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syscall_module_handler, \
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&name##_syscall_mod \
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}; \
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DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
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#define SYSCALL_MODULE_HELPER(syscallname) \
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static int syscallname##_syscall = SYS_##syscallname; \
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static struct sysent syscallname##_sysent = { \
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(sizeof(struct syscallname ## _args ) \
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/ sizeof(register_t)), \
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(sy_call_t *)& syscallname \
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}; \
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SYSCALL_MODULE(syscallname, \
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& syscallname##_syscall, & syscallname##_sysent, \
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NULL, NULL);
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int syscall_register(int *offset, struct sysent *new_sysent,
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struct sysent *old_sysent);
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int syscall_deregister(int *offset, struct sysent *old_sysent);
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int syscall_module_handler(struct module *mod, int what, void *arg);
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#endif /* _KERNEL */
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#endif /* !_SYS_SYSENT_H_ */
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