diff options
Diffstat (limited to 'sys/contrib/lomac/syscall_gate.c')
-rw-r--r-- | sys/contrib/lomac/syscall_gate.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/sys/contrib/lomac/syscall_gate.c b/sys/contrib/lomac/syscall_gate.c deleted file mode 100644 index 7015e3c..0000000 --- a/sys/contrib/lomac/syscall_gate.c +++ /dev/null @@ -1,116 +0,0 @@ -/*- - * Copyright (c) 2001 Networks Associates Technology, Inc. - * 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. - * - * $FreeBSD$ - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/conf.h> -#include <sys/kernel.h> -#include <sys/module.h> -#include <sys/lock.h> -#include <sys/mutex.h> -#include <sys/proc.h> -#include <sys/syscall.h> -#include <sys/sysent.h> - -#include <machine/frame.h> - -#include "syscall_gate.h" -void syscall_gate_init(void); -int syscall_gate(struct thread *td, caddr_t params); - -static struct syscall_gate sg; - -void -syscall_gate_init(void) { - - sg.sg_table = curthread->td_proc->p_sysent->sv_table; - bzero(sg.sg_oldsyscalls, sizeof(sg.sg_oldsyscalls)); -} - -int -syscall_gate_register(int offset, sy_call_t *call, int narg, int mpsafe) { - struct sysent *se; - int error = 0; - - if (offset <= 0 || offset >= SYS_MAXSYSCALL) { - error = EINVAL; - goto out; - } - if (sg.sg_oldsyscalls[offset].sy_call != NULL) { - error = EEXIST; - goto out; - } - se = &sg.sg_table[offset]; - sg.sg_oldsyscalls[offset] = *se; - se->sy_call = (sy_call_t *)call; - se->sy_narg = narg | (mpsafe ? SYF_MPSAFE : 0); -out: - return (error); -} - -void -syscall_gate_deregister(int offset) { - KASSERT(offset > 0 && offset < SYS_MAXSYSCALL, ("syscall offset %d out of range", - offset)); - KASSERT(sg.sg_oldsyscalls[offset].sy_call != NULL, ("deregistering nonexistant syscall %d", - offset)); - sg.sg_table[offset] = sg.sg_oldsyscalls[offset]; - sg.sg_oldsyscalls[offset].sy_call = NULL; - sg.sg_oldsyscalls[offset].sy_narg = 0; -} - -static int -syscall_gate_modevent(module_t module, int event, void *unused) { - int i; - - switch ((enum modeventtype)event) { - case MOD_LOAD: - syscall_gate_init(); - break; - case MOD_UNLOAD: - for (i = 1; i < SYS_MAXSYSCALL; i++) { - struct sysent *se; - - se = &sg.sg_oldsyscalls[i]; - if (se->sy_call != NULL) - sg.sg_table[i] = *se; - } - break; - case MOD_SHUTDOWN: - break; - } - return (0); -} - -static moduledata_t syscall_gate_moduledata = { - "syscall_gate", - &syscall_gate_modevent, - NULL -}; -DECLARE_MODULE(syscall_gate, syscall_gate_moduledata, SI_SUB_DRIVERS, SI_ORDER_ANY); -MODULE_VERSION(syscall_gate, 1); |