FreeBSD/Linux Kernel Cross Reference
sys/compat/common/kern_sig_13.c

     /*      $NetBSD: kern_sig_13.c,v 1.19 2008/04/28 20:23:41 martin Exp $  */
     
     /*-
      * Copyright (c) 1998 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Charles M. Hannum.
      *
     * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: kern_sig_13.c,v 1.19 2008/04/28 20:23:41 martin Exp $");
    
    #include <sys/param.h>
    #include <sys/proc.h>
    #include <sys/signal.h>
    #include <sys/signalvar.h>
    #include <sys/systm.h>
    
    #include <sys/mount.h>
    #include <sys/syscallargs.h>
    
    #include <machine/limits.h>
    
    #include <compat/sys/signal.h>
    #include <compat/sys/signalvar.h>
    #include <compat/common/compat_util.h>
    #include <compat/common/compat_sigaltstack.h>
    
    void
    native_sigset13_to_sigset(const sigset13_t *oss, sigset_t *ss)
    {
    
            ss->__bits[0] = *oss;
            ss->__bits[1] = 0;
            ss->__bits[2] = 0;
            ss->__bits[3] = 0;
    }
    
    void
    native_sigset_to_sigset13(const sigset_t *ss, sigset13_t *oss)
    {
    
            *oss = ss->__bits[0];
    }
    
    void
    native_sigaction13_to_sigaction(const struct sigaction13 *osa, struct sigaction *sa)
    {
    
            sa->sa_handler = osa->osa_handler;
            native_sigset13_to_sigset(&osa->osa_mask, &sa->sa_mask);
            sa->sa_flags = osa->osa_flags;
    }
    
    void
    native_sigaction_to_sigaction13(const struct sigaction *sa, struct sigaction13 *osa)
    {
    
            osa->osa_handler = sa->sa_handler;
            native_sigset_to_sigset13(&sa->sa_mask, &osa->osa_mask);
            osa->osa_flags = sa->sa_flags;
    }
    
    int
    compat_13_sys_sigaltstack(struct lwp *l, const struct compat_13_sys_sigaltstack_args *uap, register_t *retval)
    {
            /* {
                    syscallarg(const struct sigaltstack13 *) nss;
                    syscallarg(struct sigaltstack13 *) oss;
            } */
            compat_sigaltstack(uap, sigaltstack13, SS_ONSTACK, SS_DISABLE);
    }
    
    int
    compat_13_sys_sigaction(struct lwp *l, const struct compat_13_sys_sigaction_args *uap, register_t *retval)
    {
            /* {
                   syscallarg(int) signum;
                   syscallarg(const struct sigaction13 *) nsa;
                   syscallarg(struct sigaction13 *) osa;
           } */
           struct sigaction13 nesa, oesa;
           struct sigaction nbsa, obsa;
           int error;
   
           if (SCARG(uap, nsa)) {
                   error = copyin(SCARG(uap, nsa), &nesa, sizeof(nesa));
                   if (error)
                           return (error);
                   native_sigaction13_to_sigaction(&nesa, &nbsa);
           }
           error = sigaction1(l, SCARG(uap, signum),
               SCARG(uap, nsa) ? &nbsa : 0, SCARG(uap, osa) ? &obsa : 0,
               NULL, 0);
           if (error)
                   return (error);
           if (SCARG(uap, osa)) {
                   native_sigaction_to_sigaction13(&obsa, &oesa);
                   error = copyout(&oesa, SCARG(uap, osa), sizeof(oesa));
                   if (error)
                           return (error);
           }
           return (0);
   }
   
   int
   compat_13_sys_sigprocmask(struct lwp *l, const struct compat_13_sys_sigprocmask_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(int) how;
                   syscallarg(int) mask;
           } */
           struct proc *p = l->l_proc;
           sigset13_t ness, oess;
           sigset_t nbss, obss;
           int error;
   
           ness = SCARG(uap, mask);
           native_sigset13_to_sigset(&ness, &nbss);
           mutex_enter(p->p_lock);
           error = sigprocmask1(l, SCARG(uap, how), &nbss, &obss);
           mutex_exit(p->p_lock);
           if (error)
                   return (error);
           native_sigset_to_sigset13(&obss, &oess);
           *retval = oess;
           return (0);
   }
   
   int
   compat_13_sys_sigpending(struct lwp *l, const void *v, register_t *retval)
   {
           sigset13_t ess;
           sigset_t bss;
   
           sigpending1(l, &bss);
           native_sigset_to_sigset13(&bss, &ess);
           *retval = ess;
           return (0);
   }
   
   int
   compat_13_sys_sigsuspend(struct lwp *l, const struct compat_13_sys_sigsuspend_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(sigset13_t) mask;
           } */
           sigset13_t ess;
           sigset_t bss;
   
           ess = SCARG(uap, mask);
           native_sigset13_to_sigset(&ess, &bss);
           return (sigsuspend1(l, &bss));
   }

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