FreeBSD/Linux Kernel Cross Reference
sys/compat/darwin/darwin_thread.c

     /*      $NetBSD: darwin_thread.c,v 1.16 2008/04/28 20:23:41 martin Exp $ */
     
     /*-
      * Copyright (c) 2002 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Emmanuel Dreyfus.
      *
     * 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: darwin_thread.c,v 1.16 2008/04/28 20:23:41 martin Exp $");
    
    #include <sys/types.h>
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/signal.h>
    #include <sys/mount.h>
    #include <sys/proc.h>
    
    #include <sys/syscallargs.h>
    
    #include <compat/sys/signal.h>
    
    #include <compat/mach/mach_types.h>
    #include <compat/mach/mach_exec.h>
    #include <compat/mach/mach_vm.h>
    
    #include <compat/darwin/darwin_audit.h>
    #include <compat/darwin/darwin_signal.h>
    #include <compat/darwin/darwin_syscallargs.h>
    
    #include <machine/darwin_machdep.h>
    
    /*
     * darwin_fork_child_return() sets the return values as expected by Darwin
     * userland: libSystem stub expects the child pid to be in retval[0] for
     * the parent as well as the child.
     */
    int
    darwin_sys_fork(struct lwp *l, const void *v, register_t *retval)
    {
            int error;
    
            if ((error = fork1(l, 0, SIGCHLD, NULL, 0,
                darwin_fork_child_return, NULL, retval, NULL)) != 0)
                    return error;
    
            return 0;
    }
    
    int
    darwin_sys_vfork(struct lwp *l, const void *v, register_t *retval)
    {
            int error;
    
            if ((error = fork1(l, FORK_PPWAIT, SIGCHLD, NULL, 0,
                darwin_fork_child_return, NULL, retval, NULL)) != 0)
                    return error;
    
            return 0;
    }
    
    int
    darwin_sys_pthread_exit(struct lwp *l, const struct darwin_sys_pthread_exit_args *uap, register_t *retval)
    {
            /* {
                    syscallarg(void *) value_ptr;
            } */
            struct sys_exit_args cup;
            struct mach_emuldata *med;
            struct proc *p = l->l_proc;
            int error;
    
            /* Get the status or use zero if it is not possible */
            if ((error = copyin(SCARG(uap, value_ptr), &SCARG(&cup, rval),
                sizeof(void *))) != 0)
                    SCARG(&cup, rval) = 0;
   
           /* Avoid destroying the parent's rights in mach_e_proc_exit */
           med = (struct mach_emuldata *)p->p_emuldata;
           LIST_INIT(&med->med_right);
   
           return sys_exit(l, &cup, retval);
   }

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