sys/compat/linux32/common/linux32_socketcall.c

   1 /*      $NetBSD: linux32_socketcall.c,v 1.6 2007/12/20 23:02:58 dsl Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Emmanuel Dreyfus
  17  * 4. The name of the author may not be used to endorse or promote
  18  *    products derived from this software without specific prior written
  19  *    permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
  22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  23  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
  25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: linux32_socketcall.c,v 1.6 2007/12/20 23:02:58 dsl Exp $");
  35
  36 #include <sys/types.h>
  37 #include <sys/param.h>
  38 #include <sys/time.h>
  39 #include <sys/proc.h>
  40 #include <sys/ucred.h>
  41 #include <sys/ktrace.h>
  42
  43 #include <compat/netbsd32/netbsd32.h>
  44 #include <compat/netbsd32/netbsd32_syscallargs.h>
  45
  46 #include <compat/linux/common/linux_types.h>
  47 #include <compat/linux/common/linux_signal.h>
  48 #include <compat/linux/common/linux_ipc.h>
  49 #include <compat/linux/common/linux_sem.h>
  50 #include <compat/linux/linux_syscallargs.h>
  51
  52 #include <compat/linux32/common/linux32_types.h>
  53 #include <compat/linux32/common/linux32_signal.h>
  54 #include <compat/linux32/common/linux32_machdep.h>
  55 #include <compat/linux32/common/linux32_sysctl.h>
  56 #include <compat/linux32/common/linux32_socketcall.h>
  57 #include <compat/linux32/linux32_syscallargs.h>
  58
  59 #define sc(emul, fn) { #fn, sizeof (struct emul##_##fn##_args), \
  60         (int (*)(struct lwp *, const void *, register_t *))emul##_##fn }
  61
  62 static const struct {
  63         const char *name;
  64         int argsize;
  65         int (*syscall)(struct lwp *, const void *, register_t *);
  66 } linux32_socketcall[LINUX32_MAX_SOCKETCALL+1] = {
  67         {"invalid",     -1, NULL},
  68         sc(linux32_sys, socket),
  69         sc(linux32_sys, bind),
  70         sc(linux32_sys, connect),
  71         sc(netbsd32, listen),
  72         sc(linux32_sys, accept),
  73         sc(linux32_sys, getsockname),
  74         sc(linux32_sys, getpeername),
  75         sc(linux32_sys, socketpair),
  76         sc(linux32_sys, send),
  77         sc(linux32_sys, recv),
  78         sc(linux32_sys, sendto),
  79         sc(linux32_sys, recvfrom),
  80         sc(netbsd32, shutdown),
  81         sc(linux32_sys, setsockopt),
  82         sc(linux32_sys, getsockopt),
  83         sc(linux32_sys, sendmsg),
  84         sc(linux32_sys, recvmsg),
  85 };
  86 #undef sc
  87
  88
  89 int
  90 linux32_sys_socketcall(struct lwp *l, const struct linux32_sys_socketcall_args *uap, register_t *retval)
  91 {
  92         /* {
  93                 syscallarg(int) what;
  94                 syscallarg(netbsd32_voidp) args;
  95         } */
  96         union linux32_socketcall_args ua;
  97         int error;
  98
  99         if (SCARG(uap, what) < 0 || SCARG(uap, what) > LINUX32_MAX_SOCKETCALL)
 100                 return ENOSYS;
 101
 102         if ((error = copyin(SCARG_P32(uap, args), &ua,
 103             linux32_socketcall[SCARG(uap, what)].argsize)) != 0)
 104                 return error;
 105
 106         /* Trace the socket-call arguments as 'GIO' on fd -1 */
 107         ktrkuser(linux32_socketcall[SCARG(uap, what)].name, &ua,
 108             linux32_socketcall[SCARG(uap, what)].argsize);
 109
 110         return linux32_socketcall[SCARG(uap, what)].syscall(l, &ua, retval);
 111 }