1  /* ID for functions called via socketcall system call.
       2     Copyright (C) 1995-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #ifndef _SYS_SOCKETCALL_H
      20  #define _SYS_SOCKETCALL_H	1
      21  
      22  #include <sysdep.h>
      23  
      24  /* Define unique numbers for the operations permitted on socket.  Linux
      25     uses a single system call for all these functions.  The relevant code
      26     file is /usr/include/linux/net.h.
      27     We cannot use an enum here because the values are used in assembler
      28     code.  */
      29  
      30  #define SOCKOP_invalid		-1
      31  #define SOCKOP_socket		1
      32  #define SOCKOP_bind		2
      33  #define SOCKOP_connect		3
      34  #define SOCKOP_listen		4
      35  #define SOCKOP_accept		5
      36  #define SOCKOP_getsockname	6
      37  #define SOCKOP_getpeername	7
      38  #define SOCKOP_socketpair	8
      39  #define SOCKOP_send		9
      40  #define SOCKOP_recv		10
      41  #define SOCKOP_sendto		11
      42  #define SOCKOP_recvfrom		12
      43  #define SOCKOP_shutdown		13
      44  #define SOCKOP_setsockopt	14
      45  #define SOCKOP_getsockopt	15
      46  #define SOCKOP_sendmsg		16
      47  #define SOCKOP_recvmsg		17
      48  #define SOCKOP_accept4		18
      49  #define SOCKOP_recvmmsg		19
      50  #define SOCKOP_sendmmsg		20
      51  
      52  #define __SOCKETCALL1(name, a1) \
      53    INLINE_SYSCALL (socketcall, 2, name, \
      54       ((long int [1]) { (long int) (a1) }))
      55  #define __SOCKETCALL2(name, a1, a2) \
      56    INLINE_SYSCALL (socketcall, 2, name, \
      57       ((long int [2]) { (long int) (a1), (long int) (a2) }))
      58  #define __SOCKETCALL3(name, a1, a2, a3) \
      59    INLINE_SYSCALL (socketcall, 2, name, \
      60       ((long int [3]) { (long int) (a1), (long int) (a2), (long int) (a3) }))
      61  #define __SOCKETCALL4(name, a1, a2, a3, a4) \
      62    INLINE_SYSCALL (socketcall, 2, name, \
      63       ((long int [4]) { (long int) (a1), (long int) (a2), (long int) (a3), \
      64                         (long int) (a4) }))
      65  #define __SOCKETCALL5(name, a1, a2, a3, a4, a5) \
      66    INLINE_SYSCALL (socketcall, 2, name, \
      67       ((long int [5]) { (long int) (a1), (long int) (a2), (long int) (a3), \
      68                         (long int) (a4), (long int) (a5) }))
      69  #define __SOCKETCALL6(name, a1, a2, a3, a4, a5, a6) \
      70    INLINE_SYSCALL (socketcall, 2, name, \
      71       ((long int [6]) { (long int) (a1), (long int) (a2), (long int) (a3), \
      72                         (long int) (a4), (long int) (a5), (long int) (a6) }))
      73  
      74  #define __SOCKETCALL_NARGS_X(a,b,c,d,e,f,g,h,n,...) n
      75  #define __SOCKETCALL_NARGS(...) \
      76    __SOCKETCALL_NARGS_X (__VA_ARGS__,7,6,5,4,3,2,1,0,)
      77  #define __SOCKETCALL_CONCAT_X(a,b)     a##b
      78  #define __SOCKETCALL_CONCAT(a,b)       __SOCKETCALL_CONCAT_X (a, b)
      79  #define __SOCKETCALL_DISP(b,...) \
      80    __SOCKETCALL_CONCAT (b,__SOCKETCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
      81  
      82  #define __SOCKETCALL(...) __SOCKETCALL_DISP (__SOCKETCALL, __VA_ARGS__)
      83  
      84  
      85  #define SOCKETCALL(name, args...)					\
      86    ({									\
      87      long int sc_ret = __SOCKETCALL (SOCKOP_##name, args);		\
      88      sc_ret;								\
      89    })
      90  
      91  
      92  #define SOCKETCALL_CANCEL(name, args...)				\
      93    ({									\
      94      int oldtype = LIBC_CANCEL_ASYNC ();					\
      95      long int sc_ret = __SOCKETCALL (SOCKOP_##name, args);		\
      96      LIBC_CANCEL_RESET (oldtype);					\
      97      sc_ret;								\
      98    })
      99  
     100  
     101  #endif /* sys/socketcall.h */