1  /* Copyright (C) 1994-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <errno.h>
      19  #include <sys/socket.h>
      20  #include <hurd.h>
      21  #include <hurd/socket.h>
      22  #include <hurd/fd.h>
      23  #include <sysdep-cancel.h>
      24  
      25  /* Send N bytes of BUF to socket FD.  Returns the number sent or -1.  */
      26  ssize_t
      27  __send (int fd, const void *buf, size_t n, int flags)
      28  {
      29    error_t err;
      30    vm_size_t wrote;
      31    int cancel_oldtype;
      32  
      33    cancel_oldtype = LIBC_CANCEL_ASYNC();
      34    err = HURD_DPORT_USE_CANCEL (fd, __socket_send (port, MACH_PORT_NULL,
      35  						  flags, buf, n,
      36  						  NULL, MACH_MSG_TYPE_COPY_SEND, 0,
      37  						  NULL, 0, &wrote));
      38    LIBC_CANCEL_RESET (cancel_oldtype);
      39  
      40    if (err == MIG_BAD_ID || err == EOPNOTSUPP)
      41      /* The file did not grok the socket protocol.  */
      42      err = ENOTSOCK;
      43  
      44    return err ? __hurd_sockfail (fd, flags, err) : wrote;
      45  }
      46  libc_hidden_def (__send)
      47  weak_alias (__send, send)