1: /* Copyright (C) 1991,94,97,2000,01 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, write to the Free
   16:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   17:    02111-1307 USA.  */
   18: 
   19: #include <stdarg.h>
   20: #include <stdio.h>
   21: #include <string.h>
   22: #include <hurd.h>
   23: 
   24: #ifdef USE_IN_LIBIO
   25: # include <libioP.h>
   26: #endif
   27: 
   28: static ssize_t
   29: do_write (void *cookie, const char *buf, size_t n)
   30: {
   31:   error_t error = __io_write ((io_t) cookie, buf, n, -1,
   32:                               (mach_msg_type_number_t *) &n);
   33:   if (error)
   34:     return __hurd_fail (error);
   35:   return n;
   36: }
   37: 
   38: /* Write formatted output to PORT, a Mach port supporting the i/o protocol,
   39:    according to the format string FORMAT, using the argument list in ARG.  */
   40: int
   41: vpprintf (io_t port, const char *format, va_list arg)
   42: {
   43:   int done;
   44: 
   45: #ifdef USE_IN_LIBIO
   46: 
   47:   struct locked_FILE
   48:   {
   49:     struct _IO_cookie_file cfile;
   50: #ifdef _IO_MTSAFE_IO
   51:     _IO_lock_t lock;
   52: #endif
   53:   } temp_f;
   54: #ifdef _IO_MTSAFE_IO
   55:   temp_f.cfile.__fp.file._lock = &temp_f.lock;
   56: #endif
   57: 
   58:   _IO_cookie_init (&temp_f.cfile, _IO_NO_READS,
   59:                    (void *) port, (cookie_io_functions_t) { write: do_write });
   60: 
   61:   done = _IO_vfprintf (&temp_f.cfile.__fp.file, format, arg);
   62: 
   63: #else
   64: 
   65:   FILE f;
   66: 
   67:   /* Create an unbuffered stream talking to PORT on the stack.  */
   68:   memset ((void *) &f, 0, sizeof (f));
   69:   f.__magic = _IOMAGIC;
   70:   f.__mode.__write = 1;
   71:   f.__cookie = (void *) port;
   72:   f.__room_funcs = __default_room_functions;
   73:   f.__io_funcs.__write = do_write;
   74:   f.__seen = 1;
   75:   f.__userbuf = 1;
   76: 
   77:   /* vfprintf will use a buffer on the stack for the life of the call.  */
   78:   done = vfprintf (&f, format, arg);
   79: 
   80: #endif
   81: 
   82:   return done;
   83: }