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glibc/hurd/vpprintf.c
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/* Copyright (C) 1991-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <stdarg.h> | |
#include <stdio.h> | |
#include <string.h> | |
#include <hurd.h> | |
#include <libioP.h> | |
static ssize_t | |
do_write (void *cookie, const char *buf, size_t n) | |
{ | |
error_t error = __io_write ((io_t) cookie, buf, n, -1, | |
(mach_msg_type_number_t *) &n); | |
if (error) | |
return __hurd_fail (error); | |
return n; | |
} | |
/* Write formatted output to PORT, a Mach port supporting the i/o protocol, | |
according to the format string FORMAT, using the argument list in ARG. */ | |
int | |
vpprintf (io_t port, const char *format, va_list arg) | |
{ | |
int done; | |
struct locked_FILE | |
{ | |
struct _IO_cookie_file cfile; | |
#ifdef _IO_MTSAFE_IO | |
_IO_lock_t lock; | |
#endif | |
} temp_f; | |
#ifdef _IO_MTSAFE_IO | |
temp_f.cfile.__fp.file._lock = &temp_f.lock; | |
#endif | |
_IO_cookie_init (&temp_f.cfile, _IO_NO_READS, | |
(void *) port, (cookie_io_functions_t) { write: do_write }); | |
done = _IO_vfprintf (&temp_f.cfile.__fp.file, format, arg); | |
return done; | |
} |