1: /* Copyright (C) 1994, 1997, 1999-2003, 2004, 2006
    2:    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, write to the Free
   17:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   18:    02111-1307 USA.  */
   19: 
   20: #include <stdarg.h>
   21: #include <stdio.h>
   22: #include "../libio/libioP.h"
   23: #include "../libio/strfile.h"
   24: 
   25: 
   26: static int _IO_str_chk_overflow (_IO_FILE *fp, int c) __THROW;
   27: 
   28: static int
   29: _IO_str_chk_overflow (fp, c)
   30:      _IO_FILE *fp;
   31:      int c;
   32: {
   33:   /* When we come to here this means the user supplied buffer is
   34:      filled.  */
   35:   __chk_fail ();
   36: }
   37: 
   38: 
   39: static const struct _IO_jump_t _IO_str_chk_jumps =
   40: {
   41:   JUMP_INIT_DUMMY,
   42:   JUMP_INIT(finish, _IO_str_finish),
   43:   JUMP_INIT(overflow, _IO_str_chk_overflow),
   44:   JUMP_INIT(underflow, INTUSE(_IO_str_underflow)),
   45:   JUMP_INIT(uflow, INTUSE(_IO_default_uflow)),
   46:   JUMP_INIT(pbackfail, INTUSE(_IO_str_pbackfail)),
   47:   JUMP_INIT(xsputn, INTUSE(_IO_default_xsputn)),
   48:   JUMP_INIT(xsgetn, INTUSE(_IO_default_xsgetn)),
   49:   JUMP_INIT(seekoff, INTUSE(_IO_str_seekoff)),
   50:   JUMP_INIT(seekpos, _IO_default_seekpos),
   51:   JUMP_INIT(setbuf, _IO_default_setbuf),
   52:   JUMP_INIT(sync, _IO_default_sync),
   53:   JUMP_INIT(doallocate, INTUSE(_IO_default_doallocate)),
   54:   JUMP_INIT(read, _IO_default_read),
   55:   JUMP_INIT(write, _IO_default_write),
   56:   JUMP_INIT(seek, _IO_default_seek),
   57:   JUMP_INIT(close, _IO_default_close),
   58:   JUMP_INIT(stat, _IO_default_stat),
   59:   JUMP_INIT(showmanyc, _IO_default_showmanyc),
   60:   JUMP_INIT(imbue, _IO_default_imbue)
   61: };
   62: 
   63: 
   64: int
   65: ___vsprintf_chk (char *s, int flags, size_t slen, const char *format,
   66:                  va_list args)
   67: {
   68:   _IO_strfile f;
   69:   int ret;
   70: #ifdef _IO_MTSAFE_IO
   71:   f._sbf._f._lock = NULL;
   72: #endif
   73: 
   74:   if (slen == 0)
   75:     __chk_fail ();
   76: 
   77:   _IO_no_init (&f._sbf._f, _IO_USER_LOCK, -1, NULL, NULL);
   78:   _IO_JUMPS ((struct _IO_FILE_plus *) &f._sbf) = &_IO_str_chk_jumps;
   79:   s[0] = '\0';
   80:   _IO_str_init_static_internal (&f, s, slen - 1, s);
   81: 
   82:   /* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
   83:      can only come from read-only format strings.  */
   84:   if (flags > 0)
   85:     f._sbf._f._flags2 |= _IO_FLAGS2_FORTIFY;
   86: 
   87:   ret = INTUSE(_IO_vfprintf) ((_IO_FILE *) &f._sbf, format, args);
   88: 
   89:   *f._sbf._f._IO_write_ptr = '\0';
   90:   return ret;
   91: }
   92: ldbl_hidden_def (___vsprintf_chk, __vsprintf_chk)
   93: ldbl_strong_alias (___vsprintf_chk, __vsprintf_chk)