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90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/* Copyright (C) 1994-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <stdarg.h>
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#include <stdio.h>
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#include "../libio/libioP.h"
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#include "../libio/strfile.h"
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static int _IO_str_chk_overflow (_IO_FILE *fp, int c) __THROW;
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static int
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_IO_str_chk_overflow (_IO_FILE *fp, int c)
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{
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/* When we come to here this means the user supplied buffer is
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filled. */
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__chk_fail ();
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}
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static const struct _IO_jump_t _IO_str_chk_jumps libio_vtable =
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{
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JUMP_INIT_DUMMY,
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JUMP_INIT(finish, _IO_str_finish),
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JUMP_INIT(overflow, _IO_str_chk_overflow),
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JUMP_INIT(underflow, _IO_str_underflow),
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JUMP_INIT(uflow, _IO_default_uflow),
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JUMP_INIT(pbackfail, _IO_str_pbackfail),
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JUMP_INIT(xsputn, _IO_default_xsputn),
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JUMP_INIT(xsgetn, _IO_default_xsgetn),
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JUMP_INIT(seekoff, _IO_str_seekoff),
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JUMP_INIT(seekpos, _IO_default_seekpos),
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JUMP_INIT(setbuf, _IO_default_setbuf),
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JUMP_INIT(sync, _IO_default_sync),
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JUMP_INIT(doallocate, _IO_default_doallocate),
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JUMP_INIT(read, _IO_default_read),
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JUMP_INIT(write, _IO_default_write),
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JUMP_INIT(seek, _IO_default_seek),
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JUMP_INIT(close, _IO_default_close),
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JUMP_INIT(stat, _IO_default_stat),
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JUMP_INIT(showmanyc, _IO_default_showmanyc),
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JUMP_INIT(imbue, _IO_default_imbue)
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};
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int
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___vsprintf_chk (char *s, int flags, size_t slen, const char *format,
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va_list args)
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{
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_IO_strfile f;
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int ret;
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#ifdef _IO_MTSAFE_IO
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f._sbf._f._lock = NULL;
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#endif
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if (slen == 0)
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__chk_fail ();
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_IO_no_init (&f._sbf._f, _IO_USER_LOCK, -1, NULL, NULL);
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_IO_JUMPS (&f._sbf) = &_IO_str_chk_jumps;
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s[0] = '\0';
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_IO_str_init_static_internal (&f, s, slen - 1, s);
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/* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
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can only come from read-only format strings. */
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if (flags > 0)
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f._sbf._f._flags2 |= _IO_FLAGS2_FORTIFY;
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ret = _IO_vfprintf (&f._sbf._f, format, args);
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*f._sbf._f._IO_write_ptr = '\0';
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return ret;
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}
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ldbl_hidden_def (___vsprintf_chk, __vsprintf_chk)
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ldbl_strong_alias (___vsprintf_chk, __vsprintf_chk)
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