OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libssp/] [gets-chk.c] - Blame information for rev 329

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 276 jeremybenn
/* Checking gets.
2
   Copyright (C) 2005, 2009 Free Software Foundation, Inc.
3
 
4
This file is part of GCC.
5
 
6
GCC is free software; you can redistribute it and/or modify it under
7
the terms of the GNU General Public License as published by the Free
8
Software Foundation; either version 3, or (at your option) any later
9
version.
10
 
11
In addition to the permissions in the GNU General Public License, the
12
Free Software Foundation gives you unlimited permission to link the
13
compiled version of this file into combinations with other programs,
14
and to distribute those combinations without any restriction coming
15
from the use of this file.  (The General Public License restrictions
16
do apply in other respects; for example, they cover modification of
17
the file, and distribution when not linked into a combine
18
executable.)
19
 
20
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
21
WARRANTY; without even the implied warranty of MERCHANTABILITY or
22
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
23
for more details.
24
 
25
Under Section 7 of GPL version 3, you are granted additional
26
permissions described in the GCC Runtime Library Exception, version
27
3.1, as published by the Free Software Foundation.
28
 
29
You should have received a copy of the GNU General Public License and
30
a copy of the GCC Runtime Library Exception along with this program;
31
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
32
<http://www.gnu.org/licenses/>.  */
33
 
34
 
35
#include "config.h"
36
#include <ssp/ssp.h>
37
#include <stdarg.h>
38
#ifdef HAVE_STDLIB_H
39
# include <stdlib.h>
40
#endif
41
#ifdef HAVE_ALLOCA_H
42
# include <alloca.h>
43
#endif
44
#ifdef HAVE_LIMITS_H
45
# include <limits.h>
46
#endif
47
#ifdef HAVE_STDIO_H
48
# include <stdio.h>
49
#endif
50
#ifdef HAVE_STRING_H
51
# include <string.h>
52
#endif
53
 
54
extern void __chk_fail (void) __attribute__((__noreturn__));
55
 
56
char *
57
__gets_chk (char *s, size_t slen)
58
{
59
  char *ret, *buf;
60
 
61
  if (slen >= (size_t) INT_MAX)
62
    return gets (s);
63
 
64
  if (slen <= 8192)
65
    buf = alloca (slen + 1);
66
  else
67
    buf = malloc (slen + 1);
68
  if (buf == NULL)
69
    return gets (s);
70
 
71
  ret = fgets (buf, (int) (slen + 1), stdin);
72
  if (ret != NULL)
73
    {
74
      size_t len = strlen (buf);
75
      if (len > 0 && buf[len - 1] == '\n')
76
        --len;
77
      if (len == slen)
78
        __chk_fail ();
79
      memcpy (s, buf, len);
80
      s[len] = '\0';
81
      ret = s;
82
    }
83
 
84
  if (slen > 8192)
85
    free (buf);
86
  return ret;
87
}

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.