1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/* Safe version of strerror for MinGW, for GDB, the GNU debugger.
Copyright (C) 2006-2015 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "common-defs.h"
#include <windows.h>
/* Implementation of safe_strerror as defined in common-utils.h.
The Windows runtime implementation of strerror never returns NULL,
but does return a useless string for anything above sys_nerr;
unfortunately this includes all socket-related error codes.
This replacement tries to find a system-provided error message. */
char *
safe_strerror (int errnum)
{
static char *buffer;
int len;
if (errnum >= 0 && errnum < sys_nerr)
return strerror (errnum);
if (buffer)
{
LocalFree (buffer);
buffer = NULL;
}
if (FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER
| FORMAT_MESSAGE_FROM_SYSTEM,
NULL, errnum,
MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &buffer, 0, NULL) == 0)
{
static char buf[32];
xsnprintf (buf, sizeof buf, "(undocumented errno %d)", errnum);
return buf;
}
/* Windows error messages end with a period and a CR-LF; strip that
out. */
len = strlen (buffer);
if (len > 3 && strcmp (buffer + len - 3, ".\r\n") == 0)
buffer[len - 3] = '\0';
return buffer;
}
|
