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/* Copyright (C) 2000 MySQL AB
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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "mysys_priv.h"
#include <m_string.h>
#ifdef __WIN__
/*
Check a file or path for accessability.
SYNOPSIS
file_access()
path Path to file
amode Access method
DESCRIPTION
This function wraps the normal access method because the access
available in MSVCRT> +reports that filenames such as LPT1 and
COM1 are valid (they are but should not be so for us).
RETURN VALUES
0 ok
-1 error (We use -1 as my_access is mapped to access on other platforms)
*/
int my_access(const char *path, int amode)
{
WIN32_FILE_ATTRIBUTE_DATA fileinfo;
BOOL result;
result= GetFileAttributesEx(path, GetFileExInfoStandard, &fileinfo);
if (! result ||
(fileinfo.dwFileAttributes & FILE_ATTRIBUTE_READONLY) && (amode & W_OK))
{
my_errno= errno= EACCES;
return -1;
}
return 0;
}
#endif /* __WIN__ */
#if defined(MSDOS) || defined(__WIN__) || defined(__EMX__)
/*
List of file names that causes problem on windows
NOTE that one can also not have file names of type CON.TXT
*/
static const char *reserved_names[]=
{
"CON", "PRN", "AUX", "NUL", "COM1", "COM2", "COM3", "COM4", "COM5", "COM6",
"COM7", "COM8", "COM9", "LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6",
"LPT7", "LPT8", "LPT9", "CLOCK$",
NullS
};
#define MAX_RESERVED_NAME_LENGTH 6
/*
Check if a path will access a reserverd file name that may cause problems
SYNOPSIS
check_if_legal_filename
path Path to file
RETURN
0 ok
1 reserved file name
*/
int check_if_legal_filename(const char *path)
{
const char *end;
const char **reserved_name;
DBUG_ENTER("check_if_legal_filename");
path+= dirname_length(path); /* To start of filename */
if (!(end= strchr(path, FN_EXTCHAR)))
end= strend(path);
if (path == end || (uint) (end - path) > MAX_RESERVED_NAME_LENGTH)
DBUG_RETURN(0); /* Simplify inner loop */
for (reserved_name= reserved_names; *reserved_name; reserved_name++)
{
const char *reserved= *reserved_name; /* never empty */
const char *name= path;
do
{
if (*reserved != my_toupper(&my_charset_latin1, *name))
break;
if (++name == end && !reserved[1])
DBUG_RETURN(1); /* Found wrong path */
} while (*++reserved);
}
DBUG_RETURN(0);
}
#endif
#ifdef OS2
int check_if_legal_filename(const char *path)
{
return 0;
}
#endif /* OS2 */
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