You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
3.7 KiB
99 lines
3.7 KiB
5 months ago
|
/* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
|
||
|
|
|
||
|
|
This program is free software; you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU General Public License, version 2.0,
|
||
|
|
as published by the Free Software Foundation.
|
||
|
|
|
||
|
|
This program is also distributed with certain software (including
|
||
|
|
but not limited to OpenSSL) that is licensed under separate terms,
|
||
|
|
as designated in a particular file or component or in included license
|
||
|
|
documentation. The authors of MySQL hereby grant you an additional
|
||
|
|
permission to link the program and your derivative works with the
|
||
|
|
separately licensed software that they have included with MySQL.
|
||
|
|
|
||
|
|
Without limiting anything contained in the foregoing, this file,
|
||
|
|
which is part of C Driver for MySQL (Connector/C), is also subject to the
|
||
|
|
Universal FOSS Exception, version 1.0, a copy of which can be found at
|
||
|
|
http://oss.oracle.com/licenses/universal-foss-exception.
|
||
|
|
|
||
|
|
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, version 2.0, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
|
||
|
|
|
||
|
|
/**
|
||
|
|
@file mysys/mf_loadpath.cc
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <string.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
|
||
|
|
#include "m_string.h"
|
||
|
|
#include "my_dbug.h"
|
||
|
|
#include "my_inttypes.h"
|
||
|
|
#include "my_io.h"
|
||
|
|
#include "my_sys.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
Returns full load-path for a file. to may be = path.
|
||
|
|
|
||
|
|
Pre-condition: At least FN_REFLEN bytes can be stored in buffer
|
||
|
|
pointed to by 'to'. 'path' and 'own_path_prefix' are '\0'-terminated
|
||
|
|
byte buffers.
|
||
|
|
|
||
|
|
Post-condition: At most FN_REFLEN bytes will have been written to
|
||
|
|
'to'. If the combined length of 'from' and any expanded elements
|
||
|
|
exceeds FN_REFLEN-1, the result is truncated and likely not what the
|
||
|
|
caller expects.
|
||
|
|
|
||
|
|
@param to Pointer to destination which will hold the expanded path.
|
||
|
|
@param path Pointer to buffer containing the supplied path.
|
||
|
|
@param own_path_prefix Prefix to be appended to path.
|
||
|
|
|
||
|
|
@retval to Pointer to the supplied destination buffer
|
||
|
|
that will hold the full load-path.
|
||
|
|
*/
|
||
|
|
|
||
|
|
char *my_load_path(char *to, const char *path, const char *own_path_prefix) {
|
||
|
|
char buff[FN_REFLEN];
|
||
|
|
int cur_prefix_len;
|
||
|
|
const char *buff_ptr = path;
|
||
|
|
|
||
|
|
DBUG_TRACE;
|
||
|
|
DBUG_PRINT("enter", ("path: %s prefix: %s", path,
|
||
|
|
own_path_prefix ? own_path_prefix : ""));
|
||
|
|
|
||
|
|
cur_prefix_len = (path[0] == FN_CURLIB && path[1] == FN_LIBCHAR) ? 2 : 0;
|
||
|
|
|
||
|
|
// If path starts with current dir or parent-dir unpack path.
|
||
|
|
if (cur_prefix_len || is_prefix(path, FN_PARENTDIR)) {
|
||
|
|
if ((strlen(path) + cur_prefix_len) < FN_REFLEN &&
|
||
|
|
!my_getwd(buff, (uint)(FN_REFLEN - strlen(path) + cur_prefix_len),
|
||
|
|
MYF(0))) {
|
||
|
|
(void)strncat(buff, path + cur_prefix_len, FN_REFLEN - strlen(buff) - 1);
|
||
|
|
buff_ptr = buff;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
Prepend the path with own_path_prefix if own_path_prefix is
|
||
|
|
specified and path doesn't start with home directory character
|
||
|
|
and path is not a hard-path.
|
||
|
|
If path is hard path or home dir, return the path.
|
||
|
|
*/
|
||
|
|
else if (own_path_prefix != NULL &&
|
||
|
|
!(path[0] == FN_HOMELIB && path[1] == FN_LIBCHAR) &&
|
||
|
|
!test_if_hard_path(path)) {
|
||
|
|
(void)strxnmov(buff, sizeof(buff) - 1, own_path_prefix, path, NullS);
|
||
|
|
buff_ptr = buff;
|
||
|
|
}
|
||
|
|
|
||
|
|
my_stpnmov(to, buff_ptr, FN_REFLEN);
|
||
|
|
to[FN_REFLEN - 1] = '\0';
|
||
|
|
DBUG_PRINT("exit", ("to: %s", to));
|
||
|
|
return to;
|
||
|
|
} /* my_load_path */
|