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- /* Copyright (c) 2000, 2021, Oracle and/or its affiliates.
-
- 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 */
-
- /* Open a temporary file and cache it with io_cache. Delete it on close */
-
- #include "my_global.h"
- #include "mysys_priv.h"
- #include "mysql/psi/mysql_file.h"
- #include "my_sys.h"
- #include <m_string.h>
- #include "my_static.h"
- #include "mysys_err.h"
-
- /*
- Remove an open tempfile so that it doesn't survive
- if we crash.
- */
-
- static my_bool cache_remove_open_tmp(IO_CACHE *cache MY_ATTRIBUTE((unused)),
- const char *name)
- {
- #if O_TEMPORARY == 0
- /* The following should always succeed */
- (void) my_delete(name,MYF(MY_WME));
- #endif /* O_TEMPORARY == 0 */
- return 0;
- }
-
- /*
- ** Open tempfile cached by IO_CACHE
- ** Should be used when no seeks are done (only reinit_io_buff)
- ** Return 0 if cache is inited ok
- ** The actual file is created when the IO_CACHE buffer gets filled
- ** If dir is not given, use TMPDIR.
- */
-
- my_bool open_cached_file(IO_CACHE *cache, const char* dir, const char *prefix,
- size_t cache_size, myf cache_myflags)
- {
- DBUG_ENTER("open_cached_file");
- cache->dir= dir ? my_strdup(key_memory_IO_CACHE,
- dir,MYF(cache_myflags & MY_WME)) : (char*) 0;
- cache->prefix= (prefix ? my_strdup(key_memory_IO_CACHE,
- prefix,MYF(cache_myflags & MY_WME)) :
- (char*) 0);
- cache->file_name=0;
- cache->buffer=0; /* Mark that not open */
- if (!init_io_cache(cache,-1,cache_size,WRITE_CACHE,0L,0,
- MYF(cache_myflags | MY_NABP)))
- {
- DBUG_RETURN(0);
- }
- my_free(cache->dir);
- my_free(cache->prefix);
- DBUG_RETURN(1);
- }
-
- /* Create the temporary file */
-
- my_bool real_open_cached_file(IO_CACHE *cache)
- {
- char name_buff[FN_REFLEN];
- int error=1;
- DBUG_ENTER("real_open_cached_file");
- if ((cache->file= mysql_file_create_temp(cache->file_key, name_buff,
- cache->dir, cache->prefix,
- (O_RDWR | O_BINARY | O_TRUNC | O_TEMPORARY | O_SHORT_LIVED),
- MYF(MY_WME))) >= 0)
- {
- error=0;
- cache_remove_open_tmp(cache, name_buff);
- }
- DBUG_RETURN(error);
- }
-
-
- void close_cached_file(IO_CACHE *cache)
- {
- DBUG_ENTER("close_cached_file");
- if (my_b_inited(cache))
- {
- File file=cache->file;
- cache->file= -1; /* Don't flush data */
- (void) end_io_cache(cache);
- if (file >= 0)
- {
- (void) mysql_file_close(file, MYF(0));
- }
- my_free(cache->dir);
- my_free(cache->prefix);
- }
- DBUG_VOID_RETURN;
- }
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