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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 */
-
- #include "mysys_priv.h"
- #include "mysys_err.h"
- #include <my_sys.h>
- #include "my_thread_local.h"
-
-
- int my_delete(const char *name, myf MyFlags)
- {
- int err;
- DBUG_ENTER("my_delete");
- DBUG_PRINT("my",("name %s MyFlags %d", name, MyFlags));
-
- if ((err = unlink(name)) == -1)
- {
- set_my_errno(errno);
- if (MyFlags & (MY_FAE+MY_WME))
- {
- char errbuf[MYSYS_STRERROR_SIZE];
- my_error(EE_DELETE, MYF(0),
- name, errno, my_strerror(errbuf, sizeof(errbuf), errno));
- }
- }
- else if ((MyFlags & MY_SYNC_DIR) &&
- my_sync_dir_by_file(name, MyFlags))
- err= -1;
- DBUG_RETURN(err);
- } /* my_delete */
-
- #if defined(_WIN32)
- /**
- Delete file which is possibly not closed.
-
- This function is intended to be used exclusively as a temporal solution
- for Win NT in case when it is needed to delete a not closed file (note
- that the file must be opened everywhere with FILE_SHARE_DELETE mode).
- Deleting not-closed files can not be supported on Win 98|ME (and because
- of that is considered harmful).
-
- The function deletes the file with its preliminary renaming. This is
- because when not-closed share-delete file is deleted it still lives on
- a disk until it will not be closed everwhere. This may conflict with an
- attempt to create a new file with the same name. The deleted file is
- renamed to <name>.<num>.deleted where <name> - the initial name of the
- file, <num> - a hexadecimal number chosen to make the temporal name to
- be unique.
-
- @param the name of the being deleted file
- @param the flags instructing how to react on an error internally in
- the function
-
- @note The per-thread @c my_errno holds additional info for a caller to
- decide how critical the error can be.
-
- @retval
- 0 ok
- @retval
- 1 error
-
-
- */
- int nt_share_delete(const char *name, myf MyFlags)
- {
- char buf[MAX_PATH + 20];
- ulong cnt;
- DBUG_ENTER("nt_share_delete");
- DBUG_PRINT("my",("name %s MyFlags %d", name, MyFlags));
-
- for (cnt= GetTickCount(); cnt; cnt--)
- {
- errno= 0;
- sprintf(buf, "%s.%08X.deleted", name, cnt);
- if (MoveFile(name, buf))
- break;
-
- if ((errno= GetLastError()) == ERROR_ALREADY_EXISTS)
- continue;
-
- /* This happened during tests with MERGE tables. */
- if (errno == ERROR_ACCESS_DENIED)
- continue;
-
- DBUG_PRINT("warning", ("Failed to rename %s to %s, errno: %d",
- name, buf, errno));
- break;
- }
-
- if (errno == ERROR_FILE_NOT_FOUND)
- {
- set_my_errno(ENOENT); // marking, that `name' doesn't exist
- }
- else if (errno == 0)
- {
- if (DeleteFile(buf))
- DBUG_RETURN(0);
- /*
- The below is more complicated than necessary. For some reason, the
- assignment to my_errno clears the error number, which is retrieved
- by GetLastError() (VC2005EE). Assigning to errno first, allows to
- retrieve the correct value.
- */
- errno= GetLastError();
- if (errno == 0)
- set_my_errno(ENOENT); // marking, that `buf' doesn't exist
- else
- set_my_errno(errno);
- }
- else
- set_my_errno(errno);
-
- if (MyFlags & (MY_FAE+MY_WME))
- {
- char errbuf[MYSYS_STRERROR_SIZE];
- my_error(EE_DELETE, MYF(0),
- name, my_errno(), my_strerror(errbuf, sizeof(errbuf), my_errno()));
- }
- DBUG_RETURN(-1);
- }
- #endif
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