140 lines
4.2 KiB
C++
140 lines
4.2 KiB
C++
/* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <time.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifndef _WIN32
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#include <utime.h>
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#else
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#include <sys/utime.h>
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#endif
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#include "my_config.h"
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#include "m_string.h"
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#include "my_dbug.h"
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#include "my_dir.h"
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#include "my_inttypes.h"
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#include "my_io.h"
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#include "my_sys.h"
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#include "my_systime.h" // get_date
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#include "my_thread_local.h"
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#include "mysys_err.h"
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#include "storage/myisam/myisam_sys.h"
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/*
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Rename with copy stat form old file
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Copy stats from old file to new file, deletes orginal and
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changes new file name to old file name
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if MY_REDEL_MAKE_COPY is given, then the orginal file
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is renamed to org_name-'current_time'.BAK
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if MY_REDEL_NO_COPY_STAT is given, stats are not copied
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from org_name to tmp_name.
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*/
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#define REDEL_EXT ".BAK"
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int my_redel(const char *org_name, const char *tmp_name, myf MyFlags) {
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int error = 1;
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DBUG_TRACE;
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DBUG_PRINT("my", ("org_name: '%s' tmp_name: '%s' MyFlags: %d", org_name,
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tmp_name, MyFlags));
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if (!(MyFlags & MY_REDEL_NO_COPY_STAT)) {
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if (my_copystat(org_name, tmp_name, MyFlags) < 0) goto end;
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}
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if (MyFlags & MY_REDEL_MAKE_BACKUP) {
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char name_buff[FN_REFLEN + 20];
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char ext[20];
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ext[0] = '-';
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get_date(ext + 1, 2 + 4, (time_t)0);
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my_stpcpy(strend(ext), REDEL_EXT);
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if (my_rename(org_name, fn_format(name_buff, org_name, "", ext, 2),
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MyFlags))
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goto end;
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} else if (my_delete_allow_opened(org_name, MyFlags))
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goto end;
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if (my_rename(tmp_name, org_name, MyFlags)) goto end;
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error = 0;
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end:
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return error;
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} /* my_redel */
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/* Copy stat from one file to another */
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/* Return -1 if can't get stat, 1 if wrong type of file */
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int my_copystat(const char *from, const char *to, int MyFlags) {
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MY_STAT statbuf;
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if (my_stat(from, &statbuf, MyFlags) == NULL)
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return -1; /* Can't get stat on input file */
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if ((statbuf.st_mode & S_IFMT) != S_IFREG) return 1;
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/* Copy modes */
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if (chmod(to, statbuf.st_mode & 07777)) {
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set_my_errno(errno);
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if (MyFlags & (MY_FAE + MY_WME)) {
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char errbuf[MYSYS_STRERROR_SIZE];
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my_error(EE_CHANGE_PERMISSIONS, MYF(0), from, errno,
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my_strerror(errbuf, sizeof(errbuf), errno));
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}
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return -1;
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}
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#if !defined(_WIN32)
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if (statbuf.st_nlink > 1 && MyFlags & MY_LINK_WARNING) {
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if (MyFlags & MY_LINK_WARNING)
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my_error(EE_LINK_WARNING, MYF(0), from, statbuf.st_nlink);
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}
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/* Copy ownership */
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if (chown(to, statbuf.st_uid, statbuf.st_gid)) {
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set_my_errno(errno);
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if (MyFlags & (MY_FAE + MY_WME)) {
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char errbuf[MYSYS_STRERROR_SIZE];
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my_error(EE_CHANGE_OWNERSHIP, MYF(0), from, errno,
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my_strerror(errbuf, sizeof(errbuf), errno));
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}
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return -1;
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}
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#endif /* !_WIN32 */
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if (MyFlags & MY_COPYTIME) {
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struct utimbuf timep;
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timep.actime = statbuf.st_atime;
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timep.modtime = statbuf.st_mtime;
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(void)utime(to, &timep); /* Update last accessed and modified times */
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}
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return 0;
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} /* my_copystat */
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