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/* Copyright (c) 2000, 2010, Oracle and/or its affiliates
Copyright (c) 2009, 2016, MariaDB
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; version 2 of the License.
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
#include "mysys_priv.h"
#include "mysys_err.h"
#include <my_dir.h>
#include <m_string.h>
#include "mysys_err.h"
#if defined(HAVE_UTIME_H)
#include <utime.h>
#elif defined(HAVE_SYS_UTIME_H)
#include <sys/utime.h>
#elif !defined(HPUX10)
struct utimbuf {
time_t actime;
time_t modtime;
};
#endif
/*
Rename with copy stat form old file
Copy stats from old file to new file, deletes original and
changes new file name to old file name
if MY_REDEL_MAKE_COPY is given, then the original file
is renamed to org_name-'current_time'.BAK
*/
#define REDEL_EXT ".BAK"
int my_redel(const char *org_name, const char *tmp_name,
time_t backup_time_stamp, myf MyFlags)
{
int error=1;
DBUG_ENTER("my_redel");
DBUG_PRINT("my",("org_name: '%s' tmp_name: '%s' MyFlags: %lu",
org_name,tmp_name,MyFlags));
if (!my_disable_copystat_in_redel &&
my_copystat(org_name,tmp_name,MyFlags) < 0)
goto end;
if (MyFlags & MY_REDEL_MAKE_BACKUP)
{
char name_buff[FN_REFLEN + MY_BACKUP_NAME_EXTRA_LENGTH];
my_create_backup_name(name_buff, org_name, backup_time_stamp);
if (my_rename(org_name, name_buff, MyFlags))
goto end;
}
else if (my_delete(org_name, MyFlags))
goto end;
if (my_rename(tmp_name,org_name,MyFlags))
goto end;
error=0;
end:
DBUG_RETURN(error);
} /* my_redel */
/**
Copy stat from one file to another
@fn my_copystat()
@param from Copy stat from this file
@param to Copy stat to this file
@param MyFlags Flags:
MY_WME Give error if something goes wrong
MY_FAE Abort operation if something goes wrong
If MY_FAE is not given, we don't return -1 for
errors from chown (which normally require root
privilege)
@return 0 ok
-1 if can't get stat,
1 if wrong type of file
*/
int my_copystat(const char *from, const char *to, int MyFlags)
{
MY_STAT statbuf;
if (my_stat(from, &statbuf, MyFlags) == NULL)
return -1; /* Can't get stat on input file */
if ((statbuf.st_mode & S_IFMT) != S_IFREG)
return 1;
/* Copy modes */
if (chmod(to, statbuf.st_mode & 07777))
{
my_errno= errno;
if (MyFlags & (MY_FAE+MY_WME))
my_error(EE_CHANGE_PERMISSIONS, MYF(ME_BELL), from, errno);
return -1;
}
#if !defined(_WIN32)
if (statbuf.st_nlink > 1 && MyFlags & MY_LINK_WARNING)
{
if (MyFlags & MY_LINK_WARNING)
my_error(EE_LINK_WARNING,MYF(ME_BELL),from,statbuf.st_nlink);
}
/* Copy ownership */
if (chown(to, statbuf.st_uid, statbuf.st_gid))
{
my_errno= errno;
if (MyFlags & MY_WME)
my_error(EE_CHANGE_OWNERSHIP, MYF(ME_BELL), from, errno);
if (MyFlags & MY_FAE)
return -1;
}
#endif /* !_WIN32 */
if (MyFlags & MY_COPYTIME)
{
struct utimbuf timep;
timep.actime = statbuf.st_atime;
timep.modtime = statbuf.st_mtime;
(void) utime((char*) to, &timep);/* Update last accessed and modified times */
}
return 0;
} /* my_copystat */
/**
Create a backup file name.
@fn my_create_backup_name()
@param to Store new file name here
@param from Original name
@info
The backup name is made by adding -YYMMDDHHMMSS.BAK to the file name
*/
void my_create_backup_name(char *to, const char *from, time_t backup_start)
{
char ext[MY_BACKUP_NAME_EXTRA_LENGTH+1];
ext[0]='-';
get_date(ext+1, GETDATE_SHORT_DATE | GETDATE_HHMMSSTIME, backup_start);
strmov(strend(ext),REDEL_EXT);
strmov(strmov(to, from), ext);
}
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