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-rw-r--r--mysys/my_redel.c155
1 files changed, 155 insertions, 0 deletions
diff --git a/mysys/my_redel.c b/mysys/my_redel.c
new file mode 100644
index 00000000..1a69eaa2
--- /dev/null
+++ b/mysys/my_redel.c
@@ -0,0 +1,155 @@
+/* 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(__WIN__)
+ 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 /* !__WIN__ */
+
+ 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);
+}