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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:00:34 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:00:34 +0000
commit3f619478f796eddbba6e39502fe941b285dd97b1 (patch)
treee2c7b5777f728320e5b5542b6213fd3591ba51e2 /mysys/my_rename.c
parentInitial commit. (diff)
downloadmariadb-3f619478f796eddbba6e39502fe941b285dd97b1.tar.xz
mariadb-3f619478f796eddbba6e39502fe941b285dd97b1.zip
Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'mysys/my_rename.c')
-rw-r--r--mysys/my_rename.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/mysys/my_rename.c b/mysys/my_rename.c
new file mode 100644
index 00000000..cc3ed727
--- /dev/null
+++ b/mysys/my_rename.c
@@ -0,0 +1,104 @@
+/* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
+
+ 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 <my_dir.h>
+#include "mysys_err.h"
+#include "m_string.h"
+#undef my_rename
+
+
+#ifdef _WIN32
+
+#define RENAME_MAX_RETRIES 50
+
+/*
+ On Windows, bad 3rd party programs (backup or anitivirus, or something else)
+ can have file open with a sharing mode incompatible with renaming, i.e they
+ won't use FILE_SHARE_DELETE when opening file.
+
+ The following function will do a couple of retries, in case MoveFileEx returns
+ ERROR_SHARING_VIOLATION.
+*/
+static BOOL win_rename_with_retries(const char *from, const char *to)
+{
+ DBUG_INJECT_FILE_SHARING_VIOLATION(from);
+
+ for (int retry= FILE_SHARING_VIOLATION_RETRIES; retry--;)
+ {
+ BOOL ret= MoveFileEx(from, to,
+ MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING);
+
+ DBUG_CLEAR_FILE_SHARING_VIOLATION();
+
+ if (ret)
+ return ret;
+
+ DWORD last_error= GetLastError();
+
+ if (last_error == ERROR_SHARING_VIOLATION ||
+ last_error == ERROR_ACCESS_DENIED)
+ {
+ Sleep(FILE_SHARING_VIOLATION_DELAY_MS);
+ }
+ else
+ return ret;
+ }
+ return FALSE;
+}
+#endif
+
+ /* On unix rename deletes to file if it exists */
+int my_rename(const char *from, const char *to, myf MyFlags)
+{
+ int error = 0;
+ DBUG_ENTER("my_rename");
+ DBUG_PRINT("my",("from %s to %s MyFlags %lu", from, to, MyFlags));
+
+#if defined(_WIN32)
+ if (!win_rename_with_retries(from, to))
+ {
+ my_osmaperr(GetLastError());
+#elif defined(HAVE_RENAME)
+ if (rename(from,to))
+ {
+#else
+ if (link(from, to) || unlink(from))
+ {
+#endif
+ if (errno == ENOENT && !access(from, F_OK))
+ my_errno= ENOTDIR;
+ else
+ my_errno= errno;
+ error = -1;
+ if (MyFlags & (MY_FAE+MY_WME))
+ my_error(EE_LINK, MYF(ME_BELL),from,to,my_errno);
+ }
+ else if (MyFlags & MY_SYNC_DIR)
+ {
+#ifdef NEED_EXPLICIT_SYNC_DIR
+ /* do only the needed amount of syncs: */
+ char dir_from[FN_REFLEN], dir_to[FN_REFLEN];
+ size_t dir_from_length, dir_to_length;
+ dirname_part(dir_from, from, &dir_from_length);
+ dirname_part(dir_to, to, &dir_to_length);
+ if (my_sync_dir(dir_from, MyFlags) ||
+ (strcmp(dir_from, dir_to) &&
+ my_sync_dir(dir_to, MyFlags)))
+ error= -1;
+#endif
+ }
+ DBUG_RETURN(error);
+} /* my_rename */