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85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/* Copyright (C) 2000 MySQL AB
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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 as published by
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the Free Software Foundation; version 2 of the License.
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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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#include "mysys_priv.h"
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#include "mysys_err.h"
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int my_delete(const char *name, myf MyFlags)
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{
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int err;
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DBUG_ENTER("my_delete");
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DBUG_PRINT("my",("name %s MyFlags %d", name, MyFlags));
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if ((err = unlink(name)) == -1)
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{
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my_errno=errno;
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if (MyFlags & (MY_FAE+MY_WME))
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my_error(EE_DELETE,MYF(ME_BELL+ME_WAITTANG+(MyFlags & ME_NOINPUT)),
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name,errno);
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}
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DBUG_RETURN(err);
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} /* my_delete */
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#if defined(__WIN__) && defined(__NT__)
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/*
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Delete file which is possibly not closed.
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This function is intended to be used exclusively as a temporal solution
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for Win NT in case when it is needed to delete a not closed file (note
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that the file must be opened everywhere with FILE_SHARE_DELETE mode).
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Deleting not-closed files can not be supported on Win 98|ME (and because
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of that is considered harmful).
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The function deletes the file with its preliminary renaming. This is
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because when not-closed share-delete file is deleted it still lives on
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a disk until it will not be closed everwhere. This may conflict with an
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attempt to create a new file with the same name. The deleted file is
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renamed to <name>.<num>.deleted where <name> - the initial name of the
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file, <num> - a hexadecimal number chosen to make the temporal name to
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be unique.
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*/
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int nt_share_delete(const char *name, myf MyFlags)
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{
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char buf[MAX_PATH + 20];
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ulong cnt;
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DBUG_ENTER("nt_share_delete");
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DBUG_PRINT("my",("name %s MyFlags %d", name, MyFlags));
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for (cnt= GetTickCount(); cnt; cnt--)
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{
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sprintf(buf, "%s.%08X.deleted", name, cnt);
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if (MoveFile(name, buf))
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break;
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if ((errno= GetLastError()) == ERROR_ALREADY_EXISTS)
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continue;
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DBUG_PRINT("warning", ("Failed to rename %s to %s, errno: %d",
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name, buf, errno));
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break;
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}
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if (DeleteFile(buf))
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DBUG_RETURN(0);
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my_errno= GetLastError();
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if (MyFlags & (MY_FAE+MY_WME))
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my_error(EE_DELETE, MYF(ME_BELL + ME_WAITTANG + (MyFlags & ME_NOINPUT)),
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name, my_errno);
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DBUG_RETURN(-1);
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}
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#endif
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