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my_seek.c
Package: mysql-3.23.35.tar.gz [view]
Upload User: tsgydb
Upload Date: 2007-04-14
Package Size: 10674k
Code Size: 2k
Category:
MySQL
Development Platform:
Visual C++
- /* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
- This library 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
- Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA */
- #include "mysys_priv.h"
- /* Seek to position in file */
- /*ARGSUSED*/
- my_off_t my_seek(File fd, my_off_t pos, int whence, myf MyFlags)
- {
- reg1 os_off_t newpos;
- DBUG_ENTER("my_seek");
- DBUG_PRINT("my",("Fd: %d Hpos: %lu Pos: %lu Whence: %d MyFlags: %d",
- fd, ((ulonglong) pos) >> 32, (ulong) pos, whence, MyFlags));
- newpos=lseek(fd, pos, whence);
- if (newpos == (os_off_t) -1)
- {
- my_errno=errno;
- DBUG_PRINT("error",("lseek: %lu, errno: %d",newpos,errno));
- DBUG_RETURN(MY_FILEPOS_ERROR);
- }
- DBUG_RETURN((my_off_t) newpos);
- } /* my_seek */
- /* Tell current position of file */
- /* ARGSUSED */
- my_off_t my_tell(File fd, myf MyFlags)
- {
- os_off_t pos;
- DBUG_ENTER("my_tell");
- DBUG_PRINT("my",("Fd: %d MyFlags: %d",fd, MyFlags));
- #ifdef HAVE_TELL
- pos=tell(fd);
- #else
- pos=lseek(fd, 0L, MY_SEEK_CUR);
- #endif
- if (pos == (os_off_t) -1)
- my_errno=errno;
- DBUG_PRINT("exit",("pos: %lu",pos));
- DBUG_RETURN((my_off_t) pos);
- } /* my_tell */