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65 lines
1.9 KiB
C
65 lines
1.9 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; either version 2 of the License, or
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(at your option) any later version.
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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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/* Seek to position in file */
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/*ARGSUSED*/
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my_off_t my_seek(File fd, my_off_t pos, int whence,
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myf MyFlags __attribute__((unused)))
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{
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reg1 os_off_t newpos;
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DBUG_ENTER("my_seek");
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DBUG_PRINT("my",("Fd: %d Hpos: %lu Pos: %lu Whence: %d MyFlags: %d",
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fd, (ulong) (((ulonglong) pos) >> 32), (ulong) pos,
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whence, MyFlags));
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DBUG_ASSERT(pos != MY_FILEPOS_ERROR); /* safety check */
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newpos=lseek(fd, pos, whence);
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if (newpos == (os_off_t) -1)
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{
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my_errno=errno;
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DBUG_PRINT("error",("lseek: %lu, errno: %d",newpos,errno));
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DBUG_RETURN(MY_FILEPOS_ERROR);
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}
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if ((my_off_t) newpos != pos)
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{
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DBUG_PRINT("exit",("pos: %lu", (ulong) newpos));
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}
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DBUG_RETURN((my_off_t) newpos);
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} /* my_seek */
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/* Tell current position of file */
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/* ARGSUSED */
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my_off_t my_tell(File fd, myf MyFlags __attribute__((unused)))
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{
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os_off_t pos;
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DBUG_ENTER("my_tell");
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DBUG_PRINT("my",("Fd: %d MyFlags: %d",fd, MyFlags));
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#ifdef HAVE_TELL
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pos=tell(fd);
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#else
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pos=lseek(fd, 0L, MY_SEEK_CUR);
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#endif
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if (pos == (os_off_t) -1)
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my_errno=errno;
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DBUG_PRINT("exit",("pos: %lu", (ulong) pos));
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DBUG_RETURN((my_off_t) pos);
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} /* my_tell */
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