diff options
Diffstat (limited to 'mysys/my_seek.c')
-rw-r--r-- | mysys/my_seek.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/mysys/my_seek.c b/mysys/my_seek.c new file mode 100644 index 00000000000..12f8ced0642 --- /dev/null +++ b/mysys/my_seek.c @@ -0,0 +1,57 @@ +/* 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 Pos: %lu Whence: %d MyFlags: %d", + fd, (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 */ |