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/* Copyright (C) 2000 MySQL AB
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; either version 2 of the License, or
(at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "mysys_priv.h"
#include "mysys_err.h"
/* Read a chunk of bytes from a file */
uint32 my_lread(int Filedes, byte *Buffer, uint32 Count, myf MyFlags)
/* File descriptor */
/* Buffer must be at least count bytes */
/* Max number of bytes returnd */
/* Flags on what to do on error */
{
uint32 readbytes;
DBUG_ENTER("my_lread");
DBUG_PRINT("my",("Fd: %d Buffer: %ld Count: %ld MyFlags: %d",
Filedes, Buffer, Count, MyFlags));
/* Temp hack to get count to int32 while read wants int */
if ((readbytes = (uint32) read(Filedes, Buffer, (uint) Count)) != Count)
{
my_errno=errno;
if (MyFlags & (MY_WME | MY_FAE | MY_FNABP))
{
if (readbytes == MY_FILE_ERROR)
my_error(EE_READ, MYF(ME_BELL+ME_WAITTANG),
my_filename(Filedes),errno);
else
if (MyFlags & (MY_NABP | MY_FNABP))
my_error(EE_EOFERR, MYF(ME_BELL+ME_WAITTANG),
my_filename(Filedes),errno);
}
if (readbytes == MY_FILE_ERROR || MyFlags & (MY_NABP | MY_FNABP))
DBUG_RETURN((uint32) -1); /* Return med felkod */
}
if (MyFlags & (MY_NABP | MY_FNABP))
DBUG_RETURN(0); /* Ok vid l{sning */
DBUG_RETURN(readbytes);
} /* my_lread */
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