--- libaitio/src/aio.c 2010/07/05 11:01:56 1.1.2.2 +++ libaitio/src/aio.c 2012/08/01 08:51:00 1.5.14.1 @@ -1,8 +1,54 @@ +/************************************************************************* +* (C) 2010 AITNET ltd - Sofia/Bulgaria - +* by Michael Pounov +* +* $Author: misho $ +* $Id: aio.c,v 1.5.14.1 2012/08/01 08:51:00 misho Exp $ +* +************************************************************************** +The ELWIX and AITNET software is distributed under the following +terms: + +All of the documentation and software included in the ELWIX and AITNET +Releases is copyrighted by ELWIX - Sofia/Bulgaria + +Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 + by Michael Pounov . All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. +3. All advertising materials mentioning features or use of this software + must display the following acknowledgement: +This product includes software developed by Michael Pounov +ELWIX - Embedded LightWeight unIX and its contributors. +4. Neither the name of AITNET nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +SUCH DAMAGE. +*/ #include "global.h" /* - * io_rread() Raw VFS read function + * io_rread() - Raw VFS read function + * * @fd = File handle * @buf = Read buffer * @nbytes = Read buffer size @@ -15,11 +61,12 @@ io_rread(int fd, void * __restrict buf, size_t nbytes, { int ret; #ifdef AIO_OPS + off_t old = 0; struct aiocb acb; #endif if (!buf) { - io_SetErr(EINVAL, "Error:: invalid arguments ...\n"); + io_SetErr(EINVAL, "Invalid arguments"); return -1; } if (!nbytes) @@ -34,8 +81,14 @@ io_rread(int fd, void * __restrict buf, size_t nbytes, #ifdef AIO_OPS /* This made for generate EOF for file */ - if (update && offset >= lseek(fd, 0, SEEK_END)) + if (!update && (old = lseek(fd, 0, SEEK_CUR)) == -1) { + LOGERR; + return -1; + } + if (offset >= lseek(fd, 0, SEEK_END)) return 0; + if (!update) + lseek(fd, old, SEEK_SET); memset(buf, 0, nbytes); memset(&acb, 0, sizeof acb); @@ -54,8 +107,8 @@ io_rread(int fd, void * __restrict buf, size_t nbytes, if (ret == -1) { LOGERR; return -1; - } else - ret = acb.aio_nbytes; + } /*else + ret = acb.aio_nbytes;*/ #else ret = pread(fd, buf, nbytes, offset); if (ret == -1) { @@ -71,7 +124,8 @@ io_rread(int fd, void * __restrict buf, size_t nbytes, } /* - * io_rwrite() Raw VFS write function + * io_rwrite() - Raw VFS write function + * * @fd = File handle * @buf = Write buffer * @nbytes = Write bytes from buffer @@ -88,7 +142,7 @@ io_rwrite(int fd, void * __restrict buf, size_t nbytes #endif if (!buf) { - io_SetErr(EINVAL, "Error:: invalid arguments ...\n"); + io_SetErr(EINVAL, "Invalid arguments"); return -1; } if (!nbytes) @@ -118,8 +172,8 @@ io_rwrite(int fd, void * __restrict buf, size_t nbytes if (ret == -1) { LOGERR; return -1; - } else - ret = acb.aio_nbytes; + } /*else + ret = acb.aio_nbytes;*/ #else ret = pwrite(fd, buf, nbytes, offset); if (ret == -1) {