d7ce700605
Add Posix functions for porting compatibility. Fix compliance issues with ISO/IEC 9899:199409 New Functions: setenv(), fparseln(), GetFileNameFromPath(), rename(), realpath(), setprogname(), getprogname(), strlcat(), strlcpy(), strsep(), setitimer(), getitimer(), timegm(), getopt(), basename(), mkstemp(), ffs(), vsnprintf(), snprintf(), getpass(), usleep(), select(), writev(), strcasecmp(), getcwd(), chdir(), tcgetpgrp(), getpgrp(), gettimeofday(), bcopy(), git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12061 6f19259b-4bc3-4df7-8a09-765794883524
144 lines
3.5 KiB
C
144 lines
3.5 KiB
C
/*
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* Copyright (c) 1999, 2000
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* Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. All advertising materials mentioning features or use of this software must
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* display the following acknowledgement:
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*
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* This product includes software developed by Intel Corporation and its
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* contributors.
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*
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* 4. Neither the name of Intel Corporation or its contributors may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*++
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Module Name:
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writev.c
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Abstract:
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Functions implementing the standard "writev" system call interface
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Revision History
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--*/
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#include <LibConfig.h>
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#ifdef foo
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#include <efi_interface.h>
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#include <unistd.h>
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#include <fcntl.h>
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#define KERNEL
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#include <errno.h>
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#undef KERNEL
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#include "./filedesc.h"
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#include <libc_debug.h>
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#include <assert.h>
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#endif
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/uio.h>
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#include <string.h>
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#ifndef KERNEL
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#define KERNEL
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#include <errno.h>
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#undef KERNEL
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#else
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#include <errno.h>
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#endif
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//
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// Name:
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// writev
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//
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// Description:
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// BSD writev interface for libc
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//
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// Arguments:
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// File Descriptor (index into file descriptor table)
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// iovec pointer
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// size of iovec array
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//
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// Returns:
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// number of bytes written
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//
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ssize_t
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writev(
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int fd,
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const struct iovec *iov,
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int iovcnt
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)
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{
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const struct iovec *pVecTmp;
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char *pBuf, *pBufTmp;
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size_t TotalBytes, i, ret;
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//
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// See how much memory we'll need
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//
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for (i = 0, TotalBytes = 0, pVecTmp = iov; i < (size_t)iovcnt; i++, pVecTmp++) {
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TotalBytes += pVecTmp->iov_len;
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}
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//
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// Allocate a contiguous buffer
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//
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pBuf = (char*)malloc (TotalBytes);
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if (pBuf == NULL) {
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errno = ENOMEM;
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return -1;
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}
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//
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// Copy vectors to the buffer
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//
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for (pBufTmp = pBuf; iovcnt; iovcnt--) {
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bcopy(iov->iov_base, pBuf, iov->iov_len);
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pBuf += iov->iov_len;
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iov++;
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}
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//
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// Use standard write(2) then free buffer
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//
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ret = write (fd, pBuf, TotalBytes);
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free (pBuf);
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return (ret);
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}
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