87 lines
1.4 KiB
C
87 lines
1.4 KiB
C
#ifndef LINT
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static const char rcsid[] = "$Id: writev.c,v 1.1.1.1 2001/05/17 22:48:46 itojun Exp $";
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#endif
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#include "port_before.h"
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include "port_after.h"
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#ifndef NEED_WRITEV
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int __bindcompat_writev;
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#else
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#ifdef _CRAY
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#define OWN_WRITEV
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int
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__writev(int fd, struct iovec *iov, int iovlen)
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{
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struct stat statbuf;
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if (fstat(fd, &statbuf) < 0)
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return (-1);
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/*
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* Allow for atomic writes to network.
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*/
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if (statbuf.st_mode & S_IFSOCK) {
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struct msghdr mesg;
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mesg.msg_name = 0;
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mesg.msg_namelen = 0;
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mesg.msg_iov = iov;
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mesg.msg_iovlen = iovlen;
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mesg.msg_accrights = 0;
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mesg.msg_accrightslen = 0;
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return (sendmsg(fd, &mesg, 0));
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} else {
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struct iovec *tv;
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int i, rcode = 0, count = 0;
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for (i = 0, tv = iov; i <= iovlen; tv++) {
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rcode = write(fd, tv->iov_base, tv->iov_len);
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if (rcode < 0)
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break;
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count += rcode;
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}
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if (count == 0)
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return (rcode);
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else
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return (count);
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}
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}
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#else /*_CRAY*/
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int
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__writev(fd, vp, vpcount)
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int fd;
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const struct iovec *vp;
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int vpcount;
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{
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int count = 0;
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while (vpcount-- > 0) {
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int written = write(fd, vp->iov_base, vp->iov_len);
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if (written < 0)
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return (-1);
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count += written;
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if (written != vp->iov_len)
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break;
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vp++;
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}
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return (count);
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}
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#endif /*_CRAY*/
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#endif /*NEED_WRITEV*/
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