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/* $Revision: 1.5 $
**
*/
#include <stdio.h>
#include <sys/types.h>
#include "configdata.h"
#include "clibrary.h"
#include <sys/uio.h>
#include <errno.h>
/*
** Do a writev, return -1 on error; 0 if okay. Handling the return value
** of writev is a pain. It should return the number of iov's it fully
** wrote out, and update the fields in all of them to contain the new
** startpoints.
*/
int
xwritev(fd, vp, vpcount)
int fd;
struct iovec *vp;
register int vpcount;
{
register int i;
register long left;
/* Get the total bytecount. */
for (left = 0, i = vpcount; --i >= 0; )
left += vp[i].iov_len;
while (vpcount) {
if ((i = writev(fd, vp, vpcount)) < 0)
return -1;
if ((left -= i) <= 0)
break;
for (; i >= vp->iov_len; vp++, vpcount--)
i -= vp->iov_len;
vp->iov_base = ((char *) vp->iov_base) + i;
vp->iov_len -= i;
}
return 0;
}
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