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qmail/timeoutwrite.c
D. J. Bernstein d15ee51c9d qmail 1.02
2016-01-17 17:37:05 +01:00

22 lines
437 B
C

#include "timeoutwrite.h"
#include "select.h"
#include "error.h"
#include "readwrite.h"
int timeoutwrite(t,fd,buf,len) int t; int fd; char *buf; int len;
{
fd_set wfds;
struct timeval tv;
tv.tv_sec = t;
tv.tv_usec = 0;
FD_ZERO(&wfds);
FD_SET(fd,&wfds);
if (select(fd + 1,(fd_set *) 0,&wfds,(fd_set *) 0,&tv) == -1) return -1;
if (FD_ISSET(fd,&wfds)) return write(fd,buf,len);
errno = error_timeout;
return -1;
}