mdw@git.distorted.org.uk Git - qmail/blob - timeoutread.c

   1 #include "timeoutread.h"
   2 #include "select.h"
   3 #include "error.h"
   4 #include "readwrite.h"
   5
   6 int timeoutread(fdt,buf,len) int fdt; char *buf; int len;
   7 {
   8   fd_set rfds;
   9   struct timeval tv;
  10   int fd;
  11
  12   tv.tv_sec = (fdt >> 10);
  13   tv.tv_usec = 0;
  14
  15   fd = (fdt & 1023);
  16   FD_ZERO(&rfds);
  17   FD_SET(fd,&rfds);
  18
  19   if (select(fd + 1,&rfds,(fd_set *) 0,(fd_set *) 0,&tv) == -1) return -1;
  20   if (FD_ISSET(fd,&rfds)) return read(fd,buf,len);
  21
  22   shutdown(fd,0);
  23   errno = error_timeout;
  24   return -1;
  25 }