jtkohl@athena.mit.edu (John T Kohl) (06/03/88)
Index: etc/inetd.c 4.3BSD
Description:
If inetd is waiting for a datagram-server to exit when it is
reconfigured via SIGHUP, it will lose the pid of the datagram
server and eventually becomes deaf to that service when the
server exits.
Repeat-By:
Set up inetd to listen on behalf of a long-lived udp-based
service. While the server is active, reconfigure inetd with
SIGHUP. Let the udp-based server exit. inetd will be deaf to
that service, and packets will accumulate on the listening
socket (use netstat -a to take a look).
Fix:
Install this patch: (your line numbers probably differ)
*** inetd.c.old Fri Jun 3 11:29:26 1988
--- inetd.c Fri Jun 3 11:28:56 1988
***************
*** 383,390 ****
int i;
omask = sigblock(SIGBLOCK);
! if (cp->se_bi == 0)
! sep->se_wait = cp->se_wait;
#define SWAP(a, b) { char *c = a; a = b; b = c; }
if (cp->se_user)
SWAP(sep->se_user, cp->se_user);
--- 383,401 ----
int i;
omask = sigblock(SIGBLOCK);
! if (cp->se_bi == 0) {
! /* sep->se_wait may be holding a
! process ID of a running daemon we are
! waiting for. If so, don't nuke it unless
! we are instructed now not to wait.
! sep->se_wait == 1 if we should wait and
! there is no process.
! == 0 if we don't wait
! == pid if we are currently waiting.
! */
! if ((sep->se_wait == 1) || (cp->se_wait == 0))
! sep->se_wait = cp->se_wait;
! }
#define SWAP(a, b) { char *c = a; a = b; b = c; }
if (cp->se_user)
SWAP(sep->se_user, cp->se_user);
----
John Kohl
MIT/Project Athena