added sigchld handling

+Sean 'Shaleh' Perry <shaleh@debian.org>  Tue,  5 Oct 1999 17:46:31 -0700
+	
+	* added pop3d/signal.c -- contains pop3_sigchld() currently
+
 Sean 'Shaleh' Perry <shaleh@debian.org>  Mon,  4 Oct 1999 17:57:17 -0700
 
 	* initial fork() rewrite, not even compiled it yet

@@ -5,11 +5,11 @@ sbin_PROGRAMS = pop3d
 pop3d_DEPENDENDENCIES = ../libmailbox/libmailbox.la ../libsrc/libgetopt.la\
 	../libsrc/libmd5.la
 pop3d_SOURCES = apop.c auth.c capa.c dele.c extra.c pop3d.c pop3d.h\
-	list.c noop.c quit.c retr.c rset.c stat.c top.c uidl.c user.c
+	list.c noop.c quit.c retr.c rset.c stat.c top.c uidl.c user.c signal.c
 
 #if USE_LIBPAM
 #pop3d_LDADD = ../libmailbox/libmailbox.la -lpam -ldl
 #else
 #pop3d_LDADD = ../libmailbox/libmailbox.la
 #endif
-pop3d_LADADD = ../libmailbox/libmailbox.la $(AUTHLIBS)
\ No newline at end of file
+pop3d_LADADD = ../libmailbox/libmailbox.la $(AUTHLIBS)

@@ -145,10 +145,7 @@ pop3_usage (char *argv0)
 void
 pop3_signal (int signal)
 {
-  if (signal == SIGCHLD)
-    --children;
-  else
-    pop3_abquit (ERR_SIGNAL);
+  pop3_abquit (ERR_SIGNAL);
 }
 
 /* Gets a line of input from the client */

@@ -18,8 +18,9 @@
 #include "pop3d.h"
 
 typedef struct sockaddr_in SA;
+
+/* count of number of child processes */
 unsigned int children = 0;
-#define strorepid(foo) /* will add more code here later */
 
 static struct option long_options[] =
 {
@@ -165,7 +166,7 @@ pop3_daemon_init (void)
   for (i = 0; i < MAXFD; ++i)
       close(i);
 
-  signal (SIGCHLD, pop3_signal);	/* for forking */
+  signal (SIGCHLD, pop3_sigchld);
 }
 
 /* The main part of the daemon. This function reads input from the client and
@@ -336,11 +337,11 @@ pop3_daemon (unsigned int maxchildren)
       else if(pid == 0) /* child */
         {
           close(listenfd);
+		  /* syslog(); FIXME log the info on the connectiing client */
           pop3_mainloop(connfd, connfd);
         }
       else
         {
-          storepid(pid);
           ++children;
         }
 

@@ -168,6 +168,7 @@ int pop3_mainloop (int infile, int outfile);
 int pop3_daemon (int maxchildren);
 void pop3_usage (char *argv0);
 void pop3_signal (int signal);
+void pop3_sigchld (int signal);
 void pop3_daemon_init (void);
 #ifdef _USE_APOP
 char *pop3_apopuser (const char *user);

+/* GNU copyright notice */
+
+#include "pop3d.h"
+
+void
+pop3_sigchld (int signal)
+{
+  pid_t pid;
+  int stat;
+
+  while ( (pid = waitpid(-1, &stat, WNOHANG)) > 0)
+      --children;
+  return;
+}