Imported Upstream version 1.4.5

config_test/Makefile

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+
+all: child_test
+
+child_test: child_test.c
+	gcc -o child_test child_test.c
+
+test:
+	./run_tests 10 100 > /dev/null
+
+clean:
+	rm -f child_test
+

config_test/child_test.c

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+// Base code taken from http://www-h.eng.cam.ac.uk/help/tpl/unix/fork.html
+// Fix for redhat suggested by Ptere Pramberger, peter@pramberger.at
+#include <unistd.h>
+#include <sys/wait.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <signal.h>
+void popen_sigchld_handler (int);
+int childtermd;
+
+int main(){
+ char str[1024];
+ int pipefd[2];
+ pid_t pid;
+ int status, died;
+
+        if (signal (SIGCHLD, popen_sigchld_handler) == SIG_ERR) {
+                printf ("Cannot catch SIGCHLD\n");
+		_exit(-1);
+        }
+
+  pipe (pipefd);
+  switch(pid=fork()){
+   case -1: 
+	    printf("can't fork\n");
+            _exit(-1);
+   
+   case 0 : // this is the code the child runs 
+            close(1);      // close stdout
+            // pipefd[1] is for writing to the pipe. We want the output
+            // that used to go to the standard output (file descriptor 1)
+            // to be written to the pipe. The following command does this,
+            // creating a new file descripter 1 (the lowest available) 
+            // that writes where pipefd[1] goes.
+            dup (pipefd[1]); // points pipefd at file descriptor
+            // the child isn't going to read from the pipe, so
+            // pipefd[0] can be closed
+            close (pipefd[0]);
+
+	    //These are the commands to run, with success commented. dig and nslookup only problems
+            //execl ("/bin/date","date",0);			// 100%
+	    //execl ("/bin/cat", "cat", "/etc/hosts", 0); 	// 100%
+	    //execl ("/usr/bin/dig", "dig", "redhat.com", 0);	// 69%
+	    //execl("/bin/sleep", "sleep", "1", 0);		// 100%
+            execl ("/usr/bin/nslookup","nslookup","redhat.com",0); // 90% (after 100 tests), 40% (after 10 tests)
+            //execl ("/bin/ping","ping","-c","1","localhost",0);	// 100%
+            //execl ("/bin/ping","ping","-c","1","192.168.10.32",0);	// 100%
+	    _exit(0);
+
+   default: // this is the code the parent runs 
+
+            close(0); // close stdin
+            // Set file descriptor 0 (stdin) to read from the pipe
+            dup (pipefd[0]);
+            // the parent isn't going to write to the pipe
+            close (pipefd[1]);
+            // Now read from the pipe
+            fgets(str, 1023, stdin);
+            //printf("1st line output is %s\n", str);
+
+	    //while (!childtermd);  // Uncomment this line to fix
+
+            died= wait(&status);
+	    //printf("died=%d status=%d\n", died, status);
+	    if (died > 0) _exit(0);
+	    else          _exit(1);
+   }
+}
+
+void
+popen_sigchld_handler (int signo)
+{
+        if (signo == SIGCHLD) {
+                //printf("Caught sigchld\n");
+                childtermd = 1;
+        }
+}

config_test/run_tests

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+#!/bin/ksh
+# $1 is the number of iterations to run
+# If $2 is specified, this is the number of times you run each iteration
+# If there is a fail at run, exit 1
+# Prints to stdout # of successes and passes
+# Prints to stderr a dot for each run
+
+total_runs=$2
+[[ -z $total_runs ]] && total_runs=1
+run=1
+while [[ $run -le $total_runs ]] ; do
+	i=0
+	success=0
+	fail=0
+	while [[ $i -lt $1 ]] ; do
+		./child_test
+		if [[ $? -eq 0 ]] ; then
+			success=$(($success+1))
+		else
+			fail=$((fail+1))
+		fi
+		i=$(($i+1))
+	done
+	print "Success=$success Fail=$fail"
+	[[ $fail -gt 0 ]] && exit 1
+	run=$(($run+1))
+	[[ $total_runs -gt 1 ]] && print -u2 -n "."
+done
+[[ $total_runs -gt 1 ]] && print -u2 
+exit 0