The R13B03 release.OTP_R13B03

1 files changed, 110 insertions, 0 deletions

diff --git a/erts/test/erlexec_SUITE_data/erlexec_tests.c b/erts/test/erlexec_SUITE_data/erlexec_tests.c
new file mode 100644
index 0000000000..a49a0b21a8
--- /dev/null
+++ b/erts/test/erlexec_SUITE_data/erlexec_tests.c
@@ -0,0 +1,110 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 2008-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ */
+/* Used by test case otp_7461 to spawn a child process with a given
+ * command line. Child process group is killed by order received on stdin.
+ *
+ * Author: Sverker Eriksson
+ */
+
+#if defined (__WIN32__) || defined(VXWORKS) || defined(_OSE_)
+int main() {return 0;}
+
+#else /* UNIX only */
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define TRY(cmd) if ((cmd) < 0) bail_out(#cmd " failed")
+
+static void bail_out(const char* msg)
+{
+  perror(msg);
+  exit(-1);
+}
+
+static void alarm_handler(int signo)
+{
+  fprintf(stderr, __FILE__" self terminating after timeout\n");
+  exit(1);
+}
+
+int main(int argc, char* argv[])
+{
+  pid_t child;
+  int ret; 
+  char cmd;
+  int child_exit;
+
+  if (argc < 2) {
+    fprintf(stderr, "Must specify command to run in background\n");
+    exit(-1);
+  }
+  TRY(child=fork());
+
+  if (child == 0) { /* child */
+    pid_t gchild;
+    TRY(setpgid(getpid(), getpid())); /* create process group */
+    
+    TRY(gchild=fork());
+    if (gchild == 0) { /* grandchild */
+      TRY(execvp(argv[1],&argv[1]));      
+    }
+    exit(0);
+  }
+  /* parent */    
+
+  signal(SIGALRM, alarm_handler);
+  alarm(10*60); /* suicide in case nothing happens */
+
+  TRY(wait(&child_exit));
+  if (!WIFEXITED(child_exit) || WEXITSTATUS(child_exit)!=0) {
+    fprintf(stderr, "child did not exit normally (status=%d)\n", child_exit);
+    exit(-1);
+  }
+
+  for (;;)
+    {
+      TRY(ret=read(STDIN_FILENO, &cmd, 1));
+      if (ret == 0) break; /* eof -> exit */
+      switch (cmd)
+	{
+	case 'K':
+	  ret = kill(-child, SIGINT); /* child process _group_ */
+	  if (ret < 0 && errno != ESRCH) {
+	    bail_out("kill failed");
+	  }
+ 	  write(STDOUT_FILENO, &cmd, 1); /* echo ack */
+ 	  break;
+ 	case '\n':
+ 	  break;/* ignore (for interactive testing) */
+ 	default:
+ 	  fprintf(stderr, "Unknown command '%c'\n", cmd);
+	  exit(-1);
+ 	}
+     }  
+
+  return 0;
+}
+
+#endif /* UNIX */