Security-222.tar.gz

[apple/security.git] / cdsa / cdsa_utilities / daemon.cpp

diff --git a/cdsa/cdsa_utilities/daemon.cpp b/cdsa/cdsa_utilities/daemon.cpp
deleted file mode 100644 (file)
index c8e47fa..0000000
--- a/cdsa/cdsa_utilities/daemon.cpp
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
- * 
- * The contents of this file constitute Original Code as defined in and are
- * subject to the Apple Public Source License Version 1.2 (the 'License').
- * You may not use this file except in compliance with the License. Please obtain
- * a copy of the License at http://www.apple.com/publicsource and read it before
- * using this file.
- * 
- * This Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
- * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
- * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
- * specific language governing rights and limitations under the License.
- */
-
-
-//
-// demon - support code for writing UNIXoid demons
-//
-#include <Security/daemon.h>
-#include <Security/logging.h>
-#include <Security/debugging.h>
-#include <sys/types.h>
-#include <errno.h>
-#include <unistd.h>
-#include <fcntl.h>
-
-namespace Security {
-namespace Daemon {
-
-
-//
-// Daemonize this process, the UNIX way.
-//
-bool incarnate()
-{
-       // fork with slight resilience
-       for (int forkTries = 1; forkTries <= 5; forkTries++) {
-               switch (fork()) {
-               case 0:                 // child
-                       // we are the daemon process (Har! Har!)
-                       break;
-               case -1:                // parent: fork failed
-                       switch (errno) {
-                       case EAGAIN:
-                       case ENOMEM:
-                               Syslog::warning("fork() short on resources (errno=%d); retrying", errno);
-                               sleep(forkTries);
-                               continue;
-                       default:
-                               Syslog::error("fork() failed (errno=%d)", errno);
-                               return false;
-                       }
-               default:                // parent
-                       // @@@ we could close an assurance loop here, but we don't (yet?)
-                       exit(0);
-               }
-       }
-       
-       // fork succeeded; we are the child; parent is terminating
-
-       // create new session (the magic set-me-apart system call)
-       setsid();
-
-       // redirect standard channels to /dev/null
-       close(0);       // fail silently in case 0 is closed
-       if (open("/dev/null", O_RDWR, 0) == 0) {        // /dev/null could be missing, I suppose...
-               dup2(0, 1);
-               dup2(0, 2);
-       }
-       
-       // ready to roll
-       return true;
-}
-
-
-//
-// Re-execute myself.
-// This is a pretty bad hack for libraries that are pretty broken and (essentially)
-// don't work after a fork() unless you also exec().
-//
-// WARNING: Don't even THINK of doing this in a setuid-anything program.
-//
-bool executeSelf(char **argv)
-{
-       static const char reExecEnv[] = "_RE_EXECUTE";
-       if (getenv(reExecEnv)) {                // was re-executed
-               secdebug("daemon", "self-execution complete");
-               unsetenv(reExecEnv);
-               return true;
-       } else {
-               setenv(reExecEnv, "go", 1);
-               secdebug("daemon", "self-executing (ouch!)");
-               execv(argv[0], argv);
-               perror("re-execution");
-               Syslog::error("Re-execution attempt failed");
-               return false;
-       }
-}
-
-
-} // end namespace Daemon
-} // end namespace Security