cleanup

[openldap] / libraries / liblutil / detach.c

diff --git a/libraries/liblutil/detach.c b/libraries/liblutil/detach.c
index c4f2aa4478eb6db60d4ec83cb3c0b0b6fa85aa41..022c2dbd787e825e58a2de47ba124e095ec0233e 100644 (file)
--- a/libraries/liblutil/detach.c
+++ b/libraries/liblutil/detach.c
@@ -72,21 +72,37 @@ lutil_detach( int debug, int do_close )
                        break;
                }
 
-               if ( do_close )
-                       for ( i = 3; i < nbits; i++ )
-                               close( i );
-
-               (void) chdir( "/" );
-
                if ( (sd = open( "/dev/null", O_RDWR )) == -1 ) {
-                       perror( "/dev/null" );
-                       exit( EXIT_FAILURE );
+                       perror("/dev/null");
                }
-               for ( i = 0;  i < 3;  i++ )
-                       if ( sd != i && isatty( i ) )
-                               (void) dup2( sd, i );
-               if ( sd > 2 )
-                       close( sd );
+
+               /* close stdin, stdout, stderr */
+               close( STDIN_FILENO );
+               close( STDOUT_FILENO );
+               close( STDERR_FILENO );
+
+               /* redirect stdin, stdout, stderr to /dev/null */
+               dup2( sd, STDIN_FILENO );
+               dup2( sd, STDOUT_FILENO );
+               dup2( sd, STDERR_FILENO );
+
+               close( sd );
+
+               if ( do_close ) {
+                       /* close everything else */
+                       for ( i = 0; i < nbits; i++ ) {
+                               if( i != STDIN_FILENO &&
+                                       i != STDOUT_FILENO && 
+                                       i != STDERR_FILENO )
+                               {
+                                       close( i );
+                               }
+                       }
+               }
+
+#ifdef CHDIR_TO_ROOT
+               (void) chdir( "/" );
+#endif
 
 #ifdef HAVE_SETSID
                (void) setsid();