1 kumpf 1.1 /*

 2 martin 1.2 //%LICENSE////////////////////////////////////////////////////////////////

 3 kumpf  1.1 // 

 4 martin 1.2 // Licensed to The Open Group (TOG) under one or more contributor license
 5            // agreements.  Refer to the OpenPegasusNOTICE.txt file distributed with
 6            // this work for additional information regarding copyright ownership.
 7            // Each contributor licenses this file to you under the OpenPegasus Open
 8            // Source License; you may not use this file except in compliance with the
 9            // License.
10            // 
11            // Permission is hereby granted, free of charge, to any person obtaining a
12            // copy of this software and associated documentation files (the "Software"),
13            // to deal in the Software without restriction, including without limitation
14            // the rights to use, copy, modify, merge, publish, distribute, sublicense,
15            // and/or sell copies of the Software, and to permit persons to whom the
16            // Software is furnished to do so, subject to the following conditions:
17            // 
18            // The above copyright notice and this permission notice shall be included
19            // in all copies or substantial portions of the Software.
20            // 
21            // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22            // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
23            // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
24            // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
25 martin 1.2 // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
26            // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
27            // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28            // 
29            //////////////////////////////////////////////////////////////////////////

30 kumpf  1.1 */

31 martin 1.2 

32 kumpf  1.1 #include <stdlib.h>
33            #include <sys/types.h>
34            #include <sys/stat.h>
35            #include <fcntl.h>
36            #include <unistd.h>
37            #include <sys/time.h>
38            #include <sys/resource.h>
39            #include "FileHandle.h"
40            
41            /*
42            **==============================================================================
43            **
44            ** RedirectTerminalIO()
45            **
46            **     Redirect stdin, stdout, and stderr to /dev/null.
47            **
48            **==============================================================================
49            */
50            
51            void RedirectTerminalIO(void)
52            {
53 kumpf  1.1     /* Close these file descriptors (stdin, stdout, stderr). */
54            
55                close(0);
56                close(1);
57                close(2);
58            
59                /* Direct standard input, output, and error to /dev/null: */
60            
61                open("/dev/null", O_RDONLY);
62                open("/dev/null", O_RDWR);
63                open("/dev/null", O_RDWR);
64            }
65            
66            /*
67            **==============================================================================
68            **
69            ** CloseUnusedDescriptors()
70            **
71            **     Close all file descriptors except stdin, stdout, stderr, and the two
72            **     specified file descriptors.
73            **
74 kumpf  1.1 **==============================================================================
75            */
76            
77            void CloseUnusedDescriptors(int fd1, int fd2)
78            {
79                struct rlimit rlim;
80            
81                if (getrlimit(RLIMIT_NOFILE, &rlim) == 0)
82                {
83                    int i;
84            
85                    for (i = 3; i < (int)rlim.rlim_cur; i++)
86                    {
87                        if (i != fd1 && i != fd2)
88                        {
89                            close(i);
90                        }
91                    }
92                }
93            }