1 kumpf 1.1.2.2 /*
 2               //%2006////////////////////////////////////////////////////////////////////////
 3               //
 4               // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
 5               // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
 6               // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
 7               // IBM Corp.; EMC Corporation, The Open Group.
 8               // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
 9               // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
10               // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
11               // EMC Corporation; VERITAS Software Corporation; The Open Group.
12               // Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
13               // EMC Corporation; Symantec Corporation; The Open Group.
14               //
15               // Permission is hereby granted, free of charge, to any person obtaining a copy
16               // of this software and associated documentation files (the "Software"), to
17               // deal in the Software without restriction, including without limitation the
18               // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
19               // sell copies of the Software, and to permit persons to whom the Software is
20               // furnished to do so, subject to the following conditions:
21               // 
22 kumpf 1.1.2.2 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
23               // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
24               // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
25               // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
26               // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
27               // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28               // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
29               // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30               //
31               //%/////////////////////////////////////////////////////////////////////////////
32               */
33               #include <stdlib.h>
34               #include <sys/types.h>
35               #include <sys/stat.h>
36               #include <fcntl.h>
37               #include <unistd.h>
38               #include <sys/time.h>
39               #include <sys/resource.h>
40               #include "FileHandle.h"
41               
42               /*
43 kumpf 1.1.2.2 **==============================================================================
44               **
45               ** RedirectTerminalIO()
46               **
47               **     Redirect stdin, stdout, and stderr to /dev/null.
48               **
49               **==============================================================================
50               */
51               
52               void RedirectTerminalIO(void)
53               {
54                   /* Close these file descriptors (stdin, stdout, stderr). */
55               
56                   close(0);
57                   close(1);
58                   close(2);
59               
60                   /* Direct standard input, output, and error to /dev/null: */
61               
62                   open("/dev/null", O_RDONLY);
63                   open("/dev/null", O_RDWR);
64 kumpf 1.1.2.2     open("/dev/null", O_RDWR);
65               }
66               
67               /*
68               **==============================================================================
69               **
70               ** CloseUnusedDescriptors()
71               **
72               **     Close all file descriptors except stdin, stdout, stderr, and the two
73               **     specified file descriptors.
74               **
75               **==============================================================================
76               */
77               
78               void CloseUnusedDescriptors(int fd1, int fd2)
79               {
80                   struct rlimit rlim;
81               
82                   if (getrlimit(RLIMIT_NOFILE, &rlim) == 0)
83                   {
84                       int i;
85 kumpf 1.1.2.2 
86                       for (i = 3; i < (int)rlim.rlim_cur; i++)
87                       {
88                           if (i != fd1 && i != fd2)
89                           {
90                               close(i);
91                           }
92                       }
93                   }
94               }