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workaround for NetBSD - close FDs before dup2().

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This commit is contained in:
Michael Graff 2000-06-28 16:26:40 +00:00
parent 4e21e54a03
commit 15197aefa1
1 changed files with 10 additions and 1 deletions
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11
bin/named/unix/os.c
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@ -15,7 +15,7 @@
* SOFTWARE.
*/
/* $Id: os.c,v 1.18 2000/06/22 21:49:57 tale Exp $ */
/* $Id: os.c,v 1.19 2000/06/28 16:26:40 explorer Exp $ */
#include <config.h>
@ -215,11 +215,20 @@ ns_os_daemonize(void) {
/*
* Try to set stdin, stdout, and stderr to /dev/null, but press
* on even if it fails.
*
* XXXMLG The close() calls here are unneeded on all but NetBSD, but
* are harmless to include everywhere. dup2() is supposed to close
* the FD if it is in use, but unproven-pthreads-0.16 is broken
* and will end up closing the wrong FD. This will be fixed eventually,
* and these calls will be removed.
*/
fd = open("/dev/null", O_RDWR, 0);
if (fd != -1) {
close(STDIN_FILENO);
(void)dup2(fd, STDIN_FILENO);
close(STDOUT_FILENO);
(void)dup2(fd, STDOUT_FILENO);
close(STDERR_FILENO);
(void)dup2(fd, STDERR_FILENO);
if (fd != STDIN_FILENO &&
fd != STDOUT_FILENO &&