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Code Issues Releases Wiki Activity

add ns_os_deamonize()

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This commit is contained in:
Bob Halley
2000-01-26 21:12:33 +00:00
parent 6bfaefc3fd
commit 2aa67e804d
2 changed files with 36 additions and 0 deletions
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3
bin/named/unix/include/named/os.h
View File

@@ -23,6 +23,9 @@
isc_result_t isc_result_t
ns_os_init(void); ns_os_init(void);
isc_result_t
ns_os_daemonize(void);
void void
ns_os_shutdown(void); ns_os_shutdown(void);

33
bin/named/unix/os.c
View File

@@ -25,6 +25,7 @@
#include <unistd.h> #include <unistd.h>
#include <errno.h> #include <errno.h>
#include <syslog.h> #include <syslog.h>
#include <fcntl.h>
#include <isc/result.h> #include <isc/result.h>
@@ -92,6 +93,38 @@ ns_os_init(void) {
return (ISC_R_SUCCESS); return (ISC_R_SUCCESS);
} }
isc_result_t
ns_os_daemonize(void) {
pid_t pid;
int fd;
pid = fork();
if (pid == -1)
return (ISC_R_FAILURE);
if (pid != 0)
_exit(0);
/*
* We're the child.
*/
if (setsid() == -1)
return (ISC_R_FAILURE);
/*
* Try to set stdin, stdout, and stderr to /dev/null, but press
* on even if it fails.
*/
fd = open("/dev/null", O_RDWR, 0);
if (fd != -1) {
(void)dup2(fd, STDIN_FILENO);
(void)dup2(fd, STDOUT_FILENO);
(void)dup2(fd, STDERR_FILENO);
}
return (ISC_R_SUCCESS);
}
void void
ns_os_shutdown(void) { ns_os_shutdown(void) {
closelog(); closelog();