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add daemonize function to helper library

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This commit is contained in:
Duncan Laurie 2005-04-20 22:40:53 +00:00
parent 762f6fff1c
commit c7c5b2de37
2 changed files with 64 additions and 0 deletions
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1
ipmitool/include/ipmitool/helper.h
View File

@ -54,6 +54,7 @@ const char * buf2str(uint8_t * buf, int len);
void printbuf(const uint8_t * buf, int len, const char * desc); void printbuf(const uint8_t * buf, int len, const char * desc);
uint8_t ipmi_csum(uint8_t * d, int s); uint8_t ipmi_csum(uint8_t * d, int s);
FILE * ipmi_open_file(const char * file, int rw); FILE * ipmi_open_file(const char * file, int rw);
void ipmi_start_daemon(void);
#define ipmi_open_file_read(file) ipmi_open_file(file, 0) #define ipmi_open_file_read(file) ipmi_open_file(file, 0)
#define ipmi_open_file_write(file) ipmi_open_file(file, 1) #define ipmi_open_file_write(file) ipmi_open_file(file, 1)

63
ipmitool/lib/helper.c
View File

@ -228,3 +228,66 @@ ipmi_open_file(const char * file, int rw)
return fp; return fp;
} }
void
ipmi_start_daemon(void)
{
pid_t pid;
int fd;
#ifdef SIGHUP
sigset_t sighup;
#endif
/* if we are started from init no need to become daemon */
if (getppid() == 1)
return;
#ifdef SIGHUP
sigemptyset(&sighup);
sigaddset(&sighup, SIGHUP);
if (sigprocmask(SIG_UNBLOCK, &sighup, NULL) < 0)
fprintf(stderr, "ERROR: could not unblock SIGHUP signal\n");
signal(SIGHUP, SIG_IGN);
#endif
#ifdef SIGTTOU
signal(SIGTTOU, SIG_IGN);
#endif
#ifdef SIGTTIN
signal(SIGTTIN, SIG_IGN);
#endif
#ifdef SIGQUIT
signal(SIGQUIT, SIG_IGN);
#endif
#ifdef SIGTSTP
signal(SIGTSTP, SIG_IGN);
#endif
pid = (pid_t) fork();
if (pid < 0 || pid > 0)
exit(0);
#if defined(SIGTSTP) && defined(TIOCNOTTY)
if (setpgid(0, getpid()) == -1)
exit(1);
if ((fd = open(_PATH_TTY, O_RDWR)) >= 0) {
ioctl(fd, TIOCNOTTY, NULL);
close(fd);
}
#else
if (setpgrp() == -1)
exit(1);
pid = (pid_t) fork();
if (pid < 0 || pid > 0)
exit(0);
#endif
chdir("/");
umask(0);
for (fd=0; fd<64; fd++)
close(fd);
open("/dev/null", O_RDWR);
dup(0);
dup(0);
}