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daemon: Integrate checking for an existing pidfile into daemonize_start().

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Until now, it has been the responsibility of an individual daemon to call
die_if_already_running() at an appropriate time.  A long time ago, this
had to happen *before* daemonizing, because once the process daemonized
itself there was no way to report failure to the process that originally
started the daemon.  With the introduction of daemonize_start(), this is
now possible, but we haven't been taking advantage of it.

Therefore, this commit integrates the die_if_already_running() call into
daemonize_start() and deletes the calls to it from individual daemons.
This commit is contained in:
Ben Pfaff
2011-03-31 09:44:30 -07:00
parent af9a144207
commit 00c0858987
13 changed files with 13 additions and 26 deletions
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lib/daemon.h
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@@ -67,7 +67,6 @@ void daemon_set_monitor(void);
void daemonize(void);
void daemonize_start(void);
void daemonize_complete(void);
void die_if_already_running(void);
void ignore_existing_pidfile(void);
void daemon_usage(void);
pid_t read_pidfile(const char *name);