#include <sys/types.h>
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pid_t | daemon_fork (void) |
Does a daemonizing fork(). | |
int | daemon_retval_init (void) |
Initializes the library for allowing the passing of a return value from the daemon initialization to the parent process. | |
void | daemon_retval_done (void) |
Frees the resources allocated by daemon_retval_init(). | |
int | daemon_retval_wait (int timeout) |
Wait the specified amount of seconds for the response of the daemon process and return the integer passed to daemon_retval_send() in the daemon process. | |
int | daemon_retval_send (int s) |
Send the specified integer to the parent process. |
You may daemonize by calling daemon_fork(), a function similar to the plain fork(). If you want to return a return value of the initialization procedure of the child from the parent, you may use the daemon_retval_xxx() functions.
Definition in file dfork.h.
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Does a daemonizing fork(). For the new daemon process STDIN, STDOUT, STDERR are connected to /dev/null, the process is a session leader, the current directory is changed to /, the umask is set to 777.
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Frees the resources allocated by daemon_retval_init(). This should be called if neither daemon_retval_wait() nor daemon_retval_send() is used. If a fork took place, the function should be called in both the parent and the daemon.
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Initializes the library for allowing the passing of a return value from the daemon initialization to the parent process. Call this before calling any of the other daemon_retval_xxx() functions in the parent, before forking.
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Send the specified integer to the parent process. Should be called just once from the daemon process only. A subsequent call to daemon_retval_done() in the daemon is ignored.
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Wait the specified amount of seconds for the response of the daemon process and return the integer passed to daemon_retval_send() in the daemon process. Should be called just once from the parent process only. A subsequent call to daemon_retval_done() in the parent is ignored.
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