caps_sys_getgen man page on DragonFly

caps_sys_getgen man page on DragonFly

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CAPS_SYS_GETGEN(2)	    BSD System Calls Manual	    CAPS_SYS_GETGEN(2)

NAME
     caps_sys_getgen — get the generation number for a CAPS IPC link

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/caps.h>

     caps_gen_t
     caps_sys_getgen(int portid);

DESCRIPTION
     The caps_sys_getgen() function returns the 64 bit generation number for a
     CAPS link specified by the portid identifier.  This number is typically
     used to allow a client to detect when a service has been restarted.

RETURN VALUES
     On success, the 64 bit generation number is returned.  If an error
     occurs, -1 is returned and errno is set.

ERRORS
     This function will fail if:

     [EINVAL]	 The portid could not be found.

     [ENOTCONN]	 The process originally creating the port forked and the child
		 process attempts to access the port.  The child process is
		 expected to create its own port.

SEE ALSO
     caps_sys_setgen(2)

HISTORY
     The caps_sys_getgen() function call first appeared in DragonFly 1.0.

AUTHORS
     CAPS IPC was written by Matthew Dillon.  This man page was written by
     Sascha Wildner.

BSD			       February 28, 2006			   BSD

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