PICLD_PLUGIN_REGISTER(3PICLTREE) PICL Plug-In Library Functions


NAME


picld_plugin_register - register plug-in with the daemon

SYNOPSIS


cc [ flag... ] file... -lpicltree [ library... ]
#include <picltree.h>

int picld_plugin_register(picld_plugin_reg_t *regp);


DESCRIPTION


The picld_plugin_register() function is the function used by a plug-in
module to register itself with the PICL daemon upon initialization. The
plug-in provides its name and the entry points of the initialization and
cleanup routines in the regp argument.

typedef struct {
int version; /* PICLD_PLUGIN_VERSION */
int critical; /* is plug-in critical? */
char *name; /* name of the plugin module */
void (*plugin_init)(void); /* init/reinit function */
void (*plugin_fini)(void); /* fini/cleanup function */
} picld_plugin_reg_t;


The plug-in module also specifies whether it is a critical module for the
proper system operation. The critical field in the registration
information is set to PICLD_PLUGIN_NON_CRITICAL by plug-in modules that
are not critical to system operation, and is set to PICLD_PLUGIN_CRITICAL
by plug-in modules that are critical to the system operation. An
environment control plug-in module is an example for a
PICLD_PLUGIN_CRITICAL type of plug-in module.


The PICL daemon saves the information passed during registration in regp
in the order in which the plug-ins registered.


Upon initialization, the PICL daemon invokes the plugin_init() routine of
each of the registered plug-in modules in the order in which they
registered. In their plugin_init() routines, the plug-in modules collect
the platform configuration data and add it to the PICL tree using
PICLTREE interfaces (3PICLTREE).


On reinitialization, the PICL daemon invokes the plugin_fini() routines
of the registered plug-in modules in the reverse order of registration.
Then, the plugin_init() entry points are invoked again in the order in
which the plug-ins registered.

RETURN VALUES


Upon successful completion, 0 is returned. On failure, a negative value
is returned.

ERRORS


PICL_NOTSUPPORTED
Version not supported


PICL_FAILURE
General system failure


ATTRIBUTES


See attributes(5) for descriptions of the following attributes:


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Evolving |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+

SEE ALSO


libpicltree(3PICLTREE), attributes(5)


September 19, 2001
PICLD_PLUGIN_REGISTER(3PICLTREE)