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Add an example on how to handle the incoming properties during module load.

This commit is contained in:
jmmv 2008-03-02 11:19:30 +00:00
parent 3fd8e29a11
commit c062e07376
1 changed files with 23 additions and 2 deletions
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25
sys/modules/example/example.c
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@ -1,4 +1,4 @@
/* $NetBSD: example.c,v 1.1 2008/01/16 12:34:57 ad Exp $ */
/* $NetBSD: example.c,v 1.2 2008/03/02 11:19:30 jmmv Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@ -34,7 +34,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: example.c,v 1.1 2008/01/16 12:34:57 ad Exp $");
__KERNEL_RCSID(0, "$NetBSD: example.c,v 1.2 2008/03/02 11:19:30 jmmv Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
@ -42,6 +42,26 @@ __KERNEL_RCSID(0, "$NetBSD: example.c,v 1.1 2008/01/16 12:34:57 ad Exp $");
MODULE(MODULE_CLASS_MISC, example, NULL);
static
void
handle_props(prop_dictionary_t props)
{
prop_string_t str;
str = prop_dictionary_get(props, "msg");
if (str == NULL)
printf("The 'msg' property was not given.\n");
else if (prop_object_type(str) != PROP_TYPE_STRING)
printf("The 'msg' property is not a string.\n");
else {
const char *msg = prop_string_cstring_nocopy(str);
if (msg == NULL)
printf("Failed to process the 'msg' property.\n");
else
printf("The 'msg' property is: %s\n", msg);
}
}
static int
example_modcmd(modcmd_t cmd, void *arg)
{
@ -49,6 +69,7 @@ example_modcmd(modcmd_t cmd, void *arg)
switch (cmd) {
case MODULE_CMD_INIT:
printf("Example module loaded.\n");
handle_props(arg);
break;
case MODULE_CMD_FINI: