solaris event

• App:

#include <libsysevent.h>
#include <sys/nvpair.h>


static int32_t attr_int32;


#define    CLASS1        EC_ALL
#define    CLASS2        "class2"
#define    SUBCLASS_1    "subclass_1"
#define    SUBCLASS_2    "subclass_2"
#define    SUBCLASS_3    "subclass_3"
#define    MAX_SUBCLASS  3


static void
event_handler(sysevent_t *ev)
{
    nvlist_t *nvlist;


    /*
     * Special processing  for events (CLASS1, SUBCLASS_1) and
     * (CLASS2, SUBCLASS_3)
     */  
/*
    if ((strcmp(CLASS1, sysevent_get_class_name(ev)) == 0 &&
        strcmp(SUBCLASS_1, sysevent_get_subclass_name(ev)) == 0) ||
        (strcmp(CLASS2, sysevent_get_subclass_name(ev) == 0) &&
        strcmp(SUBCLASS_3, sysevent_get_subclass(ev)) == 0)) {
        if (sysevent_get_attr_list(ev, &nvlist) != 0)
            return;
        if (nvlist_lookup_int32(nvlist, "my_int32_attr", &attr_int32)
            != 0)
            return;


    } else {
    }
*/
    printf("class name=%s, subclass name=%s\n",sysevent_get_class_name(ev),sysevent_get_subclass_name(ev));
}




int
main(int argc, char **argv)
{
    sysevent_handle_t *shp;
    const char *subclass_list[MAX_SUBCLASS];


    /* Bind event handler and create subscriber handle */
    shp = sysevent_bind_handle(event_handler);
    if (shp == NULL)
    {
printf("bind handle fail\n");
        exit(1);
    }


    /* Subscribe to all CLASS1 event notifications */
    subclass_list[0] = EC_SUB_ALL;
    if (sysevent_subscribe_event(shp, CLASS1, subclass_list, 1) != 0) {
        sysevent_unbind_handle(shp);
printf("subscribe event fail\n");
        exit(1);
    }


    /* Subscribe to CLASS2 events for subclasses: SUBCLASS_1,
     * SUBCLASS_2 and SUBCLASS_3
     */  
    subclass_list[0] = SUBCLASS_1;
    subclass_list[1] = SUBCLASS_2;
    subclass_list[2] = SUBCLASS_3;
    if (sysevent_subscribe_event(shp, CLASS2, subclass_list,
        MAX_SUBCLASS) != 0) {
        sysevent_unbind_handle(shp);
printf("subscribe event fail 1\n");
        exit(1);
    }
 
    for (;;) {
        (void) pause();
    }
}

编译程序：

cc -o event event.c -lsysevent

./event

• 在驱动程序中：

if (ddi_log_sysevent(lsp ->dip, DDI_VENDOR_SUNW, "eric", "eric",
        NULL, NULL, DDI_SLEEP) != DDI_SUCCESS) {
        cmn_err(CE_WARN, "error logging system event\n");
    }

在驱动中执行ddi_log_sysevent时，app可以接收到驱动发的消息，带参数的方式参考http://docs.oracle.com/cd/E19082-01/819-2256/ddi-log-sysevent-9f/index.html，参数需要进一步实验。