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| System Event Library Functions | sysevent_post_event(3SYSEVENT) |
| | sysevent_post_event - post system event for applications |
SYNOPSIS
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cc [flag ...] file ...-lsysevent -lnvpair [library ...]
#include <libsysevent.h>
#include <libnvpair.h> int sysevent_post_event(char *class, char *subclass, char *vendor, char *publisher, nvlist_t *attr_list, sysevent_id_t *eid); |
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attr_list
- pointer to an nvlist_t, listing the name-value attributes associated with the event, or NULL if there are no such attributes for this event
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class
- pointer to a string defining the event class
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eid
- pointer to a system unique identifier
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publisher
- pointer to a string defining the event's publisher nam
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subclass
- pointer to a string defining the event subclass
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vendor
- pointer to a string defining the vendor
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The sysevent_post_event() function causes a system event of the specified class, subclass, vendor, and publisher to be generated on behalf of the caller and queued for delivery to the sysevent daemon syseventd(1M).
The vendor must be the company stock symbol of the event posting application. The publisher should be the name of the application generating the event.
For example, all events posted by Sun applications begin with the company's stock symbol, "SUNW". The publisher is usually the name of the application generating the system event. A system event generated by devfsadm(1M) has a publisher string of devfsadm.
The publisher information is used by sysevent consumers to filter unwanted event publishers.
Upon successful queuing of the system event, a unique identifier is assigned to eid.
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The sysevent_post_event() function returns 0 if the system event has been queued successfully for delivery. Otherwise it returns -1 and sets errno to indicate the error.
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The sysevent_post_event() function will fail if:
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ENOMEM
- Insufficient resources to queue the system event.
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EIO
- The syseventd daemon is not responding and events cannot be queued or delivered at this time.
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EINVAL
- Invalid argument.
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EPERM
- Permission denied.
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EFAULT
- A copy error occurred.
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| | Example 1. Post a system event event with no attributes.
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The following example posts a system event event with no attributes.
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if (sysevent_post_event(EC_PRIV, "ESC_MYSUBCLASS", "SUNW", argv[0],
NULL) != 0) {
fprintf(stdout, "error logging system event\n");
}
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Example 2. Post a system event with two name-value pair attributes.
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The following example posts a system event event with two name-value pair attributes, an integer value and a string.
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nvlist_t *attr_list;
uint32_t uint32_val = 0XFFFFFFFF;
char *string_val = "string value data";
if (nvlist_alloc(&attr_list, 0, 0) == 0) {
err = nvlist_add_uint32(attr_list, "uint32 data", uint32_val);
if (err == 0)
err = nvlist_add_string(attr_list, "str data",
str_value);
if (err == 0)
err = sysevent_post_event("EC_PRIV", "ESC_MYSUBCLASS",
"SUNW", argv[0], attr_list);
if (err != 0)
fprintf(stdout, "error logging system event\n");
nvlist_free(attr_list);
}
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See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Interface Stability | Evolving |
| MT-Level | MT-Safe |
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