02-02-2019
Are you using the same user on port 2200 as the one on 22?
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LEARN ABOUT OPENSOLARIS
port_alert
port_alert(3C) Standard C Library Functions port_alert(3C)
NAME
port_alert - set a port in alert mode
SYNOPSIS
#include <port.h>
int port_alert(int port, int flags, int events, void *user);
DESCRIPTION
The port_alert() function transitions a port into or out of alert mode. A port in alert mode immediately awakens all threads blocked in
port_get(3C) or port_getn(3C). These threads return with an alert notification that consists of a single port_event_t structure with the
source PORT_SOURCE_ALERT. Subsequent threads trying to retrieve events from a port that is in alert mode will return immediately with the
alert notification.
A port is transitioned into alert mode by calling the port_alert() function with a non-zero events parameter. The specified events and
user parameters will be made available in the portev_events and the portev_user members of the alert notification, respectively. The flags
argument determines the mode of operation of the alert mode:
o If flags is set to PORT_ALERT_SET, port_alert() sets the port in alert mode independent of the current state of the port. The
portev_events and portev_user members are set or updated accordingly.
o If flags is set to PORT_ALERT_UPDATE and the port is not in alert mode, port_alert() transitions the port into alert mode. The
portev_events and portev_user members are set accordingly.
o If flags is set to PORT_ALERT_UPDATE and the port is already in alert mode, port_alert() returns with an error value of EBUSY.
PORT_ALERT_SET and PORT_ALERT_UPDATE are mutually exclusive.
A port is transitioned out of alert mode by calling the port_alert() function with a zero events parameter.
Events can be queued to a port that is in alert mode, but they will not be retrievable until the port is transitioned out of alert mode.
RETURN VALUES
Upon succesful completion, 0 is returned. Otherwise, -1 is returned and errno is set to indicate the error.
ERRORS
The port_alert() function will fail if:
EBADF The port identifier is not valid.
EBADFD The port argument is not an event port file descriptor.
EBUSY The port is already in alert mode.
EINVAL Mutually exclusive flags are set.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Architecture |all |
+-----------------------------+-----------------------------+
|Availability |SUNWcsr, SUNWhea |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO
port_associate(3C), port_create(3C), port_get(3C), port_send(3C), attributes(5)
SunOS 5.11 1 Oct 2003 port_alert(3C)