door_return(3DOOR) Door Library Functions door_return(3DOOR)
NAME
door_return - return from a door invocation
SYNOPSIS
cc -mt [ flag ... ] file ... -ldoor [ library ... ]
#include <door.h>
int door_return(char *data_ptr, size_t data_size, door_desc_t *desc_ptr, uint_t num_desc);
DESCRIPTION
The door_return() function returns from a door invocation. It returns control to the thread that issued the associated door_call() and
blocks waiting for the next door invocation. See door_call(3DOOR). Results, if any, from the door invocation are passed back to the
client in the buffers pointed to by data_ptr and desc_ptr. If there is not a client associated with the door_return(), the calling thread
discards the results, releases any passed descriptors with the DOOR_RELEASE attribute, and blocks waiting for the next door invocation.
RETURN VALUES
Upon successful completion, door_return() does not return to the calling process. Otherwise, door_return() returns -1 to the calling
process and sets errno to indicate the error.
ERRORS
The door_return() function fails and returns to the calling process if:
E2BIG Arguments were too big for client.
EFAULT The address of data_ptr or desc_ptr is invalid.
EINVAL Invalid door_return() arguments were passed or a thread is bound to a door that no longer exists.
EMFILE The client has too many open descriptors.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Architecture |all |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO
door_call(3DOOR),libdoor(3LIB), attributes(5)
SunOS 5.10 5 Feb 2001 door_return(3DOOR)
