Content-type: text/html Man page of door_info

door_info

Section: Door Library Functions (3DOOR)
Updated: 14 Feb 2003
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NAME

door_info - return information associated with a door descriptor  

SYNOPSIS

cc [ flag ... ] file ... -ldoor [ library ... ]
#include <door.h>

int door_info(int d, struct door_info *info);  

DESCRIPTION

The door_info() function returns information associated with a door descriptor. It obtains information about the door descriptor d and places the information that is relevant to the door in the structure pointed to by the info argument.

The door_info structure pointed to by the info argument contains the following members:

pid_t           di_target;      /* door server pid */
door_ptr_t      di_proc;        /* server function */
door_ptr_t      di_data;        /* data cookie for invocation */
door_attr_t     di_attributes;  /* door attributes */
door_id_t       di_uniquifier;  /* unique id among all doors */

The di_target member is the process ID of the door server, or -1 if the door server process has exited.

The values for di_attributes may be composed of the following:

DOOR_LOCAL The door descriptor refers to a service procedure in this process.

DOOR_UNREF The door has requested notification when all but the last reference has gone away.

DOOR_UNREF_MULTI Similar to DOOR_UNREF, except multiple unreferenced notifications may be delivered for this door.

DOOR_IS_UNREF There is currently only one descriptor referring to the door.

DOOR_REFUSE_DESC The door refuses any attempt to door_call(3DOOR) it with argument descriptors.

DOOR_REVOKED The door descriptor refers to a door that has been revoked.

DOOR_PRIVATE The door has a separate pool of server threads associated with it.

The di_proc and di_data members are returned as door_ptr_t objects rather than void * pointers to allow clients and servers to interoperate in environments where the pointer sizes may vary in size (for example, 32-bit clients and 64-bit servers). Each door has a system-wide unique number associated with it that is set when the door is created by door_create(). This number is returned in di_uniquifier.  

RETURN VALUES

Upon successful completion, 0 is returned. Otherwise, -1 is returned and errno is set to indicate the error.  

ERRORS

The door_info() function will fail if:

EFAULT The address of argument info is an invalid address.

EBADF d is not a door descriptor.

 

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
Architectureall
AvailabilitySUNWcsu
Interface StabilityEvolving
MT-LevelSafe

 

SEE ALSO

door_bind(3DOOR), door_call(3DOOR), door_create(3DOOR), door_server_create(3DOOR), libdoor(3LIB), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
ERRORS
ATTRIBUTES
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 02:37:38 GMT, October 02, 2010