man/man3c/door_ucred.3c

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 DOOR_UCRED 3C "Mar 22, 2005"
 NAME
door_ucred - return credential information associated with the client
 SYNOPSIS

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

int door_ucred(ucred_t **info);


 DESCRIPTION

The door_ucred() function returns credential information associated with
the client, if any, of the current door invocation.

When successful, door_ucred() writes a pointer to a user credential to
the location pointed to by info if that location was previously
NULL. If that location was non-null, door_ucred() assumes that
info points to a previously allocated ucred_t which is then reused.
The location pointed to by info can be used multiple times before being
freed. The value returned in info must be freed using
ucred_free(3C).

The resulting user credential includes information about the effective user and
group ID, the real user and group ID, all privilege sets and the calling PID.

The credential information associated with the client refers to the information
from the immediate caller, not necessarily from the first thread in a chain of
door calls.
 RETURN VALUES

Upon successful completion, door_ucred() returns 0. Otherwise, -1 is
returned and errno is set to indicate the error, in which case the memory
location pointed to by the info argument is unchanged.
 ERRORS

The door_ucred() function will fail if:
EAGAIN

The location pointed to by info was NULL and allocating memory
sufficient to hold a ucred failed.


EFAULT

The address of the info argument is invalid.


EINVAL

There is no associated door client.


ENOMEM

The location pointed to by info was NULL and allocating memory
sufficient to hold a ucred failed.


 ATTRIBUTES

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


ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Stable
MT-Level Safe


 SEE ALSO

door_call(3C), door_create(3C), ucred_get(3C),
attributes(5)