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.TH "AVC_LOOKUP" "9" "09 October 2005" "" ""

.SH NAME
avc_lookup \- Look up an AVC entry.
.SH SYNOPSIS
"SYNOPSIS"
.sp
\fB
.sp
struct avc_node * avc_lookup  (u32 \fIssid\fB, u32 \fItsid\fB, u16 \fItclass\fB, u32 \fIrequested\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIssid\fB\fR
source security identifier
.TP
\fB\fItsid\fB\fR
target security identifier
.TP
\fB\fItclass\fB\fR
target security class
.TP
\fB\fIrequested\fB\fR
requested permissions, interpreted based on \fItclass\fR
.SH "DESCRIPTION"
.PP
Look up an AVC entry that is valid for the
\fIrequested\fR permissions between the SID pair
(\fIssid\fR, \fItsid\fR), interpreting the permissions
based on \fItclass\fR\&.  If a valid AVC entry exists,
then this function return the avc_node.
Otherwise, this function returns NULL.