FreeBSD/Linux Kernel Cross Reference
sys/man/mach_port_deallocate.man

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    .\" HISTORY
    .\" $Log:       mach_port_deallocate.man,v $
    .\" Revision 2.6  93/05/10  19:31:05  rvb
    .\"     updated
    .\"     [93/04/21  16:03:16  lli]
    .\" 
    .\" Revision 2.1.1.1  93/04/21  16:01:44  lli
    .\"     updated
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    .\" Revision 2.5  91/12/11  08:42:46  jsb
    .\"     Changed <mach/mach.h> to <mach.h>.
    .\"     [91/11/25  10:55:16  rpd]
    .\" 
    .\" Revision 2.4  91/05/14  17:06:00  mrt
    .\"     Correcting copyright
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    .\" Revision 2.3  91/02/14  14:11:04  mrt
    .\"     Changed to new Mach copyright
    .\"     [91/02/12  18:11:15  mrt]
    .\" 
    .\" Revision 2.2  90/08/07  18:36:10  rpd
    .\"     Created.
    .\" 
    .TH mach_port_deallocate 2 9/19/86
    .CM 4
    .SH NAME
    .nf
    mach_port_deallocate \-  releases a user reference for a right
    .SH SYNOPSIS
    .nf
    .ft B
    #include <mach.h>
    
    kern_return_t
    mach_port_deallocate(task, name)
            mach_port_t task;
            mach_port_t name;
    .fi
    .ft P
    .SH ARGUMENTS
    .TP 12
    .B
    task
    The task holding the right.
    .TP 12
    .B
    name
    The task's name for the right.
    .SH DESCRIPTION
    \fBmach_port_deallocate\fR releases a user reference for a right.
    It allows a task to release a user reference for a send or send-once
    right without failing if the port has died and the right is now
    actually a dead name.
    
    If \fBname\fR denotes a dead name, send right, or send-once right,
    then the right loses one user reference.  If it only had
    one user reference, then the right is destroyed.
    .SH DIAGNOSTICS
    .TP 25
    KERN_SUCCESS
    The call succeeded.
    .TP 25
    KERN_INVALID_TASK
    \fBtask\fR was invalid.
    .TP 25
    KERN_INVALID_NAME
    \fBname\fR did not denote a right.
    .TP 25
    KERN_INVALID_RIGHT
    \fBname\fR denoted an invalid right.
    .PP
    The \fBmach_port_deallocate\fR call is actually an RPC to \fBtask\fR,
    normally a send right for a task port, but potentially any send right.
   In addition to the normal diagnostic
   return codes from the call's server (normally the kernel),
   the call may return \fBmach_msg(2)\fR return codes.
   .SH SEE ALSO
   mach_port_mod_refs(2), mach_port_destroy(2).

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