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.\" Copyright 2015 Joyent, Inc.
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.Dd May 11, 2016
.Dt PDELWAPT 3PROC
.Os
.Sh NAME
.Nm Pdelwapt
.Nd remove a watchpoint in a process
.Sh LIBRARY
.Lb libproc
.Sh SYNOPSIS
.In libproc.h
.Ft int
.Fo Pdelwapt
.Fa "struct ps_prochandle *P"
.Fa "const prwatch_t *wp"
.Fc
.Sh DESCRIPTION
The
.Fn Pdelwapt
function removes the watchpoint specified by
.Fa wp
from the process represented by the handle
.Fa P .
The watchpoint should have been installed with either
.Xr Psetwapt 3PROC
or the underlying /proc file system
.Sy PCWATCH
operation.
.Pp
The
.Fn Pdelwapt
function only works on running processes, such as those created through
.Xr Pgrab 3PROC
and
.Xr Pcreate 3PROC .
Attempting to remove a watchpoint from process handles to core files,
zombie processes, or ELF objects will fail.
.Sh RETURN VALUES
Upon successful completion, the
.Fn Pdelwapt
function removes the watchpoint and returns
.Sy 0 .
Otherwise,
.Sy -1
is returned,
.Sy errno
is set to indicate the error.
.Sh ERRORS
For a full list of possible errors see the
.Sy DIAGNOSTICS
section in
.Xr proc 4 .
.Pp
The
.Fn Pdelwapt
function will fail with:
.Bl -tag -width Er
.It Er ENOENT
The handle
.Fa P
refers to a grabbed core file, a zombie process, or an ELF object.
.El
.Sh INTERFACE STABILITY
.Sy Uncommitted
.Sh MT-LEVEL
See
.Sy LOCKING
in
.Xr libproc 3LIB .
.Sh SEE ALSO
.Xr libproc 3LIB ,
.Xr Pcreate 3PROC ,
.Xr Pgrab 3PROC ,
.Xr Pgrab_core 3PROC ,
.Xr Pgrab_file 3PROC ,
.Xr Psetwapt 3PROC ,
.Xr proc 4