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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1994, by Sun Microsytems, Inc.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Interface to close a tnfctl handle
*/
#include "tnfctl_int.h"
#include "kernel_int.h"
#include "dbg.h"
#include <stdlib.h>
#include <signal.h>
#include <errno.h>
/* for bug 1253419 - guard against multiple tracing */
extern mutex_t _tnfctl_internalguard_lock;
/*
* Close a tnfctl handle - close any open fds and free up any memory
* that was allocated.
*/
tnfctl_errcode_t
tnfctl_close(tnfctl_handle_t *hdl, tnfctl_targ_op_t action)
{
tnfctl_errcode_t prexstat;
prb_status_t prbstat;
prb_proc_ctl_t *proc_p;
tnfctl_probe_t *probe_hdl, *tmp_hdl;
if (hdl == NULL)
return (TNFCTL_ERR_NONE);
if (hdl->mode == KERNEL_MODE) {
prexstat = _tnfctl_prbk_close(hdl);
if (prexstat)
return (prexstat);
}
if (hdl->mode == INTERNAL_MODE) {
_tnfctl_internal_releaselock();
} else if (hdl->mode != KERNEL_MODE) {
_tnfctl_external_releaselock(hdl);
}
_tnfctl_free_objs_and_probes(hdl);
/* free probe handles */
probe_hdl = hdl->probe_handle_list_head;
while (probe_hdl != NULL) {
/* call the destructor function for client probe data */
if (hdl->destroy_func)
hdl->destroy_func(probe_hdl->client_registered_data);
tmp_hdl = probe_hdl;
probe_hdl = probe_hdl->next;
free(tmp_hdl);
}
hdl->probe_handle_list_head = NULL;
if (hdl->mode != DIRECT_MODE) {
/* indirect, internal, or kernel mode */
free(hdl);
return (TNFCTL_ERR_NONE);
}
/* DIRECT_MODE */
proc_p = hdl->proc_p;
if (proc_p == NULL) {
free(hdl);
return (TNFCTL_ERR_NONE);
}
switch (action) {
case TNFCTL_TARG_DEFAULT:
break;
case TNFCTL_TARG_KILL:
prbstat = prb_proc_setklc(proc_p, B_TRUE);
if (prbstat)
return (_tnfctl_map_to_errcode(prbstat));
prbstat = prb_proc_setrlc(proc_p, B_FALSE);
if (prbstat)
return (_tnfctl_map_to_errcode(prbstat));
break;
case TNFCTL_TARG_RESUME:
prbstat = prb_proc_setklc(proc_p, B_FALSE);
if (prbstat)
return (_tnfctl_map_to_errcode(prbstat));
prbstat = prb_proc_setrlc(proc_p, B_TRUE);
if (prbstat)
return (_tnfctl_map_to_errcode(prbstat));
break;
case TNFCTL_TARG_SUSPEND:
prbstat = prb_proc_setklc(proc_p, B_FALSE);
if (prbstat)
return (_tnfctl_map_to_errcode(prbstat));
prbstat = prb_proc_setrlc(proc_p, B_FALSE);
if (prbstat)
return (_tnfctl_map_to_errcode(prbstat));
break;
default:
return (TNFCTL_ERR_BADARG);
}
prbstat = prb_proc_close(proc_p);
free(hdl);
return (_tnfctl_map_to_errcode(prbstat));
}
tnfctl_errcode_t
_tnfctl_internal_releaselock()
{
mutex_lock(&_tnfctl_internalguard_lock);
_tnfctl_internal_tracing_flag = 0;
mutex_unlock(&_tnfctl_internalguard_lock);
return (TNFCTL_ERR_NONE);
}
tnfctl_errcode_t
_tnfctl_external_releaselock(tnfctl_handle_t *hdl)
{
tnfctl_errcode_t prexstat;
prb_status_t prbstat;
uintptr_t targ_symbol_ptr;
pid_t pidzero = 0;
prexstat = _tnfctl_sym_find(hdl, TNFCTL_EXTERNAL_TRACEDPID,
&targ_symbol_ptr);
if (prexstat) {
return (prexstat);
}
prbstat = hdl->p_write(hdl->proc_p, targ_symbol_ptr,
&pidzero, sizeof (pidzero));
if (prbstat) {
return (_tnfctl_map_to_errcode(prbstat));
}
return (TNFCTL_ERR_NONE);
}
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