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/*-
* Copyright (c) 2001 Networks Associates Technologies, Inc.
* All rights reserved.
*
* This software was developed for the FreeBSD Project by NAI Labs, the
* Security Research Division of Network Associates, Inc. under
* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
* CHATS research program.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id$
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/sysctl.h>
#include <sys/syslog.h>
#include "lomacfs.h"
#include "kernel_interface.h"
/* The following definition sets the global log verbosity level. */
SYSCTL_NODE(_kern, OID_AUTO, lomac, CTLFLAG_RW, 0, "LOMAC");
SYSCTL_NODE(_kern_lomac, OID_AUTO, verbose, CTLFLAG_RW, 0, "LOMAC verbosity");
#define VERBOSITY_SETTING(level) \
unsigned int lomac_verbose_##level## = 1; \
SYSCTL_UINT(_kern_lomac_verbose, OID_AUTO, level, \
CTLFLAG_RW, &lomac_verbose_##level##, 1, "")
#include "kernel_log.h"
/* sbuf_start()
*
* in: nothing
* out: nothing
* return: struct sbuf * to pass to later callers
*
*/
lomac_log_t *
log_start(void) {
struct sbuf *s;
s = sbuf_new(NULL, NULL, PATH_MAX * 2, 0);
KASSERT(s != NULL, ("sbuf uses M_WAITOK -- must not return NULL!"));
return (s);
} /* log_start() */
/* log_append_string()
*
* in: s - a struct sbuf *
* in: data_s - null-terminated string to append to log
* out: nothing, see description for side-effects
* return: nothing
*
* This function appends `data_s' to `log_s', being careful to ensure
* that there is sufficient room in `log_s' for the data and a null
* terminator. If there is insufficient room in `log_s' for the entire
* `data_s' string, this function will append only the prefix of `data_s'
* which fits.
*
*/
void
log_append_string(lomac_log_t *s, const char *data_s) {
(void)sbuf_cat(s, data_s);
} /* log_append_string */
/* log_append_int()
*
* in: data - integer value to append to log
* out: nothing, see description for side-effects
* return: nothing
*
* This function determines the ASCII representation of the integer
* value in `data' and, if there is sufficient room, appends this
* ASCII representation to `log_s'. If there is insufficient room,
* this function behaves as log_append_string().
*
*/
void
log_append_int(lomac_log_t *s, int data) {
(void)sbuf_printf(s, "%d", data);
} /* log_append_int() */
/* log_append_subject_id()
*
* in: p_subject - subject whose ID we want to append to the log message
* out: nothing, see description for side-effects
* return: nothing
*
* This function appends a string describing the identity of `p_subject'
* to `log_s'. If there is insufficient room in `log_s' for the entire
* ID string, only a (possibly empty) prefix of the ID string will be
* appended.
*
*/
void
log_append_subject_id(lomac_log_t *s, const lomac_subject_t *p_subject) {
(void)sbuf_printf(s, "p%dg%du%d:%s", p_subject->p_pid,
p_subject->p_pgrp->pg_id, p_subject->p_ucred->cr_uid,
p_subject->p_comm);
} /* log_append_subject_id() */
/* log_append_object_id()
*
* in: p_object - object whose ID we want to append to the log message
* out: nothing, see description for side-effects
* return: nothing
*
* This function appends a string describing the identity of `p_object'
* to `log_s'. If there is insufficient room in `log_s' for the entire
* ID string, only a (possibly empty) prefix of the ID string will be
* appended.
*
*/
void
log_append_object_id(lomac_log_t *s, const lomac_object_t *p_object) {
struct lomac_node *ln;
switch (p_object->lo_type) {
case LO_TYPE_UVNODE:
(void)sbuf_printf(s, "vp %p", p_object->lo_object.vnode);
break;
case LO_TYPE_LVNODE:
ln = VTOLOMAC(p_object->lo_object.vnode);
#ifdef LOMAC_DEBUG_INCNAME
(void)sbuf_printf(s, "named \"%s\"", ln->ln_name);
#else
if (ln->ln_entry != NULL)
(void)sbuf_printf(s, "named \"%s\"",
ln->ln_entry->ln_path);
else
(void)sbuf_printf(s, "under \"%s\"",
ln->ln_underpolicy->ln_path);
#endif
break;
case LO_TYPE_PIPE:
(void)sbuf_printf(s, "pipe %p", p_object->lo_object.pipe);
break;
case LO_TYPE_SOCKETPAIR:
(void)sbuf_printf(s, "socket %p", p_object->lo_object.socket);
break;
default:
panic("invalid LOMAC object type");
}
} /* log_append_object_id() */
/* log_print()
*
* in: nothing
* out: nothing
* return: nothing
*
* This function prints `log_s' to the system log.
*
*/
void
log_print(lomac_log_t *s) {
sbuf_finish(s);
log(LOG_INFO, "%s", sbuf_data(s));
sbuf_delete(s);
} /* log_print() */
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