cmd/auditset/svc-auditset.c

	svc-auditset.c revision f89940742f5d14dde79b69b98a414dd7b7f585c7
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (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) 2010, Oracle and/or its affiliates. All rights reserved.
 */

/*
 * svc-auditset - auditset transient service (AUDITSET_FMRI) startup method;
 * sets non-/attributable mask in the kernel context.
 */

#include <audit_scf.h>
#include <bsm/adt.h>
#include <bsm/libbsm.h>
#include <errno.h>
#include <locale.h>
#include <stdio.h>

#if !defined(SMF_EXIT_ERR_OTHER)
#define SMF_EXIT_ERR_OTHER  1
#endif

/*
 * update_kcontext() - updates the non-/attributable preselection masks in
 * the kernel context. Returns B_TRUE on success, B_FALSE otherwise.
 */
boolean_t
update_kcontext(int cmd, char *cmask)
{
    au_mask_t   bmask;

    (void) getauditflagsbin(cmask, &bmask);
    if (auditon(cmd, (caddr_t)&bmask, sizeof (bmask)) == -1) {
        (void) printf("Could not update kernel context (%s).\n",
            cmd == A_SETAMASK ? "A_SETAMASK" : "A_SETKMASK");
        return (B_FALSE);
    }

#ifdef  DEBUG
    (void) printf("svc-auditset: %s mask set to %s",
        cmd == A_SETAMASK ? "Attributable" : "Non-Attributable", cmask);
#endif

    return (B_TRUE);
}

int
main(void)
{
    char        *auditset_fmri;
    char        *mask_cfg;

    (void) setlocale(LC_ALL, "");
    (void) textdomain(TEXT_DOMAIN);

    /* allow execution only inside the SMF facility */
    if ((auditset_fmri = getenv("SMF_FMRI")) == NULL ||
        strcmp(auditset_fmri, AUDITSET_FMRI) != 0) {
        (void) printf(gettext("svc-auditset can be executed only "
            "inside the SMF facility.\n"));
        return (SMF_EXIT_ERR_NOSMF);
    }

    /* check the c2audit module state */
    if (adt_audit_state(AUC_DISABLED)) {
#ifdef  DEBUG
        if (errno == ENOTSUP) {
            (void) printf("c2audit module is excluded from "
                "the system(4); kernel won't be updated.\n");
        } else {
            (void) printf("%s\n", strerror(errno));
        }
#endif
        return (SMF_EXIT_OK);
    }

    /* update attributable mask */
    if (!do_getflags_scf(&mask_cfg) || mask_cfg == NULL) {
        (void) printf("Could not get configured attributable audit "
            "flags.\n");
        return (SMF_EXIT_ERR_OTHER);
    }
    if (!update_kcontext(A_SETAMASK, mask_cfg)) {
        free(mask_cfg);
        return (SMF_EXIT_ERR_OTHER);
    }
    free(mask_cfg);

    /* update non-attributable mask */
    if (!do_getnaflags_scf(&mask_cfg) || mask_cfg == NULL) {
        (void) printf("Could not get configured non-attributable "
            "audit flags.\n");
        return (SMF_EXIT_ERR_OTHER);
    }
    if (!update_kcontext(A_SETKMASK, mask_cfg)) {
        free(mask_cfg);
        return (SMF_EXIT_ERR_OTHER);
    }
    free(mask_cfg);

    return (SMF_EXIT_OK);
}