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1554ba03b6
This module allows controlled privilege escallation via mac labels securely associated with a process via mac_veriexec. There are over 700 PRIV_* but we can compress many of them into a single GBL_* thus constraining the size of gbl labels. The goal is to allow a daemon to run as an unprivileged process while still being able a set of privileged operations needed. We add APIs to libveriexec so that userland processes can check labels and an exec_script API that allows a suitably labeled process to run something like a python interpreter directly if necessary; overcomming the 'indirect' flag applied to the interpreter. Add -l option to sbin/veriexec to report labels. Reviewed by: stevek Sponsored by: Juniper Networks, Inc. Differential Revision: https://reviews.freebsd.org/D41431
56 lines
2.3 KiB
C
56 lines
2.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2011-2023, Juniper Networks, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __LIBVERIEXEC_H__
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#define __LIBVERIEXEC_H__
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struct mac_veriexec_syscall_params;
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int veriexec_check_fd_mode(int, unsigned int);
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int veriexec_check_path_mode(const char *, unsigned int);
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int veriexec_check_fd(int);
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int veriexec_check_path(const char *);
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int veriexec_get_pid_params(pid_t, struct mac_veriexec_syscall_params *);
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int veriexec_get_path_params(const char *,
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struct mac_veriexec_syscall_params *);
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int veriexec_check_path_label(const char *, const char *);
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int veriexec_check_pid_label(pid_t, const char *);
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char * veriexec_get_path_label(const char *, char *, size_t);
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char * veriexec_get_pid_label(pid_t, char *, size_t);
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unsigned int gbl_check_path(const char *);
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unsigned int gbl_check_pid(pid_t);
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int execv_script(const char *, char * const *);
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#define HAVE_GBL_CHECK_PID 1
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#define HAVE_VERIEXEC_CHECK_PATH_LABEL 1
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#define HAVE_VERIEXEC_CHECK_PID_LABEL 1
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#define HAVE_VERIEXEC_GET_PATH_LABEL 1
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#define HAVE_VERIEXEC_GET_PID_LABEL 1
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#endif /* __LIBVERIEXEC_H__ */
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