eccd4beb31
because we need to do ioctl(2)s, which are not permitted in the capability mode. What we do now is to chroot(2) to /var/empty, which restricts access to file system name space and we drop privileges to hast user and hast group. This still allows to access to other name spaces, like list of processes, network and sysvipc. To address that, use jail(2) instead of chroot(2). Using jail(2) will restrict access to process table, network (we use ip-less jails) and sysvipc (if security.jail.sysvipc_allowed is turned off). This provides much better separation. MFC after: 1 week
57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
/*-
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* Copyright (c) 2010 The FreeBSD Foundation
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* Copyright (c) 2011 Pawel Jakub Dawidek <pawel@dawidek.net>
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* All rights reserved.
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*
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* This software was developed by Pawel Jakub Dawidek under sponsorship from
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* the FreeBSD Foundation.
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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 AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, 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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* $FreeBSD$
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*/
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#ifndef _SUBR_H_
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#define _SUBR_H_
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#include <sys/types.h>
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#include <stdbool.h>
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#include "hast.h"
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#define KEEP_ERRNO(work) do { \
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int _rerrno; \
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\
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_rerrno = errno; \
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work; \
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errno = _rerrno; \
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} while (0)
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int vsnprlcat(char *str, size_t size, const char *fmt, va_list ap);
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int snprlcat(char *str, size_t size, const char *fmt, ...);
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int provinfo(struct hast_resource *res, bool dowrite);
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const char *role2str(int role);
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int drop_privs(struct hast_resource *res);
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#endif /* !_SUBR_H_ */
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