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015b41aeb4
Fix libapparmor_re/Makefile so it works correctly with rebuilds and improve state machine dump information, to aid with debugging of permission handling during the compile. Signed-off-by: John Johansen <john.johansen@canonical.com> MR: https://gitlab.com/apparmor/apparmor/-/merge_requests/1410 Approved-by: John Johansen <john@jjmx.net> Merged-by: John Johansen <john@jjmx.net>
153 lines
4.3 KiB
C++
153 lines
4.3 KiB
C++
/*
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* Copyright (c) 2022
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* Canonical, Ltd. (All rights reserved)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, contact Novell, Inc. or Canonical
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* Ltd.
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*/
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#ifndef __AA_PERM_H
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#define __AA_PERM_H
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/* this represents permissions as used as part of the state machine in
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* the kernel.
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* It is possible this will get further mapped for compatibility with
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* older versions
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*/
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#include <ostream>
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#include <iostream>
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using std::ostream;
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using std::cerr;
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#include <stdint.h>
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#include <sys/apparmor.h>
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/* same as in immunix.h - make it so they can both be included or used alone */
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#ifndef AA_MAY_EXEC
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#define AA_MAY_EXEC 1
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#define AA_MAY_WRITE 2
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#define AA_MAY_READ 4
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#define AA_MAY_APPEND 8
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#endif
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#ifndef AA_MAY_CREATE
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// these are in apparmor.h
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#define AA_MAY_CREATE 0x0010
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#define AA_MAY_DELETE 0x0020
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#define AA_MAY_OPEN 0x0040
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#define AA_MAY_RENAME 0x0080 /* pair */
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#define AA_MAY_SETATTR 0x0100 /* meta write */
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#define AA_MAY_GETATTR 0x0200 /* meta read */
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#define AA_MAY_SETCRED 0x0400 /* security cred/attr */
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#define AA_MAY_GETCRED 0x0800
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#define AA_MAY_CHMOD 0x1000 /* pair */
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#define AA_MAY_CHOWN 0x2000 /* pair */
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#endif
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#define AA_MAY_CHGRP 0x4000 /* pair */
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#ifndef AA_MAY_CREATE
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#define AA_MAY_LOCK 0x8000 /* LINK_SUBSET overlaid */
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#define AA_EXEC_MMAP 0x00010000
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#endif
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#define AA_MAY_MPROT 0x00020000 /* extend conditions */
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#ifndef AA_MAY_CREATE
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#define AA_MAY_LINK 0x00040000 /* pair */
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#endif
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#define AA_MAY_SNAPSHOT 0x00080000 /* pair */
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#define AA_MAY_DELEGATE
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#define AA_CONT_MATCH 0x08000000
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// TODO: move into a reworked immunix.h that is dependent on perms.h
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#define AA_COMPAT_CONT_MATCH (AA_CONT_MATCH << 1)
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#define AA_MAY_STACK 0x10000000
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#define AA_MAY_ONEXEC 0x20000000 /* either stack or change_profile */
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#define AA_MAY_CHANGE_PROFILE 0x40000000
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#define AA_MAY_CHANGEHAT 0x80000000
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#define AA_LINK_SUBSET AA_MAY_LOCK /* overlaid */
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/*
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* The xindex is broken into 3 parts
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* - index - an index into either the exec name table or the variable table
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* - exec type - which determines how the executable name and index are used
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* - flags - which modify how the destination name is applied
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*/
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#define AA_X_INDEX_MASK 0xffffff
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#define AA_X_TYPE_MASK 0x0c000000
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#define AA_X_NONE AA_INDEX_NONE
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#define AA_X_NAME 0x04000000 /* use executable name px */
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#define AA_X_TABLE 0x08000000 /* use a specified name ->n# */
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#define AA_X_UNSAFE 0x10000000
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#define AA_X_CHILD 0x20000000
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#define AA_X_INHERIT 0x40000000
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#define AA_X_UNCONFINED 0x80000000
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typedef uint32_t perm32_t;
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class aa_perms {
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public:
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perm32_t allow;
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perm32_t deny; /* explicit deny, or conflict if allow also set */
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perm32_t subtree; /* allow perm on full subtree only when allow is set */
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perm32_t cond; /* set only when ~allow and ~deny */
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perm32_t kill; /* set only when ~allow | deny */
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perm32_t complain; /* accumulates only used when ~allow & ~deny */
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perm32_t prompt; /* accumulates only used when ~allow & ~deny */
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perm32_t audit; /* set only when allow is set */
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perm32_t quiet; /* set only when ~allow | deny */
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perm32_t hide; /* set only when ~allow | deny */
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uint32_t xindex;
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uint32_t tag; /* tag string index, if present */
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uint32_t label; /* label string index, if present */
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void dump_header(ostream &os)
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{
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os << "(allow/deny/prompt//audit/quiet//xindex)\n";
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}
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void dump(ostream &os)
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{
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os << std::hex << "(0x" << allow << "/0x" << deny << "/0x"
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<< prompt << "//0x" << audit << "/0x" << quiet
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<< std::dec << "//";
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if (xindex & AA_X_UNSAFE)
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os << "unsafe ";
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if (xindex & AA_X_TYPE_MASK) {
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if (xindex & AA_X_CHILD)
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os << "c";
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else
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os << "p";
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}
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if (xindex & AA_X_INHERIT)
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os << "i";
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if (xindex & AA_X_UNCONFINED)
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os << "u";
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os << (xindex & AA_X_INDEX_MASK);
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os << ")";
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}
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};
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#endif /* __AA_PERM_H */
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