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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * AppArmor security module
4 *
5 * This file contains AppArmor filesystem definitions.
6 *
7 * Copyright (C) 1998-2008 Novell/SUSE
8 * Copyright 2009-2010 Canonical Ltd.
9 */
10
11#ifndef __AA_APPARMORFS_H
12#define __AA_APPARMORFS_H
13
14#include <linux/init.h>
15#include <linux/types.h>
16
17extern struct path aa_null;
18
19enum aa_sfs_type {
20 AA_SFS_TYPE_BOOLEAN,
21 AA_SFS_TYPE_STRING,
22 AA_SFS_TYPE_U64,
23 AA_SFS_TYPE_FOPS,
24 AA_SFS_TYPE_DIR,
25};
26
27struct aa_sfs_entry;
28
29struct aa_sfs_entry {
30 const char *name;
31 struct dentry *dentry;
32 umode_t mode;
33 enum aa_sfs_type v_type;
34 union {
35 bool boolean;
36 char *string;
37 unsigned long u64;
38 struct aa_sfs_entry *files;
39 } v;
40 const struct file_operations *file_ops;
41};
42
43extern const struct file_operations aa_sfs_seq_file_ops;
44
45#define AA_SFS_FILE_BOOLEAN(_name, _value) \
46 { .name = (_name), .mode = 0444, \
47 .v_type = AA_SFS_TYPE_BOOLEAN, .v.boolean = (_value), \
48 .file_ops = &aa_sfs_seq_file_ops }
49#define AA_SFS_FILE_STRING(_name, _value) \
50 { .name = (_name), .mode = 0444, \
51 .v_type = AA_SFS_TYPE_STRING, .v.string = (_value), \
52 .file_ops = &aa_sfs_seq_file_ops }
53#define AA_SFS_FILE_U64(_name, _value) \
54 { .name = (_name), .mode = 0444, \
55 .v_type = AA_SFS_TYPE_U64, .v.u64 = (_value), \
56 .file_ops = &aa_sfs_seq_file_ops }
57#define AA_SFS_FILE_FOPS(_name, _mode, _fops) \
58 { .name = (_name), .v_type = AA_SFS_TYPE_FOPS, \
59 .mode = (_mode), .file_ops = (_fops) }
60#define AA_SFS_DIR(_name, _value) \
61 { .name = (_name), .v_type = AA_SFS_TYPE_DIR, .v.files = (_value) }
62
63extern void __init aa_destroy_aafs(void);
64
65struct aa_profile;
66struct aa_ns;
67
68enum aafs_ns_type {
69 AAFS_NS_DIR,
70 AAFS_NS_PROFS,
71 AAFS_NS_NS,
72 AAFS_NS_RAW_DATA,
73 AAFS_NS_LOAD,
74 AAFS_NS_REPLACE,
75 AAFS_NS_REMOVE,
76 AAFS_NS_REVISION,
77 AAFS_NS_COUNT,
78 AAFS_NS_MAX_COUNT,
79 AAFS_NS_SIZE,
80 AAFS_NS_MAX_SIZE,
81 AAFS_NS_OWNER,
82 AAFS_NS_SIZEOF,
83};
84
85enum aafs_prof_type {
86 AAFS_PROF_DIR,
87 AAFS_PROF_PROFS,
88 AAFS_PROF_NAME,
89 AAFS_PROF_MODE,
90 AAFS_PROF_ATTACH,
91 AAFS_PROF_HASH,
92 AAFS_PROF_RAW_DATA,
93 AAFS_PROF_RAW_HASH,
94 AAFS_PROF_RAW_ABI,
95 AAFS_PROF_SIZEOF,
96};
97
98#define ns_dir(X) ((X)->dents[AAFS_NS_DIR])
99#define ns_subns_dir(X) ((X)->dents[AAFS_NS_NS])
100#define ns_subprofs_dir(X) ((X)->dents[AAFS_NS_PROFS])
101#define ns_subdata_dir(X) ((X)->dents[AAFS_NS_RAW_DATA])
102#define ns_subload(X) ((X)->dents[AAFS_NS_LOAD])
103#define ns_subreplace(X) ((X)->dents[AAFS_NS_REPLACE])
104#define ns_subremove(X) ((X)->dents[AAFS_NS_REMOVE])
105#define ns_subrevision(X) ((X)->dents[AAFS_NS_REVISION])
106
107#define prof_dir(X) ((X)->dents[AAFS_PROF_DIR])
108#define prof_child_dir(X) ((X)->dents[AAFS_PROF_PROFS])
109
110int aa_create_aafs(void);
111
112void __aa_bump_ns_revision(struct aa_ns *ns);
113void __aafs_profile_rmdir(struct aa_profile *profile);
114void __aafs_profile_migrate_dents(struct aa_profile *old,
115 struct aa_profile *new);
116int __aafs_profile_mkdir(struct aa_profile *profile, struct dentry *parent);
117void __aafs_ns_rmdir(struct aa_ns *ns);
118int __aafs_ns_mkdir(struct aa_ns *ns, struct dentry *parent, const char *name,
119 struct dentry *dent);
120
121struct aa_loaddata;
122
123#ifdef CONFIG_SECURITY_APPARMOR_EXPORT_BINARY
124void __aa_fs_remove_rawdata(struct aa_loaddata *rawdata);
125int __aa_fs_create_rawdata(struct aa_ns *ns, struct aa_loaddata *rawdata);
126void __aa_remove_rawdata_symlink_dents(struct aa_profile *profile);
127int __aa_create_rawdata_symlink_dents(struct aa_profile *profile);
128#else
129static inline void __aa_fs_remove_rawdata(struct aa_loaddata *rawdata)
130{
131 /* empty stub */
132}
133
134static inline int __aa_fs_create_rawdata(struct aa_ns *ns,
135 struct aa_loaddata *rawdata)
136{
137 return 0;
138}
139
140static inline void __aa_remove_rawdata_symlink_dents(struct aa_profile *profile)
141{
142 /* empty stub */
143}
144
145static inline int __aa_create_rawdata_symlink_dents(struct aa_profile *profile)
146{
147 return 0;
148}
149#endif /* CONFIG_SECURITY_APPARMOR_EXPORT_BINARY */
150
151#endif /* __AA_APPARMORFS_H */