1 /*
2  * AppArmor security module
3  *
4  * This file contains AppArmor filesystem definitions.
5  *
6  * Copyright (C) 1998-2008 Novell/SUSE
7  * Copyright 2009-2010 Canonical Ltd.
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License as
11  * published by the Free Software Foundation, version 2 of the
12  * License.
13  */
14 
15 #ifndef __AA_APPARMORFS_H
16 #define __AA_APPARMORFS_H
17 
18 extern struct path aa_null;
19 
20 enum aa_fs_type {
21 	AA_FS_TYPE_BOOLEAN,
22 	AA_FS_TYPE_STRING,
23 	AA_FS_TYPE_U64,
24 	AA_FS_TYPE_FOPS,
25 	AA_FS_TYPE_DIR,
26 };
27 
28 struct aa_fs_entry;
29 
30 struct aa_fs_entry {
31 	const char *name;
32 	struct dentry *dentry;
33 	umode_t mode;
34 	enum aa_fs_type v_type;
35 	union {
36 		bool boolean;
37 		char *string;
38 		unsigned long u64;
39 		struct aa_fs_entry *files;
40 	} v;
41 	const struct file_operations *file_ops;
42 };
43 
44 extern const struct file_operations aa_fs_seq_file_ops;
45 
46 #define AA_FS_FILE_BOOLEAN(_name, _value) \
47 	{ .name = (_name), .mode = 0444, \
48 	  .v_type = AA_FS_TYPE_BOOLEAN, .v.boolean = (_value), \
49 	  .file_ops = &aa_fs_seq_file_ops }
50 #define AA_FS_FILE_STRING(_name, _value) \
51 	{ .name = (_name), .mode = 0444, \
52 	  .v_type = AA_FS_TYPE_STRING, .v.string = (_value), \
53 	  .file_ops = &aa_fs_seq_file_ops }
54 #define AA_FS_FILE_U64(_name, _value) \
55 	{ .name = (_name), .mode = 0444, \
56 	  .v_type = AA_FS_TYPE_U64, .v.u64 = (_value), \
57 	  .file_ops = &aa_fs_seq_file_ops }
58 #define AA_FS_FILE_FOPS(_name, _mode, _fops) \
59 	{ .name = (_name), .v_type = AA_FS_TYPE_FOPS, \
60 	  .mode = (_mode), .file_ops = (_fops) }
61 #define AA_FS_DIR(_name, _value) \
62 	{ .name = (_name), .v_type = AA_FS_TYPE_DIR, .v.files = (_value) }
63 
64 extern void __init aa_destroy_aafs(void);
65 
66 struct aa_profile;
67 struct aa_ns;
68 
69 enum aafs_ns_type {
70 	AAFS_NS_DIR,
71 	AAFS_NS_PROFS,
72 	AAFS_NS_NS,
73 	AAFS_NS_RAW_DATA,
74 	AAFS_NS_LOAD,
75 	AAFS_NS_REPLACE,
76 	AAFS_NS_REMOVE,
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 
85 enum 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 
106 #define prof_dir(X) ((X)->dents[AAFS_PROF_DIR])
107 #define prof_child_dir(X) ((X)->dents[AAFS_PROF_PROFS])
108 
109 void __aa_fs_profile_rmdir(struct aa_profile *profile);
110 void __aa_fs_profile_migrate_dents(struct aa_profile *old,
111 				   struct aa_profile *new);
112 int __aa_fs_profile_mkdir(struct aa_profile *profile, struct dentry *parent);
113 void __aa_fs_ns_rmdir(struct aa_ns *ns);
114 int __aa_fs_ns_mkdir(struct aa_ns *ns, struct dentry *parent,
115 		     const char *name);
116 
117 #endif /* __AA_APPARMORFS_H */
118