Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2008 IBM Corporation
4 * Author: Mimi Zohar <zohar@us.ibm.com>
5 */
6
7#ifndef _LINUX_IMA_H
8#define _LINUX_IMA_H
9
10#include <linux/fs.h>
11#include <linux/security.h>
12#include <linux/kexec.h>
13struct linux_binprm;
14
15#ifdef CONFIG_IMA
16extern int ima_bprm_check(struct linux_binprm *bprm);
17extern int ima_file_check(struct file *file, int mask);
18extern void ima_post_create_tmpfile(struct inode *inode);
19extern void ima_file_free(struct file *file);
20extern int ima_file_mmap(struct file *file, unsigned long prot);
21extern int ima_load_data(enum kernel_load_data_id id);
22extern int ima_read_file(struct file *file, enum kernel_read_file_id id);
23extern int ima_post_read_file(struct file *file, void *buf, loff_t size,
24 enum kernel_read_file_id id);
25extern void ima_post_path_mknod(struct dentry *dentry);
26extern int ima_file_hash(struct file *file, char *buf, size_t buf_size);
27extern void ima_kexec_cmdline(const void *buf, int size);
28
29#ifdef CONFIG_IMA_KEXEC
30extern void ima_add_kexec_buffer(struct kimage *image);
31#endif
32
33#if (defined(CONFIG_X86) && defined(CONFIG_EFI)) || defined(CONFIG_S390) \
34 || defined(CONFIG_PPC_SECURE_BOOT)
35extern bool arch_ima_get_secureboot(void);
36extern const char * const *arch_get_ima_policy(void);
37#else
38static inline bool arch_ima_get_secureboot(void)
39{
40 return false;
41}
42
43static inline const char * const *arch_get_ima_policy(void)
44{
45 return NULL;
46}
47#endif
48
49#else
50static inline int ima_bprm_check(struct linux_binprm *bprm)
51{
52 return 0;
53}
54
55static inline int ima_file_check(struct file *file, int mask)
56{
57 return 0;
58}
59
60static inline void ima_post_create_tmpfile(struct inode *inode)
61{
62}
63
64static inline void ima_file_free(struct file *file)
65{
66 return;
67}
68
69static inline int ima_file_mmap(struct file *file, unsigned long prot)
70{
71 return 0;
72}
73
74static inline int ima_load_data(enum kernel_load_data_id id)
75{
76 return 0;
77}
78
79static inline int ima_read_file(struct file *file, enum kernel_read_file_id id)
80{
81 return 0;
82}
83
84static inline int ima_post_read_file(struct file *file, void *buf, loff_t size,
85 enum kernel_read_file_id id)
86{
87 return 0;
88}
89
90static inline void ima_post_path_mknod(struct dentry *dentry)
91{
92 return;
93}
94
95static inline int ima_file_hash(struct file *file, char *buf, size_t buf_size)
96{
97 return -EOPNOTSUPP;
98}
99
100static inline void ima_kexec_cmdline(const void *buf, int size) {}
101#endif /* CONFIG_IMA */
102
103#ifndef CONFIG_IMA_KEXEC
104struct kimage;
105
106static inline void ima_add_kexec_buffer(struct kimage *image)
107{}
108#endif
109
110#ifdef CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS
111extern void ima_post_key_create_or_update(struct key *keyring,
112 struct key *key,
113 const void *payload, size_t plen,
114 unsigned long flags, bool create);
115#else
116static inline void ima_post_key_create_or_update(struct key *keyring,
117 struct key *key,
118 const void *payload,
119 size_t plen,
120 unsigned long flags,
121 bool create) {}
122#endif /* CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS */
123
124#ifdef CONFIG_IMA_APPRAISE
125extern bool is_ima_appraise_enabled(void);
126extern void ima_inode_post_setattr(struct dentry *dentry);
127extern int ima_inode_setxattr(struct dentry *dentry, const char *xattr_name,
128 const void *xattr_value, size_t xattr_value_len);
129extern int ima_inode_removexattr(struct dentry *dentry, const char *xattr_name);
130#else
131static inline bool is_ima_appraise_enabled(void)
132{
133 return 0;
134}
135
136static inline void ima_inode_post_setattr(struct dentry *dentry)
137{
138 return;
139}
140
141static inline int ima_inode_setxattr(struct dentry *dentry,
142 const char *xattr_name,
143 const void *xattr_value,
144 size_t xattr_value_len)
145{
146 return 0;
147}
148
149static inline int ima_inode_removexattr(struct dentry *dentry,
150 const char *xattr_name)
151{
152 return 0;
153}
154#endif /* CONFIG_IMA_APPRAISE */
155
156#if defined(CONFIG_IMA_APPRAISE) && defined(CONFIG_INTEGRITY_TRUSTED_KEYRING)
157extern bool ima_appraise_signature(enum kernel_read_file_id func);
158#else
159static inline bool ima_appraise_signature(enum kernel_read_file_id func)
160{
161 return false;
162}
163#endif /* CONFIG_IMA_APPRAISE && CONFIG_INTEGRITY_TRUSTED_KEYRING */
164#endif /* _LINUX_IMA_H */