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_file_mprotect(struct vm_area_struct *vma, unsigned long prot);
22extern int ima_load_data(enum kernel_load_data_id id);
23extern int ima_read_file(struct file *file, enum kernel_read_file_id id);
24extern int ima_post_read_file(struct file *file, void *buf, loff_t size,
25 enum kernel_read_file_id id);
26extern void ima_post_path_mknod(struct dentry *dentry);
27extern int ima_file_hash(struct file *file, char *buf, size_t buf_size);
28extern void ima_kexec_cmdline(const void *buf, int size);
29
30#ifdef CONFIG_IMA_KEXEC
31extern void ima_add_kexec_buffer(struct kimage *image);
32#endif
33
34#ifdef CONFIG_IMA_SECURE_AND_OR_TRUSTED_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_file_mprotect(struct vm_area_struct *vma,
75 unsigned long prot)
76{
77 return 0;
78}
79
80static inline int ima_load_data(enum kernel_load_data_id id)
81{
82 return 0;
83}
84
85static inline int ima_read_file(struct file *file, enum kernel_read_file_id id)
86{
87 return 0;
88}
89
90static inline int ima_post_read_file(struct file *file, void *buf, loff_t size,
91 enum kernel_read_file_id id)
92{
93 return 0;
94}
95
96static inline void ima_post_path_mknod(struct dentry *dentry)
97{
98 return;
99}
100
101static inline int ima_file_hash(struct file *file, char *buf, size_t buf_size)
102{
103 return -EOPNOTSUPP;
104}
105
106static inline void ima_kexec_cmdline(const void *buf, int size) {}
107#endif /* CONFIG_IMA */
108
109#ifndef CONFIG_IMA_KEXEC
110struct kimage;
111
112static inline void ima_add_kexec_buffer(struct kimage *image)
113{}
114#endif
115
116#ifdef CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS
117extern void ima_post_key_create_or_update(struct key *keyring,
118 struct key *key,
119 const void *payload, size_t plen,
120 unsigned long flags, bool create);
121#else
122static inline void ima_post_key_create_or_update(struct key *keyring,
123 struct key *key,
124 const void *payload,
125 size_t plen,
126 unsigned long flags,
127 bool create) {}
128#endif /* CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS */
129
130#ifdef CONFIG_IMA_APPRAISE
131extern bool is_ima_appraise_enabled(void);
132extern void ima_inode_post_setattr(struct dentry *dentry);
133extern int ima_inode_setxattr(struct dentry *dentry, const char *xattr_name,
134 const void *xattr_value, size_t xattr_value_len);
135extern int ima_inode_removexattr(struct dentry *dentry, const char *xattr_name);
136#else
137static inline bool is_ima_appraise_enabled(void)
138{
139 return 0;
140}
141
142static inline void ima_inode_post_setattr(struct dentry *dentry)
143{
144 return;
145}
146
147static inline int ima_inode_setxattr(struct dentry *dentry,
148 const char *xattr_name,
149 const void *xattr_value,
150 size_t xattr_value_len)
151{
152 return 0;
153}
154
155static inline int ima_inode_removexattr(struct dentry *dentry,
156 const char *xattr_name)
157{
158 return 0;
159}
160#endif /* CONFIG_IMA_APPRAISE */
161
162#if defined(CONFIG_IMA_APPRAISE) && defined(CONFIG_INTEGRITY_TRUSTED_KEYRING)
163extern bool ima_appraise_signature(enum kernel_read_file_id func);
164#else
165static inline bool ima_appraise_signature(enum kernel_read_file_id func)
166{
167 return false;
168}
169#endif /* CONFIG_IMA_APPRAISE && CONFIG_INTEGRITY_TRUSTED_KEYRING */
170#endif /* _LINUX_IMA_H */