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/kernel_read_file.h>
11#include <linux/fs.h>
12#include <linux/security.h>
13#include <linux/kexec.h>
14struct linux_binprm;
15
16#ifdef CONFIG_IMA
17extern int ima_bprm_check(struct linux_binprm *bprm);
18extern int ima_file_check(struct file *file, int mask);
19extern void ima_post_create_tmpfile(struct inode *inode);
20extern void ima_file_free(struct file *file);
21extern int ima_file_mmap(struct file *file, unsigned long prot);
22extern int ima_file_mprotect(struct vm_area_struct *vma, unsigned long prot);
23extern int ima_load_data(enum kernel_load_data_id id, bool contents);
24extern int ima_post_load_data(char *buf, loff_t size,
25 enum kernel_load_data_id id, char *description);
26extern int ima_read_file(struct file *file, enum kernel_read_file_id id,
27 bool contents);
28extern int ima_post_read_file(struct file *file, void *buf, loff_t size,
29 enum kernel_read_file_id id);
30extern void ima_post_path_mknod(struct dentry *dentry);
31extern int ima_file_hash(struct file *file, char *buf, size_t buf_size);
32extern int ima_inode_hash(struct inode *inode, char *buf, size_t buf_size);
33extern void ima_kexec_cmdline(int kernel_fd, const void *buf, int size);
34
35#ifdef CONFIG_IMA_APPRAISE_BOOTPARAM
36extern void ima_appraise_parse_cmdline(void);
37#else
38static inline void ima_appraise_parse_cmdline(void) {}
39#endif
40
41#ifdef CONFIG_IMA_KEXEC
42extern void ima_add_kexec_buffer(struct kimage *image);
43#endif
44
45#ifdef CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT
46extern bool arch_ima_get_secureboot(void);
47extern const char * const *arch_get_ima_policy(void);
48#else
49static inline bool arch_ima_get_secureboot(void)
50{
51 return false;
52}
53
54static inline const char * const *arch_get_ima_policy(void)
55{
56 return NULL;
57}
58#endif
59
60#else
61static inline int ima_bprm_check(struct linux_binprm *bprm)
62{
63 return 0;
64}
65
66static inline int ima_file_check(struct file *file, int mask)
67{
68 return 0;
69}
70
71static inline void ima_post_create_tmpfile(struct inode *inode)
72{
73}
74
75static inline void ima_file_free(struct file *file)
76{
77 return;
78}
79
80static inline int ima_file_mmap(struct file *file, unsigned long prot)
81{
82 return 0;
83}
84
85static inline int ima_file_mprotect(struct vm_area_struct *vma,
86 unsigned long prot)
87{
88 return 0;
89}
90
91static inline int ima_load_data(enum kernel_load_data_id id, bool contents)
92{
93 return 0;
94}
95
96static inline int ima_post_load_data(char *buf, loff_t size,
97 enum kernel_load_data_id id,
98 char *description)
99{
100 return 0;
101}
102
103static inline int ima_read_file(struct file *file, enum kernel_read_file_id id,
104 bool contents)
105{
106 return 0;
107}
108
109static inline int ima_post_read_file(struct file *file, void *buf, loff_t size,
110 enum kernel_read_file_id id)
111{
112 return 0;
113}
114
115static inline void ima_post_path_mknod(struct dentry *dentry)
116{
117 return;
118}
119
120static inline int ima_file_hash(struct file *file, char *buf, size_t buf_size)
121{
122 return -EOPNOTSUPP;
123}
124
125static inline int ima_inode_hash(struct inode *inode, char *buf, size_t buf_size)
126{
127 return -EOPNOTSUPP;
128}
129
130static inline void ima_kexec_cmdline(int kernel_fd, const void *buf, int size) {}
131#endif /* CONFIG_IMA */
132
133#ifndef CONFIG_IMA_KEXEC
134struct kimage;
135
136static inline void ima_add_kexec_buffer(struct kimage *image)
137{}
138#endif
139
140#ifdef CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS
141extern void ima_post_key_create_or_update(struct key *keyring,
142 struct key *key,
143 const void *payload, size_t plen,
144 unsigned long flags, bool create);
145#else
146static inline void ima_post_key_create_or_update(struct key *keyring,
147 struct key *key,
148 const void *payload,
149 size_t plen,
150 unsigned long flags,
151 bool create) {}
152#endif /* CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS */
153
154#ifdef CONFIG_IMA_APPRAISE
155extern bool is_ima_appraise_enabled(void);
156extern void ima_inode_post_setattr(struct dentry *dentry);
157extern int ima_inode_setxattr(struct dentry *dentry, const char *xattr_name,
158 const void *xattr_value, size_t xattr_value_len);
159extern int ima_inode_removexattr(struct dentry *dentry, const char *xattr_name);
160#else
161static inline bool is_ima_appraise_enabled(void)
162{
163 return 0;
164}
165
166static inline void ima_inode_post_setattr(struct dentry *dentry)
167{
168 return;
169}
170
171static inline int ima_inode_setxattr(struct dentry *dentry,
172 const char *xattr_name,
173 const void *xattr_value,
174 size_t xattr_value_len)
175{
176 return 0;
177}
178
179static inline int ima_inode_removexattr(struct dentry *dentry,
180 const char *xattr_name)
181{
182 return 0;
183}
184#endif /* CONFIG_IMA_APPRAISE */
185
186#if defined(CONFIG_IMA_APPRAISE) && defined(CONFIG_INTEGRITY_TRUSTED_KEYRING)
187extern bool ima_appraise_signature(enum kernel_read_file_id func);
188#else
189static inline bool ima_appraise_signature(enum kernel_read_file_id func)
190{
191 return false;
192}
193#endif /* CONFIG_IMA_APPRAISE && CONFIG_INTEGRITY_TRUSTED_KEYRING */
194#endif /* _LINUX_IMA_H */