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