1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2008 IBM Corporation
4 * Author: Mimi Zohar <zohar@us.ibm.com>
10 #include <linux/kernel_read_file.h>
12 #include <linux/security.h>
13 #include <linux/kexec.h>
14 #include <crypto/hash_info.h>
18 extern enum hash_algo ima_get_current_hash_algo(void);
19 extern int ima_bprm_check(struct linux_binprm *bprm);
20 extern int ima_file_check(struct file *file, int mask);
21 extern void ima_post_create_tmpfile(struct user_namespace *mnt_userns,
23 extern void ima_file_free(struct file *file);
24 extern int ima_file_mmap(struct file *file, unsigned long prot);
25 extern int ima_file_mprotect(struct vm_area_struct *vma, unsigned long prot);
26 extern int ima_load_data(enum kernel_load_data_id id, bool contents);
27 extern int ima_post_load_data(char *buf, loff_t size,
28 enum kernel_load_data_id id, char *description);
29 extern int ima_read_file(struct file *file, enum kernel_read_file_id id,
31 extern int ima_post_read_file(struct file *file, void *buf, loff_t size,
32 enum kernel_read_file_id id);
33 extern void ima_post_path_mknod(struct user_namespace *mnt_userns,
34 struct dentry *dentry);
35 extern int ima_file_hash(struct file *file, char *buf, size_t buf_size);
36 extern int ima_inode_hash(struct inode *inode, char *buf, size_t buf_size);
37 extern void ima_kexec_cmdline(int kernel_fd, const void *buf, int size);
38 extern int ima_measure_critical_data(const char *event_label,
39 const char *event_name,
40 const void *buf, size_t buf_len,
41 bool hash, u8 *digest, size_t digest_len);
43 #ifdef CONFIG_IMA_APPRAISE_BOOTPARAM
44 extern void ima_appraise_parse_cmdline(void);
46 static inline void ima_appraise_parse_cmdline(void) {}
49 #ifdef CONFIG_IMA_KEXEC
50 extern void ima_add_kexec_buffer(struct kimage *image);
54 static inline enum hash_algo ima_get_current_hash_algo(void)
56 return HASH_ALGO__LAST;
59 static inline int ima_bprm_check(struct linux_binprm *bprm)
64 static inline int ima_file_check(struct file *file, int mask)
69 static inline void ima_post_create_tmpfile(struct user_namespace *mnt_userns,
74 static inline void ima_file_free(struct file *file)
79 static inline int ima_file_mmap(struct file *file, unsigned long prot)
84 static inline int ima_file_mprotect(struct vm_area_struct *vma,
90 static inline int ima_load_data(enum kernel_load_data_id id, bool contents)
95 static inline int ima_post_load_data(char *buf, loff_t size,
96 enum kernel_load_data_id id,
102 static inline int ima_read_file(struct file *file, enum kernel_read_file_id id,
108 static inline int ima_post_read_file(struct file *file, void *buf, loff_t size,
109 enum kernel_read_file_id id)
114 static inline void ima_post_path_mknod(struct user_namespace *mnt_userns,
115 struct dentry *dentry)
120 static inline int ima_file_hash(struct file *file, char *buf, size_t buf_size)
125 static inline int ima_inode_hash(struct inode *inode, char *buf, size_t buf_size)
130 static inline void ima_kexec_cmdline(int kernel_fd, const void *buf, int size) {}
132 static inline int ima_measure_critical_data(const char *event_label,
133 const char *event_name,
134 const void *buf, size_t buf_len,
135 bool hash, u8 *digest,
141 #endif /* CONFIG_IMA */
143 #ifdef CONFIG_HAVE_IMA_KEXEC
144 int __init ima_free_kexec_buffer(void);
145 int __init ima_get_kexec_buffer(void **addr, size_t *size);
148 #ifdef CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT
149 extern bool arch_ima_get_secureboot(void);
150 extern const char * const *arch_get_ima_policy(void);
152 static inline bool arch_ima_get_secureboot(void)
157 static inline const char * const *arch_get_ima_policy(void)
163 #ifndef CONFIG_IMA_KEXEC
166 static inline void ima_add_kexec_buffer(struct kimage *image)
170 #ifdef CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS
171 extern void ima_post_key_create_or_update(struct key *keyring,
173 const void *payload, size_t plen,
174 unsigned long flags, bool create);
176 static inline void ima_post_key_create_or_update(struct key *keyring,
182 #endif /* CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS */
184 #ifdef CONFIG_IMA_APPRAISE
185 extern bool is_ima_appraise_enabled(void);
186 extern void ima_inode_post_setattr(struct user_namespace *mnt_userns,
187 struct dentry *dentry);
188 extern int ima_inode_setxattr(struct dentry *dentry, const char *xattr_name,
189 const void *xattr_value, size_t xattr_value_len);
190 extern int ima_inode_removexattr(struct dentry *dentry, const char *xattr_name);
192 static inline bool is_ima_appraise_enabled(void)
197 static inline void ima_inode_post_setattr(struct user_namespace *mnt_userns,
198 struct dentry *dentry)
203 static inline int ima_inode_setxattr(struct dentry *dentry,
204 const char *xattr_name,
205 const void *xattr_value,
206 size_t xattr_value_len)
211 static inline int ima_inode_removexattr(struct dentry *dentry,
212 const char *xattr_name)
216 #endif /* CONFIG_IMA_APPRAISE */
218 #if defined(CONFIG_IMA_APPRAISE) && defined(CONFIG_INTEGRITY_TRUSTED_KEYRING)
219 extern bool ima_appraise_signature(enum kernel_read_file_id func);
221 static inline bool ima_appraise_signature(enum kernel_read_file_id func)
225 #endif /* CONFIG_IMA_APPRAISE && CONFIG_INTEGRITY_TRUSTED_KEYRING */
226 #endif /* _LINUX_IMA_H */