166 lines
4.2 KiB
C
166 lines
4.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2008 IBM Corporation
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* Author: Mimi Zohar <zohar@us.ibm.com>
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*/
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#ifndef _LINUX_IMA_H
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#define _LINUX_IMA_H
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#include <linux/kernel_read_file.h>
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#include <linux/fs.h>
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#include <linux/security.h>
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#include <linux/kexec.h>
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#include <crypto/hash_info.h>
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struct linux_binprm;
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#ifdef CONFIG_IMA
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extern enum hash_algo ima_get_current_hash_algo(void);
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extern int ima_file_hash(struct file *file, char *buf, size_t buf_size);
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extern int ima_inode_hash(struct inode *inode, char *buf, size_t buf_size);
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extern void ima_kexec_cmdline(int kernel_fd, const void *buf, int size);
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extern int ima_measure_critical_data(const char *event_label,
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const char *event_name,
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const void *buf, size_t buf_len,
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bool hash, u8 *digest, size_t digest_len);
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#ifdef CONFIG_IMA_APPRAISE_BOOTPARAM
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extern void ima_appraise_parse_cmdline(void);
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#else
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static inline void ima_appraise_parse_cmdline(void) {}
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#endif
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#ifdef CONFIG_IMA_KEXEC
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extern void ima_add_kexec_buffer(struct kimage *image);
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#endif
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#else
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static inline enum hash_algo ima_get_current_hash_algo(void)
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{
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return HASH_ALGO__LAST;
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}
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static inline int ima_file_hash(struct file *file, char *buf, size_t buf_size)
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{
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return -EOPNOTSUPP;
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}
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static inline int ima_inode_hash(struct inode *inode, char *buf, size_t buf_size)
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{
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return -EOPNOTSUPP;
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}
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static inline void ima_kexec_cmdline(int kernel_fd, const void *buf, int size) {}
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static inline int ima_measure_critical_data(const char *event_label,
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const char *event_name,
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const void *buf, size_t buf_len,
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bool hash, u8 *digest,
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size_t digest_len)
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{
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return -ENOENT;
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}
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#endif /* CONFIG_IMA */
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#ifdef CONFIG_HAVE_IMA_KEXEC
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int __init ima_free_kexec_buffer(void);
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int __init ima_get_kexec_buffer(void **addr, size_t *size);
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#endif
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#ifdef CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT
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extern bool arch_ima_get_secureboot(void);
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extern const char * const *arch_get_ima_policy(void);
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#else
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static inline bool arch_ima_get_secureboot(void)
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{
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return false;
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}
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static inline const char * const *arch_get_ima_policy(void)
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{
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return NULL;
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}
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#endif
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#ifndef CONFIG_IMA_KEXEC
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struct kimage;
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static inline void ima_add_kexec_buffer(struct kimage *image)
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{}
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#endif
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#ifdef CONFIG_IMA_APPRAISE
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extern bool is_ima_appraise_enabled(void);
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extern void ima_inode_post_setattr(struct mnt_idmap *idmap,
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struct dentry *dentry, int ia_valid);
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extern int ima_inode_setxattr(struct mnt_idmap *idmap, struct dentry *dentry,
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const char *xattr_name, const void *xattr_value,
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size_t xattr_value_len, int flags);
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extern int ima_inode_set_acl(struct mnt_idmap *idmap,
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struct dentry *dentry, const char *acl_name,
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struct posix_acl *kacl);
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static inline int ima_inode_remove_acl(struct mnt_idmap *idmap,
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struct dentry *dentry,
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const char *acl_name)
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{
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return ima_inode_set_acl(idmap, dentry, acl_name, NULL);
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}
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extern int ima_inode_removexattr(struct mnt_idmap *idmap, struct dentry *dentry,
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const char *xattr_name);
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#else
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static inline bool is_ima_appraise_enabled(void)
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{
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return 0;
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}
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static inline void ima_inode_post_setattr(struct mnt_idmap *idmap,
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struct dentry *dentry, int ia_valid)
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{
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return;
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}
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static inline int ima_inode_setxattr(struct mnt_idmap *idmap,
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struct dentry *dentry,
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const char *xattr_name,
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const void *xattr_value,
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size_t xattr_value_len,
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int flags)
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{
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return 0;
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}
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static inline int ima_inode_set_acl(struct mnt_idmap *idmap,
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struct dentry *dentry, const char *acl_name,
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struct posix_acl *kacl)
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{
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return 0;
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}
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static inline int ima_inode_removexattr(struct mnt_idmap *idmap,
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struct dentry *dentry,
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const char *xattr_name)
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{
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return 0;
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}
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static inline int ima_inode_remove_acl(struct mnt_idmap *idmap,
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struct dentry *dentry,
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const char *acl_name)
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{
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return 0;
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}
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#endif /* CONFIG_IMA_APPRAISE */
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#if defined(CONFIG_IMA_APPRAISE) && defined(CONFIG_INTEGRITY_TRUSTED_KEYRING)
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extern bool ima_appraise_signature(enum kernel_read_file_id func);
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#else
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static inline bool ima_appraise_signature(enum kernel_read_file_id func)
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{
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return false;
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}
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#endif /* CONFIG_IMA_APPRAISE && CONFIG_INTEGRITY_TRUSTED_KEYRING */
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#endif /* _LINUX_IMA_H */
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