1 /* 2 * Copyright (C) 2008 IBM Corporation 3 * Author: Mimi Zohar <[email protected]> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation, version 2 of the License. 8 */ 9 10 #ifndef _LINUX_IMA_H 11 #define _LINUX_IMA_H 12 13 #include <linux/fs.h> 14 #include <linux/security.h> 15 #include <linux/kexec.h> 16 struct linux_binprm; 17 18 #ifdef CONFIG_IMA 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_file_free(struct file *file); 22 extern int ima_file_mmap(struct file *file, unsigned long prot); 23 extern int ima_load_data(enum kernel_load_data_id id); 24 extern int ima_read_file(struct file *file, enum kernel_read_file_id id); 25 extern int ima_post_read_file(struct file *file, void *buf, loff_t size, 26 enum kernel_read_file_id id); 27 extern void ima_post_path_mknod(struct dentry *dentry); 28 29 #ifdef CONFIG_IMA_KEXEC 30 extern void ima_add_kexec_buffer(struct kimage *image); 31 #endif 32 33 #if defined(CONFIG_X86) && defined(CONFIG_EFI) 34 extern bool arch_ima_get_secureboot(void); 35 extern const char * const *arch_get_ima_policy(void); 36 #else 37 static inline bool arch_ima_get_secureboot(void) 38 { 39 return false; 40 } 41 42 static inline const char * const *arch_get_ima_policy(void) 43 { 44 return NULL; 45 } 46 #endif 47 48 #else 49 static inline int ima_bprm_check(struct linux_binprm *bprm) 50 { 51 return 0; 52 } 53 54 static inline int ima_file_check(struct file *file, int mask) 55 { 56 return 0; 57 } 58 59 static inline void ima_file_free(struct file *file) 60 { 61 return; 62 } 63 64 static inline int ima_file_mmap(struct file *file, unsigned long prot) 65 { 66 return 0; 67 } 68 69 static inline int ima_load_data(enum kernel_load_data_id id) 70 { 71 return 0; 72 } 73 74 static inline int ima_read_file(struct file *file, enum kernel_read_file_id id) 75 { 76 return 0; 77 } 78 79 static inline int ima_post_read_file(struct file *file, void *buf, loff_t size, 80 enum kernel_read_file_id id) 81 { 82 return 0; 83 } 84 85 static inline void ima_post_path_mknod(struct dentry *dentry) 86 { 87 return; 88 } 89 90 #endif /* CONFIG_IMA */ 91 92 #ifndef CONFIG_IMA_KEXEC 93 struct kimage; 94 95 static inline void ima_add_kexec_buffer(struct kimage *image) 96 {} 97 #endif 98 99 #ifdef CONFIG_IMA_APPRAISE 100 extern bool is_ima_appraise_enabled(void); 101 extern void ima_inode_post_setattr(struct dentry *dentry); 102 extern int ima_inode_setxattr(struct dentry *dentry, const char *xattr_name, 103 const void *xattr_value, size_t xattr_value_len); 104 extern int ima_inode_removexattr(struct dentry *dentry, const char *xattr_name); 105 #else 106 static inline bool is_ima_appraise_enabled(void) 107 { 108 return 0; 109 } 110 111 static inline void ima_inode_post_setattr(struct dentry *dentry) 112 { 113 return; 114 } 115 116 static inline int ima_inode_setxattr(struct dentry *dentry, 117 const char *xattr_name, 118 const void *xattr_value, 119 size_t xattr_value_len) 120 { 121 return 0; 122 } 123 124 static inline int ima_inode_removexattr(struct dentry *dentry, 125 const char *xattr_name) 126 { 127 return 0; 128 } 129 #endif /* CONFIG_IMA_APPRAISE */ 130 #endif /* _LINUX_IMA_H */ 131