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ea78979d30
As a result of the asymmetric public keys subtype Kconfig option being defined as tristate, with the existing IMA Makefile, ima_asymmetric_keys.c could be built as a kernel module. To prevent this from happening, this patch defines and uses an intermediate Kconfig boolean option named IMA_MEASURE_ASYMMETRIC_KEYS. Signed-off-by: Lakshmi Ramasubramanian <nramas@linux.microsoft.com> Suggested-by: James.Bottomley <James.Bottomley@HansenPartnership.com> Cc: David Howells <dhowells@redhat.com> Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reported-by: kbuild test robot <lkp@intel.com> # ima_asymmetric_keys.c is built as a kernel module. Fixes:88e70da170("IMA: Define an IMA hook to measure keys") Fixes:cb1aa3823c("KEYS: Call the IMA hook to measure keys") [zohar@linux.ibm.com: updated patch description] Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
159 lines
3.9 KiB
C
159 lines
3.9 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/fs.h>
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#include <linux/security.h>
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#include <linux/kexec.h>
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struct linux_binprm;
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#ifdef CONFIG_IMA
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extern int ima_bprm_check(struct linux_binprm *bprm);
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extern int ima_file_check(struct file *file, int mask);
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extern void ima_post_create_tmpfile(struct inode *inode);
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extern void ima_file_free(struct file *file);
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extern int ima_file_mmap(struct file *file, unsigned long prot);
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extern int ima_load_data(enum kernel_load_data_id id);
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extern int ima_read_file(struct file *file, enum kernel_read_file_id id);
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extern int ima_post_read_file(struct file *file, void *buf, loff_t size,
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enum kernel_read_file_id id);
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extern void ima_post_path_mknod(struct dentry *dentry);
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extern void ima_kexec_cmdline(const void *buf, int size);
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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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#if (defined(CONFIG_X86) && defined(CONFIG_EFI)) || defined(CONFIG_S390) \
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|| defined(CONFIG_PPC_SECURE_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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#else
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static inline int ima_bprm_check(struct linux_binprm *bprm)
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{
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return 0;
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}
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static inline int ima_file_check(struct file *file, int mask)
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{
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return 0;
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}
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static inline void ima_post_create_tmpfile(struct inode *inode)
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{
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}
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static inline void ima_file_free(struct file *file)
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{
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return;
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}
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static inline int ima_file_mmap(struct file *file, unsigned long prot)
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{
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return 0;
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}
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static inline int ima_load_data(enum kernel_load_data_id id)
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{
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return 0;
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}
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static inline int ima_read_file(struct file *file, enum kernel_read_file_id id)
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{
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return 0;
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}
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static inline int ima_post_read_file(struct file *file, void *buf, loff_t size,
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enum kernel_read_file_id id)
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{
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return 0;
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}
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static inline void ima_post_path_mknod(struct dentry *dentry)
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{
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return;
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}
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static inline void ima_kexec_cmdline(const void *buf, int size) {}
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#endif /* CONFIG_IMA */
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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_MEASURE_ASYMMETRIC_KEYS
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extern void ima_post_key_create_or_update(struct key *keyring,
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struct key *key,
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const void *payload, size_t plen,
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unsigned long flags, bool create);
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#else
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static inline void ima_post_key_create_or_update(struct key *keyring,
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struct key *key,
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const void *payload,
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size_t plen,
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unsigned long flags,
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bool create) {}
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#endif /* CONFIG_IMA_MEASURE_ASYMMETRIC_KEYS */
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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 dentry *dentry);
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extern int ima_inode_setxattr(struct dentry *dentry, const char *xattr_name,
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const void *xattr_value, size_t xattr_value_len);
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extern int ima_inode_removexattr(struct dentry *dentry, 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 dentry *dentry)
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{
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return;
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}
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static inline int ima_inode_setxattr(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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{
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return 0;
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}
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static inline int ima_inode_removexattr(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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#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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