Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2005-2010 IBM Corporation
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*
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* Authors:
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* Mimi Zohar <zohar@us.ibm.com>
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* Kylene Hall <kjhall@us.ibm.com>
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*
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* File: evm.h
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*/
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#ifndef __INTEGRITY_EVM_H
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#define __INTEGRITY_EVM_H
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#include <linux/xattr.h>
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#include <linux/security.h>
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#include "../integrity.h"
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#define EVM_INIT_HMAC 0x0001
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#define EVM_INIT_X509 0x0002
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#define EVM_ALLOW_METADATA_WRITES 0x0004
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#define EVM_SETUP_COMPLETE 0x80000000 /* userland has signaled key load */
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#define EVM_KEY_MASK (EVM_INIT_HMAC | EVM_INIT_X509)
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#define EVM_INIT_MASK (EVM_INIT_HMAC | EVM_INIT_X509 | EVM_SETUP_COMPLETE | \
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EVM_ALLOW_METADATA_WRITES)
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struct xattr_list {
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struct list_head list;
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char *name;
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bool enabled;
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};
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#define EVM_NEW_FILE 0x00000001
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#define EVM_IMMUTABLE_DIGSIG 0x00000002
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/* EVM integrity metadata associated with an inode */
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struct evm_iint_cache {
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unsigned long flags;
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enum integrity_status evm_status:4;
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struct integrity_inode_attributes metadata_inode;
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};
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extern struct lsm_blob_sizes evm_blob_sizes;
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static inline struct evm_iint_cache *evm_iint_inode(const struct inode *inode)
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{
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if (unlikely(!inode->i_security))
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return NULL;
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return inode->i_security + evm_blob_sizes.lbs_inode;
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}
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extern int evm_initialized;
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#define EVM_ATTR_FSUUID 0x0001
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extern int evm_hmac_attrs;
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/* List of EVM protected security xattrs */
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extern struct list_head evm_config_xattrnames;
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struct evm_digest {
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struct ima_digest_data_hdr hdr;
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char digest[IMA_MAX_DIGEST_SIZE];
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} __packed;
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int evm_protected_xattr(const char *req_xattr_name);
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int evm_init_key(void);
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int evm_update_evmxattr(struct dentry *dentry,
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const char *req_xattr_name,
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const char *req_xattr_value,
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size_t req_xattr_value_len);
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int evm_calc_hmac(struct dentry *dentry, const char *req_xattr_name,
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const char *req_xattr_value,
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size_t req_xattr_value_len, struct evm_digest *data,
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struct evm_iint_cache *iint);
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int evm_calc_hash(struct dentry *dentry, const char *req_xattr_name,
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const char *req_xattr_value,
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size_t req_xattr_value_len, char type,
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struct evm_digest *data, struct evm_iint_cache *iint);
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int evm_init_hmac(struct inode *inode, const struct xattr *xattrs,
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char *hmac_val);
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int evm_init_secfs(void);
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#endif
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