/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/* keyctl.h: keyctl command IDs
*
* Copyright (C) 2004, 2008 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _LINUX_KEYCTL_H
#define _LINUX_KEYCTL_H
#include <linux/types.h>
/* special process keyring shortcut IDs */
#define KEY_SPEC_THREAD_KEYRING -1 /* - key ID for thread-specific keyring */
#define KEY_SPEC_PROCESS_KEYRING -2 /* - key ID for process-specific keyring */
#define KEY_SPEC_SESSION_KEYRING -3 /* - key ID for session-specific keyring */
#define KEY_SPEC_USER_KEYRING -4 /* - key ID for UID-specific keyring */
#define KEY_SPEC_USER_SESSION_KEYRING -5 /* - key ID for UID-session keyring */
#define KEY_SPEC_GROUP_KEYRING -6 /* - key ID for GID-specific keyring */
#define KEY_SPEC_REQKEY_AUTH_KEY -7 /* - key ID for assumed request_key auth key */
#define KEY_SPEC_REQUESTOR_KEYRING -8 /* - key ID for request_key() dest keyring */
/* request-key default keyrings */
#define KEY_REQKEY_DEFL_NO_CHANGE -1
#define KEY_REQKEY_DEFL_DEFAULT 0
#define KEY_REQKEY_DEFL_THREAD_KEYRING 1
#define KEY_REQKEY_DEFL_PROCESS_KEYRING 2
#define KEY_REQKEY_DEFL_SESSION_KEYRING 3
#define KEY_REQKEY_DEFL_USER_KEYRING 4
#define KEY_REQKEY_DEFL_USER_SESSION_KEYRING 5
#define KEY_REQKEY_DEFL_GROUP_KEYRING 6
#define KEY_REQKEY_DEFL_REQUESTOR_KEYRING 7
/* keyctl commands */
#define KEYCTL_GET_KEYRING_ID 0 /* ask for a keyring's ID */
#define KEYCTL_JOIN_SESSION_KEYRING 1 /* join or start named session keyring */
#define KEYCTL_UPDATE 2 /* update a key */
#define KEYCTL_REVOKE 3 /* revoke a key */
#define KEYCTL_CHOWN 4 /* set ownership of a key */
#define KEYCTL_SETPERM 5 /* set perms on a key */
#define KEYCTL_DESCRIBE 6 /* describe a key */
#define KEYCTL_CLEAR 7 /* clear contents of a keyring */
#define KEYCTL_LINK 8 /* link a key into a keyring */
#define KEYCTL_UNLINK 9 /* unlink a key from a keyring */
#define KEYCTL_SEARCH 10 /* search for a key in a keyring */
#define KEYCTL_READ 11 /* read a key or keyring's contents */
#define KEYCTL_INSTANTIATE 12 /* instantiate a partially constructed key */
#define KEYCTL_NEGATE 13 /* negate a partially constructed key */
#define KEYCTL_SET_REQKEY_KEYRING 14 /* set default request-key keyring */
#define KEYCTL_SET_TIMEOUT 15 /* set key timeout */
#define KEYCTL_ASSUME_AUTHORITY 16 /* assume request_key() authorisation */
#define KEYCTL_GET_SECURITY 17 /* get key security label */
#define KEYCTL_SESSION_TO_PARENT 18 /* apply session keyring to parent process */
#define KEYCTL_REJECT 19 /* reject a partially constructed key */
#define KEYCTL_INSTANTIATE_IOV 20 /* instantiate a partially constructed key */
#define KEYCTL_INVALIDATE 21 /* invalidate a key */
#define KEYCTL_GET_PERSISTENT 22 /* get a user's persistent keyring */
#define KEYCTL_DH_COMPUTE 23 /* Compute Diffie-Hellman values */
#define KEYCTL_PKEY_QUERY 24 /* Query public key parameters */
#define KEYCTL_PKEY_ENCRYPT 25 /* Encrypt a blob using a public key */
#define KEYCTL_PKEY_DECRYPT 26 /* Decrypt a blob using a public key */
#define KEYCTL_PKEY_SIGN 27 /* Create a public key signature */
#define KEYCTL_PKEY_VERIFY 28 /* Verify a public key signature */
#define KEYCTL_RESTRICT_KEYRING 29 /* Restrict keys allowed to link to a keyring */
#define KEYCTL_MOVE 30 /* Move keys between keyrings */
#define KEYCTL_CAPABILITIES 31 /* Find capabilities of keyrings subsystem */
#define KEYCTL_WATCH_KEY 32 /* Watch a key or ring of keys for changes */
/* keyctl structures */
struct keyctl_dh_params {
union {
#ifndef __cplusplus
__s32 private;
#endif
__s32 priv;
};
__s32 prime;
__s32 base;
};
struct keyctl_kdf_params {
char *hashname;
char *otherinfo;
__u32 otherinfolen;
__u32 __spare[8];
};
#define KEYCTL_SUPPORTS_ENCRYPT 0x01
#define KEYCTL_SUPPORTS_DECRYPT 0x02
#define KEYCTL_SUPPORTS_SIGN 0x04
#define KEYCTL_SUPPORTS_VERIFY 0x08
struct keyctl_pkey_query {
__u32 supported_ops; /* Which ops are supported */
__u32 key_size; /* Size of the key in bits */
__u16 max_data_size; /* Maximum size of raw data to sign in bytes */
__u16 max_sig_size; /* Maximum size of signature in bytes */
__u16 max_enc_size; /* Maximum size of encrypted blob in bytes */
__u16 max_dec_size; /* Maximum size of decrypted blob in bytes */
__u32 __spare[10];
};
struct keyctl_pkey_params {
__s32 key_id; /* Serial no. of public key to use */
__u32 in_len; /* Input data size */
union {
__u32 out_len; /* Output buffer size (encrypt/decrypt/sign) */
__u32 in2_len; /* 2nd input data size (verify) */
};
__u32 __spare[7];
};
#define KEYCTL_MOVE_EXCL 0x00000001 /* Do not displace from the to-keyring */
/*
* Capabilities flags. The capabilities list is an array of 8-bit integers;
* each integer can carry up to 8 flags.
*/
#define KEYCTL_CAPS0_CAPABILITIES 0x01 /* KEYCTL_CAPABILITIES supported */
#define KEYCTL_CAPS0_PERSISTENT_KEYRINGS 0x02 /* Persistent keyrings enabled */
#define KEYCTL_CAPS0_DIFFIE_HELLMAN 0x04 /* Diffie-Hellman computation enabled */
#define KEYCTL_CAPS0_PUBLIC_KEY 0x08 /* Public key ops enabled */
#define KEYCTL_CAPS0_BIG_KEY 0x10 /* big_key-type enabled */
#define KEYCTL_CAPS0_INVALIDATE 0x20 /* KEYCTL_INVALIDATE supported */
#define KEYCTL_CAPS0_RESTRICT_KEYRING 0x40 /* KEYCTL_RESTRICT_KEYRING supported */
#define KEYCTL_CAPS0_MOVE 0x80 /* KEYCTL_MOVE supported */
#define KEYCTL_CAPS1_NS_KEYRING_NAME 0x01 /* Keyring names are per-user_namespace */
#define KEYCTL_CAPS1_NS_KEY_TAG 0x02 /* Key indexing can include a namespace tag */
#define KEYCTL_CAPS1_NOTIFICATIONS 0x04 /* Keys generate watchable notifications */
#endif /* _LINUX_KEYCTL_H */
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