200 lines
8.3 KiB
C
200 lines
8.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/* keyctl.h: keyctl command IDs
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*
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* Copyright (C) 2004, 2008 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_KEYCTL_H
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#define _LINUX_KEYCTL_H
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#include <linux/types.h>
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/*
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* Keyring permission grant definitions
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*/
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enum key_ace_subject_type {
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KEY_ACE_SUBJ_STANDARD = 0, /* subject is one of key_ace_standard_subject */
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nr__key_ace_subject_type
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};
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enum key_ace_standard_subject {
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KEY_ACE_EVERYONE = 0, /* Everyone, including owner and group */
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KEY_ACE_GROUP = 1, /* The key's group */
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KEY_ACE_OWNER = 2, /* The owner of the key */
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KEY_ACE_POSSESSOR = 3, /* Any process that possesses of the key */
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nr__key_ace_standard_subject
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};
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#define KEY_ACE_VIEW 0x00000001 /* Can describe the key */
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#define KEY_ACE_READ 0x00000002 /* Can read the key content */
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#define KEY_ACE_WRITE 0x00000004 /* Can update/modify the key content */
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#define KEY_ACE_SEARCH 0x00000008 /* Can find the key by search */
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#define KEY_ACE_LINK 0x00000010 /* Can make a link to the key */
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#define KEY_ACE_SET_SECURITY 0x00000020 /* Can set owner, group, ACL */
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#define KEY_ACE_INVAL 0x00000040 /* Can invalidate the key */
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#define KEY_ACE_REVOKE 0x00000080 /* Can revoke the key */
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#define KEY_ACE_JOIN 0x00000100 /* Can join keyring */
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#define KEY_ACE_CLEAR 0x00000200 /* Can clear keyring */
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#define KEY_ACE__PERMS 0xffffffff
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/*
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* Old-style permissions mask, deprecated in favour of ACL.
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*/
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#define KEY_POS_VIEW 0x01000000 /* possessor can view a key's attributes */
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#define KEY_POS_READ 0x02000000 /* possessor can read key payload / view keyring */
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#define KEY_POS_WRITE 0x04000000 /* possessor can update key payload / add link to keyring */
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#define KEY_POS_SEARCH 0x08000000 /* possessor can find a key in search / search a keyring */
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#define KEY_POS_LINK 0x10000000 /* possessor can create a link to a key/keyring */
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#define KEY_POS_SETATTR 0x20000000 /* possessor can set key attributes */
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#define KEY_POS_ALL 0x3f000000
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#define KEY_USR_VIEW 0x00010000 /* user permissions... */
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#define KEY_USR_READ 0x00020000
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#define KEY_USR_WRITE 0x00040000
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#define KEY_USR_SEARCH 0x00080000
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#define KEY_USR_LINK 0x00100000
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#define KEY_USR_SETATTR 0x00200000
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#define KEY_USR_ALL 0x003f0000
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#define KEY_GRP_VIEW 0x00000100 /* group permissions... */
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#define KEY_GRP_READ 0x00000200
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#define KEY_GRP_WRITE 0x00000400
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#define KEY_GRP_SEARCH 0x00000800
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#define KEY_GRP_LINK 0x00001000
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#define KEY_GRP_SETATTR 0x00002000
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#define KEY_GRP_ALL 0x00003f00
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#define KEY_OTH_VIEW 0x00000001 /* third party permissions... */
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#define KEY_OTH_READ 0x00000002
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#define KEY_OTH_WRITE 0x00000004
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#define KEY_OTH_SEARCH 0x00000008
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#define KEY_OTH_LINK 0x00000010
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#define KEY_OTH_SETATTR 0x00000020
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#define KEY_OTH_ALL 0x0000003f
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/* special process keyring shortcut IDs */
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#define KEY_SPEC_THREAD_KEYRING -1 /* - key ID for thread-specific keyring */
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#define KEY_SPEC_PROCESS_KEYRING -2 /* - key ID for process-specific keyring */
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#define KEY_SPEC_SESSION_KEYRING -3 /* - key ID for session-specific keyring */
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#define KEY_SPEC_USER_KEYRING -4 /* - key ID for UID-specific keyring */
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#define KEY_SPEC_USER_SESSION_KEYRING -5 /* - key ID for UID-session keyring */
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#define KEY_SPEC_GROUP_KEYRING -6 /* - key ID for GID-specific keyring */
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#define KEY_SPEC_REQKEY_AUTH_KEY -7 /* - key ID for assumed request_key auth key */
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#define KEY_SPEC_REQUESTOR_KEYRING -8 /* - key ID for request_key() dest keyring */
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/* request-key default keyrings */
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#define KEY_REQKEY_DEFL_NO_CHANGE -1
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#define KEY_REQKEY_DEFL_DEFAULT 0
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#define KEY_REQKEY_DEFL_THREAD_KEYRING 1
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#define KEY_REQKEY_DEFL_PROCESS_KEYRING 2
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#define KEY_REQKEY_DEFL_SESSION_KEYRING 3
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#define KEY_REQKEY_DEFL_USER_KEYRING 4
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#define KEY_REQKEY_DEFL_USER_SESSION_KEYRING 5
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#define KEY_REQKEY_DEFL_GROUP_KEYRING 6
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#define KEY_REQKEY_DEFL_REQUESTOR_KEYRING 7
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/* keyctl commands */
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#define KEYCTL_GET_KEYRING_ID 0 /* ask for a keyring's ID */
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#define KEYCTL_JOIN_SESSION_KEYRING 1 /* join or start named session keyring */
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#define KEYCTL_UPDATE 2 /* update a key */
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#define KEYCTL_REVOKE 3 /* revoke a key */
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#define KEYCTL_CHOWN 4 /* set ownership of a key */
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#define KEYCTL_SETPERM 5 /* set perms on a key */
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#define KEYCTL_DESCRIBE 6 /* describe a key */
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#define KEYCTL_CLEAR 7 /* clear contents of a keyring */
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#define KEYCTL_LINK 8 /* link a key into a keyring */
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#define KEYCTL_UNLINK 9 /* unlink a key from a keyring */
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#define KEYCTL_SEARCH 10 /* search for a key in a keyring */
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#define KEYCTL_READ 11 /* read a key or keyring's contents */
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#define KEYCTL_INSTANTIATE 12 /* instantiate a partially constructed key */
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#define KEYCTL_NEGATE 13 /* negate a partially constructed key */
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#define KEYCTL_SET_REQKEY_KEYRING 14 /* set default request-key keyring */
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#define KEYCTL_SET_TIMEOUT 15 /* set key timeout */
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#define KEYCTL_ASSUME_AUTHORITY 16 /* assume request_key() authorisation */
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#define KEYCTL_GET_SECURITY 17 /* get key security label */
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#define KEYCTL_SESSION_TO_PARENT 18 /* apply session keyring to parent process */
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#define KEYCTL_REJECT 19 /* reject a partially constructed key */
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#define KEYCTL_INSTANTIATE_IOV 20 /* instantiate a partially constructed key */
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#define KEYCTL_INVALIDATE 21 /* invalidate a key */
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#define KEYCTL_GET_PERSISTENT 22 /* get a user's persistent keyring */
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#define KEYCTL_DH_COMPUTE 23 /* Compute Diffie-Hellman values */
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#define KEYCTL_PKEY_QUERY 24 /* Query public key parameters */
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#define KEYCTL_PKEY_ENCRYPT 25 /* Encrypt a blob using a public key */
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#define KEYCTL_PKEY_DECRYPT 26 /* Decrypt a blob using a public key */
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#define KEYCTL_PKEY_SIGN 27 /* Create a public key signature */
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#define KEYCTL_PKEY_VERIFY 28 /* Verify a public key signature */
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#define KEYCTL_RESTRICT_KEYRING 29 /* Restrict keys allowed to link to a keyring */
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#define KEYCTL_MOVE 30 /* Move keys between keyrings */
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#define KEYCTL_CAPABILITIES 31 /* Find capabilities of keyrings subsystem */
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#define KEYCTL_GRANT_PERMISSION 32 /* Grant a permit to a key */
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/* keyctl structures */
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struct keyctl_dh_params {
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union {
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#ifndef __cplusplus
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__s32 private;
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#endif
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__s32 priv;
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};
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__s32 prime;
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__s32 base;
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};
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struct keyctl_kdf_params {
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char __user *hashname;
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char __user *otherinfo;
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__u32 otherinfolen;
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__u32 __spare[8];
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};
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#define KEYCTL_SUPPORTS_ENCRYPT 0x01
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#define KEYCTL_SUPPORTS_DECRYPT 0x02
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#define KEYCTL_SUPPORTS_SIGN 0x04
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#define KEYCTL_SUPPORTS_VERIFY 0x08
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struct keyctl_pkey_query {
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__u32 supported_ops; /* Which ops are supported */
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__u32 key_size; /* Size of the key in bits */
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__u16 max_data_size; /* Maximum size of raw data to sign in bytes */
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__u16 max_sig_size; /* Maximum size of signature in bytes */
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__u16 max_enc_size; /* Maximum size of encrypted blob in bytes */
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__u16 max_dec_size; /* Maximum size of decrypted blob in bytes */
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__u32 __spare[10];
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};
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struct keyctl_pkey_params {
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__s32 key_id; /* Serial no. of public key to use */
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__u32 in_len; /* Input data size */
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union {
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__u32 out_len; /* Output buffer size (encrypt/decrypt/sign) */
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__u32 in2_len; /* 2nd input data size (verify) */
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};
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__u32 __spare[7];
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};
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#define KEYCTL_MOVE_EXCL 0x00000001 /* Do not displace from the to-keyring */
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/*
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* Capabilities flags. The capabilities list is an array of 8-bit integers;
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* each integer can carry up to 8 flags.
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*/
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#define KEYCTL_CAPS0_CAPABILITIES 0x01 /* KEYCTL_CAPABILITIES supported */
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#define KEYCTL_CAPS0_PERSISTENT_KEYRINGS 0x02 /* Persistent keyrings enabled */
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#define KEYCTL_CAPS0_DIFFIE_HELLMAN 0x04 /* Diffie-Hellman computation enabled */
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#define KEYCTL_CAPS0_PUBLIC_KEY 0x08 /* Public key ops enabled */
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#define KEYCTL_CAPS0_BIG_KEY 0x10 /* big_key-type enabled */
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#define KEYCTL_CAPS0_INVALIDATE 0x20 /* KEYCTL_INVALIDATE supported */
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#define KEYCTL_CAPS0_RESTRICT_KEYRING 0x40 /* KEYCTL_RESTRICT_KEYRING supported */
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#define KEYCTL_CAPS0_MOVE 0x80 /* KEYCTL_MOVE supported */
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#define KEYCTL_CAPS1_NS_KEYRING_NAME 0x01 /* Keyring names are per-user_namespace */
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#define KEYCTL_CAPS1_NS_KEY_TAG 0x02 /* Key indexing can include a namespace tag */
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#define KEYCTL_CAPS1_ACL_ALTERABLE 0x04 /* Keys have internal ACL that can be altered */
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#endif /* _LINUX_KEYCTL_H */
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