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keyctl.h
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/* 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 */