xref: /openbmc/linux/arch/s390/include/asm/pkey.h (revision f370f45c)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Kernelspace interface to the pkey device driver
4  *
5  * Copyright IBM Corp. 2016, 2023
6  *
7  * Author: Harald Freudenberger <freude@de.ibm.com>
8  *
9  */
10 
11 #ifndef _KAPI_PKEY_H
12 #define _KAPI_PKEY_H
13 
14 #include <linux/ioctl.h>
15 #include <linux/types.h>
16 #include <uapi/asm/pkey.h>
17 
18 /*
19  * In-kernel API: Transform an key blob (of any type) into a protected key.
20  * @param key pointer to a buffer containing the key blob
21  * @param keylen size of the key blob in bytes
22  * @param protkey pointer to buffer receiving the protected key
23  * @return 0 on success, negative errno value on failure
24  */
25 int pkey_keyblob2pkey(const u8 *key, u32 keylen,
26 		      u8 *protkey, u32 *protkeylen, u32 *protkeytype);
27 
28 #endif /* _KAPI_PKEY_H */
29