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File Content: `tape390.h`

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*************************************************************************
 *
 *	   enables user programs to display messages and control encryption
 *	   on s390 tape devices
 *
 *	   Copyright IBM Corp. 2001, 2006
 *	   Author(s): Michael Holzheu <holzheu@de.ibm.com>
 *
 *************************************************************************/

#ifndef _TAPE390_H
#define _TAPE390_H

#define TAPE390_DISPLAY _IOW('d', 1, struct display_struct)

/*
 * The TAPE390_DISPLAY ioctl calls the Load Display command
 * which transfers 17 bytes of data from the channel to the subsystem:
 *     - 1 format control byte, and
 *     - two 8-byte messages
 *
 * Format control byte:
 *   0-2: New Message Overlay
 *     3: Alternate Messages
 *     4: Blink Message
 *     5: Display Low/High Message
 *     6: Reserved
 *     7: Automatic Load Request
 *
 */

typedef struct display_struct {
        char cntrl;
        char message1[8];
        char message2[8];
} display_struct;

/*
 * Tape encryption support
 */

struct tape390_crypt_info {
	char capability;
	char status;
	char medium_status;
} __attribute__ ((packed));


/* Macros for "capable" field */
#define TAPE390_CRYPT_SUPPORTED_MASK 0x01
#define TAPE390_CRYPT_SUPPORTED(x) \
	((x.capability & TAPE390_CRYPT_SUPPORTED_MASK))

/* Macros for "status" field */
#define TAPE390_CRYPT_ON_MASK 0x01
#define TAPE390_CRYPT_ON(x) (((x.status) & TAPE390_CRYPT_ON_MASK))

/* Macros for "medium status" field */
#define TAPE390_MEDIUM_LOADED_MASK 0x01
#define TAPE390_MEDIUM_ENCRYPTED_MASK 0x02
#define TAPE390_MEDIUM_ENCRYPTED(x) \
	(((x.medium_status) & TAPE390_MEDIUM_ENCRYPTED_MASK))
#define TAPE390_MEDIUM_LOADED(x) \
	(((x.medium_status) & TAPE390_MEDIUM_LOADED_MASK))

/*
 * The TAPE390_CRYPT_SET ioctl is used to switch on/off encryption.
 * The "encryption_capable" and "tape_status" fields are ignored for this ioctl!
 */
#define TAPE390_CRYPT_SET _IOW('d', 2, struct tape390_crypt_info)

/*
 * The TAPE390_CRYPT_QUERY ioctl is used to query the encryption state.
 */
#define TAPE390_CRYPT_QUERY _IOR('d', 3, struct tape390_crypt_info)

/* Values for "kekl1/2_type" and "kekl1/2_type_on_tape" fields */
#define TAPE390_KEKL_TYPE_NONE 0
#define TAPE390_KEKL_TYPE_LABEL 1
#define TAPE390_KEKL_TYPE_HASH 2

struct tape390_kekl {
	unsigned char type;
	unsigned char type_on_tape;
	char label[65];
} __attribute__ ((packed));

struct tape390_kekl_pair {
	struct tape390_kekl kekl[2];
} __attribute__ ((packed));

/*
 * The TAPE390_KEKL_SET ioctl is used to set Key Encrypting Key labels.
 */
#define TAPE390_KEKL_SET _IOW('d', 4, struct tape390_kekl_pair)

/*
 * The TAPE390_KEKL_QUERY ioctl is used to query Key Encrypting Key labels.
 */
#define TAPE390_KEKL_QUERY _IOR('d', 5, struct tape390_kekl_pair)

#endif

Name	Size	Permission
Kbuild	90 bytes	0644
auxvec.h	214 bytes	0644
bitsperlong.h	293 bytes	0644
bpf_perf_event.h	250 bytes	0644
byteorder.h	188 bytes	0644
chpid.h	456 bytes	0644
chsc.h	2903 bytes	0644
clp.h	549 bytes	0644
cmb.h	1919 bytes	0644
dasd.h	12658 bytes	0644
guarded_storage.h	1208 bytes	0644
hwctrset.h	1689 bytes	0644
hypfs.h	1382 bytes	0644
ioctls.h	191 bytes	0644
ipcbuf.h	770 bytes	0644
ipl.h	3297 bytes	0644
kvm.h	8269 bytes	0644
kvm_para.h	224 bytes	0644
kvm_perf.h	474 bytes	0644
monwriter.h	939 bytes	0644
perf_regs.h	887 bytes	0644
pkey.h	20741 bytes	0644
posix_types.h	1594 bytes	0644
ptrace.h	11719 bytes	0644
qeth.h	3119 bytes	0644
runtime_instr.h	1424 bytes	0644
schid.h	380 bytes	0644
sclp_ctl.h	465 bytes	0644
setup.h	256 bytes	0644
sie.h	9469 bytes	0644
sigcontext.h	1772 bytes	0644
signal.h	3056 bytes	0644
stat.h	2966 bytes	0644
statfs.h	1058 bytes	0644
sthyi.h	178 bytes	0644
tape390.h	2830 bytes	0644
termios.h	1170 bytes	0644
types.h	525 bytes	0644
ucontext.h	1207 bytes	0644
unistd.h	326 bytes	0644
uvdevice.h	1668 bytes	0644
virtio-ccw.h	444 bytes	0644
vmcp.h	737 bytes	0644
vtoc.h	7539 bytes	0644
zcrypt.h	11426 bytes	0644

File Content: tape390.h

File Content: `tape390.h`