forked from Minki/linux
6f52b16c5b
Many user space API headers are missing licensing information, which makes it hard for compliance tools to determine the correct license. By default are files without license information under the default license of the kernel, which is GPLV2. Marking them GPLV2 would exclude them from being included in non GPLV2 code, which is obviously not intended. The user space API headers fall under the syscall exception which is in the kernels COPYING file: NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". otherwise syscall usage would not be possible. Update the files which contain no license information with an SPDX license identifier. The chosen identifier is 'GPL-2.0 WITH Linux-syscall-note' which is the officially assigned identifier for the Linux syscall exception. SPDX license identifiers are a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. See the previous patch in this series for the methodology of how this patch was researched. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*************************************************************************
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*
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* enables user programs to display messages and control encryption
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* on s390 tape devices
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*
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* Copyright IBM Corp. 2001, 2006
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* Author(s): Michael Holzheu <holzheu@de.ibm.com>
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*
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*************************************************************************/
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#ifndef _TAPE390_H
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#define _TAPE390_H
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#define TAPE390_DISPLAY _IOW('d', 1, struct display_struct)
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/*
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* The TAPE390_DISPLAY ioctl calls the Load Display command
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* which transfers 17 bytes of data from the channel to the subsystem:
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* - 1 format control byte, and
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* - two 8-byte messages
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*
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* Format control byte:
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* 0-2: New Message Overlay
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* 3: Alternate Messages
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* 4: Blink Message
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* 5: Display Low/High Message
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* 6: Reserved
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* 7: Automatic Load Request
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*
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*/
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typedef struct display_struct {
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char cntrl;
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char message1[8];
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char message2[8];
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} display_struct;
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/*
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* Tape encryption support
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*/
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struct tape390_crypt_info {
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char capability;
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char status;
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char medium_status;
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} __attribute__ ((packed));
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/* Macros for "capable" field */
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#define TAPE390_CRYPT_SUPPORTED_MASK 0x01
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#define TAPE390_CRYPT_SUPPORTED(x) \
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((x.capability & TAPE390_CRYPT_SUPPORTED_MASK))
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/* Macros for "status" field */
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#define TAPE390_CRYPT_ON_MASK 0x01
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#define TAPE390_CRYPT_ON(x) (((x.status) & TAPE390_CRYPT_ON_MASK))
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/* Macros for "medium status" field */
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#define TAPE390_MEDIUM_LOADED_MASK 0x01
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#define TAPE390_MEDIUM_ENCRYPTED_MASK 0x02
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#define TAPE390_MEDIUM_ENCRYPTED(x) \
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(((x.medium_status) & TAPE390_MEDIUM_ENCRYPTED_MASK))
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#define TAPE390_MEDIUM_LOADED(x) \
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(((x.medium_status) & TAPE390_MEDIUM_LOADED_MASK))
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/*
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* The TAPE390_CRYPT_SET ioctl is used to switch on/off encryption.
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* The "encryption_capable" and "tape_status" fields are ignored for this ioctl!
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*/
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#define TAPE390_CRYPT_SET _IOW('d', 2, struct tape390_crypt_info)
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/*
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* The TAPE390_CRYPT_QUERY ioctl is used to query the encryption state.
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*/
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#define TAPE390_CRYPT_QUERY _IOR('d', 3, struct tape390_crypt_info)
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/* Values for "kekl1/2_type" and "kekl1/2_type_on_tape" fields */
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#define TAPE390_KEKL_TYPE_NONE 0
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#define TAPE390_KEKL_TYPE_LABEL 1
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#define TAPE390_KEKL_TYPE_HASH 2
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struct tape390_kekl {
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unsigned char type;
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unsigned char type_on_tape;
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char label[65];
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} __attribute__ ((packed));
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struct tape390_kekl_pair {
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struct tape390_kekl kekl[2];
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} __attribute__ ((packed));
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/*
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* The TAPE390_KEKL_SET ioctl is used to set Key Encrypting Key labels.
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*/
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#define TAPE390_KEKL_SET _IOW('d', 4, struct tape390_kekl_pair)
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/*
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* The TAPE390_KEKL_QUERY ioctl is used to query Key Encrypting Key labels.
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*/
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#define TAPE390_KEKL_QUERY _IOR('d', 5, struct tape390_kekl_pair)
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#endif
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