Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _UAPI_PR_H
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#define _UAPI_PR_H
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#include <linux/types.h>
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enum pr_status {
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PR_STS_SUCCESS = 0x0,
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/*
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* The following error codes are based on SCSI, because the interface
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* was originally created for it and has existing users.
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*/
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/* Generic device failure. */
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PR_STS_IOERR = 0x2,
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PR_STS_RESERVATION_CONFLICT = 0x18,
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/* Temporary path failure that can be retried. */
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PR_STS_RETRY_PATH_FAILURE = 0xe0000,
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/* The request was failed due to a fast failure timer. */
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PR_STS_PATH_FAST_FAILED = 0xf0000,
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/* The path cannot be reached and has been marked as failed. */
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PR_STS_PATH_FAILED = 0x10000,
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};
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enum pr_type {
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PR_WRITE_EXCLUSIVE = 1,
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PR_EXCLUSIVE_ACCESS = 2,
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PR_WRITE_EXCLUSIVE_REG_ONLY = 3,
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PR_EXCLUSIVE_ACCESS_REG_ONLY = 4,
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PR_WRITE_EXCLUSIVE_ALL_REGS = 5,
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PR_EXCLUSIVE_ACCESS_ALL_REGS = 6,
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};
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struct pr_reservation {
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__u64 key;
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__u32 type;
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__u32 flags;
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};
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struct pr_registration {
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__u64 old_key;
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__u64 new_key;
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__u32 flags;
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__u32 __pad;
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};
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struct pr_preempt {
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__u64 old_key;
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__u64 new_key;
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__u32 type;
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__u32 flags;
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};
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struct pr_clear {
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__u64 key;
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__u32 flags;
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__u32 __pad;
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};
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struct pr_read_keys {
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__u32 generation;
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__u32 num_keys;
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__u64 keys_ptr;
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};
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struct pr_read_reservation {
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__u64 key;
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__u32 generation;
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__u32 type;
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};
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#define PR_FL_IGNORE_KEY (1 << 0) /* ignore existing key */
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#define IOC_PR_REGISTER _IOW('p', 200, struct pr_registration)
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#define IOC_PR_RESERVE _IOW('p', 201, struct pr_reservation)
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#define IOC_PR_RELEASE _IOW('p', 202, struct pr_reservation)
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#define IOC_PR_PREEMPT _IOW('p', 203, struct pr_preempt)
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#define IOC_PR_PREEMPT_ABORT _IOW('p', 204, struct pr_preempt)
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#define IOC_PR_CLEAR _IOW('p', 205, struct pr_clear)
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#define IOC_PR_READ_KEYS _IOWR('p', 206, struct pr_read_keys)
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#define IOC_PR_READ_RESERVATION _IOR('p', 207, struct pr_read_reservation)
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#define PR_KEYS_MAX (1u << 16)
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#endif /* _UAPI_PR_H */
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