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Merge 30c2ed3096 into 1713aa7b4d

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Rob Norris 2024-09-11 18:05:34 +08:00 committed by GitHub
parent 1713aa7b4d 30c2ed3096
commit e038377438
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1 changed files with 30 additions and 34 deletions
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64
include/sys/zfs_ioctl.h
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@ -70,10 +70,36 @@ extern "C" {
#define ZFS_ACLTYPE_POSIX 1 #define ZFS_ACLTYPE_POSIX 1
#define ZFS_ACLTYPE_NFSV4 2 #define ZFS_ACLTYPE_NFSV4 2
/*
* The drr_versioninfo field of the dmu_replay_record has the
* following layout:
*
* 64 56 48 40 32 24 16 8 0
* +-------+-------+-------+-------+-------+-------+-------+-------+
* |reserve| feature-flags |C|S|
* +-------+-------+-------+-------+-------+-------+-------+-------+
*
* The low order two bits indicate the header type: SUBSTREAM (0x1)
* or COMPOUNDSTREAM (0x2). Using two bits for this is historical:
* this field used to be a version number, where the two version types
* were 1 and 2. Using two bits for this allows earlier versions of
* the code to be able to recognize send streams that don't use any
* of the features indicated by feature flags.
*
* The top 8 bits are reserved for future expansion. At time of writing there
* are no plans for these. If you want to use them, please reach out to the
* OpenZFS community, e.g., on GitHub or Slack.
*/
/* /*
* Field manipulation macros for the drr_versioninfo field of the * Field manipulation macros for the drr_versioninfo field of the
* send stream header. * send stream header.
*/ */
#define DMU_GET_STREAM_HDRTYPE(vi) BF64_GET((vi), 0, 2)
#define DMU_SET_STREAM_HDRTYPE(vi, x) BF64_SET((vi), 0, 2, x)
#define DMU_GET_FEATUREFLAGS(vi) BF64_GET((vi), 2, 54)
#define DMU_SET_FEATUREFLAGS(vi, x) BF64_SET((vi), 2, 54, x)
/* /*
* Header types for zfs send streams. * Header types for zfs send streams.
@ -83,16 +109,9 @@ typedef enum drr_headertype {
DMU_COMPOUNDSTREAM = 0x2 DMU_COMPOUNDSTREAM = 0x2
} drr_headertype_t; } drr_headertype_t;
#define DMU_GET_STREAM_HDRTYPE(vi) BF64_GET((vi), 0, 2)
#define DMU_SET_STREAM_HDRTYPE(vi, x) BF64_SET((vi), 0, 2, x)
#define DMU_GET_FEATUREFLAGS(vi) BF64_GET((vi), 2, 30)
#define DMU_SET_FEATUREFLAGS(vi, x) BF64_SET((vi), 2, 30, x)
/* /*
* Feature flags for zfs send streams (flags in drr_versioninfo) * Feature flags for zfs send streams (flags in drr_versioninfo)
*/ */
#define DMU_BACKUP_FEATURE_DEDUP (1 << 0) #define DMU_BACKUP_FEATURE_DEDUP (1 << 0)
#define DMU_BACKUP_FEATURE_DEDUPPROPS (1 << 1) #define DMU_BACKUP_FEATURE_DEDUPPROPS (1 << 1)
#define DMU_BACKUP_FEATURE_SA_SPILL (1 << 2) #define DMU_BACKUP_FEATURE_SA_SPILL (1 << 2)
@ -125,12 +144,6 @@ typedef enum drr_headertype {
*/ */
#define DMU_BACKUP_FEATURE_SWITCH_TO_LARGE_BLOCKS (1 << 27) #define DMU_BACKUP_FEATURE_SWITCH_TO_LARGE_BLOCKS (1 << 27)
/* flag #28 is reserved for a Nutanix feature */ /* flag #28 is reserved for a Nutanix feature */
/*
* flag #29 is the last unused bit. It is reserved to indicate a to-be-designed
* extension to the stream format which will accomodate more feature flags.
* If you need to add another feature flag, please reach out to the OpenZFS
* community, e.g., on GitHub or Slack.
*/
/* /*
* Mask of all supported backup features * Mask of all supported backup features
@ -150,23 +163,6 @@ typedef enum dmu_send_resume_token_version {
ZFS_SEND_RESUME_TOKEN_VERSION = 1 ZFS_SEND_RESUME_TOKEN_VERSION = 1
} dmu_send_resume_token_version_t; } dmu_send_resume_token_version_t;
/*
* The drr_versioninfo field of the dmu_replay_record has the
* following layout:
*
* 64 56 48 40 32 24 16 8 0
* +-------+-------+-------+-------+-------+-------+-------+-------+
* | reserved | feature-flags |C|S|
* +-------+-------+-------+-------+-------+-------+-------+-------+
*
* The low order two bits indicate the header type: SUBSTREAM (0x1)
* or COMPOUNDSTREAM (0x2). Using two bits for this is historical:
* this field used to be a version number, where the two version types
* were 1 and 2. Using two bits for this allows earlier versions of
* the code to be able to recognize send streams that don't use any
* of the features indicated by feature flags.
*/
#define DMU_BACKUP_MAGIC 0x2F5bacbacULL #define DMU_BACKUP_MAGIC 0x2F5bacbacULL
/* /*
@ -230,10 +226,6 @@ typedef enum dmu_send_resume_token_version {
((drro)->drr_raw_bonuslen != 0 ? \ ((drro)->drr_raw_bonuslen != 0 ? \
(drro)->drr_raw_bonuslen : P2ROUNDUP((drro)->drr_bonuslen, 8)) (drro)->drr_raw_bonuslen : P2ROUNDUP((drro)->drr_bonuslen, 8))
/*
* zfs ioctl command structure
*/
/* Header is used in C++ so can't forward declare untagged struct */ /* Header is used in C++ so can't forward declare untagged struct */
struct drr_begin { struct drr_begin {
uint64_t drr_magic; uint64_t drr_magic;
@ -477,6 +469,10 @@ typedef enum zfs_case {
ZFS_CASE_MIXED ZFS_CASE_MIXED
} zfs_case_t; } zfs_case_t;
/*
* zfs ioctl command structure
*/
/* /*
* Note: this struct must have the same layout in 32-bit and 64-bit, so * Note: this struct must have the same layout in 32-bit and 64-bit, so
* that 32-bit processes (like /sbin/zfs) can pass it to the 64-bit * that 32-bit processes (like /sbin/zfs) can pass it to the 64-bit