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Implement zfs_ioc_recv_new() for OpenZFS 2605

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Adds ZFS_IOC_RECV_NEW for resumable streams and preserves the legacy
ZFS_IOC_RECV user/kernel interface.  The new interface supports all
stream options but is currently only used for resumable streams.
This way updated user space utilities will interoperate with older
kernel modules.

ZFS_IOC_RECV_NEW is modeled after the existing ZFS_IOC_SEND_NEW
handler.  Non-Linux OpenZFS platforms have opted to change the
legacy interface in an incompatible fashion instead of adding a
new ioctl.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf
2016-06-09 17:04:12 -07:00
parent 8c62a0d0f3
commit 43e52eddb1
6 changed files with 519 additions and 266 deletions
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include/sys/zfs_ioctl.h
+2 -3
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@@ -389,15 +389,14 @@ typedef struct zfs_cmd {
uint64_t zc_iflags; /* internal to zfs(7fs) */
zfs_share_t zc_share;
dmu_objset_stats_t zc_objset_stats;
dmu_replay_record_t zc_begin_record;
struct drr_begin zc_begin_record;
zinject_record_t zc_inject_record;
uint32_t zc_defer_destroy;
uint32_t zc_flags;
uint64_t zc_action_handle;
int zc_cleanup_fd;
uint8_t zc_simple;
boolean_t zc_resumable;
uint8_t zc_pad[2]; /* alignment */
uint8_t zc_pad[3]; /* alignment */
uint64_t zc_sendobj;
uint64_t zc_fromobj;
uint64_t zc_createtxg;