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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/libzfs_core.h
+3
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@@ -69,6 +69,9 @@ int lzc_receive_resumable(const char *, nvlist_t *, const char *,
boolean_t, int);
int lzc_receive_with_header(const char *, nvlist_t *, const char *, boolean_t,
boolean_t, int, const struct dmu_replay_record *);
int lzc_receive_one(const char *, nvlist_t *, const char *, boolean_t,
boolean_t, int, const struct dmu_replay_record *, int, uint64_t *,
uint64_t *, uint64_t *, nvlist_t **);
boolean_t lzc_exists(const char *);