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Add ZFS_IOC offsets for FreeBSD

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FreeBSD requires three additional ioctls, they are ZFS_IOC_NEXTBOOT,
ZFS_IOC_JAIL, and ZFS_IOC_UNJAIL.  These have been added after the
Linux-specific ioctls.  The range 0x80-0xFF has been reserved for 
future optional platform-specific ioctls.  Any platform may choose
to implement these as appropriate.

None of the existing ioctl numbers have been changed to maintain
compatibility.  For Linux no vectors have been registered for the
new ioctls and they are reported as unsupported.

Reviewed-by: Jorgen Lundman <lundman@lundman.net>
Reviewed-by: Allan Jude <allanjude@freebsd.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #9667
This commit is contained in:
Matthew Macy
2019-12-05 13:06:51 -08:00
committed by Brian Behlendorf
parent e64e84eca5
commit 054a049841
2 changed files with 31 additions and 21 deletions
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include/sys/fs/zfs.h
+13 -12
View File
@@ -1190,9 +1190,13 @@ typedef enum {
*/
typedef enum zfs_ioc {
/*
* illumos - 81/128 numbers reserved.
* Core features - 81/128 numbers reserved.
*/
#ifdef __FreeBSD__
ZFS_IOC_FIRST = 0,
#else
ZFS_IOC_FIRST = ('Z' << 8),
#endif
ZFS_IOC = ZFS_IOC_FIRST,
ZFS_IOC_POOL_CREATE = ZFS_IOC_FIRST, /* 0x5a00 */
ZFS_IOC_POOL_DESTROY, /* 0x5a01 */
@@ -1280,18 +1284,15 @@ typedef enum zfs_ioc {
ZFS_IOC_WAIT, /* 0x5a53 */
/*
* Linux - 3/64 numbers reserved.
* Per-platform (Optional) - 6/128 numbers reserved.
*/
ZFS_IOC_LINUX = ('Z' << 8) + 0x80,
ZFS_IOC_EVENTS_NEXT, /* 0x5a81 */
ZFS_IOC_EVENTS_CLEAR, /* 0x5a82 */
ZFS_IOC_EVENTS_SEEK, /* 0x5a83 */
/*
* FreeBSD - 1/64 numbers reserved.
*/
ZFS_IOC_FREEBSD = ('Z' << 8) + 0xC0,
ZFS_IOC_PLATFORM = ZFS_IOC_FIRST + 0x80,
ZFS_IOC_EVENTS_NEXT, /* 0x81 (Linux) */
ZFS_IOC_EVENTS_CLEAR, /* 0x82 (Linux) */
ZFS_IOC_EVENTS_SEEK, /* 0x83 (Linux) */
ZFS_IOC_NEXTBOOT, /* 0x84 (FreeBSD) */
ZFS_IOC_JAIL, /* 0x85 (FreeBSD) */
ZFS_IOC_UNJAIL, /* 0x86 (FreeBSD) */
ZFS_IOC_LAST
} zfs_ioc_t;