libspl: consult ZFS_HOSTID on FreeBSD as wellvendor/openzfs/master

get_system_hostid() returns gethostid() on FreeBSD, so ZFS_HOSTID has
no effect there, while on Linux it overrides the SPL hostid.  zloop.sh
exports it for the iterations which need a hostid, and the ztest(1)
ENVIRONMENT VARIABLES section describes it without restricting it to
one platform, so both should read it.

Check ZFS_HOSTID first and fall back to gethostid(), parsing and
masking the value exactly as the Linux implementation does.  A value
which parses as zero is ignored there, so it is ignored here too.

Drop the "On Linux" qualifier from the -M description in ztest(1),
which this change makes untrue.

Suggested-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Michael Heller <michael.heller@gmail.com>
Closes #18918
Closes #18964

0 files changed, 0 insertions, 0 deletions