[Cc-ing to the rumpkernel-users list, better discussed there rather than
hidden away under many clicks of Github]
> Looks good, except rump_pub_etfs_register(), like all rump_pub calls, returns
> a NetBSD errno. So you can't use warn() there meaningfully.
Right, in fact rump_etfs(3) says nothing about the return values of those
functions; I just assumed they returned 0 on success and -1 on error (and
set errno). Reading rumpvfs/rumpfs.c it turns out they actually return 0
on success and the NetBSD errno directly otherwise.
Given there's no way to sensibly translate the NetBSD errno to a local one,
for this particular case shall I just call
warnx("%s: rump_pub_etfs_register failed (errno=%d)", fsdevice, rv)
?
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