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Don't panic when we read an empty ACL from ZFS. Apparently this may happen
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Description

Don't panic when we read an empty ACL from ZFS. Apparently this may happen
with filesystems created under MacOS X ZFS port. This is kind of filesystem
corruption (we don't allow for setting empty ACLs), so make acl_get_file(3)
and related syscalls fail with EINVAL in that case. In theory, we could
return empty ACL to userland, but I'm afraid this would break some code.

MFC after: 3 days

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Provenance
traszAuthored on
Parents
rS216083: Several chipset drivers alter parameters relevant for the DMA tag creation,
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PathSize
head/
sys/
cddl/
compat/
opensolaris/
kern/

rS216084

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head/sys/cddl/compat/opensolaris/kern/opensolaris_acl.c

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