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FreeBSD does not permits manipulating extended attributes in the system namespace by unprivileged accounts, even if account has appropriate privileges to access filesystem object. In Linux the system namespace is used to preserve posix acls. Some Gnu coreutils binaries uses posix acls, eg, install, ls, cp. And fails if we unexpectedly return EPERM error from xattr system calls. In the other hands, in Linux read and write access to the system namespace depend on the policy implemented for each filesystem, so we'll mimics we're a filesystem that prohibits this for unpriveleged accounts. Reported by: zirias Tested by: zirias MFC after: 1 week (cherry picked from commit 11e37048db35d7fcfc285b867965de1aeefec2c8) |
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