On 10/20/2017 01:07 PM, Eric Blake wrote: > As such, I'm closing this as not a bug. However, feel free to add > further comments to this thread if you have further evidence for > coreutils not doing something required/permitted by POSIX, or not doing > something that matches what is already documented behavior.
In fact, POSIX gives a grammar for valid mode lines, which says the same thing as coreutils: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/chmod.html Namely: > %start symbolic_mode > %% > > > symbolic_mode : clause > | symbolic_mode ',' clause > ; A valid MODE line is one or more comma-separated clause, > > > clause : actionlist > | wholist actionlist Each clause starts either with an OPERATION or a USER, > ; > > > wholist : who > | wholist who > ; > > > who : 'u' | 'g' | 'o' | 'a' > ; wholist is what coreutils calls USER, which is zero or more of [ugoa] where repeats are allowed, > > > actionlist : action > | actionlist action > ; > All clauses require one or more actions, > > action : op > | op permlist > | op permcopy > ; > > > permcopy : 'u' | 'g' | 'o' > ; > > > op : '+' | '-' | '=' > ; > where every action is exactly one OPERATOR [-+=], followed either by 0 or more permlist or exactly one permcopy, > > permlist : perm > | perm permlist > ; > > > [XSI] > perm : 'r' | 'w' | 'x' | 'X' | 's' | 't' > ; And looking at permlist + permcopy, you see where the coreutils PERMISSIONS of [rwxXst]*|[ugo] comes into play. -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org
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