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10-01-2007
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NFS share options
Hello,
I'm doing a Perl script to parse the dfstab file and find dangerous configurations (rw to everyone, root access, etc). My question is, if I have a share command like this: Code:
share -F nfs -o ro=chrome:copper:zinc,root=chrome /usr/man Thanks. 
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10-01-2007
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and nfs share of rw isn't necessarily dangerous, as it may be appropriate for clients to write to servers. the user/group/read/write/execute attributes are still respected, however you need to confirm that there is a one to one mapping for uids and gids between server and all clients.
the "root=" means that the root from server chrome will be allowed root access to this share. This would typically be used for diskless clients.
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10-01-2007
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Well, I think I was not explicit enough. With that share options, it means that /usr/man is rw to everyone due to the absent of rw in the options configuration? Or the ro option overwrites the default rw behaviour? It's the same having this:
Code:
share -F nfs -o ro=chrome:copper:zinc,root=chrome /usr/man Code:
share -F nfs -o ro=chrome:copper:zinc,root=chrome,rw /usr/man Nevermind the other options, they're there just as an example.
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10-01-2007
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A share is read/write unless the read only option is changes it.
Code:
ro Sharing will be read-only to all clients.
ro=access_list
Sharing will be read-only to the clients
listed in access_list; overrides the rw
suboption for the clients specified. See
access_list below.
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10-01-2007
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But the order matters? For example:
Code:
share -F nfs -o rw=chrome,ro=chrome /usr/man Code:
share -F nfs -o ro=chrome,rw=chrome /usr/man
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10-01-2007
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The most restrictive permissions apply, in this case it will be ro.
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