Messages in this thread |  | | Date | Fri, 1 Dec 2000 12:12:48 -0500 | From | Olivier Galibert <> | Subject | Re: access() says EROFS even for device files if /dev is mounted RO |
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On Wed, Nov 29, 2000 at 04:40:29PM +0000, Tigran Aivazian wrote: > b) what should be the return of access(W_OK) (or, the same, open() for > write with switched uid) for devices on a readonly-mounted filesystems? > > Should the majority win? I.e. should we say OK, as we do now?
My gut feeling on this is that when you mount a filesystem readonly you mean "I don't want the filesystem to be modifiable". Opening a device for write never modifies the filesystem directly. Devices are gateways to resources external to the filesystem, the write permission means something different for them.
Same is for sockets/pipes btw.
And I really wonder how you plan to fsck / if it has been uncleanly unmounted and includes /dev.
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