Messages in this thread | | | Date | Thu, 28 Apr 2005 10:26:59 -0700 | From | Greg KH <> | Subject | Re: [RFC/PATCH 0/5] read/write on attribute w/o show/store should return -ENOSYS |
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On Thu, Apr 28, 2005 at 12:30:09AM -0500, Dmitry Torokhov wrote: > Hi, > > Jean Delvare has noticed that if a driver happens to declare its > attribute as RW but doesn't provide store() method attempt to write > into such attribute will cause spinning process as most of the > attribute implementations return 0 in case of missing store causing > endless retries. In some cases missing show/store will return -EPERM, > -EACCESS or -EINVAL. > > I think we should unify implementations and have them all return -ENOSYS > (function not implemented) when corresponding method (show/store) is > missing.
What is the POSIX standard for this? ENOSYS or EACCESS?
Or anyone have a link that I can look this up at?
thanks,
greg k-h
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