Re: SYSFS "errors"

Em Tue, 19 Feb 2013 15:38:09 +0200
Felipe Balbi [off-list ref] escreveu:

Hi,

On Tue, Feb 19, 2013 at 02:28:54PM +0100, Borislav Petkov wrote:

quoted

On Tue, Feb 19, 2013 at 03:15:00PM +0200, Felipe Balbi wrote:

quoted

what's the problem with that ?

Not a problem - simply annoying.

$ ./test.sh
cat: /path/to/file/that/doesnt/exist.txt: No such file or directory
Setting scrubrate to:

I'm sure someone would ask themselves why all of a sudden the file is
gone.

quoted

$ cat /path/to/file/that/doesnt/exist.txt
cat: /path/to/file/that/doesnt/exist.txt: No such file or directory

Didn't see any gates to hell opening here...

And I don't see why we have to debate such a trivial thing when we can
fix it *properly* without *absolutely* *not* upsetting userspace.

because changing the permission will cause the same issue:

It is actually worse, as if someone is using a C code to open the device
with
	fp = open ("/sys/devices/system/edac/mc/mc0/sdram_scrub_rate", O_RDWR);

It will now start to fail if the device doesn't have both permissions.

Regards,
Mauro