On Tue, Feb 15, 2011 at 04:20:33PM +0100, Tejun Heo wrote: > Hmmm... but -EACCES is the correct one here. The device node itself > is rejecting RW access. There's no FS which is enforcing RO. Exactly:) If the filesystem permissions were what was blocking this (say r--) then I'd agree with EACCES. Interpret those man pages in the context of 'pathname refers to a block device not a file'. If it's EACCES, I just need to gain more privilege/capabilities and then repeat the system call and it could succeed. But EROFS tells me however much extra privilege I get it's going to make no difference. That's why I'm arguing EACCES is not a good error to return and EROFS is more appropriate. Alasdair -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
