On Sun, Mar 10, 2013 at 5:35 PM, Al Viro <v...@zeniv.linux.org.uk> wrote:
>
> Hmm... How the devil would things like pipe_read_open() get called, anyway?
> pipe_rdwr_open() can be called, all right - that happens if you do pipe()
> and then open() via /proc/self/fd/<n>. But how could pipe_read_open() and
> pipe_write_open() be called? They are accessible only as ->open() of
> read_pipefifo_fops/write_pipefifo_fops. And those are only used by
> fifo_open(), which does reassign file->f_op to them, but does *not* call
> their ->open()...
.. same deal? Open the resulting fd from /proc/self/fd/<n> afterwards,
which will call file->f_op->open(), no?
Linus
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