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SubjectRe: kdbus: add documentation

On Sun, Nov 30, 2014 at 10:02 AM, Florian Weimer <> wrote:
> * Greg Kroah-Hartman:
>> +7.4 Receiving messages
>> +Also, if the connection allowed for file descriptor to be passed
>> +(KDBUS_HELLO_ACCEPT_FD), and if the message contained any, they will be
>> +installed into the receiving process after the KDBUS_CMD_MSG_RECV ioctl
>> +returns. The receiving task is obliged to close all of them appropriately.
> What happens if this is not possible because the file descriptor limit
> of the processes would be exceeded? EMFILE, and the message will not
> be received?

The message is returned without installing the FDs. This is signaled
by EMFILE, but a valid pool offset.


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