On 05/26/16 23:37, Gleb Smirnoff wrote:
Hans,
On Thu, May 26, 2016 at 08:41:55AM +0000, Hans Petter Selasky wrote:
H> Author: hselasky
H> Date: Thu May 26 08:41:55 2016
H> New Revision: 300718
H> URL: https://svnweb.freebsd.org/changeset/base/300718
H>
H> Log:
H> Add support for boolean sysctl's.
H>
H> Because the size of bool can be implementation defined, make a bool
H> sysctl handler which handle bools. Userspace sees the bools like
H> unsigned 8-bit integers. Values are filtered to either 1 or 0 upon
H> read and write, similar to what a compiler would do.
H>
H> Requested by: kmacy @
H> Sponsored by: Mellanox Technologies
Would be nice if sysctl(8) would explicitly display them as "true" or "false"
instead of 0 and 1. Now the userland can't differ them from uint8_t oids.
Hi,
We cannot use the "bool" type in userspace at least, because
sizeof(bool) depends on the compiler. So the interface must use an
integer type at least, possibly uint8_t like now.
Your suggestion makes sense. I'll look at some existing patches
extending sysctl and test and make one for bool.
--HPS
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