On 2014-03-30 21:52, Linus Torvalds wrote:
On Sun, Mar 30, 2014 at 12:14 PM, Venkatesh Shukla IIT BHU
<[email protected]> wrote:
I have done as you asked. The output is here :
http://pastebin.com/E50ayiSs
I have recently shifted to Fedora 20. It worked in Ubuntu earlier.
It does indeed look like some glibc idiocy. Sometimes I wonder what
the f*ck is wrong with libc people.
The kernel didn't actually complain at all, and what seems to happen
is that glibc tries to be "helpful", and after it has done the TCSETC
it does a TCGETC and compares the result.
I'm also doing this check in libdivecomputer. This is even mentioned in
the tcsetattr man pages:
"Note that tcsetattr() returns success if any of the requested changes
could be successfully carried out. Therefore, when making multiple
changes it may be necessary to follow this call with a further call to
tcgetattr() to check that all changes have been performed successfully."
Because libdivecomputer makes multiple changes to the termios structure,
I just followed this advice...
I simply don't know this stuff well enough, especially at the time when
I wrote that code, to judge whether this kind of check is
needed/stupid/whatever.
Jef
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