On 17/03/2019 15:03, Jeffrey Walton wrote:
Working from Master I got the message about the missing ioctl:
Debug: term_config
==3366== Warning: noted but unhandled ioctl 0x540c with no size/direction hints.
==3366== This could cause spurious value errors to appear.
==3366== See README_MISSING_SYSCALL_OR_IOCTL for guidance on writing a proper
wrapper.
Following http://www.valgrind.org/docs/manual/dist.readme-missing.html
I found the source files don't really follow what is described. For
example, I only see PRE_unknown_ioctl and POST_unknown_ioctl, and I
don't see the big collection of existing ioctl's as described. I don't
think it is a good idea to go further (for me).
You're looking for PRE(sys_ioctl) and POST(sys_ioctl) here:
coregrind/m_syswrap/syswrap-linux.c
Both ioctl's take a NULL argument, so no parameters are passed.
If there's no memory being read or written then the warning
is harmless and you can ignore it.
Tom
--
Tom Hughes (t...@compton.nu)
http://compton.nu/
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