kselftest: Add a ksft_perror() helper
commit 907f3302 upstream. The standard library perror() function provides a convenient way to print an error message based on the current errno but this doesn't play nicely with KTAP output. Provide a helper which does an equivalent thing in a KTAP compatible format. nolibc doesn't have a strerror() and adding the table of strings required doesn't seem like a good fit for what it's trying to do so when we're using that only print the errno. Signed-off-by:Mark Brown <broonie@kernel.org> Reviewed-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
Shuah Khan <skhan@linuxfoundation.org> Stable-dep-of: 071af0c9 ("selftests: timers: Convert posix_timers test to generate KTAP output") Signed-off-by:
Edward Liaw <edliaw@google.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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