strn(cat|cpy) has a bad habit of not nul-terminating the destination,
resulting in constructions like
strncpy(foo, bar, sizeof(foo) - 1);
foo[sizeof(foo) - 1] = '\0';
However, it is very easy to forget about this behavior and accidentally
leave a string unterminated. This has shown up in some recent coverity
scans [1, 2] (including code recently touched by yours truly).
Fortunately, the guys at OpenBSD came up with strl(cat|cpy), which always
nul-terminate strings. These functions are already in U-Boot, so we should
encourage new code to use them instead of strn(cat|cpy).
[1] https://lists.denx.de/pipermail/u-boot/2021-March/442888.html
[2] https://lists.denx.de/pipermail/u-boot/2021-January/438073.html
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
As a way of keeping the driver declarations more consistent, add a warning
if the struct used does not end with _priv or _plat.
Signed-off-by: Simon Glass <sjg@chromium.org>
CONFIG_IS_ENABLED() takes the kconfig name without the CONFIG_ prefix,
e.g. CONFIG_IS_ENABLED(CLK) for CONFIG_CLK. Make including the prefix
an error in checkpatch.pl so calls in the wrong format aren't
accidentally reintroduced.
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Collect the 'checkpatch type' from each error, warning and check. Provide
this to patman and update the uclass test to use it.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is quite likely that the number of U-Boot-specific tests in
checkpatch.pl will increase over time. We should have tests for these to
avoid undefined behaviour and bugs being introduced, which might cause
people to ignore the warnings.
Add a simple new class that can generate a patch with a single-line
addition in it. Use that to add a test for one of the checkpatch checks.
Signed-off-by: Simon Glass <sjg@chromium.org>
These tests check checkpatch.pl operation and can server as our tests for
the U-Boot-specific updates to that script. Rename the file and update
comments to indicate this.
Signed-off-by: Simon Glass <sjg@chromium.org>
