tree 388a3e3498d147d2ff6441450293b15d8ee7c576
parent 9cbe487beeffb887477d953110d3edff79a16c89
author Dylan Reid <dgreid@chromium.org> 1601690171 -0700
committer Commit Bot <commit-bot@chromium.org> 1602653876 +0000

CRAS: metrics - fix snprintf return handling

This fixes an issue where snprintf was using the return value
incorrectly. It returns the length of the format string that would be
printed, not the amount the snprintf limit caused to be printed.

To fix that, ensure that the loop exits as soon as the buffer is
consumed or an error is returned.

Change-Id: I6c8af006f38ea4ce24f190eb4145674b9df34e0b
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/adhd/+/2447235
Reviewed-by: Chih-Yang Hsia <paulhsia@chromium.org>
Reviewed-by: Yu-Hsuan Hsu <yuhsuan@chromium.org>
Tested-by: Dylan Reid <dgreid@chromium.org>
Commit-Queue: Yu-Hsuan Hsu <yuhsuan@chromium.org>