tree 496c2f78e814e0510f1cc4c09b97533217c562ea
parent c1dbe9a1c86da098a29dcdca1a67b65e2de7ec3a
author Florian Fainelli <f.fainelli@gmail.com> 1658770674 -0700
committer Rafael J. Wysocki <rafael.j.wysocki@intel.com> 1659547726 +0200

tools/thermal: Fix possible path truncations

A build with -D_FORTIFY_SOURCE=2 enabled will produce the following warnings:

sysfs.c:63:30: warning: '%s' directive output may be truncated writing up to 255 bytes into a region of size between 0 and 255 [-Wformat-truncation=]
  snprintf(filepath, 256, "%s/%s", path, filename);
                              ^~
Bump up the buffer to PATH_MAX which is the limit and account for all of
the possible NUL and separators that could lead to exceeding the
allocated buffer sizes.

Fixes: 94f69966faf8 ("tools/thermal: Introduce tmon, a tool for thermal subsystem")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>