fsusage.c:36: warning: function declaration isn't a prototype
fsusage.c:72: warning: function declaration isn't a prototype
fsusage.c:94: warning: function declaration isn't a prototype
fsusage.c:239: warning: comparison between signed and unsigned
fsusage.c:246: warning: comparison between signed and unsigned
fsusage.c:247: warning: comparison between signed and unsigned
fsusage.c:250: warning: comparison between signed and unsigned
fsusage.c:251: warning: comparison between signed and unsigned
fsusage.c:104: warning: unused parameter `disk'