copyfile 685 tools/perf/util/build-id.c if (copyfile("/proc/kallsyms", filename)) copyfile 691 tools/perf/util/build-id.c copyfile(name, filename)) copyfile 717 tools/perf/util/build-id.c copyfile(debugfile, filename)) copyfile 11 tools/perf/util/copyfile.h int copyfile(const char *from, const char *to);