/* * I'm tired of doing "vsnprintf()" etc just to open a * file, so here's a "return static buffer with printf" * interface for paths. * * It's obviously not thread-safe. Sue me. But it's quite * useful for doing things like * * f = open(mkpath("%s/%s.perf", base, name), O_RDONLY); * * which is what it's designed for. */ #include "cache.h" #include "util.h" #include static char bad_path[] = "/bad-path/"; /* * One hack: */ static char *get_pathname(void) { static char pathname_array[4][PATH_MAX]; static int idx; return pathname_array[3 & ++idx]; } static char *cleanup_path(char *path) { /* Clean it up */ if (!memcmp(path, "./", 2)) { path += 2; while (*path == '/') path++; } return path; } char *mkpath(const char *fmt, ...) { va_list args; unsigned len; char *pathname = get_pathname(); va_start(args, fmt); len = vsnprintf(pathname, PATH_MAX, fmt, args); va_end(args); if (len >= PATH_MAX) return bad_path; return cleanup_path(pathname); } net-next plumbingsTobias Klauser

path: root/include/kvm/arm_pmu.h

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