+/* Try to find the path to an executable from argv[0], this is only
+ * used when os_get_runtime_executable_path() returns NULL */
+#ifdef LISP_FEATURE_WIN32
+char *
+search_for_executable(const char *argv0)
+{
+ return NULL;
+}
+#else /* LISP_FEATURE_WIN32 */
+char *
+search_for_executable(const char *argv0)
+{
+ char *search, *start, *end, *buf;
+
+ /* If argv[0] contains a slash then it's probably an absolute path
+ * or relative to the current directory, so check if it exists. */
+ if (strchr(argv0, '/') != NULL && access(argv0, F_OK) == 0)
+ return copied_realpath(argv0);
+
+ /* Bail on an absolute path which doesn't exist */
+ if (argv0[0] == '/')
+ return NULL;
+
+ /* Otherwise check if argv[0] exists relative to any directory in PATH */
+ search = getenv("PATH");
+ if (search == NULL)
+ return NULL;
+ search = copied_string(search);
+ buf = successful_malloc(PATH_MAX + 1);
+ for (start = search; (end = strchr(start, ':')) != NULL; start = end + 1) {
+ *end = '\0';
+ snprintf(buf, PATH_MAX + 1, "%s/%s", start, argv0);
+ if (access(buf, F_OK) == 0) {
+ free(search);
+ search = copied_realpath(buf);
+ free(buf);
+ return search;
+ }
+ }
+
+ free(search);
+ free(buf);
+ return NULL;
+}
+#endif /* LISP_FEATURE_WIN32 */
+
+size_t
+parse_size_arg(char *arg, char *arg_name)
+{
+ char *tail, *power_name;
+ size_t power, res;
+
+ res = strtoul(arg, &tail, 0);
+
+ if (arg == tail) {
+ lose("%s argument is not a number: %s", arg_name, arg);
+ } else if (tail[0]) {
+ int i, size;
+ power_name = copied_string(tail);
+ size = strlen(power_name);
+ for (i=0; i<size; i++)
+ power_name[i] = toupper(power_name[i]);
+ } else {
+ power = 20;
+ power_name = NULL;
+ }
+ if (power_name) {
+ if ((0==strcmp("KB", power_name)) ||
+ (0==strcmp("KIB", power_name))) {
+ power = 10;
+ } else if ((0==strcmp("MB", power_name)) ||
+ (0==strcmp("MIB", power_name))) {
+ power = 20;
+ } else if ((0==strcmp("GB", power_name)) ||
+ (0==strcmp("GIB", power_name))) {
+ power = 30;
+ } else {
+ lose("%s argument has an unknown suffix: %s", arg_name, tail);
+ }
+ free(power_name);
+ }
+ if ((res <= 0) ||
+ (res >= (SIZE_MAX >> power))) {
+ lose("%s argument is out of range: %s", arg_name, arg);
+ }
+ res <<= power;
+ return res;
+}
+
projects / sbcl.git / blobdiff