static int which_program()

in helpers/uprobe_helpers.c [100:123]

• 22 lines of code
• 4 McCabe index (conditional complexity)

static int which_program(const char *prog, char *path, size_t path_sz)
{
	FILE *which;
	char cmd[100];

	if (snprintf(cmd, sizeof(cmd), "which %s", prog) >= sizeof(cmd)) {
		warn("snprintf which prog failed");
		return -1;
	}
	which = popen(cmd, "r");
	if (!which) {
		warn("which failed");
		return -1;
	}
	if (!fgets(path, path_sz, which)) {
		warn("fgets which failed");
		pclose(which);
		return -1;
	}
	/* which has a \n at the end of the string */
	path[strlen(path) - 1] = '\0';
	pclose(which);
	return 0;
}