void *map_file(char *fname, size_t size);
char **file_lines_load(const char *fname, int *numlines, size_t maxsize);
char **fd_lines_load(int fd, int *numlines, size_t maxsize);
-char **file_lines_pload(char *syscmd, int *numlines);
+char **file_lines_pload(const char *syscmd, int *numlines);
void file_lines_free(char **lines);
void file_lines_slashcont(char **lines);
bool file_save(const char *fname, void *packet, size_t length);