struct chan_ops {
char *type;
- void *(*init)(char *, int, struct chan_opts *);
+ void *(*init)(char *, int, const struct chan_opts *);
int (*open)(int, int, int, void *, char **);
void (*close)(int, void *);
int (*read)(int, char *, void *);
int winch;
};
-extern struct chan_ops fd_ops, null_ops, port_ops, pts_ops, pty_ops, tty_ops,
- xterm_ops;
+extern const struct chan_ops fd_ops, null_ops, port_ops, pts_ops, pty_ops,
+ tty_ops, xterm_ops;
extern void generic_close(int fd, void *unused);
extern int generic_read(int fd, char *c_out, void *unused);