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@@ -9,89 +9,89 @@
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*
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* int (*open)(struct tty_struct *);
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*
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- * This function is called when the line discipline is associated
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- * with the tty. The line discipline can use this as an
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- * opportunity to initialize any state needed by the ldisc routines.
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- *
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+ * This function is called when the line discipline is associated
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+ * with the tty. The line discipline can use this as an
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+ * opportunity to initialize any state needed by the ldisc routines.
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+ *
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* void (*close)(struct tty_struct *);
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*
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* This function is called when the line discipline is being
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- * shutdown, either because the tty is being closed or because
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- * the tty is being changed to use a new line discipline
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- *
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+ * shutdown, either because the tty is being closed or because
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+ * the tty is being changed to use a new line discipline
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+ *
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* void (*flush_buffer)(struct tty_struct *tty);
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*
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- * This function instructs the line discipline to clear its
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- * buffers of any input characters it may have queued to be
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- * delivered to the user mode process.
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- *
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+ * This function instructs the line discipline to clear its
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+ * buffers of any input characters it may have queued to be
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+ * delivered to the user mode process.
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+ *
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* ssize_t (*chars_in_buffer)(struct tty_struct *tty);
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*
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- * This function returns the number of input characters the line
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+ * This function returns the number of input characters the line
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* discipline may have queued up to be delivered to the user mode
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* process.
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- *
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+ *
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* ssize_t (*read)(struct tty_struct * tty, struct file * file,
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* unsigned char * buf, size_t nr);
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*
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- * This function is called when the user requests to read from
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- * the tty. The line discipline will return whatever characters
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- * it has buffered up for the user. If this function is not
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- * defined, the user will receive an EIO error.
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- *
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+ * This function is called when the user requests to read from
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+ * the tty. The line discipline will return whatever characters
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+ * it has buffered up for the user. If this function is not
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+ * defined, the user will receive an EIO error.
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+ *
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* ssize_t (*write)(struct tty_struct * tty, struct file * file,
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- * const unsigned char * buf, size_t nr);
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- *
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- * This function is called when the user requests to write to the
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- * tty. The line discipline will deliver the characters to the
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- * low-level tty device for transmission, optionally performing
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- * some processing on the characters first. If this function is
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- * not defined, the user will receive an EIO error.
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- *
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+ * const unsigned char * buf, size_t nr);
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+ *
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+ * This function is called when the user requests to write to the
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+ * tty. The line discipline will deliver the characters to the
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+ * low-level tty device for transmission, optionally performing
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+ * some processing on the characters first. If this function is
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+ * not defined, the user will receive an EIO error.
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+ *
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* int (*ioctl)(struct tty_struct * tty, struct file * file,
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- * unsigned int cmd, unsigned long arg);
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+ * unsigned int cmd, unsigned long arg);
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*
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* This function is called when the user requests an ioctl which
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- * is not handled by the tty layer or the low-level tty driver.
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- * It is intended for ioctls which affect line discpline
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- * operation. Note that the search order for ioctls is (1) tty
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- * layer, (2) tty low-level driver, (3) line discpline. So a
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- * low-level driver can "grab" an ioctl request before the line
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- * discpline has a chance to see it.
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- *
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+ * is not handled by the tty layer or the low-level tty driver.
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+ * It is intended for ioctls which affect line discpline
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+ * operation. Note that the search order for ioctls is (1) tty
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+ * layer, (2) tty low-level driver, (3) line discpline. So a
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+ * low-level driver can "grab" an ioctl request before the line
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+ * discpline has a chance to see it.
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+ *
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* long (*compat_ioctl)(struct tty_struct * tty, struct file * file,
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- * unsigned int cmd, unsigned long arg);
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+ * unsigned int cmd, unsigned long arg);
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*
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- * Process ioctl calls from 32-bit process on 64-bit system
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+ * Process ioctl calls from 32-bit process on 64-bit system
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*
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* void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
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*
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- * This function notifies the line discpline that a change has
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- * been made to the termios structure.
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- *
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+ * This function notifies the line discpline that a change has
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+ * been made to the termios structure.
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+ *
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* int (*poll)(struct tty_struct * tty, struct file * file,
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- * poll_table *wait);
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+ * poll_table *wait);
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*
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- * This function is called when a user attempts to select/poll on a
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- * tty device. It is solely the responsibility of the line
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- * discipline to handle poll requests.
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+ * This function is called when a user attempts to select/poll on a
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+ * tty device. It is solely the responsibility of the line
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+ * discipline to handle poll requests.
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*
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* void (*receive_buf)(struct tty_struct *, const unsigned char *cp,
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- * char *fp, int count);
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- *
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- * This function is called by the low-level tty driver to send
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- * characters received by the hardware to the line discpline for
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- * processing. <cp> is a pointer to the buffer of input
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- * character received by the device. <fp> is a pointer to a
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- * pointer of flag bytes which indicate whether a character was
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- * received with a parity error, etc.
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- *
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+ * char *fp, int count);
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+ *
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+ * This function is called by the low-level tty driver to send
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+ * characters received by the hardware to the line discpline for
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+ * processing. <cp> is a pointer to the buffer of input
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+ * character received by the device. <fp> is a pointer to a
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+ * pointer of flag bytes which indicate whether a character was
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+ * received with a parity error, etc.
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+ *
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* void (*write_wakeup)(struct tty_struct *);
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*
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- * This function is called by the low-level tty driver to signal
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- * that line discpline should try to send more characters to the
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- * low-level driver for transmission. If the line discpline does
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- * not have any more data to send, it can just return.
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+ * This function is called by the low-level tty driver to signal
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+ * that line discpline should try to send more characters to the
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+ * low-level driver for transmission. If the line discpline does
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+ * not have any more data to send, it can just return.
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*
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* int (*hangup)(struct tty_struct *)
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*
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@@ -115,7 +115,7 @@ struct tty_ldisc_ops {
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char *name;
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int num;
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int flags;
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-
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+
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/*
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* The following routines are called from above.
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*/
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@@ -123,19 +123,19 @@ struct tty_ldisc_ops {
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void (*close)(struct tty_struct *);
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void (*flush_buffer)(struct tty_struct *tty);
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ssize_t (*chars_in_buffer)(struct tty_struct *tty);
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- ssize_t (*read)(struct tty_struct * tty, struct file * file,
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- unsigned char __user * buf, size_t nr);
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- ssize_t (*write)(struct tty_struct * tty, struct file * file,
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- const unsigned char * buf, size_t nr);
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- int (*ioctl)(struct tty_struct * tty, struct file * file,
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+ ssize_t (*read)(struct tty_struct *tty, struct file *file,
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+ unsigned char __user *buf, size_t nr);
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+ ssize_t (*write)(struct tty_struct *tty, struct file *file,
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+ const unsigned char *buf, size_t nr);
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+ int (*ioctl)(struct tty_struct *tty, struct file *file,
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unsigned int cmd, unsigned long arg);
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- long (*compat_ioctl)(struct tty_struct * tty, struct file * file,
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+ long (*compat_ioctl)(struct tty_struct *tty, struct file *file,
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unsigned int cmd, unsigned long arg);
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- void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
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+ void (*set_termios)(struct tty_struct *tty, struct ktermios *old);
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unsigned int (*poll)(struct tty_struct *, struct file *,
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struct poll_table_struct *);
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int (*hangup)(struct tty_struct *tty);
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-
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+
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/*
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* The following routines are called from below.
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*/
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@@ -145,7 +145,7 @@ struct tty_ldisc_ops {
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void (*dcd_change)(struct tty_struct *, unsigned int);
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struct module *owner;
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-
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+
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int refcount;
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};
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