Messages in this thread Patch in this message | | | From | Rodolfo Giometti <> | Date | Wed, 2 Dec 2009 18:18:43 +0100 | Subject | [PATCH 05/11] ldisc n_tty: export all N_TTY ldisc methods. |
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Signed-off-by: Rodolfo Giometti <giometti@linux.it> --- drivers/char/n_tty.c | 31 +++++++++++++++++++++---------- include/linux/tty.h | 16 ++++++++++++++++ 2 files changed, 37 insertions(+), 10 deletions(-)
diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c index 2e50f4d..88733c5 100644 --- a/drivers/char/n_tty.c +++ b/drivers/char/n_tty.c @@ -48,6 +48,7 @@ #include <linux/audit.h> #include <linux/file.h> #include <linux/uaccess.h> +#include <linux/module.h> #include <asm/system.h> @@ -193,7 +194,7 @@ static void reset_buffer_flags(struct tty_struct *tty) * Locking: ctrl_lock, read_lock. */ -static void n_tty_flush_buffer(struct tty_struct *tty) +void n_tty_flush_buffer(struct tty_struct *tty) { unsigned long flags; /* clear everything and unthrottle the driver */ @@ -209,6 +210,7 @@ static void n_tty_flush_buffer(struct tty_struct *tty) } spin_unlock_irqrestore(&tty->ctrl_lock, flags); } +EXPORT_SYMBOL_GPL(n_tty_flush_buffer); /** * n_tty_chars_in_buffer - report available bytes @@ -220,7 +222,7 @@ static void n_tty_flush_buffer(struct tty_struct *tty) * Locking: read_lock */ -static ssize_t n_tty_chars_in_buffer(struct tty_struct *tty) +ssize_t n_tty_chars_in_buffer(struct tty_struct *tty) { unsigned long flags; ssize_t n = 0; @@ -236,6 +238,7 @@ static ssize_t n_tty_chars_in_buffer(struct tty_struct *tty) spin_unlock_irqrestore(&tty->read_lock, flags); return n; } +EXPORT_SYMBOL_GPL(n_tty_chars_in_buffer); /** * is_utf8_continuation - utf8 multibyte check @@ -1329,11 +1332,12 @@ handle_newline: * IO must be woken up */ -static void n_tty_write_wakeup(struct tty_struct *tty) +void n_tty_write_wakeup(struct tty_struct *tty) { if (tty->fasync && test_and_clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags)) kill_fasync(&tty->fasync, SIGIO, POLL_OUT); } +EXPORT_SYMBOL_GPL(n_tty_write_wakeup); /** * n_tty_receive_buf - data receive @@ -1348,7 +1352,7 @@ static void n_tty_write_wakeup(struct tty_struct *tty) * calls one at a time and in order (or using flush_to_ldisc) */ -static void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp, +void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp, char *fp, int count) { const unsigned char *p; @@ -1422,6 +1426,7 @@ static void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp, if (tty->receive_room < TTY_THRESHOLD_THROTTLE) tty_throttle(tty); } +EXPORT_SYMBOL_GPL(n_tty_receive_buf); int is_ignored(int sig) { @@ -1443,7 +1448,7 @@ int is_ignored(int sig) * Locking: Caller holds tty->termios_mutex */ -static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old) +void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old) { int canon_change = 1; BUG_ON(!tty); @@ -1522,6 +1527,7 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old) wake_up_interruptible(&tty->write_wait); wake_up_interruptible(&tty->read_wait); } +EXPORT_SYMBOL_GPL(n_tty_set_termios); /** * n_tty_close - close the ldisc for this tty @@ -1533,7 +1539,7 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old) * ldisc methods are in progress. */ -static void n_tty_close(struct tty_struct *tty) +void n_tty_close(struct tty_struct *tty) { n_tty_flush_buffer(tty); if (tty->read_buf) { @@ -1545,6 +1551,7 @@ static void n_tty_close(struct tty_struct *tty) tty->echo_buf = NULL; } } +EXPORT_SYMBOL_GPL(n_tty_close); /** * n_tty_open - open an ldisc @@ -1556,7 +1563,7 @@ static void n_tty_close(struct tty_struct *tty) * until a close. */ -static int n_tty_open(struct tty_struct *tty) +int n_tty_open(struct tty_struct *tty) { if (!tty) return -EINVAL; @@ -1580,6 +1587,7 @@ static int n_tty_open(struct tty_struct *tty) tty->closing = 0; return 0; } +EXPORT_SYMBOL_GPL(n_tty_open); static inline int input_available_p(struct tty_struct *tty, int amt) { @@ -1695,7 +1703,7 @@ static int job_control(struct tty_struct *tty, struct file *file) * This code must be sure never to sleep through a hangup. */ -static ssize_t n_tty_read(struct tty_struct *tty, struct file *file, +ssize_t n_tty_read(struct tty_struct *tty, struct file *file, unsigned char __user *buf, size_t nr) { unsigned char __user *b = buf; @@ -1895,6 +1903,7 @@ do_it_again: n_tty_set_room(tty); return retval; } +EXPORT_SYMBOL_GPL(n_tty_read); /** * n_tty_write - write function for tty @@ -1918,7 +1927,7 @@ do_it_again: * lock themselves) */ -static ssize_t n_tty_write(struct tty_struct *tty, struct file *file, +ssize_t n_tty_write(struct tty_struct *tty, struct file *file, const unsigned char *buf, size_t nr) { const unsigned char *b = buf; @@ -1995,6 +2004,7 @@ break_out: set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); return (b - buf) ? b - buf : retval; } +EXPORT_SYMBOL_GPL(n_tty_write); /** * n_tty_poll - poll method for N_TTY @@ -2010,7 +2020,7 @@ break_out: * Called without the kernel lock held - fine */ -static unsigned int n_tty_poll(struct tty_struct *tty, struct file *file, +unsigned int n_tty_poll(struct tty_struct *tty, struct file *file, poll_table *wait) { unsigned int mask = 0; @@ -2037,6 +2047,7 @@ static unsigned int n_tty_poll(struct tty_struct *tty, struct file *file, mask |= POLLOUT | POLLWRNORM; return mask; } +EXPORT_SYMBOL_GPL(n_tty_poll); static unsigned long inq_canon(struct tty_struct *tty) { diff --git a/include/linux/tty.h b/include/linux/tty.h index f0f43d0..e5217db 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -13,6 +13,7 @@ #include <linux/tty_driver.h> #include <linux/tty_ldisc.h> #include <linux/mutex.h> +#include <linux/poll.h> #include <asm/system.h> @@ -482,6 +483,21 @@ extern void tty_ldisc_begin(void); /* This last one is just for the tty layer internals and shouldn't be used elsewhere */ extern void tty_ldisc_enable(struct tty_struct *tty); +extern void n_tty_flush_buffer(struct tty_struct *tty); +extern ssize_t n_tty_chars_in_buffer(struct tty_struct *tty); +extern void n_tty_write_wakeup(struct tty_struct *tty); +extern void n_tty_receive_buf(struct tty_struct *tty, const unsigned char *cp, + char *fp, int count); +extern void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old); +extern void n_tty_close(struct tty_struct *tty); +extern int n_tty_open(struct tty_struct *tty); +extern ssize_t n_tty_read(struct tty_struct *tty, struct file *file, + unsigned char __user *buf, size_t nr); +extern ssize_t n_tty_write(struct tty_struct *tty, struct file *file, + const unsigned char *buf, size_t nr); +extern unsigned int n_tty_poll(struct tty_struct *tty, struct file *file, + poll_table *wait); + /* n_tty.c */ extern struct tty_ldisc_ops tty_ldisc_N_TTY; -- 1.6.3.3
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