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50 lines
1.6 KiB
50 lines
1.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_TTY_FLIP_H |
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#define _LINUX_TTY_FLIP_H |
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#include <linux/tty_buffer.h> |
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#include <linux/tty_port.h> |
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struct tty_ldisc; |
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int tty_buffer_set_limit(struct tty_port *port, int limit); |
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unsigned int tty_buffer_space_avail(struct tty_port *port); |
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int tty_buffer_request_room(struct tty_port *port, size_t size); |
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int tty_insert_flip_string_flags(struct tty_port *port, |
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const unsigned char *chars, const char *flags, size_t size); |
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int tty_insert_flip_string_fixed_flag(struct tty_port *port, |
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const unsigned char *chars, char flag, size_t size); |
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int tty_prepare_flip_string(struct tty_port *port, unsigned char **chars, |
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size_t size); |
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void tty_flip_buffer_push(struct tty_port *port); |
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int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag); |
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static inline int tty_insert_flip_char(struct tty_port *port, |
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unsigned char ch, char flag) |
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{ |
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struct tty_buffer *tb = port->buf.tail; |
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int change; |
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change = (tb->flags & TTYB_NORMAL) && (flag != TTY_NORMAL); |
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if (!change && tb->used < tb->size) { |
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if (~tb->flags & TTYB_NORMAL) |
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*flag_buf_ptr(tb, tb->used) = flag; |
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*char_buf_ptr(tb, tb->used++) = ch; |
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return 1; |
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} |
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return __tty_insert_flip_char(port, ch, flag); |
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} |
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static inline int tty_insert_flip_string(struct tty_port *port, |
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const unsigned char *chars, size_t size) |
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{ |
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return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size); |
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} |
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int tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p, |
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const char *f, int count); |
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void tty_buffer_lock_exclusive(struct tty_port *port); |
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void tty_buffer_unlock_exclusive(struct tty_port *port); |
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#endif /* _LINUX_TTY_FLIP_H */
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