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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /include/linux/tty_flip.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/linux/tty_flip.h')
-rw-r--r-- | include/linux/tty_flip.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h new file mode 100644 index 000000000..483d41cbc --- /dev/null +++ b/include/linux/tty_flip.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_TTY_FLIP_H +#define _LINUX_TTY_FLIP_H + +#include <linux/tty_buffer.h> +#include <linux/tty_port.h> + +struct tty_ldisc; + +int tty_buffer_set_limit(struct tty_port *port, int limit); +unsigned int tty_buffer_space_avail(struct tty_port *port); +int tty_buffer_request_room(struct tty_port *port, size_t size); +int tty_insert_flip_string_flags(struct tty_port *port, + const unsigned char *chars, const char *flags, size_t size); +int tty_insert_flip_string_fixed_flag(struct tty_port *port, + const unsigned char *chars, char flag, size_t size); +int tty_prepare_flip_string(struct tty_port *port, unsigned char **chars, + size_t size); +void tty_flip_buffer_push(struct tty_port *port); +int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag); + +static inline int tty_insert_flip_char(struct tty_port *port, + unsigned char ch, char flag) +{ + struct tty_buffer *tb = port->buf.tail; + int change; + + change = (tb->flags & TTYB_NORMAL) && (flag != TTY_NORMAL); + if (!change && tb->used < tb->size) { + if (~tb->flags & TTYB_NORMAL) + *flag_buf_ptr(tb, tb->used) = flag; + *char_buf_ptr(tb, tb->used++) = ch; + return 1; + } + return __tty_insert_flip_char(port, ch, flag); +} + +static inline int tty_insert_flip_string(struct tty_port *port, + const unsigned char *chars, size_t size) +{ + return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size); +} + +int tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p, + const char *f, int count); + +void tty_buffer_lock_exclusive(struct tty_port *port); +void tty_buffer_unlock_exclusive(struct tty_port *port); + +#endif /* _LINUX_TTY_FLIP_H */ |