mirror of
https://github.com/tmux/tmux.git
synced 2024-11-16 01:18:52 +00:00
112 lines
3.0 KiB
C
112 lines
3.0 KiB
C
/* $OpenBSD: imsg.h,v 1.4 2017/03/24 09:34:12 nicm Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2006, 2007 Pierre-Yves Ritschard <pyr@openbsd.org>
|
|
* Copyright (c) 2006, 2007, 2008 Reyk Floeter <reyk@openbsd.org>
|
|
* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#ifndef _IMSG_H_
|
|
#define _IMSG_H_
|
|
|
|
#define IBUF_READ_SIZE 65535
|
|
#define IMSG_HEADER_SIZE sizeof(struct imsg_hdr)
|
|
#define MAX_IMSGSIZE 16384
|
|
|
|
struct ibuf {
|
|
TAILQ_ENTRY(ibuf) entry;
|
|
u_char *buf;
|
|
size_t size;
|
|
size_t max;
|
|
size_t wpos;
|
|
size_t rpos;
|
|
int fd;
|
|
};
|
|
|
|
struct msgbuf {
|
|
TAILQ_HEAD(, ibuf) bufs;
|
|
uint32_t queued;
|
|
int fd;
|
|
};
|
|
|
|
struct ibuf_read {
|
|
u_char buf[IBUF_READ_SIZE];
|
|
u_char *rptr;
|
|
size_t wpos;
|
|
};
|
|
|
|
struct imsg_fd {
|
|
TAILQ_ENTRY(imsg_fd) entry;
|
|
int fd;
|
|
};
|
|
|
|
struct imsgbuf {
|
|
TAILQ_HEAD(, imsg_fd) fds;
|
|
struct ibuf_read r;
|
|
struct msgbuf w;
|
|
int fd;
|
|
pid_t pid;
|
|
};
|
|
|
|
#define IMSGF_HASFD 1
|
|
|
|
struct imsg_hdr {
|
|
uint32_t type;
|
|
uint16_t len;
|
|
uint16_t flags;
|
|
uint32_t peerid;
|
|
uint32_t pid;
|
|
};
|
|
|
|
struct imsg {
|
|
struct imsg_hdr hdr;
|
|
int fd;
|
|
void *data;
|
|
};
|
|
|
|
|
|
/* buffer.c */
|
|
struct ibuf *ibuf_open(size_t);
|
|
struct ibuf *ibuf_dynamic(size_t, size_t);
|
|
int ibuf_add(struct ibuf *, const void *, size_t);
|
|
void *ibuf_reserve(struct ibuf *, size_t);
|
|
void *ibuf_seek(struct ibuf *, size_t, size_t);
|
|
size_t ibuf_size(struct ibuf *);
|
|
size_t ibuf_left(struct ibuf *);
|
|
void ibuf_close(struct msgbuf *, struct ibuf *);
|
|
int ibuf_write(struct msgbuf *);
|
|
void ibuf_free(struct ibuf *);
|
|
void msgbuf_init(struct msgbuf *);
|
|
void msgbuf_clear(struct msgbuf *);
|
|
int msgbuf_write(struct msgbuf *);
|
|
void msgbuf_drain(struct msgbuf *, size_t);
|
|
|
|
/* imsg.c */
|
|
void imsg_init(struct imsgbuf *, int);
|
|
ssize_t imsg_read(struct imsgbuf *);
|
|
ssize_t imsg_get(struct imsgbuf *, struct imsg *);
|
|
int imsg_compose(struct imsgbuf *, uint32_t, uint32_t, pid_t, int,
|
|
const void *, uint16_t);
|
|
int imsg_composev(struct imsgbuf *, uint32_t, uint32_t, pid_t, int,
|
|
const struct iovec *, int);
|
|
struct ibuf *imsg_create(struct imsgbuf *, uint32_t, uint32_t, pid_t, uint16_t);
|
|
int imsg_add(struct ibuf *, const void *, uint16_t);
|
|
void imsg_close(struct imsgbuf *, struct ibuf *);
|
|
void imsg_free(struct imsg *);
|
|
int imsg_flush(struct imsgbuf *);
|
|
void imsg_clear(struct imsgbuf *);
|
|
|
|
#endif
|