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git.proxmox.com Git - mirror_frr.git/blob - lib/imsg.h
4 * Copyright (c) 2006, 2007 Pierre-Yves Ritschard <pyr@openbsd.org>
5 * Copyright (c) 2006, 2007, 2008 Reyk Floeter <reyk@openbsd.org>
6 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
28 #define IBUF_READ_SIZE 65535
29 #define IMSG_HEADER_SIZE sizeof(struct imsg_hdr)
30 #define MAX_IMSGSIZE 16384
33 TAILQ_ENTRY(ibuf
) entry
;
43 TAILQ_HEAD(, ibuf
) bufs
;
49 uint8_t buf
[IBUF_READ_SIZE
];
55 TAILQ_ENTRY(imsg_fd
) entry
;
60 TAILQ_HEAD(, imsg_fd
) fds
;
85 struct ibuf
*ibuf_open(size_t);
86 struct ibuf
*ibuf_dynamic(size_t, size_t);
87 int ibuf_add(struct ibuf
*, const void *, size_t);
88 void *ibuf_reserve(struct ibuf
*, size_t);
89 void *ibuf_seek(struct ibuf
*, size_t, size_t);
90 size_t ibuf_size(struct ibuf
*);
91 size_t ibuf_left(struct ibuf
*);
92 void ibuf_close(struct msgbuf
*, struct ibuf
*);
93 int ibuf_write(struct msgbuf
*);
94 void ibuf_free(struct ibuf
*);
95 void msgbuf_init(struct msgbuf
*);
96 void msgbuf_clear(struct msgbuf
*);
97 int msgbuf_write(struct msgbuf
*);
98 void msgbuf_drain(struct msgbuf
*, size_t);
101 void imsg_init(struct imsgbuf
*, int);
102 ssize_t
imsg_read(struct imsgbuf
*);
103 ssize_t
imsg_get(struct imsgbuf
*, struct imsg
*);
104 int imsg_compose(struct imsgbuf
*, uint32_t, uint32_t, pid_t
, int, const void *,
106 int imsg_composev(struct imsgbuf
*, uint32_t, uint32_t, pid_t
, int,
107 const struct iovec
*, int);
108 struct ibuf
*imsg_create(struct imsgbuf
*, uint32_t, uint32_t, pid_t
, uint16_t);
109 int imsg_add(struct ibuf
*, const void *, uint16_t);
110 void imsg_close(struct imsgbuf
*, struct ibuf
*);
111 void imsg_free(struct imsg
*);
112 int imsg_flush(struct imsgbuf
*);
113 void imsg_clear(struct imsgbuf
*);