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getdtablecount.c
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imsg-buffer.c
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imsg.c
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imsg.h
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unistd.h
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Editing: imsg.h
/* $OpenBSD: imsg.h,v 1.3 2013/12/26 17:32:33 eric 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. * * $FreeBSD$ */ #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; u_int32_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 { u_int32_t type; u_int16_t len; u_int16_t flags; u_int32_t peerid; u_int32_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 *, u_int32_t, u_int32_t, pid_t, int, const void *, u_int16_t); int imsg_composev(struct imsgbuf *, u_int32_t, u_int32_t, pid_t, int, const struct iovec *, int); struct ibuf *imsg_create(struct imsgbuf *, u_int32_t, u_int32_t, pid_t, u_int16_t); int imsg_add(struct ibuf *, const void *, u_int16_t); void imsg_close(struct imsgbuf *, struct ibuf *); void imsg_free(struct imsg *); int imsg_flush(struct imsgbuf *); void imsg_clear(struct imsgbuf *); #endif
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