144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
/*-
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* Copyright (c) 2004 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _GGATE_H_
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#define _GGATE_H_
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#include <sys/endian.h>
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#define G_GATE_BUFSIZE_START 65536
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#define G_GATE_PORT 3080
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#define G_GATE_RCVBUF 131072
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#define G_GATE_SNDBUF 131072
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#define G_GATE_QUEUE_SIZE 1024
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#define G_GATE_TIMEOUT 30
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extern int g_gate_devfd;
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extern int g_gate_verbose;
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/* Client's initial packet. */
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struct g_gate_cinit {
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char gc_path[PATH_MAX + 1];
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uint8_t gc_flags;
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};
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/* Server's initial packet. */
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struct g_gate_sinit {
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uint8_t gs_flags;
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uint64_t gs_mediasize;
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uint32_t gs_sectorsize;
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uint16_t gs_error;
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};
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/* Control struct. */
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struct g_gate_hdr {
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uint8_t gh_cmd; /* command */
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uint64_t gh_offset; /* device offset */
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uint32_t gh_length; /* size of block */
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int16_t gh_error; /* error value (0 if ok) */
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};
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void g_gate_vlog(int priority, const char *message, va_list ap);
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void g_gate_log(int priority, const char *message, ...);
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void g_gate_xvlog(const char *message, va_list ap);
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void g_gate_xlog(const char *message, ...);
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off_t g_gate_mediasize(int fd);
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size_t g_gate_sectorsize(int fd);
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void g_gate_open_device(void);
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void g_gate_close_device(void);
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void g_gate_ioctl(unsigned long req, void *data);
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void g_gate_destroy(int unit, int force);
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int g_gate_openflags(unsigned ggflags);
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void g_gate_load_module(void);
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#ifdef LIBGEOM
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void g_gate_list(int unit, int verbose);
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#endif
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in_addr_t g_gate_str2ip(const char *str);
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/*
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* g_gate_swap2h_* - functions swap bytes to host byte order (from big endian).
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* g_gate_swap2n_* - functions swap bytes to network byte order (actually
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* to big endian byte order).
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*/
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static __inline void
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g_gate_swap2h_cinit(struct g_gate_cinit *cinit __unused)
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{
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/* Nothing here for now. */
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}
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static __inline void
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g_gate_swap2n_cinit(struct g_gate_cinit *cinit __unused)
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{
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/* Nothing here for now. */
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}
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static __inline void
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g_gate_swap2h_sinit(struct g_gate_sinit *sinit)
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{
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/* Swap only used fields. */
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sinit->gs_mediasize = be64toh(sinit->gs_mediasize);
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sinit->gs_sectorsize = be32toh(sinit->gs_sectorsize);
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sinit->gs_error = be16toh(sinit->gs_error);
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}
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static __inline void
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g_gate_swap2n_sinit(struct g_gate_sinit *sinit)
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{
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/* Swap only used fields. */
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sinit->gs_mediasize = htobe64(sinit->gs_mediasize);
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sinit->gs_sectorsize = htobe32(sinit->gs_sectorsize);
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sinit->gs_error = htobe16(sinit->gs_error);
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}
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static __inline void
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g_gate_swap2h_hdr(struct g_gate_hdr *hdr)
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{
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/* Swap only used fields. */
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hdr->gh_offset = be64toh(hdr->gh_offset);
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hdr->gh_length = be32toh(hdr->gh_length);
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hdr->gh_error = be16toh(hdr->gh_error);
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}
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static __inline void
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g_gate_swap2n_hdr(struct g_gate_hdr *hdr)
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{
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/* Swap only used fields. */
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hdr->gh_offset = htobe64(hdr->gh_offset);
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hdr->gh_length = htobe32(hdr->gh_length);
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hdr->gh_error = htobe16(hdr->gh_error);
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}
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#endif /* _GGATE_H_ */
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