1 /*- 2 * Copyright (c) 2011-2015 Varnish Software AS 3 * All rights reserved. 4 * 5 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk> 6 * 7 * SPDX-License-Identifier: BSD-2-Clause 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 #ifdef CACHE_VGZ_H_INCLUDED 33 # error "Multiple includes of cache/cache_vgz.h" 34 #endif 35 #define CACHE_VGZ_H_INCLUDED 36 37 struct vgz; 38 39 enum vgzret_e { 40 VGZ_ERROR = -1, 41 VGZ_OK = 0, 42 VGZ_END = 1, 43 VGZ_STUCK = 2, 44 }; 45 46 enum vgz_flag { VGZ_NORMAL, VGZ_ALIGN, VGZ_RESET, VGZ_FINISH }; 47 // struct vgz *VGZ_NewUngzip(struct vsl_log *vsl, const char *id); 48 struct vgz *VGZ_NewGzip(struct vsl_log *vsl, const char *id); 49 void VGZ_Ibuf(struct vgz *, const void *, ssize_t len); 50 int VGZ_IbufEmpty(const struct vgz *vg); 51 void VGZ_Obuf(struct vgz *, void *, ssize_t len); 52 int VGZ_ObufFull(const struct vgz *vg); 53 enum vgzret_e VGZ_Gzip(struct vgz *, const void **, ssize_t *len, 54 enum vgz_flag); 55 // enum vgzret_e VGZ_Gunzip(struct vgz *, const void **, ssize_t *len); 56 enum vgzret_e VGZ_Destroy(struct vgz **); 57 58 enum vgz_ua_e { 59 VUA_UPDATE, // Update start/stop/last bits if changed 60 VUA_END_GZIP, // Record uncompressed size 61 VUA_END_GUNZIP, // Record uncompressed size 62 }; 63 64 void VGZ_UpdateObj(const struct vfp_ctx *, struct vgz*, enum vgz_ua_e); 65