/* ----------------------------------------------------------------------- * * * Copyright 2003-2009 H. Peter Anvin - All Rights Reserved * Copyright 2009-2010 Intel Corporation; author: H. Peter Anvin * Copyright 2010 Shao Miller * Copyright 2010-2012 Michal Soltys * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, * copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom * the Software is furnished to do so, subject to the following * conditions: * * The above copyright notice and this permission notice shall * be included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * ----------------------------------------------------------------------- */ /* * partiter.h * * Provides disk / partition iteration. */ #ifndef COM32_CHAIN_PARTITER_H #define COM32_CHAIN_PARTITER_H #include <stdint.h> #include <syslinux/disk.h> /* status */ enum {PI_ERRLOAD = -31, PI_INSANE, PI_OK = 0, PI_DONE}; /* flags */ enum {PIF_STEPALL = 1, PIF_PREFMBR = 2, PIF_STRICT = 4, PIF_STRICTER = 8}; struct itertype; struct part_iter; struct itertype { void (*dtor)(struct part_iter *); int (*next)(struct part_iter *); }; #define PI_GPTLABSIZE ((int)sizeof(((struct disk_gpt_part_entry *)0)->name)) struct part_iter { const struct itertype *type; char *data; char *record; uint64_t abs_lba; uint64_t length; int index0; /* including holes, from -1 (disk, then parts from 0) */ int index; /* excluding holes, from 0 (disk, then parts from 1), -1 means hole, if PIF_STEPALL is set */ int flags; /* flags, see #defines above */ int status; /* current status, see enums above */ struct disk_info di; union { struct { uint32_t disk_sig; /* 32bit disk signature as stored in MBR */ uint32_t bebr_lba; /* absolute lba of base extended partition */ uint32_t bebr_siz; /* size of base extended partition */ uint32_t cebr_lba; /* absolute lba of curr ext. partition */ uint32_t cebr_siz; /* size of curr ext. partition */ uint32_t nebr_lba; /* absolute lba of next ext. partition */ uint32_t nebr_siz; /* size of next ext. partition */ int bebr_index0; /* index of (0-3) of base ext. part., -1 if not present in MBR */ int logskipcnt; /* how many logical holes were skipped */ } dos; struct { struct guid disk_guid; struct guid part_guid; char part_label[PI_GPTLABSIZE/2+1]; int pe_count; int pe_size; uint64_t ufirst; uint64_t ulast; } gpt; }; }; extern const struct itertype * const typedos; extern const struct itertype * const typegpt; extern const struct itertype * const typeraw; struct part_iter *pi_begin(const struct disk_info *, int flags); void pi_del(struct part_iter **); /* inline virtuals */ static inline int pi_next(struct part_iter *iter) { return iter->type->next(iter); } static inline void pi_dtor(struct part_iter *iter) { iter->type->dtor(iter); } #endif /* vim: set ts=8 sts=4 sw=4 noet: */