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freebsd-skq/sys/fs/udf/ecma167-udf.h
yar ee7ffb561f In udf_find_partmaps(), when we find a type 1 partition map, we have to 
skip the actual type 1 length (6 bytes). With this change, it is now possible
to correctly spot the VAT partition map in certain discs.

Submitted by:	Pedro Martelletto <pedro@ambientworks.net>
2006-07-25 14:15:50 +00:00

375 lines
8.8 KiB
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/*-
* Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/* ecma167-udf.h */
/* Structure/definitions/constants a la ECMA 167 rev. 3 */
/* Tag identifiers */
enum {
TAGID_PRI_VOL = 1,
TAGID_ANCHOR = 2,
TAGID_VOL = 3,
TAGID_IMP_VOL = 4,
TAGID_PARTITION = 5,
TAGID_LOGVOL = 6,
TAGID_UNALLOC_SPACE = 7,
TAGID_TERM = 8,
TAGID_LOGVOL_INTEGRITY = 9,
TAGID_FSD = 256,
TAGID_FID = 257,
TAGID_FENTRY = 261
};
/* Descriptor tag [3/7.2] */
struct desc_tag {
uint16_t id;
uint16_t descriptor_ver;
uint8_t cksum;
uint8_t reserved;
uint16_t serial_num;
uint16_t desc_crc;
uint16_t desc_crc_len;
uint32_t tag_loc;
} __packed;
/* Recorded Address [4/7.1] */
struct lb_addr {
uint32_t lb_num;
uint16_t part_num;
} __packed;
/* Extent Descriptor [3/7.1] */
struct extent_ad {
uint32_t len;
uint32_t loc;
} __packed;
/* Short Allocation Descriptor [4/14.14.1] */
struct short_ad {
uint32_t len;
uint32_t pos;
} __packed;
/* Long Allocation Descriptor [4/14.14.2] */
struct long_ad {
uint32_t len;
struct lb_addr loc;
uint16_t ad_flags;
uint32_t ad_id;
} __packed;
/* Extended Allocation Descriptor [4/14.14.3] */
struct ext_ad {
uint32_t ex_len;
uint32_t rec_len;
uint32_t inf_len;
struct lb_addr ex_loc;
uint8_t reserved[2];
} __packed;
union icb {
struct short_ad s_ad;
struct long_ad l_ad;
struct ext_ad e_ad;
};
/* Character set spec [1/7.2.1] */
struct charspec {
uint8_t type;
uint8_t inf[63];
} __packed;
/* Timestamp [1/7.3] */
struct timestamp {
uint16_t type_tz;
uint16_t year;
uint8_t month;
uint8_t day;
uint8_t hour;
uint8_t minute;
uint8_t second;
uint8_t centisec;
uint8_t hund_usec;
uint8_t usec;
} __packed;
/* Entity Identifier [1/7.4] */
#define UDF_REGID_ID_SIZE 23
struct regid {
uint8_t flags;
uint8_t id[UDF_REGID_ID_SIZE];
uint8_t id_suffix[8];
} __packed;
/* ICB Tag [4/14.6] */
struct icb_tag {
uint32_t prev_num_dirs;
uint16_t strat_type;
uint8_t strat_param[2];
uint16_t max_num_entries;
uint8_t reserved;
uint8_t file_type;
struct lb_addr parent_icb;
uint16_t flags;
} __packed;
#define UDF_ICB_TAG_FLAGS_SETUID 0x40
#define UDF_ICB_TAG_FLAGS_SETGID 0x80
#define UDF_ICB_TAG_FLAGS_STICKY 0x100
/* Anchor Volume Descriptor Pointer [3/10.2] */
struct anchor_vdp {
struct desc_tag tag;
struct extent_ad main_vds_ex;
struct extent_ad reserve_vds_ex;
} __packed;
/* Volume Descriptor Pointer [3/10.3] */
struct vol_desc_ptr {
struct desc_tag tag;
uint32_t vds_number;
struct extent_ad next_vds_ex;
} __packed;
/* Primary Volume Descriptor [3/10.1] */
struct pri_vol_desc {
struct desc_tag tag;
uint32_t seq_num;
uint32_t pdv_num;
char vol_id[32];
uint16_t vds_num;
uint16_t max_vol_seq;
uint16_t ichg_lvl;
uint16_t max_ichg_lvl;
uint32_t charset_list;
uint32_t max_charset_list;
char volset_id[128];
struct charspec desc_charset;
struct charspec explanatory_charset;
struct extent_ad vol_abstract;
struct extent_ad vol_copyright;
struct regid app_id;
struct timestamp time;
struct regid imp_id;
uint8_t imp_use[64];
uint32_t prev_vds_lov;
uint16_t flags;
uint8_t reserved[22];
} __packed;
/* Logical Volume Descriptor [3/10.6] */
struct logvol_desc {
struct desc_tag tag;
uint32_t seq_num;
struct charspec desc_charset;
char logvol_id[128];
uint32_t lb_size;
struct regid domain_id;
union {
struct long_ad fsd_loc;
uint8_t logvol_content_use[16];
} _lvd_use;
uint32_t mt_l; /* Partition map length */
uint32_t n_pm; /* Number of partition maps */
struct regid imp_id;
uint8_t imp_use[128];
struct extent_ad integrity_seq_id;
uint8_t maps[1];
} __packed;
/* Type 1 Partition Map [3/10.7.2] */
struct part_map_1 {
uint8_t type;
uint8_t len;
uint16_t vol_seq_num;
uint16_t part_num;
} __packed;
#define UDF_PMAP_TYPE1_SIZE 6
/* Type 2 Partition Map [3/10.7.3] */
struct part_map_2 {
uint8_t type;
uint8_t len;
uint8_t part_id[62];
} __packed;
#define UDF_PMAP_TYPE2_SIZE 64
/* Virtual Partition Map [UDF 2.01/2.2.8] */
struct part_map_virt {
uint8_t type;
uint8_t len;
uint8_t reserved[2];
struct regid id;
uint16_t vol_seq_num;
uint16_t part_num;
uint8_t reserved1[24];
} __packed;
/* Sparable Partition Map [UDF 2.01/2.2.9] */
struct part_map_spare {
uint8_t type;
uint8_t len;
uint8_t reserved[2];
struct regid id;
uint16_t vol_seq_num;
uint16_t part_num;
uint16_t packet_len;
uint8_t n_st; /* Number of Sparing Tables */
uint8_t reserved1;
uint32_t st_size;
uint32_t st_loc[1];
} __packed;
union udf_pmap {
struct part_map_1 pm1;
struct part_map_2 pm2;
struct part_map_virt pmv;
struct part_map_spare pms;
};
/* Sparing Map Entry [UDF 2.01/2.2.11] */
struct spare_map_entry {
uint32_t org;
uint32_t map;
} __packed;
/* Sparing Table [UDF 2.01/2.2.11] */
struct udf_sparing_table {
struct desc_tag tag;
struct regid id;
uint16_t rt_l; /* Relocation Table len */
uint8_t reserved[2];
uint32_t seq_num;
struct spare_map_entry entries[1];
} __packed;
/* Partition Descriptor [3/10.5] */
struct part_desc {
struct desc_tag tag;
uint32_t seq_num;
uint16_t flags;
uint16_t part_num;
struct regid contents;
uint8_t contents_use[128];
uint32_t access_type;
uint32_t start_loc;
uint32_t part_len;
struct regid imp_id;
uint8_t imp_use[128];
uint8_t reserved[156];
} __packed;
/* File Set Descriptor [4/14.1] */
struct fileset_desc {
struct desc_tag tag;
struct timestamp time;
uint16_t ichg_lvl;
uint16_t max_ichg_lvl;
uint32_t charset_list;
uint32_t max_charset_list;
uint32_t fileset_num;
uint32_t fileset_desc_num;
struct charspec logvol_id_charset;
char logvol_id[128];
struct charspec fileset_charset;
char fileset_id[32];
char copyright_file_id[32];
char abstract_file_id[32];
struct long_ad rootdir_icb;
struct regid domain_id;
struct long_ad next_ex;
struct long_ad streamdir_icb;
uint8_t reserved[32];
} __packed;
/* File Identifier Descriptor [4/14.4] */
struct fileid_desc {
struct desc_tag tag;
uint16_t file_num;
uint8_t file_char;
uint8_t l_fi; /* Length of file identifier area */
struct long_ad icb;
uint16_t l_iu; /* Length of implementation use area */
uint8_t data[1];
} __packed;
#define UDF_FID_SIZE 38
#define UDF_FILE_CHAR_VIS (1 << 0) /* Visible */
#define UDF_FILE_CHAR_DIR (1 << 1) /* Directory */
#define UDF_FILE_CHAR_DEL (1 << 2) /* Deleted */
#define UDF_FILE_CHAR_PAR (1 << 3) /* Parent Directory */
#define UDF_FILE_CHAR_META (1 << 4) /* Stream metadata */
/* File Entry [4/14.9] */
struct file_entry {
struct desc_tag tag;
struct icb_tag icbtag;
uint32_t uid;
uint32_t gid;
uint32_t perm;
uint16_t link_cnt;
uint8_t rec_format;
uint8_t rec_disp_attr;
uint32_t rec_len;
uint64_t inf_len;
uint64_t logblks_rec;
struct timestamp atime;
struct timestamp mtime;
struct timestamp attrtime;
uint32_t ckpoint;
struct long_ad ex_attr_icb;
struct regid imp_id;
uint64_t unique_id;
uint32_t l_ea; /* Length of extended attribute area */
uint32_t l_ad; /* Length of allocation descriptors */
uint8_t data[1];
} __packed;
#define UDF_FENTRY_SIZE 176
#define UDF_FENTRY_PERM_USER_MASK 0x07
#define UDF_FENTRY_PERM_GRP_MASK 0xE0
#define UDF_FENTRY_PERM_OWNER_MASK 0x1C00
union dscrptr {
struct desc_tag tag;
struct anchor_vdp avdp;
struct vol_desc_ptr vdp;
struct pri_vol_desc pvd;
struct logvol_desc lvd;
struct part_desc pd;
struct fileset_desc fsd;
struct fileid_desc fid;
struct file_entry fe;
};
/* Useful defines */
#define GETICB(ad_type, fentry, offset) \
(struct ad_type *)&fentry->data[offset]
#define GETICBLEN(ad_type, icb) le32toh(((struct ad_type *)(icb))->len)
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