More preparation for iso9660

1 files changed, 87 insertions, 0 deletions

diff --git a/src/kernel/include/fs/iso9660.h b/src/kernel/include/fs/iso9660.h
index 227a8da..fcaec1a 100644
--- a/src/kernel/include/fs/iso9660.h
+++ b/src/kernel/include/fs/iso9660.h
@@ -1,5 +1,92 @@
 #pragma once
 
+#include <vfs.h>
+
+#define ISO9660_VDT_BOOT	0
+#define ISO9660_VDT_PRIMARY 1
+#define ISO9660_VDT_SUPPLEMENTARY 2
+#define ISO9660_VDT_PARTITION 3
+#define ISO9660_VDT_TERMINATOR 255
+
+typedef struct {
+	uint32_t lsb, msb;
+} uint32_lsb_msb_t;
+
+typedef struct {
+	uint16_t lsb, msb;
+} uint16_lsb_msb_t;
+
+typedef struct {
+	uint8_t years_since_1990;
+	uint8_t month;
+	uint8_t day;
+	uint8_t hour;
+	uint8_t minute;
+	uint8_t second;
+	uint8_t gmt_offset;
+} iso9660_dr_date_t;
+
+typedef struct {		// Directory record
+	uint8_t len;		// length of the record
+	uint8_t ear_len;	// length of extended attribute record
+	uint32_lsb_msb_t lba_loc;	// location of extent
+	uint32_lsb_msb_t size;		// size of extent
+	iso9660_dr_date_t date;
+	uint8_t flags;
+	uint8_t interleave_unit_size;
+	uint8_t interleave_gap_size;
+	uint16_lsb_msb_t vol_seq_num;
+	uint8_t name_len;
+	char name[2];		// we want sizeof(iso9660_dr_t) == 34
+} iso9660_dr_t;
+
+typedef struct {		// Boot record
+	uint8_t type;
+	char ident[5];
+	uint8_t version;	// always 1
+	char sys_ident[32];
+	char boot_ident[32];
+	char reserved[1977];
+} iso9660_bootrecord_t;
+
+typedef struct {		// Primary volume descriptor
+	uint8_t type;
+	char ident[5];
+	uint8_t version;	// always 1
+
+	uint8_t unused0;
+
+	char sys_ident[32];
+	char vol_ident[32];
+
+	uint8_t unused1[8];
+
+	uint32_lsb_msb_t volume_size;
+	uint8_t unused2[32];
+
+	uint16_lsb_msb_t volume_set_size, volume_seq_number;
+	uint16_lsb_msb_t block_size;
+	uint32_lsb_msb_t path_table_size;
+	uint32_t lpt_loc, olpt_loc, mpt_loc, ompt_loc;	// location of path tables
+
+	iso9660_dr_t root_directory;
+
+	// more fields (not interesting...)
+} iso9660_pvd_t;
+
+typedef struct {
+	uint8_t type;
+	char ident[5];
+	uint8_t version;	// always 1
+} iso9660_vdt_terminator_t;		// volume descriptor table terminator
+
+typedef union {
+	iso9660_bootrecord_t boot;
+	iso9660_pvd_t prim;
+	iso9660_vdt_terminator_t term;
+	char buf[2048];
+} iso9660_vdt_entry_t;
+
 void register_iso9660_driver();
 
 /* vim: set ts=4 sw=4 tw=0 noet :*/