we can reaad CDROMS

kernel/drivers/iso/iso.c

@@ -0,0 +1,40 @@
+#include "iso.h"
+
+#include "drivers/ide/ide.h"
+
+#include "lib/print.h"
+#include "lib/memory.h"
+
+uint8_t sector_buf[2048];
+void read_iso(ide_device_t* dev) {
+    kprintf("Reading ISO Filesystem from CDROM Disk\n");
+
+    ide_read_blks(dev, 16, 1, sector_buf);
+    if (sector_buf[0] != 1) {
+        kprintf("Couldn't find PVD\n");
+        return;
+    }
+
+    iso_pvd_t pvd = *(iso_pvd_t*)sector_buf;
+
+    char pvd_identifier[6];
+    memcpy(pvd.header.identifier, pvd_identifier, 5);
+    pvd_identifier[5] = 0;
+
+    if (strcmp(pvd_identifier, "CD001") > 0) {
+        kprintf("Invalid PVD identifier\n");
+        return;
+    }
+
+    char system_identifier[33];
+    memcpy(&pvd.sys_ident[0], system_identifier, 32);
+    system_identifier[32] = 0;
+    if (strlen(system_identifier) > 0) {
+        kprintf("System Identifier: %s\n", system_identifier);
+    }
+    
+    char volume_identifier[33];
+    memcpy(&pvd.volume_ident[0], volume_identifier, 32);
+    volume_identifier[32] = 0;
+    kprintf("Volume Identifier: %s\n", volume_identifier);
+}

kernel/drivers/iso/iso.h

@@ -0,0 +1,33 @@
+#ifndef KISO_H
+#define KISO_H
+
+#include "drivers/ide/ide.h"
+
+typedef struct __attribute__((packed)) {
+    uint8_t type;
+    char identifier[5];
+    uint8_t version;
+} vd_header_t;
+
+typedef struct __attribute__((packed)) {
+    vd_header_t header;
+    uint8_t unused;
+    uint8_t sys_ident[32];
+    uint8_t volume_ident[32];
+    uint8_t unused_1[8];
+    uint32_t volume_space_sz_le;
+    uint32_t volume_space_sz_be;
+    uint8_t unused_2[32];
+    uint16_t vol_set_sz_le;
+    uint16_t vol_set_sz_be;
+    uint16_t vol_seq_num_le;
+    uint16_t vol_seq_num_be;
+    uint16_t logical_blk_sz_le;
+    uint16_t logical_blk_sz_be;
+    uint32_t path_table_sz_le;
+    uint32_t path_table_sz_be;
+} iso_pvd_t;
+
+void read_iso(ide_device_t* dev);
+
+#endif