mirror of https://github.com/mpv-player/mpv
699 lines
16 KiB
C
699 lines
16 KiB
C
#include "config.h"
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/*
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* Hacked version of the linux cdrom.c kernel module - everything except the
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* DVD handling ripped out and the rest rewritten to use raw SCSI commands
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* on BSD/OS 4.2 (but should work with earlier versions as well).
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*/
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#include <sys/types.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include </sys/dev/scsi/scsi.h>
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#include </sys/dev/scsi/scsi_ioctl.h>
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#include "bsdi_dvd.h"
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/*
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* Now get rid of the override/intercept macro so we can call the real ioctl()
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* routine!
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*/
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#undef ioctl
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#define CMD_READ_10 0x28
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#define CMD_READ_TOC_PMA_ATIP 0x43
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#define CMD_READ_CD 0xbe
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#define CMD_START_STOP_UNIT 0x1b
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#define CMD_SEND_KEY 0xa3
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#define CMD_REPORT_KEY 0xa4
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#define CMD_READ_DVD_STRUCTURE 0xad
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#define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
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#define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
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/* Define the Cdrom Generic Command structure */
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typedef struct cgc
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{
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u_char cdb[12];
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u_char *buf;
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int buflen;
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int rw;
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int timeout;
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scsi_user_sense_t *sus;
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} cgc_t;
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static int scsi_cmd(int, cgc_t *);
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static int cdrom_ioctl(int, u_long, void *);
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static int cdrom_tray_move(int, int);
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static int dvd_ioctl(int, u_long, void *);
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static int debug;
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void dvd_cdrom_debug(int flag)
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{
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debug = flag;
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}
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/*
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* This is the published entry point. Actually applications should simply
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* include <dvd.h> and not refer to this at all.
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*/
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int dvd_cdrom_ioctl(int fd, unsigned long cmd, void *arg)
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{
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switch (cmd)
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{
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case DVD_AUTH:
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case DVD_READ_STRUCT:
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return(dvd_ioctl(fd, cmd, arg));
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case CDROMREADTOCHDR:
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case CDROMREADTOCENTRY:
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case CDROMEJECT:
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case CDROMREADRAW:
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case CDROMREADMODE2:
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case CDROMCLOSETRAY:
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case CDROM_DRIVE_STATUS:
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return(cdrom_ioctl(fd, cmd, arg));
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default:
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return(ioctl(fd, cmd, arg));
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}
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}
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static void setup_report_key(cgc_t *cgc, u_int agid, u_int type)
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{
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cgc->cdb[0] = CMD_REPORT_KEY;
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cgc->cdb[10] = type | (agid << 6);
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switch (type)
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{
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case 0:
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case 5:
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case 8:
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cgc->buflen = 8;
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break;
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case 1:
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cgc->buflen = 16;
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break;
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case 2:
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case 4:
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cgc->buflen = 12;
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break;
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}
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cgc->cdb[9] = cgc->buflen;
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cgc->rw = SUC_READ;;
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}
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static void setup_send_key(cgc_t *cgc, u_int agid, u_int type)
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{
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cgc->cdb[0] = CMD_SEND_KEY;
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cgc->cdb[10] = type | (agid << 6);
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switch (type)
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{
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case 1:
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cgc->buflen = 16;
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break;
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case 3:
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cgc->buflen = 12;
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break;
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case 6:
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cgc->buflen = 8;
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break;
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}
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cgc->cdb[9] = cgc->buflen;
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cgc->rw = SUC_WRITE;
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}
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static void cgc_init(cgc_t *cgc, void *buf, int len, int type)
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{
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memset(cgc, 0, sizeof (*cgc));
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if (buf)
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memset(buf, 0, len);
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cgc->buf = (u_char *)buf;
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cgc->buflen = len;
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cgc->rw = type;
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cgc->timeout = 5; /* 5 second timeout */
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}
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static int dvd_do_auth(int fd, dvd_authinfo *ai)
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{
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int ret;
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u_char buf[20];
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cgc_t cgc;
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rpc_state_t rpc_state;
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memset(buf, 0, sizeof(buf));
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cgc_init(&cgc, buf, 0, SUC_READ);
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switch (ai->type)
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{
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case DVD_LU_SEND_AGID: /* LU data send */
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setup_report_key(&cgc, ai->lsa.agid, 0);
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if (ret = scsi_cmd(fd, &cgc))
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return ret;
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ai->lsa.agid = buf[7] >> 6;
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break;
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case DVD_LU_SEND_KEY1:
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setup_report_key(&cgc, ai->lsk.agid, 2);
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if (ret = scsi_cmd(fd, &cgc))
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return ret;
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copy_key(ai->lsk.key, &buf[4]);
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break;
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case DVD_LU_SEND_CHALLENGE:
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setup_report_key(&cgc, ai->lsc.agid, 1);
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if (ret = scsi_cmd(fd, &cgc))
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return ret;
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copy_chal(ai->lsc.chal, &buf[4]);
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break;
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case DVD_LU_SEND_TITLE_KEY: /* Post-auth key */
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setup_report_key(&cgc, ai->lstk.agid, 4);
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cgc.cdb[5] = ai->lstk.lba;
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cgc.cdb[4] = ai->lstk.lba >> 8;
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cgc.cdb[3] = ai->lstk.lba >> 16;
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cgc.cdb[2] = ai->lstk.lba >> 24;
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if (ret = scsi_cmd(fd, &cgc))
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return ret;
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ai->lstk.cpm = (buf[4] >> 7) & 1;
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ai->lstk.cp_sec = (buf[4] >> 6) & 1;
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ai->lstk.cgms = (buf[4] >> 4) & 3;
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copy_key(ai->lstk.title_key, &buf[5]);
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break;
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case DVD_LU_SEND_ASF:
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setup_report_key(&cgc, ai->lsasf.agid, 5);
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if (ret = scsi_cmd(fd, &cgc))
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return ret;
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ai->lsasf.asf = buf[7] & 1;
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break;
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case DVD_HOST_SEND_CHALLENGE: /* LU data receive (LU changes state) */
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setup_send_key(&cgc, ai->hsc.agid, 1);
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buf[1] = 0xe;
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copy_chal(&buf[4], ai->hsc.chal);
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if (ret = scsi_cmd(fd, &cgc))
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return ret;
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ai->type = DVD_LU_SEND_KEY1;
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break;
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case DVD_HOST_SEND_KEY2:
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setup_send_key(&cgc, ai->hsk.agid, 3);
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buf[1] = 0xa;
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copy_key(&buf[4], ai->hsk.key);
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if (ret = scsi_cmd(fd, &cgc))
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{
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ai->type = DVD_AUTH_FAILURE;
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return ret;
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}
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ai->type = DVD_AUTH_ESTABLISHED;
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break;
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case DVD_INVALIDATE_AGID:
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setup_report_key(&cgc, ai->lsa.agid, 0x3f);
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if (ret = scsi_cmd(fd, &cgc))
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return ret;
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break;
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case DVD_LU_SEND_RPC_STATE: /* Get region settings */
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setup_report_key(&cgc, 0, 8);
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memset(&rpc_state, 0, sizeof(rpc_state_t));
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cgc.buf = (char *) &rpc_state;
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if (ret = scsi_cmd(fd, &cgc))
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{
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ai->lrpcs.type = 0;
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ai->lrpcs.rpc_scheme = 0;
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}
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else
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{
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ai->lrpcs.type = rpc_state.type_code;
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ai->lrpcs.vra = rpc_state.vra;
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ai->lrpcs.ucca = rpc_state.ucca;
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ai->lrpcs.region_mask = rpc_state.region_mask;
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ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme;
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}
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break;
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case DVD_HOST_SEND_RPC_STATE: /* Set region settings */
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setup_send_key(&cgc, 0, 6);
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buf[1] = 6;
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buf[4] = ai->hrpcs.pdrc;
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if (ret = scsi_cmd(fd, &cgc))
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return ret;
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break;
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default:
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return EINVAL;
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}
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return 0;
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}
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static int dvd_read_physical(int fd, dvd_struct *s)
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{
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int ret, i;
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u_char buf[4 + 4 * 20], *base;
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struct dvd_layer *layer;
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cgc_t cgc;
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cgc_init(&cgc, buf, sizeof(buf), SUC_READ);
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cgc.cdb[0] = CMD_READ_DVD_STRUCTURE;
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cgc.cdb[6] = s->physical.layer_num;
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cgc.cdb[7] = s->type;
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cgc.cdb[9] = cgc.buflen & 0xff;
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if (ret = scsi_cmd(fd, &cgc))
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return ret;
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base = &buf[4];
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layer = &s->physical.layer[0];
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/* place the data... really ugly, but at least we won't have to
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worry about endianess in userspace or here. */
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for (i = 0; i < 4; ++i, base += 20, ++layer)
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{
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memset(layer, 0, sizeof(*layer));
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layer->book_version = base[0] & 0xf;
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layer->book_type = base[0] >> 4;
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layer->min_rate = base[1] & 0xf;
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layer->disc_size = base[1] >> 4;
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layer->layer_type = base[2] & 0xf;
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layer->track_path = (base[2] >> 4) & 1;
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layer->nlayers = (base[2] >> 5) & 3;
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layer->track_density = base[3] & 0xf;
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layer->linear_density = base[3] >> 4;
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layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
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layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
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layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
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layer->bca = base[16] >> 7;
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}
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return 0;
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}
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static int dvd_read_copyright(int fd, dvd_struct *s)
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{
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int ret;
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u_char buf[8];
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cgc_t cgc;
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cgc_init(&cgc, buf, sizeof(buf), SUC_READ);
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cgc.cdb[0] = CMD_READ_DVD_STRUCTURE;
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cgc.cdb[6] = s->copyright.layer_num;
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cgc.cdb[7] = s->type;
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cgc.cdb[8] = cgc.buflen >> 8;
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cgc.cdb[9] = cgc.buflen & 0xff;
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if (ret = scsi_cmd(fd, &cgc))
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return ret;
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s->copyright.cpst = buf[4];
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s->copyright.rmi = buf[5];
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return 0;
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}
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static int dvd_read_disckey(int fd, dvd_struct *s)
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{
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int ret, size;
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u_char *buf;
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cgc_t cgc;
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size = sizeof(s->disckey.value) + 4;
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if ((buf = (u_char *) malloc(size)) == NULL)
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return ENOMEM;
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cgc_init(&cgc, buf, size, SUC_READ);
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cgc.cdb[0] = CMD_READ_DVD_STRUCTURE;
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cgc.cdb[7] = s->type;
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cgc.cdb[8] = size >> 8;
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cgc.cdb[9] = size & 0xff;
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cgc.cdb[10] = s->disckey.agid << 6;
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if (!(ret = scsi_cmd(fd, &cgc)))
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memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value));
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free(buf);
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return ret;
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}
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static int dvd_read_bca(int fd, dvd_struct *s)
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{
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int ret;
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u_char buf[4 + 188];
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cgc_t cgc;
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cgc_init(&cgc, buf, sizeof(buf), SUC_READ);
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cgc.cdb[0] = CMD_READ_DVD_STRUCTURE;
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cgc.cdb[7] = s->type;
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cgc.cdb[9] = cgc.buflen = 0xff;
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if (ret = scsi_cmd(fd, &cgc))
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return ret;
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s->bca.len = buf[0] << 8 | buf[1];
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if (s->bca.len < 12 || s->bca.len > 188)
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return EIO;
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memcpy(s->bca.value, &buf[4], s->bca.len);
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return 0;
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}
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static int dvd_read_manufact(int fd, dvd_struct *s)
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{
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int ret = 0, size;
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u_char *buf;
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cgc_t cgc;
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size = sizeof(s->manufact.value) + 4;
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if ((buf = (u_char *) malloc(size)) == NULL)
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return ENOMEM;
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cgc_init(&cgc, buf, size, SUC_READ);
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cgc.cdb[0] = CMD_READ_DVD_STRUCTURE;
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cgc.cdb[7] = s->type;
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cgc.cdb[8] = size >> 8;
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cgc.cdb[9] = size & 0xff;
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if (ret = scsi_cmd(fd, &cgc))
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{
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free(buf);
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return ret;
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}
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s->manufact.len = buf[0] << 8 | buf[1];
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if (s->manufact.len < 0 || s->manufact.len > 2048)
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ret = -EIO;
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else
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memcpy(s->manufact.value, &buf[4], s->manufact.len);
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free(buf);
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return ret;
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}
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static int dvd_read_struct(int fd, dvd_struct *s)
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{
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switch (s->type)
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{
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case DVD_STRUCT_PHYSICAL:
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return dvd_read_physical(fd, s);
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case DVD_STRUCT_COPYRIGHT:
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return dvd_read_copyright(fd, s);
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case DVD_STRUCT_DISCKEY:
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return dvd_read_disckey(fd, s);
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case DVD_STRUCT_BCA:
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return dvd_read_bca(fd, s);
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case DVD_STRUCT_MANUFACT:
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return dvd_read_manufact(fd, s);
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default:
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return EINVAL;
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}
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}
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static u_char scsi_cdblen[8] = {6, 10, 10, 12, 12, 12, 10, 10};
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static int scsi_cmd(int fd, cgc_t *cgc)
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{
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int scsistatus, cdblen;
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unsigned char *cp;
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struct scsi_user_cdb suc;
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/* safety checks */
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if (cgc->rw != SUC_READ && cgc->rw != SUC_WRITE)
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return(EINVAL);
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suc.suc_flags = cgc->rw;
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cdblen = scsi_cdblen[(cgc->cdb[0] >> 5) & 7];
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suc.suc_cdblen = cdblen;
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bcopy(cgc->cdb, suc.suc_cdb, cdblen);
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suc.suc_data = cgc->buf;
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suc.suc_datalen = cgc->buflen;
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suc.suc_timeout = cgc->timeout;
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if (ioctl(fd, SCSIRAWCDB, &suc) == -1)
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return(errno);
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scsistatus = suc.suc_sus.sus_status;
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/*
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* If the device returns a scsi sense error and debugging is enabled print
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* some hopefully useful information on stderr.
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*/
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if (scsistatus && debug)
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{
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cp = suc.suc_sus.sus_sense;
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fprintf(stderr,"scsistatus = %x cmd = %x\n",
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scsistatus, cgc->cdb[0]);
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fprintf(stderr, "sense %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x\n",
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cp[0], cp[1], cp[2], cp[3], cp[4], cp[5],
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cp[6], cp[7], cp[8], cp[9], cp[10], cp[11],
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cp[12], cp[13], cp[14], cp[15]);
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}
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if (cgc->sus)
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bcopy(&suc.suc_sus, cgc->sus, sizeof (struct scsi_user_sense));
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if (scsistatus)
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return(EIO); /* generic i/o error for unsuccessful status */
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return(0);
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}
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/*
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* The entry point for the DVDioctls for BSD/OS.
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*/
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static int dvd_ioctl(int fd, u_long cmd, void *arg)
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{
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int ret;
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switch (cmd)
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{
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case DVD_READ_STRUCT:
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ret = dvd_read_struct(fd, (dvd_struct *)arg);
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if (ret)
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errno = ret;
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return(ret ? -1 : 0);
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case DVD_AUTH:
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ret = dvd_do_auth (fd, (dvd_authinfo *)arg);
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if (ret)
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errno = ret;
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return(ret ? -1 : 0);
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default:
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errno = EINVAL;
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return(-1);
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}
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}
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/*
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* The entry point for the CDROMioctls for BSD/OS
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*/
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static int cdrom_read_block(int, cgc_t *, int, int, int, int);
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static int cdrom_read_cd(int, cgc_t *, int, int, int );
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int cdrom_blocksize(int, int );
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static inline
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int msf_to_lba(char m, char s, char f)
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{
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return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
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}
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cdrom_ioctl(int fd, u_long cmd, void *arg)
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{
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int ret;
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cgc_t cgc;
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switch (cmd)
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{
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case CDROMREADRAW:
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case CDROMREADMODE1:
|
|
case CDROMREADMODE2:
|
|
{
|
|
struct cdrom_msf *msf;
|
|
int blocksize = 0, format = 0, lba;
|
|
|
|
switch (cmd)
|
|
{
|
|
case CDROMREADRAW:
|
|
blocksize = CD_FRAMESIZE_RAW;
|
|
break;
|
|
case CDROMREADMODE1:
|
|
blocksize = CD_FRAMESIZE;
|
|
format = 2;
|
|
break;
|
|
case CDROMREADMODE2:
|
|
blocksize = CD_FRAMESIZE_RAW0;
|
|
break;
|
|
}
|
|
msf = (struct cdrom_msf *)arg;
|
|
lba = msf_to_lba(msf->cdmsf_min0,msf->cdmsf_sec0,
|
|
msf->cdmsf_frame0);
|
|
ret = EINVAL;
|
|
if (lba < 0)
|
|
break;
|
|
|
|
cgc_init(&cgc, arg, blocksize, SUC_READ);
|
|
ret = cdrom_read_block(fd, &cgc, lba, 1, format, blocksize);
|
|
if (ret)
|
|
{
|
|
/*
|
|
* SCSI-II devices are not required to support CMD_READ_CD (which specifies
|
|
* the blocksize to read) so try switching the block size with a mode select,
|
|
* doing the normal read sector command and then changing the sector size back
|
|
* to 2048.
|
|
*
|
|
* If the program dies before changing the blocksize back sdopen()
|
|
* in the kernel will fail opens with a message that looks something like:
|
|
*
|
|
* "sr1: blksize 2336 not multiple of 512: cannot use"
|
|
*
|
|
* At that point the drive has to be power cycled (or reset in some other way).
|
|
*/
|
|
if (ret = cdrom_blocksize(fd, blocksize))
|
|
break;
|
|
ret = cdrom_read_cd(fd, &cgc, lba, blocksize, 1);
|
|
ret |= cdrom_blocksize(fd, 2048);
|
|
}
|
|
break;
|
|
}
|
|
case CDROMREADTOCHDR:
|
|
{
|
|
struct cdrom_tochdr *tochdr = (struct cdrom_tochdr *) arg;
|
|
u_char buffer[12];
|
|
|
|
cgc_init(&cgc, buffer, sizeof (buffer), SUC_READ);
|
|
cgc.cdb[0] = CMD_READ_TOC_PMA_ATIP;
|
|
cgc.cdb[1] = 0x2; /* MSF */
|
|
cgc.cdb[8] = 12; /* LSB of length */
|
|
|
|
ret = scsi_cmd(fd, &cgc);
|
|
if (!ret)
|
|
{
|
|
tochdr->cdth_trk0 = buffer[2];
|
|
tochdr->cdth_trk1 = buffer[3];
|
|
}
|
|
break;
|
|
}
|
|
case CDROMREADTOCENTRY:
|
|
{
|
|
struct cdrom_tocentry *tocentry = (struct cdrom_tocentry *) arg;
|
|
u_char buffer[12];
|
|
|
|
cgc_init(&cgc, buffer, sizeof (buffer), SUC_READ);
|
|
cgc.cdb[0] = CMD_READ_TOC_PMA_ATIP;
|
|
cgc.cdb[1] = (tocentry->cdte_format == CDROM_MSF) ? 0x02 : 0;
|
|
cgc.cdb[6] = tocentry->cdte_track;
|
|
cgc.cdb[8] = 12; /* LSB of length */
|
|
|
|
ret = scsi_cmd(fd, &cgc);
|
|
if (ret)
|
|
break;
|
|
|
|
tocentry->cdte_ctrl = buffer[5] & 0xf;
|
|
tocentry->cdte_adr = buffer[5] >> 4;
|
|
tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04) ? 1 : 0;
|
|
if (tocentry->cdte_format == CDROM_MSF)
|
|
{
|
|
tocentry->cdte_addr.msf.minute = buffer[9];
|
|
tocentry->cdte_addr.msf.second = buffer[10];
|
|
tocentry->cdte_addr.msf.frame = buffer[11];
|
|
}
|
|
else
|
|
tocentry->cdte_addr.lba = (((((buffer[8] << 8)
|
|
+ buffer[9]) << 8)
|
|
+ buffer[10]) << 8)
|
|
+ buffer[11];
|
|
break;
|
|
}
|
|
case CDROMEJECT: /* NO-OP for now */
|
|
ret = cdrom_tray_move(fd, 1);
|
|
break;
|
|
case CDROMCLOSETRAY:
|
|
ret = cdrom_tray_move(fd, 0);
|
|
break;
|
|
/*
|
|
* This sucks but emulates the expected behaviour. Instead of the return
|
|
* value being the actual status a success/fail indicator should have been
|
|
* returned and the 3rd arg to the ioctl should have been an 'int *' to update
|
|
* with the actual status.
|
|
*/
|
|
case CDROM_DRIVE_STATUS:
|
|
return(CDS_NO_INFO);
|
|
break;
|
|
}
|
|
errno = ret;
|
|
return(ret ? -1 : 0);
|
|
}
|
|
|
|
static int cdrom_read_cd(int fd, cgc_t *cgc, int lba, int blocksize, int nblocks)
|
|
{
|
|
|
|
memset(&cgc->cdb, 0, sizeof(cgc->cdb));
|
|
cgc->cdb[0] = CMD_READ_10;
|
|
cgc->cdb[2] = (lba >> 24) & 0xff;
|
|
cgc->cdb[3] = (lba >> 16) & 0xff;
|
|
cgc->cdb[4] = (lba >> 8) & 0xff;
|
|
cgc->cdb[5] = lba & 0xff;
|
|
cgc->cdb[6] = (nblocks >> 16) & 0xff;
|
|
cgc->cdb[7] = (nblocks >> 8) & 0xff;
|
|
cgc->cdb[8] = nblocks & 0xff;
|
|
cgc->buflen = blocksize * nblocks;
|
|
return(scsi_cmd(fd, cgc));
|
|
}
|
|
|
|
static int cdrom_read_block(int fd, cgc_t *cgc,
|
|
int lba, int nblocks, int format, int blksize)
|
|
{
|
|
|
|
memset(&cgc->cdb, 0, sizeof(cgc->cdb));
|
|
cgc->cdb[0] = CMD_READ_CD;
|
|
/* expected sector size - cdda,mode1,etc. */
|
|
cgc->cdb[1] = format << 2;
|
|
/* starting address */
|
|
cgc->cdb[2] = (lba >> 24) & 0xff;
|
|
cgc->cdb[3] = (lba >> 16) & 0xff;
|
|
cgc->cdb[4] = (lba >> 8) & 0xff;
|
|
cgc->cdb[5] = lba & 0xff;
|
|
/* number of blocks */
|
|
cgc->cdb[6] = (nblocks >> 16) & 0xff;
|
|
cgc->cdb[7] = (nblocks >> 8) & 0xff;
|
|
cgc->cdb[8] = nblocks & 0xff;
|
|
cgc->buflen = blksize * nblocks;
|
|
|
|
/* set the header info returned */
|
|
switch (blksize)
|
|
{
|
|
case CD_FRAMESIZE_RAW0:
|
|
cgc->cdb[9] = 0x58;
|
|
break;
|
|
case CD_FRAMESIZE_RAW1:
|
|
cgc->cdb[9] = 0x78;
|
|
break;
|
|
case CD_FRAMESIZE_RAW:
|
|
cgc->cdb[9] = 0xf8;
|
|
break;
|
|
default:
|
|
cgc->cdb[9] = 0x10;
|
|
}
|
|
return(scsi_cmd(fd, cgc));
|
|
}
|
|
|
|
static int cdrom_tray_move(int fd, int flag)
|
|
{
|
|
cgc_t cgc;
|
|
|
|
cgc_init(&cgc, NULL, 0, SUC_READ);
|
|
cgc.cdb[0] = CMD_START_STOP_UNIT;
|
|
cgc.cdb[1] = 1; /* immediate */
|
|
cgc.cdb[4] = flag ? 0x2 : 0x3; /* eject : close */
|
|
return(scsi_cmd(fd, &cgc));
|
|
}
|
|
|
|
/*
|
|
* Required when we need to use READ_10 to issue other than 2048 block
|
|
* reads
|
|
*/
|
|
int cdrom_blocksize(int fd, int size)
|
|
{
|
|
cgc_t cgc;
|
|
struct modesel_head mh;
|
|
|
|
memset(&mh, 0, sizeof(mh));
|
|
mh.block_desc_length = 0x08;
|
|
mh.block_length_med = (size >> 8) & 0xff;
|
|
mh.block_length_lo = size & 0xff;
|
|
|
|
memset(&cgc, 0, sizeof(cgc));
|
|
cgc.cdb[0] = 0x15;
|
|
cgc.cdb[1] = 1 << 4;
|
|
cgc.cdb[4] = 12;
|
|
cgc.buflen = sizeof(mh);
|
|
cgc.buf = (u_char *) &mh;
|
|
cgc.rw = SUC_WRITE;
|
|
mh.block_desc_length = 0x08;
|
|
mh.block_length_med = (size >> 8) & 0xff;
|
|
mh.block_length_lo = size & 0xff;
|
|
return(scsi_cmd(fd, &cgc));
|
|
}
|