libisoburn/xorriso/drive_mgt.c

/* xorriso - creates, loads, manipulates and burns ISO 9660 filesystem images.

   Copyright 2007-2011 Thomas Schmitt, <scdbackup@gmx.net>

   Provided under GPL version 2 or later.

   This file contains functions which operate on drives and media.
*/

#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif

#include <ctype.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <time.h>
#include <errno.h>


#include "xorriso.h"
#include "xorriso_private.h"

#include "lib_mgt.h"
#include "drive_mgt.h"
#include "iso_img.h"
#include "sort_cmp.h"
#include "write_run.h"
#include "read_run.h"


static const char *un0(const char *text)
{
 if(text == NULL)
   return("");
 return(text);
}




int Xorriso_auto_driveadr(struct XorrisO *xorriso, char *adr, char *result,
                          int flag)
{
 int ret, is_known_mmc= 0;
 char *path_pt, *libburn_adr= NULL;
 char *abs_pt, *abs_adr= NULL;

 Xorriso_alloc_meM(libburn_adr, char, BURN_DRIVE_ADR_LEN + SfileadrL);
 Xorriso_alloc_meM(abs_adr, char, SfileadrL);
 path_pt= adr;
 if(strncmp(adr, "stdio:", 6) == 0)
   path_pt= adr + 6;
 else if(strncmp(adr, "mmc:", 4) == 0)
   path_pt= adr + 4;


 /* <<< replace by Xorriso_normalize_img_path() ? */;

 if(path_pt[0] != '/') {
   abs_pt= getcwd(abs_adr, SfileadrL - 1);
   if(abs_pt == NULL) {
     Xorriso_msgs_submit(xorriso, 0,
              "Relative drive path given. Cannot determine working directory.",
               errno, "FAILURE", 0);
     {ret= -1; goto ex;}
   }
   ret= Sfile_add_to_path(abs_adr, path_pt, 0);
   if(ret <= 0)
     {ret= -1; goto ex;}
 }

 is_known_mmc= burn_drive_convert_fs_adr(path_pt, libburn_adr);
 Xorriso_process_msg_queues(xorriso,0);

 ret= Xorriso_is_in_patternlist(xorriso, xorriso->drive_whitelist, path_pt, 0);
 if(ret > 0)
   goto ok;
 ret= Xorriso_is_in_patternlist(xorriso, xorriso->drive_blacklist, path_pt, 0);
 if(ret < 0)
   goto ex;
 if(ret) {
   strcpy(xorriso->info_text, "Drive address ");
   Text_shellsafe(adr, xorriso->info_text, 1);
   strcat(xorriso->info_text,
          " rejected because: -drive_class 'banned' ");
   Text_shellsafe(Xorriso_get_pattern(xorriso, xorriso->drive_blacklist,
                                      ret - 1, 0),
                  xorriso->info_text, 1);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
   {ret= 0; goto ex;}
 }
 /* if in greylist and not MMC and not stdio prefix: reject */
 if(is_known_mmc < 0)
   goto ex;
 if(adr == path_pt && !is_known_mmc) { /* no prefix, no MMC */
   ret= Xorriso_is_in_patternlist(xorriso, xorriso->drive_greylist, path_pt,0);
   if(ret < 0)
     goto ex;
   if(ret) {
     strcpy(xorriso->info_text, "Drive address ");
     Text_shellsafe(adr, xorriso->info_text, 1);
     strcat(xorriso->info_text,
            " rejected because: not MMC and -drive_class 'risky' ");
     Text_shellsafe(Xorriso_get_pattern(xorriso,xorriso->drive_greylist,
                                        ret - 1, 0),
                    xorriso->info_text, 1);
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
     Xorriso_msgs_submit(xorriso, 0,
                   "If the address is a legitimate target, prepend \"stdio:\"",
                   0, "HINT", 0);
     {ret= 0; goto ex;}
   }
 }
ok:;
 if(strncmp(adr, "mmc:", 4) == 0) {
   if(Sfile_str(result, path_pt, 0) <= 0)
     {ret= 0; goto ex;}
 } else if(adr == path_pt && is_known_mmc <= 0) {
   Sfile_str(result, "stdio:", 0);
   if(Sfile_str(result, adr, 1) <= 0)
     {ret= 0; goto ex;}
 } else {
   if(Sfile_str(result, adr, 0) <= 0)
     {ret= 0; goto ex;}
 }
 if(strncmp(result, "stdio:", 6)==0) {
   if(xorriso->ban_stdio_write) {
     strcpy(xorriso->info_text, "Drive address banned by -ban_stdio_write : ");
     Text_shellsafe(result, xorriso->info_text, 1);
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
     {ret= 0; goto ex;}
   }
 }
 ret= 1;
ex:;
 Xorriso_free_meM(libburn_adr);
 Xorriso_free_meM(abs_adr);
 return(ret);
}


/* @param flag bit0= aquire as isoburn input drive
               bit1= aquire as libburn output drive (as isoburn drive if bit0)
               bit2= regard overwriteable media as blank
               bit3= if the drive is a regular disk file: truncate it to
                     the write start address
               bit5= do not print toc
               bit6= do not calm down drive after aquiring it
   @return <=0 failure , 1= ok
           2=success, but not writeable with bit1
           3=success, but not blank and not ISO with bit0
*/
int Xorriso_aquire_drive(struct XorrisO *xorriso, char *adr, int flag)
{
 int ret, hret, not_writeable= 0, has_what, aquire_flag, load_lba, ext;
 int lba, track, session, params_flag, adr_mode, read_ret;
 uint32_t size, offst;
 struct burn_drive_info *dinfo= NULL, *out_dinfo, *in_dinfo;
 struct burn_drive *drive= NULL, *out_drive, *in_drive;
 enum burn_disc_status state;
 IsoImage *volset = NULL;
 IsoNode *root_node;
 struct isoburn_read_opts *ropts= NULL;
 char *libburn_adr= NULL, *boot_fate, *sev;
 size_t value_length;
 char *value= NULL;
 double num;
 char volid[33], *adr_data= NULL, *adr_pt;

 Xorriso_alloc_meM(libburn_adr, char, SfileadrL);
 Xorriso_alloc_meM(adr_data, char, 163);

 if((flag&3)==0) { 
   sprintf(xorriso->info_text, 
         "XORRISOBURN program error : Xorriso_aquire_drive bit0+bit1 not set");
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
   {ret= -1; goto ex;}
 }
 ret= Xorriso_give_up_drive(xorriso, (flag&3)|8);
 if(ret<=0)
   goto ex;
 if(flag & 1) 
   xorriso->isofs_st_out= time(0) - 1;

 ret= Xorriso_auto_driveadr(xorriso, adr, libburn_adr, 0);
 if(ret <= 0)
   goto ex;
 if(strcmp(libburn_adr,"stdio:/dev/fd/1")==0) {
   if(xorriso->dev_fd_1<0) {
     sprintf(xorriso->info_text,
     "-*dev \"stdio:/dev/fd/1\" was not a start argument. Cannot use it now.");
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
     {ret= 0; goto ex;}
   } else {
     sprintf(libburn_adr, "stdio:/dev/fd/%d", xorriso->dev_fd_1);
   }
 }

 if((flag&3)==1 && xorriso->out_drive_handle!=NULL) {
   ret= Xorriso_get_drive_handles(xorriso, &out_dinfo, &out_drive,
                         "on attempt to compare new indev with outdev", 2);
   if(ret<=0)
     goto ex;
   ret= burn_drive_equals_adr(out_drive, libburn_adr, 1);
   if(ret==1) {
     dinfo= out_dinfo;
     xorriso->indev_is_exclusive= xorriso->outdev_is_exclusive;
   }
 } else if((flag&3)==2 && xorriso->in_drive_handle!=NULL) {
   ret= Xorriso_get_drive_handles(xorriso, &in_dinfo, &in_drive,
                         "on attempt to compare new outdev with indev", 0);
   if(ret<=0)
     goto ex;
   ret= burn_drive_equals_adr(in_drive, libburn_adr, 1);
   if(ret==1) {
     dinfo= in_dinfo;
     xorriso->outdev_is_exclusive= xorriso->indev_is_exclusive;
   }
 }

 if(dinfo==NULL) {
   aquire_flag= 1 | ((flag&(8|4))>>1) | ((xorriso->toc_emulation_flag & 3)<<3);
   if(xorriso->toc_emulation_flag & 4)
     aquire_flag|= 128;
   if(!(xorriso->do_aaip & 1))
     aquire_flag|= 32;
   if((xorriso->ino_behavior & (1 | 2)) && !(xorriso->do_aaip & (4 | 32)))
     aquire_flag|= 64;
   burn_preset_device_open(xorriso->drives_exclusive, 0, 0);
   burn_allow_drive_role_4(1 | (xorriso->early_stdio_test & 14));
   ret= isoburn_drive_aquire(&dinfo, libburn_adr, aquire_flag);
   burn_preset_device_open(1, 0, 0);
   Xorriso_process_msg_queues(xorriso,0);
   if(ret<=0) {
     sprintf(xorriso->info_text,"Cannot aquire drive '%s'", adr); 
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
     ret= 0; goto ex;
   }

   state= isoburn_disc_get_status(dinfo[0].drive);
   ret= isoburn_get_img_partition_offset(dinfo[0].drive, &offst);
   if((state == BURN_DISC_APPENDABLE || state == BURN_DISC_FULL) && ret == 1) {
     sprintf(xorriso->info_text,
             "ISO image bears MBR with  -boot_image any partition_offset=%lu",
             (unsigned long) offst);
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
   }

   if(flag&1)
     if(xorriso->image_start_mode&(1<<31)) /* used up setting */
       xorriso->image_start_mode= 0; /* no need to perform auto setting */
   if(flag & 1)
     xorriso->indev_is_exclusive= xorriso->drives_exclusive;
   if(flag & 2)
     xorriso->outdev_is_exclusive= xorriso->drives_exclusive;
 }
 drive= dinfo[0].drive;
 state= isoburn_disc_get_status(drive);
 Xorriso_process_msg_queues(xorriso,0);
 if(flag&1) {
   if(xorriso->image_start_mode&(1<<31)) /* used up setting */
     xorriso->image_start_mode&= ~0xffff; /* perform auto setting */
   if((xorriso->image_start_mode&(1<<30))) { /* if enabled at all */
     adr_pt= xorriso->image_start_value;
     adr_mode= xorriso->image_start_mode & 0xffff;
     if(adr_mode == 4 && strlen(adr_pt) <= 80) {
       /* Convert volid search expression into lba */
       params_flag= 0;
       ret= Xorriso__bourne_to_reg(xorriso->image_start_value, adr_data, 0);
       if(ret == 1)
         params_flag|= 4;
       ret= isoburn_get_mount_params(drive, 4, adr_data, &lba, &track,
                                     &session, volid, params_flag);
       Xorriso_process_msg_queues(xorriso,0);
       if(ret <= 0)
         goto ex;
       if(session <= 0 || track <= 0 || ret == 2) {
         Xorriso_msgs_submit(xorriso, 0,
                "-load : Given address does not point to an ISO 9660 session",
                0, "FAILURE", 0);
         ret= 0; goto ex;
       }
       sprintf(volid, "%d", lba);
       adr_pt= volid;
       adr_mode= 3;
     }
     ret= isoburn_set_msc1(drive, adr_mode, adr_pt,
                           !!(xorriso->image_start_mode & (1<<16)));
     if(ret<=0)
       goto ex;
     if(xorriso->image_start_mode&(1<<31))
       xorriso->image_start_mode= 0; /* disable msc1 setting completely */
     else
       xorriso->image_start_mode|= (1<<31); /* mark as used up */
   }
 }
 if(flag&1) {
   volset= isoburn_get_attached_image(drive);
   if(volset != NULL) { /* The image object is already created */
     iso_image_unref(volset);
   }
 }

 if(flag&2) {
   xorriso->out_drive_handle= dinfo;
   if(Sfile_str(xorriso->outdev, adr, 0)<=0)
     {ret= -1; goto ex;}
   if(state != BURN_DISC_BLANK && state != BURN_DISC_APPENDABLE) {
     sprintf(xorriso->info_text, "Disc status unsuitable for writing");
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
     not_writeable= 1;
   }
 }
 if(flag&1) {
   xorriso->in_drive_handle= dinfo;
   if(Sfile_str(xorriso->indev, adr, 0)<=0)
     {ret= -1; goto ex;}
 } else if(flag&2) {
   if(xorriso->in_volset_handle==NULL) {
     /* No volume loaded: create empty one */
     ret= Xorriso_create_empty_iso(xorriso, 0);
     if(ret<=0)
       goto ex;
   } else {
     iso_image_ref((IsoImage *) xorriso->in_volset_handle);
     ret= isoburn_attach_image(drive, (IsoImage *) xorriso->in_volset_handle);
     if(ret<=0) {
       sprintf(xorriso->info_text,
               "Failed to attach ISO image object to outdev");
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
       {ret= -1; goto ex;}
     }
   }
   if(!(flag&32))
     Xorriso_toc(xorriso, 1 | 2 | 8);
   {ret= 1+not_writeable; goto ex;}
 }

 if(xorriso->in_volset_handle!=NULL)
   iso_image_unref((IsoImage *) xorriso->in_volset_handle);
 xorriso->in_volset_handle= NULL;
 Sectorbitmap_destroy(&(xorriso->in_sector_map), 0);
 Xorriso_destroy_hln_array(xorriso, 0);
 Xorriso_destroy_di_array(xorriso, 0);
 xorriso->boot_count= 0;

 /* check for invalid state */
 if(state != BURN_DISC_BLANK && state != BURN_DISC_APPENDABLE &&
    state != BURN_DISC_FULL) {
   sprintf(xorriso->info_text,
           "Disc status not blank and unsuitable for reading");
   sev= "FAILURE";
   if(xorriso->img_read_error_mode==2)
     sev= "FATAL";
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, sev, 0);
   Xorriso_give_up_drive(xorriso, 1|((flag&32)>>2));
   ret= 3; goto ex;
 }
 /* fill read opts */ 
 ret= isoburn_ropt_new(&ropts, 0);
 if(ret<=0)
   goto ex;

 ext= isoburn_ropt_noiso1999;
 if((xorriso->ino_behavior & (1 | 2)) && !(xorriso->do_aaip & (1 | 4 | 32))
    && !(xorriso->do_md5 & 1)) 
   ext|= isoburn_ropt_noaaip; 
 if(!(xorriso->do_aaip & 1)) 
   ext|= isoburn_ropt_noacl; 
 if(!(xorriso->do_aaip & 4))
   ext|= isoburn_ropt_noea; 
 if(xorriso->ino_behavior & 1)
   ext|= isoburn_ropt_noino;
 if(!(xorriso->do_md5 & 1))
   ext|= isoburn_ropt_nomd5;
 if(xorriso->do_md5 & 32)
   ext|= isoburn_ropt_nomd5tag;

 isoburn_ropt_set_extensions(ropts, ext);

 isoburn_ropt_set_default_perms(ropts, (uid_t) 0, (gid_t) 0, (mode_t) 0555);
 isoburn_ropt_set_input_charset(ropts, xorriso->in_charset);
 isoburn_ropt_set_auto_incharset(ropts, !!(xorriso->do_aaip & 512));
 isoburn_ropt_set_displacement(ropts, xorriso->displacement,
                                      xorriso->displacement_sign);
 
 Xorriso_set_image_severities(xorriso, 1); /* No DEBUG messages */
 Xorriso_pacifier_reset(xorriso, 0);
 isoburn_set_read_pacifier(drive, Xorriso__read_pacifier, (void *) xorriso);

 /* <<< Trying to work around too much tolerance on bad image trees.
        Better would be a chance to instruct libisofs what to do in
        case of image read errors. There is a risk to mistake other SORRYs.
 */
 if(xorriso->img_read_error_mode>0)
   iso_set_abort_severity("SORRY");

 if(state != BURN_DISC_BLANK) {
   ret= isoburn_disc_get_msc1(drive, &load_lba);
   if(ret > 0) {
     sprintf(xorriso->info_text,
             "Loading ISO image tree from LBA %d", load_lba);
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0); 
   }
   ret= Xorriso_assert_volid(xorriso, load_lba, 0);
   if(ret <= 0)
     goto ex;
 }

 read_ret= ret= isoburn_read_image(drive, ropts, &volset);

 /* <<< Resetting to normal thresholds */
 if(xorriso->img_read_error_mode>0)
   Xorriso_set_abort_severity(xorriso, 0);

 if(ret<=0) {
   Xorriso_process_msg_queues(xorriso,0);
   Xorriso_set_image_severities(xorriso, 0);
   Xorriso_give_up_drive(xorriso, 1|((flag&32)>>2));
   sprintf(xorriso->info_text,"Cannot read ISO image tree");
   sev= "FAILURE";
   if(xorriso->img_read_error_mode==2)
     sev= "FATAL";
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, sev, 0);
   if(read_ret == (int) ISO_SB_TREE_CORRUPTED && (xorriso->do_md5 & 1)) {
     Xorriso_msgs_submit(xorriso, 0,
"This might be false MD5 alarm if an add-on session was written by growisofs.",
        0, "HINT", 0);
     Xorriso_msgs_submit(xorriso, 0,
      "In this case you get an ISO image tree by option -md5 'load_check_off'",
        0, "HINT", 0);
   } else if(xorriso->img_read_error_mode!=0) {
     Xorriso_msgs_submit(xorriso, 0, "You might get a partial or altered ISO image tree by option -error_behavior 'image_loading' 'best_effort' if -abort_on is set to be tolerant enough.",
                         0, "HINT", 0);
   }


   ret= 3; goto ex;
 }
 Xorriso_pacifier_callback(xorriso, "nodes read", xorriso->pacifier_count, 0,
                           "", 1); /* report end count */
 xorriso->in_volset_handle= (void *) volset;
 xorriso->in_sector_map= NULL;
 Xorriso_set_image_severities(xorriso, 0);

 Xorriso_update_volid(xorriso, 0);
 strncpy(xorriso->application_id,
         un0(iso_image_get_application_id(volset)), 128);
 xorriso->application_id[128]= 0;
 strncpy(xorriso->publisher, un0(iso_image_get_publisher_id(volset)), 128);
 xorriso->publisher[128]= 0;
 strncpy(xorriso->system_id, un0(iso_image_get_system_id(volset)), 32);
 xorriso->system_id[32]= 0;
 strncpy(xorriso->volset_id, un0(iso_image_get_volset_id(volset)), 128);
 xorriso->volset_id[128]= 0;
 strncpy(xorriso->copyright_file,
         un0(iso_image_get_copyright_file_id(volset)), 37);
 xorriso->copyright_file[37]= 0;
 strncpy(xorriso->biblio_file, un0(iso_image_get_biblio_file_id(volset)), 37);
 xorriso->biblio_file[37]= 0;
 strncpy(xorriso->abstract_file,
         un0(iso_image_get_abstract_file_id(volset)), 37);
 xorriso->abstract_file[37]= 0;

 if(xorriso->out_drive_handle != NULL &&
    xorriso->out_drive_handle != xorriso->in_drive_handle) {
   ret= Xorriso_get_drive_handles(xorriso, &out_dinfo, &out_drive,
                         "on attempt to attach ISO image volset to outdev", 2);
   if(ret<=0)
     goto ex;
   iso_image_ref((IsoImage *) xorriso->in_volset_handle);
   isoburn_attach_image(out_drive, xorriso->in_volset_handle);
 }
 Xorriso_process_msg_queues(xorriso,0);
 isoburn_ropt_get_size_what(ropts, &size, &has_what);
 if(has_what & isoburn_ropt_has_el_torito) {
   if(xorriso->boot_image_bin_path[0])
     boot_fate= "replaced by new boot image";
   else if(xorriso->patch_isolinux_image & 1)
     boot_fate= "patched at boot info table";
   else if(xorriso->keep_boot_image)
     boot_fate= "kept unchanged";
   else
     boot_fate= "discarded";
   sprintf(xorriso->info_text,
         "Detected El-Torito boot information which currently is set to be %s",
         boot_fate);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0); 
   Xorriso_record_boot_info(xorriso, 0);
 }

 if(flag & 1) {
   /* Look for isofs.st and put it into xorriso->isofs_st_in */;
   root_node= (IsoNode *) iso_image_get_root(volset);
   ret= iso_node_lookup_attr(root_node, "isofs.st", &value_length, &value, 0);
   if(ret > 0) {
     if(value_length > 0) {
       sscanf(value, "%lf", &num);
       if(num > 0)
         xorriso->isofs_st_in= num;
     }
     free(value);
   }
 }

 if(!(flag&32)) {
   Xorriso_toc(xorriso, 1 | 8);
   if(xorriso->loaded_volid[0] != 0 &&
      (state == BURN_DISC_APPENDABLE || state == BURN_DISC_FULL)) {
       sprintf(xorriso->info_text,"Volume id    : '%s'\n",
               xorriso->loaded_volid);
       Xorriso_info(xorriso, 0);
   }
   if(strcmp(xorriso->loaded_volid, xorriso->volid) != 0 &&
      !xorriso->volid_default) {
     sprintf(xorriso->info_text, "New volume id: '%s'\n", xorriso->volid);
     Xorriso_info(xorriso, 0);
   }
 }

 ret= 1+not_writeable;
ex:
 Xorriso_process_msg_queues(xorriso,0);
 if(ret<=0) {
   hret= Xorriso_give_up_drive(xorriso, (flag&3)|((flag&32)>>2));
   if(hret<ret)
     ret= hret;
 } else {
   if(drive != NULL && (xorriso->do_calm_drive & 1) && !(flag & 64))
     burn_drive_snooze(drive, 0); /* No need to make noise from start */
 }
 if(ropts!=NULL)
   isoburn_ropt_destroy(&ropts, 0);
 Xorriso_free_meM(libburn_adr);
 Xorriso_free_meM(adr_data);
 return(ret);
}


/* @param flag bit0=input drive
               bit1=output drive
               bit2=eject
               bit3=no info message or toc
*/
int Xorriso_give_up_drive(struct XorrisO *xorriso, int flag)
{
 int in_is_out_too, ret, do_eject;
 struct burn_drive_info *dinfo;
 struct burn_drive *drive;
 
 in_is_out_too= (xorriso->in_drive_handle == xorriso->out_drive_handle);
 if((flag&4) && in_is_out_too && (flag&(1|2))) {
   if((flag&3)!=3) {
     sprintf(xorriso->info_text,"Giving up for -eject whole -dev ");
     Text_shellsafe(xorriso->indev, xorriso->info_text, 1);
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
   }
   flag|= 3; /* give up in/out drive to eject it */
 }
   
 if((flag&1) && xorriso->in_drive_handle != NULL) {
   Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                             "on attempt to give up drive", 0);

   if(!in_is_out_too) {
     do_eject= !!(flag&4);
     if((flag & 4) && !xorriso->indev_is_exclusive) {
       sprintf(xorriso->info_text,
               "Will not eject media in non-exclusively aquired input drive.");
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "WARNING", 0);
       do_eject= 0;
     }
     if(drive!=NULL)
       isoburn_drive_release(drive, do_eject);
     if(dinfo!=NULL)
       burn_drive_info_free(dinfo);
   }
   xorriso->in_drive_handle= NULL;
   xorriso->indev[0]= 0;

   if(xorriso->in_volset_handle!=NULL)
     iso_image_unref((IsoImage *) xorriso->in_volset_handle);
   xorriso->in_volset_handle= NULL;
   Sectorbitmap_destroy(&(xorriso->in_sector_map), 0);
   Xorriso_destroy_di_array(xorriso, 0);
   Xorriso_destroy_hln_array(xorriso, 0);
   xorriso->loaded_volid[0]= 0;
   xorriso->isofs_st_out= time(0) - 1;
   xorriso->isofs_st_in= 0;
   xorriso->volset_change_pending= 0;
   xorriso->no_volset_present= 0; 
   xorriso->loaded_boot_bin_lba= 0;
   xorriso->loaded_boot_cat_path[0]= 0;
   xorriso->boot_count= 0;
   in_is_out_too= 0;
 }
 if((flag&2) && xorriso->out_drive_handle!=NULL) {
   do_eject= !!(flag&4);
   if((flag & 4) && !xorriso->outdev_is_exclusive) {
     sprintf(xorriso->info_text,
             "Will not eject media in non-exclusively aquired drive.");
     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "WARNING", 0);
     do_eject= 0;
   }
   Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                             "on attempt to give up drive", 2);
   if(!in_is_out_too) {
     if(drive!=NULL)
       isoburn_drive_release(drive, do_eject);
     if(dinfo!=NULL)
       burn_drive_info_free(dinfo);
   }
   xorriso->out_drive_handle= NULL;
   xorriso->outdev[0]= 0;
 } else if((flag&1) && xorriso->out_drive_handle!=NULL) {
   ret= Xorriso_create_empty_iso(xorriso, 0);
   if(ret<=0)
     return(ret);
   if(!(flag&8)) {
     sprintf(xorriso->info_text,
             "Only the output drive remains. Created empty ISO image.\n");
     Xorriso_info(xorriso, 0);
     Xorriso_toc(xorriso, 1 | 2 | 8);
   }
 }
 Xorriso_process_msg_queues(xorriso,0);
 return(1);
}


int Xorriso_may_burn(struct XorrisO *xorriso, int flag)
{

 if(xorriso->outdev_is_exclusive)
   return(1);
 sprintf(xorriso->info_text, "The output drive was not aquired exclusively.");
 Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
 sprintf(xorriso->info_text, "A possible remedy is: -osirrox 'o_excl_on'");
 if(xorriso->outdev[0]) {
   strcat(xorriso->info_text," -outdev ");
   Text_shellsafe(xorriso->outdev, xorriso->info_text, 1);
 }
 Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "HINT", 0);
 return(0);
}


/* @param flag bit2=do not try to read ISO heads
*/
int Xorriso_toc_to_string(struct XorrisO *xorriso, char **toc_text, int flag)
{
 int ret, stack_handle, toc_ret, l;
 struct Xorriso_lsT *results= NULL, *infos= NULL, *lpt;

 *toc_text= NULL;
 ret= Xorriso_push_outlists(xorriso, &stack_handle, 1);
 if(ret <= 0)
   goto ex;
 toc_ret= Xorriso_toc(xorriso, flag & 4);
 ret= Xorriso_pull_outlists(xorriso, stack_handle, &results, &infos, 0);
 if(ret <= 0)
   goto ex;
 if(toc_ret <= 0)
   {ret= toc_ret; goto ex;}
 l= 0;
 for(lpt= results; lpt != NULL; lpt= Xorriso_lst_get_next(lpt, 0))
   l+= strlen(Xorriso_lst_get_text(lpt, 0));
 *toc_text= calloc(l + 1, 1);
 l= 0;
 for(lpt= results; lpt != NULL; lpt= Xorriso_lst_get_next(lpt, 0)) {
   strcpy((*toc_text) + l, Xorriso_lst_get_text(lpt, 0));
   l+= strlen(Xorriso_lst_get_text(lpt, 0));
 }
ex:;
 Xorriso_lst_destroy_all(&results, 0);
 Xorriso_lst_destroy_all(&infos, 0);
 return(ret);
}


/* @param flag bit0+1= what to aquire after giving up outdev
                       0=none, 1=indev, 2=outdev, 3=both
*/
int Xorriso_reaquire_outdev(struct XorrisO *xorriso, int flag)
{
 int ret, aq_flag;
 char *drive_name= NULL;

 Xorriso_alloc_meM(drive_name, char, SfileadrL);
 aq_flag= flag&3;
 strcpy(drive_name, xorriso->outdev);
 Xorriso_give_up_drive(xorriso, aq_flag);
 if(aq_flag==0) { 
   sprintf(xorriso->info_text,"Gave up -outdev ");
   Text_shellsafe(xorriso->outdev, xorriso->info_text, 1);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
   {ret= 1; goto ex;}
 }
 sprintf(xorriso->info_text,"Re-aquiring -outdev ");
 Text_shellsafe(drive_name, xorriso->info_text, 1);
 Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
 ret= Xorriso_aquire_drive(xorriso, drive_name, aq_flag); 
 if(ret<=0) {
   sprintf(xorriso->info_text,"Could not re-aquire -outdev ");
   Text_shellsafe(xorriso->outdev, xorriso->info_text, 1);
   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
   goto ex;
 }
 ret= 1;
ex:;
 Xorriso_free_meM(drive_name);
 return(ret);
}


/* @param flag
               bit3=report to info channel (else to result channel)
*/
int Xorriso_toc_line(struct XorrisO *xorriso, int flag)
{
 if(!(flag & 8)) {
   Xorriso_result(xorriso,0);
   return(1);
 }
 strcpy(xorriso->info_text, xorriso->result_line);
 Xorriso_info(xorriso, 0);
 return(1);
}


/* @param flag
               bit1=report about output drive
               bit3=report to info channel (else to result channel)
               bit4=do no report failure if no drive aquired
*/
int Xorriso_media_product(struct XorrisO *xorriso, int flag)
{
 int ret, profile_no;
 struct burn_drive_info *dinfo;
 struct burn_drive *drive;
 char *product_id= NULL, *media_code1= NULL, *media_code2= NULL;
 char *book_type= NULL, *manuf= NULL, profile_name[80], *respt;

 respt= xorriso->result_line;

 ret= Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                                "on attempt to print media product info",
                                 flag & (2 | 16));
 if(ret <= 0)
   return(ret);
 ret= burn_disc_get_media_id(drive, &product_id, &media_code1, &media_code2,
                             &book_type, 0);
 if(ret > 0) {
   ret= burn_disc_get_profile(drive, &profile_no, profile_name);
   if(ret <= 0)
     return(ret);
   sprintf(respt, "Media product: %s , ", product_id);
   manuf= burn_guess_manufacturer(profile_no, media_code1, media_code2, 0);
   if(manuf != NULL) {
     if(strncmp(manuf, "Unknown ", 8) == 0)
       sprintf(respt + strlen(respt), "(not found in manufacturer list)\n");
     else
       sprintf(respt + strlen(respt), "%s\n", manuf);
   } else
     sprintf(respt + strlen(respt), "(error during manufacturer lookup)\n");
   free(product_id);
   free(media_code1);
   free(media_code2);
   if(book_type != NULL)
     free(book_type);
   if(manuf != NULL)
     free(manuf);
   Xorriso_toc_line(xorriso, flag & 8);
 }
 Xorriso_process_msg_queues(xorriso,0);

 return(1);
}


/* @param flag bit0=short report form
               bit1=report about output drive
               bit2=do not try to read ISO heads
               bit3=report to info channel (else to result channel)
               bit4=do no report failure if no drive aquired
               bit5=only report "Drive current" and "Drive type"
               bit6=report "Media product" with bit0
               bit7=only report "Drive current"
*/
int Xorriso_toc(struct XorrisO *xorriso, int flag)
{
 int num_sessions= 0, num_tracks= 0, lba= 0, nwa= -1, pmin, psec, pframe, ret;
 int track_count= 0, session_no, track_no, profile_no= -1, track_size;
 int last_track_start= 0, last_track_size= -1, num_data= 0, is_data= 0;
 int is_inout_drive= 0, drive_role, status, num_formats, emul_lba;
 int not_recognizable= 0;
 char profile_name[80],*respt,*devadr, *typetext= "";
 struct burn_toc_entry toc_entry;
 struct burn_drive_info *dinfo;
 struct burn_multi_caps *caps= NULL;
 struct burn_drive *drive;
 enum burn_disc_status s;
 char mem_text[80];
 off_t start_byte= 0, num_free= 0, size;
 unsigned dummy;
 struct isoburn_toc_disc *disc= NULL;
 struct isoburn_toc_session **sessions;
 struct isoburn_toc_track **tracks;
 int image_blocks= 0;
 char volume_id[33];
 struct burn_toc_entry next_toc_entry;
/*
 int num_payload= 0, num_wasted= 0, num_nondata= 0;
*/

 ret= Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                                "on attempt to print Table Of Content",
                                 flag & (2 | 16));
 if(ret<=0)
   {ret= 0; goto ex;}

 respt= xorriso->result_line;

 if(strcmp(xorriso->indev, xorriso->outdev)==0)
   is_inout_drive= 1;
 if(flag&2)
   devadr= xorriso->outdev;
 else
   devadr= xorriso->indev;
 sprintf(respt, "Drive current: %s '%s'\n",
         (is_inout_drive ? "-dev" : (flag&2 ? "-outdev" : "-indev")),
         devadr);
 Xorriso_toc_line(xorriso, flag & 8);
 if(flag & 128)
   {ret= 1; goto ex;}
 sprintf(respt, "Drive type   : vendor '%s' product '%s' revision '%s'\n",
        dinfo[0].vendor, dinfo[0].product, dinfo[0].revision);
 if((flag & 32) | !(flag & 1))
   Xorriso_toc_line(xorriso, flag & 8);
 if(flag & 32)
   {ret= 1; goto ex;}
 
 ret= burn_disc_get_profile(drive, &profile_no, profile_name);
 s= isoburn_disc_get_status(drive);
 if(profile_no == 0x0002 && s == BURN_DISC_EMPTY)
   profile_no= 0;
 sprintf(respt, "Media current: ");
 drive_role= burn_drive_get_drive_role(drive);
 if (profile_no > 0 && ret > 0) {
   if (profile_name[0])
     sprintf(respt+strlen(respt), "%s", profile_name);
   else
     sprintf(respt+strlen(respt), "%4.4Xh", profile_no);
   if(drive_role==2)
     sprintf(respt+strlen(respt), ", overwriteable");
   else if(drive_role == 4)
     sprintf(respt+strlen(respt), ", random read-only");
   else if(drive_role == 5)
     sprintf(respt+strlen(respt), ", random write-only");
   else if(drive_role==0 || drive_role==3)
     sprintf(respt+strlen(respt), ", sequential");
   strcat(respt, "\n");
 } else {
    sprintf(respt+strlen(respt), "is not recognizable\n");
    not_recognizable= 1;
 }
 Xorriso_toc_line(xorriso, flag & 8);

 if((flag & 64) || !(flag & 1)) {
   Xorriso_media_product(xorriso, flag & (2 | 8 | 16));
   if(xorriso->request_to_abort)
     {ret= 1; goto ex;}
 }

 sprintf(respt, "Media status : ");
 if (s == BURN_DISC_FULL) {
   if(not_recognizable)
     sprintf(respt+strlen(respt), "is not recognizable\n");
   else
     sprintf(respt+strlen(respt), "is written , is closed");
 } else if (s == BURN_DISC_APPENDABLE) {
   sprintf(respt+strlen(respt), "is written , is appendable");
 } else if (s == BURN_DISC_BLANK) {
   sprintf(respt+strlen(respt), "is blank");
 } else if (s == BURN_DISC_EMPTY)
   sprintf(respt+strlen(respt), "is not present");
 else
   sprintf(respt+strlen(respt), "is not recognizable");
 if(s == BURN_DISC_APPENDABLE || s == BURN_DISC_BLANK) {
   ret= burn_disc_next_track_is_damaged(drive, 0);
   if(ret & 1)
     sprintf(respt+strlen(respt), " , but next track is damaged");
   else if(ret & 2)
     sprintf(respt+strlen(respt), " , but no writable address");
   else if(profile_no == 0x14) { /* DVD-RW sequential */
     ret= burn_disc_get_multi_caps(drive, BURN_WRITE_TAO, &caps, 0);
     if(ret == 0)
       sprintf(respt+strlen(respt), " , but will need -close on");
     if(caps != NULL)
       burn_disc_free_multi_caps(&caps);
   } else if(profile_no == 0x15) { /* DVD-RW DL */
     sprintf(respt+strlen(respt), " , but will need -close \"on\"");
   }
 }
 strcat(respt, "\n");
 Xorriso_toc_line(xorriso, flag & 8);

 if(s == BURN_DISC_BLANK) {
   sprintf(respt, "Media summary: 0 sessions, 0 data blocks, 0 data");
   num_free= isoburn_disc_available_space(drive, NULL); 
   Sfile_scale((double) num_free, mem_text,5,1e4,1);
   sprintf(respt+strlen(respt), ", %s free\n", mem_text);
   Xorriso_toc_line(xorriso, flag & 8);
 }
 if(s != BURN_DISC_FULL && s != BURN_DISC_APPENDABLE)
   {ret= 1; goto ex;}
 if(xorriso->request_to_abort)
   {ret= 1; goto ex;}

 if(!(flag & 2))
   Xorriso_show_boot_info(xorriso, 1 | (flag & 8) | ((flag & 1) << 1));

 disc= isoburn_toc_drive_get_disc(drive);
 if(flag & 4)
   sprintf(respt, "TOC layout   : %3s , %9s , %10s\n",
           "Idx", "sbsector", "Size");
 else
   sprintf(respt, "TOC layout   : %3s , %9s , %10s , %s\n",
           "Idx", "sbsector", "Size", "Volume Id");
 if(!(flag&1))
   Xorriso_toc_line(xorriso, flag & 8);

 if (disc==NULL) {
   Xorriso_process_msg_queues(xorriso,0);
   if(drive_role == 5 && s == BURN_DISC_APPENDABLE) {
     ret= burn_disc_track_lba_nwa(drive, NULL, 0, &lba, &nwa);
     if(ret != 1)
       lba= 0;
   } else {
     ret= isoburn_get_min_start_byte(drive, &start_byte, 0);
     nwa= start_byte / 2048;
     if(ret<=0) {
       Xorriso_process_msg_queues(xorriso,0);
       if(flag&1)
         {ret= 1; goto ex;}
       sprintf(xorriso->info_text, "Cannot obtain Table Of Content");
       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
       {ret= 0; goto ex;}
     }
   }

   /* fabricate TOC */
   typetext= "Other session";
   if(flag & 4) {
     ret= 0;
     typetext= "Session      ";
   } else
     ret= isoburn_read_iso_head(drive, 0, &image_blocks, volume_id, 1);