458 lines
9.7 KiB
C
458 lines
9.7 KiB
C
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/*
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cc -g -c \
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-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE \
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burn_wrap.c
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*/
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/* libburn wrappers for libisoburn
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Copyright 2007 Thomas Schmitt, <scdbackup@gmx.net>
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*/
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/* <<< A70929 : hardcoded CD-RW with fabricated -msinfo
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#define Hardcoded_cd_rW 1
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#define Hardcoded_cd_rw_c1 12999
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#define Hardcoded_cd_rw_nwA 152660
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <libburn/libburn.h>
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#include <libisofs/libisofs.h>
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#include "libisoburn.h"
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#include "isoburn.h"
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/* The global list of isoburn objects. Usually there is only one. */
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extern struct isoburn *isoburn_list_start; /* in isoburn.c */
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int isoburn_initialize(void)
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{
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if(!iso_init())
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return(0);
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if(!burn_initialize())
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return(0);
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isoburn_destroy_all(&isoburn_list_start, 0); /* isoburn_list_start= NULL */
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return(1);
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}
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/** Examine the media and sets appropriate emulation if needed.
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*/
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static int isoburn_welcome_media(struct isoburn **o, struct burn_drive *d,
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int flag)
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{
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int ret, lba, nwa;
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struct burn_multi_caps *caps= NULL;
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ret= burn_disc_get_multi_caps(d, BURN_WRITE_NONE, &caps, 0);
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if(ret<0) /* == 0 is read-only media, but it is too early to reject it here */
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goto ex;
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ret= isoburn_new(o, 0);
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if(ret<=0)
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goto ex;
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(*o)->drive= d;
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ret= isoburn_create_data_source(*o);
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if(ret<=0)
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goto ex;
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#ifdef Hardcoded_cd_rW
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/* <<< A70929 : hardcoded CD-RW with fabricated -msinfo */
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caps->start_adr= 0;
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(*o)->fabricated_disc_status= BURN_DISC_APPENDABLE;
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#endif
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if(caps->start_adr) { /* set emulation to overwriteable */
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(*o)->emulation_mode= 1;
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ret= isoburn_start_emulation(*o, 0);
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if(ret<=0) {
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(*o)->emulation_mode= -1;
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goto ex;
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}
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} else {
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/* >>> recognize unsuitable media (but allow read-only media) */;
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#ifdef Hardcoded_cd_rW
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(*o)->nwa= Hardcoded_cd_rw_nwA;
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#else
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ret= burn_disc_track_lba_nwa(d, NULL, 0, &lba, &nwa);
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if(ret>0)
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(*o)->nwa= nwa;
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#endif
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}
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ret= 1;
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ex:
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if(caps!=NULL)
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burn_disc_free_multi_caps(&caps);
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return(ret);
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}
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int isoburn_drive_scan_and_grab(struct burn_drive_info *drive_infos[],
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char *adr, int load)
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{
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int ret, conv_ret, drive_grabbed= 0;
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char libburn_drive_adr[BURN_DRIVE_ADR_LEN];
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struct isoburn *o= NULL;
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char msg[BURN_MSGS_MESSAGE_LEN+4096];
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conv_ret= burn_drive_convert_fs_adr(adr, libburn_drive_adr);
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if(conv_ret<=0) {
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sprintf(msg, "Unsuitable drive address: '%s'\n",adr);
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msg[BURN_MSGS_MESSAGE_LEN-1]= 0;
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burn_msgs_submit(0, msg, 0, "SORRY", NULL);
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ret= 0; goto ex;
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}
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ret= burn_drive_scan_and_grab(drive_infos, libburn_drive_adr, load);
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if(ret<=0)
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goto ex;
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drive_grabbed= 1;
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ret= isoburn_welcome_media(&o, (*drive_infos)[0].drive, 0);
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if(ret<=0)
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goto ex;
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ret= 1;
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ex:
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if(ret<=0) {
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if(drive_grabbed)
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burn_drive_release((*drive_infos)[0].drive, 0);
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isoburn_destroy(&o, 0);
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}
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return(ret);
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}
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int isoburn_drive_grab(struct burn_drive *drive, int load)
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{
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int ret;
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struct isoburn *o= NULL;
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ret= burn_drive_grab(drive, load);
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if(ret<=0)
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goto ex;
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ret= isoburn_welcome_media(&o, drive, 0);
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if(ret<=0)
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goto ex;
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ret= 1;
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ex:
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if(ret<=0)
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isoburn_destroy(&o,0);
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return(ret);
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}
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/** Retrieve media emulation and eventual isoburn emulator of drive.
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@return -1 unsuitable media, 0 generic media, 1 emulated media.
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*/
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int isoburn_find_emulator(struct isoburn **pt,
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struct burn_drive *drive, int flag)
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{
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int ret;
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ret= isoburn_find_by_drive(pt, drive, 0);
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if(ret<=0)
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return(0);
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if((*pt)->emulation_mode==-1)
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return(-1);
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if((*pt)->emulation_mode==0)
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return(0);
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return(1);
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}
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enum burn_disc_status isoburn_disc_get_status(struct burn_drive *drive)
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{
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int ret;
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struct isoburn *o;
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ret= isoburn_find_emulator(&o, drive, 0);
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if(ret<0)
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return(BURN_DISC_UNSUITABLE);
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if(o!=NULL)
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if(o->fabricated_disc_status!=BURN_DISC_UNREADY)
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return(o->fabricated_disc_status);
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if(ret==0)
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return(burn_disc_get_status(drive));
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/* emulated status */
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if(o->emulation_mode==-1)
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return(BURN_DISC_UNSUITABLE);
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if(o->nwa>0)
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return(BURN_DISC_APPENDABLE);
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return(BURN_DISC_BLANK);
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}
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int isoburn_disc_erasable(struct burn_drive *d)
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{
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int ret;
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struct isoburn *o;
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ret= isoburn_find_emulator(&o, d, 0);
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if(ret>0)
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if(o->emulation_mode==1)
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return(1);
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return burn_disc_erasable(d);
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}
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void isoburn_disc_erase(struct burn_drive *drive, int fast)
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{
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int ret;
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struct isoburn *o;
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ret= isoburn_find_emulator(&o, drive, 0);
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if(ret>0) {
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if(o->emulation_mode==-1) {
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/* To cause a negative reply with burn_drive_wrote_well() */
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burn_drive_cancel(drive);
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return;
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}
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if(o->emulation_mode>0) {
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ret= isoburn_invalidate_iso(o, 0);
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if(ret<=0)
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burn_drive_cancel(drive);
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return;
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}
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}
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burn_disc_erase(drive, fast);
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}
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int isoburn_disc_get_msc1(struct burn_drive *d, int *start_lba)
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{
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int ret;
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struct isoburn *o;
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#ifdef Hardcoded_cd_rW
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/* <<< A70929 : hardcoded CD-RW with fabricated -msinfo */
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*start_lba= Hardcoded_cd_rw_c1;
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return(1);
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#endif
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if(isoburn_disc_get_status(d)!=BURN_DISC_APPENDABLE &&
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isoburn_disc_get_status(d)!=BURN_DISC_FULL)
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return(0);
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ret= isoburn_find_emulator(&o, d, 0);
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if(ret<0)
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return(0);
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if(ret>0) if(o->emulation_mode>0) {
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*start_lba= 0;
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return(1);
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}
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return(burn_disc_get_msc1(d, start_lba));
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}
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int isoburn_disc_track_lba_nwa(struct burn_drive *d,
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struct burn_write_opts *opts,
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int trackno, int *lba, int *nwa)
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{
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int ret;
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struct isoburn *o;
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#ifdef Hardcoded_cd_rW
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/* <<< A70929 : hardcoded CD-RW with fabricated -msinfo */
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*lba= Hardcoded_cd_rw_c1;
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*nwa= Hardcoded_cd_rw_nwA;
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return(1);
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#endif
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ret= isoburn_find_emulator(&o, d, 0);
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if(ret<0)
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return(0);
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if(ret>0) if(o->emulation_mode>0) {
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*lba= 0;
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*nwa= o->nwa;
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return(1);
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}
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return(burn_disc_track_lba_nwa(d, opts, trackno, lba, nwa));
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}
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void isoburn_disc_write(struct burn_write_opts *opts, struct burn_disc *disc)
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{
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int ret;
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struct isoburn *o;
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struct burn_drive *drive;
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char reasons[BURN_REASONS_LEN],msg[160+BURN_REASONS_LEN];
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enum burn_write_types write_type;
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drive= burn_write_opts_get_drive(opts);
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ret= isoburn_find_emulator(&o, drive, 0);
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if(ret<0)
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return;
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if(o!=NULL) {
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o->wrote_well= -1;
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if(o->emulation_mode!=0) {
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burn_write_opts_set_multi(opts, 0);
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if(o->emulation_mode>0 && o->nwa >= 0)
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burn_write_opts_set_start_byte(opts, ((off_t) o->nwa) * (off_t) 2048);
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}
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}
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write_type= burn_write_opts_auto_write_type(opts, disc, reasons, 0);
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if (write_type == BURN_WRITE_NONE) {
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sprintf(msg, "Failed to find a suitable write mode:\n%s", reasons);
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burn_msgs_submit(0, msg, 0, "SORRY", NULL);
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if(o!=NULL)
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o->wrote_well= 0;
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/* To cause a negative reply with burn_drive_wrote_well() */
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burn_drive_cancel(drive);
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return;
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}
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/*
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sprintf(reasons, "%d", (int) write_type);
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fprintf(stderr, "isoburn_EXPERIMENTAL: write_type = %s\n",
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(write_type == BURN_WRITE_SAO ? "SAO" :
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(write_type == BURN_WRITE_TAO ? "TAO" : reasons)));
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*/
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#ifdef Hardcoded_cd_rW
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/* <<< A70929 : hardcoded CD-RW with fabricated -msinfo */
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fprintf(stderr, "Setting write address to LBA %d\n", Hardcoded_cd_rw_nwA);
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burn_write_opts_set_start_byte(opts,
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((off_t) Hardcoded_cd_rw_nwA) * (off_t) 2048);
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#endif
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burn_disc_write(opts, disc);
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}
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void isoburn_drive_release(struct burn_drive *drive, int eject)
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{
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int ret;
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struct isoburn *o;
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ret= isoburn_find_emulator(&o, drive, 0);
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if(ret<0)
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return;
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if(o!=NULL) {
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isoburn_free_data_source(o);
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isoburn_destroy(&o, 0);
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}
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burn_drive_release(drive, eject);
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}
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void isoburn_finish(void)
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{
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isoburn_destroy_all(&isoburn_list_start, 0);
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burn_finish();
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iso_finish();
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}
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int isoburn_needs_emulation(struct burn_drive *drive)
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{
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int ret;
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struct isoburn *o;
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enum burn_disc_status s;
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s= isoburn_disc_get_status(drive);
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if(s!=BURN_DISC_BLANK && s!=BURN_DISC_APPENDABLE)
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return(-1);
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ret= isoburn_find_emulator(&o, drive, 0);
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if(ret<0)
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return(-1);
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if(ret>0)
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if(o->emulation_mode>0)
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return(1);
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return(0);
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}
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int isoburn_set_start_byte(struct isoburn *o, off_t value, int flag)
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{
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int ret;
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struct burn_drive *drive = o->drive;
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struct burn_multi_caps *caps= NULL;
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ret= burn_disc_get_multi_caps(drive, BURN_WRITE_NONE, &caps, 0);
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if(ret<=0)
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goto ex;
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if(!caps->start_adr)
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{ret= 0; goto ex;}
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o->min_start_byte= value;
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if(value % caps->start_alignment)
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value+= caps->start_alignment - (value % caps->start_alignment);
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o->nwa= value/2048;
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/* If suitable for alignment, round up to full 16 sector addresses */
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if((o->nwa%16) && ((16*2048) % caps->start_alignment)==0 )
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o->nwa+= 16 - (o->nwa%16);
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ret= 1;
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ex:
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if(caps!=NULL)
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burn_disc_free_multi_caps(&caps);
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return(ret);
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}
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int isoburn_get_min_start_byte(struct burn_drive *d, off_t *start_byte,
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int flag)
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{
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int ret;
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struct isoburn *o;
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ret= isoburn_find_emulator(&o, d, 0);
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if(ret<0)
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return(-1);
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if(ret==0)
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return(0);
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*start_byte= o->min_start_byte;
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if(o->min_start_byte<=0)
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return(0);
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return(1);
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}
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int isoburn_drive_wrote_well(struct burn_drive *d)
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{
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int ret;
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struct isoburn *o;
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ret= isoburn_find_emulator(&o, d, 0);
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if(ret<0)
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return(-1);
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if(o!=NULL)
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if(o->wrote_well>=0)
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return(o->wrote_well);
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ret= burn_drive_wrote_well(d);
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return ret;
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}
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int isoburn_get_fifo_status(struct burn_drive *d, int *size, int *free_bytes,
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char **status_text)
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{
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int ret;
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struct isoburn *o;
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ret= isoburn_find_emulator(&o, d, 0);
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if(ret<0)
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return(-1);
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if(o==NULL)
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return(0);
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if(o->fifo==NULL)
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return(0);
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ret= burn_fifo_inquire_status(o->fifo, size, free_bytes, status_text);
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return(ret);
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}
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