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@ -826,14 +826,14 @@ static int sg_release_siblings(int sibling_fds[],
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static int sg_os_revalidate_disc(struct burn_drive *d)
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{
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/* <<< only for compiler tests */
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/* # def ine BURN_CDROM_SIMUL_CHANGE 0x5332 */
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#ifdef Libburn_use_linux_ioctl_simul_changE
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#ifdef CDROM_SIMUL_CHANGE
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#define BURN_CDROM_SIMUL_CHANGE CDROM_SIMUL_CHANGE
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/* <<< only for compiler tests */
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#ifndef CDROM_SIMUL_CHANGE
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/* # def ine CDROM_SIMUL_CHANGE 0x5332 */
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#endif
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#ifdef BURN_CDROM_SIMUL_CHANGE
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#ifdef CDROM_SIMUL_CHANGE
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int fd, ret;
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long old_blocks, new_blocks;
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@ -845,18 +845,26 @@ static int sg_os_revalidate_disc(struct burn_drive *d)
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if (ret == -1)
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old_blocks = -1;
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/* Schedule a simulated medium change event */
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ioctl(d->fd, BURN_CDROM_SIMUL_CHANGE, 0);
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/* Schedule a simulated medium change event.
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Although the implemented ioctl cannot fail, the kernel might be too
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old to know it and then throw errors like ENOTTY.
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*/
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ret = ioctl(d->fd, CDROM_SIMUL_CHANGE, 0);
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if (ret == -1) {
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libdax_msgs_submit(libdax_messenger, d->global_index,
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0x02, LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
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"ioctl(CDROM_SIMUL_CHANGE) failed", errno, 0);
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ret = 0; goto ex;
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}
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libdax_msgs_submit(libdax_messenger, d->global_index,
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0x00000002, LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
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"Emitted ioctl(CDROM_SIMUL_CHANGE)", 0, 0);
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0x02, LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
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"ioctl(CDROM_SIMUL_CHANGE) was performed", 0, 0);
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/* Try to trigger actual device assessment by a open(2) call */
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fd = open(d->devname, O_RDONLY | O_NDELAY);
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if (fd == -1) {
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libdax_msgs_submit(libdax_messenger, d->global_index,
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0x00000002, LIBDAX_MSGS_SEV_DEBUG,
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LIBDAX_MSGS_PRIO_HIGH,
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"Failed to open device file after ioctl(CDROM_SIMUL_CHANGE)",
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0x02, LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
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"Failed to open device file after ioctl(CDROM_SIMUL_CHANGE)",
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errno, 0);
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ret = 0; goto ex;
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}
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@ -864,8 +872,7 @@ static int sg_os_revalidate_disc(struct burn_drive *d)
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ret = ioctl(d->fd, BLKGETSIZE, &new_blocks);
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if (ret == -1) {
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libdax_msgs_submit(libdax_messenger, d->global_index,
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0x00000002, LIBDAX_MSGS_SEV_DEBUG,
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LIBDAX_MSGS_PRIO_HIGH,
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0x02, LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
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"BLKGETSIZE failed after ioctl(CDROM_SIMUL_CHANGE)",
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errno, 0);
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} else if (old_blocks != new_blocks) {
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@ -873,18 +880,24 @@ static int sg_os_revalidate_disc(struct burn_drive *d)
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"BLKGETSIZE indicates size change from %ld to %ld blocks",
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old_blocks , new_blocks);
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libdax_msgs_submit(libdax_messenger, d->global_index,
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0x00000002, LIBDAX_MSGS_SEV_DEBUG,
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LIBDAX_MSGS_PRIO_HIGH, msg, 0, 0);
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0x02, LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
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msg, 0, 0);
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}
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ex:
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BURN_FREE_MEM(msg);
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return 1;
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return ret;
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#else
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#else /* CDROM_SIMUL_CHANGE */
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return 0;
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#endif /* ! CDROM_SIMUL_CHANGE */
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#else /* Libburn_use_linux_ioctl_simul_changE */
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return 0;
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#endif /* BURN_CDROM_SIMUL_CHANGE */
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#endif /* ! Libburn_use_linux_ioctl_simul_changE */
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}
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