change scsi_ioctl to allow cd-recording 2.6.8.1
PATCH 1/1 change scsi_ioctl to allow cd-recording 2.6.8.1
Hello,
this is my first Email to the kernel-mailing list. I hope i have understand the howto-post-a-patch the right way.
As burning cd's as user is not possible with 2.6.8.1 without setting cdrecord setuid root and burning with k3b wont work at all, i decided to change driver/block/scsi_ioctl.c to allow it again. I allowed the commands listended in MMC-2 paper. Burning cds with k3b works now fine again, burning dvds should also work again.
regards
Andreas
Signature · 2 lines
gnuPG keyid: 0xE94F63B7 fingerprint: D189 D5E3 FF4B 7E24 E49D 7638 07C5 924C E94F 63B7
drivers/block/scsi_ioctl.c +37 -0
@@ -156,6 +156,35 @@safe_for_write (WRITE_16 ),safe_for_write (WRITE_BUFFER ),safe_for_write (WRITE_LONG ), + +/* Some defs for recording CDs */ + +/* obsolete: 0x01 REZERO_UNIT, 0x5c READ_BUFFER */ +/* used by k3b, but also work without */ + + +safe_for_read (GPCMD_GET_CONFIGURATION ), +safe_for_read (GPCMD_MODE_SELECT_10 ),/* read needed by k3b */ +safe_for_read (GPCMD_SET_SPEED ),/* obsolete but often used */ +safe_for_read (GPCMD_LOAD_UNLOAD ), + +safe_for_write (GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL ), +safe_for_write (GPCMD_FLUSH_CACHE ), +safe_for_write (GPCMD_CLOSE_TRACK ), +safe_for_write (GPCMD_FORMAT_UNIT ), +safe_for_write (GPCMD_BLANK ), +safe_for_write (GPCMD_READ_FORMAT_CAPACITIES ), +safe_for_write (GPCMD_RESERVE_RZONE_TRACK ), +safe_for_write (GPCMD_SEND_KEY ), +safe_for_write (GPCMD_SEND_OPC ), +safe_for_write (GPCMD_SET_STREAMING ), + +/* possibly needed: 0x5d SEND_CUE_SHEET/SEND_EVENT*/ +/* 0xbf SEND_DVD_STRUCTURE */ +/* but not defined yet in linux/cdrom.h */ + +safe_for_write (0x5d ), + safe_for_write(0xbf), };unsigned char type = cmd_type[cmd[0 ]];
@@ -173,6 +202,14 @@if (capable (CAP_SYS_RAWIO ))return 0 ; +/* Added for debugging*/ + +if (file->f_mode &FMODE_WRITE ) +printk (KERN_WARNING "SCSI-CMD Filter: 0x%x not allowed with write-mode\n" ,cmd[0 ]); +else +printk (KERN_WARNING "SCSI-CMD Filter: 0x%x not allowed with read-mode\n" ,cmd[0 ]); + +/* Otherwise fail it with an "Operation not permitted" */ return -EPERM ; }
[email protected] allows users to record cd's
PATCH 1/1 change scsi_ioctl to allow cd-recording 2.6.8.1
Hello,
please don't answer or refer to the previous message. Please look at the "Mis-detect CRDW as CDROM" thread.
Andreas
Signature · 2 lines
gnuPG keyid: 0xE94F63B7 fingerprint: D189 D5E3 FF4B 7E24 E49D 7638 07C5 924C E94F 63B7