Date: Mon, 21 Feb 2022 11:44:27 +0100 (CET) From: Wojciech Puchar <wojtek@puchar.net> To: freebsd-hackers@freebsd.org Subject: problem with USB-CD drive Message-ID: <197d435-6c4b-a60-4e6f-ea4ee515b8f4@puchar.net>
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I wrote software for microcontroller with USB device port that presents itself as USB CD and includes ISO9660 image. It works under windows - "CD" is detected and files readable it works under MacOS - same It mostly works under FreeBSD. FreeBSD detects it properly ugen1.5: <Digital Systems DS700> at usbus1 umass0 on uhub5 umass0: <Digital Systems DS700, class 0/0, rev 1.10/28.01, addr 5> on usbus1 umass0: SCSI over Bulk-Only; quirks = 0x0100 umass0:3:0: Attached to scbus3 cd1 at umass-sim0 bus 0 scbus3 target 0 lun 0 cd1: <Digital DS700 Virtual CD 0128> Removable CD-ROM SCSI-2 device cd1: Serial Number 220123456789 cd1: 1.000MB/s transfers cd1: 16MB (8192 2048 byte sectors) cd1: quirks=0x10<10_BYTE_ONLY> i can read sectors by dd, by single (bs=2k) or multiple. Other communication (vendor specific SCSI commands - used to configure/control the device with our software) - works properly. If i make an image (first 34 sectors, device presents itself as 16MB to prevent problems with some OSes but everything later are zeros) - it is good - did cmp with original image file. i can do mdconfig, mount_cd9660 on this file and everything is fine. BUT mount_cd9660 /dev/cd1 /mnt results in: mount_cd9660: /dev/cd1: Invalid argument There is no kernel messages. How could i find out what is exactly a problem?
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