I am using Leonard Zubkoff's "mt" on a Linux-box and can *not* unload
a DAT cartridge if it is write-protected (slot-2 below).
lou1:/usr/src/mtx-1.1 # uname -a
Linux lou1 2.2.7 #12 Wed Sep 22 14:32:23 CDT 1999 i586 unknown
lou1:~ # ldd `which mtx`
libc.so.6 => /lib/libc.so.6 (0x40007000)
/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x2aaaa000)
lou1:/usr/src/mtx-1.1 #echo $TAPE
/dev/nst0
lou1:/usr/src/mtx-1.1 # ls -l /dev/nst0
crw-rw---- 1 root disk 9, 128 Apr 15 00:14 /dev/nst0
lou1:/usr/src/mtx-1.1 # mtx status
Data Transfer Element: Empty
Storage Element 1: Full
Storage Element 2: Full
Storage Element 3: Full
Storage Element 4: Full
lou1:/usr/src/mtx-1.1 # mtx load 1
Loading Storage Element 1 into Data Transfer Element...done
lou1:/usr/src/mtx-1.1 # mtx unload 1
Unloading Data Transfer Element into Storage Element 1...done
lou1:/usr/src/mtx-1.1 # mtx load 2
Loading Storage Element 2 into Data Transfer Element...done
lou1:/usr/src/mtx-1.1 # mtx unload 2
mtx: cannot open SCSI device '/dev/nst0' - Read-only file system
lou1:/usr/src/mtx-1.1 # mtx status
mtx: cannot open SCSI device '/dev/nst0' - Read-only file system
The error-message was from trying to open the tape-device in read/
write mode.
After making the following change:
static int SCSI_OpenDevice(char *DeviceName)
{
- int DeviceFD = open(DeviceName, O_RDWR);
+ int DeviceFD = open(DeviceName, O_RDONLY);
if (DeviceFD < 0)
FatalError("cannot open SCSI device '%s' - %m\n", DeviceName);
mtx seems to function properly.
Does anyone see any problem with my change.
Note: This problem did *not* occur with Linux 2.0.36, why I don't
know.
Thanks.
--
Louis-ljl-{[EMAIL PROTECTED]}
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