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Issue 278: fix ModeSense(6) and ModeSense(10) (#280)

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* Change ModeSense(6) and ModeSense(10) to return proper length of data

* Fix size of block descripter returned from ModeSense(10)
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nsafran1217 2021-09-29 03:02:45 -04:00 committed by GitHub
parent 7e456b76bf
commit b3b740e3cc
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 36 additions and 22 deletions
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58
src/raspberrypi/devices/disk.cpp
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@ -784,6 +784,13 @@ int Disk::ModeSense6(const DWORD *cdb, BYTE *buf)
SetStatusCode(STATUS_INVALIDCDB);
return 0;
}
//check if size of data is more than size requested.
if (size > length) {
SetStatusCode(STATUS_INVALIDCDB);
return 0;
}
//Set length returned to actual size of data
length = size;
return length;
}
@ -838,20 +845,20 @@ int Disk::ModeSense10(const DWORD *cdb, BYTE *buf)
// Check LLBAA for short or long block descriptor
if ((cdb[1] & 0x10) == 0 || disk_blocks <= 0xFFFFFFFF) {
// Mode parameter header, block descriptor length
buf[3] = 0x08;
buf[7] = 0x08;
// Short LBA mode parameter block descriptor (number of blocks and block length)
buf[4] = disk_blocks >> 24;
buf[5] = disk_blocks >> 16;
buf[6] = disk_blocks >> 8;
buf[7] = disk_blocks;
buf[8] = disk_blocks >> 24;
buf[9] = disk_blocks >> 16;
buf[10] = disk_blocks >> 8;
buf[11] = disk_blocks;
buf[9] = disk_size >> 16;
buf[10] = disk_size >> 8;
buf[11] = disk_size;
buf[13] = disk_size >> 16;
buf[14] = disk_size >> 8;
buf[15] = disk_size;
size = 12;
size = 16;
}
else {
// Mode parameter header, LONGLBA
@ -862,21 +869,21 @@ int Disk::ModeSense10(const DWORD *cdb, BYTE *buf)
// Long LBA mode parameter block descriptor (number of blocks and block length)
buf[4] = disk_blocks >> 56;
buf[5] = disk_blocks >> 48;
buf[6] = disk_blocks >> 40;
buf[7] = disk_blocks >> 32;
buf[8] = disk_blocks >> 24;
buf[9] = disk_blocks >> 16;
buf[10] = disk_blocks >> 8;
buf[11] = disk_blocks;
buf[8] = disk_blocks >> 56;
buf[9] = disk_blocks >> 48;
buf[10] = disk_blocks >> 40;
buf[11] = disk_blocks >> 32;
buf[12] = disk_blocks >> 24;
buf[13] = disk_blocks >> 16;
buf[14] = disk_blocks >> 8;
buf[15] = disk_blocks;
buf[16] = disk_size >> 24;
buf[17] = disk_size >> 16;
buf[18] = disk_size >> 8;
buf[19] = disk_size;
buf[20] = disk_size >> 24;
buf[21] = disk_size >> 16;
buf[22] = disk_size >> 8;
buf[23] = disk_size;
size = 20;
size = 24;
}
}
}
@ -945,6 +952,13 @@ int Disk::ModeSense10(const DWORD *cdb, BYTE *buf)
SetStatusCode(STATUS_INVALIDCDB);
return 0;
}
//check if size of data is more than size requested.
if (size > length) {
SetStatusCode(STATUS_INVALIDCDB);
return 0;
}
//Set length returned to actual size of data
length = size;
return length;
}