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Kernel: Add ioctl request for getting a storage device's block size

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David Isaksson 2021-10-09 11:19:51 +02:00 committed by Andreas Kling
parent 8d631dcd5e
commit b2e57f555b
Notes: sideshowbarker 2024-07-18 02:54:04 +09:00 
Author: https://github.com/Granddave
Commit: https://github.com/SerenityOS/serenity/commit/b2e57f555b2
Pull-request: https://github.com/SerenityOS/serenity/pull/10401
Reviewed-by: https://github.com/supercomputer7
2 changed files with 7 additions and 0 deletions
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5
Kernel/Storage/StorageDevice.cpp
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@ -196,6 +196,11 @@ KResult StorageDevice::ioctl(OpenFileDescription&, unsigned request, Userspace<v
return copy_to_user(Userspace<size_t*>(arg), &disk_size);
break;
}
case STORAGE_DEVICE_GET_BLOCK_SIZE: {
size_t size = block_size();
return copy_to_user(Userspace<size_t*>(arg), &size);
break;
}
default:
return EINVAL;
}

2
Userland/Libraries/LibC/sys/ioctl_numbers.h
View file

@ -90,6 +90,7 @@ enum IOCtlNumber {
SOUNDCARD_IOCTL_SET_SAMPLE_RATE,
SOUNDCARD_IOCTL_GET_SAMPLE_RATE,
STORAGE_DEVICE_GET_SIZE,
STORAGE_DEVICE_GET_BLOCK_SIZE,
};
#define TIOCGPGRP TIOCGPGRP
@ -134,3 +135,4 @@ enum IOCtlNumber {
#define SOUNDCARD_IOCTL_SET_SAMPLE_RATE SOUNDCARD_IOCTL_SET_SAMPLE_RATE
#define SOUNDCARD_IOCTL_GET_SAMPLE_RATE SOUNDCARD_IOCTL_GET_SAMPLE_RATE
#define STORAGE_DEVICE_GET_SIZE STORAGE_DEVICE_GET_SIZE
#define STORAGE_DEVICE_GET_BLOCK_SIZE STORAGE_DEVICE_GET_BLOCK_SIZE