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Kernel: Make BochsVGADevice a BlockDevice and support mmapping it.

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Currently you can only mmap the entire framebuffer.
Using this when starting up the WindowServer gets us yet another step
closer towards it moving into userspace. :^)
This commit is contained in:
Andreas Kling
2019-02-16 09:57:42 +01:00
parent 2dc7c5a7b0
commit 799177feda
15 changed files with 155 additions and 26 deletions
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7
Kernel/Ext2FileSystem.cpp
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@@ -358,11 +358,16 @@ InodeMetadata Ext2FSInode::metadata() const
metadata.block_size = fs().block_size();
metadata.block_count = m_raw_inode.i_blocks;
if (::is_block_device(m_raw_inode.i_mode) || ::is_character_device(m_raw_inode.i_mode)) {
if (::is_character_device(m_raw_inode.i_mode)) {
unsigned dev = m_raw_inode.i_block[0];
metadata.major_device = (dev & 0xfff00) >> 8;
metadata.minor_device = (dev & 0xff) | ((dev >> 12) & 0xfff00);
}
if (::is_block_device(m_raw_inode.i_mode)) {
unsigned dev = m_raw_inode.i_block[1];
metadata.major_device = (dev & 0xfff00) >> 8;
metadata.minor_device = (dev & 0xff) | ((dev >> 12) & 0xfff00);
}
return metadata;
}