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Make stat() work on device files again.

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FileDescriptor will now keep a pointer to the original inode even after
opening it resolves to a character device.

Fixed up /bin/ls to display major and minor device numbers instead of size
for device files.
This commit is contained in:
Andreas Kling 2019-01-31 05:05:57 +01:00
parent c3cc318028
commit c4fce9b3f9
8 changed files with 25 additions and 10 deletions
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9
Kernel/FileDescriptor.cpp
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@ -59,10 +59,11 @@ RetainPtr<FileDescriptor> FileDescriptor::clone()
? FileDescriptor::create_pipe_reader(*m_fifo)
: FileDescriptor::create_pipe_writer(*m_fifo);
} else {
if (m_inode)
descriptor = FileDescriptor::create(m_inode.copyRef());
else {
if (m_device) {
descriptor = FileDescriptor::create(m_device.copyRef());
descriptor->m_inode = m_inode.copyRef();
} else {
descriptor = FileDescriptor::create(m_inode.copyRef());
}
}
if (!descriptor)
@ -90,7 +91,7 @@ int FileDescriptor::fstat(stat* buffer)
if (!metadata.isValid())
return -EIO;
buffer->st_dev = 0; // FIXME
buffer->st_dev = encodedDevice(metadata.majorDevice, metadata.minorDevice);
buffer->st_ino = metadata.inode.index();
buffer->st_mode = metadata.mode;
buffer->st_nlink = metadata.linkCount;