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Kernel/SysFS: Fix parent directory hierarchy with symbolic links

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We should actually start counting from the parent directory and not from
the symbolic link as it will represent a wrong count of hops from the
actual mountpoint.

The symlinks in /sys/dev/block and /sys/dev/char worked only by luck,
because I have set it to the wrong parent directory which is the
/sys/dev directory, so with the symlink it was 3 hops to /sys, together
with the root directory, therefore, everything seemed to work.

Now that the device symlinks in /sys/dev/block and /sys/dev/char are set
to the right parent directory and we start measure hops from root
directory with the parent directory of a symlink, everything seem to
work correctly now.
This commit is contained in:
Liav A
2022-07-16 18:15:37 +03:00
committed by Linus Groh
parent 7e6e7d67a9
commit 60f7d61ad2
5 changed files with 30 additions and 8 deletions
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2
Kernel/Graphics/DisplayConnector.cpp
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@@ -76,7 +76,7 @@ void DisplayConnector::after_inserting()
m_sysfs_device_directory = sysfs_display_connector_device_directory;
SysFSDisplayConnectorsDirectory::the().plug({}, *sysfs_display_connector_device_directory);
VERIFY(!m_symlink_sysfs_component);
auto sys_fs_component = MUST(SysFSSymbolicLinkDeviceComponent::try_create(SysFSDeviceIdentifiersDirectory::the(), *this, *m_sysfs_device_directory));
auto sys_fs_component = MUST(SysFSSymbolicLinkDeviceComponent::try_create(SysFSCharacterDevicesDirectory::the(), *this, *m_sysfs_device_directory));
m_symlink_sysfs_component = sys_fs_component;
after_inserting_add_symlink_to_device_identifier_directory();