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| author | Thomas Weißschuh <linux@weissschuh.net> | 2022-11-03 16:24:07 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-10 19:07:31 +0100 |
| commit | d3d76fbde1c456a6d19991baa99ea8c2d6e6696f (patch) | |
| tree | 1d8439184733609465b51d19a761613b91f2fe84 /Documentation | |
| parent | resource: Convert DEFINE_RES_NAMED() to be compound literal (diff) | |
| download | linux-d3d76fbde1c456a6d19991baa99ea8c2d6e6696f.tar.xz linux-d3d76fbde1c456a6d19991baa99ea8c2d6e6696f.zip | |
kernel/ksysfs.c: export kernel cpu byteorder
Certain files in procfs are formatted in byteorder-dependent formats.
For example the IP addresses in /proc/net/udp.
When using emulation like qemu-user, applications are not guaranteed to
be using the same byteorder as the kernel.
Therefore the kernel needs to provide a way for applications to discover
the byteorder used in API-filesystems.
Using systemcalls is not enough because these are intercepted and
translated by the emulation.
Also this makes it easier for non-compiled applications like
shellscripts to discover the byteorder.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20221103152407.3348-1-linux@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-cpu_byteorder | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-cpu_byteorder b/Documentation/ABI/testing/sysfs-kernel-cpu_byteorder new file mode 100644 index 000000000000..f0e6ac1b5356 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-cpu_byteorder @@ -0,0 +1,12 @@ +What: /sys/kernel/cpu_byteorder +Date: February 2023 +KernelVersion: 6.2 +Contact: Thomas Weißschuh <linux@weissschuh.net> +Description: + The endianness of the running kernel. + + Access: Read + + Valid values: + "little", "big" +Users: util-linux |