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docs: filesystems: add info about efivars content
authorFlavio Suligoi <f.suligoi@asem.it>
Tue, 19 May 2020 08:41:27 +0000 (10:41 +0200)
committerJonathan Corbet <corbet@lwn.net>
Tue, 26 May 2020 00:59:59 +0000 (18:59 -0600)
commit2dcc51b3fe1708d3cda1b3fe9a30c09550791387
tree3ca0682142937227dd2b67166dfb30ee709acd9ctree | snapshot
parente2d467de34228db978683dd1a20fe3fe23018e0ccommit | diff
docs: filesystems: add info about efivars content

When an EFI variable is reading from:

/sys/firmware/efi/efivars

(for example using "hexdump"), the first 4 bytes of the
output are not the real EFI variable data, but the variable
attributes (in little-endian format).

Signed-off-by: Flavio Suligoi <f.suligoi@asem.it>
Link: https://lore.kernel.org/r/20200519084128.12756-1-f.suligoi@asem.it
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Documentation/filesystems/efivarfs.rst diff | blob | history
Domain: System / Kernel;