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| author | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2023-09-10 06:54:45 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-09-23 11:14:32 +0200 |
| commit | 63565e1cbfb59da059dd322054840eb6a0019e65 (patch) | |
| tree | 8e6f60dba356fd50957ccb55c656a7fb29b8b32f /include/linux/instruction_pointer.h | |
| parent | 99fcd427178d0f58f5520f8f01df727f8eaeb2c7 (diff) | |
efivarfs: fix statfs() on efivarfs
[ Upstream commit 79b83606abc778aa3cbee535b362ce905d0b9448 ]
Some firmware (notably U-Boot) provides GetVariable() and
GetNextVariableName() but not QueryVariableInfo().
With commit d86ff3333cb1 ("efivarfs: expose used and total size") the
statfs syscall was broken for such firmware.
If QueryVariableInfo() does not exist or returns EFI_UNSUPPORTED, just
report the file system size as 0 as statfs_simple() previously did.
Fixes: d86ff3333cb1 ("efivarfs: expose used and total size")
Link: https://lore.kernel.org/all/20230910045445.41632-1-heinrich.schuchardt@canonical.com/
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
[ardb: log warning on QueryVariableInfo() failure]
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux/instruction_pointer.h')
0 files changed, 0 insertions, 0 deletions