linux/drivers/firmware
Matt Fleming e246eb568b efi: Add pstore variables to the deletion whitelist
Laszlo explains why this is a good idea,

 'This is because the pstore filesystem can be backed by UEFI variables,
  and (for example) a crash might dump the last kilobytes of the dmesg
  into a number of pstore entries, each entry backed by a separate UEFI
  variable in the above GUID namespace, and with a variable name
  according to the above pattern.

  Please see "drivers/firmware/efi/efi-pstore.c".

  While this patch series will not prevent the user from deleting those
  UEFI variables via the pstore filesystem (i.e., deleting a pstore fs
  entry will continue to delete the backing UEFI variable), I think it
  would be nice to preserve the possibility for the sysadmin to delete
  Linux-created UEFI variables that carry portions of the crash log,
  *without* having to mount the pstore filesystem.'

There's also no chance of causing machines to become bricked by
deleting these variables, which is the whole purpose of excluding
things from the whitelist.

Use the LINUX_EFI_CRASH_GUID guid and a wildcard '*' for the match so
that we don't have to update the string in the future if new variable
name formats are created for crash dump variables.

Reported-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Peter Jones <pjones@redhat.com>
Tested-by: Peter Jones <pjones@redhat.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: "Lee, Chun-Yi" <jlee@suse.com>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
2016-02-16 12:48:18 +00:00
..
broadcom drivers/firmware/broadcom/bcm47xx_nvram.c: use __ioread32_copy() instead of open-coding 2016-01-20 17:09:18 -08:00
efi efi: Add pstore variables to the deletion whitelist 2016-02-16 12:48:18 +00:00
google firmware: google memconsole driver fixes 2014-02-15 11:30:28 -08:00
arm_scpi.c firmware: arm_scpi: Extend to support sensors 2015-10-09 11:05:52 +01:00
dcdbas.c firmware: drop owner assignment from platform_drivers 2014-10-20 16:20:31 +02:00
dcdbas.h
dell_rbu.c
dmi_scan.c firmware: dmi_scan: Save SMBIOS Type 9 System Slots 2016-01-15 22:08:45 +01:00
dmi-id.c
dmi-sysfs.c firmware: dmi_scan: add SBMIOS entry and DMI tables 2015-06-25 09:06:56 +02:00
edd.c [SCSI] edd: Treat "XPRS" host bus type the same as "PCI" 2011-10-31 13:26:19 +04:00
iscsi_ibft_find.c efi: Make 'efi_enabled' a function to query EFI facilities 2013-01-30 11:51:59 -08:00
iscsi_ibft.c iscsi_ibft: filter null v4-mapped v6 addresses 2015-06-05 21:07:02 -04:00
Kconfig ARM: 8478/2: arm/arm64: add arm-smccc 2016-01-04 16:19:57 +00:00
Makefile Merge tag 'arm/soc/for-4.4/rpi-drivers' of https://github.com/Broadcom/stblinux into next/drivers 2015-10-26 10:39:22 +09:00
memmap.c drivers/firmware/memmap.c: fix kernel-doc format 2015-06-25 17:00:41 -07:00
pcdp.c serial: 8250_early: Remove setup_early_serial8250_console() 2015-03-26 17:25:27 +01:00
pcdp.h
psci.c ARM: 8481/2: drivers: psci: replace psci firmware calls 2016-01-04 16:24:45 +00:00
qcom_scm-32.c qcom-scm: fix endianess issue in __qcom_scm_is_call_available 2015-10-14 14:51:21 -05:00
qcom_scm-64.c firmware: qcom: scm: Add function stubs for ARM64 2015-09-23 12:00:43 -05:00
qcom_scm.c firmware: qcom: scm: Add HDCP Support 2015-05-28 10:47:45 -05:00
qcom_scm.h firmware: qcom: scm: Add HDCP Support 2015-05-28 10:47:45 -05:00
raspberrypi.c ARM: bcm2835: Add the Raspberry Pi firmware driver 2015-10-14 15:30:06 -07:00