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linux/block/partitions/Kconfig
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00

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# SPDX-License-Identifier: GPL-2.0
#
# Partition configuration
#
config PARTITION_ADVANCED
bool "Advanced partition selection"
help
Say Y here if you would like to use hard disks under Linux which
were partitioned under an operating system running on a different
architecture than your Linux system.
Note that the answer to this question won't directly affect the
kernel: saying N will just cause the configurator to skip all
the questions about foreign partitioning schemes.
If unsure, say N.
config ACORN_PARTITION
bool "Acorn partition support" if PARTITION_ADVANCED
default y if ARCH_ACORN
help
Support hard disks partitioned under Acorn operating systems.
config ACORN_PARTITION_CUMANA
bool "Cumana partition support" if PARTITION_ADVANCED
default y if ARCH_ACORN
depends on ACORN_PARTITION
help
Say Y here if you would like to use hard disks under Linux which
were partitioned using the Cumana interface on Acorn machines.
config ACORN_PARTITION_EESOX
bool "EESOX partition support" if PARTITION_ADVANCED
default y if ARCH_ACORN
depends on ACORN_PARTITION
config ACORN_PARTITION_ICS
bool "ICS partition support" if PARTITION_ADVANCED
default y if ARCH_ACORN
depends on ACORN_PARTITION
help
Say Y here if you would like to use hard disks under Linux which
were partitioned using the ICS interface on Acorn machines.
config ACORN_PARTITION_ADFS
bool "Native filecore partition support" if PARTITION_ADVANCED
default y if ARCH_ACORN
depends on ACORN_PARTITION
help
The Acorn Disc Filing System is the standard file system of the
RiscOS operating system which runs on Acorn's ARM-based Risc PC
systems and the Acorn Archimedes range of machines. If you say
`Y' here, Linux will support disk partitions created under ADFS.
config ACORN_PARTITION_POWERTEC
bool "PowerTec partition support" if PARTITION_ADVANCED
default y if ARCH_ACORN
depends on ACORN_PARTITION
help
Support reading partition tables created on Acorn machines using
the PowerTec SCSI drive.
config ACORN_PARTITION_RISCIX
bool "RISCiX partition support" if PARTITION_ADVANCED
default y if ARCH_ACORN
depends on ACORN_PARTITION
help
Once upon a time, there was a native Unix port for the Acorn series
of machines called RISCiX. If you say 'Y' here, Linux will be able
to read disks partitioned under RISCiX.
config AIX_PARTITION
bool "AIX basic partition table support" if PARTITION_ADVANCED
help
Say Y here if you would like to be able to read the hard disk
partition table format used by IBM or Motorola PowerPC machines
running AIX. AIX actually uses a Logical Volume Manager, where
"logical volumes" can be spread across one or multiple disks,
but this driver works only for the simple case of partitions which
are contiguous.
Otherwise, say N.
config OSF_PARTITION
bool "Alpha OSF partition support" if PARTITION_ADVANCED
default y if ALPHA
help
Say Y here if you would like to use hard disks under Linux which
were partitioned on an Alpha machine.
config AMIGA_PARTITION
bool "Amiga partition table support" if PARTITION_ADVANCED
default y if (AMIGA || AFFS_FS=y)
help
Say Y here if you would like to use hard disks under Linux which
were partitioned under AmigaOS.
config ATARI_PARTITION
bool "Atari partition table support" if PARTITION_ADVANCED
default y if ATARI
help
Say Y here if you would like to use hard disks under Linux which
were partitioned under the Atari OS.
config IBM_PARTITION
bool "IBM disk label and partition support"
depends on PARTITION_ADVANCED && S390
help
Say Y here if you would like to be able to read the hard disk
partition table format used by IBM DASD disks operating under CMS.
Otherwise, say N.
config MAC_PARTITION
bool "Macintosh partition map support" if PARTITION_ADVANCED
default y if (MAC || PPC_PMAC)
help
Say Y here if you would like to use hard disks under Linux which
were partitioned on a Macintosh.
config MSDOS_PARTITION
bool "PC BIOS (MSDOS partition tables) support" if PARTITION_ADVANCED
default y
help
Say Y here.
config BSD_DISKLABEL
bool "BSD disklabel (FreeBSD partition tables) support"
depends on PARTITION_ADVANCED && MSDOS_PARTITION
help
FreeBSD uses its own hard disk partition scheme on your PC. It
requires only one entry in the primary partition table of your disk
and manages it similarly to DOS extended partitions, putting in its
first sector a new partition table in BSD disklabel format. Saying Y
here allows you to read these disklabels and further mount FreeBSD
partitions from within Linux if you have also said Y to "UFS
file system support", above. If you don't know what all this is
about, say N.
config MINIX_SUBPARTITION
bool "Minix subpartition support"
depends on PARTITION_ADVANCED && MSDOS_PARTITION
help
Minix 2.0.0/2.0.2 subpartition table support for Linux.
Say Y here if you want to mount and use Minix 2.0.0/2.0.2
subpartitions.
config SOLARIS_X86_PARTITION
bool "Solaris (x86) partition table support"
depends on PARTITION_ADVANCED && MSDOS_PARTITION
help
Like most systems, Solaris x86 uses its own hard disk partition
table format, incompatible with all others. Saying Y here allows you
to read these partition tables and further mount Solaris x86
partitions from within Linux if you have also said Y to "UFS
file system support", above.
config UNIXWARE_DISKLABEL
bool "Unixware slices support"
depends on PARTITION_ADVANCED && MSDOS_PARTITION
---help---
Like some systems, UnixWare uses its own slice table inside a
partition (VTOC - Virtual Table of Contents). Its format is
incompatible with all other OSes. Saying Y here allows you to read
VTOC and further mount UnixWare partitions read-only from within
Linux if you have also said Y to "UFS file system support" or
"System V and Coherent file system support", above.
This is mainly used to carry data from a UnixWare box to your
Linux box via a removable medium like magneto-optical, ZIP or
removable IDE drives. Note, however, that a good portable way to
transport files and directories between unixes (and even other
operating systems) is given by the tar program ("man tar" or
preferably "info tar").
If you don't know what all this is about, say N.
config LDM_PARTITION
bool "Windows Logical Disk Manager (Dynamic Disk) support"
depends on PARTITION_ADVANCED
---help---
Say Y here if you would like to use hard disks under Linux which
were partitioned using Windows 2000's/XP's or Vista's Logical Disk
Manager. They are also known as "Dynamic Disks".
Note this driver only supports Dynamic Disks with a protective MBR
label, i.e. DOS partition table. It does not support GPT labelled
Dynamic Disks yet as can be created with Vista.
Windows 2000 introduced the concept of Dynamic Disks to get around
the limitations of the PC's partitioning scheme. The Logical Disk
Manager allows the user to repartition a disk and create spanned,
mirrored, striped or RAID volumes, all without the need for
rebooting.
Normal partitions are now called Basic Disks under Windows 2000, XP,
and Vista.
For a fuller description read <file:Documentation/ldm.txt>.
If unsure, say N.
config LDM_DEBUG
bool "Windows LDM extra logging"
depends on LDM_PARTITION
help
Say Y here if you would like LDM to log verbosely. This could be
helpful if the driver doesn't work as expected and you'd like to
report a bug.
If unsure, say N.
config SGI_PARTITION
bool "SGI partition support" if PARTITION_ADVANCED
default y if DEFAULT_SGI_PARTITION
help
Say Y here if you would like to be able to read the hard disk
partition table format used by SGI machines.
config ULTRIX_PARTITION
bool "Ultrix partition table support" if PARTITION_ADVANCED
default y if MACH_DECSTATION
help
Say Y here if you would like to be able to read the hard disk
partition table format used by DEC (now Compaq) Ultrix machines.
Otherwise, say N.
config SUN_PARTITION
bool "Sun partition tables support" if PARTITION_ADVANCED
default y if (SPARC || SUN3 || SUN3X)
---help---
Like most systems, SunOS uses its own hard disk partition table
format, incompatible with all others. Saying Y here allows you to
read these partition tables and further mount SunOS partitions from
within Linux if you have also said Y to "UFS file system support",
above. This is mainly used to carry data from a SPARC under SunOS to
your Linux box via a removable medium like magneto-optical or ZIP
drives; note however that a good portable way to transport files and
directories between unixes (and even other operating systems) is
given by the tar program ("man tar" or preferably "info tar"). If
you don't know what all this is about, say N.
config KARMA_PARTITION
bool "Karma Partition support"
depends on PARTITION_ADVANCED
help
Say Y here if you would like to mount the Rio Karma MP3 player, as it
uses a proprietary partition table.
config EFI_PARTITION
bool "EFI GUID Partition support" if PARTITION_ADVANCED
default y
select CRC32
help
Say Y here if you would like to use hard disks under Linux which
were partitioned using EFI GPT.
config SYSV68_PARTITION
bool "SYSV68 partition table support" if PARTITION_ADVANCED
default y if VME
help
Say Y here if you would like to be able to read the hard disk
partition table format used by Motorola Delta machines (using
sysv68).
Otherwise, say N.
config CMDLINE_PARTITION
bool "Command line partition support" if PARTITION_ADVANCED
select BLK_CMDLINE_PARSER
help
Say Y here if you want to read the partition table from bootargs.
The format for the command line is just like mtdparts.
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