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2018-08-15ubi: expose the volume CRC check skip flagQuentin Schulz
Now that we have the logic for skipping CRC check for static UBI volumes in the core, let's expose it to users. This makes use of a padding byte in the volume description data structure as a flag. This flag only tell for now whether we should skip the CRC check of a volume. This checks the UBI volume for which we are trying to skip the CRC check is static. Let's also make sure that the flags passed to verify_mkvol_req are valid. We voluntarily do not take into account the skip_check flag in vol_cdev_write() as we want to make sure what we wrote was correctly written. Suggested-by: Boris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2017-11-02License cleanup: add SPDX license identifier to uapi header files with a licenseGreg Kroah-Hartman
Many user space API headers have licensing information, which is either incomplete, badly formatted or just a shorthand for referring to the license under which the file is supposed to be. This makes it hard for compliance tools to determine the correct license. Update these files with an SPDX license identifier. The identifier was chosen based on the license information in the file. GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license identifier with the added 'WITH Linux-syscall-note' exception, which is the officially assigned exception identifier for the kernel syscall exception: NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". This exception makes it possible to include GPL headers into non GPL code, without confusing license compliance tools. Headers which have either explicit dual licensing or are just licensed under a non GPL license are updated with the corresponding SPDX identifier and the GPLv2 with syscall exception identifier. The format is: ((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE) SPDX license identifiers are a legally binding shorthand, which can be used instead of the full boiler plate text. The update does not remove existing license information as this has to be done on a case by case basis and the copyright holders might have to be consulted. This will happen in a separate step. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. See the previous patch in this series for the methodology of how this patch was researched. 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>
2017-11-02License cleanup: add SPDX license identifier to uapi header files with no ↵Greg Kroah-Hartman
license Many user space API headers are missing licensing information, which makes it hard for compliance tools to determine the correct license. By default are files without license information under the default license of the kernel, which is GPLV2. Marking them GPLV2 would exclude them from being included in non GPLV2 code, which is obviously not intended. The user space API headers fall under the syscall exception which is in the kernels COPYING file: NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". otherwise syscall usage would not be possible. Update the files which contain no license information with an SPDX license identifier. The chosen identifier is 'GPL-2.0 WITH Linux-syscall-note' which is the officially assigned identifier for the Linux syscall exception. SPDX license identifiers are 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. See the previous patch in this series for the methodology of how this patch was researched. 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>
2017-05-11uapi: export all headers under uapi directoriesNicolas Dichtel
Regularly, when a new header is created in include/uapi/, the developer forgets to add it in the corresponding Kbuild file. This error is usually detected after the release is out. In fact, all headers under uapi directories should be exported, thus it's useless to have an exhaustive list. After this patch, the following files, which were not exported, are now exported (with make headers_install_all): asm-arc/kvm_para.h asm-arc/ucontext.h asm-blackfin/shmparam.h asm-blackfin/ucontext.h asm-c6x/shmparam.h asm-c6x/ucontext.h asm-cris/kvm_para.h asm-h8300/shmparam.h asm-h8300/ucontext.h asm-hexagon/shmparam.h asm-m32r/kvm_para.h asm-m68k/kvm_para.h asm-m68k/shmparam.h asm-metag/kvm_para.h asm-metag/shmparam.h asm-metag/ucontext.h asm-mips/hwcap.h asm-mips/reg.h asm-mips/ucontext.h asm-nios2/kvm_para.h asm-nios2/ucontext.h asm-openrisc/shmparam.h asm-parisc/kvm_para.h asm-powerpc/perf_regs.h asm-sh/kvm_para.h asm-sh/ucontext.h asm-tile/shmparam.h asm-unicore32/shmparam.h asm-unicore32/ucontext.h asm-x86/hwcap2.h asm-xtensa/kvm_para.h drm/armada_drm.h drm/etnaviv_drm.h drm/vgem_drm.h linux/aspeed-lpc-ctrl.h linux/auto_dev-ioctl.h linux/bcache.h linux/btrfs_tree.h linux/can/vxcan.h linux/cifs/cifs_mount.h linux/coresight-stm.h linux/cryptouser.h linux/fsmap.h linux/genwqe/genwqe_card.h linux/hash_info.h linux/kcm.h linux/kcov.h linux/kfd_ioctl.h linux/lightnvm.h linux/module.h linux/nbd-netlink.h linux/nilfs2_api.h linux/nilfs2_ondisk.h linux/nsfs.h linux/pr.h linux/qrtr.h linux/rpmsg.h linux/sched/types.h linux/sed-opal.h linux/smc.h linux/smc_diag.h linux/stm.h linux/switchtec_ioctl.h linux/vfio_ccw.h linux/wil6210_uapi.h rdma/bnxt_re-abi.h Note that I have removed from this list the files which are generated in every exported directories (like .install or .install.cmd). Thanks to Julien Floret <julien.floret@6wind.com> for the tip to get all subdirs with a pure makefile command. For the record, note that exported files for asm directories are a mix of files listed by: - include/uapi/asm-generic/Kbuild.asm; - arch/<arch>/include/uapi/asm/Kbuild; - arch/<arch>/include/asm/Kbuild. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Acked-by: Mark Salter <msalter@redhat.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-05-05mtd: kill the nand_ecclayout structBoris Brezillon
Now that all MTD drivers have moved to the mtd_ooblayout_ops model we can safely remove the struct nand_ecclayout definition, and all the remaining places where it was still used. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2015-10-19mtd: mtd-user: remove stdint.h includeMikko Rapeli
Kernel headers should use linux/types.h instead. Signed-off-by: Mikko Rapeli <mikko.rapeli@iki.fi> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-05-20mtd: lpddr: add driver for LPDDR2-NVM PCM memoriesVincenzo Aliberti
Signed-off-by: Vincenzo Aliberti <vincenzo.aliberti@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-03-06UBI: make UBI_IOCVOLCRBLK take a parameter for future usageEzequiel Garcia
In order to allow a future ioctl parameter, such as a creation flag, we change the UBI_IOCVOLCRBLK so it accepts a struct ubi_blkcreate_req. For the time being the structure is not in use, but fully reserved. This ABI change is still possible and harmless, because the ioctl has just been introduced and there's no userspace program which uses it. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2014-03-05UBI: rename block device ioctlsArtem Bityutskiy
Rename the UBI_IOCVOLATTBLK and UBI_IOCVOLDETBLK to UBI_IOCVOLCRBLK and UBI_IOCVOLRMBLK, because we do not use terms "attach" and "detach" for the R/O block devices on top of UBI volumes. Instead, we use terms "create" and "remove". This patch also amends the related commentaries. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
2014-02-28UBI: R/O block driver on top of UBI volumesEzequiel Garcia
This commit introduces read-only block device emulation on top of UBI volumes. Given UBI takes care of wear leveling and bad block management it's possible to add a thin layer to enable block device access to UBI volumes. This allows to use a block-oriented filesystem on a flash device. The UBI block devices are meant to be used in conjunction with any regular, block-oriented file system (e.g. ext4), although it's primarily targeted at read-only file systems, such as squashfs. Block devices are created upon user request through new ioctls: UBI_IOCVOLATTBLK to attach and UBI_IOCVOLDETBLK to detach. Also, a new UBI module parameter is added 'ubi.block'. This parameter is needed in order to attach a block device on boot-up time, allowing to mount the rootfs on a ubiblock device. For instance, you could have these kernel parameters: ubi.mtd=5 ubi.block=0,0 root=/dev/ubiblock0_0 Or, if you compile ubi as a module: $ modprobe ubi mtd=/dev/mtd5 block=/dev/ubi0_0 Artem: amend commentaries and massage the patch a little bit. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-10-27mtd: mtd-abi: add a helper to detect the nand typeHuang Shijie
The helper is for user applications, and it is just a copy of the kernel helper: mtd_type_is_nand(); Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2013-10-27mtd: nand: add more comment for MTD_NANDFLASH/MTD_MLCNANDFLASHHuang Shijie
In current code, the MTD_NANDFLASH is used to represent both the SLC and MLC. It is confusing to us. By adding an explicit comment about these two macros, this patch makes it clear that: MTD_NANDFLASH : stands for SLC NAND, MTD_MLCNANDFLASH : stands for MLC NAND (including TLC). Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2013-05-29UBI: document UBI_IOCVOLUP better in user headerMike Frysinger
The current ioctl define implies that this func expects to be passed a 64bit number directly rather than a pointer to a 64bit. The code that processes this ioctl shows that it clearly expects a pointer. It'd be best if we could change the type to "__s64*", but that would change the generated ioctl number thus breaking the userland ABI. So just add a comment for intrepid developers. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-10-09UAPI: (Scripted) Disintegrate include/mtdDavid Howells
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-10-02UAPI: (Scripted) Set up UAPI Kbuild filesDavid Howells
Set up empty UAPI Kbuild files to be populated by the header splitter. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>