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* fs: ubifs: Add authentication supportSascha Hauer2019-04-241-2/+40
| | | | | | | | | | | | This adds UBIFS authentication support. For now, we do not do any authentication even on authenticated UBIFS images. Since this behaviour is not what the user normally expects when mounting authenticated images we only do this when the user explicitly allows it in "global.ubifs.allow_authenticated_unauthenticated". If the flag is false then we refuse mounting such an image and return -EPERM instead. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* fs: ubifs: optionally allow to mount UBIFS images with encrypted filesSascha Hauer2018-10-081-1/+1
| | | | | | | | | Currently we do not support the UBIFS file encryption feature. Nevertheless we can allow read clear files from UBIFS to be able to boot an unencrypted kernel. This differs from the Kernel behaviour, so add a globalvar to make that configurable. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ubifs: Update to v4.18-rc6Sascha Hauer2018-10-081-6/+75
| | | | | | | | | | | | This syncs the UBIFS code with Linux-4.19-rc6. There are many functions in the Linux UBIFS codebase that we do not need for a readonly implementation. These are missing here, but all removed functions are annotated as such so it should be relatively easy to copy a newer codebase over the current one and to see which functions shall be removed from the newer version. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* fs: ubifs: remove not needed codeSascha Hauer2018-10-081-473/+0
| | | | | | | | | | | | | | | | | | This patch aggressively removes stuff that we do not need in a readonly implementation: - write buffering support - lpt/ltab code - garbage collector - everything under #ifndef __BAREBOX__ This decreases the binary size by about 5k on ARM, but the main reason for doing this is the idea that things that are not there don't need to be synced with upstream ubifs code. The __BAREBOX__ ifdeffery makes the code very hard to read and is a maintenance burden by itself, so it is removed here aswell. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ubifs: update implementation from u-boot v2016.03Alexander Stein2016-04-081-43/+515
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This updated code supports recovering from unclean unmounts when write buffer size is larger than 8. Linux uses takes information into consideration when checking for writes. The following list shows the changes for each file done compared to u-boot v2016.03 code. Makefile * Add gc.o, do not include header as in u-boot budget.c: * Replace __UBOOT__ with __BAREBOX__ debug.c: * Replace __UBOOT__ with __BAREBOX__ * Remove #include <linux/compat.h> * Replace current->pid with 0 debug.h * Replace __UBOOT__ with __BAREBOX__ * Add "0 &&" to ubifs_assert condition check U-Boot essentially disabled pr_crit output and dump_stack() is defined to do { } while (0), so ubifs_assert does nothing despite condition. gc.c: * Replace __UBOOT__ with __BAREBOX__ io.c: * Replace __UBOOT__ with __BAREBOX__ * Remove #include <linux/compat.h> key.h: * No changes log.c: * No changes lprops.c: * Replace __UBOOT__ with __BAREBOX__ lpt.c * Replace __UBOOT__ with __BAREBOX__ * Remove #include <linux/compat.h> * Remove #include <ubi_uboot.h> lpt_commit.c * Replace __UBOOT__ with __BAREBOX__ * Remove #include <linux/compat.h> master.c * Replace __UBOOT__ with __BAREBOX__ * Remove #include <linux/compat.h> * Remove #include <ubi_uboot.h> misc.h * Replace __UBOOT__ with __BAREBOX__ * Add #ifndef __BAREBOX__ around unneeded ubifs_current_time orphan.c * No changes recovery.c * Replace __UBOOT__ with __BAREBOX__ replay.c * Replace __UBOOT__ with __BAREBOX__ * Remove #include <linux/compat.h> sb.c * Replace __UBOOT__ with __BAREBOX__ * Remove #include <linux/compat.h> * Remove #include <ubi_uboot.h> * rp_uid and rp_gid are still uid_t, not kuid_t, so remove .val scan.c * Replace __UBOOT__ with __BAREBOX__ super.c: * Replaced current->pid with 0 * Replaced __UBOOT__ with __BAREBOX__ * Removed #include <ubi_uboot.h> * Removed #include <memalign.h> * Added #include <init.h> * Replaced malloc_cache_aligned with kzalloc * Replaced I_LOCK with I_SYNC * i_uid and i_gid are still uid_t, not kuid_t, so remove .val * Replaced string "U-Boot" with "Barebox" * Add #ifndef __BAREBOX__ around open_ubi, sb_test, sb_set, ubifs_mount, kill_ubifs_super, ubifs_fs_type * Do not call ubi_open_volume or ubi_close_volume in ubifs_fill_super Those will already be handled in ubifs_probe * Replaced uboot_ubifs_mount with new ubifs_get_super implementation using existing functions alloc_super, alloc_ubifs_info tnc.c * Replace __UBOOT__ with __BAREBOX__ * Remove #include <linux/compat.h> tnc_misc.c * Replace __UBOOT__ with __BAREBOX__ ubifs-media.h * Replace __UBOOT__ with __BAREBOX__ ubifs.c: * Replaced __UBOOT__ with __BAREBOX__ * Adjusted header includes * Removed DECLARE_GLOBAL_DATA_PTR * Add static struct z_stream_s variable * Add struct ubifs_priv delcaration * Replaced zunzip with deflate_decompress call * Add ifdef for disabling ZLIB and/or LZO support * Replaced malloc_cache_aligned with kzalloc * Added #ifndef __BAREBOX__ around filldir, ubifs_printdir, ubifs_set_blk_dev, ubifs_ls, ubifs_exists, ubifs_size, do_readpage, ubifs_read, ubifs_close, ubifs_load * Make parameter filename const char* in ubifs_findfile * Add UBIFS fs_driver_d implementation * Add zlib_decomp_init, ubifs_init ubifs.h: * Replaced __UBOOT__ with __BAREBOX__ * Adjusted header includes * Added old #define crc32 * Added helper around kmem* * Added XATTR_LIST_MAX define * Added #ifndef __BAREBOX__ around current_fs_time struct inode, struct super_block, file_system_type, dentry and friends which barebox already has * Added #ifndef __BAREBOX__ around write_inode in super_operations to avoid declaration of writeback_control * Change rp_uid and rp_gid to uid_t and gui_t * Added struct device_d to struct ubifs_info * Added forward declaration of ubifs_get_super linux/fs.h: * Make struct inode's i_nlink a union containing a non-const int __i_nlink while making i_nlink a const int linux/fs.h: * Add s_remove_count linux/fs.h: * Convert struct super_block.s_instances and struct file_system_type.fs_supers to hlist_head Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* fs: Add ubifs supportSascha Hauer2013-08-071-0/+346
This adds ubifs support from u-boot-2013.07. This is taken mostly as-is, only the necessary adjustments to attach to the barebox fs layer have been made. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>