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2018-07-25fs: fat: cannot write to subdirectoriesHeinrich Schuchardt
fs_fat_write() is not able to write to subdirectories. Currently if a filepath with a leading slash is passed, the slash is treated as part of the filename to be created in the root directory. Strip leading (back-)slashes. Check that the remaining filename does not contain any illegal characters (<>:"/\|?*). This way we will throw an error when trying to write to a subdirectory. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-07-20fs: btrfs: Fix wrong comparison in logical to physical mappingMarek Behún
The comparison logical > item->logical + item->length in btrfs_map_logical_to_physical is wrong and should be instead logical >= item->logical + item->length For example, if item->logical = 4096 item->length = 4096 and we are looking for logical = 8192, it is not part of item (item is [4096, 8191]). But the comparison is false and we think we have found the correct item, although we should be searing in the right subtree. This fixes some bugs I encountered. Signed-off-by: Marek Behun <marek.behun@nic.cz>
2018-07-12ubifs: remove useless codeChristophe Kerello
By checking ubifs source code, s_instances parameter is not used anymore. So, set this parameter and the associated source code under __UBOOT__ compilation. Signed-off-by: Christophe Kerello <christophe.kerello@st.com> Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2018-06-18fs: btrfs: Do not fail when all root_backups are emptyYevgeny Popovych
This is the case when reading freshly created filesystem. The error message is like the following: btrfs_read_superblock: No valid root_backup found! Since the data from super_roots/root_backups is not actually used - decided to rework btrfs_newest_root_backup() into btrfs_check_super_roots() that will only check if super_roots array is valid and correctly handle empty scenario. As a result: * btrfs_read_superblock() now only checks if super_roots array is valid; the case when it is empty is considered OK. * removed root_backup pointer from btrfs_info, which would be NULL in case of empty super_roots. * btrfs_read_superblock() verifies number of devices from the superblock itself, not newest root_backup. Signed-off-by: Yevgeny Popovych <yevgenyp@pointgrab.com> Cc: Marek Behun <marek.behun@nic.cz> Cc: Sergey Struzh <sergeys@pointgrab.com>
2018-06-13lib: Add hexdumpAlexey Brodkin
Often during debugging session it's very interesting to see what data we were dealing with. For example what we write or read to/from memory or peripherals. This change introduces functions that allow to dump binary data with one simple function invocation like: ------------------->8---------------- print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); ------------------->8---------------- which gives us the following: ------------------->8---------------- 00000000: f2 b7 c9 88 62 61 75 64 72 61 74 65 3d 31 31 35 ....baudrate=115 00000010: 32 30 30 00 62 6f 6f 74 61 72 67 73 3d 63 6f 6e 200.bootargs=con 00000020: 73 6f 6c 65 3d 74 74 79 53 33 2c 31 31 35 32 30 sole=ttyS3,11520 00000030: 30 6e 38 00 62 6f 6f 74 64 65 6c 61 79 3d 33 00 0n8.bootdelay=3. 00000040: 62 6f 6f 74 66 69 6c 65 3d 75 49 6d 61 67 65 00 bootfile=uImage. 00000050: 66 64 74 63 6f 6e 74 72 6f 6c 61 64 64 72 3d 39 fdtcontroladdr=9 00000060: 66 66 62 31 62 61 30 00 6c 6f 61 64 61 64 64 72 ffb1ba0.loadaddr 00000070: 3d 30 78 38 32 30 30 30 30 30 30 00 73 74 64 65 =0x82000000.stde 00000080: 72 72 3d 73 65 72 69 61 6c 30 40 65 30 30 32 32 rr=serial0@e0022 00000090: 30 30 30 00 73 74 64 69 6e 3d 73 65 72 69 61 6c 000.stdin=serial 000000a0: 30 40 65 30 30 32 32 30 30 30 00 73 74 64 6f 75 0@e0022000.stdou 000000b0: 74 3d 73 65 72 69 61 6c 30 40 65 30 30 32 32 30 t=serial0@e00220 000000c0: 30 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00.............. ... ------------------->8---------------- Source of hexdump.c was copied from Linux kernel v4.7-rc2. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Anatolij Gustschin <agust@denx.de> Cc: Mario Six <mario.six@gdsys.cc> Cc: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@konsulko.com> Cc: Stefan Roese <sr@denx.de>
2018-06-13fs: btrfs: Fix not all CHUNK_ITEMs being read from CHUNK_TREEYevgeny Popovych
This causes errors when translating logical addresses to physical: btrfs_map_logical_to_physical: Cannot map logical address <addr> to physical btrfs_file_read: Error reading extent The behavior of btrfs_map_logical_to_physical() is to stop traversing CHUNK_TREE when it encounters first non-CHUNK_ITEM, which makes only some portion of CHUNK_ITEMs being read. Change it to skip over non-chunk items. Signed-off-by: Yevgeny Popovych <yevgenyp@pointgrab.com> Cc: Marek Behun <marek.behun@nic.cz> Cc: Sergey Struzh <sergeys@pointgrab.com> Reviewed-by: Marek Behun <marek.behun@nic.cz>
2018-05-30fs: Add fs_get_type_name to return current filesystem nameAlex Kiernan
Add fs_get_type_name so we can get the current filesystem type. Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
2018-05-23fs: ext4: fix crash on ext4lsEugen Hristev
Found a crash while issuing ext4ls with a non-existent directory. Crash test: => ext4ls mmc 0 1 ** Can not find directory. ** data abort pc : [<3fd7c2ec>] lr : [<3fd93ed8>] reloc pc : [<26f142ec>] lr : [<26f2bed8>] sp : 3f963338 ip : 3fdc3dc4 fp : 3fd6b370 r10: 00000004 r9 : 3f967ec0 r8 : 3f96db68 r7 : 3fdc99b4 r6 : 00000000 r5 : 3f96dc88 r4 : 3fdcbc8c r3 : fffffffa r2 : 00000000 r1 : 3f96e0bc r0 : 00000002 Flags: nZCv IRQs off FIQs off Mode SVC_32 Resetting CPU ... resetting ... Tested on SAMA5D2_Xplained board (sama5d2_xplained_mmc_defconfig) Looks like crash is introduced by commit: "fa9ca8a" fs/ext4/ext4fs.c: Free dirnode in error path of ext4fs_ls Issue is that dirnode is not initialized, and then freed if the call to ext4_ls fails. ext4_ls will not change the value of dirnode in this case thus we have a crash with data abort. I added initialization and a check for dirname being NULL. Fixes: "fa9ca8a" fs/ext4/ext4fs.c: Free dirnode in error path of ext4fs_ls Cc: Stefan Brüns <stefan.bruens@rwth-aachen.de> Cc: Tom Rini <trini@konsulko.com> Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2018-05-09ubifs: avoid assert failed in ubifs.cPatrice Chotard
This patch solves assert failed displayed in the console during a boot. The root cause is that the ubifs_inode is not already allocated when ubifs_printdir and ubifs_finddir functions are called. Trace showing the issue: feed 'boot.scr.uimg', ino 94, new f_pos 0x17b40ece dent->ch.sqnum '7132', creat_sqnum 3886945402880 UBIFS assert failed in ubifs_finddir at 436 INODE ALLOCATION: creat_sqnum '7129' Found U-Boot script /boot.scr.uimg Signed-off-by: Christophe Kerello <christophe.kerello@st.com> Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-11ubifs: Change value of mutex_is_locked()Bradley Bolen
The mutex lock and unlock functions are stubbed out and mutex_is_locked was 0. This caused asserts to fail in ubifs code when checking that the mutex was locked. For example, UBIFS assert failed in ubifs_change_lp at 540 UBIFS assert failed in ubifs_release_lprops at 278 Assume that the "mutex" is locked since that is the normal case when it is checked in the ubifs code. Signed-off-by: Bradley Bolen <bradleybolen@gmail.com>
2018-04-06fs: btrfs: Remove unused debug code left from developmentMarek Behún
Signed-off-by: Marek Behun <marek.behun@nic.cz>
2018-03-31fs: cbfs: fix locating the cbfs headerAndre Heider
The value at the end of the rom is not a pointer, it is an offset relative to the end of rom. Signed-off-by: Andre Heider <a.heider@gmail.com>
2018-03-24Convert CONFIG_UBIFS_SILENCE_MSG to KconfigPetr Vorel
Introduce another difference from upstream (kernel) source in fs/ubifs/super.c: adding preprocessor condition as y variable in mount_ubifs() depends on CONFIG_UBIFS_SILENCE_MSG: fs/ubifs/super.c:1337:15: error: variable ?y? set but not used [-Werror=unused-but-set-variable] long long x, y; Not setting CONFIG_UBIFS_SILENCE_MSG in am335x_igep003x_defconfig and igep0032_defconfig. Although it was defined in their config headers, it depends on CMD_UBIFS which is not set for them. Signed-off-by: Petr Vorel <petr.vorel@gmail.com> Cc: Joe Hershberger <joe.hershberger@ni.com> Cc: Heiko Schocher <hs@denx.de>
2018-03-24ubifs: Reintroduce using CONFIG_UBIFS_SILENCE_MSGPetr Vorel
Use of CONFIG_UBIFS_SILENCE_MSG was added in 147162dac6 ("ubi: ubifs: Turn off verbose prints") Then it was removed in ff94bc40af ("mtd, ubi, ubifs: resync with Linux-3.14") Cc: Joe Hershberger <joe.hershberger@ni.com> Cc: Heiko Schocher <hs@denx.de> Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
2018-03-09fs: ext4: Do not print mount fail message when not ext4 filesystemMarek Behún
Other filesystem drivers don't do this. Signed-off-by: Marek Behun <marek.behun@nic.cz>
2018-03-09yaffs2: iterator variable cannot be NULLHeinrich Schuchardt
The iterator of list_for_each() is never NULL. Identified with coccinelle. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2018-01-29fs: btrfs: Fix printf format character warningTom Rini
When printing a size_t value we need to use %zu for portability between 32bit and 64bit targets. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Marek Behun <marek.behun@nic.cz>
2018-01-28fs: btrfs: Fix unaligned memory accessesAlberto Sánchez Molero
Loading files stored with lzo compression from a btrfs filesystem was producing unaligned memory accesses, which were causing a data abort and a reset on an Orange Pi Zero. The change in hash.c is not triggered by any error but follows the same pattern. Please confirm. Fixed according to doc/README.unaligned-memory-access.txt Signed-off-by: Alberto Sánchez Molero <alsamolero@gmail.com> Tested-by: Robert Nelson <robertcnelson@gmail.com>
2018-01-22fs: fat: Drop CONFIG_SUPPORT_VFATTuomas Tynkkynen
fat.h unconditionally defines CONFIG_SUPPORT_VFAT (and has done since 2003), so as a result VFAT support is always enabled regardless of whether a board config defines it or not. Drop this unnecessary option. Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com>
2018-01-22fs: FAT: Fix typo in FS_FAT_MAX_CLUSTSIZE descriptionTuomas Tynkkynen
Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com>
2018-01-22fs: Migrate ext4 to KconfigTuomas Tynkkynen
Migrate the following symbols to Kconfig: CONFIG_FS_EXT4 CONFIG_EXT4_WRITE The definitions in config_fallbacks.h can now be expressed in Kconfig. Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com>
2018-01-19fs/fat: remove distractive message in file_fat_read_at()Heinrich Schuchardt
The message "reading %s\n" may be interesting when debugging but otherwise it is superfluous. Only output the message when debugging. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-01-19fs: remove distractive message in fs_read()Heinrich Schuchardt
The message "** %s shorter than offset + len **\n" may be interesting when debugging but it does not indicate an error. So we should not write it if we are not in debug mode. Fixes: 7a3e70cfd88c fs/fs.c: read up to EOF when len would read past EOF Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-01-10fat write: Fixed a problem with the case of file names when writing filesJean-Jacques Hiblot
commit 21a24c3bf35b ("fs/fat: fix case for FAT shortnames") made it possible that get_name() returns file names with some upper cases. find_directory_entry() must be updated to take this account, and use case-insensitive functions to compare file names. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2017-12-04mtd: nand: Rename nand.h into rawnand.hMasahiro Yamada
This header was renamed to rawnand.h in Linux. The following is the corresponding commit in Linux. commit d4092d76a4a4e57b65910899948a83cc8646c5a5 Author: Boris Brezillon <boris.brezillon@free-electrons.com> Date: Fri Aug 4 17:29:10 2017 +0200 mtd: nand: Rename nand.h into rawnand.h We are planning to share more code between different NAND based devices (SPI NAND, OneNAND and raw NANDs), but before doing that we need to move the existing include/linux/mtd/nand.h file into include/linux/mtd/rawnand.h so we can later create a nand.h header containing all common structure and function prototypes. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-11-29fat: Use cache aligned buffers for fat_opendirNeil Armstrong
Before this patch one could receive following errors when executing "fatls" command on machine with cache enabled (ex i.MX6Q) : => fatls mmc 0:1 CACHE: Misaligned operation at range [4f59dfc8, 4f59e7c8] CACHE: Misaligned operation at range [4f59dfc8, 4f59e7c8] ERROR: v7_outer_cache_inval_range - start address is not aligned - 0x4f59dfc8 ERROR: v7_outer_cache_inval_range - stop address is not aligned - 0x4f59e7c8 CACHE: Misaligned operation at range [4f59dfc8, 4f59e7c8] CACHE: Misaligned operation at range [4f59dfc8, 4f59e7c8] ERROR: v7_outer_cache_inval_range - start address is not aligned - 0x4f59dfc8 ERROR: v7_outer_cache_inval_range - stop address is not aligned - 0x4f59e7c8 To alleviate this problem - the calloc()s have been replaced with malloc_cache_aligned() and memset(). After those changes the buffers are properly aligned (with both start address and size) to SoC cache line. Fixes: 09fa964bba80 ("fs/fat: Fix 'CACHE: Misaligned operation at range' warnings") Suggested-by: Lukasz Majewski <lukma@denx.de> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
2017-11-29fs: avoid possible NULL dereference in fs_devreadHeinrich Schuchardt
It is unwise to first dereference a variable and then to check if it was NULL. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Marek Behun <marek.behun@nic.cz> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-11-27Merge git://www.denx.de/git/u-boot-imxTom Rini
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-11-20yaffs2: rework yaffs_new_obj_idHeinrich Schuchardt
The iterator variable of list_for_each is never NULL. if (1 || A) is always true. Use break if entry found. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2017-11-20ubifs: no NULL check needed before freeHeinrich Schuchardt
kfree() calls free. free() checks if the parameter is NULL. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2017-11-20ext4: recover from filesystem corruption when readingIan Ray
Some fixes when reading EXT files and directory entries were identified after using e2fuzz to corrupt an EXT3 filesystem: - Stop reading directory entries if the offset becomes badly aligned. - Avoid overwriting memory by clamping the length used to zero the buffer in ext4fs_read_file. Also sanity check blocksize. Signed-off-by: Ian Ray <ian.ray@ge.com> Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk> Reviewed-by: Stefano Babic <sbabic@denx.de>
2017-10-23mtd: remove MTDDEBUG() and CONFIG_MTD_DEBUGMasahiro Yamada
All users of this macro have been converted. Remove MTDDEBUG and related CONFIG options. ubifs_dbg_msg_key() is kept. It is silent unless DEBUG is defined. I am not touching scripts/config_whitelist.txt. The deprecated options will be dropped by the next resync. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-16fs/jffs2/mini_inflate.c: use "static inline" instead of "inline"Vagrant Cascadian
This makes gcc no longer expect an out-of-line version of the functions being present elsewhere. This fixes a failure to build on several marvell targets with gcc-7 on Debian: https://bugs.debian.org/877963 Signed-off-by: Adrian Bunk <bunk@debian.org> Signed-off-by: Vagrant Cascadian <vagrant@debian.org>
2017-10-16jffs2: ECC corrected nand data is ignoredEngling, Uwe
Hello, I ran into a problem with the JFFS2 filesystem driver implemented in U-Boot. I've got a NAND device that has correctable ECC errors (corrected somewhere in mtd/nand/nand_base.c). The NAND driver tells the filesystem layer (jffs2_1pass.c) above that there occurred correctable ECC errors and returns with a "value > 0". The JFFS2 driver recognizes the corrected ECC errors as real error and skips this block because the only accepts a "return value == 0" as correct. This problem exists for over 8 years (I checked version 2010.09) so I'm a little bit worried that I interpreted something wrong or didn't get the whole context. Can someone confirm this bug (and the bugfix) in the u-boot jffs2 driver? There was a mail in 2012 that mentioned the same problem, but there was no patch: http://u-boot.10912.n7.nabble.com/JFFS2-seems-to-drop-nand-data-with-ECC-corrections-td142008.html Sometime after this discussion the return value of nand_read() changed from -EUCLEAN as correctable ECC error to a positive value with the count of ECC corrected errors. With kind reguards, Uwe Engling
2017-10-16fs: Set .opendir to fs_opendir_unsupported for btrfsMarek Behún
Otherwise fs_opendir will fault. Signed-off-by: Marek Behun <marek.behun@nic.cz>
2017-10-16fs: btrfs: Remove a foreign language noteMarek Behún
I accidentaly left a foreign language note in the code from development. Signed-off-by: Marek Behun <marek.behun@nic.cz>
2017-10-16fs: btrfs: Fix usage of uninitialized variablesMarek Behún
The variable res should be initialized to 0 in these functions, because if the searched key is not found, the variable is used uninitialized. Reported-by: Coverity (CID: 167335) Reported-by: Coverity (CID: 167336) Reported-by: Coverity (CID: 167337) Signed-off-by: Marek Behun <marek.behun@nic.cz>
2017-10-08fs/fat: Check malloc return values and fix memory leaksTuomas Tynkkynen
Check malloc() return values and properly unwind on errors so memory allocated for fat_itr structures get freed properly. Also fixes a leak of fsdata.fatbuf in fat_size(). Fixes: 2460098cffacd1 ("fs/fat: Reduce stack usage") Reported-by: Coverity (CID: 167225, 167233, 167234) Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-10-08fs/fat: Fix 'CACHE: Misaligned operation at range' warningsTuomas Tynkkynen
The 'block' field of fat_itr needs to be properly aligned for DMA and while it does have '__aligned(ARCH_DMA_MINALIGN)', the fat_itr structure itself needs to be properly aligned as well. While at it use malloc_cache_aligned() for the other aligned allocations in the file as well. Fixes: 2460098cffacd1 ("fs/fat: Reduce stack usage") Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-10-06fs/ext4/ext4fs.c: Free dirnode in error path of ext4fs_lsTom Rini
As reported by Coverity, we did not free dirnode in the case of failure. Do so now. Reported-by: Coverity (CID: 131221) Cc: Stefan Brüns <stefan.bruens@rwth-aachen.de> Signed-off-by: Tom Rini <trini@konsulko.com>
2017-10-06fs/fat: Fix pathnames using '..' that lead to the root directoryTuomas Tynkkynen
If we end up back in the root directory via a '..' directory entry, set itr->is_root accordingly. Failing to do that gives spews like "Invalid FAT entry" and being unable to access directory entries located past the first cluster of the root directory. Fixes: 8eafae209c35 ("fat/fs: convert to directory iterators") Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
2017-10-06fs/ext4: Fix group descriptor checksum calculationTuomas Tynkkynen
The current code doesn't compute the group descriptor checksum correctly for the filesystems that e2fsprogs 1.43.4 creates (they have 'Group descriptor size: 64' as reported by tune2fs). Extend the checksum calculation to be done as ext4_group_desc_csum() does in Linux. This fixes these errors in dmesg from running fs-test.sh and makes it succeed again: [1671902.620699] EXT4-fs (loop1): ext4_check_descriptors: Checksum for group 0 failed (35782!=10965) [1671902.620706] EXT4-fs (loop1): group descriptors corrupted! Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
2017-10-04treewide: replace with error() with pr_err()Masahiro Yamada
U-Boot widely uses error() as a bit noisier variant of printf(). This macro causes name conflict with the following line in include/linux/compiler-gcc.h: # define __compiletime_error(message) __attribute__((error(message))) This prevents us from using __compiletime_error(), and makes it difficult to fully sync BUILD_BUG macros with Linux. (Notice Linux's BUILD_BUG_ON_MSG is implemented by using compiletime_assert().) Let's convert error() into now treewide-available pr_err(). Done with the help of Coccinelle, excluing tools/ directory. The semantic patch I used is as follows: // <smpl> @@@@ -error +pr_err (...) // </smpl> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org> [trini: Re-run Coccinelle] Signed-off-by: Tom Rini <trini@konsulko.com>
2017-10-03fs/btrfs: Fix warning in btrfs_check_super()Tom Rini
We specifically say that the last arg is u32, so use %lu. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-10-02fs: btrfs: Add U-Boot fs handlers.Marek Behún
Signed-off-by: Marek Behun <marek.behun@nic.cz> create mode 100644 fs/btrfs/Kconfig create mode 100644 fs/btrfs/Makefile create mode 100644 fs/btrfs/btrfs.c create mode 100644 include/btrfs.h
2017-10-02fs: btrfs: Add single-device read-only BTRFS implementationMarek Behún
This adds the proper implementation for the BTRFS filesystem. The implementation currently supports only read-only mode and the filesystem can be only on a single device. Checksums of data chunks is unimplemented. Compression is implemented (ZLIB + LZO). Signed-off-by: Marek Behun <marek.behun@nic.cz> create mode 100644 fs/btrfs/btrfs.h create mode 100644 fs/btrfs/chunk-map.c create mode 100644 fs/btrfs/compression.c create mode 100644 fs/btrfs/ctree.c create mode 100644 fs/btrfs/dev.c create mode 100644 fs/btrfs/dir-item.c create mode 100644 fs/btrfs/extent-io.c create mode 100644 fs/btrfs/hash.c create mode 100644 fs/btrfs/inode.c create mode 100644 fs/btrfs/root.c create mode 100644 fs/btrfs/subvolume.c create mode 100644 fs/btrfs/super.c
2017-10-02fs: btrfs: Add disk-to-cpu and cpu-to-disk conversion functionsMarek Behún
BTRFS on disk structures are stored in Little Endian. Add functions to convert this structures to cpu and to disk format. On Little Endian hosts, these functions do nothing. On Big Endian the CALL_MACRO_FROM_EACH from variadic-macro.h is used to define all the members for each structure on which cpu_to_le* or le*_to_cpu is to be called. Signed-off-by: Marek Behun <marek.behun@nic.cz> create mode 100644 fs/btrfs/conv-funcs.h
2017-10-02fs: btrfs: Add btrfs_tree.h and ctree.h from Linux (and modified)Marek Behún
Add btrfs_tree.h and ctree.h from Linux which contains constants and structures for the BTRFS filesystem. Signed-off-by: Marek Behun <marek.behun@nic.cz> create mode 100644 fs/btrfs/btrfs_tree.h create mode 100644 fs/btrfs/ctree.h
2017-10-02fs: Create a common fs_devread for ext4/reiserfs/zfsMarek Behún
The ext4, reiserfs and zfs filesystems all have their own implementation of the same function, *_devread. Generalize this function into fs_devread and put the code into fs/fs_internal.c. Signed-off-by: Marek Behun <marek.behun@nic.cz> [trini: Move fs/fs_internal.o hunk to the end of fs/Makefile as all cases need it] Signed-off-by: Tom Rini <trini@konsulko.com>
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