summaryrefslogtreecommitdiff
path: root/fs/ext4
Commit message (Collapse)AuthorAgeLines
* ext4fs: Add ext4 extent cache for read operationsIonut Nicu2014-02-21-73/+130
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In an ext4 filesystem, the inode corresponding to a file has a 60-byte area which contains an extent header structure and up to 4 extent structures (5 x 12 bytes). For files that need more than 4 extents to be represented (either files larger than 4 x 128MB = 512MB or smaller files but very fragmented), ext4 creates extent index structures. Each extent index points to a 4KB physical block where one extent header and additional 340 extents could be stored. The current u-boot ext4 code is very inefficient when it tries to load a file which has extent indexes. For each logical file block the code will read over and over again the same blocks of 4096 bytes from the disk. Since the extent tree in a file is always the same, we can cache the extent structures in memory before actually starting to read the file. This patch creates a simple linked list of structures holding information about all the extents used to represent a file. The list is sorted by the logical block number (ee_block) so that we can easily find the proper extent information for any file block. Without this patch, a 69MB file which had just one extent index pointing to a block with another 6 extents was read in approximately 3 minutes. With this patch applied the same file can be read in almost 20 seconds. Signed-off-by: Ionut Nicu <ioan.nicu.ext@nsn.com>
* ext4: implement exists() for ext4fsStephen Warren2014-02-19-0/+8
| | | | | | | | This hooks into the generic "file exists" support added in an earlier patch, and provides an implementation for the ext4 filesystem. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
* ext4fs: fix "invalid extent block" errorIonut Nicu2014-01-20-1/+1
| | | | | | | | | | | | | | | | | | | | | | For files where we actually have extent indexes following an extent header (ext_block->eh_depth != 0), the do/while loop from ext4fs_get_extent_block() does not select the proper extent index structure. For example, if we have: ext_block->eh_depth = 1 ext_block->eh_entries = 1 fileblock = 0 index[0].ei_block = 0 the do/while loop will exit with i set to 0 and the ext4fs_get_extent_block() function will return 0, even if there was a valid extent index structure following the header. Signed-off-by: Ionut Nicu <ioan.nicu.ext@nsn.com> Signed-off-by: Mathias Rulf <mathias.rulf@nsn.com>
* ext4fs: use EXT2_BLOCK_SIZE instead of fs->blkszIonut Nicu2014-01-20-2/+2
| | | | | | | | | | Using fs->blksz in ext4fs_get_extent_block() is not correct since fs->blksz is not initialized on the read path. Use EXT2_BLOCK_SIZE() instead which will produce the desired output. Signed-off-by: Ionut Nicu <ioan.nicu.ext@nsn.com> Signed-off-by: Mathias Rulf <mathias.rulf@nsn.com>
* fs/ext4: fix calling put_ext4 with truncated offsetMa Haijun2014-01-20-28/+28
| | | | | | | | | | | | Curently, we are using 32 bit multiplication to calculate the offset, so the result will always be 32 bit. This can silently cause file system corruption when performing a write operation on partition larger than 4 GiB. This patch address the issue by simply promoting the terms to 64 bit, and let compilers decide how to do the multiplication efficiently. Signed-off-by: Ma Haijun <mahaijuns@gmail.com>
* fs/ext4: fix partition size get truncated in calculationMa Haijun2014-01-20-1/+1
| | | | | | | It may cause file system corruption when do a write operation. This issue only affects boards that use 32 bit lbaint_t. Signed-off-by: Ma Haijun <mahaijuns@gmail.com>
* fs: descend into sub directories when it is necessaryMasahiro Yamada2013-11-17-1/+1
| | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* fs: convert makefiles to Kbuild styleMasahiro Yamada2013-10-31-25/+2
| | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-117/+8
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* ext4fs: le32_to_cpu() used on a 16-bit fieldRommel Custodio2013-07-22-6/+6
| | | | | | | | | | | | | | Fix reading ext4_extent_header struture on BE machines. Some 16 bit fields where converted to 32 bit fields, due to the byte swap on BE machines the containing value was corrupted. Therefore reading ext4 filesystems on BE machines where broken before. Signed-off-by: Rommel Custodio <sessyargc+uboot@gmail.com> [sent via git-send-email; rework commit message] Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org> Tested-by: Lukasz Majewski <l.majewski@samsung.com>
* Fix ext2/ext4 filesystem accesses beyond 2TiBFrederic Leroy2013-07-15-60/+80
| | | | | | | | | | | | | | | | | With CONFIG_SYS_64BIT_LBA, lbaint_t gets defined as a 64-bit type, which is required to represent block numbers for storage devices that exceed 2TiB (the block size usually is 512B), e.g. recent hard drives We now use lbaint_t for partition offset to reflect the lbaint_t change, and access partitions beyond or crossing the 2.1TiB limit. This required changes to signature of ext4fs_devread(), and type of all variables relatives to block sector. ext2/ext4 fs uses logical block represented by a 32 bit value. Logical block is a multiple of device block sector. To avoid overflow problem when calling ext4fs_devread(), we need to cast the sector parameter. Signed-off-by: Frédéric Leroy <fredo@starox.org>
* ext4: assign get_fs()->dev_desc before using itStephen Warren2013-05-24-1/+1
| | | | | | | | | | | | Commit 50ce4c0 "fs/ext4: Support device block sizes != 512 bytes" modified ext4fs_set_blk_dev() to calculate total_sect based on get_fs()->dev_desc->log2blksz rather than SECTOR_SIZE. However, this value wasn't yet assigned. Move the assignment earlier so the code doesn't crash or hang. Cc: Egbert Eich <eich@suse.com> Tested-by: Tom Rini <trini@ti.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* fs/ext4: Support device block sizes != 512 bytesEgbert Eich2013-05-10-67/+91
| | | | | | | | | The 512 byte block size was hard coded in the ext4 file systems. Large harddisks today support bigger block sizes typically 4096 bytes. This patch removes this limitation. Signed-off-by: Egbert Eich <eich@suse.com>
* Consolidate bool typeYork Sun2013-04-01-6/+4
| | | | | | | | | | | | | 'bool' is defined in random places. This patch consolidates them into a single header file include/linux/types.h, using stdbool.h introduced in C99. All other #define, typedef and enum are removed. They are all consistent with true = 1, false = 0. Replace FALSE, False with false. Replace TRUE, True with true. Skip *.py, *.php, lib/* files. Signed-off-by: York Sun <yorksun@freescale.com>
* fs: Move ls and read methods into ext4, fatSimon Glass2013-03-04-0/+37
| | | | | | | | | It doesn't make a lot of sense to have these methods in fs.c. They are filesystem-specific, not generic code. Add each to the relevant filesystem and remove the associated #ifdefs in fs.c. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
* ext4: Split write support into its own fileSimon Glass2013-03-04-964/+997
| | | | | | | This code seems to be entirely othogonal, so remove the #ifdef and put the condition in the Makefile instead. Signed-off-by: Simon Glass <sjg@chromium.org>
* fs:ext4:write: Initialize cache aligned filename bufferŁukasz Majewski2012-12-07-2/+3
| | | | | | | | | | | The filename buffer is allocated dynamically. It must be cache aligned. Moreover, it is necessary to erase its content before we use it for file name operations. This prevents from corruption of written file names. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* fs:ext4:fix: Code refactoring to suppress compiler warningsŁukasz Majewski2012-12-07-9/+11
| | | | | | | | Several fixes to suppress compiler's (eldk-5.[12].x gcc 4.6) warning [-Wunused-but-set-variable] Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* fs:ext4:write: Store block device descriptor in file system structureŁukasz Majewski2012-12-07-0/+1
| | | | | | | | | The device block descriptor (block_dev_desc_t) )shall be stored at ext4 early code (at ext4fs_set_blk_dev in this case) to be available for latter use (like put_ext4()). Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* fs:ext4:write: Add lldiv and do_div to perform 64-32 bits divisionŁukasz Majewski2012-12-07-2/+3
| | | | | | | | | | | | | | | | | | | | | | The ext4write code has been using direct calls to 64-32 division (/ and %). Officially supported u-boot toolchains (eldk-5.[12].x) generate calls to __aeabi_uldivmod(), which is niether defined in the toolchain libs nor u-boot source tree. Due to that, when the ext4write command has been executed, "undefined instruction" execption was generated (since the __aeabi_uldivmod() is not provided). To fix this error, lldiv() for division and do_div() for modulo have been used. Those two functions are recommended for performing 64-32 bit number division in u-boot. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* fs: separate CONFIG_FS_{FAT, EXT4} from CONFIG_CMD_{FAT, EXT*}Stephen Warren2012-10-29-9/+6
| | | | | | | | | | | | | | | | | | This makes the FAT and ext4 filesystem implementations build if CONFIG_FS_{FAT,EXT4} are defined, rather than basing the build on whether CONFIG_CMD_{FAT,EXT*} are defined. This will allow the filesystems to be built separately from the filesystem-specific commands that use them. This paves the way for the creation of filesystem-generic commands that used the filesystems, without requiring the filesystem- specific commands. Minor documentation changes are made for this change. The new config options are automatically selected by the old config options to retain backwards-compatibility. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
* ext4: Rename block group descriptor table from gd to bgdSimon Glass2012-10-03-90/+94
| | | | | | | | | | | On x86 machines gd is unfortunately a #define, so we should avoid using gd for anything. This patch changes uses of gd to bgd so that ext4fs can be used on x86. A better fix would be to remove the #define in x86, but I'm not sure how to do that. Signed-off-by: Simon Glass <sjg@chromium.org>
* cmd_extX: use common get_device_and_partition functionRob Herring2012-09-25-21/+13
| | | | | | | | Convert ext2/4 load, ls, and write functions to use common device and partition parsing function. With the common function "dev:part" can come from the environment and a '-' can be used in that case. Signed-off-by: Rob Herring <rob.herring@calxeda.com>
* ext4: remove init_fs/deinit_fsRob Herring2012-09-25-34/+2
| | | | | | | There's no real need to expose this and it can be removed by using a static allocation. Signed-off-by: Rob Herring <rob.herring@calxeda.com>
* ext4: cache-align buffers so the invalidation worksStephen Warren2012-09-20-4/+9
| | | | | | | | | | | | | | | | | | | | | DMA buffer cache invalidation requires that buffers have cache-aligned buffer locations and sizes. Use memalign() and ALLOC_CACHE_ALIGN_BUFFER() to ensure this. On Tegra at least, without this fix, the following fail commands fail in u-boot-master/ext4, but succeeded at the branch's branch point in u-boot/master. With this fix, the commands work again: ext2ls mmc 0:1 / ext2load mmc 0:1 /boot/zImage Cc: Uma Shankar <uma.shankar@samsung.com> Cc: Manjunatha C Achar <a.manjunatha@samsung.com> Cc: Iqbal Shareef <iqbal.ams@samsung.com> Cc: Hakgoo Lee <goodguy.lee@samsung.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Tom Rini <trini@ti.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* ext4fs write supportUma Shankar2012-08-09-0/+3226
| | | | | | | Signed-off-by: Uma Shankar <uma.shankar@samsung.com> Signed-off-by: Manjunatha C Achar <a.manjunatha@samsung.com> Signed-off-by: Iqbal Shareef <iqbal.ams@samsung.com> Signed-off-by: Hakgoo Lee <goodguy.lee@samsung.com>
* ext4fs ls load supportUma Shankar2012-08-09-0/+1365
Signed-off-by: Uma Shankar <uma.shankar@samsung.com> Signed-off-by: Manjunatha C Achar <a.manjunatha@samsung.com> Signed-off-by: Iqbal Shareef <iqbal.ams@samsung.com> Signed-off-by: Hakgoo Lee <goodguy.lee@samsung.com>
generated by cgit v1.1 at 2024-11-06 20:14:16 +0000