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path: root/fs/ubifs/scan.c
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2015-03-25UBIFS: extend debug/message capabilitiesSheng Yong1-12/+12
In the case where we have more than one volumes on different UBI devices, it may be not that easy to tell which volume prints the messages. Add ubi number and volume id in ubifs_msg/warn/error to help debug. These two values are passed by struct ubifs_info. For those where ubifs_info is not initialized yet, ubifs_* is replaced by pr_*. For those where ubifs_info is not avaliable, ubifs_info is passed to the calling function as a const parameter. The output looks like, [ 95.444879] UBIFS (ubi0:1): background thread "ubifs_bgt0_1" started, PID 696 [ 95.484688] UBIFS (ubi0:1): UBIFS: mounted UBI device 0, volume 1, name "test1" [ 95.484694] UBIFS (ubi0:1): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes [ 95.484699] UBIFS (ubi0:1): FS size: 30220288 bytes (28 MiB, 238 LEBs), journal size 1523712 bytes (1 MiB, 12 LEBs) [ 95.484703] UBIFS (ubi0:1): reserved for root: 1427378 bytes (1393 KiB) [ 95.484709] UBIFS (ubi0:1): media format: w4/r0 (latest is w4/r0), UUID 40DFFC0E-70BE-4193-8905-F7D6DFE60B17, small LPT model [ 95.489875] UBIFS (ubi1:0): background thread "ubifs_bgt1_0" started, PID 699 [ 95.529713] UBIFS (ubi1:0): UBIFS: mounted UBI device 1, volume 0, name "test2" [ 95.529718] UBIFS (ubi1:0): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes [ 95.529724] UBIFS (ubi1:0): FS size: 19808256 bytes (18 MiB, 156 LEBs), journal size 1015809 bytes (0 MiB, 8 LEBs) [ 95.529727] UBIFS (ubi1:0): reserved for root: 935592 bytes (913 KiB) [ 95.529733] UBIFS (ubi1:0): media format: w4/r0 (latest is w4/r0), UUID EEB7779D-F419-4CA9-811B-831CAC7233D4, small LPT model [ 954.264767] UBIFS error (ubi1:0 pid 756): ubifs_read_node: bad node type (255 but expected 6) [ 954.367030] UBIFS error (ubi1:0 pid 756): ubifs_read_node: bad node at LEB 0:0, LEB mapping status 1 Signed-off-by: Sheng Yong <shengyong1@huawei.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2014-07-19UBIFS: fix spelling of "scanned"Artem Bityutskiy1-2/+2
Randy Dunlap pointed that we should use "scanned" instead of "scaned". This patch makes the correction. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2014-07-19UBIFS: fix some commentsSeunghun Lee1-3/+2
This patch fixes some comments about return type. Signed-off-by: Seunghun Lee <waydi1@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2014-07-19UBIFS: remove useless @ecc in struct ubifs_scan_lebhujianyang1-3/+4
We set @ecc in ubifs_scan_leb only if leb_read returns EBADMSG and do not use it any more. This patch removes this variable and adds comments about EBADMSG handling. Artem: re-phrase commentaries Signed-off-by: hujianyang <hujianyang@huawei.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-08-31UBIFS: comply with coding styleArtem Bityutskiy1-3/+4
Join all the split printk lines in order to stop checkpatch complaining. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-08-23UBIFS: improve scanning debug outputArtem Bityutskiy1-4/+4
Include LEB number and offset in scanning debugging output. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-08-22UBIFS: always print full error reportsArtem Bityutskiy1-2/+0
Even when we are emulating power cuts, otherwise it is difficult to investigate failures during emulated power cuts testing. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-16UBIFS: get rid of dbg_errArtem Bityutskiy1-6/+6
This patch removes the 'dbg_err()' macro and we now use 'ubifs_err()' instead. The idea of 'dbg_err()' was to compile out some error message to make the binary a bit smaller - but I think it was a bad idea. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-05-16UBIFS: rename dumping functionsArtem Bityutskiy1-1/+1
This commit re-names all functions which dump something from "dbg_dump_*()" to "ubifs_dump_*()". This is done for consistency with UBI and because this way it will be more logical once we remove the debugging sompilation option. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2011-07-04UBIFS: switch to ubifs_leb_readArtem Bityutskiy1-1/+1
Instead of using 'ubi_read()' function directly, used the 'ubifs_leb_read()' helper function instead. This allows to get rid of several redundant error messages and make sure that we always have a stack dump on read errors. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-07-04UBIFS: introduce helper functions for debugging checks and testsArtem Bityutskiy1-1/+1
This patch introduces helper functions for all debugging checks, so instead of doing if (!(ubifs_chk_flags & UBIFS_CHK_GEN)) we now do if (!dbg_is_chk_gen(c)) This is a preparation to further changes where the flags will go away, and we'll need to only change the helper functions, but the code which utilizes them won't be touched. At the same time this patch removes 'dbg_force_in_the_gaps()', 'dbg_force_in_the_gaps_enabled()', and dbg_failure_mode helpers for consistency. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-02-06UBIFS: remove double semicolonArtem Bityutskiy1-1/+1
Just a tiny clean-up - remove ;; Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-08-30UBIFS: mark unused key objects as invalidArtem Bityutskiy1-1/+4
When scanning the flash, UBIFS builds a list of flash nodes of type 'struct ubifs_scan_node'. Each scanned node has a 'snod->key' field. This field is valid for most of the nodes, but invalid for some node type, e.g., truncation nodes. It is safer to explicitly initialize such keys to something invalid, rather than leaving them initialized to all zeros, which has key type of UBIFS_INO_KEY. This patch introduces new "fake" key type UBIFS_INVALID_KEY and initializes unused 'snod->key' objects to this type. It also adds debugging assertions in the TNC code to make sure no one ever tries to look these nodes up in the TNC. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2010-08-30UBIFS: do not write rubbish into truncation scanning nodeArtem Bityutskiy1-1/+0
In the scanning code, in 'ubifs_add_snod()', we write rubbish into 'snod->key', because we assume that on-flash truncation nodes have a key, but they do not. If the other parts of UBIFS then mistakenly try to look-up the truncation node key (they should not do this, but may do because of a bug), we can succeed and corrupt TNC. It looks like we did have such a situation in 'sort_nodes()' in gc.c. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-09-10UBIFS: do not print scary error messages needlesslyArtem Bityutskiy1-10/+22
At the moment UBIFS print large and scary error messages and flash dumps in case of nearly any corruption, even if it is a recoverable corruption. For example, if the master node is corrupted, ubifs_scan() prints error dumps, then UBIFS recovers just fine and goes on. This patch makes UBIFS print scary error messages only in real cases, which are not recoverable. It adds 'quiet' argument to the 'ubifs_scan()' function, so the caller may ask 'ubi_scan()' not to print error messages if the caller is able to do recovery. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
2009-07-09UBIFS: small amendments in the LEB scanning codeArtem Bityutskiy1-5/+9
This patch fixes few minor things I've spotted while going through code: 1. Better document return codes 2. If 'ubifs_scan_a_node()' returns some thing we do not expect, treat this as an error. 3. Try to do recovery only when 'ubifs_scan()' returns %-EUCLEAN, not on any error. 4. If empty space starts at a non-aligned address, print a message. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
2009-07-09UBIFS: dump a little more in case of corruptionsArtem Bityutskiy1-3/+3
In case of corruptions, dump 8192 bytes instead of 4096. The largest node is 4096+ bytes, so it is better to see a node boundary, which is not always possible when only 4096 bytes are printed. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
2008-09-30UBIFS: add no_chk_data_crc mount optionAdrian Hunter1-1/+1
UBIFS read performance can be improved by skipping the CRC check when data nodes are read. This option can be used if the underlying media is considered to be highly reliable. Note that CRCs are always checked for metadata. Read speed on Arm platform with OneNAND goes from 19 MiB/s to 27 MiB/s with data CRC checking disabled. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
2008-07-15UBIFS: add new flash file systemArtem Bityutskiy1-0/+362
This is a new flash file system. See http://www.linux-mtd.infradead.org/doc/ubifs.html Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
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