mtd-utils.git/ubifs-utils/mkfs.ubifs/compr.c, branch v2.3.1

ubifs-utils: Split common source files from mkfs.ubifs

2024-11-11T09:32:45+00:00

Split common source files into common dir from mkfs.ubifs, this is a preparation for importing libubifs(from linux kernel) to replace current UBIFS libs. Signed-off-by: Zhihao Cheng Signed-off-by: David Oberhollenzer

Make it possible to compile mkfs.ubifs without zlib

2024-02-18T13:22:08+00:00

This one is a bit trickier than adding WITH_ZLIB ifdefs. Some parts of the code assume that zlib is always present and have complicated fallback behavior. Particularly the "favor_lzo" compression method that uses either zlib or lzo, whichever produces the better result. Signed-off-by: David Oberhollenzer

Cleanup handling of optional dependencies

2024-02-15T14:07:17+00:00

Don't use super pedantic parsing of the argument and work with the generated variable instead of assigning it to our own and set it to "check" if not value is assigned. Then search for a dependency if the with variable is anything other than "no" and fail if it was set to "yes". In addition, the WITHOUT_xxx defines are replaced with WITH_xxx defines. Signed-off-by: David Oberhollenzer

mkfs.ubifs: fix compilation without ZSTD

2019-07-16T05:53:33+00:00

Fix a trivial typo to make sure that zstd.h is included only if zstd is not disabled. Signed-off-by: Martin Kaiser Signed-off-by: David Oberhollenzer

mkfs.ubifs: remove ZSTD_CLEVEL_DEFAULT for backwards compatibillity

2019-07-09T10:34:04+00:00

Support for ZSTD compression has been added recently through the ZSTD library, which is famously known for its incredibly well designed and stable API. This patch removes usage of ZSTD_CLEVEL_DEFAULT, which isn't exposed in older versions of the ZSTD library, and replaces it with with the constant parameter 0. According to the documentation this should then use a reasonable default (which is defined internally). Other possible approachs include defining ZSTD_CLEVEL_DEFAULT to 3 (the value it _currently_ has) if it isn't defined. This patch chooses the approach of passing 0 since this seems to be encouraged by the existing documentation. Signed-off-by: David Oberhollenzer

mkfs.ubifs: Add ZSTD compression

2019-06-01T17:38:44+00:00

I added ZSTD support to mkfs.ubifs and compared the ZSTD results with zlib/lzo and the available ZSTD compression levels. The results are in the following table: Comp image MiB time image2 MiB time none 271 0m 0,723s 223 0m 0,589s lzo 164 0m13,705s 116 0m11,636s zlib 150 0m 7,654s 103 0m 6,347s favor-lzo 158 0m21,137s 110 0m17,764s zstd-01 154 0m 1,607s 106 0m 1,429s zstd-02 153 0m 1,704s 105 0m 1,479s zstd-03* 152 0m 1,888s 104 0m 1,668s zstd-04 151 0m 2,741s 103 0m 2,391s zstd-05 150 0m 3,257s 102 0m 2,916s zstd-06 150 0m 3,735s 102 0m 3,356s zstd-07 150 0m 4,066s 102 0m 3,705s zstd-08 152 0m 1,857s 104 0m 1,644s zstd-09 152 0m 1,855s 104 0m 1,639s zstd-10 150 0m 6,654s 102 0m 6,195s zstd-11 150 0m10,027s 102 0m 9,130s zstd-12 149 0m14,724s 101 0m13,415s zstd-13 148 0m18,232s 100 0m16,719s zstd-14 148 0m20,859s 100 0m19,554s zstd-15 148 0m25,033s 100 0m23,186s zstd-16 148 0m38,837s 100 0m36,543s zstd-17 148 0m46,051s 100 0m43,120s zstd-18 148 0m49,157s 100 0m45,807s zstd-19 148 0m49,421s 100 0m45,951s zstd-20 148 0m51,271s 100 0m48,030s zstd-21 148 0m51,015s 100 0m48,676s zstd-22 148 0m52,575s 100 0m50,013s The UBIFS image was created via mkfs.ubifs -x $Comp -m 512 -e 128KiB -c 2200 -r $image $out I used "debootstrap sid" to create a basic RFS and the results are in the `image' column. The image2 column denotes the results for the same image but with .deb files removed. The time column contains the output of the run time of the command. ZSTD's compression level three is currently default. Based on the compression results (for the default level) it outperforms LZO in run time and compression and is almost as good as ZLIB in terms of compression but quicker. The higher compression levels make almost no difference in compression but take a lot of time. The compression level used is the default offered by ZSTD. It does not make sense the higher levels. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: David Oberhollenzer

mkfs.ubifs: fix compiler warning for WITHOUT_LZO

2015-11-12T18:20:42+00:00

Fix compiler warning about an unused variable. ubifs-utils/mkfs.ubifs/compr.c:41:27: warning: ‘c’ defined but not used [-Wunused-variable] static struct ubifs_info *c = &info_; Signed-off-by: Daniel Walter Signed-off-by: Brian Norris

fix build when WITHOUT_LZO is set

2015-11-12T10:05:55+00:00

Make mkfs.ubifs honor the WITHOUT_LZO flag, too. Fixes this build error: mkfs.ubifs/compr.c:27:23: lzo/lzo1x.h: No such file or directory mkfs.ubifs/compr.c: In function `lzo_compress': mkfs.ubifs/compr.c:92: error: `lzo_uint' undeclared (first use in this function) mkfs.ubifs/compr.c:92: error: (Each undeclared identifier is reported only once mkfs.ubifs/compr.c:92: error: for each function it appears in.) mkfs.ubifs/compr.c:92: error: syntax error before "len" mkfs.ubifs/compr.c:95: error: `len' undeclared (first use in this function) mkfs.ubifs/compr.c:96: warning: implicit declaration of function `lzo1x_999_compress' mkfs.ubifs/compr.c:99: error: `LZO_E_OK' undeclared (first use in this function) mkfs.ubifs/compr.c: In function `init_compression': mkfs.ubifs/compr.c:201: error: `LZO1X_999_MEM_COMPRESS' undeclared (first use in this function) Signed-off-by: Rolf Eike Beer Signed-off-by: Richard Weinberger

mtd-utils: Restructure the mtd-utils source.

2015-11-11T22:38:40+00:00

* There is no code modification in this commit, only moving * the files to proper place. The user tools looks a little messy as we place almost the all tools in the root directory of mtd-utils. To make it more clear, I propose to introduce the following structure for our source code. mtd-utils/ |-- lib |-- include |-- misc-utils |-- jffsX-utils |-- nand-utils |-- nor-utils |-- ubi-utils |-- ubifs-utils `-- tests Signed-off-by: Dongsheng Yang Signed-off-by: Brian Norris