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authorFelix Fietkau <nbd@openwrt.org>2011-02-13 19:59:02 +0000
committerFelix Fietkau <nbd@openwrt.org>2011-02-13 19:59:02 +0000
commit23ef9fcc6a47f341fa117fdbbe4458fb3af35609 (patch)
tree9d258014ba40edf35ad97402c84c92ae09846e7e /tools
parentd030509845efbb5ea8af4acef9438d1cb1387641 (diff)
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squashfs4: make the lzma parameters configurable, and change the defaults for slightly improved compression on mips (mostly unchanged on other architectures)
SVN-Revision: 25530
Diffstat (limited to 'tools')
-rw-r--r--tools/squashfs4/patches/130-dynamic_lzma_params.patch91
-rw-r--r--tools/squashfs4/patches/130-lzma_props.patch11
2 files changed, 91 insertions, 11 deletions
diff --git a/tools/squashfs4/patches/130-dynamic_lzma_params.patch b/tools/squashfs4/patches/130-dynamic_lzma_params.patch
new file mode 100644
index 0000000..65fc3f6
--- /dev/null
+++ b/tools/squashfs4/patches/130-dynamic_lzma_params.patch
@@ -0,0 +1,91 @@
+--- a/squashfs-tools/lzma_wrapper.c
++++ b/squashfs-tools/lzma_wrapper.c
+@@ -20,6 +20,8 @@
+ */
+
+ #include <LzmaLib.h>
++#include <stdio.h>
++#include "compressor.h"
+
+ #define LZMA_HEADER_SIZE (LZMA_PROPS_SIZE + 8)
+
+@@ -30,9 +32,18 @@
+ size_t props_size = LZMA_PROPS_SIZE,
+ outlen = block_size - LZMA_HEADER_SIZE;
+ int res;
++ int lc;
++ int lp;
++ int pb;
++
++ if (!comp_args || sscanf(comp_args, "%d:%d:%d", &lc, &lp, &pb) != 3) {
++ lc = 0;
++ lp = 2;
++ pb = 2;
++ }
+
+ res = LzmaCompress(d + LZMA_HEADER_SIZE, &outlen, s, size, d,
+- &props_size, 5, block_size, 3, 0, 2, 32, 1);
++ &props_size, 5, block_size, lc, lp, pb, 32, 1);
+
+ if(res == SZ_ERROR_OUTPUT_EOF) {
+ /*
+--- a/squashfs-tools/compressor.c
++++ b/squashfs-tools/compressor.c
+@@ -25,6 +25,7 @@
+ #include "compressor.h"
+ #include "squashfs_fs.h"
+
++char *comp_args = NULL;
+ extern int gzip_compress(void **, char *, char *, int, int, int *);
+ extern int gzip_uncompress(char *, char *, int, int, int *);
+ extern int lzma_compress(void **, char *, char *, int, int, int *);
+--- a/squashfs-tools/compressor.h
++++ b/squashfs-tools/compressor.h
+@@ -31,3 +31,4 @@
+ extern struct compressor *lookup_compressor(char *);
+ extern struct compressor *lookup_compressor_id(int);
+ extern void display_compressors(char *, char *);
++extern char *comp_args;
+--- a/squashfs-tools/mksquashfs.c
++++ b/squashfs-tools/mksquashfs.c
+@@ -4355,6 +4355,12 @@
+ exit(1);
+ }
+ comp_name = argv[i];
++ } else if(strcmp(argv[i], "-comp_args") == 0) {
++ if(++i == argc) {
++ ERROR("%s: -comp_args missing compression arguments\n", argv[0]);
++ exit(1);
++ }
++ comp_args = argv[i];
+ } else if(strcmp(argv[i], "-pf") == 0) {
+ if(++i == argc) {
+ ERROR("%s: -pf missing filename\n", argv[0]);
+@@ -4574,6 +4580,7 @@
+ "[-e list of exclude\ndirs/files]\n", argv[0]);
+ ERROR("\nFilesystem build options:\n");
+ ERROR("-comp <comp>\t\tselect <comp> compression\n");
++ ERROR("-comp_args <comp>\t\tselect compression arguments\n");
+ ERROR("\t\t\tCompressors available:\n");
+ display_compressors("\t\t\t", COMP_DEFAULT);
+ ERROR("-b <block_size>\t\tset data block to "
+@@ -4736,7 +4743,8 @@
+ else if(strcmp(argv[i], "-root-becomes") == 0 ||
+ strcmp(argv[i], "-sort") == 0 ||
+ strcmp(argv[i], "-pf") == 0 ||
+- strcmp(argv[i], "-comp") == 0)
++ strcmp(argv[i], "-comp") == 0 ||
++ strcmp(argv[i], "-comp_args") == 0)
+ i++;
+
+ if(i != argc) {
+@@ -4761,7 +4769,8 @@
+ else if(strcmp(argv[i], "-root-becomes") == 0 ||
+ strcmp(argv[i], "-ef") == 0 ||
+ strcmp(argv[i], "-pf") == 0 ||
+- strcmp(argv[i], "-comp") == 0)
++ strcmp(argv[i], "-comp") == 0 ||
++ strcmp(argv[i], "-comp_args") == 0)
+ i++;
+
+ #ifdef SQUASHFS_TRACE
diff --git a/tools/squashfs4/patches/130-lzma_props.patch b/tools/squashfs4/patches/130-lzma_props.patch
deleted file mode 100644
index 3ac6b9b..0000000
--- a/tools/squashfs4/patches/130-lzma_props.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/squashfs-tools/lzma_wrapper.c
-+++ b/squashfs-tools/lzma_wrapper.c
-@@ -32,7 +32,7 @@ int lzma_compress(void **strm, char *des
- int res;
-
- res = LzmaCompress(d + LZMA_HEADER_SIZE, &outlen, s, size, d,
-- &props_size, 5, block_size, 3, 0, 2, 32, 1);
-+ &props_size, 5, block_size, 1, 2, 2, 32, 1);
-
- if(res == SZ_ERROR_OUTPUT_EOF) {
- /*