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openwrtv3/tools/mtd-utils/patches/136-mkfs.ubifs-xz-support.patch
Gabor Juhos c503f44f9c tools/mtd-utils: add XZ compression support to mkfs.ubifs 
SVN-Revision: 30795
2012-03-02 23:09:01 +00:00

286 lines
7.5 KiB
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--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# -*- sh -*-
-CPPFLAGS += -I./include $(ZLIBCPPFLAGS) $(LZOCPPFLAGS) -I./include/linux/lzma
+CPPFLAGS += -I./include $(ZLIBCPPFLAGS) $(LZOCPPFLAGS) $(XZCPPFLAGS) -I./include/linux/lzma
ifeq ($(WITHOUT_XATTR), 1)
CPPFLAGS += -DWITHOUT_XATTR
--- a/mkfs.ubifs/compr.c
+++ b/mkfs.ubifs/compr.c
@@ -127,6 +127,114 @@ static inline int lzo_init(void) { retur
static inline void lzo_fini(void) { }
#endif
+#ifndef WITHOUT_XZ
+
+#include <lzma.h>
+
+struct xz_ctx {
+ lzma_filter filters[3];
+ lzma_options_lzma opts;
+};
+
+static struct xz_ctx *xz_ctx;
+
+#define LZMA_COMPRESSION_LEVEL 9
+
+static struct xz_ctx *xz_ctx_init(void)
+{
+ struct xz_ctx *ctx;
+ lzma_options_lzma *opts_lzma;
+ uint32_t preset;
+ int ret;
+
+ ctx = malloc(sizeof(struct xz_ctx));
+ if (ctx == NULL)
+ goto err;
+
+ memset(ctx, 0, sizeof(struct xz_ctx));
+
+ opts_lzma = &ctx->opts;
+
+ preset = LZMA_COMPRESSION_LEVEL | LZMA_PRESET_EXTREME;
+ ret = lzma_lzma_preset(opts_lzma, preset);
+ if (ret)
+ goto err_free_ctx;
+
+ /* TODO: allow to specify LZMA options via command line */
+#if 0
+ opts_lzma->lc = 3;
+ opts_lzma->lp = 0;
+ opts_lzma->pb = 2;
+ opts_lzma->nice_len = 64;
+#else
+ opts_lzma->lc = 0;
+ opts_lzma->lp = 2;
+ opts_lzma->pb = 2;
+ opts_lzma->nice_len = 64;
+#endif
+
+ ctx->filters[0].id = LZMA_FILTER_LZMA2;
+ ctx->filters[0].options = opts_lzma;
+ ctx->filters[1].id = LZMA_VLI_UNKNOWN;
+
+ return ctx;
+
+err_free_ctx:
+ free(ctx);
+err:
+ return NULL;
+}
+
+static void xz_ctx_free(struct xz_ctx *ctx)
+{
+ free(ctx);
+}
+
+static int xz_init(void)
+{
+ xz_ctx = xz_ctx_init();
+ if (xz_ctx == NULL)
+ return -1;
+
+ return 0;
+}
+
+static void xz_fini(void)
+{
+ xz_ctx_free(xz_ctx);
+}
+
+static int xz_compress(void *in_buf, size_t in_len, void *out_buf,
+ size_t *out_len)
+{
+ size_t ret_len;
+ lzma_ret ret_xz;
+ int ret;
+
+ ret = -1;
+
+ ret_len = 0;
+ ret_xz = lzma_stream_buffer_encode(xz_ctx->filters, LZMA_CHECK_CRC32,
+ NULL, in_buf, in_len, out_buf,
+ &ret_len, *out_len);
+ if (ret_xz != LZMA_OK) {
+ fprintf(stderr, "XZ error: %d\n", (int) ret_xz);
+ goto out;
+ }
+
+ *out_len = ret_len;
+
+ ret = 0;
+out:
+ return ret;
+}
+#else
+static inline int xz_init(void) { return 0; }
+static inline void xz_fini(void) { }
+static inline int xz_compress(void *in_buf, size_t in_len, void *out_buf,
+ size_t *out_len) { return -1; }
+#endif
+
static int no_compress(void *in_buf, size_t in_len, void *out_buf,
size_t *out_len)
{
@@ -199,6 +307,9 @@ int compress_data(void *in_buf, size_t i
case MKFS_UBIFS_COMPR_LZO:
ret = lzo_compress(in_buf, in_len, out_buf, out_len);
break;
+ case MKFS_UBIFS_COMPR_XZ:
+ ret = xz_compress(in_buf, in_len, out_buf, out_len);
+ break;
case MKFS_UBIFS_COMPR_ZLIB:
ret = zlib_deflate(in_buf, in_len, out_buf, out_len);
break;
@@ -226,12 +337,18 @@ int init_compression(void)
if (ret)
goto err;
+ ret = xz_init();
+ if (ret)
+ goto err_lzo;
+
zlib_buf = malloc(UBIFS_BLOCK_SIZE * WORST_COMPR_FACTOR);
if (!zlib_buf)
- goto err_lzo;
+ goto err_xz;
return 0;
+err_xz:
+ xz_fini();
err_lzo:
lzo_fini();
err:
@@ -241,6 +358,7 @@ err:
void destroy_compression(void)
{
free(zlib_buf);
+ xz_fini();
lzo_fini();
if (errcnt)
fprintf(stderr, "%llu compression errors occurred\n", errcnt);
--- a/mkfs.ubifs/compr.h
+++ b/mkfs.ubifs/compr.h
@@ -36,6 +36,7 @@ enum compression_type
MKFS_UBIFS_COMPR_NONE,
MKFS_UBIFS_COMPR_LZO,
MKFS_UBIFS_COMPR_ZLIB,
+ MKFS_UBIFS_COMPR_XZ,
};
int compress_data(void *in_buf, size_t in_len, void *out_buf, size_t *out_len,
--- a/mkfs.ubifs/Makefile
+++ b/mkfs.ubifs/Makefile
@@ -6,21 +6,33 @@ ALL_SOURCES=*.[ch] hashtable/*.[ch]
TARGETS = mkfs.ubifs
+MKFS_UBIFS_OBJS = $(addprefix $(BUILDDIR)/,\
+ crc16.o lpt.o compr.o devtable.o \
+ hashtable/hashtable.o hashtable/hashtable_itr.o)
+
ifeq ($(WITHOUT_LZO), 1)
CPPFLAGS += -DWITHOUT_LZO
else
LZOLDLIBS = -llzo2
endif
-LDLIBS_mkfs.ubifs = -lz $(LZOLDLIBS) -lm -luuid -L$(BUILDDIR)/../ubi-utils/ -lubi
+ifeq ($(WITHOUT_XZ), 1)
+ CPPFLAGS += -DWITHOUT_XZ
+else
+ifneq ($(LZMA_STATIC_LIB),)
+ MKFS_UBIFS_OBJS += $(LZMA_STATIC_LIB)
+else
+ XZLDLIBS = -llzma
+endif
+endif
+
+LDLIBS_mkfs.ubifs = -lz $(LZOLDLIBS) $(XZLDLIBS) -lm -luuid -L$(BUILDDIR)/../ubi-utils/ -lubi
LDLIBS_mkfs.ubifs += -L$(BUILDDIR)/../lib -lmtd
-LDLIBS_mkfs.ubifs += $(ZLIBLDFLAGS) $(LZOLDFLAGS)
+LDLIBS_mkfs.ubifs += $(ZLIBLDFLAGS) $(LZOLDFLAGS) $(XZLDFLAGS)
include ../common.mk
-$(BUILDDIR)/mkfs.ubifs: $(addprefix $(BUILDDIR)/,\
- crc16.o lpt.o compr.o devtable.o \
- hashtable/hashtable.o hashtable/hashtable_itr.o)
+$(BUILDDIR)/mkfs.ubifs: $(MKFS_UBIFS_OBJS)
clean::
rm -f $(BUILDDIR)/hashtable/*.o cscope.*
--- a/mkfs.ubifs/mkfs.ubifs.c
+++ b/mkfs.ubifs/mkfs.ubifs.c
@@ -178,8 +178,8 @@ static const char *helptext =
"-o, --output=FILE output to FILE\n"
"-j, --jrn-size=SIZE journal size\n"
"-R, --reserved=SIZE how much space should be reserved for the super-user\n"
-"-x, --compr=TYPE compression type - \"lzo\", \"favor_lzo\", \"zlib\" or\n"
-" \"none\" (default: \"lzo\")\n"
+"-x, --compr=TYPE compression type - \"lzo\", \"favor_lzo\", \"zlib\",\n"
+" \"xz\" or \"none\" (default: \"lzo\")\n"
"-X, --favor-percent may only be used with favor LZO compression and defines\n"
" how many percent better zlib should compress to make\n"
" mkfs.ubifs use zlib instead of LZO (default 20%)\n"
@@ -208,7 +208,7 @@ static const char *helptext =
"-h, --help display this help text\n\n"
"Note, SIZE is specified in bytes, but it may also be specified in Kilobytes,\n"
"Megabytes, and Gigabytes if a KiB, MiB, or GiB suffix is used.\n\n"
-"If you specify \"lzo\" or \"zlib\" compressors, mkfs.ubifs will use this compressor\n"
+"If you specify \"lzo\", \"xz\" or \"zlib\" compressors, mkfs.ubifs will use this compressor\n"
"for all data. The \"none\" disables any data compression. The \"favor_lzo\" is not\n"
"really a separate compressor. It is just a method of combining \"lzo\" and \"zlib\"\n"
"compressors. Namely, mkfs.ubifs tries to compress data with both \"lzo\" and \"zlib\"\n"
@@ -653,10 +653,13 @@ static int get_options(int argc, char**a
c->favor_lzo = 1;
else if (strcmp(optarg, "zlib") == 0)
c->default_compr = UBIFS_COMPR_ZLIB;
+ else if (strcmp(optarg, "xz") == 0)
+ c->default_compr = UBIFS_COMPR_XZ;
else if (strcmp(optarg, "none") == 0)
c->default_compr = UBIFS_COMPR_NONE;
else if (strcmp(optarg, "lzo") != 0)
- return err_msg("bad compressor name");
+ return err_msg("bad compressor name '%s'",
+ optarg);
break;
case 'X':
c->favor_percent = strtol(optarg, &endp, 0);
@@ -765,6 +768,9 @@ static int get_options(int argc, char**a
case UBIFS_COMPR_ZLIB:
printf("\tcompr: zlib\n");
break;
+ case UBIFS_COMPR_XZ:
+ printf("\tcompr: xz\n");
+ break;
case UBIFS_COMPR_NONE:
printf("\tcompr: none\n");
break;
--- a/mkfs.ubifs/mkfs.ubifs.h
+++ b/mkfs.ubifs/mkfs.ubifs.h
@@ -77,6 +77,9 @@
#if MKFS_UBIFS_COMPR_ZLIB != UBIFS_COMPR_ZLIB
#error MKFS_UBIFS_COMPR_ZLIB != UBIFS_COMPR_ZLIB
#endif
+#if MKFS_UBIFS_COMPR_XZ != UBIFS_COMPR_XZ
+#error MKFS_UBIFS_COMPR_XZ != UBIFS_COMPR_XZ
+#endif
extern int verbose;
extern int debug_level;
--- a/mkfs.ubifs/ubifs-media.h
+++ b/mkfs.ubifs/ubifs-media.h
@@ -303,6 +303,7 @@ enum {
UBIFS_COMPR_NONE,
UBIFS_COMPR_LZO,
UBIFS_COMPR_ZLIB,
+ UBIFS_COMPR_XZ,
UBIFS_COMPR_TYPES_CNT,
};
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