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-rw-r--r--bin/sqfs2tar/Makemodule.am3
-rw-r--r--bin/tar2sqfs/Makemodule.am2
-rw-r--r--configure.ac14
-rw-r--r--include/fstream.h4
-rw-r--r--lib/fstream/Makemodule.am6
-rw-r--r--lib/fstream/compress/bzip2.c87
-rw-r--r--lib/fstream/compress/ostream_compressor.c5
-rw-r--r--lib/fstream/compressor.c10
-rw-r--r--lib/fstream/internal.h4
-rw-r--r--lib/fstream/uncompress/autodetect.c1
-rw-r--r--lib/fstream/uncompress/bzip2.c87
-rw-r--r--lib/fstream/uncompress/istream_compressor.c5
12 files changed, 225 insertions, 3 deletions
diff --git a/bin/sqfs2tar/Makemodule.am b/bin/sqfs2tar/Makemodule.am
index 9dbfbbb..a28c3b8 100644
--- a/bin/sqfs2tar/Makemodule.am
+++ b/bin/sqfs2tar/Makemodule.am
@@ -4,7 +4,8 @@ sqfs2tar_SOURCES += bin/sqfs2tar/xattr.c
sqfs2tar_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS)
sqfs2tar_LDADD = libcommon.a libutil.a libsquashfs.la libtar.a
sqfs2tar_LDADD += libfstream.a libcompat.a libfstree.a
-sqfs2tar_LDADD += $(ZLIB_LIBS) $(XZ_LIBS) $(LZO_LIBS) $(PTHREAD_LIBS)
+sqfs2tar_LDADD += $(ZLIB_LIBS) $(XZ_LIBS) $(LZO_LIBS) $(BZIP2_LIBS)
+sqfs2tar_LDADD += $(PTHREAD_LIBS)
if WITH_OWN_ZLIB
sqfs2tar_LDADD += libz.la
diff --git a/bin/tar2sqfs/Makemodule.am b/bin/tar2sqfs/Makemodule.am
index 58d1ef9..ce66e5c 100644
--- a/bin/tar2sqfs/Makemodule.am
+++ b/bin/tar2sqfs/Makemodule.am
@@ -3,7 +3,7 @@ tar2sqfs_SOURCES += bin/tar2sqfs/options.c bin/tar2sqfs/process_tarball.c
tar2sqfs_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS)
tar2sqfs_LDADD = libcommon.a libsquashfs.la libtar.a libfstream.a
tar2sqfs_LDADD += libfstree.a libcompat.a libfstree.a $(LZO_LIBS)
-tar2sqfs_LDADD += $(ZLIB_LIBS) $(XZ_LIBS) $(PTHREAD_LIBS)
+tar2sqfs_LDADD += $(ZLIB_LIBS) $(XZ_LIBS) $(BZIP2_LIBS) $(PTHREAD_LIBS)
if WITH_OWN_ZLIB
tar2sqfs_LDADD += libz.la
diff --git a/configure.ac b/configure.ac
index b3bb300..3de1109 100644
--- a/configure.ac
+++ b/configure.ac
@@ -59,6 +59,11 @@ AM_CONDITIONAL([WINDOWS], [test "x$build_windows" = "xyes"])
##### config options #####
+AC_ARG_WITH([bzip2],
+ [AS_HELP_STRING([--with-bzip2],
+ [Build with bzip2 compression support])],
+ [], [with_bzip2="check"])
+
AC_ARG_WITH([xz],
[AS_HELP_STRING([--with-xz], [Build with xz compression support])],
[], [with_xz="check"])
@@ -138,6 +143,13 @@ fi
##### search for dependencies #####
+AS_IF([test "x$with_bzip2" != "xno"], [
+ PKG_CHECK_MODULES(BZIP2, [bzip2], [with_bzip2="yes"],
+ [AS_IF([test "x$with_bzip2" != "xcheck"],
+ [AC_MSG_ERROR([cannot Bzip2 libs])],
+ [with_bzip2="no"])])
+], [])
+
AS_IF([test "x$with_gzip" != "xno" -a "x$with_builtin_zlib" != "xyes"], [
PKG_CHECK_MODULES(ZLIB, [zlib], [with_gzip="yes"],
[AS_IF([test "x$with_gzip" != "xcheck"],
@@ -206,6 +218,7 @@ AS_IF([test "x$with_pthread" != "xno"], [
[with_pthread="no"])])
], [])
+AM_CONDITIONAL([WITH_BZIP2], [test "x$with_bzip2" = "xyes"])
AM_CONDITIONAL([WITH_GZIP], [test "x$with_gzip" = "xyes"])
AM_CONDITIONAL([WITH_XZ], [test "x$with_xz" = "xyes"])
AM_CONDITIONAL([WITH_LZ4], [test "x$with_lz4" = "xyes"])
@@ -276,6 +289,7 @@ AC_MSG_RESULT([
LZO support: ${with_lzo}
LZ4 support: ${with_lz4}
ZSTD support: ${with_zstd}
+ BZIP2 support: ${with_bzip2}
SELinux support: ${with_selinux}
Using pthreads: ${with_pthread}
diff --git a/include/fstream.h b/include/fstream.h
index a934c95..8693fff 100644
--- a/include/fstream.h
+++ b/include/fstream.h
@@ -68,8 +68,10 @@ enum {
FSTREAM_COMPRESSOR_ZSTD = 3,
+ FSTREAM_COMPRESSOR_BZIP2 = 4,
+
FSTREAM_COMPRESSOR_MIN = 1,
- FSTREAM_COMPRESSOR_MAX = 3,
+ FSTREAM_COMPRESSOR_MAX = 4,
};
#ifdef __cplusplus
diff --git a/lib/fstream/Makemodule.am b/lib/fstream/Makemodule.am
index 8a1254c..1834cb8 100644
--- a/lib/fstream/Makemodule.am
+++ b/lib/fstream/Makemodule.am
@@ -35,4 +35,10 @@ libfstream_a_SOURCES += lib/fstream/uncompress/zstd.c
libfstream_a_CPPFLAGS += -DWITH_ZSTD
endif
+if WITH_BZIP2
+libfstream_a_SOURCES += lib/fstream/compress/bzip2.c
+libfstream_a_SOURCES += lib/fstream/uncompress/bzip2.c
+libfstream_a_CPPFLAGS += -DWITH_BZIP2
+endif
+
noinst_LIBRARIES += libfstream.a
diff --git a/lib/fstream/compress/bzip2.c b/lib/fstream/compress/bzip2.c
new file mode 100644
index 0000000..3ca425a
--- /dev/null
+++ b/lib/fstream/compress/bzip2.c
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * bzip2.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "../internal.h"
+
+#include <bzlib.h>
+
+typedef struct {
+ ostream_comp_t base;
+
+ bz_stream strm;
+} ostream_bzip2_t;
+
+static int flush_inbuf(ostream_comp_t *base, bool finish)
+{
+ ostream_bzip2_t *bzip2 = (ostream_bzip2_t *)base;
+ size_t have;
+ int ret;
+
+ bzip2->strm.next_in = (char *)base->inbuf;
+ bzip2->strm.avail_in = base->inbuf_used;
+
+ for (;;) {
+ bzip2->strm.next_out = (char *)base->outbuf;
+ bzip2->strm.avail_out = sizeof(base->outbuf);
+
+ ret = BZ2_bzCompress(&bzip2->strm, finish ? BZ_FINISH : BZ_RUN);
+
+ if (ret < 0 && ret != BZ_OUTBUFF_FULL) {
+ fprintf(stderr, "%s: internal error in bzip2 "
+ "compressor.\n",
+ base->wrapped->get_filename(base->wrapped));
+ return -1;
+ }
+
+ have = sizeof(base->outbuf) - bzip2->strm.avail_out;
+
+ if (base->wrapped->append(base->wrapped, base->outbuf, have))
+ return -1;
+
+ if (ret == BZ_STREAM_END || ret == BZ_OUTBUFF_FULL ||
+ bzip2->strm.avail_in == 0) {
+ break;
+ }
+ }
+
+ if (bzip2->strm.avail_in > 0) {
+ memmove(base->inbuf, bzip2->strm.next_in,
+ bzip2->strm.avail_in);
+ }
+
+ base->inbuf_used = bzip2->strm.avail_in;
+ return 0;
+}
+
+static void cleanup(ostream_comp_t *base)
+{
+ ostream_bzip2_t *bzip2 = (ostream_bzip2_t *)base;
+
+ BZ2_bzCompressEnd(&bzip2->strm);
+}
+
+ostream_comp_t *ostream_bzip2_create(const char *filename)
+{
+ ostream_bzip2_t *bzip2 = calloc(1, sizeof(*bzip2));
+ ostream_comp_t *base = (ostream_comp_t *)bzip2;
+
+ if (bzip2 == NULL) {
+ fprintf(stderr, "%s: creating bzip2 compressor: %s.\n",
+ filename, strerror(errno));
+ return NULL;
+ }
+
+ if (BZ2_bzCompressInit(&bzip2->strm, 9, 0, 30) != BZ_OK) {
+ fprintf(stderr, "%s: error initializing bzip2 compressor.\n",
+ filename);
+ free(bzip2);
+ return NULL;
+ }
+
+ base->flush_inbuf = flush_inbuf;
+ base->cleanup = cleanup;
+ return base;
+}
diff --git a/lib/fstream/compress/ostream_compressor.c b/lib/fstream/compress/ostream_compressor.c
index d1d55e1..7ea7919 100644
--- a/lib/fstream/compress/ostream_compressor.c
+++ b/lib/fstream/compress/ostream_compressor.c
@@ -82,6 +82,11 @@ ostream_t *ostream_compressor_create(ostream_t *strm, int comp_id)
comp = ostream_zstd_create(strm->get_filename(strm));
#endif
break;
+ case FSTREAM_COMPRESSOR_BZIP2:
+#ifdef WITH_BZIP2
+ comp = ostream_bzip2_create(strm->get_filename(strm));
+#endif
+ break;
default:
break;
}
diff --git a/lib/fstream/compressor.c b/lib/fstream/compressor.c
index 84a859c..903a5f7 100644
--- a/lib/fstream/compressor.c
+++ b/lib/fstream/compressor.c
@@ -17,6 +17,9 @@ int fstream_compressor_id_from_name(const char *name)
if (strcmp(name, "zstd") == 0)
return FSTREAM_COMPRESSOR_ZSTD;
+ if (strcmp(name, "bzip2") == 0)
+ return FSTREAM_COMPRESSOR_BZIP2;
+
return -1;
}
@@ -31,6 +34,9 @@ const char *fstream_compressor_name_from_id(int id)
if (id == FSTREAM_COMPRESSOR_ZSTD)
return "zstd";
+ if (id == FSTREAM_COMPRESSOR_BZIP2)
+ return "bzip2";
+
return NULL;
}
@@ -49,6 +55,10 @@ bool fstream_compressor_exists(int id)
case FSTREAM_COMPRESSOR_ZSTD:
return true;
#endif
+#ifdef WITH_BZIP2
+ case FSTREAM_COMPRESSOR_BZIP2:
+ return true;
+#endif
default:
break;
}
diff --git a/lib/fstream/internal.h b/lib/fstream/internal.h
index 83ecc64..2dc81e4 100644
--- a/lib/fstream/internal.h
+++ b/lib/fstream/internal.h
@@ -59,12 +59,16 @@ SQFS_INTERNAL ostream_comp_t *ostream_xz_create(const char *filename);
SQFS_INTERNAL ostream_comp_t *ostream_zstd_create(const char *filename);
+SQFS_INTERNAL ostream_comp_t *ostream_bzip2_create(const char *filename);
+
SQFS_INTERNAL istream_comp_t *istream_gzip_create(const char *filename);
SQFS_INTERNAL istream_comp_t *istream_xz_create(const char *filename);
SQFS_INTERNAL istream_comp_t *istream_zstd_create(const char *filename);
+SQFS_INTERNAL istream_comp_t *istream_bzip2_create(const char *filename);
+
#ifdef __cplusplus
}
#endif
diff --git a/lib/fstream/uncompress/autodetect.c b/lib/fstream/uncompress/autodetect.c
index b788518..61628f8 100644
--- a/lib/fstream/uncompress/autodetect.c
+++ b/lib/fstream/uncompress/autodetect.c
@@ -14,6 +14,7 @@ static const struct {
{ FSTREAM_COMPRESSOR_GZIP, (const sqfs_u8 *)"\x1F\x8B\x08", 3 },
{ FSTREAM_COMPRESSOR_XZ, (const sqfs_u8 *)("\xFD" "7zXZ"), 6 },
{ FSTREAM_COMPRESSOR_ZSTD, (const sqfs_u8 *)"\x28\xB5\x2F\xFD", 4 },
+ { FSTREAM_COMPRESSOR_BZIP2, (const sqfs_u8 *)"BZh", 3 },
};
int istream_detect_compressor(istream_t *strm,
diff --git a/lib/fstream/uncompress/bzip2.c b/lib/fstream/uncompress/bzip2.c
new file mode 100644
index 0000000..b5fae5c
--- /dev/null
+++ b/lib/fstream/uncompress/bzip2.c
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * bzip2.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "../internal.h"
+
+#include <bzlib.h>
+
+typedef struct {
+ istream_comp_t base;
+
+ bz_stream strm;
+} istream_bzip2_t;
+
+static int precache(istream_t *base)
+{
+ istream_bzip2_t *bzip2 = (istream_bzip2_t *)base;
+ istream_t *wrapped = ((istream_comp_t *)base)->wrapped;
+ int ret;
+
+ for (;;) {
+ ret = istream_precache(wrapped);
+ if (ret != 0)
+ return ret;
+
+ bzip2->strm.next_in = (char *)wrapped->buffer;
+ bzip2->strm.avail_in = wrapped->buffer_used;
+
+ bzip2->strm.next_out = (char *)base->buffer + base->buffer_used;
+ bzip2->strm.avail_out = BUFSZ - base->buffer_used;
+
+ if (bzip2->strm.avail_out < 1)
+ break;
+
+ ret = BZ2_bzDecompress(&bzip2->strm);
+
+ if (ret < 0) {
+ fprintf(stderr, "%s: internal error in bzip2 "
+ "decompressor.\n",
+ wrapped->get_filename(wrapped));
+ return -1;
+ }
+
+ base->buffer_used = BUFSZ - bzip2->strm.avail_out;
+ wrapped->buffer_offset = wrapped->buffer_used -
+ bzip2->strm.avail_in;
+
+ if (ret == BZ_STREAM_END) {
+ base->eof = true;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static void cleanup(istream_comp_t *base)
+{
+ istream_bzip2_t *bzip2 = (istream_bzip2_t *)base;
+
+ BZ2_bzDecompressEnd(&bzip2->strm);
+}
+
+istream_comp_t *istream_bzip2_create(const char *filename)
+{
+ istream_bzip2_t *bzip2 = calloc(1, sizeof(*bzip2));
+ istream_comp_t *base = (istream_comp_t *)bzip2;
+
+ if (bzip2 == NULL) {
+ fprintf(stderr, "%s: creating bzip2 compressor: %s.\n",
+ filename, strerror(errno));
+ return NULL;
+ }
+
+ if (BZ2_bzDecompressInit(&bzip2->strm, 0, 0) != BZ_OK) {
+ fprintf(stderr, "%s: error initializing bzip2 decompressor.\n",
+ filename);
+ free(bzip2);
+ return NULL;
+ }
+
+ ((istream_t *)base)->precache = precache;
+ base->cleanup = cleanup;
+ return base;
+}
diff --git a/lib/fstream/uncompress/istream_compressor.c b/lib/fstream/uncompress/istream_compressor.c
index 2262c9b..bc8ef39 100644
--- a/lib/fstream/uncompress/istream_compressor.c
+++ b/lib/fstream/uncompress/istream_compressor.c
@@ -44,6 +44,11 @@ istream_t *istream_compressor_create(istream_t *strm, int comp_id)
comp = istream_zstd_create(strm->get_filename(strm));
#endif
break;
+ case FSTREAM_COMPRESSOR_BZIP2:
+#ifdef WITH_BZIP2
+ comp = istream_bzip2_create(strm->get_filename(strm));
+#endif
+ break;
default:
break;
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-11-04 02:53:32 +0000