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tools/squashfs4: add new tool for squashfs4 images

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squashfs tool is finally reborn and correctly maintained.

Introduce the new version as a replacement for squasfs4kit as it was a
fork and also abandoned.

Add additional patch to add the missing feature present in squashfskit4
but still missing on this new project.

Backport each required patch that fix compilation error on macos.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
This commit is contained in:
Christian Marangi 2023-02-06 23:22:43 +01:00
parent 57db2280a2
commit 30f2d516ba
No known key found for this signature in database
GPG Key ID: AC001D09ADBFEAD7
11 changed files with 713 additions and 3 deletions
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6
tools/Makefile
View File

@ -59,7 +59,7 @@ tools-y += patch-image
tools-y += patchelf
tools-y += pkgconf
tools-y += quilt
tools-y += squashfskit4
tools-y += squashfs4
tools-y += sstrip
tools-y += zip
tools-y += zlib
@ -117,11 +117,11 @@ $(curdir)/pkgconf/compile := $(curdir)/meson/compile
$(curdir)/quilt/compile := $(curdir)/autoconf/compile $(curdir)/findutils/compile
$(curdir)/sdcc/compile := $(curdir)/bison/compile
$(curdir)/squashfs3-lzma/compile := $(curdir)/lzma-old/compile
$(curdir)/squashfskit4/compile := $(curdir)/xz/compile $(curdir)/zlib/compile
$(curdir)/squashfs4/compile := $(curdir)/xz/compile $(curdir)/zlib/compile
$(curdir)/zstd/compile := $(curdir)/meson/compile
ifneq ($(HOST_OS),Linux)
$(curdir)/squashfskit4/compile += $(curdir)/coreutils/compile
$(curdir)/squashfs4/compile += $(curdir)/coreutils/compile
tools-y += coreutils
endif
ifeq ($(HOST_OS),Darwin)

41
tools/squashfs4/Makefile Normal file
View File

@ -0,0 +1,41 @@
#
# Copyright (C) 2006-2012 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=squashfs4
PKG_CPE_ID:=cpe:/a:phillip_lougher:squashfs
PKG_VERSION:=4.5.1
PKG_RELEASE=1
PKG_SOURCE_PROTO:=git
PKG_SOURCE_URL:=https://github.com/plougher/squashfs-tools
PKG_SOURCE_DATE:=2022-03-17
PKG_SOURCE_VERSION:=afdd63fc386919b4aa40d573b0a6069414d14317
PKG_MIRROR_HASH:=caedb66cf6dcbdcee0d1525923e203d003ef15f34a13a328686794666f16171f
include $(INCLUDE_DIR)/host-build.mk
define Host/Compile
+$(HOST_MAKE_VARS) \
$(MAKE) -C $(HOST_BUILD_DIR)/squashfs-tools \
XZ_SUPPORT=1 \
LZMA_XZ_SUPPORT=1 \
EXTRA_CFLAGS="-I$(STAGING_DIR_HOST)/include" \
mksquashfs unsquashfs
endef
define Host/Install
$(INSTALL_BIN) $(HOST_BUILD_DIR)/squashfs-tools/mksquashfs $(STAGING_DIR_HOST)/bin/mksquashfs4
$(INSTALL_BIN) $(HOST_BUILD_DIR)/squashfs-tools/unsquashfs $(STAGING_DIR_HOST)/bin/unsquashfs4
endef
define Host/Clean
rm -f $(STAGING_DIR_HOST)/bin/mksquashfs4
rm -f $(STAGING_DIR_HOST)/bin/unsquashfs4
endef
$(eval $(call HostBuild))

39
tools/squashfs4/patches/001-Unsquashfs-Add-and-make-some-header-includes-conditi.patch Normal file
View File

@ -0,0 +1,39 @@
From a9119c969af0a5aa961d56978d5dd4f3eb952667 Mon Sep 17 00:00:00 2001
From: Phillip Lougher <phillip@squashfs.org.uk>
Date: Mon, 15 Aug 2022 17:04:43 +0100
Subject: [PATCH 1/1] Unsquashfs: Add and make some header includes conditional
Fixes https://github.com/plougher/squashfs-tools/issues/122
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
---
squashfs-tools/reader.c | 1 +
squashfs-tools/unsquashfs.c | 5 +++++
2 files changed, 6 insertions(+)
--- a/squashfs-tools/reader.c
+++ b/squashfs-tools/reader.c
@@ -38,6 +38,7 @@
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
+#include <signal.h>
#include "squashfs_fs.h"
#include "mksquashfs.h"
#include "caches-queues-lists.h"
--- a/squashfs-tools/unsquashfs.c
+++ b/squashfs-tools/unsquashfs.c
@@ -32,8 +32,13 @@
#include "stdarg.h"
#include "fnmatch_compat.h"
+#ifdef __linux__
#include <sys/sysinfo.h>
#include <sys/sysmacros.h>
+#elif defined __FreeBSD__
+#include <sys/sysctl.h>
+#endif
+
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>

30
tools/squashfs4/patches/002-Mksquashfs-Make-sysinfo-conditional.patch Normal file
View File

@ -0,0 +1,30 @@
From 374e39a786a5acda841056bec26fd0e0c4d40dac Mon Sep 17 00:00:00 2001
From: Phillip Lougher <phillip@squashfs.org.uk>
Date: Mon, 15 Aug 2022 17:09:05 +0100
Subject: [PATCH 1/1] Mksquashfs: Make sysinfo() conditional
Fixes https://github.com/plougher/squashfs-tools/issues/123
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
---
squashfs-tools/mksquashfs.c | 2 ++
1 file changed, 2 insertions(+)
--- a/squashfs-tools/mksquashfs.c
+++ b/squashfs-tools/mksquashfs.c
@@ -5802,6 +5802,7 @@ static int get_physical_memory()
long long page_size = sysconf(_SC_PAGESIZE);
int phys_mem;
+#ifdef __linux__
if(num_pages == -1 || page_size == -1) {
struct sysinfo sys;
int res = sysinfo(&sys);
@@ -5812,6 +5813,7 @@ static int get_physical_memory()
num_pages = sys.totalram;
page_size = sys.mem_unit;
}
+#endif
phys_mem = num_pages * page_size >> 20;

92
tools/squashfs4/patches/003-Only-use-available-CPUs.patch Normal file
View File

@ -0,0 +1,92 @@
From bc8e655a420d2f62bb0597947e96dce7b4d3fb36 Mon Sep 17 00:00:00 2001
From: Wessel Dankers <wsl@fruit.je>
Date: Sun, 30 Oct 2022 19:29:28 +0100
Subject: [PATCH] Only use available CPUs
Not all online CPUs may be available for the current process,
especially when CPU affinity is involved. In such cases too many
threads will be created, which will then compete unnecessarily
for CPU time.
Use sched_getaffinity() to determine the correct number of threads
to create.
---
squashfs-tools/mksquashfs.c | 16 ++++++++++++----
squashfs-tools/unsquashfs.c | 13 ++++++++++---
2 files changed, 22 insertions(+), 7 deletions(-)
--- a/squashfs-tools/mksquashfs.c
+++ b/squashfs-tools/mksquashfs.c
@@ -52,7 +52,9 @@
#include <ctype.h>
#include <sys/sysinfo.h>
-#ifndef linux
+#ifdef linux
+#include <sched.h>
+#else
#include <sys/sysctl.h>
#endif
@@ -5079,7 +5081,15 @@ static void initialise_threads(int readq
BAD_ERROR("Failed to set signal mask in intialise_threads\n");
if(processors == -1) {
-#ifndef linux
+#ifdef linux
+ cpu_set_t cpu_set;
+ CPU_ZERO(&cpu_set);
+
+ if(sched_getaffinity(0, sizeof cpu_set, &cpu_set) == -1)
+ processors = sysconf(_SC_NPROCESSORS_ONLN);
+ else
+ processors = CPU_COUNT(&cpu_set);
+#else
int mib[2];
size_t len = sizeof(processors);
@@ -5096,8 +5106,6 @@ static void initialise_threads(int readq
ERROR_EXIT(" Defaulting to 1\n");
processors = 1;
}
-#else
- processors = sysconf(_SC_NPROCESSORS_ONLN);
#endif
}
--- a/squashfs-tools/unsquashfs.c
+++ b/squashfs-tools/unsquashfs.c
@@ -33,6 +33,7 @@
#include "fnmatch_compat.h"
#ifdef __linux__
+#include <sched.h>
#include <sys/sysinfo.h>
#include <sys/sysmacros.h>
#elif defined __FreeBSD__
@@ -2719,7 +2720,15 @@ void initialise_threads(int fragment_buf
}
if(processors == -1) {
-#ifndef linux
+#ifdef linux
+ cpu_set_t cpu_set;
+ CPU_ZERO(&cpu_set);
+
+ if(sched_getaffinity(0, sizeof cpu_set, &cpu_set) == -1)
+ processors = sysconf(_SC_NPROCESSORS_ONLN);
+ else
+ processors = CPU_COUNT(&cpu_set);
+#else
int mib[2];
size_t len = sizeof(processors);
@@ -2735,8 +2744,6 @@ void initialise_threads(int fragment_buf
"Defaulting to 1\n");
processors = 1;
}
-#else
- processors = sysconf(_SC_NPROCESSORS_ONLN);
#endif
}

37
tools/squashfs4/patches/004-action-rework-strdupa-with-POSIX-strdup-and-free.patch Normal file
View File

@ -0,0 +1,37 @@
From 92e628ec0e26cf091d82356e3b74f73bedf4cfc8 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Sat, 15 Oct 2022 00:11:20 +0200
Subject: [PATCH] action: rework strdupa with POSIX strdup and free
strdupa is not POSIX and cause compilation error on macos.
Fix this by using strdup and free.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
---
squashfs-tools/action.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
--- a/squashfs-tools/action.c
+++ b/squashfs-tools/action.c
@@ -2415,9 +2415,17 @@ static char *get_start(char *s, int n)
static int subpathname_fn(struct atom *atom, struct action_data *action_data)
{
- return fnmatch(atom->argv[0], get_start(strdupa(action_data->subpath),
- count_components(atom->argv[0])),
- FNM_PATHNAME|FNM_EXTMATCH) == 0;
+ char *s, *tmp;
+ int ret;
+
+ s = tmp = strdup(action_data->subpath);
+ tmp = get_start(tmp, count_components(atom->argv[0]));
+
+ ret = fnmatch(atom->argv[0], tmp, FNM_PATHNAME|FNM_EXTMATCH);
+
+ free(s);
+
+ return ret == 0;
}
/*

192
tools/squashfs4/patches/005-Don-t-use-sigwaitinfo-sigtimedwait-if-not-supported.patch Normal file
View File

@ -0,0 +1,192 @@
From dbe9747b4f09bd2f4d63af06e55c2c3ed35bfca1 Mon Sep 17 00:00:00 2001
From: Phillip Lougher <phillip@squashfs.org.uk>
Date: Tue, 7 Feb 2023 23:09:30 +0000
Subject: [PATCH] Don't use sigwaitinfo()/sigtimedwait() if not supported
If sigwaitinfo() and sigtimedwait() are not supported,
use sigwait() instead.
This will disable the queue/caches dump if ^\ (SIGQUIT)
is hit twice within a second.
But the queue/caches dump is still available if SIGHUP
is sent to the program.
Currently this check is applied to MAC OS X. FreeBSD and
NetBSD appear to have these functions.
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
---
squashfs-tools/info.c | 25 ++-------------
squashfs-tools/signals.h | 54 ++++++++++++++++++++++++++++++++
squashfs-tools/unsquashfs_info.c | 25 ++-------------
3 files changed, 60 insertions(+), 44 deletions(-)
create mode 100644 squashfs-tools/signals.h
--- a/squashfs-tools/info.c
+++ b/squashfs-tools/info.c
@@ -2,7 +2,7 @@
* Create a squashfs filesystem. This is a highly compressed read only
* filesystem.
*
- * Copyright (c) 2013, 2014, 2019, 2021
+ * Copyright (c) 2013, 2014, 2019, 2021, 2022, 2023
* Phillip Lougher <phillip@squashfs.org.uk>
*
* This program is free software; you can redistribute it and/or
@@ -42,6 +42,7 @@
#include "mksquashfs_error.h"
#include "progressbar.h"
#include "caches-queues-lists.h"
+#include "signals.h"
static int silent = 0;
static struct dir_ent *ent = NULL;
@@ -144,7 +145,6 @@ void dump_state()
void *info_thrd(void *arg)
{
sigset_t sigmask;
- struct timespec timespec = { .tv_sec = 1, .tv_nsec = 0 };
int sig, waiting = 0;
sigemptyset(&sigmask);
@@ -152,26 +152,7 @@ void *info_thrd(void *arg)
sigaddset(&sigmask, SIGHUP);
while(1) {
- if(waiting)
- sig = sigtimedwait(&sigmask, NULL, &timespec);
- else
- sig = sigwaitinfo(&sigmask, NULL);
-
- if(sig == -1) {
- switch(errno) {
- case EAGAIN:
- /* interval timed out */
- waiting = 0;
- /* FALLTHROUGH */
- case EINTR:
- /* if waiting, the wait will be longer, but
- that's OK */
- continue;
- default:
- BAD_ERROR("sigtimedwait/sigwaitinfo failed "
- "because %s\n", strerror(errno));
- }
- }
+ sig = wait_for_signal(&sigmask, &waiting);
if(sig == SIGQUIT && !waiting) {
print_filename();
--- /dev/null
+++ b/squashfs-tools/signals.h
@@ -0,0 +1,54 @@
+#ifndef SIGNALS_H
+#define SIGNALS_H
+/*
+ * Create a squashfs filesystem. This is a highly compressed read only
+ * filesystem.
+ *
+ * Copyright (c) 2023
+ * Phillip Lougher <phillip@squashfs.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * signals.h
+ */
+
+static inline int wait_for_signal(sigset_t *sigmask, int *waiting)
+{
+ int sig;
+
+#if defined(__APPLE__) && defined(__MACH__)
+ sigwait(sigmask, &sig);
+ *waiting = 0;
+#else
+ struct timespec timespec = { .tv_sec = 1, .tv_nsec = 0 };
+
+ while(1) {
+ if(*waiting)
+ sig = sigtimedwait(sigmask, NULL, &timespec);
+ else
+ sig = sigwaitinfo(sigmask, NULL);
+
+ if(sig != -1)
+ break;
+
+ if(errno == EAGAIN)
+ *waiting = 0;
+ else if(errno != EINTR)
+ BAD_ERROR("sigtimedwait/sigwaitinfo failed because %s\n", strerror(errno));
+ }
+#endif
+ return sig;
+}
+#endif
--- a/squashfs-tools/unsquashfs_info.c
+++ b/squashfs-tools/unsquashfs_info.c
@@ -2,7 +2,7 @@
* Create a squashfs filesystem. This is a highly compressed read only
* filesystem.
*
- * Copyright (c) 2013, 2021
+ * Copyright (c) 2013, 2021, 2023
* Phillip Lougher <phillip@squashfs.org.uk>
*
* This program is free software; you can redistribute it and/or
@@ -40,6 +40,7 @@
#include "squashfs_fs.h"
#include "unsquashfs.h"
#include "unsquashfs_error.h"
+#include "signals.h"
char *pathname = NULL;
@@ -96,7 +97,6 @@ void dump_state()
void *info_thrd(void *arg)
{
sigset_t sigmask;
- struct timespec timespec = { .tv_sec = 1, .tv_nsec = 0 };
int sig, waiting = 0;
sigemptyset(&sigmask);
@@ -104,26 +104,7 @@ void *info_thrd(void *arg)
sigaddset(&sigmask, SIGHUP);
while(1) {
- if(waiting)
- sig = sigtimedwait(&sigmask, NULL, &timespec);
- else
- sig = sigwaitinfo(&sigmask, NULL);
-
- if(sig == -1) {
- switch(errno) {
- case EAGAIN:
- /* interval timed out */
- waiting = 0;
- /* FALLTHROUGH */
- case EINTR:
- /* if waiting, the wait will be longer, but
- that's OK */
- continue;
- default:
- BAD_ERROR("sigtimedwait/sigwaitinfo failed "
- "because %s\n", strerror(errno));
- }
- }
+ sig = wait_for_signal(&sigmask, &waiting);
if(sig == SIGQUIT && !waiting) {
if(pathname)

49
tools/squashfs4/patches/006-Move-sysinfo.h-into-the-linux-only-section-should-fi.patch Normal file
View File

@ -0,0 +1,49 @@
From b2f6454a2b2517cfba7a24cf02e9bdf3b959c86a Mon Sep 17 00:00:00 2001
From: Tony Butler <spudz76@gmail.com>
Date: Sat, 18 Feb 2023 13:20:48 -0800
Subject: [PATCH] Move sysinfo.h into the linux-only section, should fix build
on MacOS.
All compilers set `__linux__`, but `linux` may not be defined, and usage
was mixed. Use `__linux__` everywhere instead.
Signed-off-by: Tony Butler <spudz76@gmail.com>
---
squashfs-tools/mksquashfs.c | 6 +++---
squashfs-tools/unsquashfs.c | 2 +-
2 files changed, 4 insertions(+), 4 deletions(-)
--- a/squashfs-tools/mksquashfs.c
+++ b/squashfs-tools/mksquashfs.c
@@ -50,9 +50,9 @@
#include <sys/wait.h>
#include <limits.h>
#include <ctype.h>
-#include <sys/sysinfo.h>
-#ifdef linux
+#ifdef __linux__
+#include <sys/sysinfo.h>
#include <sched.h>
#else
#include <sys/sysctl.h>
@@ -5081,7 +5081,7 @@ static void initialise_threads(int readq
BAD_ERROR("Failed to set signal mask in intialise_threads\n");
if(processors == -1) {
-#ifdef linux
+#ifdef __linux__
cpu_set_t cpu_set;
CPU_ZERO(&cpu_set);
--- a/squashfs-tools/unsquashfs.c
+++ b/squashfs-tools/unsquashfs.c
@@ -2720,7 +2720,7 @@ void initialise_threads(int fragment_buf
}
if(processors == -1) {
-#ifdef linux
+#ifdef __linux__
cpu_set_t cpu_set;
CPU_ZERO(&cpu_set);

26
tools/squashfs4/patches/007-Unsquashfs-fix-compilation-error-for-missing-sysctl..patch Normal file
View File

@ -0,0 +1,26 @@
From dcf492077ef10ed7550b6e2b38b81318645bbdd5 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Sun, 19 Feb 2023 04:36:01 +0100
Subject: [PATCH] Unsquashfs: fix compilation error for missing sysctl.h on
macos
Currently the include of sys/sysctl.h is guarded and done only for
FreeBSD system. Remove this to fix compilation error on macos following
the same pattern done in mksquashfs.c
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
squashfs-tools/unsquashfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/squashfs-tools/unsquashfs.c
+++ b/squashfs-tools/unsquashfs.c
@@ -36,7 +36,7 @@
#include <sched.h>
#include <sys/sysinfo.h>
#include <sys/sysmacros.h>
-#elif defined __FreeBSD__
+#else
#include <sys/sysctl.h>
#endif

37
tools/squashfs4/patches/100-portability.patch Normal file
View File

@ -0,0 +1,37 @@
--- a/squashfs-tools/xattr.c
+++ b/squashfs-tools/xattr.c
@@ -115,6 +115,7 @@ int xattr_get_prefix(struct xattr_list *
static int read_xattrs_from_system(char *filename, struct xattr_list **xattrs)
{
+#if defined(linux)
ssize_t size, vsize;
char *xattr_names, *p;
int i;
@@ -227,6 +228,10 @@ failed:
free(xattr_list);
free(xattr_names);
return 0;
+#else
+ *xattrs = NULL;
+ return 0;
+#endif
}
--- a/squashfs-tools/unsquashfs_xattr.c
+++ b/squashfs-tools/unsquashfs_xattr.c
@@ -36,6 +36,7 @@ extern int strict_errors;
int write_xattr(char *pathname, unsigned int xattr)
{
+#if defined(linux)
unsigned int count;
struct xattr_list *xattr_list;
int i;
@@ -147,4 +148,5 @@ int write_xattr(char *pathname, unsigned
free_xattr(xattr_list, count);
return !failed;
+#endif
}

167
tools/squashfs4/patches/101-xz_wrapper-support-multiple-lzma-configuration-optio.patch Normal file
View File

@ -0,0 +1,167 @@
From f49793cfbd72fdc40ab75dbffef42dca774701d1 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Fri, 14 Oct 2022 15:59:16 +0200
Subject: [PATCH] xz_wrapper: support multiple lzma configuration options
Add option to configure preset, lc, lp and pb lzma parameters.
-Xpreset can be both a level or set to 'extreme' to use the lzma extreme
compression options.
New option added:
-Xpreset
-Xlc
-Xlp
-Xpb
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
squashfs-tools/xz_wrapper.c | 112 +++++++++++++++++++++++++++++++++++-
1 file changed, 109 insertions(+), 3 deletions(-)
--- a/squashfs-tools/xz_wrapper.c
+++ b/squashfs-tools/xz_wrapper.c
@@ -44,7 +44,10 @@ static struct bcj bcj[] = {
static int filter_count = 1;
static int dictionary_size = 0;
static float dictionary_percent = 0;
-
+static int preset = LZMA_PRESET_DEFAULT;
+static int lc = -1;
+static int lp = -1;
+static int pb = -1;
/*
* This function is called by the options parsing code in mksquashfs.c
@@ -53,6 +56,11 @@ static float dictionary_percent = 0;
* Two specific options are supported:
* -Xbcj
* -Xdict-size
+ * -Xpreset
+ * -Xe
+ * -Xlc
+ * -Xlp
+ * -Xpb
*
* This function returns:
* >=0 (number of additional args parsed) on success
@@ -141,6 +149,85 @@ static int xz_options(char *argv[], int
}
return 1;
+ } else if(strcmp(argv[0], "-Xpreset") == 0) {
+ char *b;
+ long val;
+
+ if(argc < 2) {
+ fprintf(stderr, "xz: -Xpreset missing preset-level\n");
+ goto failed;
+ }
+
+ if (strcmp(argv[1], "extreme") == 0) {
+ preset = LZMA_PRESET_EXTREME;
+
+ return 1;
+ }
+
+ val = strtol(argv[1], &b, 10);
+ if ((int) val < 0 || (int) val & ~LZMA_PRESET_LEVEL_MASK) {
+ fprintf(stderr, "xz: -Xpreset can't be "
+ "negative or more than the max preset\n");
+ goto failed;
+ }
+
+ preset = (int) val;
+
+ return 1;
+ } else if(strcmp(argv[0], "-Xlc") == 0) {
+ char *b;
+ long val;
+
+ if(argc < 2) {
+ fprintf(stderr, "xz: -Xlc missing value\n");
+ goto failed;
+ }
+
+ val = strtol(argv[1], &b, 10);
+ if ((int) val < LZMA_LCLP_MIN || (int) val > LZMA_LCLP_MAX) {
+ fprintf(stderr, "xz: -Xlc invalid value\n");
+ goto failed;
+ }
+
+ lc = (int) val;
+
+ return 1;
+ } else if(strcmp(argv[0], "-Xlp") == 0) {
+ char *b;
+ long val;
+
+ if(argc < 2) {
+ fprintf(stderr, "xz: -Xlp missing value\n");
+ goto failed;
+ }
+
+ val = strtol(argv[1], &b, 10);
+ if ((int) val < LZMA_LCLP_MIN || (int) val > LZMA_LCLP_MAX) {
+ fprintf(stderr, "xz: -Xlc invalid value\n");
+ goto failed;
+ }
+
+ lp = (int) val;
+
+ return 1;
+ } else if(strcmp(argv[0], "-Xpb") == 0) {
+ char *b;
+ long val;
+
+ if(argc < 2) {
+ fprintf(stderr, "xz: -Xpb missing value\n");
+ goto failed;
+ }
+
+ val = strtol(argv[1], &b, 10);
+ if ((int) val < LZMA_PB_MIN || (int) val > LZMA_PB_MAX) {
+ fprintf(stderr, "xz: -Xlc invalid value\n");
+ goto failed;
+ }
+
+ pb = (int) val;
+
+ return 1;
}
return -1;
@@ -446,11 +533,20 @@ static int xz_compress(void *strm, void
for(i = 0; i < stream->filters; i++) {
struct filter *filter = &stream->filter[i];
- if(lzma_lzma_preset(&stream->opt, LZMA_PRESET_DEFAULT))
+ if(lzma_lzma_preset(&stream->opt, preset))
goto failed;
stream->opt.dict_size = stream->dictionary_size;
+ if (lc >= 0)
+ stream->opt.lc = lc;
+
+ if (lp >= 0)
+ stream->opt.lp = lp;
+
+ if (pb >= 0)
+ stream->opt.pb = pb;
+
filter->length = 0;
res = lzma_stream_buffer_encode(filter->filter,
LZMA_CHECK_CRC32, NULL, src, size, filter->buffer,
@@ -521,6 +617,12 @@ static void xz_usage(FILE *stream)
fprintf(stream, " header as either 2^n or as 2^n+2^(n+1).\n\t\t");
fprintf(stream, "Example dict-sizes are 75%%, 50%%, 37.5%%, 25%%, or");
fprintf(stream, " 32K, 16K, 8K\n\t\tetc.\n");
+ fprintf(stream, "\t -Xpreset <preset-level or extreme>\n");
+ fprintf(stream, "\t\tUse <preset-value> as the custom preset to use");
+ fprintf(stream, " on compress. Can be a level number or extreme.\n");
+ fprintf(stream, "\t -Xlc <value>\n");
+ fprintf(stream, "\t -Xlp <value>\n");
+ fprintf(stream, "\t -Xpb <value>\n");
}