mirror of
https://github.com/upx/upx
synced 2025-09-28 19:06:07 +08:00
Removed traces of the old prototype vmlinux stuff.
committer: mfx <mfx> 976719035 +0000
This commit is contained in:
Markus F.X.J. Oberhumer
parent
42d29038ca
commit
d465077f13
31
src/p_unix.h
31
src/p_unix.h
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@ -156,37 +156,6 @@ protected:
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};
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/*************************************************************************
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// bvmlinux/i386 (Linux kernel image)
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// vmlinux/i386 (Linux kernel image)
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**************************************************************************/
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class PackBvmlinuxI386 : public Packer
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{
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typedef Packer super;
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public:
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PackBvmlinuxI386(InputFile *f);
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virtual int getVersion() const { return 11; }
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virtual int getFormat() const { return UPX_F_BVMLINUX_i386; }
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virtual const char *getName() const { return "bvmlinux/386"; }
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virtual int getCompressionMethod() const;
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virtual const int *getFilters() const { return NULL; }
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virtual void pack(OutputFile *fo);
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virtual void unpack(OutputFile *fo);
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virtual bool canPack();
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virtual int canUnpack();
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protected:
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// virtual const upx_byte *getLoader() const;
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// virtual int getLoaderSize() const;
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unsigned elf_offset;
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};
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/*************************************************************************
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// solaris/sparc
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**************************************************************************/
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@ -1,155 +0,0 @@
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/* p_vmlinux.cpp --
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This file is part of the UPX executable compressor.
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Copyright (C) 1996-2000 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 1996-2000 Laszlo Molnar
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All Rights Reserved.
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UPX and the UCL library are free software; you can redistribute them
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and/or modify them under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING.
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If not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Markus F.X.J. Oberhumer Laszlo Molnar
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markus.oberhumer@jk.uni-linz.ac.at ml1050@cdata.tvnet.hu
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*/
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#include "conf.h"
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#include "file.h"
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#include "packer.h"
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#include "p_unix.h"
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#include "p_elf.h"
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#include <zlib.h>
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/*************************************************************************
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//
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**************************************************************************/
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PackBvmlinuxI386::PackBvmlinuxI386(InputFile *f) :
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super(f), elf_offset(0)
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{
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}
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int PackBvmlinuxI386::getCompressionMethod() const
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{
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return M_NRV2D_LE32;
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}
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bool PackBvmlinuxI386::canPack()
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{
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Elf_LE32_Ehdr ehdr;
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Elf_LE32_Phdr text;
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Elf_LE32_Phdr data;
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unsigned char *buf = ehdr.e_ident;
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fi->seek(elf_offset, SEEK_SET);
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fi->readx(&ehdr, sizeof(ehdr));
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fi->readx(&text, sizeof(text));
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fi->readx(&data, sizeof(data));
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// check the ELF header
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if (memcmp(buf, "\x7f\x45\x4c\x46\x01\x01\x01", 7)) // ELF 32-bit LSB
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return false;
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if (!memcmp(buf+8, "FreeBSD", 7)) // branded
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return false;
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if (ehdr.e_type != 2) // executable
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return false;
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if (ehdr.e_machine != 3 && ehdr.e_machine != 6) // Intel 80[34]86
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return false;
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if (ehdr.e_version != 1) // version
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return false;
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// now check for bvmlinux
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if (ehdr.e_phoff != 52 || ehdr.e_ehsize != 52 || ehdr.e_phentsize != 32)
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return false;
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if (ehdr.e_entry != 0x100000 || ehdr.e_phnum != 2)
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return false;
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// check for bvmlinux - text segment
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if (text.p_type != 1 || text.p_offset != 0x1000)
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return false;
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if (text.p_vaddr != 0x100000 || text.p_paddr != 0x100000)
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return false;
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if (text.p_flags != 5)
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return false;
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// check for bvmlinux - data segment
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if (data.p_type != 1)
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return false;
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if (data.p_filesz < 200000)
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return false;
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if (data.p_flags != 6)
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return false;
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// check gzip data
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unsigned char magic[2];
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LE32 uncompressed_size;
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off_t gzip_offset = elf_offset + data.p_offset + 472;
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fi->seek(gzip_offset, SEEK_SET);
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fi->readx(magic, 2);
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if (memcmp(magic, "\037\213", 2))
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return false;
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fi->seek(data.p_filesz - 2 - 4 - 472, SEEK_CUR);
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fi->readx(&uncompressed_size, 4);
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if (uncompressed_size < data.p_filesz || uncompressed_size > 4*1024*1024)
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return false;
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// uncompress kernel with zlib
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fi->seek(gzip_offset, SEEK_SET);
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gzFile f = gzdopen(fi->getFd(), "r");
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if (f == NULL)
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return false;
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ibuf.alloc(uncompressed_size);
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unsigned ilen = gzread(f, ibuf, uncompressed_size);
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bool ok = ilen == uncompressed_size;
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gzclose(f);
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printf("decompressed kernel: %d -> %d\n", (int)data.p_filesz, ilen);
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return ok;
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}
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/*************************************************************************
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//
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**************************************************************************/
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void PackBvmlinuxI386::pack(OutputFile *fo)
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{
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fo = fo;
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}
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/*************************************************************************
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//
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**************************************************************************/
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int PackBvmlinuxI386::canUnpack()
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{
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return false;
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}
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void PackBvmlinuxI386::unpack(OutputFile *fo)
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{
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fo = fo;
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}
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/*
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vi:ts=4:et
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*/
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@ -76,11 +76,12 @@ typedef unsigned upx_uint32;
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#define UPX_F_TMT_ADAM 8
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#define UPX_F_W32_PE 9
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#define UPX_F_LINUX_i386 10
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#define UPX_F_BVMLINUX_i386 11
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/* UNUSED */
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#define UPX_F_LINUX_ELF_i386 12
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#define UPX_F_LINUX_SEP_i386 13
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#define UPX_F_LINUX_SH_i386 14
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#define UPX_F_VMLINUZ_i386 15
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#define UPX_F_BVMLINUX_i386 16
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#define UPX_F_ATARI_TOS 129
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#define UPX_F_SOLARIS_SPARC 130
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