mirror of
https://github.com/EnderIce2/Fennix.git
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EnderIce2
557c7e6235
This is the fourth time re-writing the VFS, hope this will be the last. Tried to make it as modular as possible so this won't be necessary in the future. 🙏
This change required the entire kernel code to be modified.
114 lines
2.7 KiB
C++
114 lines
2.7 KiB
C++
/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel 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 Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <exec.hpp>
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#include <msexec.h>
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#include <macho.h>
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#include <memory>
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#include "../kernel.h"
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namespace Execute
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{
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BinaryType GetBinaryType(Node &Node)
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{
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debug("Checking binary type of %s", Node->Path.c_str());
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BinaryType type;
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if (Node == nullptr)
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ReturnLogError((BinaryType)-ENOENT, "Node is null");
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Elf_Ehdr ehdr;
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fs->Read(Node, &ehdr, sizeof(Elf_Ehdr), 0);
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mach_header mach;
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fs->Read(Node, &mach, sizeof(mach_header), 0);
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IMAGE_DOS_HEADER mz;
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fs->Read(Node, &mz, sizeof(IMAGE_DOS_HEADER), 0);
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/* Check ELF header. */
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if (ehdr.e_ident[EI_MAG0] == ELFMAG0 &&
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ehdr.e_ident[EI_MAG1] == ELFMAG1 &&
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ehdr.e_ident[EI_MAG2] == ELFMAG2 &&
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ehdr.e_ident[EI_MAG3] == ELFMAG3)
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{
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debug("Image - ELF");
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type = BinaryType::BinTypeELF;
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goto Success;
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}
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if (mach.magic == MH_MAGIC || mach.magic == MH_CIGAM)
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{
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debug("Image - Mach-O");
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type = BinaryType::BinTypeMachO;
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goto Success;
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}
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/* Check MZ header. */
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else if (mz.e_magic == IMAGE_DOS_SIGNATURE)
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{
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IMAGE_NT_HEADERS pe;
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fs->Read(Node, &pe, sizeof(IMAGE_NT_HEADERS), mz.e_lfanew);
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IMAGE_OS2_HEADER ne;
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fs->Read(Node, &ne, sizeof(IMAGE_OS2_HEADER), mz.e_lfanew);
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/* TODO: LE, EDOS */
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if (pe.Signature == IMAGE_NT_SIGNATURE)
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{
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debug("Image - PE");
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type = BinaryType::BinTypePE;
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goto Success;
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}
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else if (ne.ne_magic == IMAGE_OS2_SIGNATURE)
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{
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debug("Image - NE");
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type = BinaryType::BinTypeNE;
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goto Success;
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}
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else
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{
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debug("Image - MZ");
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type = BinaryType::BinTypeMZ;
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goto Success;
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}
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}
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/* ... */
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type = BinaryType::BinTypeUnknown;
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Success:
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return type;
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}
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BinaryType GetBinaryType(std::string Path)
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{
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Node node = fs->Lookup(thisProcess->Info.RootNode, Path);
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if (node->IsSymbolicLink())
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{
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char buffer[512];
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fs->ReadLink(node, buffer, sizeof(buffer));
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node = fs->Lookup(node->Parent, buffer);
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}
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debug("Checking binary type of %s (returning %p)", Path.c_str(), node.get());
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assert(node != nullptr);
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return GetBinaryType(node);
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}
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}
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