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Kernel: Add basic Credentials for the system

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Now filesystem access/open, etc confirm that you have access for rwxs
This commit is contained in:
Bananymous
2023-06-11 19:52:13 +03:00
parent 3181ea7b4d
commit c7ec19c25c
13 changed files with 168 additions and 54 deletions
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10
LibELF/LibELF/ELF.cpp
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@@ -21,12 +21,10 @@ namespace LibELF
{
#ifdef __is_kernel
BAN::ErrorOr<BAN::UniqPtr<ELF>> ELF::load_from_file(BAN::StringView file_path)
BAN::ErrorOr<BAN::UniqPtr<ELF>> ELF::load_from_file(BAN::RefPtr<Inode> inode)
{
auto file = TRY(VirtualFileSystem::get().file_from_absolute_path(file_path, true));
PageTable::current().lock();
size_t page_count = BAN::Math::div_round_up<size_t>(file.inode->size(), PAGE_SIZE);
size_t page_count = BAN::Math::div_round_up<size_t>(inode->size(), PAGE_SIZE);
vaddr_t vaddr = PageTable::current().get_free_contiguous_pages(page_count, (vaddr_t)g_kernel_end);
auto virtual_range = BAN::UniqPtr<VirtualRange>::adopt(
VirtualRange::create(
@@ -37,9 +35,9 @@ namespace LibELF
);
PageTable::current().unlock();
TRY(file.inode->read(0, (void*)vaddr, file.inode->size()));
TRY(inode->read(0, (void*)vaddr, inode->size()));
ELF* elf_ptr = new ELF(BAN::move(virtual_range), file.inode->size());
ELF* elf_ptr = new ELF(BAN::move(virtual_range), inode->size());
if (elf_ptr == nullptr)
return BAN::Error::from_errno(ENOMEM);

7
LibELF/include/LibELF/ELF.h
View File

@@ -1,6 +1,7 @@
#pragma once
#ifdef __is_kernel
#include <kernel/FS/Inode.h>
#include <kernel/Memory/VirtualRange.h>
#endif
@@ -16,8 +17,12 @@ namespace LibELF
class ELF
{
public:
#ifdef __is_kernel
static BAN::ErrorOr<BAN::UniqPtr<ELF>> load_from_file(BAN::RefPtr<Kernel::Inode>);
#else
static BAN::ErrorOr<BAN::UniqPtr<ELF>> load_from_file(BAN::StringView);
#endif
const Elf64FileHeader& file_header64() const;
const Elf64ProgramHeader& program_header64(size_t) const;
const Elf64SectionHeader& section_header64(size_t) const;