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memset was clearing process data from memory

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Alex 2022-12-12 20:28:50 +02:00
parent 359612abb5
commit 58709c1310
Signed by untrusted user who does not match committer: enderice2
GPG Key ID: EACC3AD603BAB4DD
1 changed files with 2 additions and 1 deletions
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3
Execute/Spawn.cpp
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@ -155,6 +155,7 @@ namespace Execute
{ {
warn("TEXTREL ELF is not fully tested yet!"); warn("TEXTREL ELF is not fully tested yet!");
MemoryImage = (uint8_t *)KernelAllocator.RequestPages(TO_PAGES(ElfAppSize)); MemoryImage = (uint8_t *)KernelAllocator.RequestPages(TO_PAGES(ElfAppSize));
memset(MemoryImage, 0, ElfAppSize);
for (uint64_t i = 0; i < TO_PAGES(ElfAppSize); i++) for (uint64_t i = 0; i < TO_PAGES(ElfAppSize); i++)
{ {
pva.Remap((void *)((uint64_t)MemoryImage + (i * PAGE_SIZE)), (void *)((uint64_t)MemoryImage + (i * PAGE_SIZE)), Memory::PTFlag::RW | Memory::PTFlag::US); pva.Remap((void *)((uint64_t)MemoryImage + (i * PAGE_SIZE)), (void *)((uint64_t)MemoryImage + (i * PAGE_SIZE)), Memory::PTFlag::RW | Memory::PTFlag::US);
@ -168,6 +169,7 @@ namespace Execute
{ {
debug("Allocating %ld pages for image", TO_PAGES(ElfAppSize)); debug("Allocating %ld pages for image", TO_PAGES(ElfAppSize));
MemoryImage = (uint8_t *)KernelAllocator.RequestPages(TO_PAGES(ElfAppSize)); MemoryImage = (uint8_t *)KernelAllocator.RequestPages(TO_PAGES(ElfAppSize));
memset(MemoryImage, 0, ElfAppSize);
for (uint64_t i = 0; i < TO_PAGES(ElfAppSize); i++) for (uint64_t i = 0; i < TO_PAGES(ElfAppSize); i++)
{ {
pva.Remap((void *)((uint64_t)ProgramHeader->p_vaddr + (i * PAGE_SIZE)), (void *)((uint64_t)MemoryImage + (i * PAGE_SIZE)), Memory::PTFlag::RW | Memory::PTFlag::US); pva.Remap((void *)((uint64_t)ProgramHeader->p_vaddr + (i * PAGE_SIZE)), (void *)((uint64_t)MemoryImage + (i * PAGE_SIZE)), Memory::PTFlag::RW | Memory::PTFlag::US);
@ -187,7 +189,6 @@ namespace Execute
debug("PT_LOAD"); debug("PT_LOAD");
MAddr = (ItrProgramHeader.p_vaddr - BaseAddress) + (uintptr_t)MemoryImage; MAddr = (ItrProgramHeader.p_vaddr - BaseAddress) + (uintptr_t)MemoryImage;
memset(MemoryImage, 0, ItrProgramHeader.p_memsz);
memcpy(MemoryImage, (uint8_t *)BaseImage + ItrProgramHeader.p_offset, ItrProgramHeader.p_filesz); memcpy(MemoryImage, (uint8_t *)BaseImage + ItrProgramHeader.p_offset, ItrProgramHeader.p_filesz);
debug("MemoryImage: %#lx", MemoryImage); debug("MemoryImage: %#lx", MemoryImage);
debug("MAddr: %#lx", MAddr); debug("MAddr: %#lx", MAddr);