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Kernel: Allow ProcRO inode fail and pass arbitrary argument to it

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Bananymous
2026-05-20 19:06:10 +03:00
parent 7ce68b0488
commit 4ef03eac97
3 changed files with 16 additions and 13 deletions
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13
kernel/kernel/FS/ProcFS/FileSystem.cpp
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@@ -16,22 +16,23 @@ namespace Kernel
MUST(s_instance->TmpFileSystem::initialize(0555, 0, 0));
auto meminfo_inode = MUST(ProcROInode::create_new(
[](off_t offset, BAN::ByteSpan buffer) -> size_t
[](off_t offset, BAN::ByteSpan buffer, void*) -> BAN::ErrorOr<size_t>
{
ASSERT(offset >= 0);
if ((size_t)offset >= sizeof(full_meminfo_t))
return 0;
full_meminfo_t meminfo;
meminfo.page_size = PAGE_SIZE;
meminfo.free_pages = Heap::get().free_pages();
meminfo.used_pages = Heap::get().used_pages();
const full_meminfo_t meminfo {
.page_size = PAGE_SIZE,
.free_pages = Heap::get().free_pages(),
.used_pages = Heap::get().used_pages(),
};
size_t bytes = BAN::Math::min<size_t>(sizeof(full_meminfo_t) - offset, buffer.size());
memcpy(buffer.data(), (uint8_t*)&meminfo + offset, bytes);
return bytes;
},
*s_instance, 0444, 0, 0
*s_instance, nullptr, 0444, 0, 0
));
MUST(static_cast<TmpDirectoryInode*>(s_instance->root_inode().ptr())->link_inode(*meminfo_inode, "meminfo"_sv));