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wip on ipc send (copy last page)

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This commit is contained in:
Eggert Jung
2026-02-28 23:53:03 +01:00
parent 6668e412cc
commit 4d9e71d278
1 changed files with 4 additions and 3 deletions
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7
kernel/syscall/skeleton.cc
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@@ -253,9 +253,10 @@ int receive(Vault& v, void* buffer, size_t size) {
for(uint32_t i=0; i<num_pages; i++){
uintptr_t offset = i==0?Page::offset(ipc->ptr):0; //apply offset only on first page
uintptr_t paddr = isMapped((ipc->ptr)+(i*4096), v.thread_list[ipc->pid]->paging_tree->l4);
if (!copy_from_phys(v, paddr+offset, buffer, 4096-offset)) {
return -3;
}
if(total_len - (i*4096) > 4096)
copy_from_phys(v, paddr+offset, buffer, 4096-offset);
else
copy_from_phys(v, paddr, buffer, total_len - (i*4096));
}
return ipc->pid;