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kern: implement KPageTableBase::CopyHeapToHeap(WithoutCheckDestination)

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This commit is contained in:
Michael Scire 2020-07-10 21:37:56 -07:00
commit f37eda6b86
4 changed files with 279 additions and 34 deletions
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48
libraries/libmesosphere/source/kern_k_server_session.cpp
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@ -250,14 +250,14 @@ namespace ams::kern {
/* Perform the pointer data copy. */
if (dst_user) {
R_TRY(src_page_table.CopyMemoryFromLinearToLinearWithoutCheckDestination(dst_page_table, recv_pointer, recv_size,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
static_cast<KMemoryPermission>(KMemoryPermission_NotMapped | KMemoryPermission_KernelReadWrite),
KMemoryAttribute_AnyLocked | KMemoryAttribute_Uncached | KMemoryAttribute_Locked, KMemoryAttribute_AnyLocked | KMemoryAttribute_Locked,
src_pointer,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
KMemoryPermission_UserRead,
KMemoryAttribute_Uncached, KMemoryAttribute_None));
R_TRY(src_page_table.CopyMemoryFromHeapToHeapWithoutCheckDestination(dst_page_table, recv_pointer, recv_size,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
static_cast<KMemoryPermission>(KMemoryPermission_NotMapped | KMemoryPermission_KernelReadWrite),
KMemoryAttribute_AnyLocked | KMemoryAttribute_Uncached | KMemoryAttribute_Locked, KMemoryAttribute_AnyLocked | KMemoryAttribute_Locked,
src_pointer,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
KMemoryPermission_UserRead,
KMemoryAttribute_Uncached, KMemoryAttribute_None));
} else {
R_TRY(src_page_table.CopyMemoryFromLinearToUser(recv_pointer, recv_size, src_pointer,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
@ -644,14 +644,14 @@ namespace ams::kern {
/* If the fast part of the copy didn't get everything, perform the slow part of the copy. */
if (fast_size < raw_size) {
R_TRY(src_page_table.CopyMemoryFromLinearToLinear(dst_page_table, dst_message_buffer + max_fast_size, raw_size - fast_size,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
static_cast<KMemoryPermission>(KMemoryPermission_NotMapped | KMemoryPermission_KernelReadWrite),
KMemoryAttribute_AnyLocked | KMemoryAttribute_Uncached | KMemoryAttribute_Locked, KMemoryAttribute_AnyLocked | KMemoryAttribute_Locked,
src_message_buffer + max_fast_size,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
src_perm,
KMemoryAttribute_Uncached, KMemoryAttribute_None));
R_TRY(src_page_table.CopyMemoryFromHeapToHeap(dst_page_table, dst_message_buffer + max_fast_size, raw_size - fast_size,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
static_cast<KMemoryPermission>(KMemoryPermission_NotMapped | KMemoryPermission_KernelReadWrite),
KMemoryAttribute_AnyLocked | KMemoryAttribute_Uncached | KMemoryAttribute_Locked, KMemoryAttribute_AnyLocked | KMemoryAttribute_Locked,
src_message_buffer + max_fast_size,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
src_perm,
KMemoryAttribute_Uncached, KMemoryAttribute_None));
}
} else /* if (src_user) */ {
/* The source is a user buffer, so it should be unmapped + readable. */
@ -894,14 +894,14 @@ namespace ams::kern {
/* If the fast part of the copy didn't get everything, perform the slow part of the copy. */
if (fast_size < raw_size) {
R_TRY(src_page_table.CopyMemoryFromLinearToLinear(dst_page_table, dst_message_buffer + max_fast_size, raw_size - fast_size,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
dst_perm,
KMemoryAttribute_Uncached, KMemoryAttribute_None,
src_message_buffer + max_fast_size,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
static_cast<KMemoryPermission>(KMemoryPermission_NotMapped | KMemoryPermission_KernelRead),
KMemoryAttribute_AnyLocked | KMemoryAttribute_Uncached | KMemoryAttribute_Locked, KMemoryAttribute_AnyLocked | KMemoryAttribute_Locked));
R_TRY(src_page_table.CopyMemoryFromHeapToHeap(dst_page_table, dst_message_buffer + max_fast_size, raw_size - fast_size,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
dst_perm,
KMemoryAttribute_Uncached, KMemoryAttribute_None,
src_message_buffer + max_fast_size,
KMemoryState_FlagReferenceCounted, KMemoryState_FlagReferenceCounted,
static_cast<KMemoryPermission>(KMemoryPermission_NotMapped | KMemoryPermission_KernelRead),
KMemoryAttribute_AnyLocked | KMemoryAttribute_Uncached | KMemoryAttribute_Locked, KMemoryAttribute_AnyLocked | KMemoryAttribute_Locked));
}
} else /* if (dst_user) */ {
/* The destination is a user buffer, so it should be unmapped + readable. */