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kern: add KProcess::Initialize (for non-kip processes)

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Michael Scire 2020-07-21 22:13:16 -07:00 • committed by SciresM
parent 8759cb4da3
commit 51311a7332
10 changed files with 232 additions and 8 deletions
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39
libraries/libmesosphere/source/kern_k_capabilities.cpp
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@ -34,6 +34,14 @@ namespace ams::kern {
return this->SetCapabilities(caps, num_caps, page_table);
}
Result KCapabilities::Initialize(svc::KUserPointer<const u32 *> user_caps, s32 num_caps, KProcessPageTable *page_table) {
/* We're initializing a user process. */
/* Most fields have already been cleared by our constructor. */
/* Parse the user capabilities array. */
return this->SetCapabilities(user_caps, num_caps, page_table);
}
Result KCapabilities::SetCorePriorityCapability(const util::BitPack32 cap) {
/* We can't set core/priority if we've already set them. */
R_UNLESS(this->core_mask == 0, svc::ResultInvalidArgument());
@ -258,4 +266,35 @@ namespace ams::kern {
return ResultSuccess();
}
Result KCapabilities::SetCapabilities(svc::KUserPointer<const u32 *> user_caps, s32 num_caps, KProcessPageTable *page_table) {
u32 set_flags = 0, set_svc = 0;
for (s32 i = 0; i < num_caps; i++) {
/* Read the cap from userspace. */
u32 cap0;
R_TRY(user_caps.CopyArrayElementTo(std::addressof(cap0), i));
const util::BitPack32 cap = { cap0 };
if (GetCapabilityType(cap) == CapabilityType::MapRange) {
/* Check that the pair cap exists. */
R_UNLESS((++i) < num_caps, svc::ResultInvalidCombination());
/* Read the second cap from userspace. */
u32 cap1;
R_TRY(user_caps.CopyArrayElementTo(std::addressof(cap1), i));
/* Check the pair cap is a map range cap. */
const util::BitPack32 size_cap = { cap1 };
R_UNLESS(GetCapabilityType(size_cap) == CapabilityType::MapRange, svc::ResultInvalidCombination());
/* Map the range. */
R_TRY(this->MapRange(cap, size_cap, page_table));
} else {
R_TRY(this->SetCapability(cap, set_flags, set_svc, page_table));
}
}
return ResultSuccess();
}
}