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Add a way to restrict permissions on cap duplication.

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This commit is contained in:
Drew Galbraith 2023-11-02 22:12:55 -07:00
parent 7dd10a3e53
commit f31652b981
10 changed files with 15 additions and 15 deletions
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3
sys/yellowstone/lib/yellowstone/yellowstone.yunq.server.cpp
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@ -31,8 +31,7 @@ void YellowstoneServerBaseThreadBootstrap(void* server_base) {
glcr::ErrorOr<YellowstoneClient> YellowstoneServerBase::CreateClient() {
uint64_t client_cap;
// FIXME: Restrict permissions to send-only here.
RET_ERR(ZCapDuplicate(endpoint_, &client_cap));
RET_ERR(ZCapDuplicate(endpoint_, ~(kZionPerm_Read), &client_cap));
return YellowstoneClient(client_cap);
}

2
sys/yellowstone/yellowstone_server.cpp
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@ -60,7 +60,7 @@ glcr::ErrorCode YellowstoneServer::HandleGetAhciInfo(const Empty&,
glcr::ErrorCode YellowstoneServer::HandleGetDenali(const Empty&,
DenaliInfo& info) {
z_cap_t new_denali;
check(ZCapDuplicate(denali_cap_, &new_denali));
check(ZCapDuplicate(denali_cap_, kZionPerm_All, &new_denali));
info.set_denali_endpoint(new_denali);
info.set_device_id(device_id_);
info.set_lba_offset(lba_offset_);