service: properly convert buffers to strings

src/core/hle/service/nvdrv/nvdrv_interface.cpp

@@ -4,6 +4,7 @@
 
 #include "common/logging/log.h"
 #include "common/scope_exit.h"
+#include "common/string_util.h"
 #include "core/core.h"
 #include "core/hle/kernel/k_event.h"
 #include "core/hle/kernel/k_process.h"
@@ -29,7 +30,7 @@ void NVDRV::Open(HLERequestContext& ctx) {
     }
 
     const auto& buffer = ctx.ReadBuffer();
-    const std::string device_name(buffer.begin(), buffer.end());
+    const std::string device_name(Common::StringFromBuffer(buffer));
 
     if (device_name == "/dev/nvhost-prof-gpu") {
         rb.Push<DeviceFD>(0);

src/core/hle/service/set/system_settings_server.cpp

@@ -710,12 +710,12 @@ void ISystemSettingsServer::GetSettingsItemValueSize(HLERequestContext& ctx) {
     // The category of the setting. This corresponds to the top-level keys of
     // system_settings.ini.
     const auto setting_category_buf{ctx.ReadBuffer(0)};
-    const std::string setting_category{setting_category_buf.begin(), setting_category_buf.end()};
+    const std::string setting_category{Common::StringFromBuffer(setting_category_buf)};
 
     // The name of the setting. This corresponds to the second-level keys of
     // system_settings.ini.
     const auto setting_name_buf{ctx.ReadBuffer(1)};
-    const std::string setting_name{setting_name_buf.begin(), setting_name_buf.end()};
+    const std::string setting_name{Common::StringFromBuffer(setting_name_buf)};
 
     auto settings{GetSettings()};
     u64 response_size{0};
@@ -733,12 +733,12 @@ void ISystemSettingsServer::GetSettingsItemValue(HLERequestContext& ctx) {
     // The category of the setting. This corresponds to the top-level keys of
     // system_settings.ini.
     const auto setting_category_buf{ctx.ReadBuffer(0)};
-    const std::string setting_category{setting_category_buf.begin(), setting_category_buf.end()};
+    const std::string setting_category{Common::StringFromBuffer(setting_category_buf)};
 
     // The name of the setting. This corresponds to the second-level keys of
     // system_settings.ini.
     const auto setting_name_buf{ctx.ReadBuffer(1)};
-    const std::string setting_name{setting_name_buf.begin(), setting_name_buf.end()};
+    const std::string setting_name{Common::StringFromBuffer(setting_name_buf)};
 
     std::vector<u8> value;
     auto response = GetSettingsItemValue(value, setting_category, setting_name);

src/core/hle/service/vi/vi.cpp

@@ -15,6 +15,7 @@
 #include "common/logging/log.h"
 #include "common/math_util.h"
 #include "common/settings.h"
+#include "common/string_util.h"
 #include "common/swap.h"
 #include "core/core_timing.h"
 #include "core/hle/kernel/k_readable_event.h"
@@ -694,9 +695,7 @@ private:
     void OpenLayer(HLERequestContext& ctx) {
         IPC::RequestParser rp{ctx};
         const auto name_buf = rp.PopRaw<std::array<u8, 0x40>>();
-        const auto end = std::find(name_buf.begin(), name_buf.end(), '\0');
+        const std::string display_name(Common::StringFromBuffer(name_buf));
-
-        const std::string display_name(name_buf.begin(), end);
 
         const u64 layer_id = rp.Pop<u64>();
         const u64 aruid = rp.Pop<u64>();