7 files changed, 68 insertions, 3 deletions
diff --git a/src/core/hle/service/sockets/bsd.cpp b/src/core/hle/service/sockets/bsd.cpp
index e63b0a357..11f8efbac 100644
--- a/src/core/hle/service/sockets/bsd.cpp
+++ b/src/core/hle/service/sockets/bsd.cpp
@@ -559,7 +559,7 @@ std::pair<s32, Errno> BSD::PollImpl(std::vector<u8>& write_buffer, std::span<con
 
         const std::optional<FileDescriptor>& descriptor = file_descriptors[pollfd.fd];
         if (!descriptor) {
-            LOG_ERROR(Service, "File descriptor handle={} is not allocated", pollfd.fd);
+            LOG_TRACE(Service, "File descriptor handle={} is not allocated", pollfd.fd);
             pollfd.revents = PollEvents::Nval;
             return {0, Errno::SUCCESS};
         }
diff --git a/src/core/hle/service/sockets/nsd.cpp b/src/core/hle/service/sockets/nsd.cpp
index 36c6cd05c..5dfcaabb1 100644
--- a/src/core/hle/service/sockets/nsd.cpp
+++ b/src/core/hle/service/sockets/nsd.cpp
@@ -24,7 +24,7 @@ NSD::NSD(Core::System& system_, const char* name) : ServiceFramework{system_, na
     static const FunctionInfo functions[] = {
         {5, nullptr, "GetSettingUrl"},
         {10, nullptr, "GetSettingName"},
-        {11, nullptr, "GetEnvironmentIdentifier"},
+        {11, &NSD::GetEnvironmentIdentifier, "GetEnvironmentIdentifier"},
         {12, nullptr, "GetDeviceId"},
         {13, nullptr, "DeleteSettings"},
         {14, nullptr, "ImportSettings"},
@@ -103,6 +103,14 @@ void NSD::ResolveEx(HLERequestContext& ctx) {
     rb.Push(ResultSuccess);
 }
 
+void NSD::GetEnvironmentIdentifier(HLERequestContext& ctx) {
+    const std::string environment_identifier = "lp1";
+    ctx.WriteBuffer(environment_identifier);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ResultSuccess);
+}
+
 void NSD::GetApplicationServerEnvironmentType(HLERequestContext& ctx) {
     IPC::ResponseBuilder rb{ctx, 3};
     rb.Push(ResultSuccess);
diff --git a/src/core/hle/service/sockets/nsd.h b/src/core/hle/service/sockets/nsd.h
index 57760a0c8..b0cfec507 100644
--- a/src/core/hle/service/sockets/nsd.h
+++ b/src/core/hle/service/sockets/nsd.h
@@ -19,6 +19,7 @@ public:
 private:
     void Resolve(HLERequestContext& ctx);
     void ResolveEx(HLERequestContext& ctx);
+    void GetEnvironmentIdentifier(HLERequestContext& ctx);
     void GetApplicationServerEnvironmentType(HLERequestContext& ctx);
 };
 
diff --git a/src/core/hle/service/sockets/sfdnsres.cpp b/src/core/hle/service/sockets/sfdnsres.cpp
index 84cc79de8..22e4a6f49 100644
--- a/src/core/hle/service/sockets/sfdnsres.cpp
+++ b/src/core/hle/service/sockets/sfdnsres.cpp
@@ -24,7 +24,7 @@ SFDNSRES::SFDNSRES(Core::System& system_) : ServiceFramework{system_, "sfdnsres"
         {2, &SFDNSRES::GetHostByNameRequest, "GetHostByNameRequest"},
         {3, nullptr, "GetHostByAddrRequest"},
         {4, nullptr, "GetHostStringErrorRequest"},
-        {5, nullptr, "GetGaiStringErrorRequest"},
+        {5, &SFDNSRES::GetGaiStringErrorRequest, "GetGaiStringErrorRequest"},
         {6, &SFDNSRES::GetAddrInfoRequest, "GetAddrInfoRequest"},
         {7, nullptr, "GetNameInfoRequest"},
         {8, nullptr, "RequestCancelHandleRequest"},
@@ -300,6 +300,20 @@ void SFDNSRES::GetAddrInfoRequest(HLERequestContext& ctx) {
     });
 }
 
+void SFDNSRES::GetGaiStringErrorRequest(HLERequestContext& ctx) {
+    struct InputParameters {
+        GetAddrInfoError gai_errno;
+    };
+    IPC::RequestParser rp{ctx};
+    auto input = rp.PopRaw<InputParameters>();
+
+    const std::string result = Translate(input.gai_errno);
+    ctx.WriteBuffer(result);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ResultSuccess);
+}
+
 void SFDNSRES::GetAddrInfoRequestWithOptions(HLERequestContext& ctx) {
     // Additional options are ignored
     auto [data_size, emu_gai_err] = GetAddrInfoRequestImpl(ctx);
diff --git a/src/core/hle/service/sockets/sfdnsres.h b/src/core/hle/service/sockets/sfdnsres.h
index d99a9d560..282ef9071 100644
--- a/src/core/hle/service/sockets/sfdnsres.h
+++ b/src/core/hle/service/sockets/sfdnsres.h
@@ -18,6 +18,7 @@ public:
 
 private:
     void GetHostByNameRequest(HLERequestContext& ctx);
+    void GetGaiStringErrorRequest(HLERequestContext& ctx);
     void GetHostByNameRequestWithOptions(HLERequestContext& ctx);
     void GetAddrInfoRequest(HLERequestContext& ctx);
     void GetAddrInfoRequestWithOptions(HLERequestContext& ctx);
diff --git a/src/core/hle/service/sockets/sockets_translate.cpp b/src/core/hle/service/sockets/sockets_translate.cpp
index 2f9a0e39c..c1187209f 100644
--- a/src/core/hle/service/sockets/sockets_translate.cpp
+++ b/src/core/hle/service/sockets/sockets_translate.cpp
@@ -81,6 +81,44 @@ GetAddrInfoError Translate(Network::GetAddrInfoError error) {
     }
 }
 
+const char* Translate(GetAddrInfoError error) {
+    // https://android.googlesource.com/platform/bionic/+/085543106/libc/dns/net/getaddrinfo.c#254
+    switch (error) {
+    case GetAddrInfoError::SUCCESS:
+        return "Success";
+    case GetAddrInfoError::ADDRFAMILY:
+        return "Address family for hostname not supported";
+    case GetAddrInfoError::AGAIN:
+        return "Temporary failure in name resolution";
+    case GetAddrInfoError::BADFLAGS:
+        return "Invalid value for ai_flags";
+    case GetAddrInfoError::FAIL:
+        return "Non-recoverable failure in name resolution";
+    case GetAddrInfoError::FAMILY:
+        return "ai_family not supported";
+    case GetAddrInfoError::MEMORY:
+        return "Memory allocation failure";
+    case GetAddrInfoError::NODATA:
+        return "No address associated with hostname";
+    case GetAddrInfoError::NONAME:
+        return "hostname nor servname provided, or not known";
+    case GetAddrInfoError::SERVICE:
+        return "servname not supported for ai_socktype";
+    case GetAddrInfoError::SOCKTYPE:
+        return "ai_socktype not supported";
+    case GetAddrInfoError::SYSTEM:
+        return "System error returned in errno";
+    case GetAddrInfoError::BADHINTS:
+        return "Invalid value for hints";
+    case GetAddrInfoError::PROTOCOL:
+        return "Resolved protocol is unknown";
+    case GetAddrInfoError::OVERFLOW_:
+        return "Argument buffer overflow";
+    default:
+        return "Unknown error";
+    }
+}
+
 Network::Domain Translate(Domain domain) {
     switch (domain) {
     case Domain::Unspecified:
diff --git a/src/core/hle/service/sockets/sockets_translate.h b/src/core/hle/service/sockets/sockets_translate.h
index 694868b37..bd6721fd3 100644
--- a/src/core/hle/service/sockets/sockets_translate.h
+++ b/src/core/hle/service/sockets/sockets_translate.h
@@ -20,6 +20,9 @@ std::pair<s32, Errno> Translate(std::pair<s32, Network::Errno> value);
 /// Translate abstract getaddrinfo error to guest getaddrinfo error
 GetAddrInfoError Translate(Network::GetAddrInfoError value);
 
+/// Translate guest error to string
+const char* Translate(GetAddrInfoError value);
+
 /// Translate guest domain to abstract domain
 Network::Domain Translate(Domain domain);