[GR-46660] Add support for geteuid in os module

PullRequest: graalpython/2836

Author: qunaibit

graalpython/com.oracle.graal.python.cext/posix/posix.c

@@ -549,6 +549,10 @@ int64_t call_getuid() {
     return getuid();
 }
 
+int64_t call_geteuid() {
+    return geteuid();
+}
+
 int64_t call_getgid() {
     return getgid();
 }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/PosixModuleBuiltins.java

@@ -351,6 +351,7 @@ public void postInitialize(Python3Core core) {
 
         if (posixLib.getBackend(posixSupport).toJavaStringUncached().equals("java")) {
             posix.setAttribute(toTruffleStringUncached("statvfs"), PNone.NO_VALUE);
+            posix.setAttribute(toTruffleStringUncached("geteuid"), PNone.NO_VALUE);
         }
     }
 
@@ -559,6 +560,15 @@ long getUid(@CachedLibrary("getPosixSupport()") PosixSupportLibrary posixLib) {
         }
     }
 
+    @Builtin(name = "geteuid", minNumOfPositionalArgs = 0)
+    @GenerateNodeFactory
+    public abstract static class GetEUidNode extends PythonBuiltinNode {
+        @Specialization
+        long getUid(@CachedLibrary("getPosixSupport()") PosixSupportLibrary posixLib) {
+            return posixLib.geteuid(getPosixSupport());
+        }
+    }
+
     @Builtin(name = "getgid", minNumOfPositionalArgs = 0)
     @GenerateNodeFactory
     public abstract static class GetGidNode extends PythonBuiltinNode {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/runtime/EmulatedPosixSupport.java

@@ -1947,6 +1947,13 @@ public long getuid() {
         return 1000;
     }
 
+    @ExportMessage
+    @SuppressWarnings("static-method")
+    @TruffleBoundary
+    public long geteuid() {
+        throw new UnsupportedPosixFeatureException("Emulated geteuid not supported");
+    }
+
     @ExportMessage
     @SuppressWarnings("static-method")
     @TruffleBoundary

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/runtime/ImageBuildtimePosixSupport.java

@@ -629,6 +629,12 @@ final long getuid(@CachedLibrary("this.nativePosixSupport") PosixSupportLibrary
         return nativeLib.getuid(nativePosixSupport);
     }
 
+    @ExportMessage
+    final long geteuid(@CachedLibrary("this.nativePosixSupport") PosixSupportLibrary nativeLib) {
+        checkNotInImageBuildtime();
+        return nativeLib.geteuid(nativePosixSupport);
+    }
+
     @ExportMessage
     final long getgid(@CachedLibrary("this.nativePosixSupport") PosixSupportLibrary nativeLib) {
         checkNotInImageBuildtime();

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/runtime/LoggingPosixSupport.java

@@ -805,6 +805,13 @@ final long getuid(
         return logExit("getuid", "%d", lib.getuid(delegate));
     }
 
+    @ExportMessage
+    final long geteuid(
+                    @CachedLibrary("this.delegate") PosixSupportLibrary lib) {
+        logEnter("geteuid", "");
+        return logExit("geteuid", "%d", lib.geteuid(delegate));
+    }
+
     @ExportMessage
     final long getgid(
                     @CachedLibrary("this.delegate") PosixSupportLibrary lib) {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/runtime/NFIPosixSupport.java

@@ -207,6 +207,7 @@ private enum PosixNativeFunction {
         call_wtermsig("(sint32):sint32"),
         call_wstopsig("(sint32):sint32"),
         call_getuid("():sint64"),
+        call_geteuid("():sint64"),
         call_getgid("():sint64"),
         call_getppid("():sint64"),
         call_getpgid("(sint64):sint64"),
@@ -1105,6 +1106,11 @@ public long getuid(@Shared("invoke") @Cached InvokeNativeFunction invokeNode) {
         return invokeNode.callLong(this, PosixNativeFunction.call_getuid);
     }
 
+    @ExportMessage
+    public long geteuid(@Shared("invoke") @Cached InvokeNativeFunction invokeNode) {
+        return invokeNode.callLong(this, PosixNativeFunction.call_geteuid);
+    }
+
     @ExportMessage
     public long getgid(@Shared("invoke") @Cached InvokeNativeFunction invokeNode) {
         return invokeNode.callLong(this, PosixNativeFunction.call_getgid);

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/runtime/PosixSupportLibrary.java

@@ -272,6 +272,8 @@ public abstract class PosixSupportLibrary extends Library {
 
     public abstract long getuid(Object receiver);
 
+    public abstract long geteuid(Object receiver);
+
     public abstract long getgid(Object receiver);
 
     public abstract long getppid(Object receiver);