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package org.jruby;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.HashMap;
import org.jruby.anno.JRubyMethod;
import org.jruby.anno.JRubyClass;
import org.jruby.platform.Platform;
import org.jruby.runtime.Arity;
import org.jruby.runtime.Block;
import org.jruby.runtime.ObjectAllocator;
import org.jruby.runtime.ObjectMarshal;
import static org.jruby.runtime.Visibility.*;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.runtime.builtin.Variable;
import org.jruby.runtime.component.VariableEntry;
import org.jruby.runtime.marshal.MarshalStream;
import org.jruby.runtime.marshal.UnmarshalStream;
import jnr.constants.platform.Errno;
@JRubyClass(name="SystemCallError", parent="StandardError")
public class RubySystemCallError extends RubyException {
private IRubyObject errno = getRuntime().getNil();
private final static Map<String, String> defaultMessages = new HashMap<String, String>();
static {
// FIXME: these descriptions should probably be moved out,
// to Constantine project which deals with all platform-dependent constants.
defaultMessages.put("Errno::EPERM", "Operation not permitted");
defaultMessages.put("Errno::ENOENT", "No such file or directory");
defaultMessages.put("Errno::ESRCH", "No such process");
defaultMessages.put("Errno::EINTR", "Interrupted system call");
defaultMessages.put("Errno::EIO", "Input/output error");
defaultMessages.put("Errno::ENXIO", "Device not configured");
defaultMessages.put("Errno::E2BIG", "Argument list too long");
defaultMessages.put("Errno::ENOEXEC", "Exec format error");
defaultMessages.put("Errno::EBADF", "Bad file descriptor");
defaultMessages.put("Errno::ECHILD", "No child processes");
defaultMessages.put("Errno::EDEADLK", "Resource deadlock avoided");
defaultMessages.put("Errno::ENOMEM", "Cannot allocate memory");
defaultMessages.put("Errno::EACCES", "Permission denied");
defaultMessages.put("Errno::EFAULT", "Bad address");
defaultMessages.put("Errno::ENOTBLK", "Block device required");
defaultMessages.put("Errno::EBUSY", "Resource busy");
defaultMessages.put("Errno::EEXIST", "File exists");
defaultMessages.put("Errno::EXDEV", "Cross-device link");
defaultMessages.put("Errno::ENODEV", "Operation not supported by device");
defaultMessages.put("Errno::ENOTDIR", "Not a directory");
defaultMessages.put("Errno::EISDIR", "Is a directory");
defaultMessages.put("Errno::EINVAL", "Invalid argument");
defaultMessages.put("Errno::ENFILE", "Too many open files in system");
defaultMessages.put("Errno::EMFILE", "Too many open files");
defaultMessages.put("Errno::ENOTTY", "Inappropriate ioctl for device");
defaultMessages.put("Errno::ETXTBSY", "Text file busy");
defaultMessages.put("Errno::EFBIG", "File too large");
defaultMessages.put("Errno::ENOSPC", "No space left on device");
defaultMessages.put("Errno::ESPIPE", "Illegal seek");
defaultMessages.put("Errno::EROFS", "Read-only file system");
defaultMessages.put("Errno::EMLINK", "Too many links");
defaultMessages.put("Errno::EPIPE", "Broken pipe");
defaultMessages.put("Errno::EDOM", "Numerical argument out of domain");
defaultMessages.put("Errno::ERANGE", "Result too large");
defaultMessages.put("Errno::EAGAIN", "Resource temporarily unavailable");
defaultMessages.put("Errno::EWOULDBLOCK", "Resource temporarily unavailable");
defaultMessages.put("Errno::EINPROGRESS", "Operation now in progress");
defaultMessages.put("Errno::EALREADY", "Operation already in progress");
defaultMessages.put("Errno::ENOTSOCK", "Socket operation on non-socket");
defaultMessages.put("Errno::EDESTADDRREQ", "Destination address required");
defaultMessages.put("Errno::EMSGSIZE", "Message too long");
defaultMessages.put("Errno::EPROTOTYPE", "Protocol wrong type for socket");
defaultMessages.put("Errno::ENOPROTOOPT", "Protocol not available");
defaultMessages.put("Errno::EPROTONOSUPPORT", "Protocol not supported");
defaultMessages.put("Errno::ESOCKTNOSUPPORT", "Socket type not supported");
defaultMessages.put("Errno::EPFNOSUPPORT", "Protocol family not supported");
defaultMessages.put("Errno::EAFNOSUPPORT", "Address family not supported by protocol family");
defaultMessages.put("Errno::EADDRINUSE", "Address already in use");
defaultMessages.put("Errno::EADDRNOTAVAIL", "Can't assign requested address");
defaultMessages.put("Errno::ENETDOWN", "Network is down");
defaultMessages.put("Errno::ENETUNREACH", "Network is unreachable");
defaultMessages.put("Errno::ENETRESET", "Network dropped connection on reset");
defaultMessages.put("Errno::ECONNABORTED", "Software caused connection abort");
defaultMessages.put("Errno::ECONNRESET", "Connection reset by peer");
defaultMessages.put("Errno::ENOBUFS", "No buffer space available");
defaultMessages.put("Errno::EISCONN", "Socket is already connected");
defaultMessages.put("Errno::ENOTCONN", "Socket is not connected");
defaultMessages.put("Errno::ESHUTDOWN", "Can't send after socket shutdown");
defaultMessages.put("Errno::ETOOMANYREFS", "Too many references: can't splice");
defaultMessages.put("Errno::ETIMEDOUT", "Operation timed out");
defaultMessages.put("Errno::ECONNREFUSED", "Connection refused");
defaultMessages.put("Errno::ELOOP", "Too many levels of symbolic links");
defaultMessages.put("Errno::ENAMETOOLONG", "File name too long");
defaultMessages.put("Errno::EHOSTDOWN", "Host is down");
defaultMessages.put("Errno::EHOSTUNREACH", "No route to host");
defaultMessages.put("Errno::ENOTEMPTY", "Directory not empty");
defaultMessages.put("Errno::EUSERS", "Too many users");
defaultMessages.put("Errno::EDQUOT", "Disc quota exceeded");
defaultMessages.put("Errno::ESTALE", "Stale NFS file handle");
defaultMessages.put("Errno::EREMOTE", "Too many levels of remote in path");
defaultMessages.put("Errno::ENOLCK", "No locks available");
defaultMessages.put("Errno::ENOSYS", "Function not implemented");
defaultMessages.put("Errno::EOVERFLOW", "Value too large to be stored in data type");
defaultMessages.put("Errno::EIDRM", "Identifier removed");
defaultMessages.put("Errno::ENOMSG", "No message of desired type");
defaultMessages.put("Errno::EILSEQ", "Illegal byte sequence");
defaultMessages.put("Errno::EBADMSG", "Bad message");
defaultMessages.put("Errno::EMULTIHOP", "EMULTIHOP (Reserved)");
defaultMessages.put("Errno::ENODATA", "No message available on STREAM");
defaultMessages.put("Errno::ENOLINK", "ENOLINK (Reserved)");
defaultMessages.put("Errno::ENOSR", "No STREAM resources");
defaultMessages.put("Errno::ENOSTR", "Not a STREAM");
defaultMessages.put("Errno::EPROTO", "Protocol error");
defaultMessages.put("Errno::ETIME", "STREAM ioctl timeout");
defaultMessages.put("Errno::EOPNOTSUPP", "Operation not supported");
defaultMessages.put("Errno::EOPNOTSUPP_DARWIN", "Operation not supported");
}
protected RubySystemCallError(Ruby runtime, RubyClass rubyClass) {
super(runtime, rubyClass, null);
}
public RubySystemCallError(Ruby runtime, RubyClass rubyClass, String message, int errno) {
super(runtime, rubyClass, message);
this.errno = runtime.newFixnum(errno);
}
private static ObjectAllocator SYSTEM_CALL_ERROR_ALLOCATOR = new ObjectAllocator() {
public IRubyObject allocate(Ruby runtime, RubyClass klass) {
RubyException instance = new RubySystemCallError(runtime, klass);
instance.setMetaClass(klass);
return instance;
}
};
private static final ObjectMarshal SYSTEM_CALL_ERROR_MARSHAL = new ObjectMarshal() {
public void marshalTo(Ruby runtime, Object obj, RubyClass type,
MarshalStream marshalStream) throws IOException {
RubySystemCallError exc = (RubySystemCallError) obj;
marshalStream.registerLinkTarget(exc);
List<Variable<Object>> attrs = exc.getVariableList();
attrs.add(new VariableEntry<Object>(
"mesg", exc.message == null ? runtime.getNil() : exc.message));
attrs.add(new VariableEntry<Object>("errno", exc.errno));
attrs.add(new VariableEntry<Object>("bt", exc.getBacktrace()));
marshalStream.dumpVariables(attrs);
}
public Object unmarshalFrom(Ruby runtime, RubyClass type,
UnmarshalStream unmarshalStream) throws IOException {
RubySystemCallError exc = (RubySystemCallError) type.allocate();
unmarshalStream.registerLinkTarget(exc);
// FIXME: Can't just pull these off the wire directly? Or maybe we should
// just use real vars all the time for these?
unmarshalStream.defaultVariablesUnmarshal(exc);
exc.message = (IRubyObject)exc.removeInternalVariable("mesg");
exc.errno = (IRubyObject)exc.removeInternalVariable("errno");
exc.set_backtrace((IRubyObject)exc.removeInternalVariable("bt"));
return exc;
}
};
public static RubyClass createSystemCallErrorClass(Ruby runtime, RubyClass standardError) {
RubyClass exceptionClass = runtime.defineClass("SystemCallError", standardError, SYSTEM_CALL_ERROR_ALLOCATOR);
exceptionClass.setMarshal(SYSTEM_CALL_ERROR_MARSHAL);
runtime.callbackFactory(RubyClass.class);
exceptionClass.defineAnnotatedMethods(RubySystemCallError.class);
return exceptionClass;
}
@JRubyMethod(optional = 2, required=0, visibility = PRIVATE)
public IRubyObject initialize(IRubyObject[] args, Block block) {
Ruby runtime = getRuntime();
RubyClass sCallErorrClass = runtime.getSystemCallError();
RubyClass klass = getMetaClass().getRealClass();
IRubyObject msg = runtime.getNil();
IRubyObject err = runtime.getNil();
boolean isErrnoClass = !klass.equals(sCallErorrClass);
if (!isErrnoClass) {
// one optional, one required args
Arity.checkArgumentCount(runtime, args, 1, 2);
msg = args[0];
if (args.length == 2) {
err = args[1];
}
if (args.length == 1 && (msg instanceof RubyFixnum)) {
err = msg;
msg = runtime.getNil();
}
} else {
// one optional and no required args
Arity.checkArgumentCount(runtime, args, 0, 1);
if (args.length == 1) {
msg = args[0];
}
// try to get errno value out of the class
err = klass.getConstant("Errno");
}
String val = null;
if (!err.isNil()) {
errno = err.convertToInteger();
int errnoVal = RubyNumeric.num2int(errno);
if (Errno.valueOf(errnoVal) != Errno.__UNKNOWN_CONSTANT__) {
// we got a valid errno value
isErrnoClass = true;
// set the metaclass to an Errno, if something other than SystemCallError or Errno wasn't provided
if (metaClass == runtime.getSystemCallError() ||
metaClass == runtime.getErrno()) {
setMetaClass(runtime.getErrno(errnoVal));
}
klass = getMetaClass().getRealClass();
// FIXME: Errno descriptions from Constantine
// on Windows are not useful at the moment.
if (!Platform.IS_WINDOWS) {
val = Errno.valueOf(errnoVal).description();
}
}
}
if (val == null) {
val = defaultMessages.get(klass.getName());
if (val == null) {
val = "Unknown error";
}
}
// MRI behavior: we don't print errno for actual Errno errors
if (!errno.isNil() && !isErrnoClass) {
val += " " + errno.toString();
}
if (!msg.isNil()) {
val += " - " + msg.convertToString();
}
message = runtime.newString(val);
return this;
}
@JRubyMethod
public IRubyObject errno() {
return errno;
}
}