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-rw-r--r--lib/isc/win32/errno2result.c118
1 files changed, 118 insertions, 0 deletions
diff --git a/lib/isc/win32/errno2result.c b/lib/isc/win32/errno2result.c
new file mode 100644
index 0000000..83dbb4e
--- /dev/null
+++ b/lib/isc/win32/errno2result.c
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+
+#include <config.h>
+
+#include <stdbool.h>
+
+#include <winsock2.h>
+#include "errno2result.h"
+#include <isc/result.h>
+#include <isc/strerror.h>
+#include <isc/util.h>
+
+/*
+ * Convert a POSIX errno value into an isc_result_t. The
+ * list of supported errno values is not complete; new users
+ * of this function should add any expected errors that are
+ * not already there.
+ */
+isc_result_t
+isc__errno2resultx(int posixerrno, bool dolog,
+ const char *file, int line)
+{
+ char strbuf[ISC_STRERRORSIZE];
+
+ switch (posixerrno) {
+ case ENOTDIR:
+ case WSAELOOP:
+ case WSAEINVAL:
+ case EINVAL: /* XXX sometimes this is not for files */
+ case ENAMETOOLONG:
+ case WSAENAMETOOLONG:
+ case EBADF:
+ case WSAEBADF:
+ return (ISC_R_INVALIDFILE);
+ case ENOENT:
+ return (ISC_R_FILENOTFOUND);
+ case EACCES:
+ case WSAEACCES:
+ case EPERM:
+ return (ISC_R_NOPERM);
+ case EEXIST:
+ return (ISC_R_FILEEXISTS);
+ case EIO:
+ return (ISC_R_IOERROR);
+ case ENOMEM:
+ return (ISC_R_NOMEMORY);
+#ifdef EOVERFLOW
+ case EOVERFLOW:
+ return (ISC_R_RANGE);
+#endif
+ case ENFILE:
+ case EMFILE:
+ case WSAEMFILE:
+ return (ISC_R_TOOMANYOPENFILES);
+ case ERROR_CANCELLED:
+ return (ISC_R_CANCELED);
+ case ERROR_CONNECTION_REFUSED:
+ case WSAECONNREFUSED:
+ return (ISC_R_CONNREFUSED);
+ case WSAENOTCONN:
+ case ERROR_CONNECTION_INVALID:
+ return (ISC_R_NOTCONNECTED);
+ case ERROR_HOST_UNREACHABLE:
+ case WSAEHOSTUNREACH:
+ return (ISC_R_HOSTUNREACH);
+ case ERROR_NETWORK_UNREACHABLE:
+ case WSAENETUNREACH:
+ return (ISC_R_NETUNREACH);
+ case ERROR_NO_NETWORK:
+ return (ISC_R_NETUNREACH);
+ case ERROR_PORT_UNREACHABLE:
+ return (ISC_R_HOSTUNREACH);
+ case ERROR_SEM_TIMEOUT:
+ return (ISC_R_TIMEDOUT);
+ case WSAECONNRESET:
+ case WSAENETRESET:
+ case WSAECONNABORTED:
+ case WSAEDISCON:
+ case ERROR_OPERATION_ABORTED:
+ case ERROR_CONNECTION_ABORTED:
+ case ERROR_REQUEST_ABORTED:
+ return (ISC_R_CONNECTIONRESET);
+ case WSAEADDRNOTAVAIL:
+ return (ISC_R_ADDRNOTAVAIL);
+ case ERROR_NETNAME_DELETED:
+ case WSAENETDOWN:
+ return (ISC_R_NETUNREACH);
+ case WSAEHOSTDOWN:
+ return (ISC_R_HOSTUNREACH);
+ case WSAENOBUFS:
+ return (ISC_R_NORESOURCES);
+ default:
+ if (dolog) {
+ isc__strerror(posixerrno, strbuf, sizeof(strbuf));
+ UNEXPECTED_ERROR(file, line,
+ "unable to convert errno "
+ "to isc_result: %d: %s",
+ posixerrno, strbuf);
+ }
+ /*
+ * XXXDCL would be nice if perhaps this function could
+ * return the system's error string, so the caller
+ * might have something more descriptive than "unexpected
+ * error" to log with.
+ */
+ return (ISC_R_UNEXPECTED);
+ }
+}