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64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/*
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* Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <assert.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include "childproc.h"
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#include "childproc_errorcodes.h"
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void buildErrorCode(errcode_t* errcode, int step, int hint, int errno_) {
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errcode_t e;
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assert(step < (1 << 8));
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e.step = step;
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assert(errno_ < (1 << 8));
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e.errno_ = errno_;
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const int maxhint = (1 << 16);
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e.hint = hint < maxhint ? hint : maxhint;
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(*errcode) = e;
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}
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int exitCodeFromErrorCode(errcode_t errcode) {
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/* We use the fail step number as exit code, but avoid 0 and 1
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* and try to avoid the [128..256) range since that one is used by
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* shells to codify abnormal kills by signal. */
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return 0x10 + errcode.step;
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}
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bool sendErrorCode(int fd, errcode_t errcode) {
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return writeFully(fd, &errcode, sizeof(errcode)) == sizeof(errcode);
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}
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bool sendAlivePing(int fd) {
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errcode_t errcode;
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buildErrorCode(&errcode, ESTEP_CHILD_ALIVE, getpid(), 0);
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return sendErrorCode(fd, errcode);
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}
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