mirror of https://github.com/electron/electron
29 lines
1.1 KiB
C++
29 lines
1.1 KiB
C++
// Copyright (c) 2022 Slack Technologies, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "shell/app/uv_stdio_fix.h"
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#include <errno.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <cstdio>
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#include <tuple>
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void FixStdioStreams() {
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// libuv may mark stdin/stdout/stderr as close-on-exec, which interferes
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// with chromium's subprocess spawning. As a workaround, we detect if these
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// streams are closed on startup, and reopen them as /dev/null if necessary.
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// Otherwise, an unrelated file descriptor will be assigned as stdout/stderr
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// which may cause various errors when attempting to write to them.
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//
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// For details see https://github.com/libuv/libuv/issues/2062
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struct stat st;
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if (fstat(STDIN_FILENO, &st) < 0 && errno == EBADF)
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std::ignore = freopen("/dev/null", "r", stdin);
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if (fstat(STDOUT_FILENO, &st) < 0 && errno == EBADF)
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std::ignore = freopen("/dev/null", "w", stdout);
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if (fstat(STDERR_FILENO, &st) < 0 && errno == EBADF)
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std::ignore = freopen("/dev/null", "w", stderr);
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}
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