94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <errno.h>
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#include <log/log.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <qemu_pipe_bp.h>
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namespace {
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int open_verbose(const char* name, int flags) {
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const int fd = QEMU_PIPE_RETRY(open(name, flags));
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if (fd < 0) {
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ALOGE("%s:%d: Could not open '%s': %s",
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__func__, __LINE__, name, strerror(errno));
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}
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return fd;
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}
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} // namespace
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extern "C" {
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int qemu_pipe_open_ns(const char* ns, const char* pipeName, int flags) {
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if (pipeName == NULL || pipeName[0] == '\0') {
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errno = EINVAL;
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return -1;
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}
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const int fd = open_verbose("/dev/goldfish_pipe", flags);
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if (fd < 0) {
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return fd;
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}
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char buf[256];
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int bufLen;
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if (ns) {
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bufLen = snprintf(buf, sizeof(buf), "pipe:%s:%s", ns, pipeName);
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} else {
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bufLen = snprintf(buf, sizeof(buf), "pipe:%s", pipeName);
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}
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if (qemu_pipe_write_fully(fd, buf, bufLen + 1)) {
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ALOGE("%s:%d: Could not connect to the '%s' service: %s",
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__func__, __LINE__, buf, strerror(errno));
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return -1;
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}
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return fd;
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}
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int qemu_pipe_open(const char* pipeName) {
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return qemu_pipe_open_ns(NULL, pipeName, O_RDWR | O_NONBLOCK);
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}
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void qemu_pipe_close(int pipe) {
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close(pipe);
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}
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int qemu_pipe_read(int pipe, void* buffer, int size) {
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return read(pipe, buffer, size);
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}
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int qemu_pipe_write(int pipe, const void* buffer, int size) {
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return write(pipe, buffer, size);
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}
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int qemu_pipe_try_again(int ret) {
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return (ret < 0) && (errno == EINTR || errno == EAGAIN);
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}
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void qemu_pipe_print_error(int pipe) {
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ALOGE("pipe error: fd %d errno %d", pipe, errno);
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}
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} // extern "C"
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