fe062055cb
Previously init_parser.cpp was made generic and capable of parsing any
number of differently named 'sections' or prefixed lines. We now use
these capabilities to do the parsing for ueventd.
Bug: 36250207
Bug: 33785894
Test: boot bullhead and ensure the right /dev nodes exist
with the right permissions set
Test: verify no boot time difference
Change-Id: I698ca962d414f8135af32f6c9cd778841b2b8b53
100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
/*
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* Copyright (C) 2010 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 "ueventd.h"
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#include <ctype.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <android-base/logging.h>
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#include <android-base/properties.h>
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#include <android-base/stringprintf.h>
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#include <selinux/selinux.h>
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#include "devices.h"
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#include "log.h"
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#include "util.h"
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template <bool sysfs>
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static bool ParseSingleLine(std::vector<std::string>&& line, std::string* err);
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int ueventd_main(int argc, char **argv)
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{
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/*
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* init sets the umask to 077 for forked processes. We need to
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* create files with exact permissions, without modification by
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* the umask.
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*/
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umask(000);
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/* Prevent fire-and-forget children from becoming zombies.
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* If we should need to wait() for some children in the future
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* (as opposed to none right now), double-forking here instead
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* of ignoring SIGCHLD may be the better solution.
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*/
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signal(SIGCHLD, SIG_IGN);
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InitKernelLogging(argv);
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LOG(INFO) << "ueventd started!";
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selinux_callback cb;
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cb.func_log = selinux_klog_callback;
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selinux_set_callback(SELINUX_CB_LOG, cb);
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Parser& parser = Parser::GetInstance();
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parser.AddSectionParser("subsystem", std::make_unique<SubsystemParser>());
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using namespace std::placeholders;
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parser.AddSingleLineParser("/sys/", std::bind(ParsePermissionsLine, _1, _2, true));
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parser.AddSingleLineParser("/dev/", std::bind(ParsePermissionsLine, _1, _2, false));
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parser.ParseConfig("/ueventd.rc");
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parser.ParseConfig("/vendor/ueventd.rc");
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parser.ParseConfig("/odm/ueventd.rc");
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/*
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* keep the current product name base configuration so
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* we remain backwards compatible and allow it to override
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* everything
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* TODO: cleanup platform ueventd.rc to remove vendor specific
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* device node entries (b/34968103)
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*/
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std::string hardware = android::base::GetProperty("ro.hardware", "");
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parser.ParseConfig("/ueventd." + hardware + ".rc");
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device_init();
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pollfd ufd;
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ufd.events = POLLIN;
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ufd.fd = get_device_fd();
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while (true) {
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ufd.revents = 0;
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int nr = poll(&ufd, 1, -1);
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if (nr <= 0) {
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continue;
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}
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if (ufd.revents & POLLIN) {
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handle_device_fd();
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}
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}
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return 0;
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}
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