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Startup Init Lite

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提交 b06d198c 编写于 作者: S sun_fan
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init: fix param .. 

Signed-off-by: Nsun_fan <sun_fan1@hoperun.com>
上级 017f716d
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Showing with 57 addition and 456 deletion
services/etc/ohos.para 已删除 100755 → 0
浏览文件 @ 017f716d
# Copyright (c) 2021 Huawei Device Co., Ltd.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
build_version = 2.0
# whether ohos is enabled.
hw_sc.build.os.enable=true
# ohos API version number.
hw_sc.build.os.apiversion=6
# ohos system version.
hw_sc.build.os.version=2.2.0
# ohos device type please use hw_sc.build.os.devicetype
# ohos release type
hw_sc.build.os.releasetype=Canary1
ro.actionable_compatible_property.enabled=false
ro.postinstall.fstab.prefix=/system
ro.secure=1
security.perf_harden=1
ro.allow.mock.location=0
ro.debuggable=1
ro.build.characteristics="default"
ro.product.model="ohos"
ro.product.name="OpenHarmony 2.0 Canary"
persist.sys.usb.config=hdc
services/include/list.h
浏览文件 @ b06d198c
......@@ -29,8 +29,7 @@ typedef struct ListNode {
#define ListEmpty(node) ((node).next == &(node) && (node).prev == &(node))
#define ListEntry(ptr, type, member) ((type *)((char *)(ptr) - offsetof(type, member)))
#define ForEachListEntry(list, node) \
(for (node = (list)->next; node != (list); node = node->next))
#define ForEachListEntry(list, node) for (node = (list)->next; node != (list); node = node->next)
void ListInit(struct ListNode *list);
void ListAddTail(struct ListNode *list, struct ListNode *item);
......
services/param/cmd/param_get.c 已删除 100644 → 0
浏览文件 @ 017f716d
/*
* Copyright (c) 2021 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <string.h>
#include <stdio.h>
#include "sys_param.h"
#define HELP_PARAM "--help"
#define BUFFER_SIZE 256
static void ProcessParam(ParamHandle handle, void* cookie)
{
if (cookie == NULL) {
printf("ProcessParam cookie is NULL\n");
return;
}
SystemGetParameterName(handle, (char*)cookie, BUFFER_SIZE);
u_int32_t size = BUFFER_SIZE;
SystemGetParameterValue(handle, ((char*)cookie) + BUFFER_SIZE, &size);
printf("\t%s = %s \n", (char*)cookie, ((char*)cookie) + BUFFER_SIZE);
}
int main(int argc, char* argv[])
{
if (argc == 1) { // 显示所有的记录
char value[BUFFER_SIZE + BUFFER_SIZE] = {0};
SystemTraversalParameter(ProcessParam, (void*)value);
return 0;
}
if (argc == 2 && strncmp(argv[1], HELP_PARAM, strlen(HELP_PARAM)) == 0) { // 显示帮助
printf("usage: getparam NAME VALUE\n");
return 0;
}
if (argc != 2) {
printf("usage: getparam NAME VALUE\n");
return 0;
}
char value[BUFFER_SIZE] = {0};
u_int32_t size = BUFFER_SIZE;
int ret = SystemGetParameter(argv[1], value, &size);
if (ret == 0) {
printf("%s \n", value);
} else {
printf("getparam %s %s fail\n", argv[1], value);
}
}
services/param/cmd/param_set.c 已删除 100644 → 0
浏览文件 @ 017f716d
/*
* Copyright (c) 2021 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <string.h>
#include <stdio.h>
#include "sys_param.h"
#define HELP_PARAM "--help"
int main(int argc, char* argv[])
{
if (argc == 1 || argc > 3) {
printf("setparam: Need 2 arguments (see \"setparam --help\")\n");
return 0;
}
if (argc == 2 && strncmp(argv[1], HELP_PARAM, strlen(HELP_PARAM)) == 0) {
printf("usage: setparam NAME VALUE\n");
return 0;
}
int ret = SystemSetParameter(argv[1], argv[2]);
if (ret == 0) {
printf("setparam %s %s success\n", argv[1], argv[2]);
} else {
printf("setparam %s %s fail\n", argv[1], argv[2]);
}
}
services/param/include/trigger_processor.h 已删除 100644 → 0
浏览文件 @ 017f716d
/*
* Copyright (c) 2021 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef BASE_STARTUP_EVENT_MANAGER_H
#define BASE_STARTUP_EVENT_MANAGER_H
#include <stdio.h>
#include "sys_param.h"
#include "init_param.h"
#include "trigger_manager.h"
#include "uv.h"
#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif
#endif
typedef struct TriggerEvent {
uv_work_t request;
EventType type;
} TriggerEvent;
typedef struct {
uv_work_t request;
EventType type;
u_int32_t contentSize;
char content[0];
} TriggerDataEvent;
#ifdef __cplusplus
#if __cplusplus
}
#endif
#endif
#endif
\ No newline at end of file
services/param/manager/param_cache.c 已删除 100644 → 0
浏览文件 @ 017f716d
/*
* Copyright (c) 2020 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "sys_param.h"
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include "param_manager.h"
#define LABEL "Manager"
#define MAX_PROPERT_IN_WATCH 5
#define NORMAL_MEMORY_FOR_PARAM_CACHE 4 * 1024
static WorkSpace g_workSpace;
static pthread_mutex_t cacheLock = PTHREAD_MUTEX_INITIALIZER;
static int InitNormalMemory(WorkSpace *workSpace, u_int32_t spaceSize)
{
PARAM_CHECK(workSpace != NULL, return -1, "Invalid param");
if (workSpace->area != NULL) {
return 0;
}
void *areaAddr = (void *)mmap(NULL, spaceSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_POPULATE | MAP_ANON, -1, 0);
PARAM_CHECK(areaAddr != MAP_FAILED, return -1, "Failed to map memory error %s", strerror(errno));
workSpace->area = (WorkArea*)areaAddr;
atomic_init(&workSpace->area->serial, 0);
workSpace->area->dataSize = spaceSize;
workSpace->area->currOffset = sizeof(WorkArea);
PARAM_LOGI("InitNormalMemory success, currOffset %u firstNode %u dataSize %u",
workSpace->area->currOffset, workSpace->area->firstNode, workSpace->area->dataSize);
return 0;
}
static ParamCacheNode *AllocParamCacheNode(WorkSpace *workSpace, u_int32_t size)
{
PARAM_CHECK(workSpace != NULL, return 0, "Invalid param");
PARAM_CHECK((workSpace->area->currOffset + size) < workSpace->area->dataSize, return 0,
"Failed to allocate currOffset %d, dataSize %d", workSpace->area->currOffset, workSpace->area->dataSize);
ParamCacheNode *cache = (ParamCacheNode *)(workSpace->area->data + workSpace->area->currOffset);
workSpace->area->currOffset += size;
return cache;
}
static int CreateParamCache(ParamCache *cache, ParamWorkSpace *workSpace, ParamEvaluatePtr evaluate)
{
PARAM_CHECK(cache != NULL && evaluate != NULL, return -1, "Invalid param");
if (cache->cacheNode != NULL) {
return 0;
}
int ret = InitNormalMemory(&g_workSpace, NORMAL_MEMORY_FOR_PARAM_CACHE);
PARAM_CHECK(ret == 0, return -1, "Failed to init normal memory");
pthread_mutex_init(&cache->lock, NULL);
cache->serial = GetWorkSpaceSerial(&workSpace->paramSpace);
cache->cacheCount = 0;
cache->evaluate = evaluate;
cache->cacheNode = (ParamCacheNode *)AllocParamCacheNode(&g_workSpace,
sizeof(ParamCache) * MAX_PROPERT_IN_WATCH);
PARAM_CHECK(cache->cacheNode != NULL, return -1, "Failed to malloc memory");
return 0;
}
static int AddParamNode(ParamCache *cache, ParamWorkSpace *workSpace, const char *name, const char *defValue)
{
PARAM_CHECK(cache != NULL && name != NULL, return -1, "Invalid param");
PARAM_CHECK(cache->cacheCount < MAX_PROPERT_IN_WATCH, return -1, "Full param in cache");
ParamCacheNode *cacheNode = &cache->cacheNode[cache->cacheCount++];
int ret = memcpy_s(cacheNode->value, sizeof(cacheNode->value), defValue, strlen(defValue));
PARAM_CHECK(ret == 0, return -1, "Failed to copy default value");
ret = ReadParamWithCheck(workSpace, name, &cacheNode->handle);
PARAM_CHECK(ret == 0, return -1, "Failed to read param");
cacheNode->serial = ReadParamSerial(workSpace, cacheNode->handle);
return ret;
}
static int CheckCacheNode(ParamWorkSpace *workSpace, ParamCacheNode *cacheNode)
{
return cacheNode && ReadParamSerial(workSpace, cacheNode->handle) != cacheNode->serial;
}
static void RefreshCacheNode(ParamWorkSpace *workSpace, ParamCacheNode *cacheNode)
{
cacheNode->serial = ReadParamSerial(workSpace, cacheNode->handle);
u_int32_t len = sizeof(cacheNode->value);
ReadParamValue(workSpace, cacheNode->handle, cacheNode->value, &len);
}
static const char *TestParamCache(ParamCache *cache, ParamWorkSpace *workSpace)
{
int changeDetected = 0;
if (pthread_mutex_trylock(&cache->lock)) {
return cache->evaluate(cache->cacheCount, cache->cacheNode);
}
if (GetWorkSpaceSerial(&workSpace->paramSpace) != cache->serial) {
changeDetected = 1;
}
for (u_int32_t i = 0; (i < cache->cacheCount) && changeDetected == 0; i++) {
changeDetected = CheckCacheNode(workSpace, &cache->cacheNode[i]);
}
if (changeDetected) {
for (u_int32_t i = 0; i < cache->cacheCount; i++) {
RefreshCacheNode(workSpace, &cache->cacheNode[i]);
}
cache->serial = GetWorkSpaceSerial(&workSpace->paramSpace);
}
pthread_mutex_unlock(&cache->lock);
return cache->evaluate(cache->cacheCount, cache->cacheNode);
}
const char *DetectParamChange(ParamWorkSpace *workSpace, ParamCache *cache,
ParamEvaluatePtr evaluate, u_int32_t count, const char *parameters[][2])
{
pthread_mutex_lock(&cacheLock);
while (cache->cacheCount == 0) {
int ret = CreateParamCache(cache, workSpace, evaluate);
PARAM_CHECK(ret == 0, break, "Failed to create cache");
for (u_int32_t i = 0; i < count; i++) {
ret = AddParamNode(cache, workSpace, parameters[i][0], parameters[i][1]);
PARAM_CHECK(ret == 0, break, "Failed to add param cache");
}
PARAM_CHECK(ret == 0, break, "Failed to add param cache");
}
pthread_mutex_unlock(&cacheLock);
return TestParamCache(cache, workSpace);
}
services/src/init_cmds.c
浏览文件 @ b06d198c
......@@ -356,7 +356,7 @@ static void DoStart(const char *cmdContent, int maxArg)
return;
}
static void DoStop(const char* cmdContent, int maxArg)
static void DoStop(const char *cmdContent, int maxArg)
{
struct CmdArgs *ctx = GetCmd(cmdContent, " ", maxArg);
if (ctx == NULL || ctx->argv == NULL || ctx->argc != maxArg) {
......@@ -371,7 +371,7 @@ static void DoStop(const char* cmdContent, int maxArg)
return;
}
static void DoReset(const char* cmdContent, int maxArg)
static void DoReset(const char *cmdContent, int maxArg)
{
struct CmdArgs *ctx = GetCmd(cmdContent, " ", maxArg);
if (ctx == NULL || ctx->argv == NULL || ctx->argc != maxArg) {
......@@ -435,7 +435,7 @@ static void DoCopyInernal(const char *source, const char *target)
dstFd = -1;
}
static void DoCopy(const char* cmdContent, int maxArg)
static void DoCopy(const char *cmdContent, int maxArg)
{
struct CmdArgs *ctx = GetCmd(cmdContent, " ", maxArg);
if (ctx == NULL || ctx->argv == NULL || ctx->argc != DEFAULT_COPY_ARGS_CNT) {
......@@ -462,7 +462,7 @@ static void DoCopy(const char* cmdContent, int maxArg)
return;
}
static void DoChown(const char* cmdContent, int maxArg)
static void DoChown(const char *cmdContent, int maxArg)
{
struct CmdArgs *ctx = GetCmd(cmdContent, " ", maxArg);
if (ctx == NULL || ctx->argv == NULL || ctx->argc != maxArg) {
......@@ -484,7 +484,7 @@ static void DoChown(const char* cmdContent, int maxArg)
return;
}
static void DoMkDir(const char* cmdContent, int maxArg)
static void DoMkDir(const char *cmdContent, int maxArg)
{
// mkdir support format:
// 1.mkdir path
......@@ -543,7 +543,7 @@ static void DoMkDir(const char* cmdContent, int maxArg)
FreeCmd(ctx);
}
static void DoChmod(const char* cmdContent, int maxArg)
static void DoChmod(const char *cmdContent, int maxArg)
{
struct CmdArgs *ctx = GetCmd(cmdContent, " ", maxArg);
if (ctx == NULL || ctx->argv == NULL || ctx->argc != maxArg) {
......@@ -562,7 +562,7 @@ static void DoChmod(const char* cmdContent, int maxArg)
return;
}
static char* CopySubStr(const char* srcStr, size_t startPos, size_t endPos)
static char* CopySubStr(const char *srcStr, size_t startPos, size_t endPos)
{
if (endPos <= startPos) {
INIT_LOGE("DoMount, invalid params<%zu, %zu> for %s.", endPos, startPos, srcStr);
......@@ -591,7 +591,7 @@ static char* CopySubStr(const char* srcStr, size_t startPos, size_t endPos)
return retStr;
}
static int GetMountFlag(unsigned long* mountflags, const char* targetStr, const char *source)
static int GetMountFlag(unsigned long *mountflags, const char *targetStr, const char *source)
{
if (targetStr == NULL) {
return 0;
......@@ -615,7 +615,7 @@ static int GetMountFlag(unsigned long* mountflags, const char* targetStr, const
return 1;
}
static int CountSpaces(const char* cmdContent, size_t* spaceCnt, size_t* spacePosArr, size_t spacePosArrLen)
static int CountSpaces(const char *cmdContent, size_t *spaceCnt, size_t *spacePosArr, size_t spacePosArrLen)
{
*spaceCnt = 0;
size_t strLen = strlen(cmdContent);
......@@ -647,7 +647,7 @@ static int CountSpaces(const char* cmdContent, size_t* spaceCnt, size_t* spacePo
return 1;
}
static void DoMount(const char* cmdContent, int maxArg)
static void DoMount(const char *cmdContent, int maxArg)
{
size_t spaceCnt = 0;
size_t spacePosArr[SPACES_CNT_IN_CMD_MAX] = {0};
......@@ -808,7 +808,7 @@ static void DoInsmod(const char *cmdContent, int maxArg)
return;
}
static void DoSetParam(const char* cmdContent, int maxArg)
static void DoSetParam(const char *cmdContent, int maxArg)
{
struct CmdArgs *ctx = GetCmd(cmdContent, " ", maxArg);
if (ctx == NULL || ctx->argv == NULL || ctx->argc != maxArg) {
......@@ -1181,7 +1181,7 @@ static void DoMakeDevice(const char *cmdContent, int maxArg)
}
#endif // __LITEOS__
void DoCmd(const CmdLine* curCmd)
void DoCmd(const CmdLine *curCmd)
{
// null curCmd or empty command, just quit.
if (curCmd == NULL || curCmd->name[0] == '\0') {
......@@ -1248,7 +1248,7 @@ void DoCmdByName(const char *name, const char *cmdContent)
}
}
void ParseCmdLine(const char* cmdStr, CmdLine* resCmd)
void ParseCmdLine(const char *cmdStr, CmdLine *resCmd)
{
size_t cmdLineLen = 0;
if (cmdStr == NULL || resCmd == NULL || (cmdLineLen = strlen(cmdStr)) == 0) {
......
ueventd/list.c 已删除 100755 → 0
浏览文件 @ 017f716d
/*
* Copyright (c) 2020 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "list.h"
void ListInit(struct ListNode *node)
{
node->next = node;
node->prev = node;
}
void ListAddTail(struct ListNode *head, struct ListNode *item)
{
item->next = head;
item->prev = head->prev;
head->prev->next = item;
head->prev = item;
}
void ListRemove(struct ListNode *item)
{
item->next->prev = item->prev;
item->prev->next = item->next;
}
ueventd/list.h 已删除 100755 → 0
浏览文件 @ 017f716d
/*
* Copyright (c) 2021 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef BASE_STARTUP_INITLITE_LIST_H
#define BASE_STARTUP_INITLITE_LIST_H
#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif
#endif
typedef struct ListNode {
struct ListNode *next;
struct ListNode *prev;
} ListNode;
#define ListEmpty(node) ((node).next == &(node) && (node).prev == &(node))
#define ListEntry(ptr, type, member) (type *)((char *)(ptr) - offsetof(type, member))
#define ForEachListEntry(list, node) \
for (node = (list)->next; node != (list); node = node->next)
void ListInit(struct ListNode *list);
void ListAddTail(struct ListNode *list, struct ListNode *item);
void ListRemove(struct ListNode *item);
#ifdef __cplusplus
#if __cplusplus
}
#endif
#endif
#endif // BASE_STARTUP_INITLITE_LIST_H
ueventd/ueventd_device_handler.c
浏览文件 @ b06d198c
......@@ -148,6 +148,41 @@ static int RemoveDeviceNode(const char *deviceNode, char **symLinks)
return unlink(deviceNode);
}
static char *FindPlatformDeviceName(char *path)
{
if (INVALIDSTRING(path)) {
return NULL;
}
if (STARTSWITH(path, "/sys/devices/platform/")) {
path += strlen("/sys/devices/platform/");
return path;
}
return NULL;
}
static void BuildDeviceSymbolLinks(char **links, int linkNum, const char *parent, const char *partitionName)
{
if (linkNum > BLOCKDEVICE_LINKS - 1) {
INIT_LOGW("Too many links, ignore");
return;
}
// If a block device without partition name.
// For now, we will not create symbol link for it.
if (!INVALIDSTRING(partitionName)) {
links[linkNum] = calloc(sizeof(char), DEVICE_FILE_SIZE);
if (links[linkNum] == NULL) {
INIT_LOGE("Failed to allocate memory for link, err = %d", errno);
return;
}
if (snprintf_s(links[linkNum], DEVICE_FILE_SIZE, DEVICE_FILE_SIZE - 1,
"/dev/block/platform/%s/by-name/%s", parent, partitionName) == -1) {
INIT_LOGE("Failed to build link");
}
}
}
static char **GetBlockDeviceSymbolLinks(const struct Uevent *uevent)
{
if (uevent == NULL || uevent->subsystem == NULL || STRINGEQUAL(uevent->subsystem, "block") == 0) {
......@@ -172,6 +207,7 @@ static char **GetBlockDeviceSymbolLinks(const struct Uevent *uevent)
int linkNum = 0;
if (links == NULL) {
INIT_LOGE("Failed to allocate memory for links, err = %d", errno);
return NULL;
}
// Reverse walk through sysPath, and check subystem file under each directory.
......@@ -184,39 +220,19 @@ static char **GetBlockDeviceSymbolLinks(const struct Uevent *uevent)
}
char *bus = realpath(subsystem, NULL);
if (bus == NULL) {
goto loop;
}
if (STRINGEQUAL(bus, "/sys/bus/platform")) {
INIT_LOGD("Find a platform device: %s", parent);
if (STARTSWITH(parent, "/sys/devices/platform/")) {
parent += strlen("/sys/devices/platform/");
if (linkNum > BLOCKDEVICE_LINKS - 1) {
INIT_LOGW("Too much links, ignore");
break;
}
links[linkNum] = calloc(sizeof(char), DEVICE_FILE_SIZE);
if (links[linkNum] == NULL) {
INIT_LOGE("Failed to allocate memory for link, err = %d", errno);
break;
}
// If a block device without partition name.
// For now, we will not create symbol link for it.
if (!INVALIDSTRING(uevent->partitionName)) {
if (snprintf_s(links[linkNum], DEVICE_FILE_SIZE, DEVICE_FILE_SIZE - 1,
"/dev/block/platform/%s/by-name/%s", parent, uevent->partitionName) == -1) {
INIT_LOGE("Failed to build link");
break;
}
if (bus != NULL) {
if (STRINGEQUAL(bus, "/sys/bus/platform")) {
INIT_LOGD("Find a platform device: %s", parent);
parent = FindPlatformDeviceName(parent);
if (parent != NULL) {
BuildDeviceSymbolLinks(links, linkNum, parent, uevent->partitionName);
}
linkNum++;
}
}
loop:
parent = dirname(parent);
continue;
}
links[linkNum] = NULL;
return links;
}
......
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