@@ -15,11 +15,11 @@ import pointer from '@ohos.multimodalInput.pointer';
The following table lists the common APIs for mouse pointer management. For details about the APIs, see [ohos.multimodalInput.pointer](../reference/apis/js-apis-pointer.md).
| pointer | function isPointerVisible(callback: AsyncCallback\<boolean>): void; | Checks the visible status of the mouse pointer. |
| pointer | function setPointerVisible(visible: boolean, callback: AsyncCallback\<void>): void; | Sets the visible status of the mouse pointer. This setting takes effect for the mouse pointer globally.|
| pointer | function isPointerVisible(callback: AsyncCallback\<boolean>): void; | Checks the visible status of the mouse pointer. |
| pointer | function setPointerVisible(visible: boolean, callback: AsyncCallback\<void>): void; | Sets the visible status of the mouse pointer. This setting takes effect for the mouse pointer globally.|
| pointer | function setPointerStyle(windowId: number, pointerStyle: PointerStyle, callback: AsyncCallback\<void>): void; | Sets the mouse pointer style. This setting takes effect for the mouse pointer style of a specified window. |
| pointer | function getPointerStyle(windowId: number, callback: AsyncCallback\<PointerStyle>): void; | Obtains the mouse pointer style. |
| pointer | function getPointerStyle(windowId: number, callback: AsyncCallback\<PointerStyle>): void; | Obtains the mouse pointer style. |
## Hiding the Mouse Pointer
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@@ -77,43 +77,48 @@ When designing a color picker, you can have the mouse pointer switched to the co
5. Set the mouse pointer to the default style.
```js
importpointerfrom'@ohos.multimodalInput.pointer';
importwindowfrom'@ohos.window';
// 1. Enable the color pickup function.
// 2. Obtain the window ID.
window.getTopWindow((error,windowClass)=>{
windowClass.getProperties((error,data)=>{
varwindowId=data.id;
if(windowId<0){
console.log(`Invalid windowId`);
return;
}
try{
// 3. Set the mouse pointer to the color picker style.
The **pointer** module provides APIs related to pointer attribute management.
> **NOTE**<br>
> **NOTE**
>
> The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
## Modules to Import
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...
@@ -237,6 +238,8 @@ Obtains the mouse movement speed. This API uses a promise to return the result.
| const.product.devicetype | const char\* GetDeviceType(void) | Obtains the device type.|
| const.product.manufacturer | const char\* GetManufacture(void) | Obtains the device manufacturer.|
| const.product.brand | const char\* GetBrand(void) | Obtains the device brand.|
| const.product.name | const char\* GetMarketName(void) | Obtains the device marketing name.|
| const.build.product | const char\* GetProductSeries(void) | Obtains the device series name.|
| const.product.model | const char\* GetProductModel(void) | Obtains the device authentication model.|
| const.software.model | const char\* GetSoftwareModel(void) | Obtains the device software model.|
| const.product.hardwareversion | const char\* GetHardwareModel(void) | Obtains the device hardware model.|
| const.product.hardwareprofile | const char\* GetHardwareProfile(void) | Obtains the device hardware profile.|
| ohos.boot.sn | const char\* GetSerial(void) | Obtains the serial number (SN) of the device.|
| const.product.software.version | const char\* GetDisplayVersion(void) | Obtains the software version visible to users.|
| const.product.bootloader.version | const char\* GetBootloaderVersion(void) | Obtains the bootloader version of the device.|
| const.product.udid | int GetDevUdid(char \*udid, int size) | Obtains the UDID of the device through **DeviceInfo** or through calculation if the attempt to obtain the UDID through **DeviceInfo** fails.|
| | const char *AclGetSerial(void); | Obtains the SN of the device (with ACL check).|
| | int AclGetDevUdid(char *udid, int size); | Obtains the UDID of the device (with ACL check).|
## DeviceInfo Source
### Adaptation of OHOS Fixed-value Parameters
- OHOS fixed-value parameters:
```
const.ohos.version.security_patch
const.ohos.releasetype
const.ohos.apiversion
const.ohos.fullname
```
- Description of adaptation:
OHOS fixed-value parameters are filled by the OHOS and do not need to be adapted by vendors. Currently, these parameters are defined in the **/base/startup/init/services/etc/param/ohos_const/ohos.para** file.
### Adaptation of Vendor Fixed-value Parameters
- Vendor fixed-value parameters:
```
const.product.devicetype
const.product.manufacturer
const.product.brand
const.product.name
const.build.product
const.product.model
const.software.model
const.product.hardwareversion
const.product.hardwareprofile
const.product.software.version
const.product.bootloader.version
const.build.characteristics
... ...
```
- Description of adaptation:
Adapt parameters in the **vendor** directory based on actual requirements.
(1) Take RK3568 as an example for standard-system devices. Adapt parameters in the **/vendor/hihope/rk3568/etc/para/hardware_rk3568.para** file and install the file to the specified directory.
```
ohos_prebuilt_etc("para_for_chip_prod") {
source = "./para/hardware_rk3568.para"
install_images = [ chip_prod_base_dir ]
relative_install_dir = "para"
part_name = "product_rk3568"
}
```
(2) For mini- and small-system devices, adapt parameters in the respective **hals/utils/sys_param/vendor.para** file. For example:
- Currently, three ways are provided to obtain vendor dynamic-value parameters: cmdline, macro definition, and **BUILD.gn** definition.
1. cmdline: Values that are read from cmdline include **ohos.boot.hardware**, **ohos.boot.bootslots**, and **ohos.boot.sn**. The way to obtain **ohos.boot.sn** differs according to the system type as follows:
(1) For standard-system devices: **ohos.boot.sn** is read from cmdline (generated by U-Boot). If the SN is obtained, the value is directly read; if the file path is obtained, the value is read from the file. If the preceding attempt fails, the value is read from the default SN files; that is, **/sys/block/mmcblk0/device/cid** and **/proc/bootdevice/cid**.
(2) For mini- and small-system devices: These devices may come with their own special algorithms. Therefore, **HalGetSerial()** can be used to obtain the SN from the **hal_sys_param.c** file in the **hals/utils/sys_param** directory.
2. Macro definition: Obtain parameter values by compiling macro definitions. Currently, this mode is available only for mini- and small-system devices. For example:
```
defines = [
"INCREMENTAL_VERSION=\"${ohos_version}\"",
"BUILD_TYPE=\"${ohos_build_type}\"",
"BUILD_USER=\"${ohos_build_user}\"",
"BUILD_TIME=\"${ohos_build_time}\"",
"BUILD_HOST=\"${ohos_build_host}\"",
"BUILD_ROOTHASH=\"${ohos_build_roothash}\"",
]
```
3.**BUILD.gn** definition: Obtain parameter values from the **/base/startup/init/services/etc/BUILD.gn** file. For example:
(2) For mini-system devices, a file system is not available and therefore, the **hal_sys_param.c** and **vendor.para** files are converted into header files and are compiled to the system during compilation.
@@ -5,7 +5,7 @@ A job is a set of commands in the **.cfg** file of the init module. A maximum of
### Basic Concepts
A job can be configured in the **init.cfg** file or the custom **.cfg** file of the module. The parser of the init process aggregates commands of the jobs with the same name into one job. For jobs with the same name, the init process only ensures that the commands in the **init.cfg** file are executed in preference. It does not guarantee the execution sequence of commands in other **.cfg** files.
-Common job
-Basic job
A job executed in a fixed phase during init process startup, for example, pre-init, init, or post-init.
- pre-init: pre-initialization phase. Key services on which other services depend, such as ueventd, watchdog, and hilogd, are started in this phase. The mounting of data partitions is also done in this phase.
...
...
@@ -20,7 +20,21 @@ A job can be configured in the **init.cfg** file or the custom **.cfg** file of
A job triggered based on specific conditions. You can add conditions to a job so that the job is executed when the conditions are met.
A condition is a combination of system parameter values and supports operations such as **&&** and **||**, for example, **"condition": "sys.usb.config = none && sys.usb.configfs = 0"**. When defining commands for a job, you can add attributes in the format of **param:xxx** to form different commands.
A condition is a combination of system parameter values. It supports operations such as **&&** and **||** as well as matching of any parameter values by using the wildcard character (*).
Generally, you can configure a condition in the format shown below:
If you need to enable parameter checking in the boot phase, configure the condition as follows:
```
"condition": "boot && const.debuggable=1"
```
When defining commands for a job, you can add attributes in the format of **param:xxx** to form different commands.
### Constraints
With the system parameter module, the standard system is able to support basic, conditional, and custom jobs. The small system supports only basic jobs.
...
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@@ -29,881 +43,80 @@ With the system parameter module, the standard system is able to support basic,
### Use Cases
A job is a command set, where you can manage the commands to be executed. A maximum of 4096 commands can be added to a command set. During the init startup process, the execution of jobs helps ensure normal running of services.
Modifies the permission, which must be in the <strong>0</strong><i>xxx</i> format. <strong>chmod</strong>, <i>permission</i>, and <i>target</i> must be separated by only one space.
Mounts devices. Every two parameters must be separated by only one space. <br>For details about <strong>flags</strong>, see the <strong>mountFlagMap[]</strong> array of the <strong>mountFlagMap</strong> function in <strong>base/startup/init/services/init/init_common_cmds.c</strong>. The <strong>data</strong> field is optional.
Resets a service. <i>servicename</i> indicates the name of the service to reset. If the service has not been started, this command will start the service. If the service is running, the command will stop the service and then restart it.
Restarts the system. <i>subsystem</i> is optional. If it is not specified, the device enters the current system upon restarting. If it is specified, the device enters the corresponding subsystem upon restarting. For example, if you run <strong>reboot updater</strong>, the device enters the updater subsystem upon restarting.
Sets resource usage restrictions. <br>For details, see the <strong>resource[]</strong> array of the <strong>DoSetrlimit</strong> function in <strong>base/startup/init/services/init/init_common_cmds.c</strong>.
Runs an executable file synchronously. The **wait** function will be called to wait for the child process to end. The command must not contain more than 10 parameters.
Writes the access token to the <strong>data/service/el0/access_token/nativetoken.json</strong> file. There is one and only one space after <strong>load_access_token_id</strong>.
Loads other <strong>.cfg</strong> files. The maximum size of the target file (only <strong>/patch/fstab.cfg</strong> supported currently) is 50 KB. Each line in the <strong>/patch/fstab.cfg</strong> file is a command. The command types and formats must comply with their respective requirements mentioned in this table. A maximum of 20 commands are allowed.
| mkdir | mkdir <i>target folder</i><i>[mode]</i><i>[owner]</i><i>[group]</i><br>Example:<br/>mkdir /storage/myDirectory<br>mkdir /storage/myDirectory 0755 root root| Creates a folder. <strong>mkdir</strong> and the target folder must be separated by only one space.<B><br>System type: small system and standard system|
| chmod | chmod <i>permission</i><i>target</i><br>Example:<br/>chmod 0600 /storage/myFile.txt<br>chmod 0750 /storage/myDir | Modifies the permission, which must be in the <strong>0</strong><i>xxx</i> format. <strong>chmod</strong>, <i>permission</i>, and <i>target</i> must be separated by only one space.<B><br>System type: small system and standard system|
| chown | chown <i>uid</i><i>gid</i><i>target</i><br>Example:<br/>chown 900 800 /storage/myDir<br>chown 100 100 /storage/myFile.txt | Modifies the owner group. <strong>chown</strong>, <strong>uid</strong>, <strong>gid</strong>, and <i>target</i> must be separated by only one space.<B><br>System type: small system and standard system|
| mount | mount fileSystemType src dst flags [data]<br>Example:<br/>mount vfat /dev/mmcblk0 /sdc rw,umask=000<br>mount jffs2 /dev/mtdblock3 /storage nosuid | Mounts devices. Every two parameters must be separated by only one space. For details about <strong>flags</strong>, see the <strong>mountFlagMap[]</strong> function in <strong>base/startup/init/services/init/init\_common\_cmds.c</strong>. The <strong>data</strong> field is optional.<B><br>System type: small system and standard system|
| start | start serviceName<br>Example: start foundation| Starts services. <i>serviceName</i> must be contained in the <strong>services</strong> array.<B><br>System type: small system and standard system|
| export | export key value<br>Example:<br>export TEST /data/test| Sets environment variables. <strong>key</strong> and <strong>value</strong> respectively indicate the environment variable and its value.<B><br>System type: small system and standard system|
| rm | rm filename<br>Example:<br>rm /data/testfile| Deletes a file. <i>filename</i> indicates the absolute file path.<B><br>System type: small system and standard system|
| rmdir | rmdir dirname<br>Example:<br>rmdir /data/testdir| Deletes a directory. <i>dirname</i> indicates the absolute path of the directory. <B><br>System type: small system and standard system|
| write | write filename value<br>Example:<br>write /data/testfile 0| Writes a file. <strong>filename</strong> and <strong>value</strong> respectively indicate the absolute file path and the string to write. <B><br>System type: small system and standard system|
| stop | stop serviceName<br>Example:<br>stop console| Stops a service. <i>servicenamei> indicates the name of the service to stop.<B><br>System type: small system and standard system|
| copy | copy oldfile newfile<br>Example:<br>copy /data/old /data/new| Copies a file. <i>oldfile</i> and <i>newfile</i> respectively indicate the old and new absolute file paths.<B><br>System type: small system and standard system|
| reset | reset serviceName<br>Example:<br>reset console| Resets a service. <i>servicename</i> indicates the name of the service to reset. If the service has not been started, this command will start the service. If the service is running, the command will stop the service and then restart it.<B><br>System type: small system and standard system|
| reboot | reboot [subsystem]<br>Example:<br>reboot updater| Restarts the system. <strong>subsystem</strong> is optional. If it is not specified, the device enters the current system upon restarting. If it is specified, the device enters the corresponding subsystem upon restarting. For example, if you run <strong>reboot updater</strong>, the device enters the updater subsystem upon restarting.<B><br>System type: small system and standard system|
| sleep | sleep time<br>Example:<br>sleep 5| Enters the sleep mode. <i>time</i> indicates the sleep time, which must not exceed 5 seconds.<br>To avoid impact on services, exercise caution when running this command.<B><br>System type: small system and standard system|
| domainname | domainname name<br>Example:<br>domainname localdomain| Sets the domain name.<B><br>System type: small system and standard system|
| hostname | hostname name<br>Example:<br>hostname localhost| Sets the host name.<B><br>System type: small system and standard system|
| wait | wait filepath [time]<br>Example:<br>wait /data/testfile or wait /data/testfile 5| Waits for commands. <i>time</i> indicates the waiting time, which must not exceed 5 seconds.<B><br>System type: small system and standard system|
| setrlimit | setrlimit resource curValue maxValue<br>Example:<br>setrlimit RLIMIT_CPU 10 100| Sets resource usage restrictions.<B><br>System type: small system and standard system|
| write | write path content<br>Example:<br>write /proc/sys/kernel/sysrq 0| Writes a file.<B><br>System type: small system and standard system|
| exec | exec <i>Path of the executable file</i><i>Parameters passed by the executable file</i><br>Example:<br>exec /system/bin/mkdir /data/test.txt| Runs an executable file. This command is called by the system.<B><br>System type: small system and standard system|
| syncexec | syncexec <i>Path of the executable file</i><i>Parameters passed by the executable file</i><br>Example:<br>syncexec /system/bin/udevadm trigger| Runs an executable file synchronously. The **wait** function will be called to wait for the child process to end. The command must not contain more than 10 parameters.<B><br>System type: standard system
| mknode |mknod name { b \| c } Major Minor<br>Example:<br>mknod path b 0644 1 9| Creates an index node corresponding to a directory entry and a special file.<B><br>System type: standard system|
| makedev | makedev major minor<br>Example:<br>makedev -v update| Creates a static device node, which is usually in the <strong>/dev</strong> directory.<B><br>System type: standard system|
| symlink | symlink target link_name<br>Example:<br>symlink /proc/self/fd/0 /dev/stdin| Creates a symbolic link.<B><br>System type: standard system|
| trigger | trigger jobName<br>Example:<br>trigger early-fs| Triggers a job.<B><br>System type: standard system|
| insmod | insmod [-f] [options]<br>Example:<br>insmod xxx.ko| Loads a kernel module file.<B><br>System type: standard system|
| setparam | setparam paramName paramValue<br>Example:<br>setparam sys.usb.config hdc| Sets system parameters.<B><br>System type: standard system|
| load_persist_params | load persist params<br>Example:<br>load_persist_params | Loads <strong>persist</strong> parameters. There must be one and only one space after the <strong>load_persist_params</strong> command.<B><br>System type: standard system|
| load_param | load params<br>Example:<br>load_param /data/test.normal.para| Loads the parameters from a file to the memory.<B><br>System type: standard system|
| load_access_token_id | load_access_token_id | Writes the access token to the <strong>data/service/el0/access_token/nativetoken.json</strong> file. There is one and only one space after <strong>load_access_token_id</strong>.<B><br>System type: standard system|
| ifup | ifup <i>NIC</i><br>Example:<br>ifup eth0| Activates the specified NIC.<B><br>System type: standard system|
| mount_fstab | mount_fstab fstab.test<br>Example:<br>mount_fstab /vendor/etc/fstab.test| Mounts partitions based on the <strong>fstab</strong> file.<B><br>System type: standard system|
| umount_fstab | umount_fstab fstab.test<br>Example:<br>umount_fstab /vendor/etc/fstab.test| Unmounts partitions based on the <strong>fstab</strong> file.<B><br>System type: standard system|
| restorecon | restorecon file or dir<br>Example:<br>restorecon /file| Reloads the SELinux context.<B><br>System type: standard system|
| stopAllServices | stopAllServices [bool]<br>Example:<br>stopAllServices false or stopAllServices| Stops all services. The maximum response time is 10 ms by default.<B><br>System type: standard system|
| umount |umount path<br>Example:<br>umount /vendor| Unmounts a mounted device.<B><br>System type: standard system|
| sync | sync | Writes data to the disk synchronously. There is only one and only one space after <strong>sync</strong>.<B><br>System type: standard system|
| timer_start | timer_start serviceName<br>Example:<br>timer_start console| Starts the service timer.<B><br>System type: standard system|
| timer_stop | timer_stop serviceName<br>Example:<br>timer_stop console| Stops a service timer.<B><br>System type: standard system|
| init_global_key | init_global_key path<br>Example:<br>init_global_key /data| Initializes the encryption key of the data partition file.<B><br>System type: standard system|
| init_main_user | init_main_user| Encrypts the main user directory.<B><br>System type: standard system|
| mkswap | mkswap file<br>Example:<br>mkswap /swapfile1| Creates a swap partition on a file or device.<B><br>System type: standard system|
| swapon | swapon file <br>Example:<br>swapon /swapfile1| Activates the swap space. <B><br>System type: standard system|
| mksandbox | mksandbox fileName<br>Example:<br>mksandbox system| Creates a sandbox.<B><br>System type: standard system|
| loadcfg | loadcfg filePath<br>Example:<br>loadcfg /patch/fstab.cfg| Loads other <strong>.cfg</strong> files. The maximum size of the target file (only <strong>/patch/fstab.cfg</strong> supported currently) is 50 KB. Each line in the <strong>/patch/fstab.cfg</strong> file is a command. The command types and formats must comply with their respective requirements mentioned in this table. A maximum of 20 commands are allowed.<B><br>System type: small system|
### Available APIs
Job management is a part of the init startup process. It is a process-based function that completely serves the init startup process. It does not provide any functional APIs for other modules. It works in a way similar to command group management and does not provide help for other types of management. The following describes the job management APIs.
Parses <strong>cmds</strong> in the job. This API is used for the small system. It does not apply to the standard system because the <strong>trigger</strong> command and <strong>condition</strong> attribute are involved.
Obtains the job name, condition attribute, and <strong>cmds</strong> command group. Jobs are stored in a hash table, and commands are stored in a queue structure.
|void ParseAllJobs(const cJSON *fileRoot)|Provides the general entry for parsing jobs.| Small and standard systems|
|static void ParseJob(const cJSON *jobItem, Job *resJob)|Checks whether a job exists and parses <strong>cmds</strong> in it.| Small system|
|int GetCmdLinesFromJson(const cJSON *root, CmdLines **cmdLines)| Parses <strong>cmds</strong> in the job. This API is used for the small system.<br>It does not apply to the standard system because the <strong>trigger</strong> command and <strong>condition</strong> attribute are involved.| Small and standard systems|
|int ParseTriggerConfig(const cJSON *fileRoot, <br>int (*checkJobValid)(const char *jobName))|Parses the <strong>trigger</strong> command in the job.| Standard system|
|static int ParseTrigger_(const TriggerWorkSpace *workSpace,<br>const cJSON *triggerItem, <br>int (*checkJobValid)(const char *jobName))|Obtains the job name, condition attribute, and <strong>cmds</strong> command group.<br>Jobs are stored in a hash table, and commands are stored in a queue structure.| Standard system|
**Table 3** Description of the job triggering APIs
Finds a command group based on the job name and pushes the commands in the command group to the execution queue. This API is available only for the standard system.
|void PostTrigger(EventType type, const char *content, uint32_t contentLen)|Verifies the validity of the job name and sends a job triggering event.| Standard system|
|static void SendTriggerEvent(int type, const char *content, uint32_t contentLen)|Performs functions such as system control and starting or stopping of services based on system parameters.| Standard system|
|static void DoTriggerCmd(const struct CmdArgs *ctx)|Executes the <strong>trigger</strong> command.| Standard system|
|void DoTriggerExec(const char *triggerName)|Finds a command group based on the job name and pushes the commands in the command group to the execution queue.<br>This API is available only for the standard system.| Standard system|
|void DoJob(const char *jobName)|Matches a job based on the job name and invokes <strong>DoCmdByIndex</strong><br>to execute the commands in the job.| Small system|
|void DoCmdByIndex(int index, const char *cmdContent)|Combines parameters and commands.| Small and standard systems|
### Example
The following is the template for configuring <strong>jobs</strong> in the <strong>.cfg</strong> file. You can use it to verify the job management function.
