Node.js process.setuid() 方法
process.setuid() 方法是 process 模块的内置应用程序编程接口,用于设置 Node.js 进程的用户身份。
句法:
process.setuid(id)
参数:此方法接受上面提到的单个参数,如下所述:
- id:它是一个必需的参数,它包含一个字符串或一个整数,表示数字 ID 或用户名字符串,如果传递了用户名,它会在解析关联的数字 ID 时阻塞。
返回:不返回任何值。
注意:此函数仅适用于 POSIX 平台。在 windows 或 android 平台上不可用,因此会导致错误,即 TypeError, setuid is not a 函数。
下面的例子说明了在 Node.js 中process.setuid() 方法的使用:
示例 1:
Javascript
// Node.js program to demonstrate the
// process.setuid() Method
// Including process module
const process = require('process');
// Print the user identity of the Node.js
// process and check whether the methods
// exists or not
if (process.getuid && process.setuid ) {
// Setting user id
process.setuid(400);
// Printing getuid() value
console.log("The user identity of the Node.js"
+ " process:", process.getuid());
}
Javascript
// Node.js program to demonstrate the
// process.setuid() Method
// Including process module
const process = require('process');
// Sett user id and check whether
// the method exists or not
if (process.setuid) {
// Within try catch
try {
process.setuid(696);
console.log("User id has successfully been set");
} catch (err) {
console.log("Failed to set user id:", err);
}
}
// Check whether the method exists or not
if (process.getuid) {
// Printing getuid() value
console.log("The user identity of the Node.js"
+ " process:", process.getuid());
}
输出:
The user identity of the Node.js process: 400
示例 2:
Javascript
// Node.js program to demonstrate the
// process.setuid() Method
// Including process module
const process = require('process');
// Sett user id and check whether
// the method exists or not
if (process.setuid) {
// Within try catch
try {
process.setuid(696);
console.log("User id has successfully been set");
} catch (err) {
console.log("Failed to set user id:", err);
}
}
// Check whether the method exists or not
if (process.getuid) {
// Printing getuid() value
console.log("The user identity of the Node.js"
+ " process:", process.getuid());
}
输出:
User id has successfully been set
The user identity of the Node.js process: 696
注意:上面的程序将使用 node filename.js 命令编译和运行。
参考: https://nodejs.org/api/process.html#process_process_setuid_id