/*********************************************************************************
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* Copyright: (C) 2025 LingYun IoT System Studio
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* All rights reserved.
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*
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* Filename: limit.c
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* Description: This file is setrlimit() example program.
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*
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* Version: 1.0.0(10/28/2025)
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* Author: Guo Wenxue <guowenxue@gmail.com>
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* ChangeLog: 1, Release initial version on "10/28/2025 10:40:37 AM"
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*
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********************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/resource.h>
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int main(void)
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{
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struct rlimit limit;
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/* 获取当前限制 */
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getrlimit(RLIMIT_NOFILE, &limit);
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printf("Max. fd limite: soft=%ld, hard=%ld\n", limit.rlim_cur, limit.rlim_max);
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/* 修改软限制为最多可打开的文件描述个数(硬限制) */
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limit.rlim_cur = limit.rlim_max;
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/* 设置当前限制 */
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if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
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perror("setrlimit");
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exit(EXIT_FAILURE);
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}
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printf("Max. fd set to %ld successfully!\n", limit.rlim_cur);
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return 0;
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}
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