/*********************************************************************************
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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: access.c
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* Description: This file is access() example
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*
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* Version: 1.0.0(10/15/2025)
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* Author: Guo Wenxue <guowenxue@gmail.com>
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* ChangeLog: 1, Release initial version on "10/15/2025 02:43:08 PM"
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*
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********************************************************************************/
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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int main(int argc, char *argv[])
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{
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const char *file = argv[1];
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if (argc != 2)
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{
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fprintf(stderr, "Usage: %s <file_path>\n", argv[0]);
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return 1;
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}
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if (access(file, F_OK) == -1)
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{
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fprintf(stderr, "cannot access '%s': %s\n", file, strerror(errno));
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return 1;
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}
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if (access(file, R_OK) == 0)
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{
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printf("Read OKAY\n");
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}
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else
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{
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printf("Read FAIL: (%s)\n", strerror(errno));
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}
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if (access(file, W_OK) == 0)
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{
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printf("Write OKAY\n");
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}
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else
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{
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printf("Write FAIL: (%s)\n", strerror(errno));
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}
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if (access(file, X_OK) == 0)
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{
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printf("Exec OKAY\n");
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}
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else
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{
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printf("Exec FAIL: (%s)\n", strerror(errno));
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}
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return 0;
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}
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