60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2010-11-17 Bernard first version
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <finsh.h>
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#include <dirent.h>
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int libc_dirent()
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{
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DIR * dirp;
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long int save3 = 0;
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long int cur;
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int i = 0;
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int result = 0;
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struct dirent *dp;
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dirp = opendir("/");
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for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp))
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{
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/* save position 3 (after fourth entry) */
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if (i++ == 3)
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save3 = telldir(dirp);
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printf("%s\n", dp->d_name);
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/* stop at 400 (just to make sure dirp->__offset and dirp->__size are
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scrambled */
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if (i == 400)
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break;
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}
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printf("going back past 4-th entry...\n");
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/* go back to saved entry */
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seekdir(dirp, save3);
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/* Check whether telldir equals to save3 now. */
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cur = telldir(dirp);
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if (cur != save3)
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{
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printf("seekdir (d, %ld); telldir (d) == %ld\n", save3, cur);
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result = 1;
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}
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/* print remaining files (3-last) */
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for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp))
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printf("%s\n", dp->d_name);
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closedir(dirp);
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return result;
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}
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FINSH_FUNCTION_EXPORT(libc_dirent, dirent test for libc);
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