57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
|
/*
|
||
|
|
* dirent.c
|
||
|
|
*
|
||
|
|
* Created on: 2010-11-17
|
||
|
|
* Author: bernard
|
||
|
|
*/
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <finsh.h>
|
||
|
|
|
||
|
|
#include <dirent.h>
|
||
|
|
int libc_dirent()
|
||
|
|
{
|
||
|
|
DIR * dirp;
|
||
|
|
long int save3 = 0;
|
||
|
|
long int cur;
|
||
|
|
int i = 0;
|
||
|
|
int result = 0;
|
||
|
|
struct dirent *dp;
|
||
|
|
|
||
|
|
dirp = opendir("/");
|
||
|
|
for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp))
|
||
|
|
{
|
||
|
|
/* save position 3 (after fourth entry) */
|
||
|
|
if (i++ == 3)
|
||
|
|
save3 = telldir(dirp);
|
||
|
|
|
||
|
|
printf("%s\n", dp->d_name);
|
||
|
|
|
||
|
|
/* stop at 400 (just to make sure dirp->__offset and dirp->__size are
|
||
|
|
scrambled */
|
||
|
|
if (i == 400)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
printf("going back past 4-th entry...\n");
|
||
|
|
|
||
|
|
/* go back to saved entry */
|
||
|
|
seekdir(dirp, save3);
|
||
|
|
|
||
|
|
/* Check whether telldir equals to save3 now. */
|
||
|
|
cur = telldir(dirp);
|
||
|
|
if (cur != save3)
|
||
|
|
{
|
||
|
|
printf("seekdir (d, %ld); telldir (d) == %ld\n", save3, cur);
|
||
|
|
result = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* print remaining files (3-last) */
|
||
|
|
for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp))
|
||
|
|
printf("%s\n", dp->d_name);
|
||
|
|
|
||
|
|
closedir(dirp);
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
FINSH_FUNCTION_EXPORT(libc_dirent, dirent test for libc);
|