I use this simple program to test seekdir

#include <assert.h>
#include <dirent.h>
#include <stdio.h>
#include <sys/types.h>

int main(int argc, char** argv)
{
    off_t offset;
    DIR* pDir;
    struct dirent* pDirent;

    assert (argc == 2);
    printf ("Opening dir: %s\n", argv[1]);
    pDir = opendir(argv[1]);

    pDirent = readdir(pDir);
    printf("1st entry: %s \n", pDirent->d_name);
    pDirent = readdir(pDir);
    printf("2nd entry: %s \n", pDirent->d_name);
    pDirent = readdir(pDir);
    if (pDirent == NULL)
        return 1;
    printf("3rd entry: %s\n", pDirent->d_name);
    offset = telldir(pDir);
    printf("The offset (telldir) for the 4th entry is %d,\n", offset);
    pDirent = readdir(pDir);
    if (pDirent == NULL)
        return 1;
    printf("4th entry: %s\n", pDirent->d_name);
    pDirent = readdir(pDir);
    if (pDirent == NULL)
        return 1;
    printf("5th entry: %s\n", pDirent->d_name);
    pDirent = readdir(pDir);
    if (pDirent == NULL)
        return 1;
    printf("6th entry: %s\n", pDirent->d_name);
    printf("Using seekdir to get back to the 4th entry\n");
    seekdir(pDir, offset);
    pDirent = readdir(pDir);
    printf("4th entry (using seekdir): %s\n", pDirent->d_name);
    return 0;
}

and the output is

root@amber:/mnt/yaffs> ls
lost+found
root@amber:/mnt/yaffs> touch a b c d e f g
root@amber:/mnt/yaffs> ls -al
total 12
drw-rw-rw- 1 root root 2048 Jan 1 00:03 .
drwxr-xr-x 4 root root 4096 Mar 27 2007 ..
-rw-r--r-- 1 root root    0 Jan 1 00:03 a
-rw-r--r-- 1 root root    0 Jan 1 00:03 b
-rw-r--r-- 1 root root    0 Jan 1 00:03 c
-rw-r--r-- 1 root root    0 Jan 1 00:03 d
-rw-r--r-- 1 root root    0 Jan 1 00:03 e
-rw-r--r-- 1 root root    0 Jan 1 00:03 f
-rw-r--r-- 1 root root    0 Jan 1 00:03 g
drw-rw-rw- 1 root root 2048 Jan 1 00:03 lost+found
root@amber:/mnt/yaffs> seekDirTest .
Opening dir: .
1st entry: .
2nd entry: ..
3rd entry: g
The offset (telldir) for the 4th entry is 3,
4th entry: f
5th entry: e
6th entry: d
Using seekdir to get back to the 4th entry
4th entry (using seekdir): f
root@amber:/mnt/yaffs> rm g
root@amber:/mnt/yaffs> seekDirTest .
Opening dir: .
1st entry: .
2nd entry: ..
3rd entry: f
The offset (telldir) for the 4th entry is 3,
4th entry: e
5th entry: d
6th entry: c
Using seekdir to get back to the 4th entry
4th entry (using seekdir): f
root@amber:/mnt/yaffs>

After deleting g, the 4th entry is f, but supposed to be e.

Anthony

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