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Rev 2694 Rev 2699
Line 241... Line 241...
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{
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{
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    DIR *dirp = malloc(sizeof(DIR));
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    DIR *dirp = malloc(sizeof(DIR));
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    if (!dirp)
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    if (!dirp)
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        return NULL;
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        return NULL;
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    dirp->fd = open(dirname, 0);    /* TODO: must be a directory */
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    dirp->fd = open(dirname, 0);    /* TODO: must be a directory */
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    if (!dirp->fd) {
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    if (dirp->fd < 0) {
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        free(dirp);
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        free(dirp);
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        return NULL;
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        return NULL;
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    }
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    }
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    dirp->pos = 0;
 - 
 
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    return dirp;
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    return dirp;
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}
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}
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struct dirent *readdir(DIR *dirp)
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struct dirent *readdir(DIR *dirp)
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{
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{
- 
 
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    ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1);
- 
 
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    if (len <= 0)
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    return NULL;    /* TODO */ 
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        return NULL;
- 
 
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    return &dirp->res;
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}
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}
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void rewinddir(DIR *dirp)
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void rewinddir(DIR *dirp)
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{
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{
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    dirp->pos = 0;
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    (void) lseek(dirp->fd, 0, SEEK_SET);
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}
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}
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int closedir(DIR *dirp)
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int closedir(DIR *dirp)
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{
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{
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    (void) close(dirp->fd);
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    (void) close(dirp->fd);