source: MondoRescue/branches/2.2.2/mindi-busybox/e2fsprogs/e2p/iod.c@ 1247

/*
 * iod.c        - Iterate a function on each entry of a directory
 *
 * Copyright (C) 1993, 1994  Remy Card <card@masi.ibp.fr>
 *                           Laboratoire MASI, Institut Blaise Pascal
 *                           Universite Pierre et Marie Curie (Paris VI)
 *
 * This file can be redistributed under the terms of the GNU Library General
 * Public License
 */

/*
 * History:
 * 93/10/30 - Creation
 */

#include "e2p.h"
#include <unistd.h>
#include <stdlib.h>
#include <string.h>

int iterate_on_dir (const char * dir_name,
            int (*func) (const char *, struct dirent *, void *),
            void * private)
{
    DIR * dir;
    struct dirent *de, *dep;
    int max_len, len;

    max_len = PATH_MAX + sizeof(struct dirent);
    de = (struct dirent *)xmalloc(max_len+1);
    memset(de, 0, max_len+1);

    dir = opendir (dir_name);
    if (dir == NULL) {
        free(de);
        return -1;
    }
    while ((dep = readdir (dir))) {
        len = sizeof(struct dirent);
        if (len < dep->d_reclen)
            len = dep->d_reclen;
        if (len > max_len)
            len = max_len;
        memcpy(de, dep, len);
        (*func) (dir_name, de, private);
    }
    free(de);
    closedir(dir);
    return 0;
}