APR的file info模块能够处理文件的权限信息、基础信息、目录，文件路径等。

#include <stdio.h>
#include <apr.h>
#include <apr_pools.h>
#include <apr_errno.h>
#include <apr_strings.h>
#include <apr_file_info.h>
#include <apr_time.h>

void apr_err(const char *s, apr_status_t rv)
{
    char buf[120];
    fprintf(stderr, "%s: %s (%d)\n", s, 
         apr_strerror(rv, buf, sizeof buf), rv);
}

int main(int argc,char **argv) {
    apr_initialize();
    apr_pool_t *pool;
    apr_pool_create(&pool,NULL);
    apr_status_t st;
    char *filename;
    if(argc > 1) {
        filename=argv[1];
    } else {
        filename="apr_file_info.c";
    }
        
    
    apr_finfo_t info;
    st=apr_stat(&info,filename,0,pool);
    if(st != APR_SUCCESS) {
        apr_err("apr_stat()",st);
        return st;
    }

    printf("size = %d\n",info.size);

    char *stime=apr_pcalloc(pool,1024);
    st=apr_ctime(stime,info.mtime);
    printf("mtime = %s\n",stime);

    apr_dir_t *dir;
    st=apr_dir_open(&dir,"/",pool);
    if(st != APR_SUCCESS) {
        apr_err("apr_dir_open()",st);
        return st;
    }
    while( (st = apr_dir_read(&info,0,dir)) 
           == APR_SUCCESS) {
        printf("got file: %s\n",info.name);
    }
    apr_dir_close(dir);
    
    apr_pool_destroy(pool);
    apr_terminate();
    return 0;
}

参考资料：

http://apr.apache.org/docs/apr/1.3/group__apr__file__info.html

http://apr.apache.org/docs/apr/1.3/group__apr__file__stat.html

http://apr.apache.org/docs/apr/1.3/group__apr__dir.html