userspace/ls.c


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/**
 * @file
 * poor mans 'ls' for fool-os user space
 */

#include <stdio.h>
#include <stdlib.h>

#include <sys/dirent.h>

int main(int argc, char **argv)
{
    DIR *dir;

    if(argc==1) // no param passed
    { 
        // get current working directory
        dir=opendir(getenv("PWD"));
    }
    else
    {
        // use command line argument
        dir=opendir(argv[1]);
    }

    if(dir==NULL)
    {
        printf("directory not found\n");
        return EXIT_FAILURE;
    }

    // iterate over entries
    struct dirent *d;
    while((d=readdir(dir))!=NULL)
    {
        printf("% 12i %s%c\n",d->d_ino, d->d_name, ((d->type==FS_FILE_TYPE_DIR)?'/':' '));
    }

    return EXIT_SUCCESS;
}