port a file to ecos

I work on the ecos operating system, I want to run it on the virtual machine qemu (pc_rltk8139: architecture x86), I downloaded and installed then I started with a small code c "Hello word", which Has worked well.

Then, I develop a code c on the synthetic Linux target (Ubuntu). All the code that I created in c works well on ubuntu, i tried to do the same work on my qemu machine and transferred it to ecos wich it did not work. My code includes a copy program that requires loading data from two text files. An input file(entree.txt) contains data that will be copied to the other output file(sortie.txt). My problem is that I do not know how to integrate my files into an appropriate file system image and how to integrate it into the eCos image.

Code c:

# include <stdio.h>

# include <stdlib.h>

# define ENTREE "/home/amine/ecos/eCos-on-QEMU/entree.txt"

# define SORTIE "/home/amine/ecos/eCos-on-QEMU/sortie.txt"

int main(void)

{

FILE *f_in, *f_out;

int c;

if ((f_in = fopen(ENTREE,"r")) == NULL)

{

fprintf(stderr, "\nErreur: Impossible de lire le fichier 111 %s\n",ENTREE);

return(EXIT_FAILURE);

}

if ((f_out = fopen(SORTIE,"w")) == NULL)

{

fprintf(stderr, "\nErreur: Impossible d'ecrire dans le fichier 222 %s\n",

SORTIE);

return(EXIT_FAILURE);

}

while ((c = fgetc(f_in)) != EOF)

fputc(c, f_out);

printf("copie correcte\n");

fclose(f_in);

fclose(f_out);

return(EXIT_SUCCESS);

}

output message :

Erreur: Impossible de lire le fichier 111 /home/amine/ecos/eCos-on-QEMU/entree.txt

issue :

how to port files to ecos

waiting for your guidance.

thank you