mkdir.c

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

#include "ev3_io.h"

#include "defs.h"
#include "packets.h"
#include "error.h"
#include "funcs.h"

int mkdir(const char *path)
{
    int res;
    size_t path_sz = strlen(path) + 1;
    CREATE_DIR *mk = packet_alloc(CREATE_DIR, path_sz);
    memcpy(mk->path, path, path_sz);

    res = ev3_write(handle, (u8 *)mk, mk->packetLen + PREFIX_SIZE);
    if (res < 0) {
        errmsg = "Unable to write CREATE_DIR.";
        return ERR_COMM;
    }
    fputs("Checking reply: \n", stderr);
    CREATE_DIR_REPLY mkrep;

    res = ev3_read_timeout(handle, (u8 *)&mkrep, sizeof mkrep, TIMEOUT);
    if (res <= 0)
    {
        errmsg = "Unable to read CREATE_DIR_REPLY";
        return ERR_COMM;
    }

    if (mkrep.type == VM_ERROR)
    {
        errno = mkrep.ret;
        fputs("Operation failed.\nlast_reply=", stderr);
        print_bytes(&mkrep, mkrep.packetLen);


        errmsg = "`CREATE_DIR` was denied.";
        return ERR_VM;
    }

    errmsg = "`CREATE_DIR` was successful.";
    return ERR_UNK;
}