ESP32 Forum

Posted: **Wed Feb 13, 2019 7:20 pm**

Hi,
I wish to remove directory and and its contents like rm -rf <target> from SD card

I found this example:

Code: [Select all] [Expand/Collapse]

#define _XOPEN_SOURCE 500
#include <stdio.h>
#include <ftw.h>
#include <unistd.h>
 
int unlink_cb(const char *fpath, const struct stat *sb, int typeflag, struct FTW *ftwbuf)
{
    int rv = remove(fpath);
 
    if (rv)
        perror(fpath);
 
    return rv;
}
 
int rmrf(char *path)
{
    return nftw(path, unlink_cb, 64, FTW_DEPTH | FTW_PHYS);
}

GeSHi © Codebox Plus Extension

But I get "fatal error: ftw.h: No such file or directory" even though I'm defining _XOPEN_SOURCE 500.
I tried to define XOPEN_SOURCE as

Code: Select all

CFLAGS := -D_OXPEN_SOURCE=500

in the project Makefile, but that caused a lot of other idf components compilation errors.

Posted: **Wed Feb 13, 2019 10:50 pm**

CFLAGS := -D_OXPEN_SOURCE=500

Typo on forum or in code?

Posted: **Thu Feb 14, 2019 3:04 am**

I don't think our newlib implements nftw; it was a pretty recent addition to their codebase. Suggest you use the 'classic' opendir/readdir calls instead, and do the recursion yourself.

Posted: **Thu Feb 14, 2019 1:33 pm**

Typo on forum or in code?

sorry, on forum.

Suggest you use the 'classic' opendir/readdir calls instead, and do the recursion yourself.

Ok. Thanks for the quick reply (:

ESP32 Forum

Delete folder and contents?

Delete folder and contents?

Re: Delete folder and contents?

Re: Delete folder and contents?

Re: Delete folder and contents?