Hi,
I can't create a memory mapped file, using mmap, on a nand mapped as mtd
device.
The command return invalid argument, with correct arguments, a code
example is attached.
There is a patch [1] to add support memory mapped files on mtd devices
and it's applied to linux-davinci, but don't appear to work.
Can someone verify if have the same behavior ?
Thanks.
Best Regards,
Aníbal
[1] - http://patchwork.ozlabs.org/patch/55616/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>
#include <fcntl.h>
int main() {
int memFd = -1;
unsigned char * memMap = NULL;
if((memFd = open("file..map", O_RDWR | O_SYNC)) < 0 ) {
perror("file.map");
return 0;
}
memMap = mmap(0, getpagesize(),
PROT_WRITE | PROT_READ, MAP_SHARED, memFd,0);
if(memMap == MAP_FAILED) {
perror("mmap");
return 0;
}
munmap(0, getpagesize());
close(memFd);
return 1;
}
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