32 lines
728 B
C
32 lines
728 B
C
/*
|
|
* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#include <sys/mman.h>
|
|
|
|
int switcheroo(int fd, int prot, void *from, void *to, int size)
|
|
{
|
|
if(munmap(to, size) < 0){
|
|
return(-1);
|
|
}
|
|
if(mmap(to, size, prot, MAP_SHARED | MAP_FIXED, fd, 0) != to){
|
|
return(-1);
|
|
}
|
|
if(munmap(from, size) < 0){
|
|
return(-1);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* Emacs will notice this stuff at the end of the file and automatically
|
|
* adjust the settings for this buffer only. This must remain at the end
|
|
* of the file.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-file-style: "linux"
|
|
* End:
|
|
*/
|