minherit2
Control the inheritance of pages
Usage
#include <sys/types.h>
#include <sys/mman.h>
int
minherit(caddr_t addr, size_t len, int inherit);
Overview
The minherit() system call changes the specified pages to have the inheritance characteristic inherit, which can be set to VM_INHERIT_NONE, VM_INHERIT_COPY, or VM_INHERIT_SHARE. Not all implementations will guarantee that the inheritance characteristic can be set on a page basis; the granularity of changes may be as large as an entire region.
Return values
The minherit() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.
Errors
The minherit() system call will fail if:
- [EINVAL]
-
The virtual address range specified by the addr and len arguments is not valid.
- [EACCES]
-
The flags specified by the inherit argument were not valid for the pages specified by the addr and len arguments.
Releases
155 releases since Mac OS X 10.0; the text changed 9 times.