MUNMAP(2) OpenBSD Programmer's Manual MUNMAP(2)NAMEmunmap - remove a mapping
SYNOPSIS
#include <sys/types.h>
#include <sys/mman.h>
int
munmap(void *addr, size_t len);
DESCRIPTION
The munmap() system call deletes the mappings for the specified address
range, and causes further references to addresses within the range to
generate invalid memory references.
RETURN VALUES
Upon successful completion, munmap returns zero. Otherwise, a value of
-1 is returned and errno is set to indicate the error.
ERRORSmunmap() will fail if:
[EINVAL] The addr parameter was not page aligned, addr and len
specify a region that would extend beyond the end of the
address space, or some part of the region being unmapped is
not part of the currently valid address space.
SEE ALSOmadvise(2), mincore(2), mlock(2), mlockall(2), mmap(2), mprotect(2),
msync(2), getpagesize(3)HISTORY
The munmap() function first appeared in 4.4BSD.
OpenBSD 4.9 January 31, 2009 OpenBSD 4.9