munmap - unmap pages of memory.

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SYNOPSIS

#include <sys/mman.h>

int munmap(addr, len)
caddr_t addr;
int len;

DESCRIPTION

munmap() removes the mappings for pages in the range [addr, addr + len). Further references to these pages will result in the delivery of a SIGSEGV signal to the process, unless these pages are considered part of the ``data'' or ``stack'' segments.

brk() and mmap() often perform implicit munmap's.

RETURN VALUES

munmap() returns:

0

on success.

-1

on failure and sets errno to indicate the error.

ERRORS

EINVAL

addr is not a multiple of the page size as returned by getpagesize.2

Addresses in the range [addr, addr + len) are outside the valid range for the address space of a process.

SEE ALSO

Created by unroff & hp-tools. © somebody (See intro for details). All Rights Reserved. Last modified 11/5/97