sunos man page for munmap

munmap(2)							   System Calls 							 munmap(2)

NAME
       munmap - unmap pages of memory

SYNOPSIS
       #include <sys/mman.h>

       int munmap(void *addr, size_t len);

DESCRIPTION
       The  munmap() function removes the mappings for pages in the range [addr, addr + len), rounding the len argument up to the next multiple of
       the page size as returned by sysconf(3C). If addr is not the address of a mapping established by a prior call to mmap(2), the  behavior	is
       undefined.  After  a successful call to munmap() and before any subsequent mapping of the unmapped pages, further references to these pages
       will result in the delivery of a SIGBUS or SIGSEGV signal to the process.

       The mmap(2) function often performs an implicit munmap().

RETURN VALUES
       Upon successful completion, munmap() returns 0; otherwise, it returns -1 and sets errno to indicate an error.

ERRORS
       The munmap() function will fail if:

       EINVAL	       The  addr argument is not a multiple of the page size as returned by sysconf(3C); addresses in the range [addr, addr + len)
		       are outside the valid range for the address space of a process; or the  len argument has a value less than or equal to 0.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       mmap(2), sysconf(3C), attributes(5), standards(5)

SunOS 5.10							    5 Jan 1998								 munmap(2)