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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	subse-
       quent 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)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | ATTRIBUTES | SEE ALSO

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