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MUNMAP(2)		  FreeBSD System Calls Manual		     MUNMAP(2)

NAME
     munmap -- remove a	mapping

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #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
     The munmap() 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 munmap() system call will fail	if:

     [EINVAL]		The addr argument was not page aligned,	the len	argu-
			ment was zero or negative, or some part	of the region
			being unmapped is outside the valid address range for
			a process.

SEE ALSO
     madvise(2), mincore(2), mmap(2), mprotect(2), msync(2), getpagesize(3)

HISTORY
     The munmap() system call first appeared in	4.4BSD.

FreeBSD	9.2			 May 27, 1994			   FreeBSD 9.2

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | HISTORY

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