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NetBSD 6.1.5 - man page for munmap (netbsd section 2)

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MUNMAP(2)			     BSD 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
     Upon successful completion, munmap returns zero.  Otherwise, a value of -1 is returned and
     errno is set to indicate the error.

ERRORS
     munmap() will fail if:

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

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

STANDARDS
     The munmap() function conforms to IEEE Std 1003.1b-1993 (``POSIX.1'').

HISTORY
     The munmap() function first appeared in 4.4BSD.

BSD					   May 27, 1994 				      BSD
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