munmap man page on 4.4BSD

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MUNMAP(2)		    BSD System Calls Manual		     MUNMAP(2)

     munmap — remove a mapping

     munmap(caddr_t addr, size_t len);

     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.

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

     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.

     getpagesize(2), msync(2), munmap(2), mprotect(2), madvise(2), mincore(2)

     The munmap() function first appeared in 4.4BSD.

BSD				 May 27, 1994				   BSD

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