unixdev.net


Switch to SpeakEasy.net DSL

The Modular Manual Browser

Home Page
Manual: (4.4BSD-Lite2)
Page:
Section:
Apropos / Subsearch:
optional field

MUNMAP(2)                   BSD Programmer's Manual                  MUNMAP(2)

NAME
     munmap - remove a mapping

SYNOPSIS
     munmap(caddr_t 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
     getpagesize(2),  msync(2),  munmap(2),  mprotect(2),  madvise(2),  min-
     core(2)

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

4.4BSD                           May 27, 1994                                1