NAME
munmap —
remove a mapping
SYNOPSIS
munmap(caddr_t
addr, size_t
len);
DESCRIPTION
Themunmap()
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), mincore(2)
HISTORY
The munmap() function first appeared in
4.4BSD.