MUNMAP(2) | System Calls Manual | MUNMAP(2) |
munmap
— remove a
mapping
#include
<sys/mman.h>
int
munmap
(void
*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, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the error.
munmap
() will fail if:
EINVAL
]madvise(2), mlock(2), mlockall(2), mmap(2), mprotect(2), msync(2), getpagesize(3)
When len is non-zero, the
munmap
() function conforms to IEEE
Std 1003.1-2008 (“POSIX.1”).
The munmap
() system call has been
available since 4.3BSD-Net/2.
IEEE Std 1003.1-2008
(“POSIX.1”) specifies that
munmap
() shall fail with
EINVAL
if len is 0.
OpenBSD performs no action in this case.
December 21, 2019 | OpenBSD-7.0 |