munmap2
Remove a mapping
Usage
#include <sys/mman.h>
int
munmap(void *addr, size_t len);
Library
Standard C Library (libc, -lc)
Overview
The munmap() system call deletes the mappings and guards for the specified address range, and causes further references to addresses within the range to generate invalid memory references.
Return values
The munmap() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.
Errors
The munmap() system call will fail if:
- [EINVAL]
-
The len argument was zero, or some part of the region being unmapped is outside the valid address range for a process.
Releases
87 releases since FreeBSD 2.0.5-RELEASE; the text changed 48 times.