3.2.6. DVB munmap()¶
3.2.6.1. Name¶
dmx-munmap - Unmap device memory
Warning
This API is still experimental.
3.2.6.2. Synopsis¶
#include <unistd.h>
#include <sys/mman.h>
-
int munmap(void *start, size_t length)¶
3.2.6.3. Arguments¶
3.2.6.4. Description¶
Unmaps a previously with the mmap()
function mapped
buffer and frees it, if possible.
3.2.6.5. Return Value¶
On success munmap()
returns 0, on failure -1 and the
errno
variable is set appropriately:
- EINVAL
The
start
orlength
is incorrect, or no buffers have been mapped yet.