3.2.6. DVB munmap()¶
3.2.6.2. Synopsis¶
#include <unistd.h>
#include <sys/mman.h>
-
int
munmap(void *start, size_t length)¶
3.2.6.3. Arguments¶
start- Address of the mapped buffer as returned by the
mmap()function. length- Length of the mapped buffer. This must be the same value as given to
mmap().
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
startorlengthis incorrect, or no buffers have been mapped yet.