V4L2 close() &manvol; v4l2-close Close a V4L2 device #include <unistd.h> int close int fd fd &fd; Closes the device. Any I/O in progress is terminated and resources associated with the file descriptor are freed. However data format parameters, current input or output, control values or other properties remain unchanged. The function returns 0 on success, -1 on failure and the errno is set appropriately. Possible error codes: EBADF fd is not a valid open file descriptor.