[−][src]Macro nix::ioctl_write_buf
Generates a wrapper function for an ioctl that writes an array of elements to the kernel.
The arguments to this macro are:
- The function name
- The ioctl identifier
- The ioctl sequence number
- The data type passed by this ioctl
The generated function has the following signature:
ⓘThis example is not tested
pub unsafe fn FUNCTION_NAME(fd: libc::c_int, data: &[DATA_TYPE]) -> Result<libc::c_int>
For a more in-depth explanation of ioctls, see ::sys::ioctl
.
Examples
const SPI_IOC_MAGIC: u8 = b'k'; // Defined in linux/spi/spidev.h const SPI_IOC_TYPE_MESSAGE: u8 = 0; ioctl_write_buf!(spi_transfer, SPI_IOC_MAGIC, SPI_IOC_TYPE_MESSAGE, spi_ioc_transfer);