diff options
Diffstat (limited to 'cpukit/libcsupport/src/ioctl.c')
-rw-r--r-- | cpukit/libcsupport/src/ioctl.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/cpukit/libcsupport/src/ioctl.c b/cpukit/libcsupport/src/ioctl.c new file mode 100644 index 0000000000..ea05340a9d --- /dev/null +++ b/cpukit/libcsupport/src/ioctl.c @@ -0,0 +1,60 @@ +/* + * ioctl() system call + * + * This routine is not defined in the POSIX 1003.1b standard but is + * commonly supported on most UNIX and POSIX systems. + * + * COPYRIGHT (c) 1989-1999. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <stdarg.h> + +#include <rtems/libio_.h> +#include <rtems/seterr.h> + +#include <unistd.h> + +int ioctl( + int fd, + int command, + ... +) +{ + va_list ap; + rtems_status_code rc; + rtems_libio_t *iop; + void *buffer; + + rtems_libio_check_fd( fd ); + iop = rtems_libio_iop( fd ); + rtems_libio_check_is_open(iop); + + va_start(ap, command); + + buffer = va_arg(ap, void *); + + /* + * Now process the ioctl(). + */ + + if ( !iop->handlers ) + rtems_set_errno_and_return_minus_one( EBADF ); + + if ( !iop->handlers->ioctl_h ) + rtems_set_errno_and_return_minus_one( ENOTSUP ); + + rc = (*iop->handlers->ioctl_h)( iop, command, buffer ); + + return rc; +} |