plucky (2) TCSBRK.2const.gz

NAME

       TCSBRK, TCSBRKP, TIOCSBRK, TIOCCBRK - sending a break

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #include <asm/termbits.h>  /* Definition of T*BRK* constants */
       #include <sys/ioctl.h>

       int ioctl(int fd, TCSBRK, int arg);
       int ioctl(int fd, TCSBRKP, int arg);
       int ioctl(int fd, TIOCSBRK);
       int ioctl(int fd, TIOCCBRK);

DESCRIPTION

       TCSBRK Equivalent to tcsendbreak(fd, arg).

              If the terminal is using asynchronous serial data transmission, and arg is zero, then send a break
              (a stream of zero bits) for  between  0.25  and  0.5  seconds.   If  the  terminal  is  not  using
              asynchronous  serial  data  transmission,  then  either  a  break is sent, or the function returns
              without doing anything.  When arg is nonzero, nobody knows what will happen.

              (SVr4, UnixWare, Solaris, and Linux treat tcsendbreak(fd,arg) with nonzero arg  like  tcdrain(fd).
              SunOS  treats  arg  as a multiplier, and sends a stream of bits arg times as long as done for zero
              arg.  DG/UX and AIX treat arg (when nonzero) as a time interval measured in  milliseconds.   HP-UX
              ignores arg.)

       TCSBRKP
              So-called  "POSIX  version"  of  TCSBRK.   It  treats  nonzero  arg as a time interval measured in
              deciseconds, and does nothing when the driver does not support breaks.

       TIOCSBRK
              Turn break on, that is, start sending zero bits.

       TIOCCBRK
              Turn break off, that is, stop sending zero bits.

RETURN VALUE

       On success, 0 is returned.  On error, -1 is returned, and errno is set to indicate the error.

SEE ALSO

       ioctl(2), ioctl_tty(2)