TIOCSWINSZ(2const)                                          TIOCSWINSZ(2const)

NAME
       TIOCGWINSZ, TIOCSWINSZ - get and set window size

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #include <asm/termbits.h>  /* Definition of TIOC*WINSZ constants */
       #include <sys/ioctl.h>

       int ioctl(int fd, TIOCGWINSZ, struct winsize *argp);
       int ioctl(int fd, TIOCSWINSZ, const struct winsize *argp);

       #include <asm/termios.h>

       struct winsize {
           unsigned short ws_row;
           unsigned short ws_col;
           unsigned short ws_xpixel;  /* unused */
           unsigned short ws_ypixel;  /* unused */
       };

DESCRIPTION
       Window sizes are kept in the kernel, but not used by the kernel (except
       in the case of virtual consoles, where the kernel will update the
       window size when the size of the virtual console changes, for example,
       by loading a new font).

       TIOCGWINSZ
              Get window size.

       TIOCSWINSZ
              Set window size.

       When the window size changes, a SIGWINCH signal is sent to the
       foreground process group.

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(2const)

Linux man-pages 6.9.1             2024-06-13                TIOCSWINSZ(2const)