PROBE::TTY.READ(3stap) TTY Tapset PROBE::TTY.READ(3stap)NAME
probe::tty.read - called when a tty line will be read
the driver name
the buffer that will receive the characters
the file name lreated to the tty
The amount of characters to be read
SystemTap Tapset Reference June 2014 PROBE::TTY.READ(3stap)
Check Out this Related Man Page
TTY(4) Linux Programmer's Manual TTY(4)NAME
tty - controlling terminal
The file /dev/tty is a character file with major number 5 and minor number 0, usually of mode 0666 and owner.group root.tty. It is a syn-
onym for the controlling terminal of a process, if any.
In addition to the ioctl() requests supported by the device that tty refers to, the following ioctl() request is supported:
Detach the current process from its controlling terminal, and remove it from its current process group, without attaching it to a
new process group (that is, set its process group ID to zero). This ioctl() call only works on file descriptors connected to
/dev/tty; this is used by daemon processes when they are invoked by a user at a terminal. The process attempts to open /dev/tty; if
the open succeeds, it detaches itself from the terminal by using TIOCNOTTY, while if the open fails, it is obviously not attached to
a terminal and does not need to detach itself.
SEE ALSO mknod(1), chown(1), getty(1), termios(3), console(4), ttys(4)Linux 1992-01-21 TTY(4)
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