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LOGIN_TTY(3) FreeBSD Library Functions Manual LOGIN_TTY(3)
NAME
login_tty - prepare a tty for a new login session
LIBRARY
System Utilities Library (libutil, -lutil)
SYNOPSIS
#include <libutil.h>
int
login_tty(int fd);
DESCRIPTION
The function login_tty() prepares a terminal for a new login session.
The file descriptor fd passed to login_tty() must be opened for reading
and writing on a terminal device. It will be made the controlling
terminal for the calling process, after allocating a new session with
setsid(2). This terminal device will also be made the standard input,
standard output, and standard error output of the calling process.
RETURN VALUES
The login_tty() function returns -1 if it could not make the device
referenced by fd the controlling terminal of the calling process, and 0
otherwise.
SEE ALSO
dup2(2), ioctl(2), setsid(2), tty(4)
HISTORY
The function login_tty() first appeared in 4.4BSD.
FreeBSD 14.0-RELEASE-p6 May 10, 2020 FreeBSD 14.0-RELEASE-p6