openpty(3)                 Library Functions Manual                 openpty(3)

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       openpty, login_tty, forkpty - <?><?><?><?><?><?><?> <?><?><?>
       <?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?><?>

LIBRARY
       System utilities library (libutil, -lutil)

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       #include <pty.h>

       int openpty(int *amaster, int *aslave, char *name,
                     const struct termios *termp,
                     const struct winsize *winp);
       pid_t forkpty(int *amaster, char *name,
                     const struct termios *termp,
                     const struct winsize *winp);

       #include <utmp.h>

       int login_tty(int fd);

<?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> openpty() <?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?><?><?>
       <?> <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
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       <?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?> amaster <?> aslave. <?><?><?><?> name
       <?><?> <?><?><?><?><?> NULL, <?><?> <?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?> name. <?><?><?><?> termp
       <?><?> <?><?><?><?><?> NULL, <?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?>,
       <?><?><?><?><?><?><?><?><?> <?> termp. <?><?><?><?> winp <?><?>
       <?><?><?><?><?> NULL, <?><?> <?><?><?><?><?><?> <?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?>, <?><?><?><?><?><?><?><?><?> <?> winp.

       The login_tty()  function prepares for a login on the terminal referred
       to by the file descriptor fd (which may be a real terminal device, or
       the slave of a pseudoterminal as returned by openpty())  by creating a
       new session, making fd the controlling terminal for the calling
       process, setting fd to be the standard input, output, and error streams
       of the current process, and closing fd.

       The forkpty()  function combines openpty(), fork(2), and login_tty()
       to create a new process operating in a pseudoterminal.  A file
       descriptor referring to master side of the pseudoterminal is returned
       in amaster.  If name is not NULL, the buffer it points to is used to
       return the filename of the slave.  The termp and winp arguments, if not
       NULL, will determine the terminal attributes and window size of the
       slave side of the pseudoterminal.

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       <?><?><?><?> <?><?><?><?><?> openpty(), login_tty() <?><?><?> forkpty()
       <?><?><?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?>, <?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> -1 <?> errno
       <?><?><?><?><?><?><?><?><?> <?><?> <?><?><?> <?><?><?><?><?><?>.
       <?><?><?><?><?>, openpty(), login_tty() <?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> forkpty() <?><?><?><?><?><?><?><?><?><?> 0, <?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> forkpty()
       <?><?><?><?><?><?><?><?><?><?> ID <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?>.

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       <?><?><?><?><?> openpty() <?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> <?><?><?><?>:

       ENOENT <?><?><?> <?><?><?><?><?><?><?><?><?>
              <?><?><?><?><?><?><?><?><?><?>.

       <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> login_tty(), <?><?><?><?> ioctl(2) <?><?>
       <?><?><?><?><?> <?><?><?><?><?><?><?><?><?> fd
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>.

       <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> forkpty(), <?><?><?><?> <?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?> <?><?> <?><?><?><?> <?><?>
       <?><?><?><?><?><?><?> openpty() <?><?><?> fork(2).

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       <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?> <?> attributes(7).

       +----------------------------+----------------------------------------------------------+--------------------------+
       |<?><?><?><?><?><?><?><?><?> | <?><?><?><?><?><?><?>                                    | <?><?><?><?><?><?><?><?> |
       +----------------------------+----------------------------------------------------------+--------------------------+
       |forkpty(), openpty()        | <?><?><?><?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?> | MT-Safe locale           |
       +----------------------------+----------------------------------------------------------+--------------------------+
       |login_tty()                 | <?><?><?><?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?> | MT-Unsafe race:ttyname   |
       +----------------------------+----------------------------------------------------------+--------------------------+
<?><?><?><?><?><?><?><?><?>
       BSD.

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       <?><?><?><?><?><?><?><?><?><?><?><?> const <?><?><?><?>
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       <?><?><?><?><?><?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?><?>
       openpty() <?> forkpty() <?> glibc 2.8.

       Before glibc 2.0.92, openpty()  returns file descriptors for a BSD
       pseudoterminal pair; since glibc 2.0.92, it first attempts to open a
       UNIX 98 pseudoterminal pair, and falls back to opening a BSD
       pseudoterminal pair if that fails.

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       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?> name.
       <?><?><?><?><?><?><?>, <?><?><?><?><?> openpty() <?><?><?> forkpty()
       <?><?> <?><?><?><?><?><?><?><?><?> name <?><?> <?><?><?><?><?><?> NULL
       <?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>.

<?><?>. <?><?><?><?><?>
       fork(2), ttyname(3), pty(7)

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       <?><?><?><?><?><?> Azamat Hackimov <azamat.hackimov@gmail.com>,
       Konstantin Shvaykovskiy <kot.shv@gmail.com>, Yuri Kozlov
       <yuray@komyakino.ru> <?> <?><?><?><?> <?><?><?><?><?><?>
       <pavia00@gmail.com>

       <?><?><?><?> <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
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       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?> GNU
       <?><?><?><?><?><?> 3 <https://www.gnu.org/licenses/gpl-3.0.html>
       <?><?><?> <?><?><?><?><?> <?><?><?><?><?><?><?>, <?><?><?><?><?>
       <?><?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?>
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       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>.

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       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?> <?><?> <man-pages-ru-talks@lists.sourceforge.net>.

Linux man-pages 6.06  31 <?><?><?><?><?><?><?> 2023 <?>.            openpty(3)