개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(1M)을 검색하려면 섹션에서 1M 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

posix_openpt(2)

POSIX_OPENPT(2)             BSD System Calls Manual            POSIX_OPENPT(2)

NAME
     posix_openpt — open a pseudo-terminal device

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <fcntl.h>
     #include <stdlib.h>

     int
     posix_openpt(int oflag);

DESCRIPTION
     The posix_openpt() function allocates a new pseudo-terminal and estab‐
     lishes a connection with its master device.  A slave device shall be cre‐
     ated in /dev/pts.  After the pseudo-terminal has been allocated, the
     slave device should have the proper permissions before it can be used
     (see grantpt(3)).  The name of the slave device can be determined by
     calling ptsname(3).

     The file status flags and file access modes of the open file description
     shall be set according to the value of oflag.  Values for oflag are con‐
     structed by a bitwise-inclusive OR of flags from the following list,
     defined in <fcntl.h>:

     O_RDWR     Open for reading and writing.

     O_NOCTTY   If set posix_openpt() shall not cause the terminal device to
                become the controlling terminal for the process.

     O_CLOEXEC  Set the close-on-exec flag for the new file descriptor.

     The posix_openpt() function shall fail when oflag contains other values.

RETURN VALUES
     Upon successful completion, the posix_openpt() function shall allocate a
     new pseudo-terminal device and return a non-negative integer representing
     a file descriptor, which is connected to its master device.  Otherwise,
     -1 shall be returned and errno set to indicate the error.

ERRORS
     The posix_openpt() function shall fail if:

     [ENFILE]           The system file table is full.

     [EINVAL]           The value of oflag is not valid.

     [EAGAIN]           Out of pseudo-terminal resources.

SEE ALSO
     ptsname(3), pts(4), tty(4)

STANDARDS
     The posix_openpt() function conforms to IEEE Std 1003.1-2001 (“POSIX.1”).
     The ability to use O_CLOEXEC is an extension to the standard.

HISTORY
     The posix_openpt() function appeared in FreeBSD 5.0.  In FreeBSD 8.0,
     this function was changed to a system call.

NOTES
     The flag O_NOCTTY is included for compatibility; in FreeBSD, opening a
     terminal does not cause it to become a process's controlling terminal.

AUTHORS
     Ed Schouten <ed@FreeBSD.org>

BSD                           September 21, 2016                           BSD