Login or Register to Ask a Question and Join Our Community

Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

tcgetsid(3) [mojave man page]

tcgetsid(3)						   BSD Library Functions Manual 					       tcgetsid(3)

NAME

     tcgetsid -- get the process group ID for the session leader for the controlling terminal

SYNOPSIS

     #include <termios.h>

     pid_t
     tcgetsid(int fildes);

DESCRIPTION

     The tcgetsid() function obtains the process group ID of the session for which the terminal specified by fildes is the controlling terminal.

RETURN VALUES

     Upon successful completion, tcgetsid() returns the process group ID associated with the terminal.	Otherwise, a value of (pid_t)-1 is
     returned and errno is set to indicate the error.

ERRORS

     The tcgetsid() function will fail if:

     [EACCES]		The fildes argument is not associated with a controlling terminal.

     [EBADF]		The fildes argument is not a valid file descriptor.

     [ENOTTY]		The file associated with fildes is not a terminal.

SEE ALSO

     getsid(2), setpgid(2), setsid(2), tcgetpgrp(3), termios(4)

STANDARDS

     The tcgetsid() function conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

BSD
								 December 20, 2003							       BSD

Check Out this Related Man Page

TCGETSID(3)						     Linux Programmer's Manual						       TCGETSID(3)

NAME

       tcgetsid - get session ID

SYNOPSIS

       #define _XOPEN_SOURCE 500
       #include <termios.h>

       pid_t tcgetsid(int fd);

DESCRIPTION

       The function tcgetsid() returns the session ID of the current session that has the terminal associated to fd as controlling terminal.  This
       terminal must be the controlling terminal of the calling process.

RETURN VALUE

       When fd refers to the controlling terminal of our session, the function tcgetsid() will return the session ID of this session.	Otherwise,
       -1 is returned, and errno is set appropriately.

ERRORS

       EBADF  fd is not a valid file descriptor.

       ENOTTY The calling process does not have a controlling terminal, or it has one but it is not described by fd.

VERSIONS

       tcgetsid() is provided in glibc since version 2.1.

CONFORMING TO

       POSIX.1-2001.

NOTES

       This function is implemented via the TIOCGSID ioctl(2), present since Linux 2.1.71.

SEE ALSO

       getsid(2)

COLOPHON

       This  page is part of release 3.25 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

GNU
								    2008-06-14							       TCGETSID(3)
Man Page