tcgetsid — get session ID
#define _XOPEN_SOURCE 500 #include <termios.h>
pid_t tcgetsid( |
int fd); |
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.
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.
fd is not a
valid file descriptor.
The calling process does not have a controlling
terminal, or it has one but it is not described by
fd.
This page is part of release 3.24 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/.
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Copyright (C) 2002 Andries Brouwer <aebcwi.nl> Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. |