help with data type sizes Post: 302489687

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tcgetsid

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

NAME

       tcgetsid - get session ID

SYNOPSIS

       #define _XOPEN_SOURCE 500	/* See feature_test_macros(7) */
       #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 3.44 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
								    2010-09-10							       TCGETSID(3)

10 More Discussions You Might Find Interesting

1. Programming

FILE data type

Discussion started by: milhan

2. Programming

time_t data type-- what does start +1 mean?

Discussion started by: whatisthis

3. Programming

data type limitation

Discussion started by: ALTRUNVRSOFLN

4. AIX

Value too large to be stored in data type???

Discussion started by: limame