Originální popis anglicky:
tcgetsid - get session ID
Návod, kniha: Linux Programmer's Manual
#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.
- 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.
This function is implemented via the TIOCGSID ioctl, present since Linux 2.1.71.
POSIX 1003.1-2001
getsid(2)
