tcgetsid: získat ID relace

Originální popis anglicky: tcgetsid - get session ID

Návod, kniha: Linux Programmer's Manual

STRUČNĚ

#include <termios.h> pid_t tcgetsid(int fd);

POPIS / INSTRUKCE

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.

NÁVRATOVÁ HODNOTA

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.

CHYBY / ERRORY

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.

NOTES

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

CONFORMS

POSIX 1003.1-2001

SOUVISEJÍCÍ

getsid(2)