tcgetsid3
Get the process group id for the session leader for the controlling terminal
Usage
#include <termios.h>
pid_t
tcgetsid(int fildes);
Overview
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.
Releases
135 releases since Mac OS X 10.4; the text changed 1 time.