NAME
tcgetsid – get session ID associated with a controlling terminal
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <termios.h>
pid_t
tcgetsid(int fd);
DESCRIPTION
The tcgetsid() function returns the process group ID of the session leader for a controlling terminal specified by fd.
ERRORS
If an error occurs, tcgetsid() returns -1 and the global variable errno is set to indicate the error, as follows:
- [EBADF]
-
The fd argument is not a valid file descriptor.
- [ENOTTY]
-
The calling process does not have a controlling terminal or the underlying terminal device represented by fd is not the controlling terminal.
SEE ALSO
STANDARDS
The tcgetsid() function conforms to X/Open Portability Guide Issue 4, Version 2 (“XPG4.2”).