TCGETSID(3) |
FreeBSD Library Functions Manual |
TCGETSID(3) |
NAME
tcgetsid —
get session ID associated with a controlling terminal
LIBRARY
Standard C Library (libc, -lc)
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.
STANDARDS
The
tcgetsid() function conforms to X/Open Portability Guide Issue 4, Version 2 (“XPG4.2”).