TCGETPGRP(3)						   BSD Library Functions Manual 					      TCGETPGRP(3)

NAME

     tcgetpgrp -- get foreground process group ID

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <unistd.h>

     pid_t
     tcgetpgrp(int fildes);

DESCRIPTION

     The tcgetpgrp() function returns the value of the process group ID of the foreground process group associated with the terminal device.  If
     there is no foreground process group, tcgetpgrp() returns an invalid process ID.

ERRORS

     If an error occurs, tcgetpgrp() returns -1 and the global variable errno is set to indicate the error, as follows:

     [EBADF]		The fildes argument is not a valid file descriptor.

     [ENOTTY]		The calling process does not have a controlling terminal or the underlying terminal device represented by fildes is not
			the controlling terminal.

LEGACY SYNOPSIS

     #include <sys/types.h>
     #include <unistd.h>

     The include file <sys/types.h> is necessary.

SEE ALSO

     setpgid(2), setsid(2), tcsetpgrp(3), compat(5)

STANDARDS

     The tcgetpgrp() function is expected to be compliant with the IEEE Std 1003.1-1988 (``POSIX.1'') specification.

BSD
								   June 4, 1993 							       BSD