tcgetpgrp(3) [mojave man page]

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

tcgetpgrp(3C)						   Standard C Library Functions 					     tcgetpgrp(3C)

NAME

       tcgetpgrp - get foreground process group ID

SYNOPSIS

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

       pid_t tcgetpgrp(int fildes);

DESCRIPTION

       The tcgetpgrp() function will return the value of the process group ID of the foreground process group associated with the terminal.

       If  there is no foreground process group, tcgetpgrp() returns a value greater than 1 that does not match the process group ID of any exist-
       ing process group.

       The tcgetpgrp() function is allowed from a process that is a member of a background process group; however, the information may	be  subse-
       quently changed by a process that is a member of a foreground process group.

RETURN VALUES

       Upon  successful  completion, tcgetpgrp() returns the value of the process group ID of the foreground process associated with the terminal.
       Otherwise, -1 is returned and errno is set to indicate the error.

ERRORS

       The tcgetpgrp() function will fail if:

       EBADF	 The fildes argument is not a valid file descriptor.

       ENOTTY	 The calling process does not have a controlling terminal, or the file is not the controlling terminal.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-------------------------------+
       |      ATTRIBUTE TYPE	     |	     ATTRIBUTE VALUE	     |
       +-----------------------------+-------------------------------+
       |Interface Stability	     |Standard			     |
       +-----------------------------+-------------------------------+
       |MT-Level		     |MT-Safe, and Async-Signal-Safe |
       +-----------------------------+-------------------------------+

SEE ALSO

       setpgid(2), setsid(2), tcsetpgrp(3C), attributes(5), standards(5), termio(7I)

SunOS 5.11							    14 Aug 2002 						     tcgetpgrp(3C)