NAME    [Toc]    [Back]

     tcgetpgrp - get foreground process group ID

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <unistd.h>

     pid_t
     tcgetpgrp(int fd);

DESCRIPTION    [Toc]    [Back]

     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    [Toc]    [Back]

     If an error occurs, tcgetpgrp 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    [Toc]    [Back]

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

STANDARDS    [Toc]    [Back]

     The tcgetpgrp function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').

BSD                              June 4, 1993                              BSD