TCSETPGRP(3)                BSD Programmer's Manual               TCSETPGRP(3)

NAME
     tcsetpgrp - set foreground process group ID

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

     int
     tcsetpgrp(int fd, pidt pgrpid)

DESCRIPTION
     If the process has a controlling terminal, the tcsetpgrp function sets
     the foreground process group ID associated with the terminal device to
     pgrpid. The terminal device associated with fd must be the controlling
     terminal of the calling process and the controlling terminal must be cur-
     rently associated with the session of the calling process.  The value of
     pgrpid must be the same as the process group ID of a process in the same
     session as the calling process.

     Upon successful completion, tcsetpgrp returns a value of zero.

ERRORS
     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.

     [EINVAL]      An invalid value of pgrpid was specified.

     [ENOTTY]      The calling process does not have a controlling terminal,
                   or the file represented by fd is not the controlling termi-
                   nal, or the controlling terminal is no longer associated
                   with the session of the calling process.

     [EPERM]       The pgrpid argument does not match the process group ID of
                   a process in the same session as the calling process.

SEE ALSO
     setpgid(3),  setsid(2),  tcgetpgrp(3)

STANDARDS
     The tcsetpgprp function is expected to be compliant with the IEEE
     Std1003.1-1988 (``POSIX'') specification.

BSDI BSD/386                    March 26, 1993                               1