NAME    [Toc]    [Back]

     tcsetpgrp - set foreground process group ID

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <unistd.h>

     int
     tcsetpgrp(int fd, pid_t pgrp_id);

DESCRIPTION    [Toc]    [Back]

     If the process has a controlling terminal, the tcsetpgrp function sets
     the foreground process group ID associated with the terminal device to
     pgrp_id.  The terminal device associated with fd must be the controlling
     terminal of the calling process and the controlling terminal must be currently
 associated with the session of the calling process.  The value of
     pgrp_id 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    [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.

     [EINVAL]           An invalid value of pgrp_id was specified.

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


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

SEE ALSO    [Toc]    [Back]

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

STANDARDS    [Toc]    [Back]

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

BSD                              June 4, 1993                              BSD