tcsetpgrp(3C)

NAME

     tcsetpgrp - set foreground process group ID

SYNOPSIS

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

     int tcsetpgrp(int fildes, pid_t pgid_id);

DESCRIPTION

     If the process has a controlling terminal, tcsetpgrp()  will
     set the foreground process group ID associated with the ter-
     minal to pgid_id. The file associated with  fildes  must  be
     the controlling terminal of the calling process and the con-
     trolling terminal must be currently associated with the ses-
     sion of the calling process. The value of pgid_id must match
     a process group ID of a process in the same session  as  the
     calling process.

RETURN VALUES

     Upon successful completion, 0 is returned. Otherwise, -1  is
     returned and errno is set to indicate the error.

ERRORS

     The tcsetpgrp() function will fail if:

     EBADF The fildes argument is not a valid file descriptor.

     EINVAL
           This implementation does not support the value in  the
           pgid_id argument.

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

     EIO   The process is not ignoring or holding SIGTTOU and  is
           a member of an orphaned process group.

     EPERM The value of pgid_id does not match the process  group
           ID  of  a  process  in the same session as the calling
           process.

ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

     ______________________________________________________________
    |       ATTRIBUTE TYPE        |        ATTRIBUTE VALUE        |
    |_____________________________|_______________________________|
    | MT-Level                    | MT-Safe, and Async-Signal-Safe|
    |_____________________________|_______________________________|

SEE ALSO

     tcgetpgrp(3C), attributes(5), termio(7I)