tcgetpgrp(3) - NetBSD Manual Pages

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TCGETPGRP(3)              NetBSD Programmer's Manual              TCGETPGRP(3)


NAME

     tcgetpgrp - get foreground process group ID


SYNOPSIS

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

     pid_t
     tcgetpgrp(int fd);


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 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

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


STANDARDS

     The tcgetpgrp function conforms to IEEE Std1003.1-1990 (``POSIX'').

4.4BSD                          March 29, 1992                               1