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NetBSD 6.1.5 - man page for tcgetpgrp (netbsd section 3)

TCGETPGRP(3)			   BSD Library Functions Manual 		     TCGETPGRP(3)

NAME
     tcgetpgrp -- get foreground process group ID

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #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 underly-
			ing terminal device represented by fd is not the controlling terminal.

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

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

BSD					   June 4, 1993 				      BSD


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