tcsetpgrp man page on BSDOS

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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, pid_t pgrp_id);

DESCRIPTION
     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 cur-
     rently 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
     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 termi-
		   nal, 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
     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/OS			 June 4, 1993				     1
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