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28 .\" @(#)tcsetpgrp.3 8.1 (Berkeley) 6/4/93
29 .\" $FreeBSD: src/lib/libc/gen/tcsetpgrp.3,v 1.6.2.3 2001/12/14 18:33:51 ru Exp $
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37 .Nd set foreground process group ID
44 .Fn tcsetpgrp "int fd" "pid_t pgrp_id"
46 If the process has a controlling terminal, the
48 function sets the foreground process group ID associated with the
51 The terminal device associated with
53 must be the controlling terminal of the calling process and the
54 controlling terminal must be currently associated with the session
55 of the calling process.
58 must be the same as the process group ID of a process in the same
59 session as the calling process.
65 function will fail if:
70 argument is not a valid file descriptor.
76 The calling process does not have a controlling terminal, or the file
79 is not the controlling terminal, or the controlling terminal is no
80 longer associated with the session of the calling process.
84 argument does not match the process group ID of a process in the same
85 session as the calling process.
94 function is expected to be compliant with the