mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
/*
|
|
* The new sysinstall program.
|
|
*
|
|
* This is probably the last attempt in the `sysinstall' line, the next
|
|
* generation being slated for what's essentially a complete rewrite.
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
* Copyright (c) 1997 FreeBSD, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer,
|
|
* verbatim and that no modifications are made prior to this
|
|
* point in the file.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY PAUL TRAINA ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL PAUL TRAINA OR HIS KILLER RATS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
/* The structure */
|
|
typedef struct _qelement {
|
|
struct _qelement *q_forw;
|
|
struct _qelement *q_back;
|
|
} qelement;
|
|
|
|
#define INITQUE(Xhead) { \
|
|
(Xhead).q_forw = &(Xhead); \
|
|
(Xhead).q_back = &(Xhead); \
|
|
}
|
|
|
|
#define EMPTYQUE(Xhead) \
|
|
((Xhead).q_forw == &(Xhead))
|
|
|
|
#define INSQUEUE(elem, pred) { \
|
|
register qelement *Xe = (qelement *) (elem); \
|
|
register qelement *Xp = (qelement *) (pred); \
|
|
Xp->q_forw = (Xe->q_forw = (Xe->q_back = Xp)->q_forw)->q_back = Xe; \
|
|
}
|
|
|
|
#define REMQUE(elem) { \
|
|
register qelement *Xe = (qelement *) (elem); \
|
|
(Xe->q_back->q_forw = Xe->q_forw)->q_back = Xe->q_back; \
|
|
}
|