2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * Edward Sze-Tyan Wang.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 static const char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/6/93";
40 #include <sys/types.h>
51 #include <libcasper.h>
52 #include <casper/cap_fileargs.h>
57 ierr(const char *fname)
70 * Print `len' bytes from the file associated with `mip', starting at
71 * absolute file offset `startoff'. May move map window.
74 mapprint(struct mapinfo *mip, off_t startoff, off_t len)
79 if (startoff < mip->mapoff || startoff >= mip->mapoff +
81 if (maparound(mip, startoff) != 0)
84 n = (mip->mapoff + mip->maplen) - startoff;
87 WR(mip->start + (startoff - mip->mapoff), n);
95 * Move the map window so that it contains the byte at absolute file
96 * offset `offset'. The start of the map window will be TAILMAPLEN
100 maparound(struct mapinfo *mip, off_t offset)
103 if (mip->start != NULL && munmap(mip->start, mip->maplen) != 0)
106 mip->mapoff = offset & ~((off_t)TAILMAPLEN - 1);
107 mip->maplen = TAILMAPLEN;
108 if ((off_t)mip->maplen > mip->maxoff - mip->mapoff)
109 mip->maplen = mip->maxoff - mip->mapoff;
110 if (mip->maplen <= 0)
112 if ((mip->start = mmap(NULL, mip->maplen, PROT_READ, MAP_SHARED,
113 mip->fd, mip->mapoff)) == MAP_FAILED)
120 * Print the file name without stdio buffering.
123 printfn(const char *fn, int print_nl)