c1920558b3
- Move CSRG IDs into __SCCSID(). - When a file has been copied, consistently use 'From: <tag>' for strings referencing the version of the source file copied from in the license block comment. - Some of the 'From:' tags were using $FreeBSD$ that was being expanded on each checkout. Fix those to hardcode the FreeBSD tag from the file that was copied at the time of the copy. - When multiple strings are present list them in "chronological" order, so CSRG (__SCCSID) before FreeBSD (__FBSDID). If a file came from OtherBSD and contains a CSRG ID from the OtherBSD file, use the order CSRG -> OtherBSD -> FreeBSD. Reviewed by: imp Differential Revision: https://reviews.freebsd.org/D15831
71 lines
2.6 KiB
C
71 lines
2.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__SCCSID("@(#)getmntinfo.c 8.1 (Berkeley) 6/4/93");
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/ucred.h>
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#include <sys/mount.h>
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#include <stdlib.h>
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#define MAX_TRIES 3
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#define SCALING_FACTOR 2
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/*
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* Return information about mounted filesystems.
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*/
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int
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getmntinfo(struct statfs **mntbufp, int mode)
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{
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static struct statfs *mntbuf;
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static int mntsize;
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static long bufsize;
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unsigned tries = 0;
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if (mntsize <= 0 && (mntsize = getfsstat(0, 0, MNT_NOWAIT)) < 0)
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return (0);
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if (bufsize > 0 && (mntsize = getfsstat(mntbuf, bufsize, mode)) < 0)
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return (0);
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while (tries++ < MAX_TRIES && bufsize <= mntsize * sizeof(*mntbuf)) {
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bufsize = (mntsize * SCALING_FACTOR) * sizeof(*mntbuf);
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if ((mntbuf = reallocf(mntbuf, bufsize)) == NULL)
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return (0);
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if ((mntsize = getfsstat(mntbuf, bufsize, mode)) < 0)
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return (0);
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}
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*mntbufp = mntbuf;
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if (mntsize > (bufsize / sizeof(*mntbuf)))
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return (bufsize / sizeof(*mntbuf));
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return (mntsize);
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}
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