getmntinfo.c revision 1.4
1 1.1 cgd /* 2 1.1 cgd * Copyright (c) 1989 The Regents of the University of California. 3 1.1 cgd * All rights reserved. 4 1.1 cgd * 5 1.1 cgd * Redistribution and use in source and binary forms, with or without 6 1.1 cgd * modification, are permitted provided that the following conditions 7 1.1 cgd * are met: 8 1.1 cgd * 1. Redistributions of source code must retain the above copyright 9 1.1 cgd * notice, this list of conditions and the following disclaimer. 10 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 11 1.1 cgd * notice, this list of conditions and the following disclaimer in the 12 1.1 cgd * documentation and/or other materials provided with the distribution. 13 1.1 cgd * 3. All advertising materials mentioning features or use of this software 14 1.1 cgd * must display the following acknowledgement: 15 1.1 cgd * This product includes software developed by the University of 16 1.1 cgd * California, Berkeley and its contributors. 17 1.1 cgd * 4. Neither the name of the University nor the names of its contributors 18 1.1 cgd * may be used to endorse or promote products derived from this software 19 1.1 cgd * without specific prior written permission. 20 1.1 cgd * 21 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 1.1 cgd * SUCH DAMAGE. 32 1.1 cgd */ 33 1.1 cgd 34 1.1 cgd #if defined(LIBC_SCCS) && !defined(lint) 35 1.3 jtc /*static char *sccsid = "from: @(#)getmntinfo.c 6.4 (Berkeley) 2/23/91";*/ 36 1.4 cgd static char *rcsid = "$Id: getmntinfo.c,v 1.4 1994/06/12 22:52:03 cgd Exp $"; 37 1.1 cgd #endif /* LIBC_SCCS and not lint */ 38 1.1 cgd 39 1.4 cgd #include <sys/param.h> 40 1.1 cgd #include <sys/mount.h> 41 1.1 cgd #include <stdlib.h> 42 1.1 cgd 43 1.1 cgd /* 44 1.1 cgd * Return information about mounted filesystems. 45 1.1 cgd */ 46 1.1 cgd int 47 1.1 cgd getmntinfo(mntbufp, flags) 48 1.1 cgd struct statfs **mntbufp; 49 1.1 cgd int flags; 50 1.1 cgd { 51 1.1 cgd static struct statfs *mntbuf; 52 1.1 cgd static int mntsize; 53 1.1 cgd static long bufsize; 54 1.1 cgd 55 1.1 cgd if (mntsize <= 0 && (mntsize = getfsstat(0, 0, MNT_NOWAIT)) < 0) 56 1.1 cgd return (0); 57 1.1 cgd if (bufsize > 0 && (mntsize = getfsstat(mntbuf, bufsize, flags)) < 0) 58 1.1 cgd return (0); 59 1.1 cgd while (bufsize <= mntsize * sizeof(struct statfs)) { 60 1.1 cgd if (mntbuf) 61 1.1 cgd free(mntbuf); 62 1.1 cgd bufsize = (mntsize + 1) * sizeof(struct statfs); 63 1.1 cgd if ((mntbuf = (struct statfs *)malloc(bufsize)) == 0) 64 1.1 cgd return (0); 65 1.1 cgd if ((mntsize = getfsstat(mntbuf, bufsize, flags)) < 0) 66 1.1 cgd return (0); 67 1.1 cgd } 68 1.1 cgd *mntbufp = mntbuf; 69 1.1 cgd return (mntsize); 70 1.1 cgd } 71
Indexes created Mon Sep 22 13:09:51 GMT 2025