1 /* 2 * Copyright (c) 1989 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #if defined(LIBC_SCCS) && !defined(lint) 19 static char sccsid[] = "@(#)getmntinfo.c 6.2 (Berkeley) 03/06/90"; 20 #endif /* LIBC_SCCS and not lint */ 21 22 #include <sys/types.h> 23 #include <sys/mount.h> 24 25 /* 26 * Return information about mounted filesystems. 27 */ 28 int 29 getmntinfo(mntbufp, flags) 30 struct statfs **mntbufp; 31 int flags; 32 { 33 static struct statfs *mntbuf; 34 static int mntsize, bufsize; 35 36 if (mntsize <= 0 && (mntsize = getfsstat(0, 0, MNT_NOWAIT)) < 0) 37 return (0); 38 if (bufsize > 0 && (mntsize = getfsstat(mntbuf, bufsize, flags)) < 0) 39 return (0); 40 while (bufsize <= mntsize * sizeof(struct statfs)) { 41 if (mntbuf) 42 free(mntbuf); 43 bufsize = (mntsize + 1) * sizeof(struct statfs); 44 if ((mntbuf = (struct statfs *)malloc(bufsize)) == 0) 45 return (0); 46 if ((mntsize = getfsstat(mntbuf, bufsize, flags)) < 0) 47 return (0); 48 } 49 *mntbufp = mntbuf; 50 return (mntsize); 51 } 52