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e5afe6d2 KM |
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 6.1 (Berkeley) %G%"; | |
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) | |
30 | struct statfs **mntbufp; | |
31 | { | |
32 | static struct statfs *mntbuf; | |
33 | static int mntsize, bufsize; | |
34 | ||
35 | if (mntsize <= 0 && (mntsize = getfsstat(0, 0)) < 0) | |
36 | return (0); | |
37 | if (bufsize > 0 && (mntsize = getfsstat(mntbuf, bufsize)) < 0) | |
38 | return (0); | |
39 | while (bufsize <= mntsize * sizeof(struct statfs)) { | |
40 | if (mntbuf) | |
41 | free(mntbuf); | |
42 | bufsize = (mntsize + 1) * sizeof(struct statfs); | |
43 | if ((mntbuf = (struct statfs *)malloc(bufsize)) == 0) | |
44 | return (0); | |
45 | if ((mntsize = getfsstat(mntbuf, bufsize)) < 0) | |
46 | return (0); | |
47 | } | |
48 | *mntbufp = mntbuf; | |
49 | return (mntsize); | |
50 | } |