1 /*-
2 * Copyright (c) 2002, 2003 Greg Lehey
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * This software is provided by the author ``as is'' and any express
15 * or implied warranties, including, but not limited to, the implied
16 * warranties of merchantability and fitness for a particular purpose
17 * are disclaimed. In no event shall the author be liable for any
18 * direct, indirect, incidental, special, exemplary, or consequential
19 * damages (including, but not limited to, procurement of substitute
20 * goods or services; loss of use, data, or profits; or business
21 * interruption) however caused and on any theory of liability,
22 * whether in contract, strict liability, or tort (including
23 * negligence or otherwise) arising in any way out of the use of this
24 * software, even if advised of the possibility of such damage.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <sys/types.h>
31 #include <err.h>
32 #include <inttypes.h>
33 #include <limits.h>
34 #include <stdio.h>
35 #include <string.h>
36
37 #include "asf.h"
38
39 /*
40 * Get the linker file list from kldstat(8) output.
41 * The "run" flag tells if kldstat(8) should run now.
42 * Of course, kldstat(1) can run in a live system only, but its output
43 * can be saved beforehand and fed to this function later via stdin.
44 */
45 void
asf_prog(int run)46 asf_prog(int run)
47 {
48 char buf[LINE_MAX];
49 char *token[MAXTOKEN];
50 char *endp;
51 FILE *kldstat;
52 caddr_t base;
53 int tokens;
54
55 if (run) {
56 if ((kldstat = popen("kldstat", "r")) == NULL)
57 err(2, "can't start kldstat");
58 } else
59 kldstat = stdin;
60
61 while (fgets(buf, sizeof(buf), kldstat)) {
62 /* Skip header line and main kernel file */
63 if (buf[0] == 'I' || strstr(buf, KERNFILE))
64 continue;
65 tokens = tokenize(buf, token, MAXTOKEN);
66 if (tokens < 4)
67 continue;
68 base = (caddr_t)(uintptr_t)strtoumax(token[2], &endp, 16);
69 if (endp == NULL || *endp != '\0')
70 continue;
71 kfile_add(token[4], base);
72 }
73 }
74