1
2 /*
3 * Licensed Materials - Property of IBM
4 *
5 * trousers - An open source TCG Software Stack
6 *
7 * (C) Copyright International Business Machines Corp. 2004, 2005
8 *
9 */
10
11
12 #if defined (__FreeBSD__) || defined (__OpenBSD__) || defined(__NetBSD__) || defined (__APPLE__)
13 #include <sys/param.h>
14 #include <sys/sysctl.h>
15 #include <err.h>
16 #elif (defined (__linux) || defined (linux) || defined(__GLIBC__))
17 #include <utmp.h>
18 #elif (defined (SOLARIS))
19 #include <utmpx.h>
20 #endif
21
22 #include <sys/time.h>
23 #include <stdlib.h>
24 #include <stdio.h>
25 #include <string.h>
26
27 #include "trousers/tss.h"
28 #include "trousers_types.h"
29 #include "tcs_tsp.h"
30 #include "tcs_int_literals.h"
31 #include "capabilities.h"
32 #include "tcsps.h"
33 #include "tcslog.h"
34
35
36 #if (defined (__linux) || defined (linux) || defined(__GLIBC__))
37 MUTEX_DECLARE_INIT(utmp_lock);
38
39 char
platform_get_runlevel()40 platform_get_runlevel()
41 {
42 char runlevel;
43 struct utmp ut, save, *next = NULL;
44 struct timeval tv;
45 int flag = 0, counter = 0;
46
47 MUTEX_LOCK(utmp_lock);
48
49 memset(&ut, 0, sizeof(struct utmp));
50 memset(&save, 0, sizeof(struct utmp));
51 memset(&tv, 0, sizeof(struct timeval));
52
53 ut.ut_type = RUN_LVL;
54
55 setutent();
56 next = getutid(&ut);
57
58 while (next != NULL) {
59 if (next->ut_tv.tv_sec > tv.tv_sec) {
60 memcpy(&save, next, sizeof(*next));
61 flag = 1;
62 } else if (next->ut_tv.tv_sec == tv.tv_sec) {
63 if (next->ut_tv.tv_usec > tv.tv_usec) {
64 memcpy(&save, next, sizeof(*next));
65 flag = 1;
66 }
67 }
68
69 counter++;
70 next = getutid(&ut);
71 }
72
73 if (flag) {
74 //printf("prev_runlevel=%c, runlevel=%c\n", save.ut_pid / 256, save.ut_pid % 256);
75 runlevel = save.ut_pid % 256;
76 } else {
77 //printf("unknown\n");
78 runlevel = 'u';
79 }
80
81 MUTEX_UNLOCK(utmp_lock);
82
83 return runlevel;
84 }
85 #elif defined (__FreeBSD__) || defined (__OpenBSD__) || defined(__NetBSD__) || defined (__APPLE__)
86
87 char
platform_get_runlevel()88 platform_get_runlevel()
89 {
90 int mib[2], rlevel = -1;
91 size_t len;
92
93 mib[0] = CTL_KERN;
94 mib[1] = KERN_SECURELVL;
95
96 len = sizeof(rlevel);
97 if (sysctl(mib,2,&rlevel,&len, NULL,0) == -1) {
98 err(1,"Could not get runlevel");
99 return 'u';
100 }
101 #if defined (__OpenBSD__)
102 if (rlevel == 0)
103 #else
104 if (rlevel == -1)
105 #endif
106 return 's';
107
108 return rlevel + '0';
109 }
110 #elif (defined (SOLARIS))
111
112 MUTEX_DECLARE_INIT(utmp_lock);
113 char
platform_get_runlevel()114 platform_get_runlevel()
115 {
116 char runlevel = 'u'; /* unknown run level */
117 struct utmpx ut, *utp = NULL;
118
119 MUTEX_LOCK(utmp_lock);
120
121 memset(&ut, 0, sizeof(ut));
122 ut.ut_type = RUN_LVL;
123
124 setutxent();
125 utp = getutxid(&ut);
126 if (utp->ut_type == RUN_LVL &&
127 sscanf(utp->ut_line, "run-level %c", &runlevel) != 1)
128 runlevel = 'u';
129 endutxent();
130
131 MUTEX_UNLOCK(utmp_lock);
132
133 return runlevel;
134 }
135 #endif
136