src/libstatgrab/os_info.c

/*
 * i-scream libstatgrab
 * http://www.i-scream.org
 * Copyright (C) 2000-2004 i-scream
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307 USA
 *
 * $Id: os_info.c,v 1.17 2004/04/07 14:53:40 tdb Exp $
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <sys/utsname.h>
#include "statgrab.h"
#include <stdlib.h>
#ifdef SOLARIS
#include <kstat.h>
#include <time.h>
#endif
#if defined(LINUX) || defined(CYGWIN)
#include <stdio.h>
#endif
#ifdef ALLBSD
#if defined(FREEBSD) || defined(DFBSD)
#include <sys/types.h>
#include <sys/sysctl.h>
#else
#include <sys/param.h>
#include <sys/sysctl.h>
#endif
#include <time.h>
#include <sys/time.h>
#endif

sg_host_info *sg_get_host_info(){

        static sg_host_info general_stat;       
        static struct utsname os;

#ifdef SOLARIS
        time_t boottime,curtime;
        kstat_ctl_t *kc;
        kstat_t *ksp;
        kstat_named_t *kn;
#endif
#if defined(LINUX) || defined(CYGWIN)
        FILE *f;
#endif
#ifdef ALLBSD
        int mib[2];
        struct timeval boottime;
        time_t curtime;
        size_t size;
#endif

        if((uname(&os)) < 0){
                sg_set_error(SG_ERROR_UNAME, NULL);
                return NULL;
        }
        
        general_stat.os_name = os.sysname;
        general_stat.os_release = os.release;
        general_stat.os_version = os.version;
        general_stat.platform = os.machine;
        general_stat.hostname = os.nodename;

        /* get uptime */
#ifdef SOLARIS
        if ((kc = kstat_open()) == NULL) {
                sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
                return NULL;
        }
        if((ksp=kstat_lookup(kc, "unix", -1, "system_misc"))==NULL){
                sg_set_error(SG_ERROR_KSTAT_LOOKUP, "unix,-1,system_misc");
                return NULL;
        }
        if (kstat_read(kc, ksp, 0) == -1) {
                sg_set_error(SG_ERROR_KSTAT_READ, NULL);
                return NULL;
        }
        if((kn=kstat_data_lookup(ksp, "boot_time")) == NULL){
                sg_set_error(SG_ERROR_KSTAT_DATA_LOOKUP, "boot_time");
                return NULL;
        }
        boottime=(kn->value.ui32);

        kstat_close(kc);

        time(&curtime);
        general_stat.uptime = curtime - boottime;
#endif
#if defined(LINUX) || defined(CYGWIN)
        if ((f=fopen("/proc/uptime", "r")) == NULL) {
                sg_set_error(SG_ERROR_OPEN, "/proc/uptime");
                return NULL;
        }
        if((fscanf(f,"%lu %*d",&general_stat.uptime)) != 1){
                sg_set_error(SG_ERROR_PARSE, NULL);
                return NULL;
        }
        fclose(f);
#endif
#ifdef ALLBSD
        mib[0] = CTL_KERN;
        mib[1] = KERN_BOOTTIME;
        size = sizeof boottime;
        if (sysctl(mib, 2, &boottime, &size, NULL, 0) < 0){
                sg_set_error(SG_ERROR_SYSCTL, "CTL_KERN.KERN_BOOTTIME");
                return NULL;
        }
        time(&curtime);
        general_stat.uptime=curtime-boottime.tv_sec;
#endif

        return &general_stat;
        
}
Revision:	1.18
Committed:	Wed Apr 7 21:08:40 2004 UTC (20 years, 1 month ago) by tdb
Content type:	text/plain
Branch:	MAIN
CVS Tags:	LIBSTATGRAB_0_10
Changes since 1.17:	+9 -1 lines
Log Message:	The rest of the error handling stuff (except the vector code). I've been extremely unimaginative with the string names in error.c, but they're all in one place so much easier to tidy up. I'm also beginning to wonder if we actually needed an SG_ERROR_SYSTEM_CALL to indicate some call into the system failed - because the majority of our errors are those :-) Still to do, then: - vector code - better string names in error.c - deal with arg string in some way - make use of the error status in statgrab/saidar/examples
#	Content
1	/*
2	* i-scream libstatgrab
3	* http://www.i-scream.org
4	* Copyright (C) 2000-2004 i-scream
5	*
6	* This library is free software; you can redistribute it and/or
7	* modify it under the terms of the GNU Lesser General Public
8	* License as published by the Free Software Foundation; either
9	* version 2.1 of the License, or (at your option) any later version.
10	*
11	* This library is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14	* Lesser General Public License for more details.
15	*
16	* You should have received a copy of the GNU Lesser General Public
17	* License along with this library; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19	* 02111-1307 USA
20	*
21	* $Id: os_info.c,v 1.17 2004/04/07 14:53:40 tdb Exp $
22	*/
23
24	#ifdef HAVE_CONFIG_H
25	#include "config.h"
26	#endif
27
28	#include <sys/utsname.h>
29	#include "statgrab.h"
30	#include <stdlib.h>
31	#ifdef SOLARIS
32	#include <kstat.h>
33	#include <time.h>
34	#endif
35	#if defined(LINUX) \|\| defined(CYGWIN)
36	#include <stdio.h>
37	#endif
38	#ifdef ALLBSD
39	#if defined(FREEBSD) \|\| defined(DFBSD)
40	#include <sys/types.h>
41	#include <sys/sysctl.h>
42	#else
43	#include <sys/param.h>
44	#include <sys/sysctl.h>
45	#endif
46	#include <time.h>
47	#include <sys/time.h>
48	#endif
49
50	sg_host_info *sg_get_host_info(){
51
52	static sg_host_info general_stat;
53	static struct utsname os;
54
55	#ifdef SOLARIS
56	time_t boottime,curtime;
57	kstat_ctl_t *kc;
58	kstat_t *ksp;
59	kstat_named_t *kn;
60	#endif
61	#if defined(LINUX) \|\| defined(CYGWIN)
62	FILE *f;
63	#endif
64	#ifdef ALLBSD
65	int mib[2];
66	struct timeval boottime;
67	time_t curtime;
68	size_t size;
69	#endif
70
71	if((uname(&os)) < 0){
72	sg_set_error(SG_ERROR_UNAME, NULL);
73	return NULL;
74	}
75
76	general_stat.os_name = os.sysname;
77	general_stat.os_release = os.release;
78	general_stat.os_version = os.version;
79	general_stat.platform = os.machine;
80	general_stat.hostname = os.nodename;
81
82	/* get uptime */
83	#ifdef SOLARIS
84	if ((kc = kstat_open()) == NULL) {
85	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
86	return NULL;
87	}
88	if((ksp=kstat_lookup(kc, "unix", -1, "system_misc"))==NULL){
89	sg_set_error(SG_ERROR_KSTAT_LOOKUP, "unix,-1,system_misc");
90	return NULL;
91	}
92	if (kstat_read(kc, ksp, 0) == -1) {
93	sg_set_error(SG_ERROR_KSTAT_READ, NULL);
94	return NULL;
95	}
96	if((kn=kstat_data_lookup(ksp, "boot_time")) == NULL){
97	sg_set_error(SG_ERROR_KSTAT_DATA_LOOKUP, "boot_time");
98	return NULL;
99	}
100	boottime=(kn->value.ui32);
101
102	kstat_close(kc);
103
104	time(&curtime);
105	general_stat.uptime = curtime - boottime;
106	#endif
107	#if defined(LINUX) \|\| defined(CYGWIN)
108	if ((f=fopen("/proc/uptime", "r")) == NULL) {
109	sg_set_error(SG_ERROR_OPEN, "/proc/uptime");
110	return NULL;
111	}
112	if((fscanf(f,"%lu %*d",&general_stat.uptime)) != 1){
113	sg_set_error(SG_ERROR_PARSE, NULL);
114	return NULL;
115	}
116	fclose(f);
117	#endif
118	#ifdef ALLBSD
119	mib[0] = CTL_KERN;
120	mib[1] = KERN_BOOTTIME;
121	size = sizeof boottime;
122	if (sysctl(mib, 2, &boottime, &size, NULL, 0) < 0){
123	sg_set_error(SG_ERROR_SYSCTL, "CTL_KERN.KERN_BOOTTIME");
124	return NULL;
125	}
126	time(&curtime);
127	general_stat.uptime=curtime-boottime.tv_sec;
128	#endif
129
130	return &general_stat;
131
132	}