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
#	User	Rev	Content
1	tdb	1.12	/*
2	tdb	1.16	* i-scream libstatgrab
3	tdb	1.6	* http://www.i-scream.org
4	tdb	1.12	* Copyright (C) 2000-2004 i-scream
5	pajs	1.1	*
6	tdb	1.12	* 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	pajs	1.1	*
11	tdb	1.12	* This library is distributed in the hope that it will be useful,
12	pajs	1.1	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	tdb	1.12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14			* Lesser General Public License for more details.
15	pajs	1.1	*
16	tdb	1.12	* 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	tdb	1.13	*
21	tdb	1.18	* $Id: os_info.c,v 1.17 2004/04/07 14:53:40 tdb Exp $
22	pajs	1.1	*/
23
24			#ifdef HAVE_CONFIG_H
25			#include "config.h"
26			#endif
27
28	tdb	1.3	#include <sys/utsname.h>
29	pajs	1.1	#include "statgrab.h"
30	ats	1.9	#include <stdlib.h>
31	pajs	1.1	#ifdef SOLARIS
32			#include <kstat.h>
33			#include <time.h>
34			#endif
35	ats	1.11	#if defined(LINUX) \|\| defined(CYGWIN)
36	pajs	1.4	#include <stdio.h>
37			#endif
38	ats	1.9	#ifdef ALLBSD
39	tdb	1.14	#if defined(FREEBSD) \|\| defined(DFBSD)
40	pajs	1.5	#include <sys/types.h>
41			#include <sys/sysctl.h>
42	ats	1.9	#else
43			#include <sys/param.h>
44			#include <sys/sysctl.h>
45			#endif
46	pajs	1.5	#include <time.h>
47			#include <sys/time.h>
48			#endif
49	pajs	1.1
50	ats	1.15	sg_host_info *sg_get_host_info(){
51	pajs	1.1
52	ats	1.15	static sg_host_info general_stat;
53	pajs	1.4	static struct utsname os;
54	pajs	1.1
55	pajs	1.4	#ifdef SOLARIS
56	pajs	1.1	time_t boottime,curtime;
57			kstat_ctl_t *kc;
58			kstat_t *ksp;
59			kstat_named_t *kn;
60	pajs	1.4	#endif
61	ats	1.11	#if defined(LINUX) \|\| defined(CYGWIN)
62	pajs	1.4	FILE *f;
63			#endif
64	ats	1.9	#ifdef ALLBSD
65			int mib[2];
66	pajs	1.5	struct timeval boottime;
67			time_t curtime;
68			size_t size;
69			#endif
70	pajs	1.1
71			if((uname(&os)) < 0){
72	tdb	1.18	sg_set_error(SG_ERROR_UNAME, NULL);
73	pajs	1.1	return NULL;
74			}
75
76			general_stat.os_name = os.sysname;
77	tdb	1.17	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	pajs	1.1
82			/* get uptime */
83	pajs	1.4	#ifdef SOLARIS
84	pajs	1.1	if ((kc = kstat_open()) == NULL) {
85	tdb	1.18	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
86	pajs	1.1	return NULL;
87			}
88			if((ksp=kstat_lookup(kc, "unix", -1, "system_misc"))==NULL){
89	tdb	1.18	sg_set_error(SG_ERROR_KSTAT_LOOKUP, "unix,-1,system_misc");
90	pajs	1.1	return NULL;
91			}
92			if (kstat_read(kc, ksp, 0) == -1) {
93	tdb	1.18	sg_set_error(SG_ERROR_KSTAT_READ, NULL);
94	pajs	1.1	return NULL;
95			}
96			if((kn=kstat_data_lookup(ksp, "boot_time")) == NULL){
97	tdb	1.18	sg_set_error(SG_ERROR_KSTAT_DATA_LOOKUP, "boot_time");
98	pajs	1.1	return NULL;
99			}
100			boottime=(kn->value.ui32);
101	pajs	1.2
102			kstat_close(kc);
103	pajs	1.1
104			time(&curtime);
105			general_stat.uptime = curtime - boottime;
106	pajs	1.4	#endif
107	ats	1.11	#if defined(LINUX) \|\| defined(CYGWIN)
108	pajs	1.4	if ((f=fopen("/proc/uptime", "r")) == NULL) {
109	tdb	1.18	sg_set_error(SG_ERROR_OPEN, "/proc/uptime");
110	pajs	1.4	return NULL;
111			}
112			if((fscanf(f,"%lu %*d",&general_stat.uptime)) != 1){
113	tdb	1.18	sg_set_error(SG_ERROR_PARSE, NULL);
114	pajs	1.4	return NULL;
115			}
116			fclose(f);
117	pajs	1.5	#endif
118	ats	1.9	#ifdef ALLBSD
119			mib[0] = CTL_KERN;
120			mib[1] = KERN_BOOTTIME;
121	ats	1.8	size = sizeof boottime;
122	ats	1.9	if (sysctl(mib, 2, &boottime, &size, NULL, 0) < 0){
123	tdb	1.18	sg_set_error(SG_ERROR_SYSCTL, "CTL_KERN.KERN_BOOTTIME");
124	pajs	1.5	return NULL;
125			}
126			time(&curtime);
127			general_stat.uptime=curtime-boottime.tv_sec;
128	pajs	1.4	#endif
129	pajs	1.1
130			return &general_stat;
131
132			}