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 1.18 2004/04/07 21:08:40 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_with_errno(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_with_errno(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_with_errno(SG_ERROR_SYSCTL,
                                        "CTL_KERN.KERN_BOOTTIME");
                return NULL;
        }
        time(&curtime);
        general_stat.uptime=curtime-boottime.tv_sec;
#endif

        return &general_stat;
        
}
Revision:	1.19
Committed:	Sun Jul 18 21:30:11 2004 UTC (19 years, 10 months ago) by ats
Content type:	text/plain
Branch:	MAIN
CVS Tags:	LIBSTATGRAB_0_10_3, LIBSTATGRAB_0_10_2, LIBSTATGRAB_0_10_1
Changes since 1.18:	+5 -4 lines
Log Message:	Use sg_set_error_with_errno whenever errno's valid. Change the one user of SG_ERROR_ENOENT to SG_ERROR_SYSCTL instead (since that's what it should have been).
#	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	ats	1.19	* $Id: os_info.c,v 1.18 2004/04/07 21:08:40 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	ats	1.19	sg_set_error_with_errno(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	ats	1.19	sg_set_error_with_errno(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	ats	1.19	sg_set_error_with_errno(SG_ERROR_SYSCTL,
124			"CTL_KERN.KERN_BOOTTIME");
125	pajs	1.5	return NULL;
126			}
127			time(&curtime);
128			general_stat.uptime=curtime-boottime.tv_sec;
129	pajs	1.4	#endif
130	pajs	1.1
131			return &general_stat;
132
133			}