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).
#	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 1.18 2004/04/07 21:08:40 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_with_errno(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_with_errno(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_with_errno(SG_ERROR_SYSCTL,
124	"CTL_KERN.KERN_BOOTTIME");
125	return NULL;
126	}
127	time(&curtime);
128	general_stat.uptime=curtime-boottime.tv_sec;
129	#endif
130
131	return &general_stat;
132
133	}