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root/i-scream/projects/libstatgrab/src/libstatgrab/user_stats.c

Comparing projects/libstatgrab/src/libstatgrab/user_stats.c (file contents):
Revision 1.2 by tdb, Thu Feb 20 13:19:52 2003 UTC vs.
Revision 1.17 by ats, Wed Jan 21 14:44:22 2004 UTC

#	Line 1 | Line 1
1	<	/*
1	>	/*
2		* i-scream central monitoring system
3	<	* http://www.i-scream.org.uk
4	<	* Copyright (C) 2000-2002 i-scream
3	>	* http://www.i-scream.org
4	>	* Copyright (C) 2000-2004 i-scream
5		*
6	<	* This program is free software; you can redistribute it and/or
7	<	* modify it under the terms of the GNU General Public License
8	<	* as published by the Free Software Foundation; either version 2
9	<	* of the License, or (at your option) any later version.
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 program is distributed in the hope that it will be useful,
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
14	<	* GNU General Public License for more details.
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 General Public License
17	<	* along with this program; if not, write to the Free Software
18	<	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
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	>	* $Id$
22		*/
23
24		#ifdef HAVE_CONFIG_H
25		#include "config.h"
26		#endif
27	<	#include "statgrab.h"
27	>
28		#include <stdlib.h>
29		#include <stdio.h>
30		#include <string.h>
31	<	#ifdef FREEBSD
31	>	#include "statgrab.h"
32	>	#ifdef ALLBSD
33		#include <sys/types.h>
34		#endif
35	+	#ifdef NETBSD
36	+	#include <limits.h>
37	+	#endif
38		#include <utmp.h>
39	+	#ifdef CYGWIN
40	+	#include <sys/unistd.h>
41	+	#endif
42
43	<	#define START_VAL 5
43	>	#ifdef SOLARIS
44	>	#define MAX_LOGIN_NAME_SIZE 8
45	>	#endif
46	>	#if defined(LINUX) || defined(FREEBSD)
47	>	#define MAX_LOGIN_NAME_SIZE UT_NAMESIZE
48	>	#endif
49	>	#ifdef NETBSD
50	>	#define MAX_LOGIN_NAME_SIZE _POSIX_LOGIN_NAME_MAX
51	>	#endif
52	>	#if defined(CYGWIN)
53	>	#define MAX_LOGIN_NAME_SIZE _SC_LOGIN_NAME_MAX
54	>	#endif
55
56	+	#define START_VAL (5*(1+MAX_LOGIN_NAME_SIZE))
57	+
58		user_stat_t *get_user_stats(){
59		int num_users=0;
60
61	<	static user_stat_t user_stat;
62	<	static int watermark=-1;
61	>	static user_stat_t user_stats;
62	>	static int size_of_namelist=-1;
63	>	char *tmp;
64	>	#if defined(SOLARIS) || defined(LINUX) || defined(CYGWIN)
65		struct utmp *entry;
66	+	#endif
67	+	#ifdef ALLBSD
68	+	struct utmp entry;
69	+	FILE *f;
70	+	#endif
71
42	–	name *name_ptr;
43	–
72		/* First case call */
73	<	if (watermark==-1){
74	<	user_stat.name_list=malloc(START_VAL * sizeof *user_stat.name_list);
75	<	if(user_stat.name_list==NULL){
73	>	if (size_of_namelist==-1){
74	>	user_stats.name_list=malloc(START_VAL);
75	>	if(user_stats.name_list==NULL){
76		return NULL;
77		}
78	<	watermark=START_VAL;
78	>	size_of_namelist=START_VAL;
79		}
80
81	+	/* Essentially blank the list, or give it a inital starting string */
82	+	strcpy(user_stats.name_list, "");
83	+
84	+	#if defined(SOLARIS) || defined(LINUX) || defined(CYGWIN)
85		setutent();
86		while((entry=getutent()) != NULL) {
87		if(entry->ut_type==USER_PROCESS) {
88	<	if(num_users>watermark-1){
89	<	name_ptr=user_stat.name_list;
90	<	if((user_stat.name_list=realloc(user_stat.name_list, (watermark*2* sizeof *user_stat.name_list)))==NULL){
91	<	user_stat.name_list=name_ptr;
88	>	if((strlen(user_stats.name_list)+MAX_LOGIN_NAME_SIZE+2) > size_of_namelist){
89	>	tmp=user_stats.name_list;
90	>	user_stats.name_list=realloc(user_stats.name_list, 1+(size_of_namelist*2));
91	>	if(user_stats.name_list==NULL){
92	>	user_stats.name_list=tmp;
93		return NULL;
94		}
95	<	watermark=watermark*2;
95	>	size_of_namelist=1+(size_of_namelist*2);
96		}
97
98	<	strncpy(user_stat.name_list[num_users], entry->ut_user, MAX_LOGIN_NAME_SIZE);
99	<	/* NULL terminate just in case , the size of user_stat.name_list is MAX_LOGIN_NAME_SIZE+1 */
67	<
68	<	user_stat.name_list[num_users][MAX_LOGIN_NAME_SIZE]='\0';
69	<
98	>	strncat(user_stats.name_list, entry->ut_user, MAX_LOGIN_NAME_SIZE);
99	>	strcat(user_stats.name_list, " ");
100		num_users++;
101		}
102		}
103		endutent();
104	<	user_stat.num_entries=num_users;
104	>	#endif
105	>	#ifdef ALLBSD
106	>	if ((f=fopen(_PATH_UTMP, "r")) == NULL){
107	>	return NULL;
108	>	}
109	>	while((fread(&entry, sizeof(entry),1,f)) != 0){
110	>	if (entry.ut_name[0] == '\0') continue;
111	>	if((strlen(user_stats.name_list)+MAX_LOGIN_NAME_SIZE+2) > size_of_namelist){
112	>	tmp=user_stats.name_list;
113	>	user_stats.name_list=realloc(user_stats.name_list, 1+(size_of_namelist*2));
114	>	if(user_stats.name_list==NULL){
115	>	user_stats.name_list=tmp;
116	>	return NULL;
117	>	}
118	>	size_of_namelist=1+(size_of_namelist*2);
119	>
120	>	}
121	>	strncat(user_stats.name_list, entry.ut_name, MAX_LOGIN_NAME_SIZE);
122	>	strcat(user_stats.name_list, " ");
123	>	num_users++;
124	>	}
125	>	fclose(f);
126
127	<	return &user_stat;
127	>	#endif
128	>	/* We want to remove the last " " */
129	>	if(num_users!=0){
130	>	tmp=strrchr(user_stats.name_list, ' ');
131	>	if(tmp!=NULL){
132	>	*tmp='\0';
133	>	user_stats.num_entries=num_users;
134	>	}
135	>	}
136	>
137	>	return &user_stats;
138
139		}

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