plugins/linux/linux.c

#include <stdio.h>
#include <stdlib.h>
#include "ukcprog.h"
#include <string.h>
#include <unistd.h>
#include <sys/utsname.h>
#include <sys/vfs.h>
#include <utmp.h>
#include <pwd.h>

int die()
{
   exit (1);
}

void getLoadAv()
{
   FILE *f;
   char *loadavg;
   char *load_p;
      
   if ((f=fopen("/proc/loadavg", "r" ))==NULL)
     {
        errf("Failed to open load averages (%m)");
        die();
     }
   
   
   if ((loadavg=fpgetline(f)) == NULL)
     {
        errf("Failed to read any data for load averages (%m)");
        die();
     }
   
   
   if ((fclose(f)) != 0)
     {
        
        errf("Failed to close file (%m).");
        die();
     }
   
 
   load_p=strtok(loadavg, " ");
   printf("packet.load.load1 %s\n",load_p);
   for(; (*load_p != ' ') && (*load_p != '\0'); load_p++);
   load_p++;
   if (load_p == NULL) abort();
   load_p=strtok(load_p, " ");
   if (load_p == NULL) abort();
   printf("packet.load.load5 %s\n",load_p);
   for(; (*load_p != ' ') && (*load_p != '\0'); load_p++);
   load_p++;
   if (load_p == NULL) abort();
   load_p=strtok(load_p, " ");
   if (load_p == NULL) abort();
   printf("packet.load.load15 %s\n",load_p);

}

void getMemInfo()
{
   char *line;
   char *mem;
   char *swap;
   char *ch;
   long memstat[6]; 
   long swapstat[3];
   long tmp;
   int counter=0;

   FILE *f;
   
   if ((f=fopen("/proc/meminfo", "r" ))==NULL)
     {
        errf("Failed to open memory stats (%m)");
        die();
     }
   
   /* Readin being the number of lines we want to get.. Once we have them, why bother continuing */
   while(((line=fpgetline(f)) != NULL) && (counter < 2) )
     {
        
        if (((strncmp("Mem: ",line,5)) == 0))
          {
             mem=strdup(line);
             counter++;
          }
        if (((strncmp(line,"Swap: ",6)) == 0))
          {
             swap=strdup(line);
             counter++;
          }
     }
   
   
   if ((fclose(f)) != 0)
     {
        errf("Failed to close file (%m).");
        die();
     }
 
   /* Get the info we want from the 2 read in lines */
   
   ch = strchr(mem, ' ');
   if (ch == NULL) abort();
   *ch = '\0';
   ch++;
   /* By now we should of skipped the mem: bit.. onto the numbers */
   
   for(counter=0;counter<6;counter++)
     {
        for (; (*ch == ' '); ch++);
        if (ch == NULL) abort();
        memstat[counter]=atol(ch);
        ch++;
        for(; (*ch != ' ') && (*ch != '\0'); ch++);
        if (ch == NULL) abort();
     }
        
      
   /* Now swap.. */
   ch = strchr(swap, ' ');
   if (ch == NULL) abort();
   *ch = '\0';
   ch++;
   
   for(counter=0;counter<3;counter++)
     {  
        for (; (*ch == ' '); ch++);
        if (ch == NULL) abort();
        swapstat[counter]=atol(ch);
        ch++;   
        for(; (*ch != ' ') && (*ch != '\0'); ch++);
        if (ch == NULL) abort();
        
     }
   
   printf("packet.memory.total %ld\n",((memstat[0]/1024)/1024));
   /* Due to batty linux we do some maths to work out roughly what the free ram is */
   tmp=((memstat[1] - memstat[4])/1024)/1024;
   printf("packet.memory.used %ld\n",tmp);
   tmp=((memstat[2] + memstat[4])/1024)/1024;
   printf("packet.memory.free %ld\n",tmp);

   printf("packet.swap.total %ld\n",((swapstat[0]/1024)/1024));
   printf("packet.swap.used %ld\n",((swapstat[1]/1024)/1024));
   printf("packet.swap.free %ld\n",((swapstat[2])/1024)/1024);
   
   free(mem);
   free(swap);
   
}

void cpustats()
{
   char *tmp;
   char *line[2];
   char *line_p[2];
   long cpustats[4][2];
   long user, kernel, idle;
   long total;
   int x,y;
   float usage;
   FILE *f;
   
   if ((f=fopen("/proc/stat", "r" ))==NULL)
     {
        errf("Failed to open cpu stats (%m)");
        die();
     }

   if((tmp=fpgetline(f)) == NULL)
     {
        errf("Failed to read cpu stats (%m)");
        die();
     }

   if((line[0]=strdup(tmp)) == NULL)
     {
        errf("strdup failed (%m)");
        die();
     }
   
   if ((fclose(f)) != 0)
     {
        errf("Failed to close file (%m).");
        die();
     }
     
   sleep(1);
   
   if ((f=fopen("/proc/stat", "r" ))==NULL)
     {
        errf("Failed to open cpu stats (%m)");
        die();
     }
   
   if((tmp=fpgetline(f)) == NULL)
     {
        errf("Failed to read cpu stats (%m)");
        die();
     }
   
   if((line[1]=strdup(tmp)) == NULL)
     {
        errf("strdup failed (%m)");
        die();
     }
      
     if ((fclose(f)) != 0)
     {
        errf("Failed to close file (%m).");
        die();
     }
   
      for(x=0;x<2;x++)
     {
        line_p[x] = strchr(line[x], ' ');
        if (line_p[x] == NULL) abort();
        *line_p[x] = '\0';
        line_p[x]++;
     }
  
   /* Now should be passed "cpu " */
   
   
   for(x=0;x<2;x++)
     {
        for(y=0;y<4;y++)
          {
             for (; (*line_p[x] == ' '); line_p[x]++);
             if (line_p[x] == NULL) abort();
             cpustats[y][x]=atol(line_p[x]);
             line_p[x]++;       
             for(; (*line_p[x] != ' ') && (*line_p[x] != '\0'); line_p[x]++);
             if (line_p[x] == NULL) abort();
             for (; (*line_p[x] == ' '); line_p[x]++);
          }
        
     }
   
   user=cpustats[0][1]-cpustats[0][0]+cpustats[1][1]-cpustats[1][0];
   kernel=cpustats[2][1]-cpustats[2][0];
   idle=cpustats[3][1]-cpustats[3][0];
   
   /* use total to get the total number and then work out the percentages */
   total=user+kernel+idle;
   
   usage=((((float)user)/((float)total))*100.00);
   printf("packet.cpu.user %3.2f\n", usage);
   usage=((((float)kernel)/((float)total))*100.00);
   printf("packet.cpu.kernel %3.2f\n", usage);
   usage=((((float)idle)/((float)total))*100.00);
   printf("packet.cpu.idle %3.2f\n", usage);
   
   /* Cos iscreams broke ;) */
   printf("packet.cpu.iowait 0\n");
   
   free(line[0]);
   free(line[1]);
}

void processStats()
{
   int sleeping=0;
   int zombie=0;
   int stopped=0;
   int running=0;
   int nousers=0;
   char *line;
   char *line_p;
   struct utmp *entry;

   FILE *f;
 
   if((f=popen("/bin/ps -Al" , "r")) == NULL)
     {
        errf("Failed to get process stats (%m)");
        die();
     }
   
   while((line=fpgetline(f)) != NULL)
     {
        line_p=strchr(line, ' ');
        line_p++;
        if (line_p==NULL) abort();
        /* Ok, we should now be at the state :) .. */
        if (*line_p=='S') sleeping++;
        if (*line_p=='R') running++;
        if (*line_p=='Z') zombie++;
        if (*line_p=='T') stopped++;
          
     }
   
   if((pclose(f)) == -1)
     {
        errf("Failed to close process stats (%m)");
        die();
     }


   printf("packet.users.list");

   while((entry=getutent()) != NULL)
     {
        if(entry->ut_type==USER_PROCESS)
          {
             printf(" %s",entry->ut_user);
             nousers++;
          }
        
     }
   
   printf("\npacket.users.count %d\n", nousers);
   
   printf("packet.processes.total %d\n",sleeping);
   printf("packet.processes.sleeping %d\n",running);
   printf("packet.processes.zombie %d\n",zombie);
   printf("packet.processes.stopped %d\n", stopped);
   printf("packet.processes.total %d\n", (sleeping+running+zombie+stopped));
   
}

void uptimeStats()
{
   char *line;
   char *line_p;
   FILE *f;
   
   if ((f=fopen("/proc/uptime", "r")) == NULL)
     {
        errf("Failed to get uptime stats (%m)");
        die();
     }
   
   if ((line=fpgetline(f)) == NULL)
     {  
        errf("Failed to read uptime stats (%m)");
        die();
     }

   if ((fclose(f)) != 0)
     {
        errf("Failed to close file (%m).");
        die();
     }
   
   
   line_p=strchr(line, '.');
   if (line_p==NULL) abort();
   *line_p='\0';
   
   printf("packet.os.uptime %s\n", line);

}


void osStats()
{

   struct utsname os;
   
   if((uname(&os)) != 0)
     {
        errf("Failed to get os stats (%m)");
        die();
     }
   
   printf("packet.os.name %s\n", os.sysname);
   printf("packet.os.release %s\n" , os.release);
   printf("packet.os.version %s\n", os.version);
   printf("packet.os.sysname %s\n" , os.nodename);
   printf("packet.os.platform %s\n", os.machine);
   
}

void diskStats()
{
   struct statfs df;
   FILE *f;
   char *line;
   char *line_p;
   long bstok;
   int diskcnt=0;
   
   if ((f=fopen("/etc/mtab", "r")) == NULL)
     {
        errf("Failed to get uptime stats (%m)");
        die();
     }   
   
   while((line=fpgetline(f)) != NULL)
     {
        line_p=strchr(line, ' ');
        if(line_p==NULL) abort();
        *line_p='\0';
        line_p++;
        if(line_p==NULL) abort();
        printf("packet.disk.p%d.attributes.name %s\n",diskcnt,line);
        line=strchr(line_p, ' ');
        if(line==NULL) abort();
        *line='\0';
        printf("packet.disk.p%d.attributes.mount %s\n",diskcnt,line_p);
        if((statfs(line_p, &df)) != 0)
          {
             errf("Failed to get Filesystem stats (%m)");
             die();
          }
        bstok=(df.f_bsize/1024);
        printf("packet.disk.p%d.attributes.kbytes %ld\n",diskcnt,bstok*df.f_blocks);
        printf("packet.disk.p%d.attributes.used %ld\n" ,diskcnt, ((bstok*df.f_blocks)-(bstok*df.f_bfree)));
        printf("packet.disk.p%d.attributes.avail %ld\n", diskcnt, (df.f_bsize/1024)*df.f_bavail);
        printf("packet.disk.p%d.attributes.totalinodes %ld\n", diskcnt, df.f_files);
        printf("packet.disk.p%d.attributes.freeinodes %ld\n", diskcnt, df.f_ffree);
        diskcnt++;
     }
   
   
}


int main()
{
   getLoadAv();
   getMemInfo();
   cpustats();
   processStats();
   uptimeStats();
   osStats();
   diskStats();
   fflush(stdout);
   return 0;
}
Revision:	1.3
Committed:	Fri Mar 8 14:54:32 2002 UTC (22 years, 7 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.2:	+1 -1 lines
Log Message:	Makefile for the linux ihost plugin. Links statically against libukcprog which is also in the CVS repository.
#	User	Rev	Content
1	pajs	1.1	#include <stdio.h>
2			#include <stdlib.h>
3	tdb	1.3	#include "ukcprog.h"
4	pajs	1.1	#include <string.h>
5			#include <unistd.h>
6			#include <sys/utsname.h>
7			#include <sys/vfs.h>
8			#include <utmp.h>
9			#include <pwd.h>
10
11			int die()
12			{
13			exit (1);
14			}
15
16			void getLoadAv()
17			{
18			FILE *f;
19			char *loadavg;
20			char *load_p;
21
22			if ((f=fopen("/proc/loadavg", "r" ))==NULL)
23			{
24			errf("Failed to open load averages (%m)");
25			die();
26			}
27
28
29			if ((loadavg=fpgetline(f)) == NULL)
30			{
31			errf("Failed to read any data for load averages (%m)");
32			die();
33			}
34
35
36			if ((fclose(f)) != 0)
37			{
38
39			errf("Failed to close file (%m).");
40			die();
41			}
42
43
44
45
46			load_p=strtok(loadavg, " ");
47			printf("packet.load.load1 %s\n",load_p);
48			for(; (load_p != ' ') && (load_p != '\0'); load_p++);
49			load_p++;
50			if (load_p == NULL) abort();
51			load_p=strtok(load_p, " ");
52			if (load_p == NULL) abort();
53			printf("packet.load.load5 %s\n",load_p);
54			for(; (load_p != ' ') && (load_p != '\0'); load_p++);
55			load_p++;
56			if (load_p == NULL) abort();
57			load_p=strtok(load_p, " ");
58			if (load_p == NULL) abort();
59			printf("packet.load.load15 %s\n",load_p);
60
61			}
62
63			void getMemInfo()
64			{
65			char *line;
66			char *mem;
67			char *swap;
68			char *ch;
69			long memstat[6];
70			long swapstat[3];
71			long tmp;
72			int counter=0;
73
74			FILE *f;
75
76			if ((f=fopen("/proc/meminfo", "r" ))==NULL)
77			{
78			errf("Failed to open memory stats (%m)");
79			die();
80			}
81
82			/* Readin being the number of lines we want to get.. Once we have them, why bother continuing */
83			while(((line=fpgetline(f)) != NULL) && (counter < 2) )
84			{
85
86			if (((strncmp("Mem: ",line,5)) == 0))
87			{
88			mem=strdup(line);
89			counter++;
90			}
91			if (((strncmp(line,"Swap: ",6)) == 0))
92			{
93			swap=strdup(line);
94			counter++;
95			}
96			}
97
98
99			if ((fclose(f)) != 0)
100			{
101			errf("Failed to close file (%m).");
102			die();
103			}
104
105			/* Get the info we want from the 2 read in lines */
106
107			ch = strchr(mem, ' ');
108			if (ch == NULL) abort();
109			*ch = '\0';
110			ch++;
111			/* By now we should of skipped the mem: bit.. onto the numbers */
112
113			for(counter=0;counter<6;counter++)
114			{
115			for (; (*ch == ' '); ch++);
116			if (ch == NULL) abort();
117			memstat[counter]=atol(ch);
118			ch++;
119			for(; (ch != ' ') && (ch != '\0'); ch++);
120			if (ch == NULL) abort();
121			}
122
123
124			/* Now swap.. */
125			ch = strchr(swap, ' ');
126			if (ch == NULL) abort();
127			*ch = '\0';
128			ch++;
129
130			for(counter=0;counter<3;counter++)
131			{
132			for (; (*ch == ' '); ch++);
133			if (ch == NULL) abort();
134			swapstat[counter]=atol(ch);
135			ch++;
136			for(; (ch != ' ') && (ch != '\0'); ch++);
137			if (ch == NULL) abort();
138
139			}
140
141	pajs	1.2	printf("packet.memory.total %ld\n",((memstat[0]/1024)/1024));
142	pajs	1.1	/* Due to batty linux we do some maths to work out roughly what the free ram is */
143	pajs	1.2	tmp=((memstat[1] - memstat[4])/1024)/1024;
144	pajs	1.1	printf("packet.memory.used %ld\n",tmp);
145	pajs	1.2	tmp=((memstat[2] + memstat[4])/1024)/1024;
146	pajs	1.1	printf("packet.memory.free %ld\n",tmp);
147
148	pajs	1.2	printf("packet.swap.total %ld\n",((swapstat[0]/1024)/1024));
149			printf("packet.swap.used %ld\n",((swapstat[1]/1024)/1024));
150			printf("packet.swap.free %ld\n",((swapstat[2])/1024)/1024);
151	pajs	1.1
152			free(mem);
153			free(swap);
154
155			}
156
157			void cpustats()
158			{
159			char *tmp;
160			char *line[2];
161			char *line_p[2];
162			long cpustats[4][2];
163			long user, kernel, idle;
164			long total;
165			int x,y;
166			float usage;
167			FILE *f;
168
169			if ((f=fopen("/proc/stat", "r" ))==NULL)
170			{
171			errf("Failed to open cpu stats (%m)");
172			die();
173			}
174
175			if((tmp=fpgetline(f)) == NULL)
176			{
177			errf("Failed to read cpu stats (%m)");
178			die();
179			}
180
181			if((line[0]=strdup(tmp)) == NULL)
182			{
183			errf("strdup failed (%m)");
184			die();
185			}
186
187			if ((fclose(f)) != 0)
188			{
189			errf("Failed to close file (%m).");
190			die();
191			}
192
193			sleep(1);
194
195			if ((f=fopen("/proc/stat", "r" ))==NULL)
196			{
197			errf("Failed to open cpu stats (%m)");
198			die();
199			}
200
201			if((tmp=fpgetline(f)) == NULL)
202			{
203			errf("Failed to read cpu stats (%m)");
204			die();
205			}
206
207			if((line[1]=strdup(tmp)) == NULL)
208			{
209			errf("strdup failed (%m)");
210			die();
211			}
212
213			if ((fclose(f)) != 0)
214			{
215			errf("Failed to close file (%m).");
216			die();
217			}
218
219			for(x=0;x<2;x++)
220			{
221			line_p[x] = strchr(line[x], ' ');
222			if (line_p[x] == NULL) abort();
223			*line_p[x] = '\0';
224			line_p[x]++;
225			}
226
227			/* Now should be passed "cpu " */
228
229
230			for(x=0;x<2;x++)
231			{
232			for(y=0;y<4;y++)
233			{
234			for (; (*line_p[x] == ' '); line_p[x]++);
235			if (line_p[x] == NULL) abort();
236			cpustats[y][x]=atol(line_p[x]);
237			line_p[x]++;
238			for(; (line_p[x] != ' ') && (line_p[x] != '\0'); line_p[x]++);
239			if (line_p[x] == NULL) abort();
240			for (; (*line_p[x] == ' '); line_p[x]++);
241			}
242
243			}
244
245			user=cpustats[0][1]-cpustats[0][0]+cpustats[1][1]-cpustats[1][0];
246			kernel=cpustats[2][1]-cpustats[2][0];
247			idle=cpustats[3][1]-cpustats[3][0];
248
249			/* use total to get the total number and then work out the percentages */
250			total=user+kernel+idle;
251
252			usage=((((float)user)/((float)total))*100.00);
253			printf("packet.cpu.user %3.2f\n", usage);
254			usage=((((float)kernel)/((float)total))*100.00);
255			printf("packet.cpu.kernel %3.2f\n", usage);
256			usage=((((float)idle)/((float)total))*100.00);
257			printf("packet.cpu.idle %3.2f\n", usage);
258
259			/* Cos iscreams broke ;) */
260			printf("packet.cpu.iowait 0\n");
261
262			free(line[0]);
263			free(line[1]);
264			}
265
266			void processStats()
267			{
268			int sleeping=0;
269			int zombie=0;
270			int stopped=0;
271			int running=0;
272			int nousers=0;
273			char *line;
274			char *line_p;
275			struct utmp *entry;
276
277			FILE *f;
278
279			if((f=popen("/bin/ps -Al" , "r")) == NULL)
280			{
281			errf("Failed to get process stats (%m)");
282			die();
283			}
284
285			while((line=fpgetline(f)) != NULL)
286			{
287			line_p=strchr(line, ' ');
288			line_p++;
289			if (line_p==NULL) abort();
290			/* Ok, we should now be at the state :) .. */
291			if (*line_p=='S') sleeping++;
292			if (*line_p=='R') running++;
293			if (*line_p=='Z') zombie++;
294			if (*line_p=='T') stopped++;
295
296			}
297
298			if((pclose(f)) == -1)
299			{
300			errf("Failed to close process stats (%m)");
301			die();
302			}
303
304
305			printf("packet.users.list");
306
307			while((entry=getutent()) != NULL)
308			{
309			if(entry->ut_type==USER_PROCESS)
310			{
311			printf(" %s",entry->ut_user);
312			nousers++;
313			}
314
315			}
316
317			printf("\npacket.users.count %d\n", nousers);
318
319			printf("packet.processes.total %d\n",sleeping);
320			printf("packet.processes.sleeping %d\n",running);
321			printf("packet.processes.zombie %d\n",zombie);
322			printf("packet.processes.stopped %d\n", stopped);
323			printf("packet.processes.total %d\n", (sleeping+running+zombie+stopped));
324
325			}
326
327			void uptimeStats()
328			{
329			char *line;
330			char *line_p;
331			FILE *f;
332
333			if ((f=fopen("/proc/uptime", "r")) == NULL)
334			{
335			errf("Failed to get uptime stats (%m)");
336			die();
337			}
338
339			if ((line=fpgetline(f)) == NULL)
340			{
341			errf("Failed to read uptime stats (%m)");
342			die();
343			}
344
345			if ((fclose(f)) != 0)
346			{
347			errf("Failed to close file (%m).");
348			die();
349			}
350
351
352			line_p=strchr(line, '.');
353			if (line_p==NULL) abort();
354			*line_p='\0';
355
356			printf("packet.os.uptime %s\n", line);
357
358			}
359
360
361			void osStats()
362			{
363
364			struct utsname os;
365
366			if((uname(&os)) != 0)
367			{
368			errf("Failed to get os stats (%m)");
369			die();
370			}
371
372			printf("packet.os.name %s\n", os.sysname);
373			printf("packet.os.release %s\n" , os.release);
374			printf("packet.os.version %s\n", os.version);
375			printf("packet.os.sysname %s\n" , os.nodename);
376			printf("packet.os.platform %s\n", os.machine);
377
378			}
379
380			void diskStats()
381			{
382			struct statfs df;
383			FILE *f;
384			char *line;
385			char *line_p;
386			long bstok;
387			int diskcnt=0;
388
389			if ((f=fopen("/etc/mtab", "r")) == NULL)
390			{
391			errf("Failed to get uptime stats (%m)");
392			die();
393			}
394
395			while((line=fpgetline(f)) != NULL)
396			{
397			line_p=strchr(line, ' ');
398			if(line_p==NULL) abort();
399			*line_p='\0';
400			line_p++;
401			if(line_p==NULL) abort();
402			printf("packet.disk.p%d.attributes.name %s\n",diskcnt,line);
403			line=strchr(line_p, ' ');
404			if(line==NULL) abort();
405			*line='\0';
406			printf("packet.disk.p%d.attributes.mount %s\n",diskcnt,line_p);
407			if((statfs(line_p, &df)) != 0)
408			{
409			errf("Failed to get Filesystem stats (%m)");
410			die();
411			}
412			bstok=(df.f_bsize/1024);
413			printf("packet.disk.p%d.attributes.kbytes %ld\n",diskcnt,bstok*df.f_blocks);
414			printf("packet.disk.p%d.attributes.used %ld\n" ,diskcnt, ((bstokdf.f_blocks)-(bstokdf.f_bfree)));
415			printf("packet.disk.p%d.attributes.avail %ld\n", diskcnt, (df.f_bsize/1024)*df.f_bavail);
416			printf("packet.disk.p%d.attributes.totalinodes %ld\n", diskcnt, df.f_files);
417			printf("packet.disk.p%d.attributes.freeinodes %ld\n", diskcnt, df.f_ffree);
418			diskcnt++;
419			}
420
421
422			}
423
424
425			int main()
426			{
427			getLoadAv();
428			getMemInfo();
429			cpustats();
430			processStats();
431			uptimeStats();
432			osStats();
433			diskStats();
434			fflush(stdout);
435			return 0;
436			}