src/statgrab/statgrab.c

/* 
 * i-scream central monitoring system
 * http://www.i-scream.org
 * Copyright (C) 2000-2003 i-scream
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include <statgrab.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>

typedef enum {
        LONG_LONG = 0,
        TIME_T,
        FLOAT,
        DOUBLE,
        STRING,
        INT
} stat_type;

typedef enum {
        DISPLAY_LINUX = 0,
        DISPLAY_BSD,
        DISPLAY_MRTG,
        DISPLAY_PLAIN
} display_mode_type;

typedef enum {
        REPEAT_NONE = 0,
        REPEAT_ONCE,
        REPEAT_FOREVER
} repeat_mode_type;

typedef struct {
        char *name;
        stat_type type;
        void *stat;
} stat;

stat *stats = NULL;
int num_stats = 0;
int alloc_stats = 0;
#define INCREMENT_STATS 64

display_mode_type display_mode = DISPLAY_LINUX;
repeat_mode_type repeat_mode = REPEAT_NONE;
int repeat_time = 1;
int use_cpu_percent = 0;

/* Exit with an error message. */
void die(const char *s) {
        fprintf(stderr, "fatal: %s\n", s);
        exit(1);
}

/* Remove all the recorded stats. */
void clear_stats() {
        int i;

        for (i = 0; i < num_stats; i++)
                free(stats[i].name);
        free(stats);
        stats = NULL;
        num_stats = 0;
        alloc_stats = 0;
}

/* Add a stat. The varargs make up the name, joined with dots; the name is
   terminated with a NULL. */
void add_stat(stat_type type, void *stat, ...) {
        va_list ap;
        int len = 0;
        char *name, *p;

        /* Figure out how long the name will be, including dots and trailing
           \0. */
        va_start(ap, stat);
        while (1) {
                const char *part = va_arg(ap, const char *);
                if (part == NULL)
                        break;
                len += 1 + strlen(part);
        }
        va_end(ap);

        /* Paste the name together. */
        name = malloc(len);
        if (name == NULL)
                die("out of memory");
        p = name;
        va_start(ap, stat);
        while (1) {
                const char *part = va_arg(ap, const char *);
                int partlen;
                if (part == NULL)
                        break;
                partlen = strlen(part);
                memcpy(p, part, partlen);
                p += partlen;
                *p++ = '.';
        }
        va_end(ap);
        *--p = '\0';

        /* Replace spaces with underscores. */
        for (p = name; *p != '\0'; p++) {
                if (*p == ' ')
                        *p = '_';
        }

        /* Stretch the stats array if necessary. */
        if (num_stats >= alloc_stats) {
                alloc_stats += INCREMENT_STATS;
                stats = realloc(stats, alloc_stats * sizeof *stats);
                if (stats == NULL)
                        die("out of memory");
        }

        stats[num_stats].name = name;
        stats[num_stats].type = type;
        stats[num_stats].stat = stat;
        ++num_stats;
}

/* Compare two stats by name, for sorting purposes. */
int stats_compare(const void *a, const void *b) {
        return strcmp(((stat *)a)->name, ((stat *)b)->name);
}

/* Clear and rebuild the stats array. */
void get_stats(int use_diffs) {
        cpu_states_t *cpu_s;
        cpu_percent_t *cpu_p;
        mem_stat_t *mem;
        load_stat_t *load;
        user_stat_t *user;
        swap_stat_t *swap;
        general_stat_t *gen;
        disk_stat_t *disk;
        diskio_stat_t *diskio;
        process_stat_t *proc;
        network_stat_t *net;
        page_stat_t *page;
        static int zero = 0;
        int n, i;

        clear_stats();

        /* Constants, for use with MRTG mode. */
        add_stat(INT, &zero, "const", "0", NULL);

        /* FIXME when only fetching some stats, it'd be more efficient to only
           do the libstatgrab calls needed, rather than fetching everything. */

        if (use_cpu_percent) {
                cpu_p = cpu_percent_usage();
                if (cpu_p != NULL) {
                        add_stat(FLOAT, &cpu_p->user,
                                 "cpu", "user", NULL);
                        add_stat(FLOAT, &cpu_p->kernel,
                                 "cpu", "kernel", NULL);
                        add_stat(FLOAT, &cpu_p->idle,
                                 "cpu", "idle", NULL);
                        add_stat(FLOAT, &cpu_p->iowait,
                                 "cpu", "iowait", NULL);
                        add_stat(FLOAT, &cpu_p->swap,
                                 "cpu", "swap", NULL);
                        add_stat(FLOAT, &cpu_p->nice,
                                 "cpu", "nice", NULL);
                        add_stat(TIME_T, &cpu_s->systime,
                                 "cpu", "time_taken", NULL);
                }
        } else {
                cpu_s = use_diffs ? get_cpu_diff() : get_cpu_totals();
                if (cpu_s != NULL) {
                        add_stat(LONG_LONG, &cpu_s->user,
                                 "cpu", "user", NULL);
                        add_stat(LONG_LONG, &cpu_s->kernel,
                                 "cpu", "kernel", NULL);
                        add_stat(LONG_LONG, &cpu_s->idle,
                                 "cpu", "idle", NULL);
                        add_stat(LONG_LONG, &cpu_s->iowait,
                                 "cpu", "iowait", NULL);
                        add_stat(LONG_LONG, &cpu_s->swap,
                                 "cpu", "swap", NULL);
                        add_stat(LONG_LONG, &cpu_s->nice,
                                 "cpu", "nice", NULL);
                        add_stat(LONG_LONG, &cpu_s->total,
                                 "cpu", "total", NULL);
                        add_stat(TIME_T, &cpu_s->systime,
                                 "cpu", "systime", NULL);
                }
        }

        mem = get_memory_stats();
        if (mem != NULL) {
                add_stat(LONG_LONG, &mem->total, "mem", "total", NULL);
                add_stat(LONG_LONG, &mem->free, "mem", "free", NULL);
                add_stat(LONG_LONG, &mem->used, "mem", "used", NULL);
                add_stat(LONG_LONG, &mem->cache, "mem", "cache", NULL);
        }

        load = get_load_stats();
        if (load != NULL) {
                add_stat(DOUBLE, &load->min1, "load", "min1", NULL);
                add_stat(DOUBLE, &load->min5, "load", "min5", NULL);
                add_stat(DOUBLE, &load->min15, "load", "min15", NULL);
        }

        user = get_user_stats();
        if (user != NULL) {
                add_stat(INT, &user->num_entries, "user", "num", NULL);
                add_stat(STRING, &user->name_list, "user", "names", NULL);
        }

        swap = get_swap_stats();
        if (swap != NULL) {
                add_stat(LONG_LONG, &swap->total, "swap", "total", NULL);
                add_stat(LONG_LONG, &swap->used, "swap", "used", NULL);
                add_stat(LONG_LONG, &swap->free, "swap", "free", NULL);
        }

        gen = get_general_stats();
        if (gen != NULL) {
                add_stat(STRING, &gen->os_name,
                         "general", "os_name", NULL);
                add_stat(STRING, &gen->os_release,
                         "general", "os_release", NULL);
                add_stat(STRING, &gen->os_version,
                         "general", "os_version", NULL);
                add_stat(STRING, &gen->platform, "general", "platform", NULL);
                add_stat(STRING, &gen->hostname, "general", "hostname", NULL);
                add_stat(TIME_T, &gen->uptime, "general", "uptime", NULL);
        }

        disk = get_disk_stats(&n);
        if (disk != NULL) {
                for (i = 0; i < n; i++) {
                        /* FIXME it'd be nicer if libstatgrab did this */
                        const char *name = disk[i].device_name,
                                   *p = strrchr(name, '/');
                        if (p != NULL)
                                name = p + 1;
                        if (*name == '\0')
                                name = "root";
        
                        add_stat(STRING, &disk[i].device_name,
                                 "fs", name, "device_name", NULL);
                        add_stat(STRING, &disk[i].fs_type,
                                 "fs", name, "fs_type", NULL);
                        add_stat(STRING, &disk[i].mnt_point,
                                 "fs", name, "mnt_point", NULL);
                        add_stat(LONG_LONG, &disk[i].size,
                                 "fs", name, "size", NULL);
                        add_stat(LONG_LONG, &disk[i].used,
                                 "fs", name, "used", NULL);
                        add_stat(LONG_LONG, &disk[i].avail,
                                 "fs", name, "avail", NULL);
                        add_stat(LONG_LONG, &disk[i].total_inodes,
                                 "fs", name, "total_inodes", NULL);
                        add_stat(LONG_LONG, &disk[i].used_inodes,
                                 "fs", name, "used_inodes", NULL);
                        add_stat(LONG_LONG, &disk[i].free_inodes,
                                 "fs", name, "free_inodes", NULL);
                }
        }

        diskio = use_diffs ? get_diskio_stats_diff(&n) : get_diskio_stats(&n);
        if (diskio != NULL) {
                for (i = 0; i < n; i++) {
                        const char *name = diskio[i].disk_name;
        
                        add_stat(STRING, &diskio[i].disk_name,
                                 "disk", name, "disk_name", NULL);
                        add_stat(LONG_LONG, &diskio[i].read_bytes,
                                 "disk", name, "read_bytes", NULL);
                        add_stat(LONG_LONG, &diskio[i].write_bytes,
                                 "disk", name, "write_bytes", NULL);
                        add_stat(TIME_T, &diskio[i].systime,
                                 "disk", name, "systime", NULL);
                }
        }

        proc = get_process_stats();
        if (proc != NULL) {
                add_stat(INT, &proc->total, "proc", "total", NULL);
                add_stat(INT, &proc->running, "proc", "running", NULL);
                add_stat(INT, &proc->sleeping, "proc", "sleeping", NULL);
                add_stat(INT, &proc->stopped, "proc", "stopped", NULL);
                add_stat(INT, &proc->zombie, "proc", "zombie", NULL);
        }

        net = use_diffs ? get_network_stats_diff(&n) : get_network_stats(&n);
        if (net != NULL) {
                for (i = 0; i < n; i++) {
                        const char *name = net[i].interface_name;
        
                        add_stat(STRING, &net[i].interface_name,
                                 "net", name, "interface_name", NULL);
                        add_stat(LONG_LONG, &net[i].tx,
                                 "net", name, "tx", NULL);
                        add_stat(LONG_LONG, &net[i].rx,
                                 "net", name, "rx", NULL);
                        add_stat(TIME_T, &net[i].systime,
                                 "net", name, "systime", NULL);
                }
        }

        page = use_diffs ? get_page_stats_diff() : get_page_stats();
        if (page != NULL) {
                add_stat(LONG_LONG, &page->pages_pagein, "page", "in", NULL);
                add_stat(LONG_LONG, &page->pages_pageout, "page", "out", NULL);
                add_stat(LONG_LONG, &page->systime, "page", "systime", NULL);
        }

        qsort(stats, num_stats, sizeof *stats, stats_compare);
}

/* Print the value of a stat. */
void print_stat_value(const stat *s) {
        void *v = s->stat;

        switch (s->type) {
        case LONG_LONG:
                printf("%lld", *(long long *)v);
                break;
        case TIME_T:
                /* FIXME option for formatted time? */
                printf("%ld", *(time_t *)v);
                break;
        case FLOAT:
                printf("%f", *(float *)v);
                break;
        case DOUBLE:
                printf("%f", *(double *)v);
                break;
        case STRING:
                /* FIXME escaping? */
                printf("%s", *(char **)v);
                break;
        case INT:
                printf("%d", *(int *)v);
                break;
        }
}

/* Print the name and value of a stat. */
void print_stat(const stat *s) {
        switch (display_mode) {
        case DISPLAY_LINUX:
                printf("%s = ", s->name);
                break;
        case DISPLAY_BSD:
                printf("%s: ", s->name);
                break;
        case DISPLAY_MRTG:
        case DISPLAY_PLAIN:
                break;
        }
        print_stat_value(s);
        printf("\n");
}

/* Print stats as specified on the provided command line. */
void print_stats(int argc, char **argv) {
        int i;

        if (argc == optind) {
                /* Print all stats. */
                for (i = 0; i < num_stats; i++)
                        print_stat(&stats[i]);
        } else {
                /* Print selected stats. */
                for (i = optind; i < argc; i++) {
                        stat key;
                        const stat *s;

                        key.name = argv[i];
                        s = (const stat *)bsearch(&key, stats, num_stats,
                                                  sizeof *stats,
                                                  stats_compare);
                        if (s != NULL) {
                                print_stat(s);
                        }
                }
        }
}

void usage() {
        printf("Usage: statgrab [OPTION]... [STAT]...\n"
               "Display system statistics (all statistics by default).\n"
               "\n");
        printf("  -l         Linux sysctl-style output (default)\n"
               "  -b         BSD sysctl-style output\n"
               "  -m         MRTG-compatible output\n"
               "  -u         Plain output (only show values)\n"
               "  -n         Display cumulative stats once (default)\n"
               "  -s         Display stat differences repeatedly\n"
               "  -o         Display stat differences once\n"
               "  -t DELAY   When repeating, wait DELAY seconds between updates (default 1)\n"
               "  -p         Display CPU usage as percentages rather than absolute values\n"
               "\n");
        printf("Version %s - report bugs to <%s>.\n",
                PACKAGE_VERSION, PACKAGE_BUGREPORT);
        exit(1);
}

int main(int argc, char **argv) {
        opterr = 0;
        while (1) {
                int c = getopt(argc, argv, "lbmunsot:p");
                if (c == -1)
                        break;
                switch (c) {
                case 'l':
                        display_mode = DISPLAY_LINUX;
                        break;
                case 'b':
                        display_mode = DISPLAY_BSD;
                        break;
                case 'm':
                        display_mode = DISPLAY_MRTG;
                        break;
                case 'u':
                        display_mode = DISPLAY_PLAIN;
                        break;
                case 'n':
                        repeat_mode = REPEAT_NONE;
                        break;
                case 's':
                        repeat_mode = REPEAT_FOREVER;
                        break;
                case 'o':
                        repeat_mode = REPEAT_ONCE;
                        break;
                case 't':
                        repeat_time = atoi(optarg);
                        break;
                case 'p':
                        use_cpu_percent = 1;
                        break;
                default:
                        usage();
                }
        }

        if (display_mode == DISPLAY_MRTG) {
                if ((argc - optind) != 2)
                        die("mrtg mode: must specify exactly two stats");
                if (repeat_mode != REPEAT_NONE)
                        die("mrtg mode: cannot repeat display");
        }

        switch (repeat_mode) {
        case REPEAT_NONE:
                get_stats(0);
                print_stats(argc, argv);
                break;
        case REPEAT_ONCE:
                get_stats(1);
                sleep(repeat_time);
                get_stats(1);
                print_stats(argc, argv);
                break;
        case REPEAT_FOREVER:
                while (1) {
                        get_stats(1);
                        print_stats(argc, argv);
                        printf("\n");
                        sleep(repeat_time);
                }
        }

        if (display_mode == DISPLAY_MRTG) {
                printf("\n");
                printf("statgrab\n");
        }

        return 0;
}

Revision:	1.2
Committed:	Wed Aug 27 14:00:12 2003 UTC (21 years, 3 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.1:	+2 -1 lines
Log Message:	Put the version number in the usage page.
#	Content
1	/*
2	* i-scream central monitoring system
3	* http://www.i-scream.org
4	* Copyright (C) 2000-2003 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.
10	*
11	* This program 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.
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.
19	*/
20
21	#include <statgrab.h>
22	#include <string.h>
23	#include <stdio.h>
24	#include <stdarg.h>
25	#include <stdlib.h>
26	#include <unistd.h>
27
28	typedef enum {
29	LONG_LONG = 0,
30	TIME_T,
31	FLOAT,
32	DOUBLE,
33	STRING,
34	INT
35	} stat_type;
36
37	typedef enum {
38	DISPLAY_LINUX = 0,
39	DISPLAY_BSD,
40	DISPLAY_MRTG,
41	DISPLAY_PLAIN
42	} display_mode_type;
43
44	typedef enum {
45	REPEAT_NONE = 0,
46	REPEAT_ONCE,
47	REPEAT_FOREVER
48	} repeat_mode_type;
49
50	typedef struct {
51	char *name;
52	stat_type type;
53	void *stat;
54	} stat;
55
56	stat *stats = NULL;
57	int num_stats = 0;
58	int alloc_stats = 0;
59	#define INCREMENT_STATS 64
60
61	display_mode_type display_mode = DISPLAY_LINUX;
62	repeat_mode_type repeat_mode = REPEAT_NONE;
63	int repeat_time = 1;
64	int use_cpu_percent = 0;
65
66	/* Exit with an error message. */
67	void die(const char *s) {
68	fprintf(stderr, "fatal: %s\n", s);
69	exit(1);
70	}
71
72	/* Remove all the recorded stats. */
73	void clear_stats() {
74	int i;
75
76	for (i = 0; i < num_stats; i++)
77	free(stats[i].name);
78	free(stats);
79	stats = NULL;
80	num_stats = 0;
81	alloc_stats = 0;
82	}
83
84	/* Add a stat. The varargs make up the name, joined with dots; the name is
85	terminated with a NULL. */
86	void add_stat(stat_type type, void *stat, ...) {
87	va_list ap;
88	int len = 0;
89	char name, p;
90
91	/* Figure out how long the name will be, including dots and trailing
92	\0. */
93	va_start(ap, stat);
94	while (1) {
95	const char part = va_arg(ap, const char );
96	if (part == NULL)
97	break;
98	len += 1 + strlen(part);
99	}
100	va_end(ap);
101
102	/* Paste the name together. */
103	name = malloc(len);
104	if (name == NULL)
105	die("out of memory");
106	p = name;
107	va_start(ap, stat);
108	while (1) {
109	const char part = va_arg(ap, const char );
110	int partlen;
111	if (part == NULL)
112	break;
113	partlen = strlen(part);
114	memcpy(p, part, partlen);
115	p += partlen;
116	*p++ = '.';
117	}
118	va_end(ap);
119	*--p = '\0';
120
121	/* Replace spaces with underscores. */
122	for (p = name; *p != '\0'; p++) {
123	if (*p == ' ')
124	*p = '_';
125	}
126
127	/* Stretch the stats array if necessary. */
128	if (num_stats >= alloc_stats) {
129	alloc_stats += INCREMENT_STATS;
130	stats = realloc(stats, alloc_stats * sizeof *stats);
131	if (stats == NULL)
132	die("out of memory");
133	}
134
135	stats[num_stats].name = name;
136	stats[num_stats].type = type;
137	stats[num_stats].stat = stat;
138	++num_stats;
139	}
140
141	/* Compare two stats by name, for sorting purposes. */
142	int stats_compare(const void a, const void b) {
143	return strcmp(((stat )a)->name, ((stat )b)->name);
144	}
145
146	/* Clear and rebuild the stats array. */
147	void get_stats(int use_diffs) {
148	cpu_states_t *cpu_s;
149	cpu_percent_t *cpu_p;
150	mem_stat_t *mem;
151	load_stat_t *load;
152	user_stat_t *user;
153	swap_stat_t *swap;
154	general_stat_t *gen;
155	disk_stat_t *disk;
156	diskio_stat_t *diskio;
157	process_stat_t *proc;
158	network_stat_t *net;
159	page_stat_t *page;
160	static int zero = 0;
161	int n, i;
162
163	clear_stats();
164
165	/* Constants, for use with MRTG mode. */
166	add_stat(INT, &zero, "const", "0", NULL);
167
168	/* FIXME when only fetching some stats, it'd be more efficient to only
169	do the libstatgrab calls needed, rather than fetching everything. */
170
171	if (use_cpu_percent) {
172	cpu_p = cpu_percent_usage();
173	if (cpu_p != NULL) {
174	add_stat(FLOAT, &cpu_p->user,
175	"cpu", "user", NULL);
176	add_stat(FLOAT, &cpu_p->kernel,
177	"cpu", "kernel", NULL);
178	add_stat(FLOAT, &cpu_p->idle,
179	"cpu", "idle", NULL);
180	add_stat(FLOAT, &cpu_p->iowait,
181	"cpu", "iowait", NULL);
182	add_stat(FLOAT, &cpu_p->swap,
183	"cpu", "swap", NULL);
184	add_stat(FLOAT, &cpu_p->nice,
185	"cpu", "nice", NULL);
186	add_stat(TIME_T, &cpu_s->systime,
187	"cpu", "time_taken", NULL);
188	}
189	} else {
190	cpu_s = use_diffs ? get_cpu_diff() : get_cpu_totals();
191	if (cpu_s != NULL) {
192	add_stat(LONG_LONG, &cpu_s->user,
193	"cpu", "user", NULL);
194	add_stat(LONG_LONG, &cpu_s->kernel,
195	"cpu", "kernel", NULL);
196	add_stat(LONG_LONG, &cpu_s->idle,
197	"cpu", "idle", NULL);
198	add_stat(LONG_LONG, &cpu_s->iowait,
199	"cpu", "iowait", NULL);
200	add_stat(LONG_LONG, &cpu_s->swap,
201	"cpu", "swap", NULL);
202	add_stat(LONG_LONG, &cpu_s->nice,
203	"cpu", "nice", NULL);
204	add_stat(LONG_LONG, &cpu_s->total,
205	"cpu", "total", NULL);
206	add_stat(TIME_T, &cpu_s->systime,
207	"cpu", "systime", NULL);
208	}
209	}
210
211	mem = get_memory_stats();
212	if (mem != NULL) {
213	add_stat(LONG_LONG, &mem->total, "mem", "total", NULL);
214	add_stat(LONG_LONG, &mem->free, "mem", "free", NULL);
215	add_stat(LONG_LONG, &mem->used, "mem", "used", NULL);
216	add_stat(LONG_LONG, &mem->cache, "mem", "cache", NULL);
217	}
218
219	load = get_load_stats();
220	if (load != NULL) {
221	add_stat(DOUBLE, &load->min1, "load", "min1", NULL);
222	add_stat(DOUBLE, &load->min5, "load", "min5", NULL);
223	add_stat(DOUBLE, &load->min15, "load", "min15", NULL);
224	}
225
226	user = get_user_stats();
227	if (user != NULL) {
228	add_stat(INT, &user->num_entries, "user", "num", NULL);
229	add_stat(STRING, &user->name_list, "user", "names", NULL);
230	}
231
232	swap = get_swap_stats();
233	if (swap != NULL) {
234	add_stat(LONG_LONG, &swap->total, "swap", "total", NULL);
235	add_stat(LONG_LONG, &swap->used, "swap", "used", NULL);
236	add_stat(LONG_LONG, &swap->free, "swap", "free", NULL);
237	}
238
239	gen = get_general_stats();
240	if (gen != NULL) {
241	add_stat(STRING, &gen->os_name,
242	"general", "os_name", NULL);
243	add_stat(STRING, &gen->os_release,
244	"general", "os_release", NULL);
245	add_stat(STRING, &gen->os_version,
246	"general", "os_version", NULL);
247	add_stat(STRING, &gen->platform, "general", "platform", NULL);
248	add_stat(STRING, &gen->hostname, "general", "hostname", NULL);
249	add_stat(TIME_T, &gen->uptime, "general", "uptime", NULL);
250	}
251
252	disk = get_disk_stats(&n);
253	if (disk != NULL) {
254	for (i = 0; i < n; i++) {
255	/* FIXME it'd be nicer if libstatgrab did this */
256	const char *name = disk[i].device_name,
257	*p = strrchr(name, '/');
258	if (p != NULL)
259	name = p + 1;
260	if (*name == '\0')
261	name = "root";
262
263	add_stat(STRING, &disk[i].device_name,
264	"fs", name, "device_name", NULL);
265	add_stat(STRING, &disk[i].fs_type,
266	"fs", name, "fs_type", NULL);
267	add_stat(STRING, &disk[i].mnt_point,
268	"fs", name, "mnt_point", NULL);
269	add_stat(LONG_LONG, &disk[i].size,
270	"fs", name, "size", NULL);
271	add_stat(LONG_LONG, &disk[i].used,
272	"fs", name, "used", NULL);
273	add_stat(LONG_LONG, &disk[i].avail,
274	"fs", name, "avail", NULL);
275	add_stat(LONG_LONG, &disk[i].total_inodes,
276	"fs", name, "total_inodes", NULL);
277	add_stat(LONG_LONG, &disk[i].used_inodes,
278	"fs", name, "used_inodes", NULL);
279	add_stat(LONG_LONG, &disk[i].free_inodes,
280	"fs", name, "free_inodes", NULL);
281	}
282	}
283
284	diskio = use_diffs ? get_diskio_stats_diff(&n) : get_diskio_stats(&n);
285	if (diskio != NULL) {
286	for (i = 0; i < n; i++) {
287	const char *name = diskio[i].disk_name;
288
289	add_stat(STRING, &diskio[i].disk_name,
290	"disk", name, "disk_name", NULL);
291	add_stat(LONG_LONG, &diskio[i].read_bytes,
292	"disk", name, "read_bytes", NULL);
293	add_stat(LONG_LONG, &diskio[i].write_bytes,
294	"disk", name, "write_bytes", NULL);
295	add_stat(TIME_T, &diskio[i].systime,
296	"disk", name, "systime", NULL);
297	}
298	}
299
300	proc = get_process_stats();
301	if (proc != NULL) {
302	add_stat(INT, &proc->total, "proc", "total", NULL);
303	add_stat(INT, &proc->running, "proc", "running", NULL);
304	add_stat(INT, &proc->sleeping, "proc", "sleeping", NULL);
305	add_stat(INT, &proc->stopped, "proc", "stopped", NULL);
306	add_stat(INT, &proc->zombie, "proc", "zombie", NULL);
307	}
308
309	net = use_diffs ? get_network_stats_diff(&n) : get_network_stats(&n);
310	if (net != NULL) {
311	for (i = 0; i < n; i++) {
312	const char *name = net[i].interface_name;
313
314	add_stat(STRING, &net[i].interface_name,
315	"net", name, "interface_name", NULL);
316	add_stat(LONG_LONG, &net[i].tx,
317	"net", name, "tx", NULL);
318	add_stat(LONG_LONG, &net[i].rx,
319	"net", name, "rx", NULL);
320	add_stat(TIME_T, &net[i].systime,
321	"net", name, "systime", NULL);
322	}
323	}
324
325	page = use_diffs ? get_page_stats_diff() : get_page_stats();
326	if (page != NULL) {
327	add_stat(LONG_LONG, &page->pages_pagein, "page", "in", NULL);
328	add_stat(LONG_LONG, &page->pages_pageout, "page", "out", NULL);
329	add_stat(LONG_LONG, &page->systime, "page", "systime", NULL);
330	}
331
332	qsort(stats, num_stats, sizeof *stats, stats_compare);
333	}
334
335	/* Print the value of a stat. */
336	void print_stat_value(const stat *s) {
337	void *v = s->stat;
338
339	switch (s->type) {
340	case LONG_LONG:
341	printf("%lld", (long long )v);
342	break;
343	case TIME_T:
344	/* FIXME option for formatted time? */
345	printf("%ld", (time_t )v);
346	break;
347	case FLOAT:
348	printf("%f", (float )v);
349	break;
350	case DOUBLE:
351	printf("%f", (double )v);
352	break;
353	case STRING:
354	/* FIXME escaping? */
355	printf("%s", (char *)v);
356	break;
357	case INT:
358	printf("%d", (int )v);
359	break;
360	}
361	}
362
363	/* Print the name and value of a stat. */
364	void print_stat(const stat *s) {
365	switch (display_mode) {
366	case DISPLAY_LINUX:
367	printf("%s = ", s->name);
368	break;
369	case DISPLAY_BSD:
370	printf("%s: ", s->name);
371	break;
372	case DISPLAY_MRTG:
373	case DISPLAY_PLAIN:
374	break;
375	}
376	print_stat_value(s);
377	printf("\n");
378	}
379
380	/* Print stats as specified on the provided command line. */
381	void print_stats(int argc, char **argv) {
382	int i;
383
384	if (argc == optind) {
385	/* Print all stats. */
386	for (i = 0; i < num_stats; i++)
387	print_stat(&stats[i]);
388	} else {
389	/* Print selected stats. */
390	for (i = optind; i < argc; i++) {
391	stat key;
392	const stat *s;
393
394	key.name = argv[i];
395	s = (const stat *)bsearch(&key, stats, num_stats,
396	sizeof *stats,
397	stats_compare);
398	if (s != NULL) {
399	print_stat(s);
400	}
401	}
402	}
403	}
404
405	void usage() {
406	printf("Usage: statgrab [OPTION]... [STAT]...\n"
407	"Display system statistics (all statistics by default).\n"
408	"\n");
409	printf(" -l Linux sysctl-style output (default)\n"
410	" -b BSD sysctl-style output\n"
411	" -m MRTG-compatible output\n"
412	" -u Plain output (only show values)\n"
413	" -n Display cumulative stats once (default)\n"
414	" -s Display stat differences repeatedly\n"
415	" -o Display stat differences once\n"
416	" -t DELAY When repeating, wait DELAY seconds between updates (default 1)\n"
417	" -p Display CPU usage as percentages rather than absolute values\n"
418	"\n");
419	printf("Version %s - report bugs to <%s>.\n",
420	PACKAGE_VERSION, PACKAGE_BUGREPORT);
421	exit(1);
422	}
423
424	int main(int argc, char **argv) {
425	opterr = 0;
426	while (1) {
427	int c = getopt(argc, argv, "lbmunsot:p");
428	if (c == -1)
429	break;
430	switch (c) {
431	case 'l':
432	display_mode = DISPLAY_LINUX;
433	break;
434	case 'b':
435	display_mode = DISPLAY_BSD;
436	break;
437	case 'm':
438	display_mode = DISPLAY_MRTG;
439	break;
440	case 'u':
441	display_mode = DISPLAY_PLAIN;
442	break;
443	case 'n':
444	repeat_mode = REPEAT_NONE;
445	break;
446	case 's':
447	repeat_mode = REPEAT_FOREVER;
448	break;
449	case 'o':
450	repeat_mode = REPEAT_ONCE;
451	break;
452	case 't':
453	repeat_time = atoi(optarg);
454	break;
455	case 'p':
456	use_cpu_percent = 1;
457	break;
458	default:
459	usage();
460	}
461	}
462
463	if (display_mode == DISPLAY_MRTG) {
464	if ((argc - optind) != 2)
465	die("mrtg mode: must specify exactly two stats");
466	if (repeat_mode != REPEAT_NONE)
467	die("mrtg mode: cannot repeat display");
468	}
469
470	switch (repeat_mode) {
471	case REPEAT_NONE:
472	get_stats(0);
473	print_stats(argc, argv);
474	break;
475	case REPEAT_ONCE:
476	get_stats(1);
477	sleep(repeat_time);
478	get_stats(1);
479	print_stats(argc, argv);
480	break;
481	case REPEAT_FOREVER:
482	while (1) {
483	get_stats(1);
484	print_stats(argc, argv);
485	printf("\n");
486	sleep(repeat_time);
487	}
488	}
489
490	if (display_mode == DISPLAY_MRTG) {
491	printf("\n");
492	printf("statgrab\n");
493	}
494
495	return 0;
496	}
497