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1 /* lnstat - Unified linux network statistics
3 * Copyright (C) 2004 by Harald Welte <laforge@gnumonks.org>
5 * Development of this code was funded by Astaro AG, http://www.astaro.com/
7 * Based on original concept and ideas from predecessor rtstat.c:
9 * Copyright 2001 by Robert Olsson <robert.olsson@its.uu.se>
10 * Uppsala University, Sweden
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
19 /* Maximum number of fields that can be displayed */
22 /* Maximum number of header lines */
25 /* default field width if none specified */
26 #define FIELD_WIDTH_DEFAULT 8
27 #define FIELD_WIDTH_MAX 20
29 #define DEFAULT_INTERVAL 2
31 #define HDR_LINE_LENGTH (MAX_FIELDS*FIELD_WIDTH_MAX)
41 static struct option opts
[] = {
42 { "version", 0, NULL
, 'V' },
43 { "count", 1, NULL
, 'c' },
44 { "dump", 1, NULL
, 'd' },
45 { "file", 1, NULL
, 'f' },
46 { "help", 0, NULL
, 'h' },
47 { "interval", 1, NULL
, 'i' },
48 { "key", 1, NULL
, 'k' },
49 { "subject", 1, NULL
, 's' },
50 { "width", 1, NULL
, 'w' },
53 static int usage(char *name
, int exit_code
)
55 fprintf(stderr
, "%s Version %s\n", name
, LNSTAT_VERSION
);
56 fprintf(stderr
, "Copyright (C) 2004 by Harald Welte "
57 "<laforge@gnumonks.org>\n");
58 fprintf(stderr
, "This program is free software licensed under GNU GPLv2"
59 "\nwith ABSOLUTELY NO WARRANTY.\n\n");
60 fprintf(stderr
, "Parameters:\n");
61 fprintf(stderr
, "\t-V --version\t\tPrint Version of Program\n");
62 fprintf(stderr
, "\t-c --count <count>\t"
63 "Print <count> number of intervals\n");
64 fprintf(stderr
, "\t-d --dumpt\t\t"
65 "Dump list of available files/keys\n");
66 fprintf(stderr
, "\t-f --file <file>\tStatistics file to use\n");
67 fprintf(stderr
, "\t-h --help\t\tThis help message\n");
68 fprintf(stderr
, "\t-i --interval <intv>\t"
69 "Set interval to 'intv' seconds\n");
70 fprintf(stderr
, "\t-k --keys k,k,k,...\tDisplay only keys specified\n");
71 fprintf(stderr
, "\t-s --subject [0-2]\t?\n");
72 fprintf(stderr
, "\t-w --width n,n,n,...\tWidth for each field\n");
73 fprintf(stderr
, "\n");
80 struct lnstat_field
*lf
;
88 struct field_param params
[MAX_FIELDS
];
91 static void print_line(FILE *of
, const struct lnstat_file
*lnstat_files
,
92 const struct field_params
*fp
)
96 for (i
= 0; i
< fp
->num
; i
++) {
97 struct lnstat_field
*lf
= fp
->params
[i
].lf
;
100 snprintf(formatbuf
, sizeof(formatbuf
)-1, "%%%ulu|",
101 fp
->params
[i
].print
.width
);
102 fprintf(of
, formatbuf
, lf
->result
);
107 /* find lnstat_field according to user specification */
108 static int map_field_params(struct lnstat_file
*lnstat_files
,
109 struct field_params
*fps
, int interval
)
112 struct lnstat_file
*lf
;
114 /* no field specification on commandline, need to build default */
116 for (lf
= lnstat_files
; lf
; lf
= lf
->next
) {
117 for (i
= 0; i
< lf
->num_fields
; i
++) {
118 fps
->params
[j
].lf
= &lf
->fields
[i
];
119 fps
->params
[j
].lf
->file
->interval
.tv_sec
=
121 if (!fps
->params
[j
].print
.width
)
122 fps
->params
[j
].print
.width
=
131 for (i
= 0; i
< fps
->num
; i
++) {
132 fps
->params
[i
].lf
= lnstat_find_field(lnstat_files
,
133 fps
->params
[i
].name
);
134 if (!fps
->params
[i
].lf
) {
135 fprintf(stderr
, "Field `%s' unknown\n",
136 fps
->params
[i
].name
);
139 fps
->params
[i
].lf
->file
->interval
.tv_sec
= interval
;
140 if (!fps
->params
[i
].print
.width
)
141 fps
->params
[i
].print
.width
= FIELD_WIDTH_DEFAULT
;
148 char *hdr
[HDR_LINES
];
151 static struct table_hdr
*build_hdr_string(struct lnstat_file
*lnstat_files
,
152 struct field_params
*fps
,
156 static struct table_hdr th
;
159 for (i
= 0; i
< HDR_LINES
; i
++) {
160 th
.hdr
[i
] = malloc(HDR_LINE_LENGTH
);
161 memset(th
.hdr
[i
], 0, sizeof(th
.hdr
[i
]));
164 for (i
= 0; i
< fps
->num
; i
++) {
165 char *cname
, *fname
= fps
->params
[i
].lf
->name
;
167 unsigned int width
= fps
->params
[i
].print
.width
;
169 snprintf(fmt
, sizeof(fmt
)-1, "%%%u.%us|", width
, width
);
171 snprintf(th
.hdr
[0]+ofs
, width
+2, fmt
,
172 fps
->params
[i
].lf
->file
->basename
);
175 for (h
= 1; h
< HDR_LINES
; h
++) {
176 if (cname
- fname
>= strlen(fname
))
177 snprintf(th
.hdr
[h
]+ofs
, width
+2, fmt
, "");
180 snprintf(th
.hdr
[h
]+ofs
, width
+2, fmt
, cname
);
187 for (h
= 1; h
<= th
.num_lines
; h
++) {
188 for (i
= 0; i
< ofs
; i
++) {
189 if (th
.hdr
[h
][i
] == '\0')
197 static int print_hdr(FILE *of
, struct table_hdr
*th
)
201 for (i
= 0; i
< th
->num_lines
; i
++) {
202 fputs(th
->hdr
[i
], of
);
209 int main(int argc
, char **argv
)
211 struct lnstat_file
*lnstat_files
;
212 const char *basename
;
214 int interval
= DEFAULT_INTERVAL
;
219 } mode
= MODE_NORMAL
;
221 unsigned long count
= 1;
222 static struct field_params fp
;
223 int num_req_files
= 0;
224 char *req_files
[LNSTAT_MAX_FILES
];
226 /* backwards compatibility mode for old tools */
227 basename
= strrchr(argv
[0], '/');
229 basename
+= 1; /* name after slash */
231 basename
= argv
[0]; /* no slash */
233 if (!strcmp(basename
, "rtstat")) {
234 /* rtstat compatibility mode */
235 req_files
[0] = "rt_cache";
237 } else if (!strcmp(basename
, "ctstat")) {
238 /* ctstat compatibility mode */
239 req_files
[0] = "ip_conntrack";
243 while ((c
= getopt_long(argc
, argv
,"Vc:df:h?i:k:s:w:",
244 opts
, NULL
)) != -1) {
250 count
= strtoul(optarg
, NULL
, 0);
256 req_files
[num_req_files
++] = strdup(optarg
);
263 sscanf(optarg
, "%u", &interval
);
266 tmp
= strdup(optarg
);
269 for (tok
= strtok(tmp
, ",");
271 tok
= strtok(NULL
, ",")) {
272 if (fp
.num
>= MAX_FIELDS
)
274 fp
.params
[fp
.num
++].name
= tok
;
278 sscanf(optarg
, "%u", &hdr
);
281 tmp
= strdup(optarg
);
285 for (tok
= strtok(tmp
, ",");
287 tok
= strtok(NULL
, ",")) {
288 len
= strtoul(tok
, NULL
, 0);
289 if (len
> FIELD_WIDTH_MAX
)
290 len
= FIELD_WIDTH_MAX
;
291 fp
.params
[i
].print
.width
= len
;
295 for (i
= 0; i
< MAX_FIELDS
; i
++)
296 fp
.params
[i
].print
.width
= len
;
305 lnstat_files
= lnstat_scan_dir(PROC_NET_STAT
, num_req_files
,
306 (const char **) req_files
);
310 struct table_hdr
*header
;
312 lnstat_dump(stderr
, lnstat_files
);
316 if (!map_field_params(lnstat_files
, &fp
, interval
))
319 header
= build_hdr_string(lnstat_files
, &fp
, 80);
326 for (i
= 0; i
< count
; i
++) {
327 if ((hdr
> 1 && (! (i
% 20))) || (hdr
== 1 && i
== 0))
328 print_hdr(stdout
, header
);
329 lnstat_update(lnstat_files
);
330 print_line(stdout
, lnstat_files
, &fp
);