10 #include "built_in_parsers.h"
12 #define STATFILE "/proc/stat"
14 static int cpu_parser(char *data, const char **p)
18 FILE *file = fopen(STATFILE, "r");
19 long long user, nice, sys, idle, wait, irq, softirq;
22 pr_err("Failed to open file %s\n", STATFILE);
26 if (!fgets(buf, 1024, file)) {
27 pr_err("Failed to read file %s\n", STATFILE);
32 user = dec_to_longlong(str, &str);
33 nice = dec_to_longlong(str, &str);
34 sys = dec_to_longlong(str, &str);
35 idle = dec_to_longlong(str, &str);
36 wait = dec_to_longlong(str, &str);
37 irq = dec_to_longlong(str, &str);
38 softirq = dec_to_longlong(str, &str);
40 snprintf(data, RRD_DATA_MAX_LEN, "%lld:%lld:%lld:%lld:%lld:%lld:%lld",
41 user, nice, sys, idle, wait, irq, softirq);
47 #define MEMFILE "/proc/meminfo"
49 static int mem_parser(char *data, const char **p)
51 char buf[1024], word[1024];
52 int free = 0, buffered = 0, cache = 0, active = 0, inactive = 0,
53 swapfree = 0, anon = 0, slab = 0, tables = 0, other = 0,
54 swaptotal = 0, total = 0;
55 FILE *file = fopen(MEMFILE, "r");
58 pr_err("Failed to open file %s\n", MEMFILE);
62 while (fgets(buf, 1024, file)) {
63 get_word(buf, 0, word, 1024);
65 if (!strcmp(word, "MemFree:")) {
66 free = dec_to_int(buf, NULL);
67 } else if (!strcmp(word, "MemTotal:")) {
68 total = dec_to_int(buf, NULL);
69 } else if (!strcmp(word, "Buffers:")) {
70 buffered = dec_to_int(buf, NULL);
71 } else if (!strcmp(word, "Cached:")) {
72 cache = dec_to_int(buf, NULL);
73 } else if (!strcmp(word, "Active:")) {
74 active = dec_to_int(buf, NULL);
75 } else if (!strcmp(word, "Inactive:")) {
76 inactive = dec_to_int(buf, NULL);
77 } else if (!strcmp(word, "SwapFree:")) {
78 swapfree = dec_to_int(buf, NULL);
79 } else if (!strcmp(word, "AnonPages:")) {
80 anon = dec_to_int(buf, NULL);
81 } else if (!strcmp(word, "Slab:")) {
82 slab = dec_to_int(buf, NULL);
83 } else if (!strcmp(word, "PageTables:")) {
84 tables = dec_to_int(buf, NULL);
85 } else if (!strcmp(word, "SwapTotal:")) {
86 swaptotal = dec_to_int(buf, NULL);
91 other = total - free - buffered - cache - anon - slab - tables;
93 snprintf(data, RRD_DATA_MAX_LEN, "%f:%f:%f:%f:%f:%f:%f:%f:%f:%f:%f",
104 (swaptotal - swapfree) / 1024.0);
109 int cpu_mem_parser(char *data, const char **p)
111 char cpu[1024], mem[1024];
115 snprintf(data, RRD_DATA_MAX_LEN, "%s:%s", cpu, mem);
120 static int digitemp_parser(char *data, const char **p)
122 const char digitemp_cmd[] = "/usr/bin/digitemp";
123 char *const digitemp_args[] = { "", "-o2", "-a", "-q", 0 };
126 float t1 = 0, t2 = 0, t3 = 0;
129 pid = run_piped_stream(digitemp_cmd, digitemp_args, 0, &readf, 0);
131 pr_err("Failed to parse digitemp\n");
132 sprintf(data, "U:U");
136 ret = fscanf(readf, "%f %f %f", &t1, &t2, &t3);
139 pr_err("Failed to parse digitemp output: %m\n");
140 sprintf(data, "U:U");
147 /* Read whatever the process might be still printing out */
148 while (fgets(buf, 1024, readf));
150 harvest_zombies(pid);
151 snprintf(data, RRD_DATA_MAX_LEN, "%.2f:%.2f", t3, t2);
155 static int digitemp_parser_mod(char *data, const char **p)
160 ret = digitemp_parser(buf, p);
161 snprintf(data, RRD_DATA_MAX_LEN, "U:%s", buf);
166 /* Run a command and feed the output from stdout directly to rrdtool */
167 static int script_parser(char *rrd_data, const char **parser_data)
171 void *tmp = parser_data;
174 pid = run_piped_stream(cmd[0], &cmd[1], NULL, &readf, NULL);
175 ret = fread(rrd_data, 1, RRD_DATA_MAX_LEN, readf);
177 pr_info("Read %d bytes :%s\n", ret, rrd_data);
180 harvest_zombies(pid);
187 long long rx_packets;
189 long long tx_packets;
192 #define PROC_NETDEV "/proc/net/dev"
194 static int get_iface_stats(const char *iface, struct iface_stats *stat)
202 netdev = fopen(PROC_NETDEV, "r");
204 if (netdev == NULL) {
206 pr_err("Failed to open file %s: %d (%m)\n",
211 while (fgets(buf, sizeof(buf), netdev)) {
212 get_word(buf, &str, if_name, sizeof(if_name));
214 /* Remove the ':' at the end of the if_name */
215 if_name[strlen(if_name) - 1] = 0;
216 if (strncmp(iface, if_name, sizeof(if_name)))
219 stat->rx_bytes = dec_to_longlong(str, &str);
220 stat->rx_packets = dec_to_longlong(str, &str);
221 /* errs */ dec_to_longlong(str, &str);
222 /* drop */ dec_to_longlong(str, &str);
223 /* fifo */ dec_to_longlong(str, &str);
224 /* frame */ dec_to_longlong(str, &str);
225 /* compressed */ dec_to_longlong(str, &str);
226 /* multicast */ dec_to_longlong(str, &str);
227 stat->tx_bytes = dec_to_longlong(str, &str);
228 stat->tx_packets = dec_to_longlong(str, &str);
230 pr_info("rx_b %lld rx_p %lld tx_b %lld tx_p %lld\n",
231 stat->rx_bytes, stat->rx_packets,
232 stat->tx_bytes, stat->tx_packets);
237 pr_err("Interface %s not found\n", iface);
241 int netstats_parser(char *rrd_data, const char **parser_data)
243 struct iface_stats stat;
244 const char **iface_name = parser_data;
245 int max_str = RRD_DATA_MAX_LEN;
249 pr_err("No device names specified\n");
254 pr_info("getting data for iface %s\n", *iface_name);
255 ret = get_iface_stats(*iface_name, &stat);
258 ret = snprintf(rrd_data, max_str, "%lld:%lld:%lld:%lld",
259 stat.rx_bytes, stat.rx_packets,
260 stat.tx_bytes, stat.tx_packets);
262 ret = snprintf(rrd_data, max_str, "U:U:U:U");
272 ret = snprintf(rrd_data, max_str, ":");
280 static struct parser_info built_in_parsers[] = {
291 .parse = cpu_mem_parser,
295 .parse = digitemp_parser,
298 .name = "digitemp_mod",
299 .parse = digitemp_parser_mod,
303 .parse = script_parser,
307 .parse = netstats_parser,
311 int register_built_in_parsers(void)
315 for (i = 0; i < ARRAY_SIZE(built_in_parsers); i++) {
316 ret = register_parser(&built_in_parsers[i]);