39 static int scan_lines(struct lnstat_file *lf, int i)  in scan_lines()  argument
44 	for (j = 0; j < lf->num_fields; j++)  in scan_lines()
45 		lf->fields[j].values[i] = 0;  in scan_lines()
47 	rewind(lf->fp);  in scan_lines()
49 	if (!lf->compat && !fgets(buf, sizeof(buf)-1, lf->fp))  in scan_lines()
52 	while (!feof(lf->fp) && fgets(buf, sizeof(buf)-1, lf->fp)) {  in scan_lines()
57 		gettimeofday(&lf->last_read, NULL);  in scan_lines()
59 		for (j = 0; j < lf->num_fields; j++) {  in scan_lines()
63 				lf->fields[j].values[i] = f;  in scan_lines()
65 				lf->fields[j].values[i] += f;  in scan_lines()
88 	struct lnstat_file *lf;  in lnstat_update()  local
93 	for (lf = lnstat_files; lf; lf = lf->next) {  in lnstat_update()
94 		if (time_after(&lf->last_read, &lf->interval, &tv)) {  in lnstat_update()
98 			scan_lines(lf, 1);  in lnstat_update()
100 			for (i = 0, lfi = &lf->fields[i];  in lnstat_update()
101 			     i < lf->num_fields; i++, lfi = &lf->fields[i]) {  in lnstat_update()
106 							/ lf->interval.tv_sec;  in lnstat_update()
109 			scan_lines(lf, 0);  in lnstat_update()
117 static int __lnstat_scan_fields(struct lnstat_file *lf, char *buf)  in __lnstat_scan_fields()  argument
124 		lf->fields[i].file = lf;  in __lnstat_scan_fields()
125 		strncpy(lf->fields[i].name, tok, LNSTAT_MAX_FIELD_NAME_LEN);  in __lnstat_scan_fields()
130 			lf->num_fields = i+1;  in __lnstat_scan_fields()
137 static int lnstat_scan_fields(struct lnstat_file *lf)  in lnstat_scan_fields()  argument
141 	rewind(lf->fp);  in lnstat_scan_fields()
142 	if (!fgets(buf, sizeof(buf)-1, lf->fp))  in lnstat_scan_fields()
145 	return __lnstat_scan_fields(lf, buf);  in lnstat_scan_fields()
149 static int lnstat_scan_compat_rtstat_fields(struct lnstat_file *lf)  in lnstat_scan_compat_rtstat_fields()  argument
156 	return __lnstat_scan_fields(lf, buf);  in lnstat_scan_compat_rtstat_fields()
174 	struct lnstat_file *lf;  in alloc_and_open()  local
177 	lf = calloc(1, sizeof(*lf));  in alloc_and_open()
178 	if (!lf) {  in alloc_and_open()
184 	snprintf(lf->basename, sizeof(lf->basename), "%s", file);  in alloc_and_open()
185 	snprintf(lf->path, sizeof(lf->path), "%s/%s", path, file);  in alloc_and_open()
188 	lf->interval.tv_sec = 1;  in alloc_and_open()
191 	lf->fp = fopen(lf->path, "r");  in alloc_and_open()
192 	if (!lf->fp) {  in alloc_and_open()
193 		perror(lf->path);  in alloc_and_open()
194 		free(lf);  in alloc_and_open()
198 	return lf;  in alloc_and_open()
215 		struct lnstat_file *lf;  in lnstat_scan_dir()  local
234 		lf = alloc_and_open("/proc/net", "rt_cache_stat");  in lnstat_scan_dir()
235 		if (!lf)  in lnstat_scan_dir()
237 		lf->compat = 1;  in lnstat_scan_dir()
238 		strncpy(lf->basename, "rt_cache", sizeof(lf->basename));  in lnstat_scan_dir()
241 		if (lnstat_scan_compat_rtstat_fields(lf) < 0)  in lnstat_scan_dir()
244 		lf->next = lnstat_files;  in lnstat_scan_dir()
245 		lnstat_files = lf;  in lnstat_scan_dir()
250 		struct lnstat_file *lf;  in lnstat_scan_dir()  local
259 		lf = alloc_and_open(path, de->d_name);  in lnstat_scan_dir()
260 		if (!lf) {  in lnstat_scan_dir()
266 		if (lnstat_scan_fields(lf) < 0) {  in lnstat_scan_dir()
272 		lf->next = lnstat_files;  in lnstat_scan_dir()
273 		lnstat_files = lf;  in lnstat_scan_dir()
282 	struct lnstat_file *lf;  in lnstat_dump()  local
284 	for (lf = lnstat_files; lf; lf = lf->next) {  in lnstat_dump()
287 		fprintf(outfd, "%s:\n", lf->path);  in lnstat_dump()
289 		for (i = 0; i < lf->num_fields; i++)  in lnstat_dump()
290 			fprintf(outfd, "\t%2u: %s\n", i+1, lf->fields[i].name);  in lnstat_dump()
299 	struct lnstat_file *lf;  in lnstat_find_field()  local
313 	for (lf = lnstat_files; lf; lf = lf->next) {  in lnstat_find_field()
316 		if (file && strcmp(file, lf->basename))  in lnstat_find_field()
319 		for (i = 0; i < lf->num_fields; i++) {  in lnstat_find_field()
320 			if (!strcmp(field, lf->fields[i].name)) {  in lnstat_find_field()
321 				ret = &lf->fields[i];  in lnstat_find_field()