1 #ifndef _LNSTAT_H
2 #define _LNSTAT_H
3 
4 #include <limits.h>
5 #include <sys/select.h>
6 
7 #define LNSTAT_VERSION "0.02 041002"
8 
9 #define PROC_NET_STAT	"/proc/net/stat"
10 
11 #define LNSTAT_MAX_FILES			32
12 #define LNSTAT_MAX_FIELDS_PER_LINE		32
13 #define LNSTAT_MAX_FIELD_NAME_LEN		32
14 
15 struct lnstat_file;
16 
17 struct lnstat_field {
18 	struct lnstat_file *file;
19 	unsigned int num;			/* field number in line */
20 	char name[LNSTAT_MAX_FIELD_NAME_LEN+1];
21 	unsigned long values[2];		/* two buffers for values */
22 	unsigned long result;
23 };
24 
25 struct lnstat_file {
26 	struct lnstat_file *next;
27 	char path[PATH_MAX+1];
28 	char basename[NAME_MAX+1];
29 	struct timeval last_read;		/* last time of read */
30 	struct timeval interval;		/* interval */
31 	int compat;				/* 1 == backwards compat mode */
32 	FILE *fp;
33 	unsigned int num_fields;		/* number of fields */
34 	struct lnstat_field fields[LNSTAT_MAX_FIELDS_PER_LINE];
35 };
36 
37 
38 struct lnstat_file *lnstat_scan_dir(const char *path, const int num_req_files,
39 				    const char **req_files);
40 int lnstat_update(struct lnstat_file *lnstat_files);
41 int lnstat_dump(FILE *outfd, struct lnstat_file *lnstat_files);
42 struct lnstat_field *lnstat_find_field(struct lnstat_file *lnstat_files,
43 				       const char *name);
44 #endif /* _LNSTAT_H */
45