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      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