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-rw-r--r--misc/lnstat.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/misc/lnstat.h b/misc/lnstat.h
new file mode 100644
index 0000000..433599c
--- /dev/null
+++ b/misc/lnstat.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LNSTAT_H
+#define _LNSTAT_H
+
+#include <limits.h>
+#include <sys/select.h>
+
+#define PROC_NET_STAT "/proc/net/stat"
+
+#define LNSTAT_MAX_FILES 32
+#define LNSTAT_MAX_FIELDS_PER_LINE 32
+#define LNSTAT_MAX_FIELD_NAME_LEN 32
+
+struct lnstat_file;
+
+struct lnstat_field {
+ struct lnstat_file *file;
+ unsigned int num; /* field number in line */
+ char name[LNSTAT_MAX_FIELD_NAME_LEN+1];
+ unsigned long values[2]; /* two buffers for values */
+ unsigned long result;
+};
+
+struct lnstat_file {
+ struct lnstat_file *next;
+ char path[PATH_MAX+1];
+ char basename[NAME_MAX+1];
+ struct timeval last_read; /* last time of read */
+ struct timeval interval; /* interval */
+ int compat; /* 1 == backwards compat mode */
+ FILE *fp;
+ unsigned int num_fields; /* number of fields */
+ struct lnstat_field fields[LNSTAT_MAX_FIELDS_PER_LINE];
+};
+
+
+struct lnstat_file *lnstat_scan_dir(const char *path, const int num_req_files,
+ const char **req_files);
+int lnstat_update(struct lnstat_file *lnstat_files);
+int lnstat_dump(FILE *outfd, struct lnstat_file *lnstat_files);
+struct lnstat_field *lnstat_find_field(struct lnstat_file *lnstat_files,
+ const char *name);
+#endif /* _LNSTAT_H */