mon_tools/mon_fsstatd.h

   1 /*
   2  * mon_fsstatd
   3  * Author: Melissa Howland <melissa.howland@us.ibm.com>
   4  *
   5  * Copyright IBM Corp. 2006.
   6  *
   7  * Definitions used by mon_fsstatd.
   8  */
   9
  10
  11 #ifndef __mon_fsstatd_h__
  12 #define __mon_fsstatd_h__
  13
  14 #include <getopt.h>
  15 #include <linux/types.h>
  16 #include <sys/ioctl.h>
  17 #include "../include/zt_common.h"
  18
  19 /* mon_function values */
  20 #define MONWRITE_START_INTERVAL 0x00    /* start interval recording */
  21 #define MONWRITE_STOP_INTERVAL  0x01    /* stop interval or config recording */
  22
  23 #define MAX_REC_LEN 4010
  24 #define MAX_NAMES_LEN 3900
  25 #define MAX_NAME_LEN 1800
  26 #define MAX_DIR_LEN  1800
  27 #define MAX_TYPE_LEN 256
  28 #define FSSTATD_APPLID 0x01
  29 /* Assume usually lengths of name, dir and type <= 512 bytes total */
  30 #define SMALL_MON_RECORD_LEN 602
  31 #define LARGE_MON_RECORD_LEN 4010
  32
  33 struct monwrite_hdr {
  34         unsigned char   mon_function;
  35         unsigned short  applid;
  36         unsigned char   record_num;
  37         unsigned short  version;
  38         unsigned short  release;
  39         unsigned short  mod_level;
  40         unsigned short  datalen;
  41         unsigned char   hdrlen;
  42
  43 } __attribute__((packed));
  44
  45 struct fsstatd_hdr {
  46         __u64   time_stamp;
  47         __u16   fsstat_data_len;
  48         __u16   fsstat_data_offset;
  49 } __attribute__((packed));
  50
  51 struct fsstatd_data {
  52         __u64   fs_bsize;
  53         __u64   fs_frsize;
  54         __u64   fs_blocks;
  55         __u64   fs_bfree;
  56         __u64   fs_bavail;
  57         __u64   fs_files;
  58         __u64   fs_ffree;
  59         __u64   fs_favail;
  60         __u64   fs_flag;
  61 };
  62
  63 static struct option options[] = {
  64         {"help", no_argument, NULL, 'h'},
  65         {"version", no_argument, NULL, 'v'},
  66         {"attach", no_argument, NULL, 'a'},
  67         {"interval", required_argument, NULL, 'i'},
  68         {NULL, 0, NULL, 0}
  69 };
  70
  71 static const char opt_string[] = "+hvai:";
  72
  73 static const char help_text[] =
  74         "mon_fsstatd: Daemon that writes file system utilization information\n"
  75         "to the z/VM monitor stream.\n"
  76         "\n"
  77         "Usage: mon_fstatd [OPTIONS]\n"
  78         "\n"
  79         "Options:\n"
  80         "-h, --help               Print this help, then exit\n"
  81         "-v, --version            Print version information, then exit\n"
  82         "-a, --attach             Run in foreground\n"
  83         "-i, --interval=<seconds> Sample interval\n";
  84 #endif
  85