mdctl.h

   1 /*
   2  * mdctl - manage Linux "md" devices aka RAID arrays.
   3  *
   4  * Copyright (C) 2001 Neil Brown <neilb@cse.unsw.edu.au>
   5  *
   6  *
   7  *    This program is free software; you can redistribute it and/or modify
   8  *    it under the terms of the GNU General Public License as published by
   9  *    the Free Software Foundation; either version 2 of the License, or
  10  *    (at your option) any later version.
  11  *
  12  *    This program is distributed in the hope that it will be useful,
  13  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *    GNU General Public License for more details.
  16  *
  17  *    You should have received a copy of the GNU General Public License
  18  *    along with this program; if not, write to the Free Software
  19  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  *    Author: Neil Brown
  22  *    Email: <neilb@cse.unsw.edu.au>
  23  *    Paper: Neil Brown
  24  *           School of Computer Science and Engineering
  25  *           The University of New South Wales
  26  *           Sydney, 2052
  27  *           Australia
  28  */
  29
  30 #define __USE_LARGEFILE64
  31 #include        <unistd.h>
  32 extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
  33
  34 #include        <sys/types.h>
  35 #include        <sys/stat.h>
  36 #include        <stdlib.h>
  37 #include        <time.h>
  38 #include        <getopt.h>
  39 #include        <fcntl.h>
  40 #include        <stdio.h>
  41 #include        <errno.h>
  42 #include        <string.h>
  43
  44 #include        <linux/kdev_t.h>
  45 #include        <linux/fs.h>
  46 #include        <sys/ioctl.h>
  47 #define MD_MAJOR 9
  48
  49
  50 #include        "md_u.h"
  51
  52 #define Name "mdctl"
  53
  54 extern char short_options[];
  55 extern struct option long_options[];
  56 extern char Version[], Usage[], Help[], Help_create[], Help_build[], Help_assemble[];
  57
  58 /* structures read from config file */
  59 /* List of mddevice names and identifiers
  60  * Identifiers can be:
  61  *    uuid=128-hex-uuid
  62  *    super-minor=decimal-minor-number-from-superblock
  63  *    devices=comma,separated,list,of,device,names,with,wildcards
  64  *
  65  * If multiple fields are present, the intersection of all matching
  66  * devices is considered
  67  */
  68 typedef struct mddev_ident_s {
  69         char *devname;
  70
  71         int uuid_set;
  72         __u32 uuid[4];
  73
  74         int super_minor;        /* -1 if not set */
  75
  76         char *devices;          /* comma separated list of device
  77                                  * names with wild cards
  78                                  */
  79
  80         char *spare_group;
  81         struct mddev_ident_s *next;
  82 } *mddev_ident_t;
  83
  84 /* List of device names - wildcards expanded */
  85 typedef struct mddev_dev_s {
  86         char *devname;
  87         struct mddev_dev_s *next;
  88 } *mddev_dev_t;
  89
  90 typedef struct mapping {
  91         char *name;
  92         int num;
  93 } mapping_t;
  94
  95 #ifndef Sendmail
  96 #define Sendmail "/usr/lib/sendmail -t"
  97 #endif
  98
  99 extern char *map_num(mapping_t *map, int num);
 100 extern int map_name(mapping_t *map, char *name);
 101 extern mapping_t r5layout[], pers[];
 102
 103 extern char *map_dev(int major, int minor);
 104
 105
 106 extern int Manage_ro(char *devname, int fd, int readonly);
 107 extern int Manage_runstop(char *devname, int fd, int runstop);
 108 extern int Manage_subdevs(char *devname, int fd,
 109                           int devcnt, char *devnames[], int devmodes[]);
 110
 111
 112 extern int Assemble(char *mddev, int mdfd,
 113                     mddev_ident_t ident,
 114                     char *conffile,
 115                     int subdevs, char *subdev[],
 116                     int readonly, int runstop,
 117                     int verbose, int force);
 118
 119 extern int Build(char *mddev, int mdfd, int chunk, int level,
 120                  int raiddisks,
 121                  int subdevs, char *subdev[]);
 122
 123
 124 extern int Create(char *mddev, int mdfd,
 125                   int chunk, int level, int layout, int size, int raiddisks, int sparedisks,
 126                   int subdevs, char *subdev[],
 127                   int runstop, int verbose, int force);
 128
 129 extern int Detail(char *dev);
 130 extern int Examine(char *dev);
 131 extern int Monitor(int num_devs, char *devlist[],
 132                   char *mailaddr, char *alert_cmd,
 133                   int period,
 134                   char *config);
 135
 136 extern int md_get_version(int fd);
 137 extern int get_linux_version();
 138 extern int parse_uuid(char *str, int uuid[4]);
 139 extern int check_ext2(int fd, char *name);
 140 extern int check_reiser(int fd, char *name);
 141 extern int check_raid(int fd, char *name);
 142
 143 extern mddev_ident_t conf_get_ident(char *, char*);
 144 extern mddev_dev_t conf_get_devs(char *);