fs/gfs2/mount.c

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
   4  *
   5  * This copyrighted material is made available to anyone wishing to use,
   6  * modify, copy, or redistribute it subject to the terms and conditions
   7  * of the GNU General Public License version 2.
   8  */
   9
  10 #include <linux/slab.h>
  11 #include <linux/spinlock.h>
  12 #include <linux/completion.h>
  13 #include <linux/buffer_head.h>
  14 #include <linux/gfs2_ondisk.h>
  15 #include <linux/parser.h>
  16
  17 #include "gfs2.h"
  18 #include "incore.h"
  19 #include "super.h"
  20 #include "sys.h"
  21 #include "util.h"
  22
  23 enum {
  24         Opt_lockproto,
  25         Opt_locktable,
  26         Opt_hostdata,
  27         Opt_spectator,
  28         Opt_ignore_local_fs,
  29         Opt_localflocks,
  30         Opt_localcaching,
  31         Opt_debug,
  32         Opt_nodebug,
  33         Opt_upgrade,
  34         Opt_acl,
  35         Opt_noacl,
  36         Opt_quota_off,
  37         Opt_quota_account,
  38         Opt_quota_on,
  39         Opt_suiddir,
  40         Opt_nosuiddir,
  41         Opt_data_writeback,
  42         Opt_data_ordered,
  43         Opt_meta,
  44         Opt_err,
  45 };
  46
  47 static const match_table_t tokens = {
  48         {Opt_lockproto, "lockproto=%s"},
  49         {Opt_locktable, "locktable=%s"},
  50         {Opt_hostdata, "hostdata=%s"},
  51         {Opt_spectator, "spectator"},
  52         {Opt_ignore_local_fs, "ignore_local_fs"},
  53         {Opt_localflocks, "localflocks"},
  54         {Opt_localcaching, "localcaching"},
  55         {Opt_debug, "debug"},
  56         {Opt_nodebug, "nodebug"},
  57         {Opt_upgrade, "upgrade"},
  58         {Opt_acl, "acl"},
  59         {Opt_noacl, "noacl"},
  60         {Opt_quota_off, "quota=off"},
  61         {Opt_quota_account, "quota=account"},
  62         {Opt_quota_on, "quota=on"},
  63         {Opt_suiddir, "suiddir"},
  64         {Opt_nosuiddir, "nosuiddir"},
  65         {Opt_data_writeback, "data=writeback"},
  66         {Opt_data_ordered, "data=ordered"},
  67         {Opt_meta, "meta"},
  68         {Opt_err, NULL}
  69 };
  70
  71 /**
  72  * gfs2_mount_args - Parse mount options
  73  * @sdp:
  74  * @data:
  75  *
  76  * Return: errno
  77  */
  78
  79 int gfs2_mount_args(struct gfs2_sbd *sdp, struct gfs2_args *args, char *options)
  80 {
  81         char *o;
  82         int token;
  83         substring_t tmp[MAX_OPT_ARGS];
  84
  85         /* Split the options into tokens with the "," character and
  86            process them */
  87
  88         while (1) {
  89                 o = strsep(&options, ",");
  90                 if (o == NULL)
  91                         break;
  92                 if (*o == '\0')
  93                         continue;
  94
  95                 token = match_token(o, tokens, tmp);
  96                 switch (token) {
  97                 case Opt_lockproto:
  98                         match_strlcpy(args->ar_lockproto, &tmp[0],
  99                                       GFS2_LOCKNAME_LEN);
 100                         break;
 101                 case Opt_locktable:
 102                         match_strlcpy(args->ar_locktable, &tmp[0],
 103                                       GFS2_LOCKNAME_LEN);
 104                         break;
 105                 case Opt_hostdata:
 106                         match_strlcpy(args->ar_hostdata, &tmp[0],
 107                                       GFS2_LOCKNAME_LEN);
 108                         break;
 109                 case Opt_spectator:
 110                         args->ar_spectator = 1;
 111                         break;
 112                 case Opt_ignore_local_fs:
 113                         args->ar_ignore_local_fs = 1;
 114                         break;
 115                 case Opt_localflocks:
 116                         args->ar_localflocks = 1;
 117                         break;
 118                 case Opt_localcaching:
 119                         args->ar_localcaching = 1;
 120                         break;
 121                 case Opt_debug:
 122                         args->ar_debug = 1;
 123                         break;
 124                 case Opt_nodebug:
 125                         args->ar_debug = 0;
 126                         break;
 127                 case Opt_upgrade:
 128                         args->ar_upgrade = 1;
 129                         break;
 130                 case Opt_acl:
 131                         args->ar_posix_acl = 1;
 132                         break;
 133                 case Opt_noacl:
 134                         args->ar_posix_acl = 0;
 135                         break;
 136                 case Opt_quota_off:
 137                         args->ar_quota = GFS2_QUOTA_OFF;
 138                         break;
 139                 case Opt_quota_account:
 140                         args->ar_quota = GFS2_QUOTA_ACCOUNT;
 141                         break;
 142                 case Opt_quota_on:
 143                         args->ar_quota = GFS2_QUOTA_ON;
 144                         break;
 145                 case Opt_suiddir:
 146                         args->ar_suiddir = 1;
 147                         break;
 148                 case Opt_nosuiddir:
 149                         args->ar_suiddir = 0;
 150                         break;
 151                 case Opt_data_writeback:
 152                         args->ar_data = GFS2_DATA_WRITEBACK;
 153                         break;
 154                 case Opt_data_ordered:
 155                         args->ar_data = GFS2_DATA_ORDERED;
 156                         break;
 157                 case Opt_meta:
 158                         args->ar_meta = 1;
 159                         break;
 160                 case Opt_err:
 161                 default:
 162                         fs_info(sdp, "invalid mount option: %s\n", o);
 163                         return -EINVAL;
 164                 }
 165         }
 166
 167         return 0;
 168 }
 169