SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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/lm_interface.h>
  16 #include <linux/parser.h>
  17
  18 #include "gfs2.h"
  19 #include "incore.h"
  20 #include "super.h"
  21 #include "sys.h"
  22 #include "util.h"
  23
  24 enum {
  25         Opt_lockproto,
  26         Opt_locktable,
  27         Opt_hostdata,
  28         Opt_spectator,
  29         Opt_ignore_local_fs,
  30         Opt_localflocks,
  31         Opt_localcaching,
  32         Opt_debug,
  33         Opt_nodebug,
  34         Opt_upgrade,
  35         Opt_acl,
  36         Opt_noacl,
  37         Opt_quota_off,
  38         Opt_quota_account,
  39         Opt_quota_on,
  40         Opt_suiddir,
  41         Opt_nosuiddir,
  42         Opt_data_writeback,
  43         Opt_data_ordered,
  44         Opt_meta,
  45         Opt_err,
  46 };
  47
  48 static const match_table_t tokens = {
  49         {Opt_lockproto, "lockproto=%s"},
  50         {Opt_locktable, "locktable=%s"},
  51         {Opt_hostdata, "hostdata=%s"},
  52         {Opt_spectator, "spectator"},
  53         {Opt_ignore_local_fs, "ignore_local_fs"},
  54         {Opt_localflocks, "localflocks"},
  55         {Opt_localcaching, "localcaching"},
  56         {Opt_debug, "debug"},
  57         {Opt_nodebug, "nodebug"},
  58         {Opt_upgrade, "upgrade"},
  59         {Opt_acl, "acl"},
  60         {Opt_noacl, "noacl"},
  61         {Opt_quota_off, "quota=off"},
  62         {Opt_quota_account, "quota=account"},
  63         {Opt_quota_on, "quota=on"},
  64         {Opt_suiddir, "suiddir"},
  65         {Opt_nosuiddir, "nosuiddir"},
  66         {Opt_data_writeback, "data=writeback"},
  67         {Opt_data_ordered, "data=ordered"},
  68         {Opt_meta, "meta"},
  69         {Opt_err, NULL}
  70 };
  71
  72 /**
  73  * gfs2_mount_args - Parse mount options
  74  * @sdp:
  75  * @data:
  76  *
  77  * Return: errno
  78  */
  79
  80 int gfs2_mount_args(struct gfs2_sbd *sdp, struct gfs2_args *args, char *options)
  81 {
  82         char *o;
  83         int token;
  84         substring_t tmp[MAX_OPT_ARGS];
  85
  86         /* Split the options into tokens with the "," character and
  87            process them */
  88
  89         while (1) {
  90                 o = strsep(&options, ",");
  91                 if (o == NULL)
  92                         break;
  93                 if (*o == '\0')
  94                         continue;
  95
  96                 token = match_token(o, tokens, tmp);
  97                 switch (token) {
  98                 case Opt_lockproto:
  99                         match_strlcpy(args->ar_lockproto, &tmp[0],
 100                                       GFS2_LOCKNAME_LEN);
 101                         break;
 102                 case Opt_locktable:
 103                         match_strlcpy(args->ar_locktable, &tmp[0],
 104                                       GFS2_LOCKNAME_LEN);
 105                         break;
 106                 case Opt_hostdata:
 107                         match_strlcpy(args->ar_hostdata, &tmp[0],
 108                                       GFS2_LOCKNAME_LEN);
 109                         break;
 110                 case Opt_spectator:
 111                         args->ar_spectator = 1;
 112                         break;
 113                 case Opt_ignore_local_fs:
 114                         args->ar_ignore_local_fs = 1;
 115                         break;
 116                 case Opt_localflocks:
 117                         args->ar_localflocks = 1;
 118                         break;
 119                 case Opt_localcaching:
 120                         args->ar_localcaching = 1;
 121                         break;
 122                 case Opt_debug:
 123                         args->ar_debug = 1;
 124                         break;
 125                 case Opt_nodebug:
 126                         args->ar_debug = 0;
 127                         break;
 128                 case Opt_upgrade:
 129                         args->ar_upgrade = 1;
 130                         break;
 131                 case Opt_acl:
 132                         args->ar_posix_acl = 1;
 133                         break;
 134                 case Opt_noacl:
 135                         args->ar_posix_acl = 0;
 136                         break;
 137                 case Opt_quota_off:
 138                         args->ar_quota = GFS2_QUOTA_OFF;
 139                         break;
 140                 case Opt_quota_account:
 141                         args->ar_quota = GFS2_QUOTA_ACCOUNT;
 142                         break;
 143                 case Opt_quota_on:
 144                         args->ar_quota = GFS2_QUOTA_ON;
 145                         break;
 146                 case Opt_suiddir:
 147                         args->ar_suiddir = 1;
 148                         break;
 149                 case Opt_nosuiddir:
 150                         args->ar_suiddir = 0;
 151                         break;
 152                 case Opt_data_writeback:
 153                         args->ar_data = GFS2_DATA_WRITEBACK;
 154                         break;
 155                 case Opt_data_ordered:
 156                         args->ar_data = GFS2_DATA_ORDERED;
 157                         break;
 158                 case Opt_meta:
 159                         args->ar_meta = 1;
 160                         break;
 161                 case Opt_err:
 162                 default:
 163                         fs_info(sdp, "invalid mount option: %s\n", o);
 164                         return -EINVAL;
 165                 }
 166         }
 167
 168         return 0;
 169 }
 170