Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/sdcardfs/main.c |
| 3 | * |
| 4 | * Copyright (c) 2013 Samsung Electronics Co. Ltd |
| 5 | * Authors: Daeho Jeong, Woojoong Lee, Seunghwan Hyun, |
| 6 | * Sunghwan Yun, Sungjong Seo |
| 7 | * |
| 8 | * This program has been developed as a stackable file system based on |
| 9 | * the WrapFS which written by |
| 10 | * |
| 11 | * Copyright (c) 1998-2011 Erez Zadok |
| 12 | * Copyright (c) 2009 Shrikar Archak |
| 13 | * Copyright (c) 2003-2011 Stony Brook University |
| 14 | * Copyright (c) 2003-2011 The Research Foundation of SUNY |
| 15 | * |
| 16 | * This file is dual licensed. It may be redistributed and/or modified |
| 17 | * under the terms of the Apache 2.0 License OR version 2 of the GNU |
| 18 | * General Public License. |
| 19 | */ |
| 20 | |
| 21 | #include "sdcardfs.h" |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/types.h> |
| 24 | #include <linux/parser.h> |
| 25 | |
| 26 | enum { |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 27 | Opt_fsuid, |
| 28 | Opt_fsgid, |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 29 | Opt_gid, |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 30 | Opt_debug, |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 31 | Opt_lower_fs, |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 32 | Opt_mask, |
| 33 | Opt_multiuser, // May need? |
| 34 | Opt_userid, |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 35 | Opt_reserved_mb, |
| 36 | Opt_err, |
| 37 | }; |
| 38 | |
| 39 | static const match_table_t sdcardfs_tokens = { |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 40 | {Opt_fsuid, "fsuid=%u"}, |
| 41 | {Opt_fsgid, "fsgid=%u"}, |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 42 | {Opt_gid, "gid=%u"}, |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 43 | {Opt_debug, "debug"}, |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 44 | {Opt_lower_fs, "lower_fs=%s"}, |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 45 | {Opt_mask, "mask=%u"}, |
| 46 | {Opt_userid, "userid=%d"}, |
| 47 | {Opt_multiuser, "multiuser"}, |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 48 | {Opt_reserved_mb, "reserved_mb=%u"}, |
| 49 | {Opt_err, NULL} |
| 50 | }; |
| 51 | |
| 52 | static int parse_options(struct super_block *sb, char *options, int silent, |
| 53 | int *debug, struct sdcardfs_mount_options *opts) |
| 54 | { |
| 55 | char *p; |
| 56 | substring_t args[MAX_OPT_ARGS]; |
| 57 | int option; |
| 58 | char *string_option; |
| 59 | |
| 60 | /* by default, we use AID_MEDIA_RW as uid, gid */ |
| 61 | opts->fs_low_uid = AID_MEDIA_RW; |
| 62 | opts->fs_low_gid = AID_MEDIA_RW; |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 63 | opts->mask = 0; |
| 64 | opts->multiuser = false; |
| 65 | opts->fs_user_id = 0; |
| 66 | opts->gid = 0; |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 67 | /* by default, we use LOWER_FS_EXT4 as lower fs type */ |
| 68 | opts->lower_fs = LOWER_FS_EXT4; |
| 69 | /* by default, 0MB is reserved */ |
| 70 | opts->reserved_mb = 0; |
| 71 | |
| 72 | *debug = 0; |
| 73 | |
| 74 | if (!options) |
| 75 | return 0; |
| 76 | |
| 77 | while ((p = strsep(&options, ",")) != NULL) { |
| 78 | int token; |
| 79 | if (!*p) |
| 80 | continue; |
| 81 | |
| 82 | token = match_token(p, sdcardfs_tokens, args); |
| 83 | |
| 84 | switch (token) { |
| 85 | case Opt_debug: |
| 86 | *debug = 1; |
| 87 | break; |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 88 | case Opt_fsuid: |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 89 | if (match_int(&args[0], &option)) |
| 90 | return 0; |
| 91 | opts->fs_low_uid = option; |
| 92 | break; |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 93 | case Opt_fsgid: |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 94 | if (match_int(&args[0], &option)) |
| 95 | return 0; |
| 96 | opts->fs_low_gid = option; |
| 97 | break; |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 98 | case Opt_gid: |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 99 | if (match_int(&args[0], &option)) |
| 100 | return 0; |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 101 | opts->gid = option; |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 102 | break; |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 103 | case Opt_userid: |
| 104 | if (match_int(&args[0], &option)) |
| 105 | return 0; |
| 106 | opts->fs_user_id = option; |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 107 | break; |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 108 | case Opt_mask: |
| 109 | if (match_int(&args[0], &option)) |
| 110 | return 0; |
| 111 | opts->mask = option; |
| 112 | break; |
| 113 | case Opt_multiuser: |
| 114 | opts->multiuser = true; |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 115 | break; |
| 116 | case Opt_lower_fs: |
| 117 | string_option = match_strdup(&args[0]); |
| 118 | if (!strcmp("ext4", string_option)) { |
| 119 | opts->lower_fs = LOWER_FS_EXT4; |
| 120 | } else if (!strcmp("fat", string_option)) { |
| 121 | opts->lower_fs = LOWER_FS_FAT; |
| 122 | } else { |
| 123 | kfree(string_option); |
| 124 | goto invalid_option; |
| 125 | } |
| 126 | kfree(string_option); |
| 127 | break; |
| 128 | case Opt_reserved_mb: |
| 129 | if (match_int(&args[0], &option)) |
| 130 | return 0; |
| 131 | opts->reserved_mb = option; |
| 132 | break; |
| 133 | /* unknown option */ |
| 134 | default: |
| 135 | invalid_option: |
| 136 | if (!silent) { |
| 137 | printk( KERN_ERR "Unrecognized mount option \"%s\" " |
| 138 | "or missing value", p); |
| 139 | } |
| 140 | return -EINVAL; |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | if (*debug) { |
| 145 | printk( KERN_INFO "sdcardfs : options - debug:%d\n", *debug); |
| 146 | printk( KERN_INFO "sdcardfs : options - uid:%d\n", |
| 147 | opts->fs_low_uid); |
| 148 | printk( KERN_INFO "sdcardfs : options - gid:%d\n", |
| 149 | opts->fs_low_gid); |
| 150 | } |
| 151 | |
| 152 | return 0; |
| 153 | } |
| 154 | |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 155 | #if 0 |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 156 | /* |
| 157 | * our custom d_alloc_root work-alike |
| 158 | * |
| 159 | * we can't use d_alloc_root if we want to use our own interpose function |
| 160 | * unchanged, so we simply call our own "fake" d_alloc_root |
| 161 | */ |
| 162 | static struct dentry *sdcardfs_d_alloc_root(struct super_block *sb) |
| 163 | { |
| 164 | struct dentry *ret = NULL; |
| 165 | |
| 166 | if (sb) { |
| 167 | static const struct qstr name = { |
| 168 | .name = "/", |
| 169 | .len = 1 |
| 170 | }; |
| 171 | |
| 172 | ret = d_alloc(NULL, &name); |
| 173 | if (ret) { |
| 174 | d_set_d_op(ret, &sdcardfs_ci_dops); |
| 175 | ret->d_sb = sb; |
| 176 | ret->d_parent = ret; |
| 177 | } |
| 178 | } |
| 179 | return ret; |
| 180 | } |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 181 | #endif |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 182 | |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 183 | DEFINE_MUTEX(sdcardfs_super_list_lock); |
| 184 | LIST_HEAD(sdcardfs_super_list); |
| 185 | EXPORT_SYMBOL_GPL(sdcardfs_super_list_lock); |
| 186 | EXPORT_SYMBOL_GPL(sdcardfs_super_list); |
| 187 | |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 188 | /* |
| 189 | * There is no need to lock the sdcardfs_super_info's rwsem as there is no |
| 190 | * way anyone can have a reference to the superblock at this point in time. |
| 191 | */ |
| 192 | static int sdcardfs_read_super(struct super_block *sb, const char *dev_name, |
| 193 | void *raw_data, int silent) |
| 194 | { |
| 195 | int err = 0; |
| 196 | int debug; |
| 197 | struct super_block *lower_sb; |
| 198 | struct path lower_path; |
| 199 | struct sdcardfs_sb_info *sb_info; |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 200 | struct inode *inode; |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 201 | |
| 202 | printk(KERN_INFO "sdcardfs version 2.0\n"); |
| 203 | |
| 204 | if (!dev_name) { |
| 205 | printk(KERN_ERR |
| 206 | "sdcardfs: read_super: missing dev_name argument\n"); |
| 207 | err = -EINVAL; |
| 208 | goto out; |
| 209 | } |
| 210 | |
| 211 | printk(KERN_INFO "sdcardfs: dev_name -> %s\n", dev_name); |
| 212 | printk(KERN_INFO "sdcardfs: options -> %s\n", (char *)raw_data); |
| 213 | |
| 214 | /* parse lower path */ |
| 215 | err = kern_path(dev_name, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, |
| 216 | &lower_path); |
| 217 | if (err) { |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 218 | printk(KERN_ERR "sdcardfs: error accessing lower directory '%s'\n", dev_name); |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 219 | goto out; |
| 220 | } |
| 221 | |
| 222 | /* allocate superblock private data */ |
| 223 | sb->s_fs_info = kzalloc(sizeof(struct sdcardfs_sb_info), GFP_KERNEL); |
| 224 | if (!SDCARDFS_SB(sb)) { |
| 225 | printk(KERN_CRIT "sdcardfs: read_super: out of memory\n"); |
| 226 | err = -ENOMEM; |
| 227 | goto out_free; |
| 228 | } |
| 229 | |
| 230 | sb_info = sb->s_fs_info; |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 231 | /* parse options */ |
| 232 | err = parse_options(sb, raw_data, silent, &debug, &sb_info->options); |
| 233 | if (err) { |
| 234 | printk(KERN_ERR "sdcardfs: invalid options\n"); |
| 235 | goto out_freesbi; |
| 236 | } |
| 237 | |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 238 | /* set the lower superblock field of upper superblock */ |
| 239 | lower_sb = lower_path.dentry->d_sb; |
| 240 | atomic_inc(&lower_sb->s_active); |
| 241 | sdcardfs_set_lower_super(sb, lower_sb); |
| 242 | |
| 243 | /* inherit maxbytes from lower file system */ |
| 244 | sb->s_maxbytes = lower_sb->s_maxbytes; |
| 245 | |
| 246 | /* |
| 247 | * Our c/m/atime granularity is 1 ns because we may stack on file |
| 248 | * systems whose granularity is as good. |
| 249 | */ |
| 250 | sb->s_time_gran = 1; |
| 251 | |
| 252 | sb->s_magic = SDCARDFS_SUPER_MAGIC; |
| 253 | sb->s_op = &sdcardfs_sops; |
| 254 | |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 255 | /* get a new inode and allocate our root dentry */ |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 256 | inode = sdcardfs_iget(sb, lower_path.dentry->d_inode, 0); |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 257 | if (IS_ERR(inode)) { |
| 258 | err = PTR_ERR(inode); |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 259 | goto out_sput; |
| 260 | } |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 261 | sb->s_root = d_make_root(inode); |
| 262 | if (!sb->s_root) { |
| 263 | err = -ENOMEM; |
| 264 | goto out_iput; |
| 265 | } |
| 266 | d_set_d_op(sb->s_root, &sdcardfs_ci_dops); |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 267 | |
| 268 | /* link the upper and lower dentries */ |
| 269 | sb->s_root->d_fsdata = NULL; |
| 270 | err = new_dentry_private_data(sb->s_root); |
| 271 | if (err) |
| 272 | goto out_freeroot; |
| 273 | |
| 274 | /* set the lower dentries for s_root */ |
| 275 | sdcardfs_set_lower_path(sb->s_root, &lower_path); |
| 276 | |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 277 | /* |
| 278 | * No need to call interpose because we already have a positive |
| 279 | * dentry, which was instantiated by d_make_root. Just need to |
| 280 | * d_rehash it. |
| 281 | */ |
| 282 | d_rehash(sb->s_root); |
| 283 | |
| 284 | /* setup permission policy */ |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 285 | sb_info->obbpath_s = kzalloc(PATH_MAX, GFP_KERNEL); |
| 286 | mutex_lock(&sdcardfs_super_list_lock); |
| 287 | if(sb_info->options.multiuser) { |
| 288 | setup_derived_state(sb->s_root->d_inode, PERM_PRE_ROOT, sb_info->options.fs_user_id, AID_ROOT, false); |
| 289 | snprintf(sb_info->obbpath_s, PATH_MAX, "%s/obb", dev_name); |
| 290 | /*err = prepare_dir(sb_info->obbpath_s, |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 291 | sb_info->options.fs_low_uid, |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 292 | sb_info->options.fs_low_gid, 00755);*/ |
| 293 | } else { |
| 294 | setup_derived_state(sb->s_root->d_inode, PERM_ROOT, sb_info->options.fs_low_uid, AID_ROOT, false); |
| 295 | snprintf(sb_info->obbpath_s, PATH_MAX, "%s/Android/obb", dev_name); |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 296 | } |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 297 | fix_derived_permission(sb->s_root->d_inode); |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 298 | sb_info->sb = sb; |
| 299 | list_add(&sb_info->list, &sdcardfs_super_list); |
| 300 | mutex_unlock(&sdcardfs_super_list_lock); |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 301 | |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 302 | if (!silent) |
| 303 | printk(KERN_INFO "sdcardfs: mounted on top of %s type %s\n", |
| 304 | dev_name, lower_sb->s_type->name); |
| 305 | goto out; /* all is well */ |
| 306 | |
| 307 | /* no longer needed: free_dentry_private_data(sb->s_root); */ |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 308 | out_freeroot: |
| 309 | dput(sb->s_root); |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 310 | out_iput: |
| 311 | iput(inode); |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 312 | out_sput: |
| 313 | /* drop refs we took earlier */ |
| 314 | atomic_dec(&lower_sb->s_active); |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 315 | out_freesbi: |
| 316 | kfree(SDCARDFS_SB(sb)); |
| 317 | sb->s_fs_info = NULL; |
| 318 | out_free: |
| 319 | path_put(&lower_path); |
| 320 | |
| 321 | out: |
| 322 | return err; |
| 323 | } |
| 324 | |
| 325 | /* A feature which supports mount_nodev() with options */ |
| 326 | static struct dentry *mount_nodev_with_options(struct file_system_type *fs_type, |
| 327 | int flags, const char *dev_name, void *data, |
| 328 | int (*fill_super)(struct super_block *, const char *, void *, int)) |
| 329 | |
| 330 | { |
| 331 | int error; |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 332 | struct super_block *s = sget(fs_type, NULL, set_anon_super, flags, NULL); |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 333 | |
| 334 | if (IS_ERR(s)) |
| 335 | return ERR_CAST(s); |
| 336 | |
| 337 | s->s_flags = flags; |
| 338 | |
| 339 | error = fill_super(s, dev_name, data, flags & MS_SILENT ? 1 : 0); |
| 340 | if (error) { |
| 341 | deactivate_locked_super(s); |
| 342 | return ERR_PTR(error); |
| 343 | } |
| 344 | s->s_flags |= MS_ACTIVE; |
| 345 | return dget(s->s_root); |
| 346 | } |
| 347 | |
| 348 | struct dentry *sdcardfs_mount(struct file_system_type *fs_type, int flags, |
| 349 | const char *dev_name, void *raw_data) |
| 350 | { |
| 351 | /* |
| 352 | * dev_name is a lower_path_name, |
| 353 | * raw_data is a option string. |
| 354 | */ |
| 355 | return mount_nodev_with_options(fs_type, flags, dev_name, |
| 356 | raw_data, sdcardfs_read_super); |
| 357 | } |
| 358 | |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 359 | void sdcardfs_kill_sb(struct super_block *sb) { |
| 360 | struct sdcardfs_sb_info *sbi; |
| 361 | if (sb->s_magic == SDCARDFS_SUPER_MAGIC) { |
| 362 | sbi = SDCARDFS_SB(sb); |
| 363 | mutex_lock(&sdcardfs_super_list_lock); |
| 364 | list_del(&sbi->list); |
| 365 | mutex_unlock(&sdcardfs_super_list_lock); |
| 366 | } |
| 367 | generic_shutdown_super(sb); |
| 368 | } |
| 369 | |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 370 | static struct file_system_type sdcardfs_fs_type = { |
| 371 | .owner = THIS_MODULE, |
| 372 | .name = SDCARDFS_NAME, |
| 373 | .mount = sdcardfs_mount, |
Daniel Rosenberg | 497ac90 | 2016-02-03 21:08:21 -0800 | [diff] [blame^] | 374 | .kill_sb = sdcardfs_kill_sb, |
Daniel Campello | d1d080c | 2015-07-20 16:27:37 -0700 | [diff] [blame] | 375 | .fs_flags = 0, |
Daniel Campello | 35c9e24 | 2015-07-20 16:23:50 -0700 | [diff] [blame] | 376 | }; |
| 377 | |
| 378 | static int __init init_sdcardfs_fs(void) |
| 379 | { |
| 380 | int err; |
| 381 | |
| 382 | pr_info("Registering sdcardfs " SDCARDFS_VERSION "\n"); |
| 383 | |
| 384 | err = sdcardfs_init_inode_cache(); |
| 385 | if (err) |
| 386 | goto out; |
| 387 | err = sdcardfs_init_dentry_cache(); |
| 388 | if (err) |
| 389 | goto out; |
| 390 | err = packagelist_init(); |
| 391 | if (err) |
| 392 | goto out; |
| 393 | err = register_filesystem(&sdcardfs_fs_type); |
| 394 | out: |
| 395 | if (err) { |
| 396 | sdcardfs_destroy_inode_cache(); |
| 397 | sdcardfs_destroy_dentry_cache(); |
| 398 | packagelist_exit(); |
| 399 | } |
| 400 | return err; |
| 401 | } |
| 402 | |
| 403 | static void __exit exit_sdcardfs_fs(void) |
| 404 | { |
| 405 | sdcardfs_destroy_inode_cache(); |
| 406 | sdcardfs_destroy_dentry_cache(); |
| 407 | packagelist_exit(); |
| 408 | unregister_filesystem(&sdcardfs_fs_type); |
| 409 | pr_info("Completed sdcardfs module unload\n"); |
| 410 | } |
| 411 | |
| 412 | MODULE_AUTHOR("Erez Zadok, Filesystems and Storage Lab, Stony Brook University" |
| 413 | " (http://www.fsl.cs.sunysb.edu/)"); |
| 414 | MODULE_DESCRIPTION("Wrapfs " SDCARDFS_VERSION |
| 415 | " (http://wrapfs.filesystems.org/)"); |
| 416 | MODULE_LICENSE("GPL"); |
| 417 | |
| 418 | module_init(init_sdcardfs_fs); |
| 419 | module_exit(exit_sdcardfs_fs); |