Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1 | /* |
Miklos Szeredi | e56818b | 2004-12-12 11:45:24 +0000 | [diff] [blame] | 2 | FUSE: Filesystem in Userspace |
Miklos Szeredi | 149f607 | 2005-01-10 12:29:28 +0000 | [diff] [blame] | 3 | Copyright (C) 2001-2005 Miklos Szeredi <miklos@szeredi.hu> |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 4 | |
Miklos Szeredi | e56818b | 2004-12-12 11:45:24 +0000 | [diff] [blame] | 5 | This program can be distributed under the terms of the GNU GPL. |
| 6 | See the file COPYING. |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | #include "fuse_i.h" |
| 10 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 11 | #include <linux/pagemap.h> |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 12 | #include <linux/file.h> |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 13 | #ifdef KERNEL_2_6 |
| 14 | #include <linux/gfp.h> |
| 15 | #else |
| 16 | #include <linux/mm.h> |
| 17 | #endif |
| 18 | #include <linux/sched.h> |
Miklos Szeredi | 3b9e53f | 2005-09-02 16:04:48 +0000 | [diff] [blame] | 19 | #ifdef KERNEL_2_6 |
Miklos Szeredi | 8139452 | 2005-01-11 14:24:18 +0000 | [diff] [blame] | 20 | #include <linux/namei.h> |
| 21 | #endif |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 22 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 23 | /* |
| 24 | * FUSE caches dentries and attributes with separate timeout. The |
| 25 | * time in jiffies until the dentry/attributes are valid is stored in |
| 26 | * dentry->d_time and fuse_inode->i_time respectively. |
| 27 | */ |
| 28 | |
| 29 | /* |
| 30 | * Calcualte the time in jiffies until a dentry/attributes are valid |
| 31 | */ |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 32 | static inline unsigned long time_to_jiffies(unsigned long sec, |
| 33 | unsigned long nsec) |
| 34 | { |
Miklos Szeredi | 8139452 | 2005-01-11 14:24:18 +0000 | [diff] [blame] | 35 | struct timespec ts = {sec, nsec}; |
Miklos Szeredi | fcf9f8d | 2005-09-08 14:28:54 +0000 | [diff] [blame] | 36 | return jiffies + timespec_to_jiffies(&ts); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 37 | } |
| 38 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 39 | /* |
| 40 | * Set dentry and possibly attribute timeouts from the lookup/mk* |
| 41 | * replies |
| 42 | */ |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 43 | static void fuse_change_timeout(struct dentry *entry, struct fuse_entry_out *o) |
| 44 | { |
| 45 | entry->d_time = time_to_jiffies(o->entry_valid, o->entry_valid_nsec); |
| 46 | if (entry->d_inode) |
| 47 | get_fuse_inode(entry->d_inode)->i_time = |
| 48 | time_to_jiffies(o->attr_valid, o->attr_valid_nsec); |
| 49 | } |
| 50 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 51 | /* |
| 52 | * Mark the attributes as stale, so that at the next call to |
| 53 | * ->getattr() they will be fetched from userspace |
| 54 | */ |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 55 | void fuse_invalidate_attr(struct inode *inode) |
| 56 | { |
| 57 | get_fuse_inode(inode)->i_time = jiffies - 1; |
| 58 | } |
| 59 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 60 | /* |
| 61 | * Just mark the entry as stale, so that a next attempt to look it up |
| 62 | * will result in a new lookup call to userspace |
| 63 | * |
| 64 | * This is called when a dentry is about to become negative and the |
| 65 | * timeout is unknown (unlink, rmdir, rename and in some cases |
| 66 | * lookup) |
| 67 | */ |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 68 | static void fuse_invalidate_entry_cache(struct dentry *entry) |
| 69 | { |
| 70 | entry->d_time = jiffies - 1; |
| 71 | } |
| 72 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 73 | /* |
| 74 | * Same as fuse_invalidate_entry_cache(), but also try to remove the |
| 75 | * dentry from the hash |
| 76 | */ |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 77 | static void fuse_invalidate_entry(struct dentry *entry) |
| 78 | { |
| 79 | d_invalidate(entry); |
| 80 | fuse_invalidate_entry_cache(entry); |
| 81 | } |
| 82 | |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 83 | static void fuse_lookup_init(struct fuse_req *req, struct inode *dir, |
| 84 | struct dentry *entry, |
| 85 | struct fuse_entry_out *outarg) |
| 86 | { |
| 87 | req->in.h.opcode = FUSE_LOOKUP; |
| 88 | req->in.h.nodeid = get_node_id(dir); |
| 89 | req->inode = dir; |
| 90 | req->in.numargs = 1; |
| 91 | req->in.args[0].size = entry->d_name.len + 1; |
| 92 | req->in.args[0].value = entry->d_name.name; |
| 93 | req->out.numargs = 1; |
| 94 | req->out.args[0].size = sizeof(struct fuse_entry_out); |
| 95 | req->out.args[0].value = outarg; |
| 96 | } |
| 97 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 98 | /* |
| 99 | * Check whether the dentry is still valid |
| 100 | * |
| 101 | * If the entry validity timeout has expired and the dentry is |
| 102 | * positive, try to redo the lookup. If the lookup results in a |
| 103 | * different inode, then let the VFS invalidate the dentry and redo |
| 104 | * the lookup once more. If the lookup results in the same inode, |
| 105 | * then refresh the attributes, timeouts and mark the dentry valid. |
| 106 | */ |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 107 | static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd) |
| 108 | { |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 109 | struct inode *inode = entry->d_inode; |
| 110 | |
| 111 | if (inode && is_bad_inode(inode)) |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 112 | return 0; |
Miklos Szeredi | 8139452 | 2005-01-11 14:24:18 +0000 | [diff] [blame] | 113 | else if (time_after(jiffies, entry->d_time)) { |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 114 | int err; |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 115 | struct fuse_entry_out outarg; |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 116 | struct fuse_conn *fc; |
| 117 | struct fuse_req *req; |
| 118 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 119 | /* Doesn't hurt to "reset" the validity timeout */ |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 120 | fuse_invalidate_entry_cache(entry); |
| 121 | if (!inode) |
| 122 | return 0; |
| 123 | |
| 124 | fc = get_fuse_conn(inode); |
| 125 | req = fuse_get_request(fc); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 126 | if (!req) |
| 127 | return 0; |
| 128 | |
| 129 | fuse_lookup_init(req, entry->d_parent->d_inode, entry, &outarg); |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 130 | request_send(fc, req); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 131 | err = req->out.h.error; |
Miklos Szeredi | 3800902 | 2005-05-08 19:47:22 +0000 | [diff] [blame] | 132 | if (!err) { |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 133 | struct fuse_inode *fi = get_fuse_inode(inode); |
Miklos Szeredi | 3800902 | 2005-05-08 19:47:22 +0000 | [diff] [blame] | 134 | if (outarg.nodeid != get_node_id(inode)) { |
| 135 | fuse_send_forget(fc, req, outarg.nodeid, 1); |
| 136 | return 0; |
| 137 | } |
| 138 | fi->nlookup ++; |
| 139 | } |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 140 | fuse_put_request(fc, req); |
Miklos Szeredi | 3800902 | 2005-05-08 19:47:22 +0000 | [diff] [blame] | 141 | if (err || (outarg.attr.mode ^ inode->i_mode) & S_IFMT) |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 142 | return 0; |
| 143 | |
| 144 | fuse_change_attributes(inode, &outarg.attr); |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 145 | fuse_change_timeout(entry, &outarg); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 146 | } |
| 147 | return 1; |
| 148 | } |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 149 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 150 | /* |
| 151 | * Check if there's already a hashed alias of this directory inode. |
| 152 | * If yes, then lookup and mkdir must not create a new alias. |
| 153 | */ |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 154 | static int dir_alias(struct inode *inode) |
| 155 | { |
| 156 | if (S_ISDIR(inode->i_mode)) { |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 157 | struct dentry *alias = d_find_alias(inode); |
| 158 | #if defined(FUSE_MAINLINE) || !defined(KERNEL_2_6) |
| 159 | if (alias) { |
| 160 | dput(alias); |
| 161 | return 1; |
| 162 | } |
| 163 | #else |
| 164 | if (alias && !(alias->d_flags & DCACHE_DISCONNECTED)) { |
| 165 | dput(alias); |
| 166 | return 1; |
| 167 | } |
| 168 | dput(alias); |
| 169 | #endif |
| 170 | } |
| 171 | return 0; |
| 172 | } |
| 173 | |
| 174 | static inline int invalid_nodeid(u64 nodeid) |
| 175 | { |
| 176 | return !nodeid || nodeid == FUSE_ROOT_ID; |
| 177 | } |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 178 | #ifndef KERNEL_2_6 |
| 179 | static int fuse_dentry_revalidate_2_4(struct dentry *entry, int flags) |
| 180 | { |
| 181 | return fuse_dentry_revalidate(entry, NULL); |
| 182 | } |
| 183 | #endif |
| 184 | |
| 185 | static struct dentry_operations fuse_dentry_operations = { |
| 186 | #ifdef KERNEL_2_6 |
| 187 | .d_revalidate = fuse_dentry_revalidate, |
| 188 | #else |
| 189 | .d_revalidate = fuse_dentry_revalidate_2_4, |
| 190 | #endif |
| 191 | }; |
| 192 | |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 193 | static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry, |
| 194 | struct nameidata *nd) |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 195 | { |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 196 | int err; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 197 | struct fuse_entry_out outarg; |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 198 | struct inode *inode = NULL; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 199 | struct fuse_conn *fc = get_fuse_conn(dir); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 200 | struct fuse_req *req; |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 201 | #if !defined(FUSE_MAINLINE) && defined(KERNEL_2_6) |
| 202 | struct dentry *newent; |
| 203 | #endif |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 204 | |
Miklos Szeredi | 044da2e | 2005-12-06 17:59:55 +0000 | [diff] [blame] | 205 | if (entry->d_name.len > fc->name_max) |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 206 | return ERR_PTR(-ENAMETOOLONG); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 207 | |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 208 | req = fuse_get_request(fc); |
| 209 | if (!req) |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 210 | return ERR_PTR(-EINTR); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 211 | |
Miklos Szeredi | e56818b | 2004-12-12 11:45:24 +0000 | [diff] [blame] | 212 | fuse_lookup_init(req, dir, entry, &outarg); |
| 213 | request_send(fc, req); |
Miklos Szeredi | e56818b | 2004-12-12 11:45:24 +0000 | [diff] [blame] | 214 | err = req->out.h.error; |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 215 | if (!err && outarg.nodeid && invalid_nodeid(outarg.nodeid)) |
Miklos Szeredi | 6becf0b | 2005-09-23 11:25:28 +0000 | [diff] [blame] | 216 | err = -EIO; |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 217 | if (!err && outarg.nodeid) { |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame] | 218 | inode = fuse_iget(dir->i_sb, outarg.nodeid, outarg.generation, |
Miklos Szeredi | 3800902 | 2005-05-08 19:47:22 +0000 | [diff] [blame] | 219 | &outarg.attr); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 220 | if (!inode) { |
Miklos Szeredi | 3800902 | 2005-05-08 19:47:22 +0000 | [diff] [blame] | 221 | fuse_send_forget(fc, req, outarg.nodeid, 1); |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 222 | return ERR_PTR(-ENOMEM); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 223 | } |
Miklos Szeredi | aa63b6b | 2004-12-03 13:24:35 +0000 | [diff] [blame] | 224 | } |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 225 | fuse_put_request(fc, req); |
| 226 | if (err && err != -ENOENT) |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 227 | return ERR_PTR(err); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 228 | |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 229 | if (inode && dir_alias(inode)) { |
| 230 | iput(inode); |
| 231 | return ERR_PTR(-EIO); |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 232 | } |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 233 | #if defined(FUSE_MAINLINE) || !defined(KERNEL_2_6) |
| 234 | d_add(entry, inode); |
| 235 | #else |
| 236 | newent = d_splice_alias(inode, entry); |
| 237 | entry = newent ? newent : entry; |
| 238 | #endif |
Miklos Szeredi | 307242f | 2004-01-26 11:28:44 +0000 | [diff] [blame] | 239 | entry->d_op = &fuse_dentry_operations; |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 240 | if (!err) |
| 241 | fuse_change_timeout(entry, &outarg); |
| 242 | else |
| 243 | fuse_invalidate_entry_cache(entry); |
| 244 | #if defined(FUSE_MAINLINE) || !defined(KERNEL_2_6) |
| 245 | return NULL; |
| 246 | #else |
| 247 | return newent; |
| 248 | #endif |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 249 | } |
| 250 | |
Miklos Szeredi | d9079a7 | 2005-10-26 15:29:06 +0000 | [diff] [blame] | 251 | #ifdef HAVE_LOOKUP_INSTANTIATE_FILP |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 252 | /* |
| 253 | * Atomic create+open operation |
| 254 | * |
| 255 | * If the filesystem doesn't support this, then fall back to separate |
| 256 | * 'mknod' + 'open' requests. |
| 257 | */ |
Miklos Szeredi | d9079a7 | 2005-10-26 15:29:06 +0000 | [diff] [blame] | 258 | static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode, |
| 259 | struct nameidata *nd) |
| 260 | { |
| 261 | int err; |
| 262 | struct inode *inode; |
| 263 | struct fuse_conn *fc = get_fuse_conn(dir); |
| 264 | struct fuse_req *req; |
| 265 | struct fuse_open_in inarg; |
| 266 | struct fuse_open_out outopen; |
| 267 | struct fuse_entry_out outentry; |
Miklos Szeredi | d9079a7 | 2005-10-26 15:29:06 +0000 | [diff] [blame] | 268 | struct fuse_file *ff; |
| 269 | struct file *file; |
| 270 | int flags = nd->intent.open.flags - 1; |
| 271 | |
| 272 | err = -ENOSYS; |
| 273 | if (fc->no_create) |
| 274 | goto out; |
| 275 | |
| 276 | err = -ENAMETOOLONG; |
Miklos Szeredi | 044da2e | 2005-12-06 17:59:55 +0000 | [diff] [blame] | 277 | if (entry->d_name.len > fc->name_max) |
Miklos Szeredi | d9079a7 | 2005-10-26 15:29:06 +0000 | [diff] [blame] | 278 | goto out; |
| 279 | |
| 280 | err = -EINTR; |
| 281 | req = fuse_get_request(fc); |
| 282 | if (!req) |
| 283 | goto out; |
| 284 | |
| 285 | ff = fuse_file_alloc(); |
| 286 | if (!ff) |
| 287 | goto out_put_request; |
| 288 | |
| 289 | flags &= ~O_NOCTTY; |
| 290 | memset(&inarg, 0, sizeof(inarg)); |
| 291 | inarg.flags = flags; |
| 292 | inarg.mode = mode; |
| 293 | req->in.h.opcode = FUSE_CREATE; |
| 294 | req->in.h.nodeid = get_node_id(dir); |
| 295 | req->inode = dir; |
| 296 | req->in.numargs = 2; |
| 297 | req->in.args[0].size = sizeof(inarg); |
| 298 | req->in.args[0].value = &inarg; |
| 299 | req->in.args[1].size = entry->d_name.len + 1; |
| 300 | req->in.args[1].value = entry->d_name.name; |
| 301 | req->out.numargs = 2; |
| 302 | req->out.args[0].size = sizeof(outentry); |
| 303 | req->out.args[0].value = &outentry; |
| 304 | req->out.args[1].size = sizeof(outopen); |
| 305 | req->out.args[1].value = &outopen; |
| 306 | request_send(fc, req); |
| 307 | err = req->out.h.error; |
| 308 | if (err) { |
| 309 | if (err == -ENOSYS) |
| 310 | fc->no_create = 1; |
| 311 | goto out_free_ff; |
| 312 | } |
| 313 | |
| 314 | err = -EIO; |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 315 | if (!S_ISREG(outentry.attr.mode) || invalid_nodeid(outentry.nodeid)) |
Miklos Szeredi | d9079a7 | 2005-10-26 15:29:06 +0000 | [diff] [blame] | 316 | goto out_free_ff; |
| 317 | |
| 318 | inode = fuse_iget(dir->i_sb, outentry.nodeid, outentry.generation, |
| 319 | &outentry.attr); |
| 320 | err = -ENOMEM; |
| 321 | if (!inode) { |
| 322 | flags &= ~(O_CREAT | O_EXCL | O_TRUNC); |
Miklos Szeredi | 1a90612 | 2005-11-28 16:31:40 +0000 | [diff] [blame] | 323 | ff->fh = outopen.fh; |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 324 | /* Special release, with inode = NULL, this will |
| 325 | trigger a 'forget' request when the release is |
| 326 | complete */ |
Miklos Szeredi | d9079a7 | 2005-10-26 15:29:06 +0000 | [diff] [blame] | 327 | fuse_send_release(fc, ff, outentry.nodeid, NULL, flags, 0); |
| 328 | goto out_put_request; |
| 329 | } |
| 330 | fuse_put_request(fc, req); |
Miklos Szeredi | d9079a7 | 2005-10-26 15:29:06 +0000 | [diff] [blame] | 331 | d_instantiate(entry, inode); |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 332 | fuse_change_timeout(entry, &outentry); |
Miklos Szeredi | d9079a7 | 2005-10-26 15:29:06 +0000 | [diff] [blame] | 333 | file = lookup_instantiate_filp(nd, entry, generic_file_open); |
| 334 | if (IS_ERR(file)) { |
Miklos Szeredi | 1a90612 | 2005-11-28 16:31:40 +0000 | [diff] [blame] | 335 | ff->fh = outopen.fh; |
Miklos Szeredi | d9079a7 | 2005-10-26 15:29:06 +0000 | [diff] [blame] | 336 | fuse_send_release(fc, ff, outentry.nodeid, inode, flags, 0); |
| 337 | return PTR_ERR(file); |
| 338 | } |
| 339 | fuse_finish_open(inode, file, ff, &outopen); |
| 340 | return 0; |
| 341 | |
| 342 | out_free_ff: |
| 343 | fuse_file_free(ff); |
| 344 | out_put_request: |
| 345 | fuse_put_request(fc, req); |
| 346 | out: |
| 347 | return err; |
| 348 | } |
| 349 | #endif |
| 350 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 351 | /* |
| 352 | * Code shared between mknod, mkdir, symlink and link |
| 353 | */ |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 354 | static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req, |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 355 | struct inode *dir, struct dentry *entry, |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 356 | int mode) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 357 | { |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 358 | struct fuse_entry_out outarg; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 359 | struct inode *inode; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 360 | int err; |
| 361 | |
| 362 | req->in.h.nodeid = get_node_id(dir); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 363 | req->inode = dir; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 364 | req->out.numargs = 1; |
| 365 | req->out.args[0].size = sizeof(outarg); |
| 366 | req->out.args[0].value = &outarg; |
| 367 | request_send(fc, req); |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 368 | err = req->out.h.error; |
| 369 | if (err) { |
| 370 | fuse_put_request(fc, req); |
| 371 | return err; |
| 372 | } |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 373 | if (invalid_nodeid(outarg.nodeid)) { |
Miklos Szeredi | 6becf0b | 2005-09-23 11:25:28 +0000 | [diff] [blame] | 374 | fuse_put_request(fc, req); |
| 375 | return -EIO; |
| 376 | } |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 377 | inode = fuse_iget(dir->i_sb, outarg.nodeid, outarg.generation, |
Miklos Szeredi | 3800902 | 2005-05-08 19:47:22 +0000 | [diff] [blame] | 378 | &outarg.attr); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 379 | if (!inode) { |
Miklos Szeredi | 3800902 | 2005-05-08 19:47:22 +0000 | [diff] [blame] | 380 | fuse_send_forget(fc, req, outarg.nodeid, 1); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 381 | return -ENOMEM; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 382 | } |
| 383 | fuse_put_request(fc, req); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 384 | |
| 385 | /* Don't allow userspace to do really stupid things... */ |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 386 | if (((inode->i_mode ^ mode) & S_IFMT) || dir_alias(inode)) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 387 | iput(inode); |
Miklos Szeredi | e56818b | 2004-12-12 11:45:24 +0000 | [diff] [blame] | 388 | return -EIO; |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 389 | } |
| 390 | |
| 391 | d_instantiate(entry, inode); |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 392 | fuse_change_timeout(entry, &outarg); |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 393 | fuse_invalidate_attr(dir); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 394 | return 0; |
| 395 | } |
| 396 | |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 397 | static int fuse_mknod(struct inode *dir, struct dentry *entry, int mode, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 398 | dev_t rdev) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 399 | { |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 400 | struct fuse_mknod_in inarg; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 401 | struct fuse_conn *fc = get_fuse_conn(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 402 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 403 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 404 | return -EINTR; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 405 | |
| 406 | memset(&inarg, 0, sizeof(inarg)); |
| 407 | inarg.mode = mode; |
Miklos Szeredi | 7c35cf9 | 2004-01-14 16:56:49 +0000 | [diff] [blame] | 408 | inarg.rdev = new_encode_dev(rdev); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 409 | req->in.h.opcode = FUSE_MKNOD; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 410 | req->in.numargs = 2; |
| 411 | req->in.args[0].size = sizeof(inarg); |
| 412 | req->in.args[0].value = &inarg; |
| 413 | req->in.args[1].size = entry->d_name.len + 1; |
| 414 | req->in.args[1].value = entry->d_name.name; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 415 | return create_new_entry(fc, req, dir, entry, mode); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 416 | } |
| 417 | |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 418 | static int fuse_create(struct inode *dir, struct dentry *entry, int mode, |
| 419 | struct nameidata *nd) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 420 | { |
Miklos Szeredi | d9079a7 | 2005-10-26 15:29:06 +0000 | [diff] [blame] | 421 | #ifdef HAVE_LOOKUP_INSTANTIATE_FILP |
| 422 | if (nd && (nd->flags & LOOKUP_CREATE)) { |
| 423 | int err = fuse_create_open(dir, entry, mode, nd); |
| 424 | if (err != -ENOSYS) |
| 425 | return err; |
| 426 | /* Fall back on mknod */ |
| 427 | } |
| 428 | #endif |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 429 | return fuse_mknod(dir, entry, mode, 0); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 430 | } |
| 431 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 432 | static int fuse_mkdir(struct inode *dir, struct dentry *entry, int mode) |
| 433 | { |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 434 | struct fuse_mkdir_in inarg; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 435 | struct fuse_conn *fc = get_fuse_conn(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 436 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 437 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 438 | return -EINTR; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 439 | |
| 440 | memset(&inarg, 0, sizeof(inarg)); |
| 441 | inarg.mode = mode; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 442 | req->in.h.opcode = FUSE_MKDIR; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 443 | req->in.numargs = 2; |
| 444 | req->in.args[0].size = sizeof(inarg); |
| 445 | req->in.args[0].value = &inarg; |
| 446 | req->in.args[1].size = entry->d_name.len + 1; |
| 447 | req->in.args[1].value = entry->d_name.name; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 448 | return create_new_entry(fc, req, dir, entry, S_IFDIR); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 449 | } |
| 450 | |
| 451 | static int fuse_symlink(struct inode *dir, struct dentry *entry, |
| 452 | const char *link) |
| 453 | { |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 454 | struct fuse_conn *fc = get_fuse_conn(dir); |
Miklos Szeredi | 83a0744 | 2004-11-30 18:25:20 +0000 | [diff] [blame] | 455 | unsigned len = strlen(link) + 1; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 456 | struct fuse_req *req; |
Miklos Szeredi | aa63b6b | 2004-12-03 13:24:35 +0000 | [diff] [blame] | 457 | |
Miklos Szeredi | 044da2e | 2005-12-06 17:59:55 +0000 | [diff] [blame] | 458 | if (len > fc->symlink_max) |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 459 | return -ENAMETOOLONG; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 460 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 461 | req = fuse_get_request(fc); |
| 462 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 463 | return -EINTR; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 464 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 465 | req->in.h.opcode = FUSE_SYMLINK; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 466 | req->in.numargs = 2; |
| 467 | req->in.args[0].size = entry->d_name.len + 1; |
| 468 | req->in.args[0].value = entry->d_name.name; |
| 469 | req->in.args[1].size = len; |
| 470 | req->in.args[1].value = link; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 471 | return create_new_entry(fc, req, dir, entry, S_IFLNK); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 472 | } |
| 473 | |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 474 | static int fuse_unlink(struct inode *dir, struct dentry *entry) |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 475 | { |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 476 | int err; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 477 | struct fuse_conn *fc = get_fuse_conn(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 478 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 479 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 480 | return -EINTR; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 481 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 482 | req->in.h.opcode = FUSE_UNLINK; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 483 | req->in.h.nodeid = get_node_id(dir); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 484 | req->inode = dir; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 485 | req->in.numargs = 1; |
| 486 | req->in.args[0].size = entry->d_name.len + 1; |
| 487 | req->in.args[0].value = entry->d_name.name; |
| 488 | request_send(fc, req); |
| 489 | err = req->out.h.error; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 490 | fuse_put_request(fc, req); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 491 | if (!err) { |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 492 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | aa63b6b | 2004-12-03 13:24:35 +0000 | [diff] [blame] | 493 | |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 494 | /* Set nlink to zero so the inode can be cleared, if |
| 495 | the inode does have more links this will be |
| 496 | discovered at the next lookup/getattr */ |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 497 | inode->i_nlink = 0; |
| 498 | fuse_invalidate_attr(inode); |
| 499 | fuse_invalidate_attr(dir); |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 500 | fuse_invalidate_entry_cache(entry); |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 501 | } else if (err == -EINTR) |
| 502 | fuse_invalidate_entry(entry); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 503 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 504 | } |
| 505 | |
| 506 | static int fuse_rmdir(struct inode *dir, struct dentry *entry) |
| 507 | { |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 508 | int err; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 509 | struct fuse_conn *fc = get_fuse_conn(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 510 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 511 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 512 | return -EINTR; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 513 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 514 | req->in.h.opcode = FUSE_RMDIR; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 515 | req->in.h.nodeid = get_node_id(dir); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 516 | req->inode = dir; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 517 | req->in.numargs = 1; |
| 518 | req->in.args[0].size = entry->d_name.len + 1; |
| 519 | req->in.args[0].value = entry->d_name.name; |
| 520 | request_send(fc, req); |
| 521 | err = req->out.h.error; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 522 | fuse_put_request(fc, req); |
Miklos Szeredi | 015fe70 | 2004-07-12 11:52:24 +0000 | [diff] [blame] | 523 | if (!err) { |
Miklos Szeredi | f4f8b89 | 2004-01-27 17:04:59 +0000 | [diff] [blame] | 524 | entry->d_inode->i_nlink = 0; |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 525 | fuse_invalidate_attr(dir); |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 526 | fuse_invalidate_entry_cache(entry); |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 527 | } else if (err == -EINTR) |
| 528 | fuse_invalidate_entry(entry); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 529 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 530 | } |
| 531 | |
| 532 | static int fuse_rename(struct inode *olddir, struct dentry *oldent, |
| 533 | struct inode *newdir, struct dentry *newent) |
| 534 | { |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 535 | int err; |
| 536 | struct fuse_rename_in inarg; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 537 | struct fuse_conn *fc = get_fuse_conn(olddir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 538 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 539 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 540 | return -EINTR; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 541 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 542 | memset(&inarg, 0, sizeof(inarg)); |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 543 | inarg.newdir = get_node_id(newdir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 544 | req->in.h.opcode = FUSE_RENAME; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 545 | req->in.h.nodeid = get_node_id(olddir); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 546 | req->inode = olddir; |
| 547 | req->inode2 = newdir; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 548 | req->in.numargs = 3; |
| 549 | req->in.args[0].size = sizeof(inarg); |
| 550 | req->in.args[0].value = &inarg; |
| 551 | req->in.args[1].size = oldent->d_name.len + 1; |
| 552 | req->in.args[1].value = oldent->d_name.name; |
| 553 | req->in.args[2].size = newent->d_name.len + 1; |
| 554 | req->in.args[2].value = newent->d_name.name; |
| 555 | request_send(fc, req); |
| 556 | err = req->out.h.error; |
| 557 | fuse_put_request(fc, req); |
Miklos Szeredi | 015fe70 | 2004-07-12 11:52:24 +0000 | [diff] [blame] | 558 | if (!err) { |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 559 | fuse_invalidate_attr(olddir); |
Miklos Szeredi | 015fe70 | 2004-07-12 11:52:24 +0000 | [diff] [blame] | 560 | if (olddir != newdir) |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 561 | fuse_invalidate_attr(newdir); |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 562 | |
| 563 | /* newent will end up negative */ |
Miklos Szeredi | 044da2e | 2005-12-06 17:59:55 +0000 | [diff] [blame] | 564 | if (newent->d_inode) |
| 565 | fuse_invalidate_entry_cache(newent); |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 566 | } else if (err == -EINTR) { |
| 567 | /* If request was interrupted, DEITY only knows if the |
| 568 | rename actually took place. If the invalidation |
| 569 | fails (e.g. some process has CWD under the renamed |
| 570 | directory), then there can be inconsistency between |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 571 | the dcache and the real filesystem. Tough luck. */ |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 572 | fuse_invalidate_entry(oldent); |
| 573 | if (newent->d_inode) |
| 574 | fuse_invalidate_entry(newent); |
Miklos Szeredi | 015fe70 | 2004-07-12 11:52:24 +0000 | [diff] [blame] | 575 | } |
Miklos Szeredi | cdae16e | 2005-01-14 11:43:22 +0000 | [diff] [blame] | 576 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 577 | return err; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | static int fuse_link(struct dentry *entry, struct inode *newdir, |
| 581 | struct dentry *newent) |
| 582 | { |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 583 | int err; |
| 584 | struct fuse_link_in inarg; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 585 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 586 | struct fuse_conn *fc = get_fuse_conn(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 587 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 588 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 589 | return -EINTR; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 590 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 591 | memset(&inarg, 0, sizeof(inarg)); |
Miklos Szeredi | ed6b5dd | 2005-01-26 17:07:59 +0000 | [diff] [blame] | 592 | inarg.oldnodeid = get_node_id(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 593 | req->in.h.opcode = FUSE_LINK; |
Miklos Szeredi | ed6b5dd | 2005-01-26 17:07:59 +0000 | [diff] [blame] | 594 | req->inode2 = inode; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 595 | req->in.numargs = 2; |
| 596 | req->in.args[0].size = sizeof(inarg); |
| 597 | req->in.args[0].value = &inarg; |
| 598 | req->in.args[1].size = newent->d_name.len + 1; |
| 599 | req->in.args[1].value = newent->d_name.name; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 600 | err = create_new_entry(fc, req, newdir, newent, inode->i_mode); |
| 601 | /* Contrary to "normal" filesystems it can happen that link |
| 602 | makes two "logical" inodes point to the same "physical" |
| 603 | inode. We invalidate the attributes of the old one, so it |
| 604 | will reflect changes in the backing inode (link count, |
| 605 | etc.) |
| 606 | */ |
| 607 | if (!err || err == -EINTR) |
| 608 | fuse_invalidate_attr(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 609 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 610 | } |
| 611 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 612 | int fuse_do_getattr(struct inode *inode) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 613 | { |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 614 | int err; |
| 615 | struct fuse_attr_out arg; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 616 | struct fuse_conn *fc = get_fuse_conn(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 617 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 618 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 619 | return -EINTR; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 620 | |
| 621 | req->in.h.opcode = FUSE_GETATTR; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 622 | req->in.h.nodeid = get_node_id(inode); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 623 | req->inode = inode; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 624 | req->out.numargs = 1; |
| 625 | req->out.args[0].size = sizeof(arg); |
| 626 | req->out.args[0].value = &arg; |
| 627 | request_send(fc, req); |
Miklos Szeredi | aa63b6b | 2004-12-03 13:24:35 +0000 | [diff] [blame] | 628 | err = req->out.h.error; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 629 | fuse_put_request(fc, req); |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 630 | if (!err) { |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 631 | if ((inode->i_mode ^ arg.attr.mode) & S_IFMT) { |
Miklos Szeredi | 9f60c49 | 2005-09-08 14:34:48 +0000 | [diff] [blame] | 632 | #ifndef KERNEL_2_6_12_PLUS |
Miklos Szeredi | dbe0f65 | 2005-01-15 14:32:56 +0000 | [diff] [blame] | 633 | if (get_node_id(inode) != FUSE_ROOT_ID) |
| 634 | make_bad_inode(inode); |
Miklos Szeredi | e22acbe | 2005-01-20 08:37:30 +0000 | [diff] [blame] | 635 | #else |
| 636 | make_bad_inode(inode); |
| 637 | #endif |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 638 | err = -EIO; |
| 639 | } else { |
| 640 | struct fuse_inode *fi = get_fuse_inode(inode); |
| 641 | fuse_change_attributes(inode, &arg.attr); |
| 642 | fi->i_time = time_to_jiffies(arg.attr_valid, |
| 643 | arg.attr_valid_nsec); |
| 644 | } |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 645 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 646 | return err; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 647 | } |
| 648 | |
Miklos Szeredi | 61139db | 2005-04-29 07:38:25 +0000 | [diff] [blame] | 649 | /* |
| 650 | * Calling into a user-controlled filesystem gives the filesystem |
| 651 | * daemon ptrace-like capabilities over the requester process. This |
| 652 | * means, that the filesystem daemon is able to record the exact |
| 653 | * filesystem operations performed, and can also control the behavior |
| 654 | * of the requester process in otherwise impossible ways. For example |
| 655 | * it can delay the operation for arbitrary length of time allowing |
| 656 | * DoS against the requester. |
| 657 | * |
| 658 | * For this reason only those processes can call into the filesystem, |
| 659 | * for which the owner of the mount has ptrace privilege. This |
| 660 | * excludes processes started by other users, suid or sgid processes. |
| 661 | */ |
Miklos Szeredi | 9c1b68d | 2005-04-28 09:55:09 +0000 | [diff] [blame] | 662 | static int fuse_allow_task(struct fuse_conn *fc, struct task_struct *task) |
| 663 | { |
| 664 | if (fc->flags & FUSE_ALLOW_OTHER) |
| 665 | return 1; |
| 666 | |
Miklos Szeredi | 9c1b68d | 2005-04-28 09:55:09 +0000 | [diff] [blame] | 667 | if (task->euid == fc->user_id && |
| 668 | task->suid == fc->user_id && |
| 669 | task->uid == fc->user_id && |
| 670 | task->egid == fc->group_id && |
| 671 | task->sgid == fc->group_id && |
| 672 | task->gid == fc->group_id) |
| 673 | return 1; |
| 674 | |
| 675 | return 0; |
| 676 | } |
| 677 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 678 | /* |
| 679 | * Check whether the inode attributes are still valid |
| 680 | * |
| 681 | * If the attribute validity timeout has expired, then fetch the fresh |
| 682 | * attributes with a 'getattr' request |
| 683 | * |
| 684 | * I'm not sure why cached attributes are never returned for the root |
| 685 | * inode, this is probably being too cautious. |
| 686 | */ |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 687 | static int fuse_revalidate(struct dentry *entry) |
| 688 | { |
| 689 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 690 | struct fuse_inode *fi = get_fuse_inode(inode); |
| 691 | struct fuse_conn *fc = get_fuse_conn(inode); |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 692 | |
Miklos Szeredi | 9c1b68d | 2005-04-28 09:55:09 +0000 | [diff] [blame] | 693 | if (!fuse_allow_task(fc, current)) |
| 694 | return -EACCES; |
| 695 | if (get_node_id(inode) != FUSE_ROOT_ID && |
| 696 | time_before_eq(jiffies, fi->i_time)) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 697 | return 0; |
| 698 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 699 | return fuse_do_getattr(inode); |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 700 | } |
| 701 | |
Miklos Szeredi | b0b13d1 | 2005-10-26 12:53:25 +0000 | [diff] [blame] | 702 | #ifdef KERNEL_2_6 |
| 703 | static int fuse_access(struct inode *inode, int mask) |
| 704 | { |
| 705 | struct fuse_conn *fc = get_fuse_conn(inode); |
| 706 | struct fuse_req *req; |
| 707 | struct fuse_access_in inarg; |
| 708 | int err; |
| 709 | |
| 710 | if (fc->no_access) |
| 711 | return 0; |
| 712 | |
| 713 | req = fuse_get_request(fc); |
| 714 | if (!req) |
| 715 | return -EINTR; |
| 716 | |
| 717 | memset(&inarg, 0, sizeof(inarg)); |
| 718 | inarg.mask = mask; |
| 719 | req->in.h.opcode = FUSE_ACCESS; |
| 720 | req->in.h.nodeid = get_node_id(inode); |
| 721 | req->inode = inode; |
| 722 | req->in.numargs = 1; |
| 723 | req->in.args[0].size = sizeof(inarg); |
| 724 | req->in.args[0].value = &inarg; |
| 725 | request_send(fc, req); |
| 726 | err = req->out.h.error; |
| 727 | fuse_put_request(fc, req); |
| 728 | if (err == -ENOSYS) { |
| 729 | fc->no_access = 1; |
| 730 | err = 0; |
| 731 | } |
| 732 | return err; |
| 733 | } |
| 734 | #endif |
| 735 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 736 | /* |
| 737 | * Check permission. The two basic access models of FUSE are: |
| 738 | * |
| 739 | * 1) Local access checking ('default_permissions' mount option) based |
| 740 | * on file mode. This is the plain old disk filesystem permission |
| 741 | * modell. |
| 742 | * |
| 743 | * 2) "Remote" access checking, where server is responsible for |
| 744 | * checking permission in each inode operation. An exception to this |
| 745 | * is if ->permission() was invoked from sys_access() in which case an |
| 746 | * access request is sent. Execute permission is still checked |
| 747 | * locally based on file mode. |
| 748 | */ |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 749 | static int fuse_permission(struct inode *inode, int mask, struct nameidata *nd) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 750 | { |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 751 | struct fuse_conn *fc = get_fuse_conn(inode); |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 752 | |
Miklos Szeredi | 9c1b68d | 2005-04-28 09:55:09 +0000 | [diff] [blame] | 753 | if (!fuse_allow_task(fc, current)) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 754 | return -EACCES; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 755 | else if (fc->flags & FUSE_DEFAULT_PERMISSIONS) { |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 756 | #ifdef KERNEL_2_6_10_PLUS |
Miklos Szeredi | fcf9f8d | 2005-09-08 14:28:54 +0000 | [diff] [blame] | 757 | int err = generic_permission(inode, mask, NULL); |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 758 | #else |
Miklos Szeredi | fcf9f8d | 2005-09-08 14:28:54 +0000 | [diff] [blame] | 759 | int err = vfs_permission(inode, mask); |
Miklos Szeredi | 08ddb8e | 2004-11-14 09:19:51 +0000 | [diff] [blame] | 760 | #endif |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 761 | |
| 762 | /* If permission is denied, try to refresh file |
| 763 | attributes. This is also needed, because the root |
| 764 | node will at first have no permissions */ |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 765 | if (err == -EACCES) { |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 766 | err = fuse_do_getattr(inode); |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 767 | if (!err) |
| 768 | #ifdef KERNEL_2_6_10_PLUS |
Miklos Szeredi | 08ddb8e | 2004-11-14 09:19:51 +0000 | [diff] [blame] | 769 | err = generic_permission(inode, mask, NULL); |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 770 | #else |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 771 | err = vfs_permission(inode, mask); |
Miklos Szeredi | 08ddb8e | 2004-11-14 09:19:51 +0000 | [diff] [blame] | 772 | #endif |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 773 | } |
| 774 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 775 | /* Note: the opposite of the above test does not |
| 776 | exist. So if permissions are revoked this won't be |
| 777 | noticed immediately, only after the attribute |
| 778 | timeout has expired */ |
Miklos Szeredi | fcf9f8d | 2005-09-08 14:28:54 +0000 | [diff] [blame] | 779 | |
| 780 | return err; |
Miklos Szeredi | 96dfad7 | 2004-11-30 00:00:02 +0000 | [diff] [blame] | 781 | } else { |
| 782 | int mode = inode->i_mode; |
Miklos Szeredi | 52cb09d | 2005-11-07 11:59:00 +0000 | [diff] [blame] | 783 | #ifndef KERNEL_2_6_11_PLUS |
Miklos Szeredi | 96dfad7 | 2004-11-30 00:00:02 +0000 | [diff] [blame] | 784 | if ((mask & MAY_WRITE) && IS_RDONLY(inode) && |
| 785 | (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))) |
| 786 | return -EROFS; |
Miklos Szeredi | 52cb09d | 2005-11-07 11:59:00 +0000 | [diff] [blame] | 787 | #endif |
Miklos Szeredi | 96dfad7 | 2004-11-30 00:00:02 +0000 | [diff] [blame] | 788 | if ((mask & MAY_EXEC) && !S_ISDIR(mode) && !(mode & S_IXUGO)) |
| 789 | return -EACCES; |
Miklos Szeredi | b0b13d1 | 2005-10-26 12:53:25 +0000 | [diff] [blame] | 790 | |
| 791 | #ifdef KERNEL_2_6 |
| 792 | if (nd && (nd->flags & LOOKUP_ACCESS)) |
| 793 | return fuse_access(inode, mask); |
| 794 | #endif |
Miklos Szeredi | fcf9f8d | 2005-09-08 14:28:54 +0000 | [diff] [blame] | 795 | return 0; |
Miklos Szeredi | 96dfad7 | 2004-11-30 00:00:02 +0000 | [diff] [blame] | 796 | } |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 797 | } |
| 798 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 799 | static int parse_dirfile(char *buf, size_t nbytes, struct file *file, |
| 800 | void *dstbuf, filldir_t filldir) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 801 | { |
Miklos Szeredi | 044da2e | 2005-12-06 17:59:55 +0000 | [diff] [blame] | 802 | struct fuse_conn *fc = get_fuse_conn(file->f_dentry->d_inode); |
| 803 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 804 | while (nbytes >= FUSE_NAME_OFFSET) { |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 805 | struct fuse_dirent *dirent = (struct fuse_dirent *) buf; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 806 | size_t reclen = FUSE_DIRENT_SIZE(dirent); |
| 807 | int over; |
Miklos Szeredi | 044da2e | 2005-12-06 17:59:55 +0000 | [diff] [blame] | 808 | if (!dirent->namelen || dirent->namelen > fc->name_max) |
Miklos Szeredi | e56818b | 2004-12-12 11:45:24 +0000 | [diff] [blame] | 809 | return -EIO; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 810 | if (reclen > nbytes) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 811 | break; |
| 812 | |
| 813 | over = filldir(dstbuf, dirent->name, dirent->namelen, |
Miklos Szeredi | 18fce98 | 2005-04-01 21:07:35 +0000 | [diff] [blame] | 814 | file->f_pos, dirent->ino, dirent->type); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 815 | if (over) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 816 | break; |
| 817 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 818 | buf += reclen; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 819 | nbytes -= reclen; |
Miklos Szeredi | 18fce98 | 2005-04-01 21:07:35 +0000 | [diff] [blame] | 820 | file->f_pos = dirent->off; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 821 | } |
| 822 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 823 | return 0; |
| 824 | } |
| 825 | |
Miklos Szeredi | 1adb227 | 2005-01-18 21:19:58 +0000 | [diff] [blame] | 826 | static inline size_t fuse_send_readdir(struct fuse_req *req, struct file *file, |
| 827 | struct inode *inode, loff_t pos, |
| 828 | size_t count) |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 829 | { |
Miklos Szeredi | 1adb227 | 2005-01-18 21:19:58 +0000 | [diff] [blame] | 830 | return fuse_send_read_common(req, file, inode, pos, count, 1); |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 831 | } |
| 832 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 833 | static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir) |
| 834 | { |
Miklos Szeredi | 1adb227 | 2005-01-18 21:19:58 +0000 | [diff] [blame] | 835 | int err; |
| 836 | size_t nbytes; |
| 837 | struct page *page; |
Miklos Szeredi | e22acbe | 2005-01-20 08:37:30 +0000 | [diff] [blame] | 838 | struct inode *inode = file->f_dentry->d_inode; |
Miklos Szeredi | 1adb227 | 2005-01-18 21:19:58 +0000 | [diff] [blame] | 839 | struct fuse_conn *fc = get_fuse_conn(inode); |
Miklos Szeredi | c53cddd | 2005-12-07 12:57:59 +0000 | [diff] [blame] | 840 | struct fuse_req *req; |
| 841 | |
| 842 | if (is_bad_inode(inode)) |
| 843 | return -EIO; |
| 844 | |
| 845 | req = fuse_get_request(fc); |
Miklos Szeredi | 1adb227 | 2005-01-18 21:19:58 +0000 | [diff] [blame] | 846 | if (!req) |
Miklos Szeredi | 3ead28e | 2005-01-18 21:23:41 +0000 | [diff] [blame] | 847 | return -EINTR; |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 848 | |
Miklos Szeredi | 1adb227 | 2005-01-18 21:19:58 +0000 | [diff] [blame] | 849 | page = alloc_page(GFP_KERNEL); |
| 850 | if (!page) { |
| 851 | fuse_put_request(fc, req); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 852 | return -ENOMEM; |
Miklos Szeredi | 1adb227 | 2005-01-18 21:19:58 +0000 | [diff] [blame] | 853 | } |
| 854 | req->num_pages = 1; |
| 855 | req->pages[0] = page; |
| 856 | nbytes = fuse_send_readdir(req, file, inode, file->f_pos, PAGE_SIZE); |
| 857 | err = req->out.h.error; |
| 858 | fuse_put_request(fc, req); |
| 859 | if (!err) |
| 860 | err = parse_dirfile(page_address(page), nbytes, file, dstbuf, |
| 861 | filldir); |
Miklos Szeredi | aa63b6b | 2004-12-03 13:24:35 +0000 | [diff] [blame] | 862 | |
Miklos Szeredi | 1adb227 | 2005-01-18 21:19:58 +0000 | [diff] [blame] | 863 | __free_page(page); |
Miklos Szeredi | 1b18802 | 2005-07-28 11:07:29 +0000 | [diff] [blame] | 864 | fuse_invalidate_attr(inode); /* atime changed */ |
Miklos Szeredi | 1adb227 | 2005-01-18 21:19:58 +0000 | [diff] [blame] | 865 | return err; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 866 | } |
| 867 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 868 | static char *read_link(struct dentry *dentry) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 869 | { |
| 870 | struct inode *inode = dentry->d_inode; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 871 | struct fuse_conn *fc = get_fuse_conn(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 872 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 873 | char *link; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 874 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 875 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 876 | return ERR_PTR(-EINTR); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 877 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 878 | link = (char *) __get_free_page(GFP_KERNEL); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 879 | if (!link) { |
| 880 | link = ERR_PTR(-ENOMEM); |
| 881 | goto out; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 882 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 883 | req->in.h.opcode = FUSE_READLINK; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 884 | req->in.h.nodeid = get_node_id(inode); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 885 | req->inode = inode; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 886 | req->out.argvar = 1; |
| 887 | req->out.numargs = 1; |
| 888 | req->out.args[0].size = PAGE_SIZE - 1; |
| 889 | req->out.args[0].value = link; |
| 890 | request_send(fc, req); |
| 891 | if (req->out.h.error) { |
| 892 | free_page((unsigned long) link); |
| 893 | link = ERR_PTR(req->out.h.error); |
| 894 | } else |
| 895 | link[req->out.args[0].size] = '\0'; |
| 896 | out: |
| 897 | fuse_put_request(fc, req); |
Miklos Szeredi | 1b18802 | 2005-07-28 11:07:29 +0000 | [diff] [blame] | 898 | fuse_invalidate_attr(inode); /* atime changed */ |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 899 | return link; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 900 | } |
| 901 | |
| 902 | static void free_link(char *link) |
| 903 | { |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 904 | if (!IS_ERR(link)) |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 905 | free_page((unsigned long) link); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 906 | } |
| 907 | |
Miklos Szeredi | 5648781 | 2005-09-02 13:05:06 +0000 | [diff] [blame] | 908 | #ifdef KERNEL_2_6_13_PLUS |
| 909 | static void *fuse_follow_link(struct dentry *dentry, struct nameidata *nd) |
| 910 | { |
| 911 | nd_set_link(nd, read_link(dentry)); |
| 912 | return NULL; |
| 913 | } |
| 914 | |
| 915 | static void fuse_put_link(struct dentry *dentry, struct nameidata *nd, void *c) |
| 916 | { |
| 917 | free_link(nd_get_link(nd)); |
| 918 | } |
| 919 | #elif defined(KERNEL_2_6_8_PLUS) |
Miklos Szeredi | 8139452 | 2005-01-11 14:24:18 +0000 | [diff] [blame] | 920 | static int fuse_follow_link(struct dentry *dentry, struct nameidata *nd) |
| 921 | { |
| 922 | nd_set_link(nd, read_link(dentry)); |
| 923 | return 0; |
| 924 | } |
| 925 | |
| 926 | static void fuse_put_link(struct dentry *dentry, struct nameidata *nd) |
| 927 | { |
| 928 | free_link(nd_get_link(nd)); |
| 929 | } |
| 930 | #else |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 931 | static int fuse_readlink(struct dentry *dentry, char __user *buffer, |
| 932 | int buflen) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 933 | { |
| 934 | int ret; |
| 935 | char *link; |
| 936 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 937 | link = read_link(dentry); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 938 | ret = vfs_readlink(dentry, buffer, buflen, link); |
| 939 | free_link(link); |
| 940 | return ret; |
| 941 | } |
| 942 | |
| 943 | static int fuse_follow_link(struct dentry *dentry, struct nameidata *nd) |
| 944 | { |
| 945 | int ret; |
| 946 | char *link; |
| 947 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 948 | link = read_link(dentry); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 949 | ret = vfs_follow_link(nd, link); |
| 950 | free_link(link); |
| 951 | return ret; |
| 952 | } |
Miklos Szeredi | 8139452 | 2005-01-11 14:24:18 +0000 | [diff] [blame] | 953 | #endif |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 954 | |
| 955 | static int fuse_dir_open(struct inode *inode, struct file *file) |
| 956 | { |
Miklos Szeredi | 1adb227 | 2005-01-18 21:19:58 +0000 | [diff] [blame] | 957 | return fuse_open_common(inode, file, 1); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 958 | } |
| 959 | |
| 960 | static int fuse_dir_release(struct inode *inode, struct file *file) |
| 961 | { |
Miklos Szeredi | 1adb227 | 2005-01-18 21:19:58 +0000 | [diff] [blame] | 962 | return fuse_release_common(inode, file, 1); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 963 | } |
| 964 | |
Miklos Szeredi | 4283ee7 | 2005-03-21 12:09:04 +0000 | [diff] [blame] | 965 | static int fuse_dir_fsync(struct file *file, struct dentry *de, int datasync) |
| 966 | { |
Miklos Szeredi | b7640d2 | 2005-04-08 15:15:28 +0000 | [diff] [blame] | 967 | /* nfsd can call this with no file */ |
| 968 | return file ? fuse_fsync_common(file, de, datasync, 1) : 0; |
Miklos Szeredi | 4283ee7 | 2005-03-21 12:09:04 +0000 | [diff] [blame] | 969 | } |
| 970 | |
Miklos Szeredi | 11509ce | 2005-10-26 16:04:04 +0000 | [diff] [blame] | 971 | static void iattr_to_fattr(struct iattr *iattr, struct fuse_setattr_in *arg) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 972 | { |
Miklos Szeredi | 83a0744 | 2004-11-30 18:25:20 +0000 | [diff] [blame] | 973 | unsigned ivalid = iattr->ia_valid; |
Miklos Szeredi | aa63b6b | 2004-12-03 13:24:35 +0000 | [diff] [blame] | 974 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 975 | if (ivalid & ATTR_MODE) |
Miklos Szeredi | 11509ce | 2005-10-26 16:04:04 +0000 | [diff] [blame] | 976 | arg->valid |= FATTR_MODE, arg->mode = iattr->ia_mode; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 977 | if (ivalid & ATTR_UID) |
Miklos Szeredi | 11509ce | 2005-10-26 16:04:04 +0000 | [diff] [blame] | 978 | arg->valid |= FATTR_UID, arg->uid = iattr->ia_uid; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 979 | if (ivalid & ATTR_GID) |
Miklos Szeredi | 11509ce | 2005-10-26 16:04:04 +0000 | [diff] [blame] | 980 | arg->valid |= FATTR_GID, arg->gid = iattr->ia_gid; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 981 | if (ivalid & ATTR_SIZE) |
Miklos Szeredi | 11509ce | 2005-10-26 16:04:04 +0000 | [diff] [blame] | 982 | arg->valid |= FATTR_SIZE, arg->size = iattr->ia_size; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 983 | /* You can only _set_ these together (they may change by themselves) */ |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 984 | if ((ivalid & (ATTR_ATIME | ATTR_MTIME)) == (ATTR_ATIME | ATTR_MTIME)) { |
Miklos Szeredi | 11509ce | 2005-10-26 16:04:04 +0000 | [diff] [blame] | 985 | arg->valid |= FATTR_ATIME | FATTR_MTIME; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 986 | #ifdef KERNEL_2_6 |
Miklos Szeredi | 11509ce | 2005-10-26 16:04:04 +0000 | [diff] [blame] | 987 | arg->atime = iattr->ia_atime.tv_sec; |
| 988 | arg->mtime = iattr->ia_mtime.tv_sec; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 989 | #else |
Miklos Szeredi | 11509ce | 2005-10-26 16:04:04 +0000 | [diff] [blame] | 990 | arg->atime = iattr->ia_atime; |
| 991 | arg->mtime = iattr->ia_mtime; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 992 | #endif |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 993 | } |
Miklos Szeredi | 11509ce | 2005-10-26 16:04:04 +0000 | [diff] [blame] | 994 | #ifdef ATTR_FILE |
| 995 | if (ivalid & ATTR_FILE) { |
| 996 | struct fuse_file *ff = iattr->ia_file->private_data; |
| 997 | arg->valid |= FATTR_FH; |
| 998 | arg->fh = ff->fh; |
| 999 | } |
| 1000 | #endif |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 1001 | } |
| 1002 | |
Miklos Szeredi | fb02fec | 2005-11-29 15:24:02 +0000 | [diff] [blame] | 1003 | /* |
| 1004 | * Set attributes, and at the same time refresh them. |
| 1005 | * |
| 1006 | * Truncation is slightly complicated, because the 'truncate' request |
| 1007 | * may fail, in which case we don't want to touch the mapping. |
| 1008 | * vmtruncate() doesn't allow for this case. So do the rlimit |
| 1009 | * checking by hand and call vmtruncate() only after the file has |
| 1010 | * actually been truncated. |
| 1011 | */ |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 1012 | static int fuse_setattr(struct dentry *entry, struct iattr *attr) |
| 1013 | { |
| 1014 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 1015 | struct fuse_conn *fc = get_fuse_conn(inode); |
| 1016 | struct fuse_inode *fi = get_fuse_inode(inode); |
Miklos Szeredi | 58615e0 | 2004-07-04 21:21:08 +0000 | [diff] [blame] | 1017 | struct fuse_req *req; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 1018 | struct fuse_setattr_in inarg; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 1019 | struct fuse_attr_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1020 | int err; |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 1021 | int is_truncate = 0; |
Miklos Szeredi | aa63b6b | 2004-12-03 13:24:35 +0000 | [diff] [blame] | 1022 | |
Miklos Szeredi | 94ed76a | 2004-07-26 19:38:45 +0000 | [diff] [blame] | 1023 | if (fc->flags & FUSE_DEFAULT_PERMISSIONS) { |
| 1024 | err = inode_change_ok(inode, attr); |
| 1025 | if (err) |
| 1026 | return err; |
| 1027 | } |
Miklos Szeredi | 58615e0 | 2004-07-04 21:21:08 +0000 | [diff] [blame] | 1028 | |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 1029 | if (attr->ia_valid & ATTR_SIZE) { |
| 1030 | unsigned long limit; |
| 1031 | is_truncate = 1; |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 1032 | #ifdef KERNEL_2_6_10_PLUS |
Miklos Szeredi | 08ddb8e | 2004-11-14 09:19:51 +0000 | [diff] [blame] | 1033 | limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur; |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 1034 | #else |
| 1035 | limit = current->rlim[RLIMIT_FSIZE].rlim_cur; |
Miklos Szeredi | 08ddb8e | 2004-11-14 09:19:51 +0000 | [diff] [blame] | 1036 | #endif |
| 1037 | if (limit != RLIM_INFINITY && attr->ia_size > (loff_t) limit) { |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 1038 | send_sig(SIGXFSZ, current, 0); |
| 1039 | return -EFBIG; |
| 1040 | } |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 1041 | } |
Miklos Szeredi | 58615e0 | 2004-07-04 21:21:08 +0000 | [diff] [blame] | 1042 | |
| 1043 | req = fuse_get_request(fc); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1044 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 1045 | return -EINTR; |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 1046 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 1047 | memset(&inarg, 0, sizeof(inarg)); |
Miklos Szeredi | 11509ce | 2005-10-26 16:04:04 +0000 | [diff] [blame] | 1048 | iattr_to_fattr(attr, &inarg); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1049 | req->in.h.opcode = FUSE_SETATTR; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 1050 | req->in.h.nodeid = get_node_id(inode); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 1051 | req->inode = inode; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1052 | req->in.numargs = 1; |
| 1053 | req->in.args[0].size = sizeof(inarg); |
| 1054 | req->in.args[0].value = &inarg; |
| 1055 | req->out.numargs = 1; |
| 1056 | req->out.args[0].size = sizeof(outarg); |
| 1057 | req->out.args[0].value = &outarg; |
| 1058 | request_send(fc, req); |
| 1059 | err = req->out.h.error; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1060 | fuse_put_request(fc, req); |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 1061 | if (!err) { |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 1062 | if ((inode->i_mode ^ outarg.attr.mode) & S_IFMT) { |
Miklos Szeredi | 9f60c49 | 2005-09-08 14:34:48 +0000 | [diff] [blame] | 1063 | #ifndef KERNEL_2_6_12_PLUS |
Miklos Szeredi | dbe0f65 | 2005-01-15 14:32:56 +0000 | [diff] [blame] | 1064 | if (get_node_id(inode) != FUSE_ROOT_ID) |
| 1065 | make_bad_inode(inode); |
Miklos Szeredi | e22acbe | 2005-01-20 08:37:30 +0000 | [diff] [blame] | 1066 | #else |
| 1067 | make_bad_inode(inode); |
| 1068 | #endif |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 1069 | err = -EIO; |
| 1070 | } else { |
| 1071 | if (is_truncate) { |
| 1072 | loff_t origsize = i_size_read(inode); |
| 1073 | i_size_write(inode, outarg.attr.size); |
| 1074 | if (origsize > outarg.attr.size) |
| 1075 | vmtruncate(inode, outarg.attr.size); |
| 1076 | } |
| 1077 | fuse_change_attributes(inode, &outarg.attr); |
| 1078 | fi->i_time = time_to_jiffies(outarg.attr_valid, |
| 1079 | outarg.attr_valid_nsec); |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 1080 | } |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 1081 | } else if (err == -EINTR) |
| 1082 | fuse_invalidate_attr(inode); |
Miklos Szeredi | aa63b6b | 2004-12-03 13:24:35 +0000 | [diff] [blame] | 1083 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1084 | return err; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 1085 | } |
| 1086 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1087 | #ifdef KERNEL_2_6 |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1088 | static int fuse_getattr(struct vfsmount *mnt, struct dentry *entry, |
| 1089 | struct kstat *stat) |
| 1090 | { |
| 1091 | struct inode *inode = entry->d_inode; |
| 1092 | int err = fuse_revalidate(entry); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 1093 | if (!err) |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1094 | generic_fillattr(inode, stat); |
Miklos Szeredi | aa63b6b | 2004-12-03 13:24:35 +0000 | [diff] [blame] | 1095 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1096 | return err; |
| 1097 | } |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1098 | #else /* KERNEL_2_6 */ |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 1099 | static struct dentry *fuse_lookup_2_4(struct inode *dir, struct dentry *entry) |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1100 | { |
Miklos Szeredi | 2b47811 | 2005-11-28 13:27:10 +0000 | [diff] [blame] | 1101 | return fuse_lookup(dir, entry, NULL); |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1102 | } |
| 1103 | |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 1104 | static int fuse_mknod_2_4(struct inode *dir, struct dentry *entry, int mode, |
Miklos Szeredi | 83a0744 | 2004-11-30 18:25:20 +0000 | [diff] [blame] | 1105 | int rdev) |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1106 | { |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 1107 | return fuse_mknod(dir, entry, mode, rdev); |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1108 | } |
| 1109 | |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 1110 | static int fuse_create_2_4(struct inode *dir, struct dentry *entry, int mode) |
| 1111 | { |
| 1112 | return fuse_create(dir, entry, mode, NULL); |
| 1113 | } |
| 1114 | |
| 1115 | static int fuse_permission_2_4(struct inode *inode, int mask) |
| 1116 | { |
| 1117 | return fuse_permission(inode, mask, NULL); |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1118 | } |
| 1119 | #endif /* KERNEL_2_6 */ |
| 1120 | |
| 1121 | #ifdef HAVE_KERNEL_XATTR |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1122 | #ifdef KERNEL_2_6 |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1123 | static int fuse_setxattr(struct dentry *entry, const char *name, |
| 1124 | const void *value, size_t size, int flags) |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1125 | #else |
| 1126 | static int fuse_setxattr(struct dentry *entry, const char *name, |
| 1127 | void *value, size_t size, int flags) |
| 1128 | #endif |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1129 | { |
| 1130 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 1131 | struct fuse_conn *fc = get_fuse_conn(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1132 | struct fuse_req *req; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1133 | struct fuse_setxattr_in inarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1134 | int err; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1135 | |
Miklos Szeredi | 044da2e | 2005-12-06 17:59:55 +0000 | [diff] [blame] | 1136 | if (size > fc->xattr_size_max) |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 1137 | return -E2BIG; |
| 1138 | |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1139 | if (fc->no_setxattr) |
| 1140 | return -EOPNOTSUPP; |
| 1141 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1142 | req = fuse_get_request(fc); |
| 1143 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 1144 | return -EINTR; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1145 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1146 | memset(&inarg, 0, sizeof(inarg)); |
| 1147 | inarg.size = size; |
| 1148 | inarg.flags = flags; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1149 | req->in.h.opcode = FUSE_SETXATTR; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 1150 | req->in.h.nodeid = get_node_id(inode); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 1151 | req->inode = inode; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1152 | req->in.numargs = 3; |
| 1153 | req->in.args[0].size = sizeof(inarg); |
| 1154 | req->in.args[0].value = &inarg; |
| 1155 | req->in.args[1].size = strlen(name) + 1; |
| 1156 | req->in.args[1].value = name; |
| 1157 | req->in.args[2].size = size; |
| 1158 | req->in.args[2].value = value; |
| 1159 | request_send(fc, req); |
| 1160 | err = req->out.h.error; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 1161 | fuse_put_request(fc, req); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1162 | if (err == -ENOSYS) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1163 | fc->no_setxattr = 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1164 | err = -EOPNOTSUPP; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1165 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1166 | return err; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1167 | } |
| 1168 | |
| 1169 | static ssize_t fuse_getxattr(struct dentry *entry, const char *name, |
| 1170 | void *value, size_t size) |
| 1171 | { |
| 1172 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 1173 | struct fuse_conn *fc = get_fuse_conn(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1174 | struct fuse_req *req; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1175 | struct fuse_getxattr_in inarg; |
| 1176 | struct fuse_getxattr_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1177 | ssize_t ret; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1178 | |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1179 | if (fc->no_getxattr) |
| 1180 | return -EOPNOTSUPP; |
| 1181 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1182 | req = fuse_get_request(fc); |
| 1183 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 1184 | return -EINTR; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1185 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1186 | memset(&inarg, 0, sizeof(inarg)); |
| 1187 | inarg.size = size; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1188 | req->in.h.opcode = FUSE_GETXATTR; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 1189 | req->in.h.nodeid = get_node_id(inode); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 1190 | req->inode = inode; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1191 | req->in.numargs = 2; |
| 1192 | req->in.args[0].size = sizeof(inarg); |
| 1193 | req->in.args[0].value = &inarg; |
| 1194 | req->in.args[1].size = strlen(name) + 1; |
| 1195 | req->in.args[1].value = name; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1196 | /* This is really two different operations rolled into one */ |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1197 | req->out.numargs = 1; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 1198 | if (size) { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1199 | req->out.argvar = 1; |
| 1200 | req->out.args[0].size = size; |
| 1201 | req->out.args[0].value = value; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1202 | } else { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1203 | req->out.args[0].size = sizeof(outarg); |
| 1204 | req->out.args[0].value = &outarg; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1205 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1206 | request_send(fc, req); |
| 1207 | ret = req->out.h.error; |
| 1208 | if (!ret) |
| 1209 | ret = size ? req->out.args[0].size : outarg.size; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1210 | else { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1211 | if (ret == -ENOSYS) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1212 | fc->no_getxattr = 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1213 | ret = -EOPNOTSUPP; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1214 | } |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1215 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1216 | fuse_put_request(fc, req); |
| 1217 | return ret; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1218 | } |
| 1219 | |
| 1220 | static ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size) |
| 1221 | { |
| 1222 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 1223 | struct fuse_conn *fc = get_fuse_conn(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1224 | struct fuse_req *req; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1225 | struct fuse_getxattr_in inarg; |
| 1226 | struct fuse_getxattr_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1227 | ssize_t ret; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1228 | |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1229 | if (fc->no_listxattr) |
| 1230 | return -EOPNOTSUPP; |
| 1231 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1232 | req = fuse_get_request(fc); |
| 1233 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 1234 | return -EINTR; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1235 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1236 | memset(&inarg, 0, sizeof(inarg)); |
| 1237 | inarg.size = size; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1238 | req->in.h.opcode = FUSE_LISTXATTR; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 1239 | req->in.h.nodeid = get_node_id(inode); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 1240 | req->inode = inode; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1241 | req->in.numargs = 1; |
| 1242 | req->in.args[0].size = sizeof(inarg); |
| 1243 | req->in.args[0].value = &inarg; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1244 | /* This is really two different operations rolled into one */ |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1245 | req->out.numargs = 1; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 1246 | if (size) { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1247 | req->out.argvar = 1; |
| 1248 | req->out.args[0].size = size; |
| 1249 | req->out.args[0].value = list; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1250 | } else { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1251 | req->out.args[0].size = sizeof(outarg); |
| 1252 | req->out.args[0].value = &outarg; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1253 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1254 | request_send(fc, req); |
| 1255 | ret = req->out.h.error; |
| 1256 | if (!ret) |
| 1257 | ret = size ? req->out.args[0].size : outarg.size; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1258 | else { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1259 | if (ret == -ENOSYS) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1260 | fc->no_listxattr = 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1261 | ret = -EOPNOTSUPP; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1262 | } |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1263 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1264 | fuse_put_request(fc, req); |
| 1265 | return ret; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1266 | } |
| 1267 | |
| 1268 | static int fuse_removexattr(struct dentry *entry, const char *name) |
| 1269 | { |
| 1270 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 1271 | struct fuse_conn *fc = get_fuse_conn(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1272 | struct fuse_req *req; |
| 1273 | int err; |
Miklos Szeredi | aa63b6b | 2004-12-03 13:24:35 +0000 | [diff] [blame] | 1274 | |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1275 | if (fc->no_removexattr) |
| 1276 | return -EOPNOTSUPP; |
| 1277 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1278 | req = fuse_get_request(fc); |
| 1279 | if (!req) |
Miklos Szeredi | f94e010 | 2005-05-12 14:56:34 +0000 | [diff] [blame] | 1280 | return -EINTR; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1281 | |
| 1282 | req->in.h.opcode = FUSE_REMOVEXATTR; |
Miklos Szeredi | 039322d | 2004-12-01 18:39:12 +0000 | [diff] [blame] | 1283 | req->in.h.nodeid = get_node_id(inode); |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 1284 | req->inode = inode; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1285 | req->in.numargs = 1; |
| 1286 | req->in.args[0].size = strlen(name) + 1; |
| 1287 | req->in.args[0].value = name; |
| 1288 | request_send(fc, req); |
| 1289 | err = req->out.h.error; |
Miklos Szeredi | 0fcfa03 | 2004-12-13 15:22:28 +0000 | [diff] [blame] | 1290 | fuse_put_request(fc, req); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1291 | if (err == -ENOSYS) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1292 | fc->no_removexattr = 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1293 | err = -EOPNOTSUPP; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1294 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1295 | return err; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1296 | } |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1297 | #endif |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1298 | |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 1299 | static struct inode_operations fuse_dir_inode_operations = { |
Miklos Szeredi | bb4b974 | 2005-11-29 11:29:44 +0000 | [diff] [blame] | 1300 | #ifdef KERNEL_2_6 |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1301 | .lookup = fuse_lookup, |
Miklos Szeredi | bb4b974 | 2005-11-29 11:29:44 +0000 | [diff] [blame] | 1302 | #else |
| 1303 | .lookup = fuse_lookup_2_4, |
| 1304 | #endif |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1305 | .mkdir = fuse_mkdir, |
| 1306 | .symlink = fuse_symlink, |
| 1307 | .unlink = fuse_unlink, |
| 1308 | .rmdir = fuse_rmdir, |
| 1309 | .rename = fuse_rename, |
| 1310 | .link = fuse_link, |
| 1311 | .setattr = fuse_setattr, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1312 | #ifdef KERNEL_2_6 |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 1313 | .create = fuse_create, |
| 1314 | .mknod = fuse_mknod, |
| 1315 | .permission = fuse_permission, |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1316 | .getattr = fuse_getattr, |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1317 | #else |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 1318 | .create = fuse_create_2_4, |
| 1319 | .mknod = fuse_mknod_2_4, |
| 1320 | .permission = fuse_permission_2_4, |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1321 | .revalidate = fuse_revalidate, |
| 1322 | #endif |
| 1323 | #ifdef HAVE_KERNEL_XATTR |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1324 | .setxattr = fuse_setxattr, |
| 1325 | .getxattr = fuse_getxattr, |
| 1326 | .listxattr = fuse_listxattr, |
| 1327 | .removexattr = fuse_removexattr, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1328 | #endif |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1329 | }; |
| 1330 | |
| 1331 | static struct file_operations fuse_dir_operations = { |
Miklos Szeredi | f43f063 | 2005-02-28 11:46:56 +0000 | [diff] [blame] | 1332 | .llseek = generic_file_llseek, |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1333 | .read = generic_read_dir, |
| 1334 | .readdir = fuse_readdir, |
| 1335 | .open = fuse_dir_open, |
| 1336 | .release = fuse_dir_release, |
Miklos Szeredi | 4283ee7 | 2005-03-21 12:09:04 +0000 | [diff] [blame] | 1337 | .fsync = fuse_dir_fsync, |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1338 | }; |
| 1339 | |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 1340 | static struct inode_operations fuse_common_inode_operations = { |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1341 | .setattr = fuse_setattr, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1342 | #ifdef KERNEL_2_6 |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 1343 | .permission = fuse_permission, |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1344 | .getattr = fuse_getattr, |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1345 | #else |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 1346 | .permission = fuse_permission_2_4, |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1347 | .revalidate = fuse_revalidate, |
| 1348 | #endif |
| 1349 | #ifdef HAVE_KERNEL_XATTR |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1350 | .setxattr = fuse_setxattr, |
| 1351 | .getxattr = fuse_getxattr, |
| 1352 | .listxattr = fuse_listxattr, |
| 1353 | .removexattr = fuse_removexattr, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1354 | #endif |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1355 | }; |
| 1356 | |
Miklos Szeredi | 13ed482 | 2004-11-20 11:12:21 +0000 | [diff] [blame] | 1357 | static struct inode_operations fuse_symlink_inode_operations = { |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1358 | .setattr = fuse_setattr, |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1359 | .follow_link = fuse_follow_link, |
Miklos Szeredi | 7a98395 | 2005-01-28 09:58:19 +0000 | [diff] [blame] | 1360 | #ifdef KERNEL_2_6_8_PLUS |
Miklos Szeredi | 8139452 | 2005-01-11 14:24:18 +0000 | [diff] [blame] | 1361 | .put_link = fuse_put_link, |
| 1362 | .readlink = generic_readlink, |
| 1363 | #else |
| 1364 | .readlink = fuse_readlink, |
| 1365 | #endif |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1366 | #ifdef KERNEL_2_6 |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1367 | .getattr = fuse_getattr, |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1368 | #else |
| 1369 | .revalidate = fuse_revalidate, |
| 1370 | #endif |
| 1371 | #ifdef HAVE_KERNEL_XATTR |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1372 | .setxattr = fuse_setxattr, |
| 1373 | .getxattr = fuse_getxattr, |
| 1374 | .listxattr = fuse_listxattr, |
| 1375 | .removexattr = fuse_removexattr, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1376 | #endif |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 1377 | }; |
| 1378 | |
Miklos Szeredi | 0f62d72 | 2005-01-04 12:45:54 +0000 | [diff] [blame] | 1379 | void fuse_init_common(struct inode *inode) |
| 1380 | { |
| 1381 | inode->i_op = &fuse_common_inode_operations; |
| 1382 | } |
| 1383 | |
| 1384 | void fuse_init_dir(struct inode *inode) |
| 1385 | { |
| 1386 | inode->i_op = &fuse_dir_inode_operations; |
| 1387 | inode->i_fop = &fuse_dir_operations; |
| 1388 | } |
| 1389 | |
| 1390 | void fuse_init_symlink(struct inode *inode) |
| 1391 | { |
| 1392 | inode->i_op = &fuse_symlink_inode_operations; |
| 1393 | } |