2 FUSE: Filesystem in Userspace
3 Copyright (C) 2001-2005 Miklos Szeredi <miklos@szeredi.hu>
5 This program can be distributed under the terms of the GNU GPL.
11 #include <linux/pagemap.h>
12 #include <linux/file.h>
13 #include <linux/gfp.h>
14 #include <linux/sched.h>
15 #include <linux/namei.h>
17 static inline unsigned long time_to_jiffies(unsigned long sec,
20 struct timespec ts = {sec, nsec};
21 return jiffies + timespec_to_jiffies(&ts);
24 static void fuse_lookup_init(struct fuse_req *req, struct inode *dir,
26 struct fuse_entry_out *outarg)
28 req->in.h.opcode = FUSE_LOOKUP;
29 req->in.h.nodeid = get_node_id(dir);
32 req->in.args[0].size = entry->d_name.len + 1;
33 req->in.args[0].value = entry->d_name.name;
35 req->out.args[0].size = sizeof(struct fuse_entry_out);
36 req->out.args[0].value = outarg;
39 static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
41 if (!entry->d_inode || is_bad_inode(entry->d_inode))
43 else if (time_after(jiffies, entry->d_time)) {
45 struct fuse_entry_out outarg;
46 struct inode *inode = entry->d_inode;
47 struct fuse_inode *fi = get_fuse_inode(inode);
48 struct fuse_conn *fc = get_fuse_conn(inode);
49 struct fuse_req *req = fuse_get_request_nonint(fc);
53 fuse_lookup_init(req, entry->d_parent->d_inode, entry, &outarg);
54 request_send_nonint(fc, req);
55 err = req->out.h.error;
57 if (outarg.nodeid != get_node_id(inode)) {
58 fuse_send_forget(fc, req, outarg.nodeid, 1);
63 fuse_put_request(fc, req);
64 if (err || (outarg.attr.mode ^ inode->i_mode) & S_IFMT)
67 fuse_change_attributes(inode, &outarg.attr);
68 entry->d_time = time_to_jiffies(outarg.entry_valid,
69 outarg.entry_valid_nsec);
70 fi->i_time = time_to_jiffies(outarg.attr_valid,
71 outarg.attr_valid_nsec);
76 static struct dentry_operations fuse_dentry_operations = {
77 .d_revalidate = fuse_dentry_revalidate,
80 static int fuse_lookup_iget(struct inode *dir, struct dentry *entry,
81 struct inode **inodep)
84 struct fuse_entry_out outarg;
85 struct inode *inode = NULL;
86 struct fuse_conn *fc = get_fuse_conn(dir);
89 if (entry->d_name.len > FUSE_NAME_MAX)
92 req = fuse_get_request(fc);
94 return -ERESTARTNOINTR;
96 fuse_lookup_init(req, dir, entry, &outarg);
97 request_send(fc, req);
98 err = req->out.h.error;
100 inode = fuse_iget(dir->i_sb, outarg.nodeid, outarg.generation,
103 fuse_send_forget(fc, req, outarg.nodeid, 1);
107 fuse_put_request(fc, req);
108 if (err && err != -ENOENT)
112 struct fuse_inode *fi = get_fuse_inode(inode);
113 entry->d_time = time_to_jiffies(outarg.entry_valid,
114 outarg.entry_valid_nsec);
115 fi->i_time = time_to_jiffies(outarg.attr_valid,
116 outarg.attr_valid_nsec);
119 entry->d_op = &fuse_dentry_operations;
124 void fuse_invalidate_attr(struct inode *inode)
126 get_fuse_inode(inode)->i_time = jiffies - 1;
129 static void fuse_invalidate_entry(struct dentry *entry)
132 entry->d_time = jiffies - 1;
135 static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req,
136 struct inode *dir, struct dentry *entry,
139 struct fuse_entry_out outarg;
141 struct fuse_inode *fi;
144 req->in.h.nodeid = get_node_id(dir);
146 req->out.numargs = 1;
147 req->out.args[0].size = sizeof(outarg);
148 req->out.args[0].value = &outarg;
149 request_send(fc, req);
150 err = req->out.h.error;
152 fuse_put_request(fc, req);
155 inode = fuse_iget(dir->i_sb, outarg.nodeid, outarg.generation,
158 fuse_send_forget(fc, req, outarg.nodeid, 1);
161 fuse_put_request(fc, req);
163 /* Don't allow userspace to do really stupid things... */
164 if ((inode->i_mode ^ mode) & S_IFMT) {
169 entry->d_time = time_to_jiffies(outarg.entry_valid,
170 outarg.entry_valid_nsec);
172 fi = get_fuse_inode(inode);
173 fi->i_time = time_to_jiffies(outarg.attr_valid,
174 outarg.attr_valid_nsec);
176 d_instantiate(entry, inode);
177 fuse_invalidate_attr(dir);
181 static int fuse_mknod(struct inode *dir, struct dentry *entry, int mode,
184 struct fuse_mknod_in inarg;
185 struct fuse_conn *fc = get_fuse_conn(dir);
186 struct fuse_req *req = fuse_get_request(fc);
188 return -ERESTARTNOINTR;
190 memset(&inarg, 0, sizeof(inarg));
192 inarg.rdev = new_encode_dev(rdev);
193 req->in.h.opcode = FUSE_MKNOD;
195 req->in.args[0].size = sizeof(inarg);
196 req->in.args[0].value = &inarg;
197 req->in.args[1].size = entry->d_name.len + 1;
198 req->in.args[1].value = entry->d_name.name;
199 return create_new_entry(fc, req, dir, entry, mode);
202 static int fuse_create(struct inode *dir, struct dentry *entry, int mode,
203 struct nameidata *nd)
205 return fuse_mknod(dir, entry, mode, 0);
208 static int fuse_mkdir(struct inode *dir, struct dentry *entry, int mode)
210 struct fuse_mkdir_in inarg;
211 struct fuse_conn *fc = get_fuse_conn(dir);
212 struct fuse_req *req = fuse_get_request(fc);
214 return -ERESTARTNOINTR;
216 memset(&inarg, 0, sizeof(inarg));
218 req->in.h.opcode = FUSE_MKDIR;
220 req->in.args[0].size = sizeof(inarg);
221 req->in.args[0].value = &inarg;
222 req->in.args[1].size = entry->d_name.len + 1;
223 req->in.args[1].value = entry->d_name.name;
224 return create_new_entry(fc, req, dir, entry, S_IFDIR);
227 static int fuse_symlink(struct inode *dir, struct dentry *entry,
230 struct fuse_conn *fc = get_fuse_conn(dir);
231 unsigned len = strlen(link) + 1;
232 struct fuse_req *req;
234 if (len > FUSE_SYMLINK_MAX)
235 return -ENAMETOOLONG;
237 req = fuse_get_request(fc);
239 return -ERESTARTNOINTR;
241 req->in.h.opcode = FUSE_SYMLINK;
243 req->in.args[0].size = entry->d_name.len + 1;
244 req->in.args[0].value = entry->d_name.name;
245 req->in.args[1].size = len;
246 req->in.args[1].value = link;
247 return create_new_entry(fc, req, dir, entry, S_IFLNK);
250 static int fuse_unlink(struct inode *dir, struct dentry *entry)
253 struct fuse_conn *fc = get_fuse_conn(dir);
254 struct fuse_req *req = fuse_get_request(fc);
256 return -ERESTARTNOINTR;
258 req->in.h.opcode = FUSE_UNLINK;
259 req->in.h.nodeid = get_node_id(dir);
262 req->in.args[0].size = entry->d_name.len + 1;
263 req->in.args[0].value = entry->d_name.name;
264 request_send(fc, req);
265 err = req->out.h.error;
266 fuse_put_request(fc, req);
268 struct inode *inode = entry->d_inode;
270 /* Set nlink to zero so the inode can be cleared, if
271 the inode does have more links this will be
272 discovered at the next lookup/getattr */
274 fuse_invalidate_attr(inode);
275 fuse_invalidate_attr(dir);
276 } else if (err == -EINTR)
277 fuse_invalidate_entry(entry);
281 static int fuse_rmdir(struct inode *dir, struct dentry *entry)
284 struct fuse_conn *fc = get_fuse_conn(dir);
285 struct fuse_req *req = fuse_get_request(fc);
287 return -ERESTARTNOINTR;
289 req->in.h.opcode = FUSE_RMDIR;
290 req->in.h.nodeid = get_node_id(dir);
293 req->in.args[0].size = entry->d_name.len + 1;
294 req->in.args[0].value = entry->d_name.name;
295 request_send(fc, req);
296 err = req->out.h.error;
297 fuse_put_request(fc, req);
299 entry->d_inode->i_nlink = 0;
300 fuse_invalidate_attr(dir);
301 } else if (err == -EINTR)
302 fuse_invalidate_entry(entry);
306 static int fuse_rename(struct inode *olddir, struct dentry *oldent,
307 struct inode *newdir, struct dentry *newent)
310 struct fuse_rename_in inarg;
311 struct fuse_conn *fc = get_fuse_conn(olddir);
312 struct fuse_req *req = fuse_get_request(fc);
314 return -ERESTARTNOINTR;
316 memset(&inarg, 0, sizeof(inarg));
317 inarg.newdir = get_node_id(newdir);
318 req->in.h.opcode = FUSE_RENAME;
319 req->in.h.nodeid = get_node_id(olddir);
321 req->inode2 = newdir;
323 req->in.args[0].size = sizeof(inarg);
324 req->in.args[0].value = &inarg;
325 req->in.args[1].size = oldent->d_name.len + 1;
326 req->in.args[1].value = oldent->d_name.name;
327 req->in.args[2].size = newent->d_name.len + 1;
328 req->in.args[2].value = newent->d_name.name;
329 request_send(fc, req);
330 err = req->out.h.error;
331 fuse_put_request(fc, req);
333 fuse_invalidate_attr(olddir);
334 if (olddir != newdir)
335 fuse_invalidate_attr(newdir);
336 } else if (err == -EINTR) {
337 /* If request was interrupted, DEITY only knows if the
338 rename actually took place. If the invalidation
339 fails (e.g. some process has CWD under the renamed
340 directory), then there can be inconsistency between
341 the dcache and the real filesystem. Tough luck. */
342 fuse_invalidate_entry(oldent);
344 fuse_invalidate_entry(newent);
350 static int fuse_link(struct dentry *entry, struct inode *newdir,
351 struct dentry *newent)
354 struct fuse_link_in inarg;
355 struct inode *inode = entry->d_inode;
356 struct fuse_conn *fc = get_fuse_conn(inode);
357 struct fuse_req *req = fuse_get_request(fc);
359 return -ERESTARTNOINTR;
361 memset(&inarg, 0, sizeof(inarg));
362 inarg.oldnodeid = get_node_id(inode);
363 req->in.h.opcode = FUSE_LINK;
366 req->in.args[0].size = sizeof(inarg);
367 req->in.args[0].value = &inarg;
368 req->in.args[1].size = newent->d_name.len + 1;
369 req->in.args[1].value = newent->d_name.name;
370 err = create_new_entry(fc, req, newdir, newent, inode->i_mode);
371 /* Contrary to "normal" filesystems it can happen that link
372 makes two "logical" inodes point to the same "physical"
373 inode. We invalidate the attributes of the old one, so it
374 will reflect changes in the backing inode (link count,
377 if (!err || err == -EINTR)
378 fuse_invalidate_attr(inode);
382 int fuse_do_getattr(struct inode *inode)
385 struct fuse_attr_out arg;
386 struct fuse_conn *fc = get_fuse_conn(inode);
387 struct fuse_req *req = fuse_get_request(fc);
389 return -ERESTARTNOINTR;
391 req->in.h.opcode = FUSE_GETATTR;
392 req->in.h.nodeid = get_node_id(inode);
394 req->out.numargs = 1;
395 req->out.args[0].size = sizeof(arg);
396 req->out.args[0].value = &arg;
397 request_send(fc, req);
398 err = req->out.h.error;
399 fuse_put_request(fc, req);
401 if ((inode->i_mode ^ arg.attr.mode) & S_IFMT) {
402 make_bad_inode(inode);
405 struct fuse_inode *fi = get_fuse_inode(inode);
406 fuse_change_attributes(inode, &arg.attr);
407 fi->i_time = time_to_jiffies(arg.attr_valid,
408 arg.attr_valid_nsec);
414 static int fuse_revalidate(struct dentry *entry)
416 struct inode *inode = entry->d_inode;
417 struct fuse_inode *fi = get_fuse_inode(inode);
418 struct fuse_conn *fc = get_fuse_conn(inode);
420 if (get_node_id(inode) == FUSE_ROOT_ID) {
421 if (!(fc->flags & FUSE_ALLOW_OTHER) &&
422 current->fsuid != fc->user_id)
424 } else if (time_before_eq(jiffies, fi->i_time))
427 return fuse_do_getattr(inode);
430 static int fuse_permission(struct inode *inode, int mask, struct nameidata *nd)
432 struct fuse_conn *fc = get_fuse_conn(inode);
434 if (!(fc->flags & FUSE_ALLOW_OTHER) && current->fsuid != fc->user_id)
436 else if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {
437 int err = generic_permission(inode, mask, NULL);
439 /* If permission is denied, try to refresh file
440 attributes. This is also needed, because the root
441 node will at first have no permissions */
442 if (err == -EACCES) {
443 err = fuse_do_getattr(inode);
445 err = generic_permission(inode, mask, NULL);
448 /* FIXME: Need some mechanism to revoke permissions:
449 currently if the filesystem suddenly changes the
450 file mode, we will not be informed about it, and
451 continue to allow access to the file/directory.
453 This is actually not so grave, since the user can
454 simply keep access to the file/directory anyway by
455 keeping it open... */
459 int mode = inode->i_mode;
460 if ((mask & MAY_WRITE) && IS_RDONLY(inode) &&
461 (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)))
463 if ((mask & MAY_EXEC) && !S_ISDIR(mode) && !(mode & S_IXUGO))
469 static int parse_dirfile(char *buf, size_t nbytes, struct file *file,
470 void *dstbuf, filldir_t filldir)
472 while (nbytes >= FUSE_NAME_OFFSET) {
473 struct fuse_dirent *dirent = (struct fuse_dirent *) buf;
474 size_t reclen = FUSE_DIRENT_SIZE(dirent);
476 if (!dirent->namelen || dirent->namelen > FUSE_NAME_MAX)
481 over = filldir(dstbuf, dirent->name, dirent->namelen,
482 file->f_pos, dirent->ino, dirent->type);
488 file->f_pos = dirent->off;
494 static int fuse_checkdir(struct file *cfile, struct file *file)
499 inode = cfile->f_dentry->d_inode;
500 if (!S_ISREG(inode->i_mode)) {
505 file->private_data = cfile;
509 static int fuse_getdir(struct file *file)
511 struct inode *inode = file->f_dentry->d_inode;
512 struct fuse_conn *fc = get_fuse_conn(inode);
513 struct fuse_req *req = fuse_get_request(fc);
514 struct fuse_getdir_out_i outarg;
518 return -ERESTARTNOINTR;
520 req->in.h.opcode = FUSE_GETDIR;
521 req->in.h.nodeid = get_node_id(inode);
523 req->out.numargs = 1;
524 req->out.args[0].size = sizeof(struct fuse_getdir_out);
525 req->out.args[0].value = &outarg;
526 request_send(fc, req);
527 err = req->out.h.error;
528 fuse_put_request(fc, req);
530 err = fuse_checkdir(outarg.file, file);
534 static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir)
536 struct file *cfile = file->private_data;
541 ret = fuse_getdir(file);
545 cfile = file->private_data;
548 buf = (char *) __get_free_page(GFP_KERNEL);
552 ret = kernel_read(cfile, file->f_pos, buf, PAGE_SIZE);
554 ret = parse_dirfile(buf, ret, file, dstbuf, filldir);
556 free_page((unsigned long) buf);
560 static char *read_link(struct dentry *dentry)
562 struct inode *inode = dentry->d_inode;
563 struct fuse_conn *fc = get_fuse_conn(inode);
564 struct fuse_req *req = fuse_get_request(fc);
568 return ERR_PTR(-ERESTARTNOINTR);
570 link = (char *) __get_free_page(GFP_KERNEL);
572 link = ERR_PTR(-ENOMEM);
575 req->in.h.opcode = FUSE_READLINK;
576 req->in.h.nodeid = get_node_id(inode);
579 req->out.numargs = 1;
580 req->out.args[0].size = PAGE_SIZE - 1;
581 req->out.args[0].value = link;
582 request_send(fc, req);
583 if (req->out.h.error) {
584 free_page((unsigned long) link);
585 link = ERR_PTR(req->out.h.error);
587 link[req->out.args[0].size] = '\0';
589 fuse_put_request(fc, req);
593 static void free_link(char *link)
596 free_page((unsigned long) link);
599 static void *fuse_follow_link(struct dentry *dentry, struct nameidata *nd)
601 nd_set_link(nd, read_link(dentry));
605 static void fuse_put_link(struct dentry *dentry, struct nameidata *nd, void *c)
607 free_link(nd_get_link(nd));
610 static int fuse_dir_open(struct inode *inode, struct file *file)
612 file->private_data = NULL;
616 static int fuse_dir_release(struct inode *inode, struct file *file)
618 struct file *cfile = file->private_data;
626 static unsigned iattr_to_fattr(struct iattr *iattr, struct fuse_attr *fattr)
628 unsigned ivalid = iattr->ia_valid;
631 memset(fattr, 0, sizeof(*fattr));
633 if (ivalid & ATTR_MODE)
634 fvalid |= FATTR_MODE, fattr->mode = iattr->ia_mode;
635 if (ivalid & ATTR_UID)
636 fvalid |= FATTR_UID, fattr->uid = iattr->ia_uid;
637 if (ivalid & ATTR_GID)
638 fvalid |= FATTR_GID, fattr->gid = iattr->ia_gid;
639 if (ivalid & ATTR_SIZE)
640 fvalid |= FATTR_SIZE, fattr->size = iattr->ia_size;
641 /* You can only _set_ these together (they may change by themselves) */
642 if ((ivalid & (ATTR_ATIME | ATTR_MTIME)) == (ATTR_ATIME | ATTR_MTIME)) {
643 fvalid |= FATTR_ATIME | FATTR_MTIME;
644 fattr->atime = iattr->ia_atime.tv_sec;
645 fattr->mtime = iattr->ia_mtime.tv_sec;
651 static int fuse_setattr(struct dentry *entry, struct iattr *attr)
653 struct inode *inode = entry->d_inode;
654 struct fuse_conn *fc = get_fuse_conn(inode);
655 struct fuse_inode *fi = get_fuse_inode(inode);
656 struct fuse_req *req;
657 struct fuse_setattr_in inarg;
658 struct fuse_attr_out outarg;
662 if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {
663 err = inode_change_ok(inode, attr);
668 if (attr->ia_valid & ATTR_SIZE) {
671 limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
672 if (limit != RLIM_INFINITY && attr->ia_size > (loff_t) limit) {
673 send_sig(SIGXFSZ, current, 0);
678 req = fuse_get_request(fc);
680 return -ERESTARTNOINTR;
682 memset(&inarg, 0, sizeof(inarg));
683 inarg.valid = iattr_to_fattr(attr, &inarg.attr);
684 req->in.h.opcode = FUSE_SETATTR;
685 req->in.h.nodeid = get_node_id(inode);
688 req->in.args[0].size = sizeof(inarg);
689 req->in.args[0].value = &inarg;
690 req->out.numargs = 1;
691 req->out.args[0].size = sizeof(outarg);
692 req->out.args[0].value = &outarg;
693 request_send(fc, req);
694 err = req->out.h.error;
695 fuse_put_request(fc, req);
697 if ((inode->i_mode ^ outarg.attr.mode) & S_IFMT) {
698 make_bad_inode(inode);
702 loff_t origsize = i_size_read(inode);
703 i_size_write(inode, outarg.attr.size);
704 if (origsize > outarg.attr.size)
705 vmtruncate(inode, outarg.attr.size);
707 fuse_change_attributes(inode, &outarg.attr);
708 fi->i_time = time_to_jiffies(outarg.attr_valid,
709 outarg.attr_valid_nsec);
711 } else if (err == -EINTR)
712 fuse_invalidate_attr(inode);
717 static int fuse_getattr(struct vfsmount *mnt, struct dentry *entry,
720 struct inode *inode = entry->d_inode;
721 int err = fuse_revalidate(entry);
723 generic_fillattr(inode, stat);
728 static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
729 struct nameidata *nd)
732 int err = fuse_lookup_iget(dir, entry, &inode);
735 if (inode && S_ISDIR(inode->i_mode)) {
736 /* Don't allow creating an alias to a directory */
737 struct dentry *alias = d_find_alias(inode);
738 if (alias && !(alias->d_flags & DCACHE_DISCONNECTED)) {
741 return ERR_PTR(-EIO);
744 return d_splice_alias(inode, entry);
747 static int fuse_setxattr(struct dentry *entry, const char *name,
748 const void *value, size_t size, int flags)
750 struct inode *inode = entry->d_inode;
751 struct fuse_conn *fc = get_fuse_conn(inode);
752 struct fuse_req *req;
753 struct fuse_setxattr_in inarg;
756 if (size > FUSE_XATTR_SIZE_MAX)
762 req = fuse_get_request(fc);
764 return -ERESTARTNOINTR;
766 memset(&inarg, 0, sizeof(inarg));
769 req->in.h.opcode = FUSE_SETXATTR;
770 req->in.h.nodeid = get_node_id(inode);
773 req->in.args[0].size = sizeof(inarg);
774 req->in.args[0].value = &inarg;
775 req->in.args[1].size = strlen(name) + 1;
776 req->in.args[1].value = name;
777 req->in.args[2].size = size;
778 req->in.args[2].value = value;
779 request_send(fc, req);
780 err = req->out.h.error;
781 fuse_put_request(fc, req);
782 if (err == -ENOSYS) {
789 static ssize_t fuse_getxattr(struct dentry *entry, const char *name,
790 void *value, size_t size)
792 struct inode *inode = entry->d_inode;
793 struct fuse_conn *fc = get_fuse_conn(inode);
794 struct fuse_req *req;
795 struct fuse_getxattr_in inarg;
796 struct fuse_getxattr_out outarg;
802 req = fuse_get_request(fc);
804 return -ERESTARTNOINTR;
806 memset(&inarg, 0, sizeof(inarg));
808 req->in.h.opcode = FUSE_GETXATTR;
809 req->in.h.nodeid = get_node_id(inode);
812 req->in.args[0].size = sizeof(inarg);
813 req->in.args[0].value = &inarg;
814 req->in.args[1].size = strlen(name) + 1;
815 req->in.args[1].value = name;
816 /* This is really two different operations rolled into one */
817 req->out.numargs = 1;
820 req->out.args[0].size = size;
821 req->out.args[0].value = value;
823 req->out.args[0].size = sizeof(outarg);
824 req->out.args[0].value = &outarg;
826 request_send(fc, req);
827 ret = req->out.h.error;
829 ret = size ? req->out.args[0].size : outarg.size;
831 if (ret == -ENOSYS) {
836 fuse_put_request(fc, req);
840 static ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size)
842 struct inode *inode = entry->d_inode;
843 struct fuse_conn *fc = get_fuse_conn(inode);
844 struct fuse_req *req;
845 struct fuse_getxattr_in inarg;
846 struct fuse_getxattr_out outarg;
849 if (fc->no_listxattr)
852 req = fuse_get_request(fc);
854 return -ERESTARTNOINTR;
856 memset(&inarg, 0, sizeof(inarg));
858 req->in.h.opcode = FUSE_LISTXATTR;
859 req->in.h.nodeid = get_node_id(inode);
862 req->in.args[0].size = sizeof(inarg);
863 req->in.args[0].value = &inarg;
864 /* This is really two different operations rolled into one */
865 req->out.numargs = 1;
868 req->out.args[0].size = size;
869 req->out.args[0].value = list;
871 req->out.args[0].size = sizeof(outarg);
872 req->out.args[0].value = &outarg;
874 request_send(fc, req);
875 ret = req->out.h.error;
877 ret = size ? req->out.args[0].size : outarg.size;
879 if (ret == -ENOSYS) {
880 fc->no_listxattr = 1;
884 fuse_put_request(fc, req);
888 static int fuse_removexattr(struct dentry *entry, const char *name)
890 struct inode *inode = entry->d_inode;
891 struct fuse_conn *fc = get_fuse_conn(inode);
892 struct fuse_req *req;
895 if (fc->no_removexattr)
898 req = fuse_get_request(fc);
900 return -ERESTARTNOINTR;
902 req->in.h.opcode = FUSE_REMOVEXATTR;
903 req->in.h.nodeid = get_node_id(inode);
906 req->in.args[0].size = strlen(name) + 1;
907 req->in.args[0].value = name;
908 request_send(fc, req);
909 err = req->out.h.error;
910 fuse_put_request(fc, req);
911 if (err == -ENOSYS) {
912 fc->no_removexattr = 1;
918 static struct inode_operations fuse_dir_inode_operations = {
919 .lookup = fuse_lookup,
921 .symlink = fuse_symlink,
922 .unlink = fuse_unlink,
924 .rename = fuse_rename,
926 .setattr = fuse_setattr,
927 .create = fuse_create,
929 .permission = fuse_permission,
930 .getattr = fuse_getattr,
931 .setxattr = fuse_setxattr,
932 .getxattr = fuse_getxattr,
933 .listxattr = fuse_listxattr,
934 .removexattr = fuse_removexattr,
937 static struct file_operations fuse_dir_operations = {
938 .llseek = generic_file_llseek,
939 .read = generic_read_dir,
940 .readdir = fuse_readdir,
941 .open = fuse_dir_open,
942 .release = fuse_dir_release,
945 static struct inode_operations fuse_common_inode_operations = {
946 .setattr = fuse_setattr,
947 .permission = fuse_permission,
948 .getattr = fuse_getattr,
949 .setxattr = fuse_setxattr,
950 .getxattr = fuse_getxattr,
951 .listxattr = fuse_listxattr,
952 .removexattr = fuse_removexattr,
955 static struct inode_operations fuse_symlink_inode_operations = {
956 .setattr = fuse_setattr,
957 .follow_link = fuse_follow_link,
958 .put_link = fuse_put_link,
959 .readlink = generic_readlink,
960 .getattr = fuse_getattr,
961 .setxattr = fuse_setxattr,
962 .getxattr = fuse_getxattr,
963 .listxattr = fuse_listxattr,
964 .removexattr = fuse_removexattr,
967 void fuse_init_common(struct inode *inode)
969 inode->i_op = &fuse_common_inode_operations;
972 void fuse_init_dir(struct inode *inode)
974 inode->i_op = &fuse_dir_inode_operations;
975 inode->i_fop = &fuse_dir_operations;
978 void fuse_init_symlink(struct inode *inode)
980 inode->i_op = &fuse_symlink_inode_operations;