diff options
Diffstat (limited to 'fs/fuse/dir.c')
| -rw-r--r-- | fs/fuse/dir.c | 90 |
1 files changed, 66 insertions, 24 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 8b8eebc5614..e703654e7f4 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -362,19 +362,6 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry, } /* - * Synchronous release for the case when something goes wrong in CREATE_OPEN - */ -static void fuse_sync_release(struct fuse_conn *fc, struct fuse_file *ff, - u64 nodeid, int flags) -{ - fuse_release_fill(ff, nodeid, flags, FUSE_RELEASE); - ff->reserved_req->force = 1; - fuse_request_send(fc, ff->reserved_req); - fuse_put_request(fc, ff->reserved_req); - kfree(ff); -} - -/* * Atomic create+open operation * * If the filesystem doesn't support this, then fall back to separate @@ -388,7 +375,7 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode, struct fuse_conn *fc = get_fuse_conn(dir); struct fuse_req *req; struct fuse_req *forget_req; - struct fuse_open_in inarg; + struct fuse_create_in inarg; struct fuse_open_out outopen; struct fuse_entry_out outentry; struct fuse_file *ff; @@ -412,15 +399,20 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode, if (!ff) goto out_put_request; + if (!fc->dont_mask) + mode &= ~current_umask(); + flags &= ~O_NOCTTY; memset(&inarg, 0, sizeof(inarg)); memset(&outentry, 0, sizeof(outentry)); inarg.flags = flags; inarg.mode = mode; + inarg.umask = current_umask(); req->in.h.opcode = FUSE_CREATE; req->in.h.nodeid = get_node_id(dir); req->in.numargs = 2; - req->in.args[0].size = sizeof(inarg); + req->in.args[0].size = fc->minor < 12 ? sizeof(struct fuse_open_in) : + sizeof(inarg); req->in.args[0].value = &inarg; req->in.args[1].size = entry->d_name.len + 1; req->in.args[1].value = entry->d_name.name; @@ -445,12 +437,14 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode, goto out_free_ff; fuse_put_request(fc, req); + ff->fh = outopen.fh; + ff->nodeid = outentry.nodeid; + ff->open_flags = outopen.open_flags; inode = fuse_iget(dir->i_sb, outentry.nodeid, outentry.generation, &outentry.attr, entry_attr_timeout(&outentry), 0); if (!inode) { flags &= ~(O_CREAT | O_EXCL | O_TRUNC); - ff->fh = outopen.fh; - fuse_sync_release(fc, ff, outentry.nodeid, flags); + fuse_sync_release(ff, flags); fuse_send_forget(fc, forget_req, outentry.nodeid, 1); return -ENOMEM; } @@ -460,11 +454,11 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, int mode, fuse_invalidate_attr(dir); file = lookup_instantiate_filp(nd, entry, generic_file_open); if (IS_ERR(file)) { - ff->fh = outopen.fh; - fuse_sync_release(fc, ff, outentry.nodeid, flags); + fuse_sync_release(ff, flags); return PTR_ERR(file); } - fuse_finish_open(inode, file, ff, &outopen); + file->private_data = fuse_file_get(ff); + fuse_finish_open(inode, file); return 0; out_free_ff: @@ -557,12 +551,17 @@ static int fuse_mknod(struct inode *dir, struct dentry *entry, int mode, if (IS_ERR(req)) return PTR_ERR(req); + if (!fc->dont_mask) + mode &= ~current_umask(); + memset(&inarg, 0, sizeof(inarg)); inarg.mode = mode; inarg.rdev = new_encode_dev(rdev); + inarg.umask = current_umask(); req->in.h.opcode = FUSE_MKNOD; req->in.numargs = 2; - req->in.args[0].size = sizeof(inarg); + req->in.args[0].size = fc->minor < 12 ? FUSE_COMPAT_MKNOD_IN_SIZE : + sizeof(inarg); req->in.args[0].value = &inarg; req->in.args[1].size = entry->d_name.len + 1; req->in.args[1].value = entry->d_name.name; @@ -589,8 +588,12 @@ static int fuse_mkdir(struct inode *dir, struct dentry *entry, int mode) if (IS_ERR(req)) return PTR_ERR(req); + if (!fc->dont_mask) + mode &= ~current_umask(); + memset(&inarg, 0, sizeof(inarg)); inarg.mode = mode; + inarg.umask = current_umask(); req->in.h.opcode = FUSE_MKDIR; req->in.numargs = 2; req->in.args[0].size = sizeof(inarg); @@ -856,6 +859,43 @@ int fuse_update_attributes(struct inode *inode, struct kstat *stat, return err; } +int fuse_reverse_inval_entry(struct super_block *sb, u64 parent_nodeid, + struct qstr *name) +{ + int err = -ENOTDIR; + struct inode *parent; + struct dentry *dir; + struct dentry *entry; + + parent = ilookup5(sb, parent_nodeid, fuse_inode_eq, &parent_nodeid); + if (!parent) + return -ENOENT; + + mutex_lock(&parent->i_mutex); + if (!S_ISDIR(parent->i_mode)) + goto unlock; + + err = -ENOENT; + dir = d_find_alias(parent); + if (!dir) + goto unlock; + + entry = d_lookup(dir, name); + dput(dir); + if (!entry) + goto unlock; + + fuse_invalidate_attr(parent); + fuse_invalidate_entry(entry); + dput(entry); + err = 0; + + unlock: + mutex_unlock(&parent->i_mutex); + iput(parent); + return err; +} + /* * Calling into a user-controlled filesystem gives the filesystem * daemon ptrace-like capabilities over the requester process. This @@ -1035,7 +1075,7 @@ static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir) req->out.argpages = 1; req->num_pages = 1; req->pages[0] = page; - fuse_read_fill(req, file, inode, file->f_pos, PAGE_SIZE, FUSE_READDIR); + fuse_read_fill(req, file, file->f_pos, PAGE_SIZE, FUSE_READDIR); fuse_request_send(fc, req); nbytes = req->out.args[0].size; err = req->out.h.error; @@ -1101,12 +1141,14 @@ static void fuse_put_link(struct dentry *dentry, struct nameidata *nd, void *c) static int fuse_dir_open(struct inode *inode, struct file *file) { - return fuse_open_common(inode, file, 1); + return fuse_open_common(inode, file, true); } static int fuse_dir_release(struct inode *inode, struct file *file) { - return fuse_release_common(inode, file, 1); + fuse_release_common(file, FUSE_RELEASEDIR); + + return 0; } static int fuse_dir_fsync(struct file *file, struct dentry *de, int datasync) |