diff options
Diffstat (limited to 'fs/fuse/dir.c')
-rw-r--r-- | fs/fuse/dir.c | 55 |
1 files changed, 43 insertions, 12 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index d19cbf34c634..4a6df591add6 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -391,6 +391,10 @@ int fuse_lookup_name(struct super_block *sb, u64 nodeid, const struct qstr *name err = -EIO; if (fuse_invalid_attr(&outarg->attr)) goto out_put_forget; + if (outarg->nodeid == FUSE_ROOT_ID && outarg->generation != 0) { + pr_warn_once("root generation should be zero\n"); + outarg->generation = 0; + } *inode = fuse_iget(sb, outarg->nodeid, outarg->generation, &outarg->attr, ATTR_TIMEOUT(outarg), @@ -615,7 +619,7 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, FUSE_ARGS(args); struct fuse_forget_link *forget; struct fuse_create_in inarg; - struct fuse_open_out outopen; + struct fuse_open_out *outopenp; struct fuse_entry_out outentry; struct fuse_inode *fi; struct fuse_file *ff; @@ -630,7 +634,7 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, goto out_err; err = -ENOMEM; - ff = fuse_file_alloc(fm); + ff = fuse_file_alloc(fm, true); if (!ff) goto out_put_forget_req; @@ -659,8 +663,10 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, args.out_numargs = 2; args.out_args[0].size = sizeof(outentry); args.out_args[0].value = &outentry; - args.out_args[1].size = sizeof(outopen); - args.out_args[1].value = &outopen; + /* Store outarg for fuse_finish_open() */ + outopenp = &ff->args->open_outarg; + args.out_args[1].size = sizeof(*outopenp); + args.out_args[1].value = outopenp; err = get_create_ext(&args, dir, entry, mode); if (err) @@ -676,9 +682,9 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, fuse_invalid_attr(&outentry.attr)) goto out_free_ff; - ff->fh = outopen.fh; + ff->fh = outopenp->fh; ff->nodeid = outentry.nodeid; - ff->open_flags = outopen.open_flags; + ff->open_flags = outopenp->open_flags; inode = fuse_iget(dir->i_sb, outentry.nodeid, outentry.generation, &outentry.attr, ATTR_TIMEOUT(&outentry), 0); if (!inode) { @@ -692,13 +698,15 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry, d_instantiate(entry, inode); fuse_change_entry_timeout(entry, &outentry); fuse_dir_changed(dir); - err = finish_open(file, entry, generic_file_open); + err = generic_file_open(inode, file); + if (!err) { + file->private_data = ff; + err = finish_open(file, entry, fuse_finish_open); + } if (err) { fi = get_fuse_inode(inode); fuse_sync_release(fi, ff, flags); } else { - file->private_data = ff; - fuse_finish_open(inode, file); if (fm->fc->atomic_o_trunc && trunc) truncate_pagecache(inode, 0); else if (!(ff->open_flags & FOPEN_KEEP_CACHE)) @@ -1210,7 +1218,7 @@ static int fuse_do_statx(struct inode *inode, struct file *file, if (((sx->mask & STATX_SIZE) && !fuse_valid_size(sx->size)) || ((sx->mask & STATX_TYPE) && (!fuse_valid_type(sx->mode) || inode_wrong_type(inode, sx->mode)))) { - make_bad_inode(inode); + fuse_make_bad(inode); return -EIO; } @@ -1485,7 +1493,7 @@ static int fuse_perm_getattr(struct inode *inode, int mask) * * 1) Local access checking ('default_permissions' mount option) based * on file mode. This is the plain old disk filesystem permission - * modell. + * model. * * 2) "Remote" access checking, where server is responsible for * checking permission in each inode operation. An exception to this @@ -1630,7 +1638,30 @@ out_err: static int fuse_dir_open(struct inode *inode, struct file *file) { - return fuse_open_common(inode, file, true); + struct fuse_mount *fm = get_fuse_mount(inode); + int err; + + if (fuse_is_bad(inode)) + return -EIO; + + err = generic_file_open(inode, file); + if (err) + return err; + + err = fuse_do_open(fm, get_node_id(inode), file, true); + if (!err) { + struct fuse_file *ff = file->private_data; + + /* + * Keep handling FOPEN_STREAM and FOPEN_NONSEEKABLE for + * directories for backward compatibility, though it's unlikely + * to be useful. + */ + if (ff->open_flags & (FOPEN_STREAM | FOPEN_NONSEEKABLE)) + nonseekable_open(inode, file); + } + + return err; } static int fuse_dir_release(struct inode *inode, struct file *file) |