diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/fuse/dir.c | 35 | ||||
| -rw-r--r-- | fs/fuse/fuse_i.h | 3 |
2 files changed, 38 insertions, 0 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 61b58fdd973e..4bc1afcc476d 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -461,6 +461,38 @@ static int fuse_revalidate(struct dentry *entry) return fuse_do_getattr(inode); } +static int fuse_access(struct inode *inode, int mask) +{ + struct fuse_conn *fc = get_fuse_conn(inode); + struct fuse_req *req; + struct fuse_access_in inarg; + int err; + + if (fc->no_access) + return 0; + + req = fuse_get_request(fc); + if (!req) + return -EINTR; + + memset(&inarg, 0, sizeof(inarg)); + inarg.mask = mask; + req->in.h.opcode = FUSE_ACCESS; + req->in.h.nodeid = get_node_id(inode); + req->inode = inode; + req->in.numargs = 1; + req->in.args[0].size = sizeof(inarg); + req->in.args[0].value = &inarg; + request_send(fc, req); + err = req->out.h.error; + fuse_put_request(fc, req); + if (err == -ENOSYS) { + fc->no_access = 1; + err = 0; + } + return err; +} + static int fuse_permission(struct inode *inode, int mask, struct nameidata *nd) { struct fuse_conn *fc = get_fuse_conn(inode); @@ -493,6 +525,9 @@ static int fuse_permission(struct inode *inode, int mask, struct nameidata *nd) int mode = inode->i_mode; if ((mask & MAY_EXEC) && !S_ISDIR(mode) && !(mode & S_IXUGO)) return -EACCES; + + if (nd && (nd->flags & LOOKUP_ACCESS)) + return fuse_access(inode, mask); return 0; } } diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 5cb456f572c1..c4e8c3b47982 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -266,6 +266,9 @@ struct fuse_conn { /** Is removexattr not implemented by fs? */ unsigned no_removexattr : 1; + /** Is access not implemented by fs? */ + unsigned no_access : 1; + /** Backing dev info */ struct backing_dev_info bdi; }; |