1 files changed, 31 insertions, 30 deletions

diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 29fef75f2360..9ee2a6bbfa37 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -663,7 +663,7 @@ static int fuse_link(struct dentry *entry, struct inode *newdir,
         return err;
 }
 
-int fuse_do_getattr(struct inode *inode)
+static int fuse_do_getattr(struct inode *inode)
 {
         int err;
         struct fuse_attr_out arg;
@@ -723,30 +723,6 @@ static int fuse_allow_task(struct fuse_conn *fc, struct task_struct *task)
         return 0;
 }
 
-/*
- * Check whether the inode attributes are still valid
- *
- * If the attribute validity timeout has expired, then fetch the fresh
- * attributes with a 'getattr' request
- *
- * I'm not sure why cached attributes are never returned for the root
- * inode, this is probably being too cautious.
- */
-static int fuse_revalidate(struct dentry *entry)
-{
-        struct inode *inode = entry->d_inode;
-        struct fuse_inode *fi = get_fuse_inode(inode);
-        struct fuse_conn *fc = get_fuse_conn(inode);
-
-        if (!fuse_allow_task(fc, current))
-                return -EACCES;
-        if (get_node_id(inode) != FUSE_ROOT_ID &&
-            fi->i_time >= get_jiffies_64())
-                return 0;
-
-        return fuse_do_getattr(inode);
-}
-
 static int fuse_access(struct inode *inode, int mask)
 {
         struct fuse_conn *fc = get_fuse_conn(inode);
@@ -794,16 +770,33 @@ static int fuse_access(struct inode *inode, int mask)
 static int fuse_permission(struct inode *inode, int mask, struct nameidata *nd)
 {
         struct fuse_conn *fc = get_fuse_conn(inode);
+        struct fuse_inode *fi = get_fuse_inode(inode);
+        bool refreshed = false;
+        int err = 0;
 
         if (!fuse_allow_task(fc, current))
                 return -EACCES;
-        else if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {
+
+        /*
+         * If attributes are needed, but are stale, refresh them
+         * before proceeding
+         */
+        if (((fc->flags & FUSE_DEFAULT_PERMISSIONS) || (mask & MAY_EXEC)) &&
+            fi->i_time < get_jiffies_64()) {
+                err = fuse_do_getattr(inode);
+                if (err)
+                        return err;
+
+                refreshed = true;
+        }
+
+        if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {
                 int err = generic_permission(inode, mask, NULL);
 
                 /* If permission is denied, try to refresh file
                    attributes.  This is also needed, because the root
                    node will at first have no permissions */
-                if (err == -EACCES) {
+                if (err == -EACCES && !refreshed) {
                         err = fuse_do_getattr(inode);
                         if (!err)
                                 err = generic_permission(inode, mask, NULL);
@@ -814,7 +807,6 @@ static int fuse_permission(struct inode *inode, int mask, struct nameidata *nd)
                    noticed immediately, only after the attribute
                    timeout has expired */
 
-                return err;
         } else {
                 int mode = inode->i_mode;
                 if ((mask & MAY_EXEC) && !S_ISDIR(mode) && !(mode & S_IXUGO))
@@ -822,8 +814,8 @@ static int fuse_permission(struct inode *inode, int mask, struct nameidata *nd)
 
                 if (nd && (nd->flags & (LOOKUP_ACCESS | LOOKUP_CHDIR)))
                         return fuse_access(inode, mask);
-                return 0;
         }
+        return err;
 }
 
 static int parse_dirfile(char *buf, size_t nbytes, struct file *file,
@@ -1052,7 +1044,16 @@ static int fuse_getattr(struct vfsmount *mnt, struct dentry *entry,
                         struct kstat *stat)
 {
         struct inode *inode = entry->d_inode;
-        int err = fuse_revalidate(entry);
+        struct fuse_inode *fi = get_fuse_inode(inode);
+        struct fuse_conn *fc = get_fuse_conn(inode);
+        int err = 0;
+
+        if (!fuse_allow_task(fc, current))
+                return -EACCES;
+
+        if (fi->i_time < get_jiffies_64())
+                err = fuse_do_getattr(inode);
+
         if (!err)
                 generic_fillattr(inode, stat);