Changeset 5ab597d in mainline for uspace/srv/fs

Timestamp:

2008-08-22T19:44:52Z (17 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

be8f92d

Parents:

2e4bd1f

Message:

Add reference to the mounted FS root.

This makes it possible to keep the FS root logically unlinked (i.e. lnkcnt == 0)
because it prevents VFS from attempting to destroy it during closedir().

Location:

uspace/srv/fs

Files:

• fat/fat_ops.c (modified) (2 diffs)
• tmpfs/tmpfs_ops.c (modified) (2 diffs)

uspace/srv/fs/fat/fat_ops.c

@@ -738 +738 @@
         rootp->firstc = FAT_CLST_ROOT;
         rootp->refcnt = 1;
+        rootp->lnkcnt = 0;      /* FS root is not linked */
         rootp->size = rde * sizeof(fat_dentry_t);
         rootp->idx = ridxp;
@@ -744 +745 @@
         futex_up(&ridxp->lock);
 
-        ipc_answer_0(rid, EOK);
+        ipc_answer_3(rid, EOK, ridxp->index, rootp->size, rootp->lnkcnt);
 }
 

uspace/srv/fs/tmpfs/tmpfs_ops.c

@@ -234 +234 @@
                 return false;
         }
-        root->lnkcnt = 1;
+        root->lnkcnt = 0;       /* FS root is not linked */
         return true;
 }
@@ -406 +406 @@
         if (dev_handle >= 0) {
                 if (tmpfs_restore(dev_handle))
-                        ipc_answer_0(rid, EOK);
+                        ipc_answer_3(rid, EOK, root->index, root->size,
+                            root->lnkcnt);
                 else
                         ipc_answer_0(rid, ELIMIT);
         } else {
-                        ipc_answer_0(rid, EOK);
+                ipc_answer_3(rid, EOK, root->index, root->size, root->lnkcnt);
         }
 }