Changeset 54caa41b in mainline for uspace/srv/fs/minixfs/mfs_ops.c

Timestamp:

2011-03-24T21:30:52Z (14 years ago)

Author:

Maurizio Lombardi <m.lombardi85@…>

Branches:

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

Children:

41202a9

Parents:

cfbcd86

Message:

Link mfs_has_children() function to the libfs_ops structure

File:

• uspace/srv/fs/minixfs/mfs_ops.c (modified) (2 diffs)

uspace/srv/fs/minixfs/mfs_ops.c

@@ -54 +54 @@
         .is_file = mfs_is_file,
         .node_get = mfs_node_get,
-        .plb_get_char = mfs_plb_get_char
+        .plb_get_char = mfs_plb_get_char,
+        .has_children = mfs_has_children
 };
 
@@ -312 +313 @@
 }
 
+void mfs_lookup(ipc_callid_t rid, ipc_call_t *request)
+{
+        libfs_lookup(&mfs_libfs_ops, mfs_reg.fs_handle, rid, request);
+}
+
 char mfs_plb_get_char(unsigned pos)
 {
         return mfs_reg.plb_ro[pos % PLB_SIZE];
+}
+
+int mfs_has_children(bool *has_children, fs_node_t *fsnode)
+{
+        struct mfs_node *mnode = fsnode->data;
+        const struct mfs_ino_info *ino_i = mnode->ino_i;
+        const struct mfs_instance *inst = mnode->instance;
+        const struct mfs_sb_info *sbi = inst->sbi;
+        int i;
+
+        *has_children = false;
+
+        if (!S_ISDIR(mnode->ino_i->i_mode))
+                goto out;
+
+        struct mfs_dentry_info *d_info;
+
+        for (i = 2; i < ino_i->i_size / sbi->dirsize; ++i) {
+                d_info = read_directory_entry(mnode, i);
+
+                if (!d_info)
+                        goto out;
+
+                if (d_info->d_inum) {
+                        *has_children = true;
+                        free(d_info);
+                        break;
+                }
+
+                free(d_info);
+        }
+
+        if (*has_children)
+                mfsdebug("Has children\n");
+        else
+                mfsdebug("Has not children\n");
+
+out:
+        return EOK;
 }