Changeset 37e7dc54 in mainline for uspace/srv/fs/fat/fat.c

Timestamp:

2007-09-27T15:27:53Z (17 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

6c117bb

Parents:

bcf23cf

Message:

VFS work.
Modify the protocol so that VFS and FAT (or any other FS) have to share the Path
Lookup Buffer in read-only mode.

File:

• uspace/srv/fs/fat/fat.c (modified) (3 diffs)

uspace/srv/fs/fat/fat.c

@@ -43 +43 @@
 #include <unistd.h>
 #include <stdio.h>
+#include <as.h>>
 #include "../../vfs/vfs.h"
 
@@ -62 +63 @@
         }
 };
+
+uint8_t *plb_ro = NULL;
 
 /**
@@ -142 +145 @@
 
         /*
+         * Allocate piece of address space for PLB.
+         */
+        plb_ro = as_get_mappable_page(PLB_SIZE);
+        if (!plb_ro) {
+                async_wait_for(req, NULL);
+                return ENOMEM;
+        }
+
+        /*
+         * Request sharing the Path Lookup Buffer with VFS.
+         */
+        rc = ipc_call_sync_3(vfs_phone, IPC_M_AS_AREA_RECV, plb_ro, PLB_SIZE, 0,
+            NULL, NULL, NULL);
+        if (rc) {
+                async_wait_for(req, NULL);
+                return rc;
+        }
+         
+        /*
          * Create a connection fibril to handle the callback connection.
          */