Changeset 610 for trunk/kernel/syscalls/sys_open.c

Timestamp:

Dec 27, 2018, 7:38:58 PM (5 years ago)

Author:

alain

Message:

Fix several bugs in VFS to support the following
ksh commandis : cp, mv, rm, mkdir, cd, pwd

File:

• trunk/kernel/syscalls/sys_open.c (modified) (2 diffs)

trunk/kernel/syscalls/sys_open.c

@@ -40 +40 @@
 {
     error_t        error;
-    xptr_t         file_xp;                          // extended pointer on vfs_file_t
-    uint32_t       file_id;                          // file descriptor index
+    xptr_t         file_xp;                 // extended pointer on vfs_file_t
+    uint32_t       file_id;                 // file descriptor index
+    xptr_t         root_inode_xp;           // extended pointer on path root inode
+
     char           kbuf[CONFIG_VFS_MAX_PATH_LENGTH];
 
@@ -88 +90 @@
     cxy_t       ref_cxy = GET_CXY( ref_xp );
 
-    // get the cwd lock in read mode from reference process
-    remote_rwlock_rd_acquire( XPTR( ref_cxy , &ref_ptr->cwd_lock ) );
+    // compute root inode for path 
+    if( kbuf[0] == '/' )                        // absolute path
+    {
+        // use extended pointer on VFS root inode
+        root_inode_xp = process->vfs_root_xp;
+    }
+    else                                        // relative path
+    {
+        // use extended pointer on CWD inode
+        root_inode_xp = hal_remote_l64( XPTR( ref_cxy , &ref_ptr->cwd_xp ) );
+    }
 
     // call the relevant VFS function
-    error = vfs_open( process,
+    error = vfs_open( root_inode_xp,
                       kbuf,
+                      ref_xp,
                       flags,
                       mode,
                       &file_xp,
                       &file_id );
-
-    // release the cwd lock
-    remote_rwlock_rd_release( XPTR( ref_cxy , &ref_ptr->cwd_lock ) );
 
     if( error )