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Implemented link() hook.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37582 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2010-07-19 10:49:29 +00:00
parent ae3bba85bb
commit 470934be8c
1 changed files with 52 additions and 2 deletions
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54
src/tests/system/kernel/file_corruption/fs/checksumfs.cpp
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@ -576,6 +576,56 @@ checksumfs_create_symlink(fs_volume* fsVolume, fs_vnode* parent,
}
static status_t
checksumfs_link(fs_volume* fsVolume, fs_vnode* dir, const char* name,
fs_vnode* vnode)
{
Volume* volume = (Volume*)fsVolume->private_volume;
Node* node = (Node*)vnode->private_node;
Directory* directory = dynamic_cast<Directory*>((Node*)dir->private_node);
if (directory == NULL)
return B_NOT_A_DIRECTORY;
if (volume->IsReadOnly())
return B_READ_ONLY_DEVICE;
// don't allow hardlinking directories
if (S_ISDIR(node->Mode()))
RETURN_ERROR(B_NOT_ALLOWED);
// start a transaction and lock the nodes
Transaction transaction(volume);
status_t error = transaction.Start();
if (error != B_OK)
RETURN_ERROR(error);
error = transaction.AddNodes(directory, node);
if (error != B_OK)
RETURN_ERROR(error);
// check permissions
error = check_access(directory, W_OK);
if (error != B_OK)
RETURN_ERROR(error);
// don't create an entry in an unlinked directory
if (directory->HardLinks() == 0)
RETURN_ERROR(B_ENTRY_NOT_FOUND);
// insert the new entry
error = directory->InsertEntry(name, node->BlockIndex(), transaction);
if (error != B_OK)
RETURN_ERROR(error);
// update stat data
node->SetHardLinks(node->HardLinks() + 1);
directory->Touched(NODE_MODIFIED);
// commit the transaction
return transaction.Commit();
}
static status_t
checksumfs_unlink(fs_volume* fsVolume, fs_vnode* dir, const char* name)
{
@ -595,7 +645,7 @@ checksumfs_rename(fs_volume* fsVolume, fs_vnode* fromDir, const char* fromName,
if (fromDirectory == NULL || toDirectory == NULL)
return B_NOT_A_DIRECTORY;
if (volume->IsReadOnly())
if (volume->IsReadOnly())
return B_READ_ONLY_DEVICE;
// We need to write-lock all three nodes (both directories and the moved
@ -1479,7 +1529,7 @@ fs_vnode_ops gCheckSumFSVnodeOps = {
checksumfs_read_symlink,
checksumfs_create_symlink,
NULL, // checksumfs_link,
checksumfs_link,
checksumfs_unlink,
checksumfs_rename,