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btrfs: implemented btrfs_unlink

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Change-Id: I3ccb6be54ba3e42136fa7093f35e16aaecc5a540
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1589
Reviewed-by: Chế Vũ Gia Hy <cvghy116@gmail.com>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
This commit is contained in:
brjhaiku 2019-07-11 04:10:35 +05:30 committed by Adrien Destugues
parent 4ffbc73faf
commit 9a84f57b3f
1 changed files with 46 additions and 1 deletions
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47
src/add-ons/kernel/file_systems/btrfs/kernel_interface.cpp
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@ -483,6 +483,51 @@ btrfs_read_link(fs_volume* _volume, fs_vnode* _node, char* buffer,
}
status_t
btrfs_unlink(fs_volume* _volume, fs_vnode* _directory, const char* name)
{
if (!strcmp(name, "..") || !strcmp(name, "."))
return B_NOT_ALLOWED;
Volume* volume = (Volume*)_volume->private_volume;
Inode* directory = (Inode*)_directory->private_node;
status_t status = directory->CheckPermissions(W_OK);
if (status < B_OK)
return status;
Transaction transaction(volume);
BTree::Path path(volume->FSTree());
ino_t id;
status = DirectoryIterator(directory).Lookup(name, strlen(name), &id);
if (status != B_OK)
return status;
Inode inode(volume, id);
status = inode.InitCheck();
if (status != B_OK)
return status;
status = inode.Remove(transaction, &path);
if (status != B_OK)
return status;
status = inode.Dereference(transaction, &path, directory->ID(), name);
if (status != B_OK)
return status;
entry_cache_remove(volume->ID(), directory->ID(), name);
status = transaction.Done();
if (status == B_OK)
notify_entry_removed(volume->ID(), directory->ID(), name, id);
else
entry_cache_add(volume->ID(), directory->ID(), name, id);
return status;
}
// #pragma mark - Directory functions
@ -973,7 +1018,7 @@ fs_vnode_ops gBtrfsVnodeOps = {
NULL, // fs_create_symlink,
NULL, // fs_link,
NULL, // fs_unlink,
&btrfs_unlink,
NULL, // fs_rename,
&btrfs_access,