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From: David Howells <dhowells@redhat.com>
To: viro@zeniv.linux.org.uk
Cc: dhowells@redhat.com, linux-afs@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 19/25] afs: Get the target vnode in afs_rmdir() and get a callback on it [ver #2]
Date: Wed, 24 Oct 2018 01:00:04 +0100	[thread overview]
Message-ID: <154033920486.12041.3074181015353053447.stgit@warthog.procyon.org.uk> (raw)
In-Reply-To: <154033906284.12041.12908874734066278152.stgit@warthog.procyon.org.uk>

Get the target vnode in afs_rmdir() and validate it before we attempt the
deletion, The vnode pointer will be passed through to the delivery function
in a later patch so that the delivery function can mark it deleted.

Signed-off-by: David Howells <dhowells@redhat.com>
---

 fs/afs/dir.c |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 8936731c59ff..f2dd48d4363f 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -1174,7 +1174,7 @@ static void afs_dir_remove_subdir(struct dentry *dentry)
 static int afs_rmdir(struct inode *dir, struct dentry *dentry)
 {
 	struct afs_fs_cursor fc;
-	struct afs_vnode *dvnode = AFS_FS_I(dir);
+	struct afs_vnode *dvnode = AFS_FS_I(dir), *vnode = NULL;
 	struct key *key;
 	u64 data_version = dvnode->status.data_version;
 	int ret;
@@ -1188,6 +1188,14 @@ static int afs_rmdir(struct inode *dir, struct dentry *dentry)
 		goto error;
 	}
 
+	/* Try to make sure we have a callback promise on the victim. */
+	if (d_really_is_positive(dentry)) {
+		vnode = AFS_FS_I(d_inode(dentry));
+		ret = afs_validate(vnode, key);
+		if (ret < 0)
+			goto error_key;
+	}
+
 	ret = -ERESTARTSYS;
 	if (afs_begin_vnode_operation(&fc, dvnode, key)) {
 		while (afs_select_fileserver(&fc)) {
@@ -1206,6 +1214,7 @@ static int afs_rmdir(struct inode *dir, struct dentry *dentry)
 		}
 	}
 
+error_key:
 	key_put(key);
 error:
 	return ret;


  parent reply	other threads:[~2018-10-24  3:38 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-23 23:57 [PATCH 00/25] AFS development [ver #2] David Howells
2018-10-23 23:57 ` [PATCH 01/25] amd-gpu: Don't undefine READ and WRITE " David Howells
2018-11-01 22:06   ` Pavel Machek
2018-10-23 23:57 ` [PATCH 02/25] iov_iter: Use accessor function " David Howells
2018-11-28  1:39   ` NeilBrown
2018-10-23 23:58 ` [PATCH 03/25] iov_iter: Separate type from direction and use accessor functions " David Howells
2018-10-23 23:58 ` [PATCH 04/25] iov_iter: Add I/O discard iterator " David Howells
2018-10-23 23:58 ` [PATCH 05/25] afs: Better tracing of protocol errors " David Howells
2018-10-23 23:58 ` [PATCH 06/25] afs: Set up the iov_iter before calling afs_extract_data() " David Howells
2018-10-23 23:58 ` [PATCH 07/25] afs: Improve FS server rotation error handling " David Howells
2018-10-23 23:58 ` [PATCH 08/25] afs: Implement VL server rotation " David Howells
2018-10-23 23:58 ` [PATCH 09/25] afs: Fix TTL on VL server and address lists " David Howells
2018-10-23 23:59 ` [PATCH 10/25] afs: Handle EIO from delivery function " David Howells
2018-10-23 23:59 ` [PATCH 11/25] afs: Add a couple of tracepoints to log I/O errors " David Howells
2018-10-23 23:59 ` [PATCH 12/25] afs: Don't invoke the server to read data beyond EOF " David Howells
2018-10-23 23:59 ` [PATCH 13/25] afs: Increase to 64-bit volume ID and 96-bit vnode ID for YFS " David Howells
2018-10-23 23:59 ` [PATCH 14/25] afs: Commit the status on a new file/dir/symlink " David Howells
2018-10-23 23:59 ` [PATCH 15/25] afs: Remove callback details from afs_callback_break struct " David Howells
2018-10-23 23:59 ` [PATCH 16/25] afs: Implement the YFS cache manager service " David Howells
2018-10-23 23:59 ` [PATCH 17/25] afs: Fix FS.FetchStatus delivery from updating wrong vnode " David Howells
2018-10-23 23:59 ` [PATCH 18/25] afs: Calc callback expiry in op reply delivery " David Howells
2018-10-24  0:00 ` David Howells [this message]
2018-10-24  0:00 ` [PATCH 20/25] afs: Expand data structure fields to support YFS " David Howells
2018-10-24  0:00 ` [PATCH 21/25] afs: Implement YFS support in the fs client " David Howells
2018-10-24  0:00 ` [PATCH 22/25] afs: Allow dumping of server cursor on operation failure " David Howells
2018-10-24  0:00 ` [PATCH 23/25] afs: Eliminate the address pointer from the address list cursor " David Howells
2018-10-24  0:00 ` [PATCH 24/25] afs: Fix callback handling " David Howells
2018-10-24  0:00 ` [PATCH 25/25] afs: Probe multiple fileservers simultaneously " David Howells

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