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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 18/24] afs: Get the target vnode in afs_rmdir() and get a callback on it
Date: Sat, 20 Oct 2018 02:12:48 +0100	[thread overview]
Message-ID: <153999796874.866.1742381261079467582.stgit@warthog.procyon.org.uk> (raw)
In-Reply-To: <153999783767.866.7957078562330181644.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:[~2018-10-20  1:12 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-20  1:10 [PATCH 00/24] AFS development David Howells
2018-10-20  1:10 ` [PATCH 01/24] iov_iter: Separate type from direction and use accessor functions David Howells
2018-10-20  4:56   ` Al Viro
2018-10-22 13:00   ` David Howells
2018-10-20  1:10 ` [PATCH 02/24] iov_iter: Renumber the ITER_* constants in uio.h David Howells
2018-10-20  4:59   ` Al Viro
2018-10-22 15:54   ` David Howells
2018-10-23 13:20   ` David Howells
2018-10-20  1:10 ` [PATCH 03/24] iov_iter: Add I/O discard iterator David Howells
2018-10-20  5:05   ` Al Viro
2018-10-22 16:18   ` David Howells
2018-10-20  1:11 ` [PATCH 04/24] afs: Better tracing of protocol errors David Howells
2018-10-20  1:11 ` [PATCH 05/24] afs: Set up the iov_iter before calling afs_extract_data() David Howells
2018-10-20  1:11 ` [PATCH 06/24] afs: Improve FS server rotation error handling David Howells
2018-10-20  1:11 ` [PATCH 07/24] afs: Implement VL server rotation David Howells
2018-10-20  1:11 ` [PATCH 08/24] afs: Fix TTL on VL server and address lists David Howells
2018-10-20  1:11 ` [PATCH 09/24] afs: Handle EIO from delivery function David Howells
2018-10-20  1:11 ` [PATCH 10/24] afs: Add a couple of tracepoints to log I/O errors David Howells
2018-10-20  1:11 ` [PATCH 11/24] afs: Don't invoke the server to read data beyond EOF David Howells
2018-10-20  1:12 ` [PATCH 12/24] afs: Increase to 64-bit volume ID and 96-bit vnode ID for YFS David Howells
2018-10-20  1:12 ` [PATCH 13/24] afs: Commit the status on a new file/dir/symlink David Howells
2018-10-20  1:12 ` [PATCH 14/24] afs: Remove callback details from afs_callback_break struct David Howells
2018-10-20  1:12 ` [PATCH 15/24] afs: Implement the YFS cache manager service David Howells
2018-10-20  1:12 ` [PATCH 16/24] afs: Fix FS.FetchStatus delivery from updating wrong vnode David Howells
2018-10-20  1:12 ` [PATCH 17/24] afs: Calc callback expiry in op reply delivery David Howells
2018-10-20  1:12 ` David Howells [this message]
2018-10-20  1:12 ` [PATCH 19/24] afs: Expand data structure fields to support YFS David Howells
2018-10-20  1:13 ` [PATCH 20/24] afs: Implement YFS support in the fs client David Howells
2018-10-20  1:13 ` [PATCH 21/24] afs: Allow dumping of server cursor on operation failure David Howells
2018-10-20  1:13 ` [PATCH 22/24] afs: Eliminate the address pointer from the address list cursor David Howells
2018-10-20  1:13 ` [PATCH 23/24] afs: Fix callback handling David Howells
2018-10-20  1:13 ` [PATCH 24/24] afs: Probe multiple fileservers simultaneously David Howells

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