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From: allison.henderson@oracle.com
To: linux-xfs@vger.kernel.org
Subject: [PATCH v8 01/27] xfs: Add new name to attri/d
Date: Mon, 23 Jan 2023 18:35:54 -0700	[thread overview]
Message-ID: <20230124013620.1089319-2-allison.henderson@oracle.com> (raw)
In-Reply-To: <20230124013620.1089319-1-allison.henderson@oracle.com>

From: Allison Henderson <allison.henderson@oracle.com>

This patch adds two new fields to the atti/d.  They are nname and
nnamelen.  This will be used for parent pointer updates since a
rename operation may cause the parent pointer to update both the
name and value.  So we need to carry both the new name as well as
the target name in the attri/d.

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
---
 fs/xfs/libxfs/xfs_attr.c       |  12 ++-
 fs/xfs/libxfs/xfs_attr.h       |   4 +-
 fs/xfs/libxfs/xfs_da_btree.h   |   2 +
 fs/xfs/libxfs/xfs_log_format.h |   6 +-
 fs/xfs/xfs_attr_item.c         | 135 +++++++++++++++++++++++++++------
 fs/xfs/xfs_attr_item.h         |   1 +
 6 files changed, 133 insertions(+), 27 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index e28d93d232de..b1dbed7655e8 100644
--- a/fs/xfs/libxfs/xfs_attr.c
+++ b/fs/xfs/libxfs/xfs_attr.c
@@ -423,6 +423,12 @@ xfs_attr_complete_op(
 	args->op_flags &= ~XFS_DA_OP_REPLACE;
 	if (do_replace) {
 		args->attr_filter &= ~XFS_ATTR_INCOMPLETE;
+		if (args->new_namelen > 0) {
+			args->name = args->new_name;
+			args->namelen = args->new_namelen;
+			args->hashval = xfs_da_hashname(args->name,
+							args->namelen);
+		}
 		return replace_state;
 	}
 	return XFS_DAS_DONE;
@@ -922,9 +928,13 @@ xfs_attr_defer_replace(
 	struct xfs_da_args	*args)
 {
 	struct xfs_attr_intent	*new;
+	int			op_flag;
 	int			error = 0;
 
-	error = xfs_attr_intent_init(args, XFS_ATTRI_OP_FLAGS_REPLACE, &new);
+	op_flag = args->new_namelen == 0 ? XFS_ATTRI_OP_FLAGS_REPLACE :
+		  XFS_ATTRI_OP_FLAGS_NVREPLACE;
+
+	error = xfs_attr_intent_init(args, op_flag, &new);
 	if (error)
 		return error;
 
diff --git a/fs/xfs/libxfs/xfs_attr.h b/fs/xfs/libxfs/xfs_attr.h
index 81be9b3e4004..3e81f3f48560 100644
--- a/fs/xfs/libxfs/xfs_attr.h
+++ b/fs/xfs/libxfs/xfs_attr.h
@@ -510,8 +510,8 @@ struct xfs_attr_intent {
 	struct xfs_da_args		*xattri_da_args;
 
 	/*
-	 * Shared buffer containing the attr name and value so that the logging
-	 * code can share large memory buffers between log items.
+	 * Shared buffer containing the attr name, new name, and value so that
+	 * the logging code can share large memory buffers between log items.
 	 */
 	struct xfs_attri_log_nameval	*xattri_nameval;
 
diff --git a/fs/xfs/libxfs/xfs_da_btree.h b/fs/xfs/libxfs/xfs_da_btree.h
index ffa3df5b2893..a4b29827603f 100644
--- a/fs/xfs/libxfs/xfs_da_btree.h
+++ b/fs/xfs/libxfs/xfs_da_btree.h
@@ -55,7 +55,9 @@ enum xfs_dacmp {
 typedef struct xfs_da_args {
 	struct xfs_da_geometry *geo;	/* da block geometry */
 	const uint8_t		*name;		/* string (maybe not NULL terminated) */
+	const uint8_t	*new_name;	/* new attr name */
 	int		namelen;	/* length of string (maybe no NULL) */
+	int		new_namelen;	/* new attr name len */
 	uint8_t		filetype;	/* filetype of inode for directories */
 	void		*value;		/* set of bytes (maybe contain NULLs) */
 	int		valuelen;	/* length of value */
diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h
index f13e0809dc63..ae9c99762a24 100644
--- a/fs/xfs/libxfs/xfs_log_format.h
+++ b/fs/xfs/libxfs/xfs_log_format.h
@@ -117,7 +117,8 @@ struct xfs_unmount_log_format {
 #define XLOG_REG_TYPE_ATTRD_FORMAT	28
 #define XLOG_REG_TYPE_ATTR_NAME	29
 #define XLOG_REG_TYPE_ATTR_VALUE	30
-#define XLOG_REG_TYPE_MAX		30
+#define XLOG_REG_TYPE_ATTR_NNAME	31
+#define XLOG_REG_TYPE_MAX		31
 
 
 /*
@@ -957,6 +958,7 @@ struct xfs_icreate_log {
 #define XFS_ATTRI_OP_FLAGS_SET		1	/* Set the attribute */
 #define XFS_ATTRI_OP_FLAGS_REMOVE	2	/* Remove the attribute */
 #define XFS_ATTRI_OP_FLAGS_REPLACE	3	/* Replace the attribute */
+#define XFS_ATTRI_OP_FLAGS_NVREPLACE	4	/* Replace attr name and val */
 #define XFS_ATTRI_OP_FLAGS_TYPE_MASK	0xFF	/* Flags type mask */
 
 /*
@@ -974,7 +976,7 @@ struct xfs_icreate_log {
 struct xfs_attri_log_format {
 	uint16_t	alfi_type;	/* attri log item type */
 	uint16_t	alfi_size;	/* size of this item */
-	uint32_t	__pad;		/* pad to 64 bit aligned */
+	uint32_t	alfi_nname_len;	/* attr new name length */
 	uint64_t	alfi_id;	/* attri identifier */
 	uint64_t	alfi_ino;	/* the inode for this attr operation */
 	uint32_t	alfi_op_flags;	/* marks the op as a set or remove */
diff --git a/fs/xfs/xfs_attr_item.c b/fs/xfs/xfs_attr_item.c
index 2788a6f2edcd..95e9ecbb4a67 100644
--- a/fs/xfs/xfs_attr_item.c
+++ b/fs/xfs/xfs_attr_item.c
@@ -75,6 +75,8 @@ static inline struct xfs_attri_log_nameval *
 xfs_attri_log_nameval_alloc(
 	const void			*name,
 	unsigned int			name_len,
+	const void			*nname,
+	unsigned int			nname_len,
 	const void			*value,
 	unsigned int			value_len)
 {
@@ -85,15 +87,25 @@ xfs_attri_log_nameval_alloc(
 	 * this. But kvmalloc() utterly sucks, so we use our own version.
 	 */
 	nv = xlog_kvmalloc(sizeof(struct xfs_attri_log_nameval) +
-					name_len + value_len);
+					name_len + nname_len + value_len);
 
 	nv->name.i_addr = nv + 1;
 	nv->name.i_len = name_len;
 	nv->name.i_type = XLOG_REG_TYPE_ATTR_NAME;
 	memcpy(nv->name.i_addr, name, name_len);
 
+	if (nname_len) {
+		nv->nname.i_addr = nv->name.i_addr + name_len;
+		nv->nname.i_len = nname_len;
+		memcpy(nv->nname.i_addr, nname, nname_len);
+	} else {
+		nv->nname.i_addr = NULL;
+		nv->nname.i_len = 0;
+	}
+	nv->nname.i_type = XLOG_REG_TYPE_ATTR_NNAME;
+
 	if (value_len) {
-		nv->value.i_addr = nv->name.i_addr + name_len;
+		nv->value.i_addr = nv->name.i_addr + nname_len + name_len;
 		nv->value.i_len = value_len;
 		memcpy(nv->value.i_addr, value, value_len);
 	} else {
@@ -147,11 +159,15 @@ xfs_attri_item_size(
 	*nbytes += sizeof(struct xfs_attri_log_format) +
 			xlog_calc_iovec_len(nv->name.i_len);
 
-	if (!nv->value.i_len)
-		return;
+	if (nv->nname.i_len) {
+		*nvecs += 1;
+		*nbytes += xlog_calc_iovec_len(nv->nname.i_len);
+	}
 
-	*nvecs += 1;
-	*nbytes += xlog_calc_iovec_len(nv->value.i_len);
+	if (nv->value.i_len) {
+		*nvecs += 1;
+		*nbytes += xlog_calc_iovec_len(nv->value.i_len);
+	}
 }
 
 /*
@@ -181,6 +197,9 @@ xfs_attri_item_format(
 	ASSERT(nv->name.i_len > 0);
 	attrip->attri_format.alfi_size++;
 
+	if (nv->nname.i_len > 0)
+		attrip->attri_format.alfi_size++;
+
 	if (nv->value.i_len > 0)
 		attrip->attri_format.alfi_size++;
 
@@ -188,6 +207,10 @@ xfs_attri_item_format(
 			&attrip->attri_format,
 			sizeof(struct xfs_attri_log_format));
 	xlog_copy_from_iovec(lv, &vecp, &nv->name);
+
+	if (nv->nname.i_len > 0)
+		xlog_copy_from_iovec(lv, &vecp, &nv->nname);
+
 	if (nv->value.i_len > 0)
 		xlog_copy_from_iovec(lv, &vecp, &nv->value);
 }
@@ -374,6 +397,7 @@ xfs_attr_log_item(
 	attrp->alfi_op_flags = attr->xattri_op_flags;
 	attrp->alfi_value_len = attr->xattri_nameval->value.i_len;
 	attrp->alfi_name_len = attr->xattri_nameval->name.i_len;
+	attrp->alfi_nname_len = attr->xattri_nameval->nname.i_len;
 	ASSERT(!(attr->xattri_da_args->attr_filter & ~XFS_ATTRI_FILTER_MASK));
 	attrp->alfi_attr_filter = attr->xattri_da_args->attr_filter;
 }
@@ -415,7 +439,8 @@ xfs_attr_create_intent(
 		 * deferred work state structure.
 		 */
 		attr->xattri_nameval = xfs_attri_log_nameval_alloc(args->name,
-				args->namelen, args->value, args->valuelen);
+				args->namelen, args->new_name,
+				args->new_namelen, args->value, args->valuelen);
 	}
 
 	attrip = xfs_attri_init(mp, attr->xattri_nameval);
@@ -503,7 +528,8 @@ xfs_attri_validate(
 	unsigned int			op = attrp->alfi_op_flags &
 					     XFS_ATTRI_OP_FLAGS_TYPE_MASK;
 
-	if (attrp->__pad != 0)
+	if (attrp->alfi_op_flags != XFS_ATTRI_OP_FLAGS_NVREPLACE &&
+	    attrp->alfi_nname_len != 0)
 		return false;
 
 	if (attrp->alfi_op_flags & ~XFS_ATTRI_OP_FLAGS_TYPE_MASK)
@@ -517,6 +543,7 @@ xfs_attri_validate(
 	case XFS_ATTRI_OP_FLAGS_SET:
 	case XFS_ATTRI_OP_FLAGS_REPLACE:
 	case XFS_ATTRI_OP_FLAGS_REMOVE:
+	case XFS_ATTRI_OP_FLAGS_NVREPLACE:
 		break;
 	default:
 		return false;
@@ -526,9 +553,14 @@ xfs_attri_validate(
 		return false;
 
 	if ((attrp->alfi_name_len > XATTR_NAME_MAX) ||
+	    (attrp->alfi_nname_len > XATTR_NAME_MAX) ||
 	    (attrp->alfi_name_len == 0))
 		return false;
 
+	if (op == XFS_ATTRI_OP_FLAGS_REMOVE &&
+	    attrp->alfi_value_len != 0)
+		return false;
+
 	return xfs_verify_ino(mp, attrp->alfi_ino);
 }
 
@@ -589,6 +621,8 @@ xfs_attri_item_recover(
 	args->whichfork = XFS_ATTR_FORK;
 	args->name = nv->name.i_addr;
 	args->namelen = nv->name.i_len;
+	args->new_name = nv->nname.i_addr;
+	args->new_namelen = nv->nname.i_len;
 	args->hashval = xfs_da_hashname(args->name, args->namelen);
 	args->attr_filter = attrp->alfi_attr_filter & XFS_ATTRI_FILTER_MASK;
 	args->op_flags = XFS_DA_OP_RECOVERY | XFS_DA_OP_OKNOENT |
@@ -599,6 +633,7 @@ xfs_attri_item_recover(
 	switch (attr->xattri_op_flags) {
 	case XFS_ATTRI_OP_FLAGS_SET:
 	case XFS_ATTRI_OP_FLAGS_REPLACE:
+	case XFS_ATTRI_OP_FLAGS_NVREPLACE:
 		args->value = nv->value.i_addr;
 		args->valuelen = nv->value.i_len;
 		args->total = xfs_attr_calc_size(args, &local);
@@ -688,6 +723,7 @@ xfs_attri_item_relog(
 	new_attrp->alfi_op_flags = old_attrp->alfi_op_flags;
 	new_attrp->alfi_value_len = old_attrp->alfi_value_len;
 	new_attrp->alfi_name_len = old_attrp->alfi_name_len;
+	new_attrp->alfi_nname_len = old_attrp->alfi_nname_len;
 	new_attrp->alfi_attr_filter = old_attrp->alfi_attr_filter;
 
 	xfs_trans_add_item(tp, &new_attrip->attri_item);
@@ -710,48 +746,102 @@ xlog_recover_attri_commit_pass2(
 	const void			*attr_value = NULL;
 	const void			*attr_name;
 	size_t				len;
-
-	attri_formatp = item->ri_buf[0].i_addr;
-	attr_name = item->ri_buf[1].i_addr;
+	const void			*attr_nname = NULL;
+	int				op, i = 0;
 
 	/* Validate xfs_attri_log_format before the large memory allocation */
 	len = sizeof(struct xfs_attri_log_format);
-	if (item->ri_buf[0].i_len != len) {
+	if (item->ri_buf[i].i_len != len) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[i].i_addr, item->ri_buf[i].i_len);
 		return -EFSCORRUPTED;
 	}
 
+	attri_formatp = item->ri_buf[i].i_addr;
 	if (!xfs_attri_validate(mp, attri_formatp)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[i].i_addr, item->ri_buf[i].i_len);
+		return -EFSCORRUPTED;
+	}
+
+	op = attri_formatp->alfi_op_flags & XFS_ATTRI_OP_FLAGS_TYPE_MASK;
+	switch (op) {
+	case XFS_ATTRI_OP_FLAGS_SET:
+	case XFS_ATTRI_OP_FLAGS_REPLACE:
+		if (item->ri_total != 3) {
+			XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
+					     attri_formatp, len);
+			return -EFSCORRUPTED;
+		}
+		break;
+	case XFS_ATTRI_OP_FLAGS_REMOVE:
+		if (item->ri_total != 2) {
+			XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
+					     attri_formatp, len);
+			return -EFSCORRUPTED;
+		}
+		break;
+	case XFS_ATTRI_OP_FLAGS_NVREPLACE:
+		if (item->ri_total != 4) {
+			XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
+					     attri_formatp, len);
+			return -EFSCORRUPTED;
+		}
+		break;
+	default:
+		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
+				     attri_formatp, len);
 		return -EFSCORRUPTED;
 	}
 
+	i++;
 	/* Validate the attr name */
-	if (item->ri_buf[1].i_len !=
+	if (item->ri_buf[i].i_len !=
 			xlog_calc_iovec_len(attri_formatp->alfi_name_len)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				attri_formatp, len);
 		return -EFSCORRUPTED;
 	}
 
+	attr_name = item->ri_buf[i].i_addr;
 	if (!xfs_attr_namecheck(attr_name, attri_formatp->alfi_name_len)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[1].i_addr, item->ri_buf[1].i_len);
+				item->ri_buf[i].i_addr, item->ri_buf[i].i_len);
 		return -EFSCORRUPTED;
 	}
 
+	i++;
+	if (attri_formatp->alfi_nname_len) {
+		/* Validate the attr nname */
+		if (item->ri_buf[i].i_len !=
+		    xlog_calc_iovec_len(attri_formatp->alfi_nname_len)) {
+			XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
+					item->ri_buf[i].i_addr,
+					item->ri_buf[i].i_len);
+			return -EFSCORRUPTED;
+		}
+
+		attr_nname = item->ri_buf[i].i_addr;
+		if (!xfs_attr_namecheck(attr_nname,
+				attri_formatp->alfi_nname_len)) {
+			XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
+					item->ri_buf[i].i_addr,
+					item->ri_buf[i].i_len);
+			return -EFSCORRUPTED;
+		}
+		i++;
+	}
+
+
 	/* Validate the attr value, if present */
 	if (attri_formatp->alfi_value_len != 0) {
-		if (item->ri_buf[2].i_len != xlog_calc_iovec_len(attri_formatp->alfi_value_len)) {
+		if (item->ri_buf[i].i_len != xlog_calc_iovec_len(attri_formatp->alfi_value_len)) {
 			XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-					item->ri_buf[0].i_addr,
-					item->ri_buf[0].i_len);
+					attri_formatp, len);
 			return -EFSCORRUPTED;
 		}
 
-		attr_value = item->ri_buf[2].i_addr;
+		attr_value = item->ri_buf[i].i_addr;
 	}
 
 	/*
@@ -760,7 +850,8 @@ xlog_recover_attri_commit_pass2(
 	 * reference.
 	 */
 	nv = xfs_attri_log_nameval_alloc(attr_name,
-			attri_formatp->alfi_name_len, attr_value,
+			attri_formatp->alfi_name_len, attr_nname,
+			attri_formatp->alfi_nname_len, attr_value,
 			attri_formatp->alfi_value_len);
 
 	attrip = xfs_attri_init(mp, nv);
diff --git a/fs/xfs/xfs_attr_item.h b/fs/xfs/xfs_attr_item.h
index 3280a7930287..24d4968dd6cc 100644
--- a/fs/xfs/xfs_attr_item.h
+++ b/fs/xfs/xfs_attr_item.h
@@ -13,6 +13,7 @@ struct kmem_zone;
 
 struct xfs_attri_log_nameval {
 	struct xfs_log_iovec	name;
+	struct xfs_log_iovec	nname;
 	struct xfs_log_iovec	value;
 	refcount_t		refcount;
 
-- 
2.25.1


  reply	other threads:[~2023-01-24  1:36 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-24  1:35 [PATCH v8 00/27] Parent Pointers allison.henderson
2023-01-24  1:35 ` allison.henderson [this message]
2023-01-24  1:35 ` [PATCH v8 02/27] xfs: Increase XFS_DEFER_OPS_NR_INODES to 5 allison.henderson
2023-01-24  1:35 ` [PATCH v8 03/27] xfs: Increase XFS_QM_TRANS_MAXDQS " allison.henderson
2023-01-24  1:35 ` [PATCH v8 04/27] xfs: Hold inode locks in xfs_ialloc allison.henderson
2023-01-24  1:35 ` [PATCH v8 05/27] xfs: Hold inode locks in xfs_trans_alloc_dir allison.henderson
2023-01-24  1:35 ` [PATCH v8 06/27] xfs: Hold inode locks in xfs_rename allison.henderson
2023-01-24  1:36 ` [PATCH v8 07/27] xfs: Expose init_xattrs in xfs_create_tmpfile allison.henderson
2023-01-24  1:36 ` [PATCH v8 08/27] xfs: get directory offset when adding directory name allison.henderson
2023-01-24  1:36 ` [PATCH v8 09/27] xfs: get directory offset when removing " allison.henderson
2023-01-24  1:36 ` [PATCH v8 10/27] xfs: get directory offset when replacing a " allison.henderson
2023-01-24  1:36 ` [PATCH v8 11/27] xfs: add parent pointer support to attribute code allison.henderson
2023-01-24  1:36 ` [PATCH v8 12/27] xfs: define parent pointer xattr format allison.henderson
2023-01-24  1:36 ` [PATCH v8 13/27] xfs: Add xfs_verify_pptr allison.henderson
2023-01-24  1:36 ` [PATCH v8 14/27] xfs: extend transaction reservations for parent attributes allison.henderson
2023-01-24  1:36 ` [PATCH v8 15/27] xfs: parent pointer attribute creation allison.henderson
2023-01-24  1:36 ` [PATCH v8 16/27] xfs: add parent attributes to link allison.henderson
2023-01-24  1:36 ` [PATCH v8 17/27] xfs: add parent attributes to symlink allison.henderson
2023-01-24  1:36 ` [PATCH v8 18/27] xfs: remove parent pointers in unlink allison.henderson
2023-01-24  1:36 ` [PATCH v8 19/27] xfs: Indent xfs_rename allison.henderson
2023-01-24  1:36 ` [PATCH v8 20/27] xfs: Add parent pointers to rename allison.henderson
2023-01-24  1:36 ` [PATCH v8 21/27] xfs: Add parent pointers to xfs_cross_rename allison.henderson
2023-01-24  1:36 ` [PATCH v8 22/27] xfs: Add the parent pointer support to the superblock version 5 allison.henderson
2023-01-24  1:36 ` [PATCH v8 23/27] xfs: Add helper function xfs_attr_list_context_init allison.henderson
2023-01-24  1:36 ` [PATCH v8 24/27] xfs: Filter XFS_ATTR_PARENT for getfattr allison.henderson
2023-01-24  1:36 ` [PATCH v8 25/27] xfs: Add parent pointer ioctl allison.henderson
2023-01-24  1:36 ` [PATCH v8 26/27] xfs: fix unit conversion error in xfs_log_calc_max_attrsetm_res allison.henderson
2023-01-24  1:36 ` [PATCH v8 27/27] xfs: drop compatibility minimum log size computations for reflink allison.henderson
2023-01-24  4:38 ` [PATCH v8 00/27] Parent Pointers Darrick J. Wong
2023-01-24  7:38   ` Allison Henderson
2023-01-25  1:15     ` Darrick J. Wong
2023-01-25 17:10       ` Darrick J. Wong
2023-01-25 20:54         ` Allison Henderson
2023-02-01  1:12           ` Darrick J. Wong

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    --in-reply-to=20230124013620.1089319-2-allison.henderson@oracle.com \
    --to=allison.henderson@oracle.com \
    --cc=linux-xfs@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

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