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.
As discussed in the reviews, I've added a new XFS_ATTRI_OP_FLAGS*
type: XFS_ATTRI_OP_FLAGS_NRENAME. However, I do not think it is
needed, since args->new_namelen is always available. I've left the
new type in for people to discuss, but unless we find a use for it
int the reviews, my recommendation would be to remove it and use
the existing XFS_ATTRI_OP_FLAGS_RENAME with a check for
args->new_namelen > 0.
Feedback appreciated. Thanks all!
Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
---
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 | 5 ++-
fs/xfs/xfs_attr_item.c | 71 ++++++++++++++++++++++++++++------
fs/xfs/xfs_attr_item.h | 1 +
fs/xfs/xfs_ondisk.h | 2 +-
7 files changed, 81 insertions(+), 16 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
index e28d93d232de..9f2fb4903b71 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_NREPLACE;
+
+ 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..e9fb801844f2 100644
--- a/fs/xfs/libxfs/xfs_da_btree.h
+++ b/fs/xfs/libxfs/xfs_da_btree.h
@@ -56,6 +56,8 @@ typedef struct xfs_da_args {
struct xfs_da_geometry *geo; /* da block geometry */
const uint8_t *name; /* string (maybe not NULL terminated) */
int namelen; /* length of string (maybe no NULL) */
+ const uint8_t *new_name; /* new attr name */
+ 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 b351b9dc6561..8a22f315532c 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
/*
@@ -909,6 +910,7 @@ 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_NREPLACE 4 /* Replace attr name and val */
#define XFS_ATTRI_OP_FLAGS_TYPE_MASK 0xFF /* Flags type mask */
/*
@@ -931,6 +933,7 @@ struct xfs_attri_log_format {
uint64_t alfi_ino; /* the inode for this attr operation */
uint32_t alfi_op_flags; /* marks the op as a set or remove */
uint32_t alfi_name_len; /* attr name length */
+ uint32_t alfi_nname_len; /* attr new name length */
uint32_t alfi_value_len; /* attr value length */
uint32_t alfi_attr_filter;/* attr filter flags */
};
diff --git a/fs/xfs/xfs_attr_item.c b/fs/xfs/xfs_attr_item.c
index 5077a7ad5646..40cbc95bf9b5 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)
{
@@ -85,7 +87,7 @@ 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);
if (!nv)
return nv;
@@ -94,8 +96,18 @@ xfs_attri_log_nameval_alloc(
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 {
@@ -149,11 +161,15 @@ 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);
+ }
}
/*
@@ -183,6 +199,9 @@ 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++;
@@ -190,6 +209,10 @@ 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);
}
@@ -398,6 +421,7 @@ 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;
}
@@ -439,7 +463,8 @@ 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);
}
if (!attr->xattri_nameval)
return ERR_PTR(-ENOMEM);
@@ -543,6 +568,7 @@ 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_NREPLACE:
break;
default:
return false;
@@ -552,6 +578,7 @@ 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;
@@ -615,6 +642,8 @@ 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 |
@@ -625,6 +654,7 @@ 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_NREPLACE:
args->value = nv->value.i_addr;
args->valuelen = nv->value.i_len;
args->total = xfs_attr_calc_size(args, &local);
@@ -714,6 +744,7 @@ 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);
@@ -735,10 +766,15 @@ xlog_recover_attri_commit_pass2(
struct xfs_attri_log_nameval *nv;
const void *attr_value = NULL;
const void *attr_name;
+ const void *attr_nname = NULL;
+ int i = 0;
int error;
- attri_formatp = item->ri_buf[0].i_addr;
- attr_name = item->ri_buf[1].i_addr;
+ attri_formatp = item->ri_buf[i].i_addr;
+ i++;
+
+ attr_name = item->ri_buf[i].i_addr;
+ i++;
/* Validate xfs_attri_log_format before the large memory allocation */
if (!xfs_attri_validate(mp, attri_formatp)) {
@@ -751,8 +787,20 @@ xlog_recover_attri_commit_pass2(
return -EFSCORRUPTED;
}
+ if (attri_formatp->alfi_nname_len) {
+ attr_nname = item->ri_buf[i].i_addr;
+ i++;
+
+ if (!xfs_attr_namecheck(mp, attr_nname,
+ attri_formatp->alfi_nname_len,
+ attri_formatp->alfi_attr_filter)) {
+ XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp);
+ return -EFSCORRUPTED;
+ }
+ }
+
if (attri_formatp->alfi_value_len)
- attr_value = item->ri_buf[2].i_addr;
+ attr_value = item->ri_buf[i].i_addr;
/*
* Memory alloc failure will cause replay to abort. We attach the
@@ -760,7 +808,8 @@ 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);
if (!nv)
return -ENOMEM;
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;
diff --git a/fs/xfs/xfs_ondisk.h b/fs/xfs/xfs_ondisk.h
index 758702b9495f..97d4ebedcf40 100644
--- a/fs/xfs/xfs_ondisk.h
+++ b/fs/xfs/xfs_ondisk.h
@@ -132,7 +132,7 @@ xfs_check_ondisk_structs(void)
XFS_CHECK_STRUCT_SIZE(struct xfs_inode_log_format, 56);
XFS_CHECK_STRUCT_SIZE(struct xfs_qoff_logformat, 20);
XFS_CHECK_STRUCT_SIZE(struct xfs_trans_header, 16);
- XFS_CHECK_STRUCT_SIZE(struct xfs_attri_log_format, 40);
+ XFS_CHECK_STRUCT_SIZE(struct xfs_attri_log_format, 48);
XFS_CHECK_STRUCT_SIZE(struct xfs_attrd_log_format, 16);
/*
--
2.25.1
