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Merge branch 'xfs-4.7-cleanup-attr-listent' into for-next

This commit is contained in:
Dave Chinner 2016-05-20 10:32:35 +10:00
parent 5b9113547f 3ab3ffcaca
commit a7792aad64
3 changed files with 37 additions and 65 deletions
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4
fs/xfs/xfs_attr.h
View File

@ -112,8 +112,9 @@ typedef struct attrlist_cursor_kern {
*========================================================================*/
/* Return 0 on success, or -errno; other state communicated via *context */
typedef int (*put_listent_func_t)(struct xfs_attr_list_context *, int,
unsigned char *, int, int, unsigned char *);
unsigned char *, int, int);
typedef struct xfs_attr_list_context {
struct xfs_inode *dp; /* inode */
@ -126,7 +127,6 @@ typedef struct xfs_attr_list_context {
int firstu; /* first used byte in buffer */
int flags; /* from VOP call */
int resynch; /* T/F: resynch with cursor */
int put_value; /* T/F: need value for listent */
put_listent_func_t put_listent; /* list output fmt function */
int index; /* index into output buffer */
} xfs_attr_list_context_t;

81
fs/xfs/xfs_attr_list.c
View File

@ -106,18 +106,15 @@ xfs_attr_shortform_list(xfs_attr_list_context_t *context)
sfe->flags,
sfe->nameval,
(int)sfe->namelen,
(int)sfe->valuelen,
&sfe->nameval[sfe->namelen]);
(int)sfe->valuelen);
if (error)
return error;
/*
* Either search callback finished early or
* didn't fit it all in the buffer after all.
*/
if (context->seen_enough)
break;
if (error)
return error;
sfe = XFS_ATTR_SF_NEXTENTRY(sfe);
}
trace_xfs_attr_list_sf_all(context);
@ -200,8 +197,7 @@ xfs_attr_shortform_list(xfs_attr_list_context_t *context)
sbp->flags,
sbp->name,
sbp->namelen,
sbp->valuelen,
&sbp->name[sbp->namelen]);
sbp->valuelen);
if (error) {
kmem_free(sbuf);
return error;
@ -416,6 +412,9 @@ xfs_attr3_leaf_list_int(
*/
retval = 0;
for (; i < ichdr.count; entry++, i++) {
char *name;
int namelen, valuelen;
if (be32_to_cpu(entry->hashval) != cursor->hashval) {
cursor->hashval = be32_to_cpu(entry->hashval);
cursor->offset = 0;
@ -425,56 +424,25 @@ xfs_attr3_leaf_list_int(
continue; /* skip incomplete entries */
if (entry->flags & XFS_ATTR_LOCAL) {
xfs_attr_leaf_name_local_t *name_loc =
xfs_attr3_leaf_name_local(leaf, i);
xfs_attr_leaf_name_local_t *name_loc;
retval = context->put_listent(context,
entry->flags,
name_loc->nameval,
(int)name_loc->namelen,
be16_to_cpu(name_loc->valuelen),
&name_loc->nameval[name_loc->namelen]);
if (retval)
return retval;
name_loc = xfs_attr3_leaf_name_local(leaf, i);
name = name_loc->nameval;
namelen = name_loc->namelen;
valuelen = be16_to_cpu(name_loc->valuelen);
} else {
xfs_attr_leaf_name_remote_t *name_rmt =
xfs_attr3_leaf_name_remote(leaf, i);
xfs_attr_leaf_name_remote_t *name_rmt;
int valuelen = be32_to_cpu(name_rmt->valuelen);
if (context->put_value) {
xfs_da_args_t args;
memset((char *)&args, 0, sizeof(args));
args.geo = context->dp->i_mount->m_attr_geo;
args.dp = context->dp;
args.whichfork = XFS_ATTR_FORK;
args.valuelen = valuelen;
args.rmtvaluelen = valuelen;
args.value = kmem_alloc(valuelen, KM_SLEEP | KM_NOFS);
args.rmtblkno = be32_to_cpu(name_rmt->valueblk);
args.rmtblkcnt = xfs_attr3_rmt_blocks(
args.dp->i_mount, valuelen);
retval = xfs_attr_rmtval_get(&args);
if (!retval)
retval = context->put_listent(context,
entry->flags,
name_rmt->name,
(int)name_rmt->namelen,
valuelen,
args.value);
kmem_free(args.value);
} else {
retval = context->put_listent(context,
entry->flags,
name_rmt->name,
(int)name_rmt->namelen,
valuelen,
NULL);
}
if (retval)
return retval;
name_rmt = xfs_attr3_leaf_name_remote(leaf, i);
name = name_rmt->name;
namelen = name_rmt->namelen;
valuelen = be32_to_cpu(name_rmt->valuelen);
}
retval = context->put_listent(context, entry->flags,
name, namelen, valuelen);
if (retval)
break;
if (context->seen_enough)
break;
cursor->offset++;
@ -551,8 +519,7 @@ xfs_attr_put_listent(
int flags,
unsigned char *name,
int namelen,
int valuelen,
unsigned char *value)
int valuelen)
{
struct attrlist *alist = (struct attrlist *)context->alist;
attrlist_ent_t *aep;
@ -581,7 +548,7 @@ xfs_attr_put_listent(
trace_xfs_attr_list_full(context);
alist->al_more = 1;
context->seen_enough = 1;
return 1;
return 0;
}
aep = (attrlist_ent_t *)&context->alist[context->firstu];

17
fs/xfs/xfs_xattr.c
View File

@ -146,7 +146,7 @@ __xfs_xattr_put_listent(
arraytop = context->count + prefix_len + namelen + 1;
if (arraytop > context->firstu) {
context->count = -1; /* insufficient space */
return 1;
return 0;
}
offset = (char *)context->alist + context->count;
strncpy(offset, prefix, prefix_len);
@ -166,8 +166,7 @@ xfs_xattr_put_listent(
int flags,
unsigned char *name,
int namelen,
int valuelen,
unsigned char *value)
int valuelen)
{
char *prefix;
int prefix_len;
@ -221,11 +220,15 @@ xfs_xattr_put_listent(
}
ssize_t
xfs_vn_listxattr(struct dentry *dentry, char *data, size_t size)
xfs_vn_listxattr(
struct dentry *dentry,
char *data,
size_t size)
{
struct xfs_attr_list_context context;
struct attrlist_cursor_kern cursor = { 0 };
struct inode *inode = d_inode(dentry);
struct inode *inode = d_inode(dentry);
int error;
/*
* First read the regular on-disk attributes.
@ -239,7 +242,9 @@ xfs_vn_listxattr(struct dentry *dentry, char *data, size_t size)
context.firstu = context.bufsize;
context.put_listent = xfs_xattr_put_listent;
xfs_attr_list_int(&context);
error = xfs_attr_list_int(&context);
if (error)
return error;
if (context.count < 0)
return -ERANGE;