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xfs: pass the attr value to put_listent when possible

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Pass the attr value to put_listent when we have local xattrs or
shortform xattrs.  This will enable the GETPARENTS ioctl to use
xfs_attr_list as its backend.

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Allison Henderson 2024-04-22 09:47:53 -07:00 committed by Darrick J. Wong
parent daf9f88490
commit 8f4b980ee6
5 changed files with 13 additions and 3 deletions
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5
fs/xfs/libxfs/xfs_attr.h
View file

@ -47,8 +47,9 @@ struct xfs_attrlist_cursor_kern {
/* void; state communicated via *context */
typedef void (*put_listent_func_t)(struct xfs_attr_list_context *, int,
unsigned char *, int, int);
typedef void (*put_listent_func_t)(struct xfs_attr_list_context *context,
int flags, unsigned char *name, int namelen, void *value,
int valuelen);
struct xfs_attr_list_context {
struct xfs_trans *tp;

1
fs/xfs/libxfs/xfs_attr_sf.h
View file

@ -16,6 +16,7 @@ typedef struct xfs_attr_sf_sort {
uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */
xfs_dahash_t hash; /* this entry's hash value */
unsigned char *name; /* name value, pointer into buffer */
void *value;
} xfs_attr_sf_sort_t;
#define XFS_ATTR_SF_ENTSIZE_MAX /* max space for name&value */ \

8
fs/xfs/xfs_attr_list.c
View file

@ -92,6 +92,7 @@ xfs_attr_shortform_list(
sfe->flags,
sfe->nameval,
(int)sfe->namelen,
&sfe->nameval[sfe->namelen],
(int)sfe->valuelen);
/*
* Either search callback finished early or
@ -138,6 +139,7 @@ xfs_attr_shortform_list(
sbp->name = sfe->nameval;
sbp->namelen = sfe->namelen;
/* These are bytes, and both on-disk, don't endian-flip */
sbp->value = &sfe->nameval[sfe->namelen],
sbp->valuelen = sfe->valuelen;
sbp->flags = sfe->flags;
sbp->hash = xfs_attr_hashval(dp->i_mount, sfe->flags,
@ -192,6 +194,7 @@ xfs_attr_shortform_list(
sbp->flags,
sbp->name,
sbp->namelen,
sbp->value,
sbp->valuelen);
if (context->seen_enough)
break;
@ -479,6 +482,7 @@ xfs_attr3_leaf_list_int(
*/
for (; i < ichdr.count; entry++, i++) {
char *name;
void *value;
int namelen, valuelen;
if (be32_to_cpu(entry->hashval) != cursor->hashval) {
@ -496,6 +500,7 @@ xfs_attr3_leaf_list_int(
name_loc = xfs_attr3_leaf_name_local(leaf, i);
name = name_loc->nameval;
namelen = name_loc->namelen;
value = &name_loc->nameval[name_loc->namelen];
valuelen = be16_to_cpu(name_loc->valuelen);
} else {
xfs_attr_leaf_name_remote_t *name_rmt;
@ -503,6 +508,7 @@ xfs_attr3_leaf_list_int(
name_rmt = xfs_attr3_leaf_name_remote(leaf, i);
name = name_rmt->name;
namelen = name_rmt->namelen;
value = NULL;
valuelen = be32_to_cpu(name_rmt->valuelen);
}
@ -513,7 +519,7 @@ xfs_attr3_leaf_list_int(
return -EFSCORRUPTED;
}
context->put_listent(context, entry->flags,
name, namelen, valuelen);
name, namelen, value, valuelen);
if (context->seen_enough)
break;
cursor->offset++;

1
fs/xfs/xfs_ioctl.c
View file

@ -310,6 +310,7 @@ xfs_ioc_attr_put_listent(
int flags,
unsigned char *name,
int namelen,
void *value,
int valuelen)
{
struct xfs_attrlist *alist = context->buffer;

1
fs/xfs/xfs_xattr.c
View file

@ -222,6 +222,7 @@ xfs_xattr_put_listent(
int flags,
unsigned char *name,
int namelen,
void *value,
int valuelen)
{
char *prefix;