The old xfs_attr_list code is only used by the attrlist by handle
ioctl. Move it to xfs_ioctl.c with its user. Also move the
attrlist and attrlist_ent structure to xfs_fs.h, as they are exposed
user ABIs. They are used through libattr headers with the same name
by at least xfsdump. Also document this relation so that it doesn't
require a research project to figure out.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
Reviewed-by: Chandan Rajendra <chandanrlinux@xxxxxxxxx>
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Signed-off-by: Allison Collins <allison.henderson@xxxxxxxxxx>
---
libxfs/xfs_attr.h | 23 -----------------------
libxfs/xfs_fs.h | 20 ++++++++++++++++++++
2 files changed, 20 insertions(+), 23 deletions(-)
diff --git a/libxfs/xfs_attr.h b/libxfs/xfs_attr.h
index 31c0ffd..0e3c213 100644
--- a/libxfs/xfs_attr.h
+++ b/libxfs/xfs_attr.h
@@ -49,27 +49,6 @@ struct xfs_attr_list_context;
#define ATTR_MAX_VALUELEN (64*1024) /* max length of a value */
/*
- * Define how lists of attribute names are returned to the user from
- * the attr_list() call. A large, 32bit aligned, buffer is passed in
- * along with its size. We put an array of offsets at the top that each
- * reference an attrlist_ent_t and pack the attrlist_ent_t's at the bottom.
- */
-typedef struct attrlist {
- __s32 al_count; /* number of entries in attrlist */
- __s32 al_more; /* T/F: more attrs (do call again) */
- __s32 al_offset[1]; /* byte offsets of attrs [var-sized] */
-} attrlist_t;
-
-/*
- * Show the interesting info about one attribute. This is what the
- * al_offset[i] entry points to.
- */
-typedef struct attrlist_ent { /* data from attr_list() */
- __u32 a_valuelen; /* number bytes in value of attr */
- char a_name[1]; /* attr name (NULL terminated) */
-} attrlist_ent_t;
-
-/*
* Kernel-internal version of the attrlist cursor.
*/
typedef struct attrlist_cursor_kern {
@@ -131,8 +110,6 @@ int xfs_attr_get(struct xfs_da_args *args);
int xfs_attr_set(struct xfs_da_args *args);
int xfs_attr_set_args(struct xfs_da_args *args);
int xfs_attr_remove_args(struct xfs_da_args *args);
-int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
- int flags, struct attrlist_cursor_kern *cursor);
bool xfs_attr_namecheck(const void *name, size_t length);
#endif /* __XFS_ATTR_H__ */
diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index e362fc8..51a688f 100644
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -593,6 +593,26 @@ typedef struct xfs_attrlist_cursor {
__u32 opaque[4];
} xfs_attrlist_cursor_t;
+/*
+ * Define how lists of attribute names are returned to userspace from the
+ * XFS_IOC_ATTRLIST_BY_HANDLE ioctl. struct xfs_attrlist is the header at the
+ * beginning of the returned buffer, and a each entry in al_offset contains the
+ * relative offset of an xfs_attrlist_ent containing the actual entry.
+ *
+ * NOTE: struct xfs_attrlist must match struct attrlist defined in libattr, and
+ * struct xfs_attrlist_ent must match struct attrlist_ent defined in libattr.
+ */
+struct xfs_attrlist {
+ __s32 al_count; /* number of entries in attrlist */
+ __s32 al_more; /* T/F: more attrs (do call again) */
+ __s32 al_offset[1]; /* byte offsets of attrs [var-sized] */
+};
+
+struct xfs_attrlist_ent { /* data from attr_list() */
+ __u32 a_valuelen; /* number bytes in value of attr */
+ char a_name[1]; /* attr name (NULL terminated) */
+};
+
typedef struct xfs_fsop_attrlist_handlereq {
struct xfs_fsop_handlereq hreq; /* handle interface structure */
struct xfs_attrlist_cursor pos; /* opaque cookie, list offset */
--
2.7.4
