libcephfs: add ceph_ll_listxattr

Signed-off-by: Andrey Kuznetsov <Andrey_Kuznetsov@epam.com>

2 files changed, 25 insertions, 0 deletions

diff --git a/src/include/cephfs/libcephfs.h b/src/include/cephfs/libcephfs.h
index 4ba63069064..c45c19d8c96 100644
--- a/src/include/cephfs/libcephfs.h
+++ b/src/include/cephfs/libcephfs.h
@@ -1245,12 +1245,26 @@ int64_t ceph_ll_writev(struct ceph_mount_info *cmount, struct Fh *fh,
 		       const struct iovec *iov, int iovcnt, int64_t off);
 int ceph_ll_close(struct ceph_mount_info *cmount, struct Fh* filehandle);
 int ceph_ll_iclose(struct ceph_mount_info *cmount, struct Inode *in, int mode);
+/**
+ * Get xattr value by xattr name.
+ *
+ * @param cmount the ceph mount handle to use.
+ * @param in file handle
+ * @param name name of attribute
+ * @param value pointer to begin buffer
+ * @param size buffer size
+ * @param uid user ID
+ * @param gid group ID
+ * @returns size of returned buffer. Negative number in error case
+ */
 int ceph_ll_getxattr(struct ceph_mount_info *cmount, struct Inode *in,
 		     const char *name, void *value, size_t size, int uid,
 		     int gid);
 int ceph_ll_setxattr(struct ceph_mount_info *cmount, struct Inode *in,
 		     const char *name, const void *value, size_t size,
 		     int flags, int uid, int gid);
+int ceph_ll_listxattr(struct ceph_mount_info *cmount, struct Inode *in,
+                      char *list, size_t buf_size, size_t *list_size, int uid, int gid);
 int ceph_ll_removexattr(struct ceph_mount_info *cmount, struct Inode *in,
 			const char *name, int uid, int gid);
 int ceph_ll_create(struct ceph_mount_info *cmount, struct Inode *parent,
diff --git a/src/libcephfs.cc b/src/libcephfs.cc
index 885ee02a288..97a51aec3c6 100644
--- a/src/libcephfs.cc
+++ b/src/libcephfs.cc
@@ -1403,6 +1403,17 @@ extern "C" int ceph_ll_getxattr(class ceph_mount_info *cmount,
 {
   return (cmount->get_client()->ll_getxattr(in, name, value, size, uid, gid));
 }
+extern "C" int ceph_ll_listxattr(struct ceph_mount_info *cmount,
+                              Inode *in, char *list,
+                              size_t buf_size, size_t *list_size, int uid, int gid)
+{
+  int res = cmount->get_client()->ll_listxattr(in, list, buf_size, uid, gid);
+  if (res >= 0) {
+    *list_size = (size_t)res;
+    return 0;
+  }
+  return res;
+}
 
 extern "C" int ceph_ll_setxattr(class ceph_mount_info *cmount,
 				Inode *in, const char *name,