LU-532 mdt: improve xattr ctime warning message

[fs/lustre-release.git] / lustre / mdt / mdt_xattr.c

diff --git a/lustre/mdt/mdt_xattr.c b/lustre/mdt/mdt_xattr.c
index 561a395..f3b5537 100644 (file)
--- a/lustre/mdt/mdt_xattr.c
+++ b/lustre/mdt/mdt_xattr.c
@@ -26,7 +26,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  */
 /*
@@ -48,13 +48,7 @@
 #endif
 #define DEBUG_SUBSYSTEM S_MDS
 
-/* prerequisite for linux/xattr.h */
-#include <linux/types.h>
-/* prerequisite for linux/xattr.h */
-#include <linux/fs.h>
-/* XATTR_{REPLACE,CREATE} */
-#include <linux/xattr.h>
-
+#include <lustre_acl.h>
 #include "mdt_internal.h"
 
 
@@ -68,7 +62,7 @@ static int mdt_getxattr_pack_reply(struct mdt_thread_info * info)
         static const char       user_string[] = "user.";
         int                     size, rc;
         ENTRY;
-        
+
         if (OBD_FAIL_CHECK(OBD_FAIL_MDS_GETXATTR_PACK))
                 RETURN(-ENOMEM);
 
@@ -81,7 +75,7 @@ static int mdt_getxattr_pack_reply(struct mdt_thread_info * info)
                 if (!(req->rq_export->exp_connect_flags & OBD_CONNECT_XATTR) &&
                     !strncmp(xattr_name, user_string, sizeof(user_string) - 1))
                         RETURN(-EOPNOTSUPP);
-                
+
                 size = mo_xattr_get(info->mti_env,
                                     mdt_object_child(info->mti_object),
                                     &LU_BUF_NULL, xattr_name);
@@ -221,6 +215,7 @@ int mdt_getxattr(struct mdt_thread_info *info)
         EXIT;
 out:
         if (rc >= 0) {
+                mdt_counter_incr(req->rq_export, LPROC_MDT_GETXATTR);
                 repbody->eadatasize = rc;
                 rc = 0;
         }
@@ -244,7 +239,7 @@ static int mdt_rmtlsetfacl(struct mdt_thread_info *info,
         rc = lustre_ext_acl_xattr_id2server(uc, med->med_idmap, header);
         if (rc)
                 RETURN(rc);
- 
+
         rc = mo_xattr_get(info->mti_env, next, &LU_BUF_NULL, xattr_name);
         if (rc == -ENODATA)
                 rc = 0;
@@ -253,7 +248,7 @@ static int mdt_rmtlsetfacl(struct mdt_thread_info *info,
 
         buf->lb_len = rc;
         if (buf->lb_len > 0) {
-                OBD_ALLOC(buf->lb_buf, buf->lb_len);
+                OBD_ALLOC_LARGE(buf->lb_buf, buf->lb_len);
                 if (unlikely(buf->lb_buf == NULL))
                         RETURN(-ENOMEM);
 
@@ -271,7 +266,7 @@ static int mdt_rmtlsetfacl(struct mdt_thread_info *info,
 
 _out:
         if (rc <= 0 && buf->lb_buf != NULL)
-                OBD_FREE(buf->lb_buf, buf->lb_len);
+                OBD_FREE_LARGE(buf->lb_buf, buf->lb_len);
         return rc;
 }
 
@@ -287,7 +282,7 @@ int mdt_reint_setxattr(struct mdt_thread_info *info,
         struct mdt_reint_record *rr   = &info->mti_rr;
         struct md_attr          *ma = &info->mti_attr;
         struct lu_attr          *attr = &info->mti_attr.ma_attr;
-        struct mdt_object       *obj; 
+        struct mdt_object       *obj;
         struct md_object        *child;
         __u64                    valid = attr->la_valid;
         const char              *xattr_name;
@@ -330,33 +325,55 @@ int mdt_reint_setxattr(struct mdt_thread_info *info,
 
         if (strncmp(xattr_name, XATTR_USER_PREFIX,
                     sizeof(XATTR_USER_PREFIX) - 1) == 0) {
+                if (!(req->rq_export->exp_connect_flags & OBD_CONNECT_XATTR))
+                        GOTO(out, rc = -EOPNOTSUPP);
                 if (strcmp(xattr_name, XATTR_NAME_LOV) == 0)
                         GOTO(out, rc = -EACCES);
                 if (strcmp(xattr_name, XATTR_NAME_LMA) == 0)
                         GOTO(out, rc = 0);
                 if (strcmp(xattr_name, XATTR_NAME_LINK) == 0)
                         GOTO(out, rc = 0);
-        }
+        } else if ((valid & OBD_MD_FLXATTR) &&
+                   (strncmp(xattr_name, XATTR_NAME_ACL_ACCESS,
+                            sizeof(XATTR_NAME_ACL_ACCESS) - 1) == 0 ||
+                    strncmp(xattr_name, XATTR_NAME_ACL_DEFAULT,
+                            sizeof(XATTR_NAME_ACL_DEFAULT) - 1) == 0)) {
+                /* currently lustre limit acl access size */
+                xattr_len = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
 
-        if (!(req->rq_export->exp_connect_flags & OBD_CONNECT_XATTR) &&
-            (strncmp(xattr_name, XATTR_USER_PREFIX,
-                     sizeof(XATTR_USER_PREFIX) - 1) == 0)) {
-                GOTO(out, rc = -EOPNOTSUPP);
+                if (xattr_len > LUSTRE_POSIX_ACL_MAX_SIZE)
+                        GOTO(out, -ERANGE);
         }
 
         lockpart = MDS_INODELOCK_UPDATE;
+        /* Revoke all clients' lookup lock, since the access
+         * permissions for this inode is changed when ACL_ACCESS is
+         * set. This isn't needed for ACL_DEFAULT, since that does
+         * not change the access permissions of this inode, nor any
+         * other existing inodes. It is setting the ACLs inherited
+         * by new directories/files at create time. */
         if (!strcmp(xattr_name, XATTR_NAME_ACL_ACCESS))
                 lockpart |= MDS_INODELOCK_LOOKUP;
 
         lh = &info->mti_lh[MDT_LH_PARENT];
-        mdt_lock_reg_init(lh, LCK_PW);
+        /* ACLs were sent to clients under LCK_CR locks, so taking LCK_EX
+         * to cancel them. */
+        mdt_lock_reg_init(lh, LCK_EX);
         obj = mdt_object_find_lock(info, rr->rr_fid1, lh, lockpart);
         if (IS_ERR(obj))
                 GOTO(out, rc =  PTR_ERR(obj));
 
+        info->mti_mos = obj;
+        rc = mdt_version_get_check_save(info, obj, 0);
+        if (rc)
+                GOTO(out_unlock, rc);
+
         if (unlikely(!(valid & OBD_MD_FLCTIME))) {
-                CWARN("client miss to set OBD_MD_FLCTIME when "
-                      "setxattr: [object "DFID"] [valid %llu]\n",
+                /* This isn't strictly an error, but all current clients
+                 * should set OBD_MD_FLCTIME when setting attributes. */
+                CWARN("%s: client miss to set OBD_MD_FLCTIME when "
+                      "setxattr %s: [object "DFID"] [valid "LPU64"]\n",
+                      info->mti_exp->exp_obd->obd_name, xattr_name,
                       PFID(rr->rr_fid1), valid);
                 attr->la_ctime = cfs_time_current_sec();
         }
@@ -419,6 +436,9 @@ int mdt_reint_setxattr(struct mdt_thread_info *info,
                 CDEBUG(D_INFO, "valid bits: "LPX64"\n", valid);
                 rc = -EINVAL;
         }
+        if (rc == 0)
+                mdt_counter_incr(req->rq_export, LPROC_MDT_SETXATTR);
+
         EXIT;
 out_unlock:
         mdt_object_unlock_put(info, obj, lh, rc);