LU-11868 osd: Set max ea size to XATTR_SIZE_MAX

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

diff --git a/lustre/mdt/mdt_lib.c b/lustre/mdt/mdt_lib.c
index 428abef..4cda802 100644 (file)
--- a/lustre/mdt/mdt_lib.c
+++ b/lustre/mdt/mdt_lib.c
@@ -1162,6 +1162,7 @@ static int mdt_setattr_unpack(struct mdt_thread_info *info)
                 rr->rr_eadata = req_capsule_client_get(pill, &RMF_EADATA);
                 rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
                                                         RCL_CLIENT);
+
                if (rr->rr_eadatalen > 0) {
                        const struct lmv_user_md        *lum;
 
@@ -1503,6 +1504,7 @@ static int mdt_migrate_unpack(struct mdt_thread_info *info)
                        rr->rr_eadatalen = req_capsule_get_size(pill,
                                                                &RMF_EADATA,
                                                                RCL_CLIENT);
+
                        if (rr->rr_eadatalen > 0) {
                                rr->rr_eadata = req_capsule_client_get(pill,
                                                                &RMF_EADATA);
@@ -1591,6 +1593,7 @@ static int mdt_open_unpack(struct mdt_thread_info *info)
         if (req_capsule_field_present(pill, &RMF_EADATA, RCL_CLIENT)) {
                 rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
                                                         RCL_CLIENT);
+
                 if (rr->rr_eadatalen > 0) {
                         rr->rr_eadata = req_capsule_client_get(pill,
                                                                &RMF_EADATA);
@@ -1662,6 +1665,10 @@ static int mdt_setxattr_unpack(struct mdt_thread_info *info)
         if (req_capsule_field_present(pill, &RMF_EADATA, RCL_CLIENT)) {
                 rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
                                                         RCL_CLIENT);
+
+               if (rr->rr_eadatalen > info->mti_mdt->mdt_max_ea_size)
+                       RETURN(-E2BIG);
+
                 if (rr->rr_eadatalen > 0) {
                         rr->rr_eadata = req_capsule_client_get(pill,
                                                                &RMF_EADATA);