From: adilger <adilger>
Date: Mon, 22 Jul 2002 18:35:19 +0000 (+0000)
Subject: Add beginning of symlink support.  Not totally functional yet, but not totally
X-Git-Tag: v1_7_100~5253
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=3c659fe3b17f58a74cf669e04ca1d8f3f6b8e3fc;p=fs%2Flustre-release.git

Add beginning of symlink support.  Not totally functional yet, but not totally
broken either.
---

diff --git a/lustre/ldlm/ldlm_lock.c b/lustre/ldlm/ldlm_lock.c
index 9b02d18..75c3cf3 100644
--- a/lustre/ldlm/ldlm_lock.c
+++ b/lustre/ldlm/ldlm_lock.c
@@ -283,16 +283,17 @@ static int ldlm_intent_policy(struct ldlm_lock *lock, void *req_cookie,
                          * a file and its obdo */
                 case IT_CREAT:
                 case IT_CREAT|IT_OPEN:
+                case IT_LINK:
+                case IT_LOOKUP:
                 case IT_MKDIR:
-                case IT_SYMLINK:
                 case IT_MKNOD:
-                case IT_LINK:
                 case IT_OPEN:
+                case IT_READLINK:
                 case IT_RENAME:
+                case IT_RMDIR:
                 case IT_SETATTR:
-                case IT_LOOKUP:
+                case IT_SYMLINK:
                 case IT_UNLINK:
-                case IT_RMDIR:
                         bufcount = 3;
                         break;
                 case IT_RENAME2:
@@ -316,13 +317,13 @@ static int ldlm_intent_policy(struct ldlm_lock *lock, void *req_cookie,
                 switch (it->opc) {
                 case IT_CREAT:
                 case IT_CREAT|IT_OPEN:
+                case IT_LINK:
                 case IT_MKDIR:
-                case IT_SYMLINK:
                 case IT_MKNOD:
-                case IT_LINK:
-                case IT_UNLINK:
-                case IT_RMDIR:
                 case IT_RENAME2:
+                case IT_RMDIR:
+                case IT_SYMLINK:
+                case IT_UNLINK:
                         rc = mds_reint_p(2, req);
                         if (rc || req->rq_status != 0) {
                                 rep->lock_policy_res2 = req->rq_status;
@@ -330,11 +331,12 @@ static int ldlm_intent_policy(struct ldlm_lock *lock, void *req_cookie,
                         }
                         break;
                 case IT_GETATTR:
+                case IT_LOOKUP:
+                case IT_OPEN:
                 case IT_READDIR:
+                case IT_READLINK:
                 case IT_RENAME:
-                case IT_OPEN:
                 case IT_SETATTR:
-                case IT_LOOKUP:
                         rc = mds_getattr_name_p(2, req);
                         /* FIXME: we need to sit down and decide on who should
                          * set req->rq_status, who should return negative and
@@ -352,7 +354,7 @@ static int ldlm_intent_policy(struct ldlm_lock *lock, void *req_cookie,
                         LBUG();
                 }
 
-                if (it->opc == IT_UNLINK || it->opc == IT_RMDIR || 
+                if (it->opc == IT_UNLINK || it->opc == IT_RMDIR ||
                     it->opc == IT_RENAME || it->opc == IT_RENAME2)
                         RETURN(ELDLM_LOCK_ABORTED);
 
diff --git a/lustre/llite/namei.c b/lustre/llite/namei.c
index a14fd5d..a5d3435 100644
--- a/lustre/llite/namei.c
+++ b/lustre/llite/namei.c
@@ -104,7 +104,7 @@ int ll_lock(struct inode *dir, struct dentry *dentry,
                           IT_MKNOD)))
                 lock_mode = LCK_PW;
         else if (it->it_op & (IT_READDIR | IT_GETATTR | IT_OPEN | IT_UNLINK |
-                              IT_RMDIR | IT_RENAME | IT_RENAME2))
+                              IT_RMDIR | IT_RENAME | IT_RENAME2 | IT_READLINK))
                 lock_mode = LCK_PR;
         else if (it->it_op & IT_LOOKUP)
                 lock_mode = LCK_CR;
@@ -444,13 +444,18 @@ static int ll_symlink(struct inode *dir, struct dentry *dentry,
 
         oinfo = ll_i2info(inode);
 
+        if (dentry->d_it->it_disposition) {
+                d_instantiate(dentry, inode);
+                return 0;
+        }
+
         OBD_ALLOC(oinfo->lli_symlink_name, l + 1);
+        if (!oinfo->lli_symlink_name)
+                RETURN(-ENOMEM);
+
         memcpy(oinfo->lli_symlink_name, symname, l + 1);
         inode->i_size = l;
 
-        ext2_inc_count(inode);
-        atomic_inc(&inode->i_count);
-
         return ext2_add_nondir(dentry, inode);
 }