From: Michael Vrable <mvrable@cs.ucsd.edu>
Date: Tue, 29 Dec 2009 05:53:11 +0000 (-0800)
Subject: Preliminary NFS readdirplus support (not yet entirely to spec).
X-Git-Url: http://git.vrable.net/?p=bluesky.git;a=commitdiff_plain;h=1fddb0453f35dd19cb96d2ef14784f0e31e63564

Preliminary NFS readdirplus support (not yet entirely to spec).
---

diff --git a/nfs3/nfs3.c b/nfs3/nfs3.c
index c668542..70c9a60 100644
--- a/nfs3/nfs3.c
+++ b/nfs3/nfs3.c
@@ -674,6 +674,7 @@ nfsproc3_link_3_svc(link3args *argp, struct svc_req *rqstp)
 gint bluesky_dirent_compare(gconstpointer a, gconstpointer b,
                             gpointer unused);
 
+#define MAX_READDIR_DIRENTS 4
 readdir3res *
 nfsproc3_readdir_3_svc(readdir3args *argp, struct svc_req *rqstp)
 {
@@ -692,7 +693,6 @@ nfsproc3_readdir_3_svc(readdir3args *argp, struct svc_req *rqstp)
     memset(result.readdir3res_u.resok.cookieverf, 0,
            sizeof(result.readdir3res_u.resok.cookieverf));
 
-#define MAX_READDIR_DIRENTS 4
     static entry3 dirents[MAX_READDIR_DIRENTS];
     int count = 0;
 
@@ -726,7 +726,56 @@ nfsproc3_readdirplus_3_svc(readdirplus3args *argp, struct svc_req *rqstp)
 {
     static readdirplus3res result;
 
-    result.status = NFS3ERR_NOTSUPP;
+    BlueSkyInode *dir = lookup_fh(&argp->dir);
+    if (dir == NULL) {
+        result.status = NFS3ERR_STALE;
+        result.readdirplus3res_u.resfail.present = FALSE;
+        return &result;
+    }
+
+    result.status = NFS3_OK;
+    result.readdirplus3res_u.resok.dir_attributes.present = TRUE;
+    encode_fattr3(&result.readdirplus3res_u.resok.dir_attributes.post_op_attr_u.attributes, dir);
+    memset(result.readdirplus3res_u.resok.cookieverf, 0,
+           sizeof(result.readdirplus3res_u.resok.cookieverf));
+
+    static entryplus3 dirents[MAX_READDIR_DIRENTS];
+    static uint64_t fh_bytes[MAX_READDIR_DIRENTS];
+    int count = 0;
+
+    /* TODO: Handle dircount, maxcount arguments from client. */
+
+    BlueSkyDirent start = {NULL, NULL, argp->cookie, 0};
+    GSequenceIter *i = g_sequence_search(dir->dirents, &start,
+                                         bluesky_dirent_compare, NULL);
+
+    while (count < MAX_READDIR_DIRENTS && !g_sequence_iter_is_end(i)) {
+        BlueSkyDirent *d = g_sequence_get(i);
+        BlueSkyInode *inode = bluesky_get_inode(fs, d->inum);
+        if (inode != NULL) {
+            dirents[count].fileid = d->inum;
+            dirents[count].name = d->name;
+            dirents[count].cookie = d->cookie;
+            dirents[count].nextentry = NULL;
+            dirents[count].name_attributes.present = TRUE;
+            encode_fattr3(&dirents[count].name_attributes.post_op_attr_u.attributes, inode);
+            fh_bytes[count] = GUINT64_TO_BE(d->inum);
+            dirents[count].name_handle.present = TRUE;
+            dirents[count].name_handle.post_op_fh3_u.handle.data.data_len = 8;
+            dirents[count].name_handle.post_op_fh3_u.handle.data.data_val
+                = (char *)&fh_bytes[count];
+            if (count > 0)
+                dirents[count - 1].nextentry = &dirents[count];
+            count++;
+        }
+        i = g_sequence_iter_next(i);
+    }
+
+    if (count > 0)
+        result.readdirplus3res_u.resok.reply.entries = &dirents[0];
+    else
+        result.readdirplus3res_u.resok.reply.entries = NULL;
+    result.readdirplus3res_u.resok.reply.eof = g_sequence_iter_is_end(i);
 
     return &result;
 }