Begin adding write support.

[bluesky.git] / nfs3 / nfs3.c

diff --git a/nfs3/nfs3.c b/nfs3/nfs3.c
index aaf23b4..90f62d7 100644 (file)
--- a/nfs3/nfs3.c
+++ b/nfs3/nfs3.c
@@ -198,8 +198,33 @@ write3res *
 nfsproc3_write_3_svc(write3args *argp, struct svc_req *rqstp)
 {
     static write3res result;
+    struct wcc_data wcc;
+    memset(&wcc, 0, sizeof(wcc));
 
-    result.status = NFS3ERR_NOTSUPP;
+    BlueSkyInode *inode = lookup_fh(&argp->file);
+    if (inode == NULL) {
+        result.status = NFS3ERR_STALE;
+        result.write3res_u.resfail = wcc;
+        return &result;
+    }
+
+    encode_pre_wcc(&wcc, inode);
+    if (inode->type != BLUESKY_REGULAR) {
+        result.status = NFS3ERR_INVAL;
+        result.write3res_u.resfail = wcc;
+        return &result;
+    }
+
+    uint64_t lastbyte = argp->offset + argp->count;
+    if (lastbyte > inode->size) {
+        bluesky_file_truncate(inode, lastbyte);
+    }
+    inode->change_count++;
+
+    encode_fattr3(&wcc.after.post_op_attr_u.attributes, inode);
+    result.write3res_u.resok.file_wcc = wcc;
+    result.write3res_u.resok.count = argp->count;
+    result.write3res_u.resok.committed = FILE_SYNC;
 
     return &result;
 }