default statfs

3 files changed, 27 insertions, 8 deletions

diff --git a/ChangeLog b/ChangeLog
index d0334cd..32a32ae 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2004-03-25  Miklos Szeredi <mszeredi@inf.bme.hu>
+
+	* If filesystem doesn't define a statfs operation, then an
+	all-zero default statfs is returned instead of ENOSYS
+
 2004-03-24  Miklos Szeredi <mszeredi@inf.bme.hu>
 
 	* Add FS_BINARY_MOUNTDATA filesystem flag for kernels > 2.6.4
diff --git a/lib/fuse.c b/lib/fuse.c
index 27e331a..2ca30bb 100644
--- a/lib/fuse.c
+++ b/lib/fuse.c
@@ -914,6 +914,13 @@ static void do_write(struct fuse *f, struct fuse_in_header *in,
     send_reply(f, in, res, NULL, 0);
 }
 
+static int default_statfs(struct statfs *buf)
+{
+    buf->f_namelen = 255;
+    buf->f_bsize = 512;
+    return 0;
+}
+
 static void convert_statfs(struct statfs *statfs, struct fuse_kstatfs *kstatfs)
 {
     kstatfs->bsize	= statfs->f_bsize;
@@ -931,14 +938,14 @@ static void do_statfs(struct fuse *f, struct fuse_in_header *in)
     struct fuse_statfs_out arg;
     struct statfs buf;
 
-    res = -ENOSYS;
-    if(f->op.statfs) {
+    memset(&buf, 0, sizeof(struct statfs));
+    if(f->op.statfs)
         res = f->op.statfs("/", &buf);
-        if(res == 0) {
-            memset(&arg, 0, sizeof(struct fuse_statfs_out));
-            convert_statfs(&buf, &arg.st);
-        }
-    }
+    else
+        res = default_statfs(&buf);
+
+    if(res == 0)
+        convert_statfs(&buf, &arg.st);
 
     send_reply(f, in, res, &arg, sizeof(arg));
 }
diff --git a/lufis/lufis.c b/lufis/lufis.c
index 38bc60a..f91c1e0 100644
--- a/lufis/lufis.c
+++ b/lufis/lufis.c
@@ -551,6 +551,13 @@ static int lu_release(const char *path, int flags)
     return 0;
 }
 
+static int lu_default_statfs(struct statfs *buf)
+{
+    buf->f_namelen = 255;
+    buf->f_bsize = 512;
+    return 0;
+}
+
 #if FUSE_MAJOR_VERSION < 2
 static int lu_statfs(struct fuse_statfs *stbuf)
 #else
@@ -560,7 +567,7 @@ static int lu_statfs(const char *path, struct statfs *stbuf)
     struct lufs_sbattr_ sbattr;
 
     if(!lu_fops.statfs)
-        return -ENOSYS;
+        return lu_default_statfs(stbuf);
 
     memset(&sbattr, 0, sizeof(sbattr));
     if(lu_fops.statfs(lu_context, &sbattr) < 0)