fuse: allow ctime flushing to userspace

The patch extends fuse_setattr_in, and extends the flush procedure
(fuse_flush_times()) called on ->write_inode() to send the ctime as well as
mtime.

Signed-off-by: Maxim Patlasov <MPatlasov@parallels.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

3 files changed, 9 insertions, 4 deletions

diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 8c233834591f..e6ba579e2937 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1597,7 +1597,7 @@ static void fuse_setattr_fill(struct fuse_conn *fc, struct fuse_req *req,
 /*
  * Flush inode->i_mtime to the server
  */
-int fuse_flush_mtime(struct inode *inode, struct fuse_file *ff)
+int fuse_flush_times(struct inode *inode, struct fuse_file *ff)
 {
         struct fuse_conn *fc = get_fuse_conn(inode);
         struct fuse_req *req;
@@ -1612,9 +1612,14 @@ int fuse_flush_mtime(struct inode *inode, struct fuse_file *ff)
         memset(&inarg, 0, sizeof(inarg));
         memset(&outarg, 0, sizeof(outarg));
 
-        inarg.valid |= FATTR_MTIME;
+        inarg.valid = FATTR_MTIME;
         inarg.mtime = inode->i_mtime.tv_sec;
         inarg.mtimensec = inode->i_mtime.tv_nsec;
+        if (fc->minor >= 23) {
+                inarg.valid |= FATTR_CTIME;
+                inarg.ctime = inode->i_ctime.tv_sec;
+                inarg.ctimensec = inode->i_ctime.tv_nsec;
+        }
         if (ff) {
                 inarg.valid |= FATTR_FH;
                 inarg.fh = ff->fh;
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index d228c3962ffd..96d513e01a5d 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1691,7 +1691,7 @@ int fuse_write_inode(struct inode *inode, struct writeback_control *wbc)
         int err;
 
         ff = __fuse_write_file_get(fc, fi);
-        err = fuse_flush_mtime(inode, ff);
+        err = fuse_flush_times(inode, ff);
         if (ff)
                 fuse_file_put(ff, 0);
 
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index d2f10054b9a1..40677e33504f 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -889,7 +889,7 @@ int fuse_dev_release(struct inode *inode, struct file *file);
 
 bool fuse_write_update_size(struct inode *inode, loff_t pos);
 
-int fuse_flush_mtime(struct inode *inode, struct fuse_file *ff);
+int fuse_flush_times(struct inode *inode, struct fuse_file *ff);
 int fuse_write_inode(struct inode *inode, struct writeback_control *wbc);
 
 int fuse_do_setattr(struct inode *inode, struct iattr *attr,