Factor out duplicated code to a single helper. More users to come.

Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Signed-off-by: Greg Kurz <groug@kaod.org>

v2: - simplified local_fid_fd()
---
 hw/9pfs/9p-local.c | 23 ++++++++++-------------
 1 file changed, 10 insertions(+), 13 deletions(-)

diff --git a/hw/9pfs/9p-local.c b/hw/9pfs/9p-local.c
index 928523afcc6c..99b9560a528b 100644
--- a/hw/9pfs/9p-local.c
+++ b/hw/9pfs/9p-local.c
@@ -766,16 +766,19 @@ out:
     return err;
 }
 
-static int local_fstat(FsContext *fs_ctx, int fid_type,
-                       V9fsFidOpenState *fs, struct stat *stbuf)
+static int local_fid_fd(int fid_type, V9fsFidOpenState *fs)
 {
-    int err, fd;
-
     if (fid_type == P9_FID_DIR) {
-        fd = dirfd(fs->dir.stream);
+        return dirfd(fs->dir.stream);
     } else {
-        fd = fs->fd;
+        return fs->fd;
     }
+}
+
+static int local_fstat(FsContext *fs_ctx, int fid_type,
+                       V9fsFidOpenState *fs, struct stat *stbuf)
+{
+    int err, fd = local_fid_fd(fid_type, fs);
 
     err = fstat(fd, stbuf);
     if (err) {
@@ -1167,13 +1170,7 @@ out:
 static int local_fsync(FsContext *ctx, int fid_type,
                        V9fsFidOpenState *fs, int datasync)
 {
-    int fd;
-
-    if (fid_type == P9_FID_DIR) {
-        fd = dirfd(fs->dir.stream);
-    } else {
-        fd = fs->fd;
-    }
+    int fd = local_fid_fd(fid_type, fs);
 
     if (datasync) {
         return qemu_fdatasync(fd);
-- 
2.48.1