[Qemu-devel] [V8 PATCH 10/11] virtio-9p: Move file post creation changes to none security model

["M. Mohan Kumar" <mohan@in.ibm.com>]

After creating a file object, its permission and ownership details are updated
as per 9p client's request for both passthrough and none security model.
But with chrooted environment its not required for passthrough security model.
Move all post file creation changes to none security model.

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
---
 hw/9pfs/virtio-9p-local.c |   19 ++++++-------------
 1 files changed, 6 insertions(+), 13 deletions(-)

diff --git a/hw/9pfs/virtio-9p-local.c b/hw/9pfs/virtio-9p-local.c
index cf4792b..1670e33 100644
--- a/hw/9pfs/virtio-9p-local.c
+++ b/hw/9pfs/virtio-9p-local.c
@@ -137,21 +137,14 @@ static int local_set_xattr(const char *path, FsCred *credp)
     return 0;
 }
 
-static int local_post_create_passthrough(FsContext *fs_ctx, const char *path,
+static int local_post_create_none(FsContext *fs_ctx, const char *path,
         FsCred *credp)
 {
+    int retval;
     if (chmod(rpath(fs_ctx, path), credp->fc_mode & 07777) < 0) {
         return -1;
     }
-    if (lchown(rpath(fs_ctx, path), credp->fc_uid, credp->fc_gid) < 0) {
-        /*
-         * If we fail to change ownership and if we are
-         * using security model none. Ignore the error
-         */
-        if (fs_ctx->fs_sm != SM_NONE) {
-            return -1;
-        }
-    }
+    retval = lchown(rpath(fs_ctx, path), credp->fc_uid, credp->fc_gid);
     return 0;
 }
 
@@ -292,7 +285,7 @@ static int local_mknod(FsContext *fs_ctx, const char *path, FsCred *credp)
         if (err == -1) {
             return err;
         }
-        err = local_post_create_passthrough(fs_ctx, path, credp);
+        err = local_post_create_none(fs_ctx, path, credp);
         if (err == -1) {
             serrno = errno;
             goto err_end;
@@ -334,7 +327,7 @@ static int local_mkdir(FsContext *fs_ctx, const char *path, FsCred *credp)
         if (err == -1) {
             return err;
         }
-        err = local_post_create_passthrough(fs_ctx, path, credp);
+        err = local_post_create_none(fs_ctx, path, credp);
         if (err == -1) {
             serrno = errno;
             goto err_end;
@@ -409,7 +402,7 @@ static int local_open2(FsContext *fs_ctx, const char *path, int flags,
         if (fd == -1) {
             return fd;
         }
-        err = local_post_create_passthrough(fs_ctx, path, credp);
+        err = local_post_create_none(fs_ctx, path, credp);
         if (err == -1) {
             serrno = errno;
             goto err_end;
-- 
1.7.3.4