[O_TMPFILE] it's still short a few helpers, but infrastructure should be OK now...

[~andy/linux] / mm / shmem.c

diff --git a/mm/shmem.c b/mm/shmem.c
index 5e6a8422658b832921196ca4908e7cc6148eb84a..f887358dabc557e69618d360a61c8dbb51738b8d 100644 (file)
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1965,6 +1965,37 @@ shmem_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
        return error;
 }
 
+static int
+shmem_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
+{
+       struct inode *inode;
+       int error = -ENOSPC;
+
+       inode = shmem_get_inode(dir->i_sb, dir, mode, 0, VM_NORESERVE);
+       if (inode) {
+               error = security_inode_init_security(inode, dir,
+                                                    NULL,
+                                                    shmem_initxattrs, NULL);
+               if (error) {
+                       if (error != -EOPNOTSUPP) {
+                               iput(inode);
+                               return error;
+                       }
+               }
+#ifdef CONFIG_TMPFS_POSIX_ACL
+               error = generic_acl_init(inode, dir);
+               if (error) {
+                       iput(inode);
+                       return error;
+               }
+#else
+               error = 0;
+#endif
+               d_tmpfile(dentry, inode);
+       }
+       return error;
+}
+
 static int shmem_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 {
        int error;
@@ -2723,6 +2754,7 @@ static const struct inode_operations shmem_dir_inode_operations = {
        .rmdir          = shmem_rmdir,
        .mknod          = shmem_mknod,
        .rename         = shmem_rename,
+       .tmpfile        = shmem_tmpfile,
 #endif
 #ifdef CONFIG_TMPFS_XATTR
        .setxattr       = shmem_setxattr,