debugfs: Add read-only/write-only size_t file ops

[firefly-linux-kernel-4.4.55.git] / fs / debugfs / file.c

diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index f69d42efe4b8bd8c414370e1c3c39d81adc511b4..e8e73aebe6b824b78ac22d419bfd4a432cadef27 100644 (file)
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -352,6 +352,8 @@ static int debugfs_size_t_get(void *data, u64 *val)
 }
 DEFINE_SIMPLE_ATTRIBUTE(fops_size_t, debugfs_size_t_get, debugfs_size_t_set,
                        "%llu\n");      /* %llu and %zu are more or less the same */
+DEFINE_SIMPLE_ATTRIBUTE(fops_size_t_ro, debugfs_size_t_get, NULL, "%llu\n");
+DEFINE_SIMPLE_ATTRIBUTE(fops_size_t_wo, NULL, debugfs_size_t_set, "%llu\n");
 
 /**
  * debugfs_create_size_t - create a debugfs file that is used to read and write an size_t value
@@ -366,7 +368,8 @@ DEFINE_SIMPLE_ATTRIBUTE(fops_size_t, debugfs_size_t_get, debugfs_size_t_set,
 struct dentry *debugfs_create_size_t(const char *name, umode_t mode,
                                     struct dentry *parent, size_t *value)
 {
-       return debugfs_create_file(name, mode, parent, value, &fops_size_t);
+       return debugfs_create_mode(name, mode, parent, value, &fops_size_t,
+                                  &fops_size_t_ro, &fops_size_t_wo);
 }
 EXPORT_SYMBOL_GPL(debugfs_create_size_t);