>+++ b/fs/unionfs/dirfops.c
>+/* This is not meant to be a generic repositioning function. If you do
>+ * things that aren't supported, then we return EINVAL.
>+ *
>+ * What is allowed:
>+ * (1) seeking to the same position that you are currently at
>+ * This really has no effect, but returns where you are.
>+ * (2) seeking to the end of the file, if you've read everything
>+ * This really has no effect, but returns where you are.
>+ * (3) seeking to the beginning of the file
>+ * This throws out all state, and lets you begin again.
>+ */
>+static loff_t unionfs_dir_llseek(struct file *file, loff_t offset, int origin)
>+{
[...]
>+ /* We let users seek to their current position, but not anywhere else.
>*/
>+ if (!offset) {
[...]
>+ case SEEK_END:
>+ /* Unsupported, because we would break everything. */
>+ err = -EINVAL;
>+ break;
[...]
This SEEK_END implementation clashes with (2).
>+ } else {
[...]
>+ }
>+
>+out:
>+ return err;
>+}
>+
>+/* Trimmed directory options, we shouldn't pass everything down since
>+ * we don't want to operate on partial directories.
>+ */
>+struct file_operations unionfs_dir_fops = {
>+ .llseek = unionfs_dir_llseek,
>+ .read = generic_read_dir,
>+ .readdir = unionfs_readdir,
>+ .unlocked_ioctl = unionfs_ioctl,
>+ .open = unionfs_open,
>+ .release = unionfs_file_release,
>+ .flush = unionfs_flush,
>+};
Prefers
+struct file_operations unionfs_dir_fops = {
+ .llseek = unionfs_dir_llseek,
+ .read = generic_read_dir,
+ .readdir = unionfs_readdir,
+ .unlocked_ioctl = unionfs_ioctl,
+ .open = unionfs_open,
+ .release = unionfs_file_release,
+ .flush = unionfs_flush,
+};
BTW, you could line up other structs too! :)
-`J'
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