introduce ->iterate(), ctx->pos, dir_emit()

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 75327e6dc2d8bb92b400f4b79764378d31042cd1..3fe45fa4b78cc7647f8167fdec25743fdc651807 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1508,7 +1508,15 @@ int fiemap_check_flags(struct fiemap_extent_info *fieinfo, u32 fs_flags);
 typedef int (*filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
 struct dir_context {
        filldir_t actor;
+       loff_t pos;
 };
+
+static inline bool dir_emit(struct dir_context *ctx,
+                           const char *name, int namelen,
+                           u64 ino, unsigned type)
+{
+       return ctx->actor(ctx, name, namelen, ctx->pos, ino, type) == 0;
+}
 struct block_device_operations;
 
 /* These macros are for out of kernel modules to test that
@@ -1525,6 +1533,7 @@ struct file_operations {
        ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
        ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
        int (*readdir) (struct file *, void *, filldir_t);
+       int (*iterate) (struct file *, struct dir_context *);
        unsigned int (*poll) (struct file *, struct poll_table_struct *);
        long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
        long (*compat_ioctl) (struct file *, unsigned int, unsigned long);