Convert CONFIG_SYS_BOOTCOUNT_SINGLEWORD to Kconfig

[people/ms/u-boot.git] / include / fs.h

diff --git a/include/fs.h b/include/fs.h
index 059a39505d43abb30dcbf66820c60a328e67069f..32fc480135841333015b8628b4cfc889ba5f2ab8 100644 (file)
--- a/include/fs.h
+++ b/include/fs.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier:    GPL-2.0
  */
 #ifndef _FS_H
 #define _FS_H
@@ -23,6 +13,7 @@
 #define FS_TYPE_EXT    2
 #define FS_TYPE_SANDBOX        3
 #define FS_TYPE_UBIFS  4
+#define FS_TYPE_BTRFS  5
 
 /*
  * Tell the fs layer which block device an partition to use for future
@@ -36,6 +27,17 @@
  */
 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
 
+/*
+ * fs_set_blk_dev_with_part - Set current block device + partition
+ *
+ * Similar to fs_set_blk_dev(), but useful for cases where you already
+ * know the blk_desc and part number.
+ *
+ * Returns 0 on success.
+ * Returns non-zero if invalid partition or error accessing the disk.
+ */
+int fs_set_blk_dev_with_part(struct blk_desc *desc, int part);
+
 /*
  * Print the list of files on the partition previously set by fs_set_blk_dev(),
  * in directory "dirname".
@@ -88,6 +90,62 @@ int fs_read(const char *filename, ulong addr, loff_t offset, loff_t len,
 int fs_write(const char *filename, ulong addr, loff_t offset, loff_t len,
             loff_t *actwrite);
 
+/*
+ * Directory entry types, matches the subset of DT_x in posix readdir()
+ * which apply to u-boot.
+ */
+#define FS_DT_DIR  4         /* directory */
+#define FS_DT_REG  8         /* regular file */
+#define FS_DT_LNK  10        /* symbolic link */
+
+/*
+ * A directory entry, returned by fs_readdir().  Returns information
+ * about the file/directory at the current directory entry position.
+ */
+struct fs_dirent {
+       unsigned type;       /* one of FS_DT_x (not a mask) */
+       loff_t size;         /* size in bytes */
+       char name[256];
+};
+
+/* Note: fs_dir_stream should be treated as opaque to the user of fs layer */
+struct fs_dir_stream {
+       /* private to fs. layer: */
+       struct blk_desc *desc;
+       int part;
+};
+
+/*
+ * fs_opendir - Open a directory
+ *
+ * @filename: the path to directory to open
+ * @return a pointer to the directory stream or NULL on error and errno
+ *    set appropriately
+ */
+struct fs_dir_stream *fs_opendir(const char *filename);
+
+/*
+ * fs_readdir - Read the next directory entry in the directory stream.
+ *
+ * Works in an analogous way to posix readdir().  The previously returned
+ * directory entry is no longer valid after calling fs_readdir() again.
+ * After fs_closedir() is called, the returned directory entry is no
+ * longer valid.
+ *
+ * @dirs: the directory stream
+ * @return the next directory entry (only valid until next fs_readdir() or
+ *    fs_closedir() call, do not attempt to free()) or NULL if the end of
+ *    the directory is reached.
+ */
+struct fs_dirent *fs_readdir(struct fs_dir_stream *dirs);
+
+/*
+ * fs_closedir - close a directory stream
+ *
+ * @dirs: the directory stream
+ */
+void fs_closedir(struct fs_dir_stream *dirs);
+
 /*
  * Common implementation for various filesystem commands, optionally limited
  * to a specific filesystem type via the fstype parameter.