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authorStephen Warren <swarren@nvidia.com>2012-10-22 06:43:51 +0000
committerTom Rini <trini@ti.com>2012-10-29 14:21:20 -0700
commit045fa1e1142552799ad3203e9e0bc22a11e866ea (patch)
tree038b783c8efac14c0caffa128f37b77a48c9f407 /include
parent03e2ecf6b83e43803f7eed9547d0973b7eb1c8fc (diff)
downloadu-boot-linaro-stable-045fa1e1142552799ad3203e9e0bc22a11e866ea.tar.gz
fs: add filesystem switch libary, implement ls and fsload commands
Implement "ls" and "fsload" commands that act like {fat,ext2}{ls,load}, and transparently handle either file-system. This scheme could easily be extended to other filesystem types; I only didn't do it for zfs because I don't have any filesystems of that type to test with. Replace the implementation of {fat,ext[24]}{ls,load} with this new code too. Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'include')
-rw-r--r--include/ext_common.h3
-rw-r--r--include/fs.h65
2 files changed, 65 insertions, 3 deletions
diff --git a/include/ext_common.h b/include/ext_common.h
index ce73857f8..86373a6e5 100644
--- a/include/ext_common.h
+++ b/include/ext_common.h
@@ -195,7 +195,4 @@ int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,
int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]);
int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[]);
-int do_ext_load(cmd_tbl_t *cmdtp, int flag, int argc,
- char *const argv[]);
-int do_ext_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]);
#endif
diff --git a/include/fs.h b/include/fs.h
new file mode 100644
index 000000000..f396d8492
--- /dev/null
+++ b/include/fs.h
@@ -0,0 +1,65 @@
+/*
+ * 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/>.
+ */
+#ifndef _FS_H
+#define _FS_H
+
+#include <common.h>
+
+#define FS_TYPE_ANY 0
+#define FS_TYPE_FAT 1
+#define FS_TYPE_EXT 2
+
+/*
+ * Tell the fs layer which block device an partition to use for future
+ * commands. This also internally identifies the filesystem that is present
+ * within the partition. The identification process may be limited to a
+ * specific filesystem type by passing FS_* in the fstype parameter.
+ *
+ * Returns 0 on success.
+ * Returns non-zero if there is an error accessing the disk or partition, or
+ * no known filesystem type could be recognized on it.
+ */
+int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
+
+/*
+ * Print the list of files on the partition previously set by fs_set_blk_dev(),
+ * in directory "dirname".
+ *
+ * Returns 0 on success. Returns non-zero on error.
+ */
+int fs_ls(const char *dirname);
+
+/*
+ * Read file "filename" from the partition previously set by fs_set_blk_dev(),
+ * to address "addr", starting at byte offset "offset", and reading "len"
+ * bytes. "offset" may be 0 to read from the start of the file. "len" may be
+ * 0 to read the entire file. Note that not all filesystem types support
+ * either/both offset!=0 or len!=0.
+ *
+ * Returns number of bytes read on success. Returns <= 0 on error.
+ */
+int fs_read(const char *filename, ulong addr, int offset, int len);
+
+/*
+ * Common implementation for various filesystem commands, optionally limited
+ * to a specific filesystem type via the fstype parameter.
+ */
+int do_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+ int fstype);
+int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+ int fstype);
+
+#endif /* _FS_H */