fs/erofs: add filesystem commands

Add 'ls' and 'load' commands.

Signed-off-by: Huang Jianan <jnhuang95@gmail.com>

diff --git a/MAINTAINERS b/MAINTAINERS
index c13161f..3e7ae7e 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -813,6 +813,7 @@ EROFS
 M:     Huang Jianan <jnhuang95@gmail.com>
 L:     linux-erofs@lists.ozlabs.org
 S:     Maintained
+F:     cmd/erofs.c
 F:     fs/erofs/
 F:     include/erofs.h
 

diff --git a/cmd/Kconfig b/cmd/Kconfig
index 1ed63fa..9d0e803 100644 (file)
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -2201,6 +2201,12 @@ config CMD_CRAMFS
             cramfsls   - lists files in a cramfs image
             cramfsload - loads a file from a cramfs image
 
+config CMD_EROFS
+       bool "EROFS command support"
+       select FS_EROFS
+       help
+         Support for the EROFS fs
+
 config CMD_EXT2
        bool "ext2 command support"
        select FS_EXT4

diff --git a/cmd/Makefile b/cmd/Makefile
index 0d2b2ee..ede634d 100644 (file)
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -61,6 +61,7 @@ obj-$(CONFIG_CMD_EEPROM) += eeprom.o
 obj-$(CONFIG_EFI) += efi.o
 obj-$(CONFIG_CMD_EFIDEBUG) += efidebug.o
 obj-$(CONFIG_CMD_ELF) += elf.o
+obj-$(CONFIG_CMD_EROFS) += erofs.o
 obj-$(CONFIG_HUSH_PARSER) += exit.o
 obj-$(CONFIG_CMD_EXT4) += ext4.o
 obj-$(CONFIG_CMD_EXT2) += ext2.o

diff --git a/cmd/erofs.c b/cmd/erofs.c
new file mode 100644 (file)
index 0000000..add80b8
--- /dev/null
+++ b/cmd/erofs.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 Huang Jianan <jnhuang95@gmail.com>
+ *
+ * Author: Huang Jianan <jnhuang95@gmail.com>
+ *
+ * erofs.c:    implements EROFS related commands
+ */
+
+#include <command.h>
+#include <fs.h>
+#include <erofs.h>
+
+static int do_erofs_ls(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
+{
+       return do_ls(cmdtp, flag, argc, argv, FS_TYPE_EROFS);
+}
+
+U_BOOT_CMD(erofsls, 4, 1, do_erofs_ls,
+          "List files in directory. Default: root (/).",
+          "<interface> [<dev[:part]>] [directory]\n"
+          "    - list files from 'dev' on 'interface' in 'directory'\n"
+);
+
+static int do_erofs_load(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
+{
+       return do_load(cmdtp, flag, argc, argv, FS_TYPE_EROFS);
+}
+
+U_BOOT_CMD(erofsload, 7, 0, do_erofs_load,
+          "load binary file from a EROFS filesystem",
+          "<interface> [<dev[:part]> [<addr> [<filename> [bytes [pos]]]]]\n"
+          "    - Load binary file 'filename' from 'dev' on 'interface'\n"
+          "      to address 'addr' from EROFS filesystem.\n"
+          "      'pos' gives the file position to start loading from.\n"
+          "      If 'pos' is omitted, 0 is used. 'pos' requires 'bytes'.\n"
+          "      'bytes' gives the size to load. If 'bytes' is 0 or omitted,\n"
+          "      the load stops on end of file.\n"
+          "      If either 'pos' or 'bytes' are not aligned to\n"
+          "      ARCH_DMA_MINALIGN then a misaligned buffer warning will\n"
+          "      be printed and performance will suffer for the load."
+);