Patchwork [U-Boot,09/11] DM: use new blockdev API in reiserfs

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Submitter Pavel Herrmann
Date Sept. 20, 2012, 7:37 p.m.
Message ID <1348169867-2917-10-git-send-email-morpheus.ibis@gmail.com>
Download mbox | patch
Permalink /patch/185456/
State Superseded
Delegated to: Marek Vasut
Headers show

Comments

Pavel Herrmann - Sept. 20, 2012, 7:37 p.m.
cmd_reiserdm.c is a copy of cmd_reiser.c with just trivial changes, but those
touch large portion of the lines due to different number of parameters (old API
has a separate parameter for interface and for disk number, new API has this as
one)

Signed-off-by: Pavel Herrmann <morpheus.ibis@gmail.com>
---
 common/Makefile       |   4 ++
 common/cmd_reiserdm.c | 193 ++++++++++++++++++++++++++++++++++++++++++++++++++
 fs/reiserfs/Makefile  |   8 ++-
 fs/reiserfs/dev_dm.c  | 104 +++++++++++++++++++++++++++
 include/reiserfs.h    |   8 ++-
 5 files changed, 315 insertions(+), 2 deletions(-)
 create mode 100644 common/cmd_reiserdm.c
 create mode 100644 fs/reiserfs/dev_dm.c

Patch

diff --git a/common/Makefile b/common/Makefile
index 22f9234..d83c66e 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -142,7 +142,11 @@  COBJS-y += cmd_pcmcia.o
 COBJS-$(CONFIG_CMD_PORTIO) += cmd_portio.o
 COBJS-$(CONFIG_CMD_PXE) += cmd_pxe.o
 COBJS-$(CONFIG_CMD_REGINFO) += cmd_reginfo.o
+ifdef CONFIG_DM
+COBJS-$(CONFIG_CMD_REISER) += cmd_reiserdm.o
+else
 COBJS-$(CONFIG_CMD_REISER) += cmd_reiser.o
+endif
 COBJS-$(CONFIG_CMD_SATA) += cmd_sata.o
 COBJS-$(CONFIG_CMD_SF) += cmd_sf.o
 COBJS-$(CONFIG_CMD_SCSI) += cmd_scsi.o
diff --git a/common/cmd_reiserdm.c b/common/cmd_reiserdm.c
new file mode 100644
index 0000000..ed16563
--- /dev/null
+++ b/common/cmd_reiserdm.c
@@ -0,0 +1,193 @@ 
+/*
+ * (C) Copyright 2003 - 2004
+ * Sysgo Real-Time Solutions, AG <www.elinos.com>
+ * Pavel Bartusek <pba@sysgo.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+/*
+ * Reiserfs support
+ */
+#include <common.h>
+#include <config.h>
+#include <command.h>
+#include <image.h>
+#include <linux/ctype.h>
+#include <asm/byteorder.h>
+#include <reiserfs.h>
+#include <dm/structures.h>
+#include <dm/blockdev.h>
+
+/* #define	REISER_DEBUG */
+
+#ifdef	REISER_DEBUG
+#define	PRINTF(fmt, args...)	printf(fmt, ##args)
+#else
+#define PRINTF(fmt, args...)
+#endif
+
+int do_reiserls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	char *filename = "/";
+	int part_length;
+	struct instance *bdev;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	bdev = get_blockdev_by_name(argv[1]);
+	if (!bdev) {
+		printf("\n** Block device %s not supported\n", argv[1]);
+		return 1;
+	}
+
+	if (argc == 3)
+		filename = argv[2];
+
+	PRINTF("Using device %s, directory: %s\n", argv[1], filename);
+
+	part_length = reiserfs_set_blk_dev(bdev);
+	if (part_length == 0) {
+		printf("** Bad partition - %s **\n",  argv[1]);
+		return 1;
+	}
+
+	if (!reiserfs_mount(part_length)) {
+		printf("** Bad Reiserfs partition or disk - %s **\n",  argv[1]);
+		return 1;
+	}
+
+	if (reiserfs_ls(filename)) {
+		printf("** Error reiserfs_ls() **\n");
+		return 1;
+	};
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	reiserls,	3,	1,	do_reiserls,
+	"list files in a directory (default /)",
+	"<dev[:part]> [directory]\n"
+	"    - list files from 'dev' on 'interface' in a 'directory'"
+);
+
+/******************************************************************************
+ * Reiserfs boot command intepreter. Derived from diskboot
+ */
+int do_reiserload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	char *filename = NULL;
+	ulong addr = 0, part_length, filelen;
+	char buf[12];
+	unsigned long count;
+	char *addr_str;
+	struct instance *bdev;
+
+	switch (argc) {
+	case 2:
+		addr_str = getenv("loadaddr");
+		if (addr_str != NULL)
+			addr = simple_strtoul(addr_str, NULL, 16);
+		else
+			addr = CONFIG_SYS_LOAD_ADDR;
+		filename = getenv("bootfile");
+		count = 0;
+		break;
+	case 3:
+		addr = simple_strtoul(argv[2], NULL, 16);
+		filename = getenv("bootfile");
+		count = 0;
+		break;
+	case 4:
+		addr = simple_strtoul(argv[2], NULL, 16);
+		filename = argv[3];
+		count = 0;
+		break;
+	case 5:
+		addr = simple_strtoul(argv[2], NULL, 16);
+		filename = argv[3];
+		count = simple_strtoul(argv[4], NULL, 16);
+		break;
+
+	default:
+		return CMD_RET_USAGE;
+	}
+
+	if (!filename) {
+		puts("\n** No boot file defined **\n");
+		return 1;
+	}
+
+	bdev = get_blockdev_by_name(argv[1]);
+	if (!bdev) {
+		printf("\n** Block device %s not supported\n", argv[1]);
+		return 1;
+	}
+
+	PRINTF("Using device %s\n", argv[1]);
+
+	PRINTF("\nLoading from block device %s, File:%s\n",
+		argv[1], filename);
+
+
+	part_length = reiserfs_set_blk_dev(bdev);
+	if (part_length == 0) {
+		printf("** Bad partition - %s **\n", argv[1]);
+		return 1;
+	}
+
+	if (!reiserfs_mount(part_length)) {
+		printf("** Bad Reiserfs partition or disk - %s **\n", argv[1]);
+		return 1;
+	}
+
+	filelen = reiserfs_open(filename);
+	if (filelen < 0) {
+		printf("** File not found %s\n", filename);
+		return 1;
+	}
+	if ((count < filelen) && (count != 0))
+		filelen = count;
+
+	if (reiserfs_read((char *)addr, filelen) != filelen) {
+		printf("\n** Unable to read \"%s\" from %s **\n", filename,
+			argv[1]);
+		return 1;
+	}
+
+	/* Loading ok, update default load address */
+	load_addr = addr;
+
+	printf("\n%ld bytes read\n", filelen);
+	sprintf(buf, "%lX", filelen);
+	setenv("filesize", buf);
+
+	return filelen;
+}
+
+U_BOOT_CMD(
+	reiserload,	5,	0,	do_reiserload,
+	"load binary file from a Reiser filesystem",
+	"<dev[:part]> [addr] [filename] [bytes]\n"
+	"    - load binary file 'filename' from 'dev' on 'interface'\n"
+	"      to address 'addr' from dos filesystem"
+);
diff --git a/fs/reiserfs/Makefile b/fs/reiserfs/Makefile
index 495759c..bb30101 100644
--- a/fs/reiserfs/Makefile
+++ b/fs/reiserfs/Makefile
@@ -30,7 +30,13 @@  include $(TOPDIR)/config.mk
 LIB	= $(obj)libreiserfs.o
 
 AOBJS	=
-COBJS-$(CONFIG_CMD_REISER) := reiserfs.o dev.o mode_string.o
+COBJS-$(CONFIG_CMD_REISER) := reiserfs.o mode_string.o
+
+ifdef CONFIG_DM
+COBJS-${CONFIG_CMD_REISER} += dev_dm.o
+else
+COBJS-${CONFIG_CMD_REISER} += dev.o
+endif
 
 SRCS	:= $(AOBJS:.o=.S) $(COBJS-y:.o=.c)
 OBJS	:= $(addprefix $(obj),$(AOBJS) $(COBJS-y))
diff --git a/fs/reiserfs/dev_dm.c b/fs/reiserfs/dev_dm.c
new file mode 100644
index 0000000..4dad499
--- /dev/null
+++ b/fs/reiserfs/dev_dm.c
@@ -0,0 +1,104 @@ 
+/*
+ *  (C) Copyright 2003 - 2004
+ *  Sysgo AG, <www.elinos.com>, Pavel Bartusek <pba@sysgo.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that 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, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+#include <common.h>
+#include <config.h>
+#include <reiserfs.h>
+
+#include "reiserfs_private.h"
+
+#include <dm/structures.h>
+#include <dm/blockdev.h>
+
+static struct instance *bdev;
+
+int reiserfs_set_blk_dev(struct instance *dev)
+{
+	struct option op;
+	int error;
+
+	if (!dev)
+		return 0;
+
+	error = blockdev_get_option(dev, BLKD_OPT_BLOCKCOUNT, &op);
+	if (error || (OPTION_TYPE(op) != OPTION_TYPE_U))
+		return 0;
+	bdev = dev;
+
+	return op.data.data_u;
+}
+
+
+int reiserfs_devread(int sector, int byte_offset, int byte_len, char *buf)
+{
+	char sec_buf[SECTOR_SIZE];
+	unsigned block_len;
+
+	/*
+	 *  Get the read to the beginning of a partition.
+	 */
+	sector += byte_offset >> SECTOR_BITS;
+	byte_offset &= SECTOR_SIZE - 1;
+
+#if defined(DEBUG)
+	printf(" <%d, %d, %d> ", sector, byte_offset, byte_len);
+#endif
+
+
+	if (!bdev)
+		return 0;
+
+
+	if (byte_offset != 0) {
+		/* read first part which isn't aligned with start of sector */
+		if (blockdev_read(bdev, sector, 1, sec_buf) != 1) {
+			printf(" ** reiserfs_devread() read error\n");
+			return 0;
+		}
+		memcpy(buf, sec_buf+byte_offset,
+			min(SECTOR_SIZE-byte_offset, byte_len));
+		buf += min(SECTOR_SIZE-byte_offset, byte_len);
+		byte_len -= min(SECTOR_SIZE-byte_offset, byte_len);
+		sector++;
+	}
+
+	/* read sector aligned part */
+	block_len = byte_len & ~(SECTOR_SIZE-1);
+	if (blockdev_read(bdev, sector, block_len / SECTOR_SIZE, buf) !=
+	    block_len / SECTOR_SIZE) {
+		printf(" ** reiserfs_devread() read error - block\n");
+		return 0;
+	}
+	buf += block_len;
+	byte_len -= block_len;
+	sector += block_len/SECTOR_SIZE;
+
+	if (byte_len != 0) {
+		/* read rest of data which are not in whole sector */
+		if (blockdev_read(bdev, sector, 1, sec_buf) != 1) {
+			printf(" ** reiserfs_devread() read error - "
+				"last part\n");
+			return 0;
+		}
+		memcpy(buf, sec_buf, byte_len);
+	}
+
+	return 1;
+}
diff --git a/include/reiserfs.h b/include/reiserfs.h
index c465b3c..e0ce2c1 100644
--- a/include/reiserfs.h
+++ b/include/reiserfs.h
@@ -27,6 +27,9 @@ 
  * from the original reiser fs code, as found in the linux kernel.
  */
 
+#ifdef CONFIG_DM
+#include <dm/structures.h>
+#endif
 
 #define SECTOR_SIZE		0x200
 #define SECTOR_BITS		9
@@ -74,8 +77,11 @@  typedef enum
   MAX_ERR_NUM
 } reiserfs_error_t;
 
-
+#ifdef CONFIG_DM
+extern int reiserfs_set_blk_dev(struct instance *bdev);
+#else
 extern int reiserfs_set_blk_dev(block_dev_desc_t *rbdd, int part);
+#endif
 extern int reiserfs_ls (char *dirname);
 extern int reiserfs_open (char *filename);
 extern int reiserfs_read (char *buf, unsigned len);