[U-Boot] [PATCH 08/11] sandbox: Add host filesystem
Simon Glass
sjg at chromium.org
Wed Dec 26 20:53:35 CET 2012
This allows reading of files from the host filesystem in sandbox.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
Makefile | 1 +
disk/part.c | 17 ++++++++++
fs/fs.c | 10 ++++++
fs/sandbox/Makefile | 47 +++++++++++++++++++++++++++
fs/sandbox/sandboxfs.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++++
include/fs.h | 1 +
include/sandboxfs.h | 30 +++++++++++++++++
7 files changed, 189 insertions(+), 0 deletions(-)
create mode 100644 fs/sandbox/Makefile
create mode 100644 fs/sandbox/sandboxfs.c
create mode 100644 include/sandboxfs.h
diff --git a/Makefile b/Makefile
index a7b6cd1..ee21b24 100644
--- a/Makefile
+++ b/Makefile
@@ -268,6 +268,7 @@ LIBS-y += fs/libfs.o \
fs/fdos/libfdos.o \
fs/jffs2/libjffs2.o \
fs/reiserfs/libreiserfs.o \
+ fs/sandbox/libsandboxfs.o \
fs/ubifs/libubifs.o \
fs/yaffs2/libyaffs2.o \
fs/zfs/libzfs.o
diff --git a/disk/part.c b/disk/part.c
index 7bdc90e..58a4563 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -472,6 +472,23 @@ int get_device_and_partition(const char *ifname, const char *dev_part_str,
int part;
disk_partition_t tmpinfo;
+ /*
+ * For now, we have a special case for sandbox, since there is no
+ * real block device support.
+ */
+ if (0 == strcmp(ifname, "host")) {
+ *dev_desc = NULL;
+ info->start = info->size = info->blksz = 0;
+ info->bootable = 0;
+ strcpy((char *)info->type, BOOT_PART_TYPE);
+ strcpy((char *)info->name, "Sandbox host");
+#ifdef CONFIG_PARTITION_UUIDS
+ info->uuid[0] = 0;
+#endif
+
+ return 0;
+ }
+
/* If no dev_part_str, use bootdevice environment variable */
if (!dev_part_str || !strlen(dev_part_str) ||
!strcmp(dev_part_str, "-"))
diff --git a/fs/fs.c b/fs/fs.c
index 95c882e..6f5063c 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -20,6 +20,7 @@
#include <ext4fs.h>
#include <fat.h>
#include <fs.h>
+#include <sandboxfs.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -78,6 +79,15 @@ static struct fstype_info fstypes[] = {
.read = ext4_read_file,
},
#endif
+#ifdef CONFIG_SANDBOX
+ {
+ .fstype = FS_TYPE_SANDBOX,
+ .probe = sandbox_fs_set_blk_dev,
+ .close = sandbox_fs_close,
+ .ls = sandbox_fs_ls,
+ .read = fs_read_sandbox,
+ },
+#endif
{
.fstype = FS_TYPE_ANY,
.probe = fs_probe_unsupported,
diff --git a/fs/sandbox/Makefile b/fs/sandbox/Makefile
new file mode 100644
index 0000000..b3155b0
--- /dev/null
+++ b/fs/sandbox/Makefile
@@ -0,0 +1,47 @@
+#
+# Copyright (c) 2012, Google Inc.
+#
+# (C) Copyright 2006
+# Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+#
+# (C) Copyright 2003
+# Pavel Bartusek, Sysgo Real-Time Solutions AG, pba at sysgo.de
+#
+# 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
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = $(obj)libsandboxfs.o
+
+COBJS-$(CONFIG_SANDBOX) := sandboxfs.o
+
+SRCS := $(COBJS-y:.o=.c)
+OBJS := $(addprefix $(obj),$(AOBJS) $(COBJS-y))
+
+all: $(LIB) $(AOBJS)
+
+$(LIB): $(obj).depend $(OBJS)
+ $(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/fs/sandbox/sandboxfs.c b/fs/sandbox/sandboxfs.c
new file mode 100644
index 0000000..02d26ff
--- /dev/null
+++ b/fs/sandbox/sandboxfs.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2012, Google Inc.
+ *
+ * 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
+ */
+
+#include <common.h>
+#include <fs.h>
+#include <os.h>
+
+int sandbox_fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info)
+{
+ return 0;
+}
+
+long sandbox_fs_read_at(const char *filename, unsigned long pos,
+ void *buffer, unsigned long maxsize)
+{
+ ssize_t size;
+ int fd, ret;
+
+ fd = os_open(filename, OS_O_RDONLY);
+ if (fd < 0)
+ return fd;
+ ret = os_lseek(fd, pos, OS_SEEK_SET);
+ if (ret == -1) {
+ os_close(fd);
+ return ret;
+ }
+ if (!maxsize)
+ maxsize = os_get_filesize(filename);
+ size = os_read(fd, buffer, maxsize);
+ os_close(fd);
+
+ return size;
+}
+
+int sandbox_fs_ls(const char *dirname)
+{
+ struct os_dirent_node *head, *node;
+ int ret;
+
+ ret = os_dirent_ls(dirname, &head);
+ if (ret)
+ return ret;
+
+ for (node = head; node; node = node->next) {
+ printf("%s %10lu %s\n", os_dirent_get_typename(node->type),
+ node->size, node->name);
+ }
+
+ return 0;
+}
+
+void sandbox_fs_close(void)
+{
+}
+
+int fs_read_sandbox(const char *filename, void *buf, int offset, int len)
+{
+ int len_read;
+
+ len_read = sandbox_fs_read_at(filename, offset, buf, len);
+ if (len_read == -1) {
+ printf("** Unable to read file %s **\n", filename);
+ return -1;
+ }
+
+ return len_read;
+}
diff --git a/include/fs.h b/include/fs.h
index 4f30a38..b6d69e5 100644
--- a/include/fs.h
+++ b/include/fs.h
@@ -21,6 +21,7 @@
#define FS_TYPE_ANY 0
#define FS_TYPE_FAT 1
#define FS_TYPE_EXT 2
+#define FS_TYPE_SANDBOX 3
/*
* Tell the fs layer which block device an partition to use for future
diff --git a/include/sandboxfs.h b/include/sandboxfs.h
new file mode 100644
index 0000000..f5213ac
--- /dev/null
+++ b/include/sandboxfs.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2012, Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#ifndef __SANDBOX_FS__
+#define __SANDBOX_FS__
+
+int sandbox_fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info);
+
+long sandbox_fs_read_at(const char *filename, unsigned long pos,
+ void *buffer, unsigned long maxsize);
+
+void sandbox_fs_close(void);
+int sandbox_fs_ls(const char *dirname);
+int fs_read_sandbox(const char *filename, void *buf, int offset, int len);
+
+#endif
--
1.7.7.3
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