Embedded GPLv2 license in dfs

1 files changed, 211 insertions, 188 deletions

diff --git a/components/dfs/filesystems/devfs/devfs.c b/components/dfs/filesystems/devfs/devfs.c
index 4d23f78bb6..969c5d3321 100644
--- a/components/dfs/filesystems/devfs/devfs.c
+++ b/components/dfs/filesystems/devfs/devfs.c
@@ -1,3 +1,26 @@
+/*
+ * File      : devfs.c
+ * This file is part of Device File System in RT-Thread RTOS
+ * COPYRIGHT (C) 2004-2011, RT-Thread Development Team
+ *
+ *  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.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
 #include <rtthread.h>
 #include <dfs.h>
 #include <dfs_fs.h>
@@ -6,276 +29,276 @@
 
 struct device_dirent
 {
-	rt_device_t *devices;
-	rt_uint16_t read_index;
-	rt_uint16_t device_count;
+    rt_device_t *devices;
+    rt_uint16_t read_index;
+    rt_uint16_t device_count;
 };
 
 int dfs_device_fs_mount(struct dfs_filesystem *fs, unsigned long rwflag, const void *data)
 {
-	return DFS_STATUS_OK;
+    return DFS_STATUS_OK;
 }
 
 int dfs_device_fs_ioctl(struct dfs_fd *file, int cmd, void *args)
 {
-	rt_err_t result;
-	rt_device_t dev_id;
+    rt_err_t result;
+    rt_device_t dev_id;
 
-	RT_ASSERT(file != RT_NULL);
+    RT_ASSERT(file != RT_NULL);
 
-	/* get device handler */
-	dev_id = (rt_device_t)file->data;
-	RT_ASSERT(dev_id != RT_NULL);
+    /* get device handler */
+    dev_id = (rt_device_t)file->data;
+    RT_ASSERT(dev_id != RT_NULL);
 
-	/* close device handler */
-	result = rt_device_control(dev_id, cmd, args);
-	if (result == RT_EOK)
-		return DFS_STATUS_OK;
+    /* close device handler */
+    result = rt_device_control(dev_id, cmd, args);
+    if (result == RT_EOK)
+        return DFS_STATUS_OK;
 
-	return -DFS_STATUS_EIO;
+    return -DFS_STATUS_EIO;
 }
 
 int dfs_device_fs_read(struct dfs_fd *file, void *buf, rt_size_t count)
 {
-	int result;
-	rt_device_t dev_id;
+    int result;
+    rt_device_t dev_id;
 
-	RT_ASSERT(file != RT_NULL);
+    RT_ASSERT(file != RT_NULL);
 
-	/* get device handler */
-	dev_id = (rt_device_t)file->data;
-	RT_ASSERT(dev_id != RT_NULL);
+    /* get device handler */
+    dev_id = (rt_device_t)file->data;
+    RT_ASSERT(dev_id != RT_NULL);
 
-	/* read device data */
-	result = rt_device_read(dev_id, file->pos, buf, count);
-	file->pos += result;
+    /* read device data */
+    result = rt_device_read(dev_id, file->pos, buf, count);
+    file->pos += result;
 
-	return result;
+    return result;
 }
 
 int dfs_device_fs_write(struct dfs_fd *file, const void *buf, rt_size_t count)
 {
-	int result;
-	rt_device_t dev_id;
+    int result;
+    rt_device_t dev_id;
 
-	RT_ASSERT(file != RT_NULL);
+    RT_ASSERT(file != RT_NULL);
 
-	/* get device handler */
-	dev_id = (rt_device_t)file->data;
-	RT_ASSERT(dev_id != RT_NULL);
+    /* get device handler */
+    dev_id = (rt_device_t)file->data;
+    RT_ASSERT(dev_id != RT_NULL);
 
-	/* read device data */
-	result = rt_device_write(dev_id, file->pos, buf, count);
-	file->pos += result;
+    /* read device data */
+    result = rt_device_write(dev_id, file->pos, buf, count);
+    file->pos += result;
 
-	return result;
+    return result;
 }
 
 int dfs_device_fs_close(struct dfs_fd *file)
 {
-	rt_err_t result;
-	rt_device_t dev_id;
+    rt_err_t result;
+    rt_device_t dev_id;
 
-	RT_ASSERT(file != RT_NULL);
+    RT_ASSERT(file != RT_NULL);
 
-	if (file->type == FT_DIRECTORY)
-	{
-		struct device_dirent *root_dirent;
+    if (file->type == FT_DIRECTORY)
+    {
+        struct device_dirent *root_dirent;
 
-		root_dirent = (struct device_dirent *)file->data;
-		RT_ASSERT(root_dirent != RT_NULL);
-		
-		/* release dirent */
-		rt_free(root_dirent);
-		return DFS_STATUS_OK;
-	}
+        root_dirent = (struct device_dirent *)file->data;
+        RT_ASSERT(root_dirent != RT_NULL);
+        
+        /* release dirent */
+        rt_free(root_dirent);
+        return DFS_STATUS_OK;
+    }
 
-	/* get device handler */
-	dev_id = (rt_device_t)file->data;
-	RT_ASSERT(dev_id != RT_NULL);
+    /* get device handler */
+    dev_id = (rt_device_t)file->data;
+    RT_ASSERT(dev_id != RT_NULL);
 
-	/* close device handler */
-	result = rt_device_close(dev_id);
-	if (result == RT_EOK)
-	{
-		file->data = RT_NULL;
+    /* close device handler */
+    result = rt_device_close(dev_id);
+    if (result == RT_EOK)
+    {
+        file->data = RT_NULL;
 
-		return DFS_STATUS_OK;
-	}
+        return DFS_STATUS_OK;
+    }
 
-	return -DFS_STATUS_EIO;
+    return -DFS_STATUS_EIO;
 }
 
 int dfs_device_fs_open(struct dfs_fd *file)
 {
-	rt_device_t device;
+    rt_device_t device;
 
-	if (file->flags & DFS_O_CREAT)
-		return -DFS_STATUS_EINVAL;
+    if (file->flags & DFS_O_CREAT)
+        return -DFS_STATUS_EINVAL;
 
-	/* open root directory */
-	if ((file->path[0] == '/') && (file->path[1] == '\0') &&
-		(file->flags & DFS_O_DIRECTORY))
-	{
-		struct rt_object *object;
-		struct rt_list_node *node;
-		struct rt_object_information *information;
-		struct device_dirent *root_dirent;
-		rt_uint32_t count = 0;
-		
-		extern struct rt_object_information rt_object_container[];
+    /* open root directory */
+    if ((file->path[0] == '/') && (file->path[1] == '\0') &&
+        (file->flags & DFS_O_DIRECTORY))
+    {
+        struct rt_object *object;
+        struct rt_list_node *node;
+        struct rt_object_information *information;
+        struct device_dirent *root_dirent;
+        rt_uint32_t count = 0;
+        
+        extern struct rt_object_information rt_object_container[];
 
-		/* lock scheduler */
-		rt_enter_critical();
+        /* lock scheduler */
+        rt_enter_critical();
 
-		/* traverse device object */
-		information = &rt_object_container[RT_Object_Class_Device];
-		for (node = information->object_list.next; node != &(information->object_list); node = node->next)
-		{
-			count ++;
-		}
+        /* traverse device object */
+        information = &rt_object_container[RT_Object_Class_Device];
+        for (node = information->object_list.next; node != &(information->object_list); node = node->next)
+        {
+            count ++;
+        }
 
-		root_dirent = (struct device_dirent *)rt_malloc(sizeof(struct device_dirent) + 
-			count * sizeof(rt_device_t));
-		if (root_dirent != RT_NULL)
-		{
-			root_dirent->devices = (rt_device_t *)(root_dirent + 1);
-			root_dirent->read_index = 0;
-			root_dirent->device_count = count;
-			count = 0;
-			/* get all device node */
-			for (node = information->object_list.next; node != &(information->object_list); node = node->next)
-			{
-				object = rt_list_entry(node, struct rt_object, list);
-				root_dirent->devices[count] = (rt_device_t)object;
-				count ++;
-			}
-		}
-		rt_exit_critical();
+        root_dirent = (struct device_dirent *)rt_malloc(sizeof(struct device_dirent) + 
+            count * sizeof(rt_device_t));
+        if (root_dirent != RT_NULL)
+        {
+            root_dirent->devices = (rt_device_t *)(root_dirent + 1);
+            root_dirent->read_index = 0;
+            root_dirent->device_count = count;
+            count = 0;
+            /* get all device node */
+            for (node = information->object_list.next; node != &(information->object_list); node = node->next)
+            {
+                object = rt_list_entry(node, struct rt_object, list);
+                root_dirent->devices[count] = (rt_device_t)object;
+                count ++;
+            }
+        }
+        rt_exit_critical();
 
-		/* set data */
-		file->data = root_dirent;
-		
-		return DFS_STATUS_OK;
-	}
+        /* set data */
+        file->data = root_dirent;
+        
+        return DFS_STATUS_OK;
+    }
 
-	device = rt_device_find(&file->path[1]);
-	if (device == RT_NULL)
-		return -DFS_STATUS_ENODEV;
+    device = rt_device_find(&file->path[1]);
+    if (device == RT_NULL)
+        return -DFS_STATUS_ENODEV;
 
-	file->data = device;
-	
-	return DFS_STATUS_OK;
+    file->data = device;
+    
+    return DFS_STATUS_OK;
 }
 
 int dfs_device_fs_stat(struct dfs_filesystem *fs, const char *path, struct stat *st)
 {
-	/* stat root directory */
-	if ((path[0] == '/') && (path[1] == '\0'))
-	{
-		st->st_dev = 0;
+    /* stat root directory */
+    if ((path[0] == '/') && (path[1] == '\0'))
+    {
+        st->st_dev = 0;
 
-		st->st_mode = DFS_S_IFREG | DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH |
-			DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH;
-		st->st_mode &= ~DFS_S_IFREG;
-		st->st_mode |= DFS_S_IFDIR | DFS_S_IXUSR | DFS_S_IXGRP | DFS_S_IXOTH;
+        st->st_mode = DFS_S_IFREG | DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH |
+            DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH;
+        st->st_mode &= ~DFS_S_IFREG;
+        st->st_mode |= DFS_S_IFDIR | DFS_S_IXUSR | DFS_S_IXGRP | DFS_S_IXOTH;
 
-		st->st_size  = 0;
-		st->st_mtime = 0;
-		st->st_blksize = 512;
-		
-		return DFS_STATUS_OK;
-	}
-	else
-	{
-		rt_device_t dev_id;
+        st->st_size  = 0;
+        st->st_mtime = 0;
+        st->st_blksize = 512;
+        
+        return DFS_STATUS_OK;
+    }
+    else
+    {
+        rt_device_t dev_id;
 
-		dev_id = rt_device_find(&path[1]);
-		if (dev_id != RT_NULL)
-		{
-			st->st_dev = 0;
+        dev_id = rt_device_find(&path[1]);
+        if (dev_id != RT_NULL)
+        {
+            st->st_dev = 0;
 
-			st->st_mode = DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH |
-				DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH;
+            st->st_mode = DFS_S_IRUSR | DFS_S_IRGRP | DFS_S_IROTH |
+                DFS_S_IWUSR | DFS_S_IWGRP | DFS_S_IWOTH;
 
-			if (dev_id->type == RT_Device_Class_Char)
-				st->st_mode |= DFS_S_IFCHR;
-			else if (dev_id->type == RT_Device_Class_Block)
-				st->st_mode |= DFS_S_IFBLK;
-			else
-				st->st_mode |= DFS_S_IFREG;
+            if (dev_id->type == RT_Device_Class_Char)
+                st->st_mode |= DFS_S_IFCHR;
+            else if (dev_id->type == RT_Device_Class_Block)
+                st->st_mode |= DFS_S_IFBLK;
+            else
+                st->st_mode |= DFS_S_IFREG;
 
-			st->st_size  = 0;
-			st->st_mtime = 0;
-			st->st_blksize = 512;
-			
-			return DFS_STATUS_OK;
-		}
-	}
+            st->st_size  = 0;
+            st->st_mtime = 0;
+            st->st_blksize = 512;
+            
+            return DFS_STATUS_OK;
+        }
+    }
 
-	return -DFS_STATUS_ENOENT;
+    return -DFS_STATUS_ENOENT;
 }
 
 int dfs_device_fs_getdents(struct dfs_fd *file, struct dirent *dirp, rt_uint32_t count)
 {
-	rt_uint32_t index;
-	rt_object_t object;
-	struct dirent *d;
-	struct device_dirent *root_dirent;
+    rt_uint32_t index;
+    rt_object_t object;
+    struct dirent *d;
+    struct device_dirent *root_dirent;
 
-	root_dirent = (struct device_dirent *)file->data;
-	RT_ASSERT(root_dirent != RT_NULL);
+    root_dirent = (struct device_dirent *)file->data;
+    RT_ASSERT(root_dirent != RT_NULL);
 
-	/* make integer count */
-	count = (count / sizeof(struct dirent));
-	if (count == 0)
-		return -DFS_STATUS_EINVAL;
+    /* make integer count */
+    count = (count / sizeof(struct dirent));
+    if (count == 0)
+        return -DFS_STATUS_EINVAL;
 
-	for (index = 0; index < count && index + root_dirent->read_index < root_dirent->device_count; 
-		index ++)
-	{
-		object = (rt_object_t)root_dirent->devices[root_dirent->read_index + index];
+    for (index = 0; index < count && index + root_dirent->read_index < root_dirent->device_count; 
+        index ++)
+    {
+        object = (rt_object_t)root_dirent->devices[root_dirent->read_index + index];
 
-		d = dirp + index;
-		d->d_type = DFS_DT_REG;
-		d->d_namlen = RT_NAME_MAX;
-		d->d_reclen = (rt_uint16_t)sizeof(struct dirent);
-		rt_strncpy(d->d_name, object->name, RT_NAME_MAX);
-	}
+        d = dirp + index;
+        d->d_type = DFS_DT_REG;
+        d->d_namlen = RT_NAME_MAX;
+        d->d_reclen = (rt_uint16_t)sizeof(struct dirent);
+        rt_strncpy(d->d_name, object->name, RT_NAME_MAX);
+    }
 
-	root_dirent->read_index += index;
+    root_dirent->read_index += index;
 
-	return index * sizeof(struct dirent);
+    return index * sizeof(struct dirent);
 }
 
 static const struct dfs_filesystem_operation _device_fs = 
 {
-	"devfs",
-	DFS_FS_FLAG_DEFAULT,
-	dfs_device_fs_mount,
-	RT_NULL,
-	RT_NULL,
-	RT_NULL,
+    "devfs",
+    DFS_FS_FLAG_DEFAULT,
+    dfs_device_fs_mount,
+    RT_NULL,
+    RT_NULL,
+    RT_NULL,
 
-	dfs_device_fs_open,
-	dfs_device_fs_close,
-	dfs_device_fs_ioctl,
-	dfs_device_fs_read,
-	dfs_device_fs_write,
-	RT_NULL,
-	RT_NULL,
-	dfs_device_fs_getdents,
-	RT_NULL,
-	dfs_device_fs_stat,
-	RT_NULL,
+    dfs_device_fs_open,
+    dfs_device_fs_close,
+    dfs_device_fs_ioctl,
+    dfs_device_fs_read,
+    dfs_device_fs_write,
+    RT_NULL,
+    RT_NULL,
+    dfs_device_fs_getdents,
+    RT_NULL,
+    dfs_device_fs_stat,
+    RT_NULL,
 };
 
 int devfs_init(void)
 {
-	/* register rom file system */
-	dfs_register(&_device_fs);
+    /* register rom file system */
+    dfs_register(&_device_fs);
 
-	return 0;
+    return 0;
 }
 INIT_FS_EXPORT(devfs_init);