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Support msc mode automatic switching

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Signed-off-by: Cliff Chen <cliff.chen@rock-chips.com>
This commit is contained in:
Cliff Chen
2020-03-16 10:50:34 +08:00
parent a7bcf90d78
commit 1c68bd9d3c
3 changed files with 61 additions and 1 deletions
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components/dfs/src/dfs_fs.c
+48
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@@ -555,6 +555,54 @@ int dfs_mount_device(rt_device_t dev)
rt_kprintf("can't find device:%s to be mounted.\n", dev->parent.name);
return -RT_ERROR;
}
int dfs_unmount_device(rt_device_t dev)
{
struct dfs_filesystem *iter;
struct dfs_filesystem *fs = NULL;
/* lock filesystem */
dfs_lock();
for (iter = &filesystem_table[0];
iter < &filesystem_table[DFS_FILESYSTEMS_MAX]; iter++)
{
/* check if the PATH is mounted */
if ((iter->dev_id->parent.name != NULL)
&& (strcmp(iter->dev_id->parent.name, dev->parent.name) == 0))
{
fs = iter;
break;
}
}
if (fs == NULL ||
fs->ops->unmount == NULL ||
fs->ops->unmount(fs) < 0)
{
goto err1;
}
/* close device, but do not check the status of device */
if (fs->dev_id != NULL)
rt_device_close(fs->dev_id);
if (fs->path != NULL)
rt_free(fs->path);
/* clear this filesystem table entry */
memset(fs, 0, sizeof(struct dfs_filesystem));
dfs_unlock();
return 0;
err1:
dfs_unlock();
return -1;
}
#endif
#ifdef RT_USING_FINSH