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为vfs挂载文件系统增加挂载点路径参数

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This commit is contained in:
fslongjin
2022-09-06 15:12:55 +08:00
parent 339053a20e
commit 86a5f25e07
3 changed files with 22 additions and 15 deletions
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14
kernel/filesystem/VFS/VFS.c
View File

@ -10,25 +10,31 @@
// 为filesystem_type_t结构体实例化一个链表头
static struct vfs_filesystem_type_t vfs_fs = {"filesystem", 0};
struct vfs_superblock_t *vfs_root_sb = NULL;
/**
* @brief 挂载文件系统
*
* @param path 要挂载到的路径
* @param name 文件系统名
* @param blk 块设备结构体
* @return struct vfs_superblock_t*
* @return struct vfs_superblock_t* 挂载后，文件系统的超级块
*/
struct vfs_superblock_t *vfs_mount_fs(char *name, struct block_device *blk)
struct vfs_superblock_t *vfs_mount_fs(const char *path, char *name, struct block_device *blk)
{
// todo: 选择挂载点
struct vfs_filesystem_type_t *p = NULL;
for (p = &vfs_fs; p; p = p->next)
{
if (!strcmp(p->name, name)) // 存在符合的文件系统
{
return p->read_superblock(blk);
struct vfs_superblock_t *sb = p->read_superblock(blk);
if (strcmp(path, "/") == 0) // 如果挂载到的是'/'挂载点，则让其成为最顶层的文件系统
vfs_root_sb = sb;
return sb;
}
}
kdebug("unsupported fs: %s", name);
return NULL;
}

9
kernel/filesystem/VFS/VFS.h
View File

@ -15,7 +15,7 @@
#include <common/fcntl.h>
#include <common/blk_types.h>
struct vfs_superblock_t *vfs_root_sb = NULL;
extern struct vfs_superblock_t *vfs_root_sb;
#define VFS_DPT_MBR 0 // MBR分区表
#define VFS_DPT_GPT 1 // GPT分区表
@ -54,7 +54,7 @@ struct vfs_superblock_t
{
struct vfs_dir_entry_t *root;
struct vfs_super_block_operations_t *sb_ops;
struct block_device * blk_device;
struct block_device *blk_device;
void *private_sb_info;
};
@ -175,11 +175,12 @@ uint64_t vfs_unregister_filesystem(struct vfs_filesystem_type_t *fs);
/**
* @brief 挂载文件系统
*
* @param path 要挂载到的路径
* @param name 文件系统名
* @param blk 块设备结构体
* @return struct vfs_superblock_t*
* @return struct vfs_superblock_t* 挂载后，文件系统的超级块
*/
struct vfs_superblock_t *vfs_mount_fs(char *name, struct block_device *blk);
struct vfs_superblock_t *vfs_mount_fs(const char *path, char *name, struct block_device *blk);
/**
* @brief 按照路径查找文件