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Code Issues Releases Wiki Activity

new:chardev的挂载

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This commit is contained in:
fslongjin
2022-09-10 00:18:18 +08:00
parent 7d510a2f86
commit ef7d20c0fb
16 changed files with 412 additions and 75 deletions
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17
kernel/filesystem/VFS/mount.c
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@ -30,7 +30,7 @@ int do_mount(struct vfs_dir_entry_t *old_dentry, struct vfs_dir_entry_t *new_den
mp->dentry = old_dentry;
mp->parent_dentry = old_dentry->parent;
kdebug("&new_dentry->name=%#018lx, &old_dentry->name=%#018lx", &new_dentry->name, &old_dentry->name);
// kdebug("&new_dentry->name=%#018lx, &old_dentry->name=%#018lx", &new_dentry->name, &old_dentry->name);
// 拷贝名称
strncpy(new_dentry->name, old_dentry->name, old_dentry->name_length);
@ -41,7 +41,22 @@ int do_mount(struct vfs_dir_entry_t *old_dentry, struct vfs_dir_entry_t *new_den
// 将新的dentry的list结点替换掉父dentry的列表中的old_dentry的list结点
list_replace(&old_dentry->child_node_list, &new_dentry->child_node_list);
// 后挂载的dentry在链表的末尾（umount恢复的时候需要依赖这个性质）
list_append(&mnt_list_head, &mp->mnt_list);
return 0;
}
/**
* @brief 取消某个文件系统的挂载
*
* @param dentry 对应文件系统的根dentry
* @return int 错误码
*/
int do_umount(struct vfs_dir_entry_t* dentry)
{
// todo: 实现umount（主要是结点的恢复问题）
return 0;
}