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bugfix: 修复了pipe结构体的内部碎片问题

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This commit is contained in:
fslongjin
2022-09-13 16:48:32 +08:00
parent 26eebaf03a
commit c80f572db7
2 changed files with 87 additions and 61 deletions
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20
kernel/filesystem/VFS/VFS.h
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@ -34,7 +34,7 @@ extern struct vfs_superblock_t *vfs_root_sb;
#define VFS_IF_FILE (1UL << 0)
#define VFS_IF_DIR (1UL << 1)
#define VFS_IF_DEVICE (1UL << 2)
#define VFS_IF_DEAD (1UL<<3) /* removed, but still open directory */
#define VFS_IF_DEAD (1UL << 3) /* removed, but still open directory */
struct vfs_super_block_operations_t;
struct vfs_inode_operations_t;
@ -42,7 +42,7 @@ struct vfs_inode_operations_t;
struct vfs_index_node_t;
struct vfs_dir_entry_operations_t;
#define VFS_DF_MOUNTED (1 << 0) // 当前dentry是一个挂载点
#define VFS_DF_MOUNTED (1 << 0) // 当前dentry是一个挂载点
#define VFS_DF_CANNOT_MOUNT (1 << 1) // 当前dentry是一个挂载点
struct vfs_dir_entry_t
{
@ -84,6 +84,18 @@ struct vfs_index_node_t
void *private_inode_info;
};
/**
* @brief 文件的mode
*
*/
#define VFS_FILE_MODE_READ (1 << 0)
#define VFS_FILE_MODE_WRITE (1 << 1)
#define VFS_FILE_MODE_RW (VFS_FILE_MODE_READ | VFS_FILE_MODE_WRITE)
#define vfs_file_can_read(file) (((file)->mode) & VFS_FILE_MODE_READ)
#define vfs_file_can_write(file) (((file)->mode) & VFS_FILE_MODE_WRITE)
#define vfs_file_can_rw(file) ((((file)->mode) & VFS_FILE_MODE_RW) == VFS_FILE_MODE_RW)
/**
* @brief 文件描述符
*
@ -223,10 +235,10 @@ struct vfs_dir_entry_t *vfs_alloc_dentry(const int name_size);
/**
* @brief 分配inode并将引用计数初始化为1
*
*
* @return struct vfs_index_node_t * 分配得到的inode
*/
struct vfs_index_node_t * vfs_alloc_inode();
struct vfs_index_node_t *vfs_alloc_inode();
/**
* @brief 打开文件