发现《Peace and Tranquility》 科技 计算机技术 IT AI 编程 博客 计算机技术 Go go语言 Golang 必剪创作秋来冬风 发消息 Win星流AI,一键解锁专属老婆 星流AI>> 接下来播放 自动连播 Go语言1.23新特性之unique包 秋来冬风 1890 1 年夜饭Ⅱ【2025拜年纪单品】 hank 82.4万 1222 ...
從相對於 FS 區段開頭的位移所指定位置讀取記憶體。語法C 複製 unsigned char __readfsbyte( unsigned long Offset ); unsigned short __readfsword( unsigned long Offset ); unsigned long __readfsdword( unsigned long Offset ); unsigned __int64 __readfsqword( unsigned long Offset );...
writel((val), (hba)->mmio_base + (reg)) #define ufshcd_readl(hba, reg) \ readl((hba)->mmio_base + (reg)) 至此一个完整read的系统调用就完成了。 ref: Tiffany的世界:【fs】read系统调用的完全剖析 Linux Scsi子系统框架介绍
* PG_error will be set again if readpage fails. */ ClearPageError(page); /* Start the actual read. The read will unlock the page. */ error = mapping->a_ops->readpage(filp, page); //真正去读取数据 goto page_ok; no_cached_page: /* Ok, it wasn't cached, so we need to cre...
[in] The offset from the beginning ofFSto read from. Return value The memory contents of the byte, word, doubleword, or quadword (as indicated by the name of the function called) at the locationFS:[Offset]. Requirements IntrinsicArchitecture ...
status =fs_read(sb->fs, inode, offset, &dentry,sizeof(dentry)); }if(status !=sizeof(dentry))return-1;returnindex; } 开发者ID:steinwaywhw,项目名称:Random,代码行数:25,代码来源:fs.c 示例7: read_fat ▲点赞 1▼ voidread_fat(DOS_FS *fs){inteff_size;unsignedlongi;void*first,*second...
本文深入剖析了Linux中read系统调用的实现机制，从系统调用接口入手，解析至SCSI层，具体步骤如下：在Linux内核版本3.0中，系统调用接口具体实现，涉及了多个关键层次。在vfs层中，do_sync_read实现同步读取功能，后续层次通过此接口。以ext3文件系统为例，generic_file_aio_read等函数实现异步I/O操作，ext...
1. fs.read()读取文件数据 语法格式: fs.read(fd, buffer, offset, length, position, callback) 从文件描述符fd中读取文件数据。 fd - 通过 fs.open() 方法返回的文件描述符。 buffer - 数据写入的缓冲区。 offset - 缓冲区写入的写入偏移量。
unsigned char __readfsbyte( unsigned long Offset ); unsigned short __readfsword( unsigned long Offset ); unsigned long __readfsdword( unsigned long Offset ); unsigned __int64 __readfsqword( unsigned long Offset ); ParametryPrzesunięcie [in] Przesunięcie od początku...
Offset [in] The offset from the beginning of FS to read from.Return valueThe memory contents of the byte, word, doubleword, or quadword (as indicated by the name of the function called) at the location FS:[Offset].RequirementsExtindeți tabelul IntrinsicArchitecture __readfsbyte x86...