(See chapters 6 and 12; these functions are also handy in that they return the length of the line read. They differ from fgets in their treatment of overlong lines, though.) The function int puts(char *line) wr
常见的_IO_FILE_plus结构体有_IO_2_1_stderr、_IO_2_1_stdout、_IO_2_1_stdin,前面提到的stdin等就是指向这些对应_IO_FILE_plus结构体的指针。 可以通过gdb的p指令查看。 此外,存在一个指向_IO_FILE_plus结构体的_IO_list_all指针,通常情况下指向_IO_2_1_stderr。 ...
struct _IO_FILE_plus { FILE file; const struct _IO_jump_t *vtable; }; 该结构第一个元素包含的也是 FILE,因此可以进行强制类型转换。但末尾还多了个指针,一般这种模式常用于在 C 语言中实现面向对象(多态)调用,这个指针就作为虚函数表。该虚表的定义如下: #define JUMP_FIELD(TYPE, NAME) TYPE NAME ...
如果你想在Python中进行文件操作,你需要导入io模块。下面是一个简单的示例,展示了如何导入io模块并使用File类进行文件操作: 代码语言:javascript 复制 import io # 打开文件 file = io.FileIO("example.txt", mode="r") # 读取文件内容 content = file.read() print(content) # 关闭文件 file.close() 在上...
Both functions always operate on the segments in order, starting with iov[0], then iov[1], and so on, through iov[count-1]. Return values On success, readv() and writev() return the number of bytes read or written, respectively. This number should be the sum of all count iov_len ...
ILE C Module (CRTCMOD) or Create Bound C Program (CRTBNDC) command. When you specify *IFSIO, the integrated file system I/O functions are bound instead of the data management I/O functions. In effect, the C functions of ILE C use the integrated file system functions to perform I/O....
FUSE系统IO模式 FUSE 性能评测 关于Fuse文件系统: FUSE (Filesystem in Userspace) is an interface for userspace programs to export a filesystem to theLinuxkernel. The FUSE project consists of two components: thefusekernel module (maintained in the regular kernel repositories) and the _libfuse_user...
fio 的全称是 flexible I/O tester,是常用的磁盘性能测试工具。fio 通过产生一系列的线程或进程来执行用户指定的特定类型 IO 操作。典型的用法是用户将需要模拟的 IO 负载写入到 job file 中。fio 支持多种 IO 引擎,通过 ioengine=io_uring,我们可以在 fio 中使用 io_uri
本文主要着眼于glibc下的一些漏洞及利用技巧和IO调用链,由浅入深,分为 “基础堆利用漏洞及基本IO攻击” 与 “高版本glibc下的利用” 两部分来进行讲解,前者主要包括了一些glibc相关的基础知识,以及低版本glibc(2.27及以前)下常见的漏洞利用方式,后者主要涉及到一些...
For example, most process information can be gathered from the functions in the root procfs package. Information about block devices such as disk drives is available in the blockdevices sub-package. Building and Testing The procfs library is intended to be built as part of another application, ...