linux kernel : system call
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分类 linux 中的文章
linux kernel : process
task_struct task_struct & thread_info process state zombie fork & exec process……
linux shell and makefile
shell Bash脚本编程 makefile learn makefiles……
gcc
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vfs重要数据结构
superblock object struct super_block { /** * 指向超级块链表的指针 */ struct list_head s_list; /* Keep this first */ /** * 设备标识符 */ dev_t s_dev; /* search index; _not_ kdev_t */ /** * 以字节为单位的块大小 */ unsigned long s_blocksize; /** * 基本块设备驱动程序中的以字节为单位的块大小。 */ unsigned long s_old_blocksize; /** * 以位为单位的块大小 */ unsigned char s_blocksize_bits; /** * 脏标志 */ unsigned char s_dirt; /** * 文件的最大长度 */ unsigned long long s_maxbytes; /* Max file size */ /** * 文件系统类型。 */ struct……
网络编程
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system call
linux linux windows windows 引用 system call syscall under-the-hood 上下文切换……
aslr保护机制
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canary保护机制
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NX保护机制
NX开启状态 $ checksec vuln [*] '~/vuln' Arch: amd64-64-little RELRO: Partial RELRO Stack: No canary found NX: NX enabled PIE: No PIE (0x400000) the NX bit. The NX bit has the effect of preventing memory areas not supposed to contain code (typically, the stack) from being executed ROP mprotect sigreturn……