相当于.long sys_clone,因为sys_clone是函数名,所以.long生成的是sys_clone函数名对应的地址 */ #define CALL(x) .long x #ifdef CONFIG_FUNCTION_TRACER /* 配合ldrcc一起看,原来ldrcc是这样 */ ldrcc pc, [tbl, scno, lsl #2] /* 把CALL(x)代入ldrcc,最后是这样 */ ldrcc pc, sys_clone(...
/* http://lxr.free-electrons.com/source/include/linux/sched.h?v=4.5#L2646 */extern long_do_fork(unsigned long,unsigned long,unsigned long,int __user*,int __user*,unsigned long);extern longdo_fork(unsigned long,unsigned long,unsigned long,int __user*,int __user*);/* linux2.5.32以...
我们看下clone的manual: clone() creates a new process, in a manner similar to fork(2). ... When the child process is created with clone(), it commences execution by calling the function pointed to by the argument fn. (This differs from fork(2), where execution continues in the child ...
child terminates (either normally, by calling _exit(2), or abnormally, after delivery of a fatal signal), or it makes a call to execve(2). Until that point, the child shares all memory with its parent, includ- ing the stack.The child must not return from the current function or call...
/* causes final put_task_struct in finish_task_switch(). */ tsk->state = TASK_DEAD; schedule(); BUG(); /* Avoid "noreturn function does return". */ for (;;) cpu_relax(); /* For when BUG is null */ } 1. 2. 3.
在linux早期设计中,当调用fork命令来创建子进程时,子进程会将父进程的所有资源做一次全部拷贝复制工作。这个拷贝复制的工作是相当耗时的,影响系统的整体性能。 当引入了COW机制之后,当fork用来创建子进程时,子进程只拷贝页表的内存,不再拷贝物理地址对应的真正数据了。
have been considerably more complicated, if only becauseexecas such did not exist; its function ...
1. Linux exec指令执行监控Hook方案2. 在"Multi-Threadeed Program"环境中调用fork存在的风险3. Fork When Multi-Threadeed Program的安全设计原则4. Fork When Multi-Threadeed Program Deaklock Demo Code 1. Linux exec指令执行监控Hook方案 1. 基于LD_PRELOAD技术的glibc API劫持Hook技术1) 优点: 位于Ring3应...
ValetLinuxis a Laravel development environment for Linux minimalists. No Vagrant, no/etc/hostsfile. You can even share your sites publicly using local tunnels.Yeah, we like it too. ValetLinuxconfigures your system to always run Nginx in the background when your machine starts. Then, usingDnsMa...
In contrast, the Linux kernel is tightly controlled by Linus Torvalds and some core Linux code keepers. As long as these people are around, there is little chance that the Linux kernel will fork like the Unix kernel did. The only differences among Linux distributions in terms of kernel is ...