recvfrom:return {@a[execname,uid]=sum(arg0)} syscall::sendto:return {@b[execname,uid]=sum(arg0)} syscall::open*:entry {@c[execname,uid,copyinstr(arg0),errno]=count()} syscall::execve:return, syscall::posix_spawn:return {@d[execname,uid,ppid]=count()} syscall::fork:return, ...
msg, from = recvfrom(udp_fd): “OS, please put me to sleep until a UDP datagram is received, then give it to me”. sendto(udp_fd, msg, from): “OS, please send this UDP datagram from my port to this remote address and port”. ...
Also, from a hardware perspective if you doubled your RAM to 4Gb that would be a nice exercise to see if it extended you Mac's stamina. If I had a computer that was freezing the two tools to use would be: Activity monitor which will show in real time what applications are to the...
What islsof? $ lsof | less COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME loginwind 113 jim cwd DIR 1,4 1190 2 / loginwind 113 jim 0r CHR 3,2 0t0 304 /dev/null loginwind 113 jim 1u CHR 3,2 0t0 304 /dev/null loginwind 113 jim 2u CHR 3,2 0t4837 304 /dev/null lo...
Of course this function can return immediately when the data is received on the other side. So what towelroot do is this: create a thread that will accept a connection in localhost, after it accept()s it, it never reads the data, so the sendmmsg call will be just hanging there waiting...
2、错误一:error: ‘ptrdiff_t’ does not name a type In file included from external/gtest/src/../include/gtest/gtest-param-test.h:157:0, from external/gtest/src/../include/gtest/gtest.h:69, from external/gtest/src/gtest_main.cc:32: ...
•recv, recvfrom 数据接收 •send, sendto 数据发送 close, shutdown 关闭套接字 3.3 Socket 数据结构 用户使用socket系统调用编写应用程序时,通过一个数字来表示一个socket,所有的操作都在该数字上进行,这个数字称为套接字描述符。在系统调用 的实现函数里,这个数字就会被映射成一个表示socket的结构体,该结构...
NULL, NULL, &addr); if (result != 0) { printf("Error from getaddrinfo: %s\n", gai_strerror(result)); return 1; } struct sockaddr_in* internet_addr = (struct sockaddr_in*) addr->ai_addr; printf("google.com is at: %s\n", inet_ntoa(internet_addr->sin_addr)); return 0; }...