diff options
Diffstat (limited to 'monitor_fdpass.c')
| -rw-r--r-- | monitor_fdpass.c | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/monitor_fdpass.c b/monitor_fdpass.c deleted file mode 100644 index 7eb6f5c6..00000000 --- a/monitor_fdpass.c +++ /dev/null @@ -1,182 +0,0 @@ -/* $OpenBSD: monitor_fdpass.c,v 1.19 2010/01/12 00:58:25 djm Exp $ */ -/* - * Copyright 2001 Niels Provos <provos@citi.umich.edu> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "includes.h" - -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/uio.h> -#ifdef HAVE_SYS_UN_H -#include <sys/un.h> -#endif - -#include <errno.h> -#ifdef HAVE_POLL_H -#include <poll.h> -#endif -#include <string.h> -#include <stdarg.h> - -#include "log.h" -#include "monitor_fdpass.h" - -int -mm_send_fd(int sock, int fd) -{ -#if defined(HAVE_SENDMSG) && (defined(HAVE_ACCRIGHTS_IN_MSGHDR) || defined(HAVE_CONTROL_IN_MSGHDR)) - struct msghdr msg; -#ifndef HAVE_ACCRIGHTS_IN_MSGHDR - union { - struct cmsghdr hdr; - char buf[CMSG_SPACE(sizeof(int))]; - } cmsgbuf; - struct cmsghdr *cmsg; -#endif - struct iovec vec; - char ch = '\0'; - ssize_t n; - struct pollfd pfd; - - memset(&msg, 0, sizeof(msg)); -#ifdef HAVE_ACCRIGHTS_IN_MSGHDR - msg.msg_accrights = (caddr_t)&fd; - msg.msg_accrightslen = sizeof(fd); -#else - msg.msg_control = (caddr_t)&cmsgbuf.buf; - msg.msg_controllen = sizeof(cmsgbuf.buf); - cmsg = CMSG_FIRSTHDR(&msg); - cmsg->cmsg_len = CMSG_LEN(sizeof(int)); - cmsg->cmsg_level = SOL_SOCKET; - cmsg->cmsg_type = SCM_RIGHTS; - *(int *)CMSG_DATA(cmsg) = fd; -#endif - - vec.iov_base = &ch; - vec.iov_len = 1; - msg.msg_iov = &vec; - msg.msg_iovlen = 1; - - pfd.fd = sock; - pfd.events = POLLOUT; - while ((n = sendmsg(sock, &msg, 0)) == -1 && - (errno == EAGAIN || errno == EINTR)) { - debug3("%s: sendmsg(%d): %s", __func__, fd, strerror(errno)); - (void)poll(&pfd, 1, -1); - } - if (n == -1) { - error("%s: sendmsg(%d): %s", __func__, fd, - strerror(errno)); - return -1; - } - - if (n != 1) { - error("%s: sendmsg: expected sent 1 got %ld", - __func__, (long)n); - return -1; - } - return 0; -#else - error("%s: file descriptor passing not supported", __func__); - return -1; -#endif -} - -int -mm_receive_fd(int sock) -{ -#if defined(HAVE_RECVMSG) && (defined(HAVE_ACCRIGHTS_IN_MSGHDR) || defined(HAVE_CONTROL_IN_MSGHDR)) - struct msghdr msg; -#ifndef HAVE_ACCRIGHTS_IN_MSGHDR - union { - struct cmsghdr hdr; - char buf[CMSG_SPACE(sizeof(int))]; - } cmsgbuf; - struct cmsghdr *cmsg; -#endif - struct iovec vec; - ssize_t n; - char ch; - int fd; - struct pollfd pfd; - - memset(&msg, 0, sizeof(msg)); - vec.iov_base = &ch; - vec.iov_len = 1; - msg.msg_iov = &vec; - msg.msg_iovlen = 1; -#ifdef HAVE_ACCRIGHTS_IN_MSGHDR - msg.msg_accrights = (caddr_t)&fd; - msg.msg_accrightslen = sizeof(fd); -#else - msg.msg_control = &cmsgbuf.buf; - msg.msg_controllen = sizeof(cmsgbuf.buf); -#endif - - pfd.fd = sock; - pfd.events = POLLIN; - while ((n = recvmsg(sock, &msg, 0)) == -1 && - (errno == EAGAIN || errno == EINTR)) { - debug3("%s: recvmsg: %s", __func__, strerror(errno)); - (void)poll(&pfd, 1, -1); - } - if (n == -1) { - error("%s: recvmsg: %s", __func__, strerror(errno)); - return -1; - } - - if (n != 1) { - error("%s: recvmsg: expected received 1 got %ld", - __func__, (long)n); - return -1; - } - -#ifdef HAVE_ACCRIGHTS_IN_MSGHDR - if (msg.msg_accrightslen != sizeof(fd)) { - error("%s: no fd", __func__); - return -1; - } -#else - cmsg = CMSG_FIRSTHDR(&msg); - if (cmsg == NULL) { - error("%s: no message header", __func__); - return -1; - } - -#ifndef BROKEN_CMSG_TYPE - if (cmsg->cmsg_type != SCM_RIGHTS) { - error("%s: expected type %d got %d", __func__, - SCM_RIGHTS, cmsg->cmsg_type); - return -1; - } -#endif - fd = (*(int *)CMSG_DATA(cmsg)); -#endif - return fd; -#else - error("%s: file descriptor passing not supported", __func__); - return -1; -#endif -} |