search for: cmsg_level

...t debug1: session_new: session 0 debug3: mm_pty_allocate: waiting for MONITOR_ANS_PTY debug3: mm_request_receive_expect entering: type 26 debug3: mm_request_receive entering debug3: mm_request_send entering: type 26 mm_receive_fd: expected type 1 got 1074276337 It seems to be a bug in 2.0 kernels, cmsg_level and cmsg_type returned by recvmsg() make no sense. I built a test program (which I will attach) from code from monitor_fdpass.c. After the fd pass, a 2.0.38 kernel gives: (gdb) print *cmsg $1 = {cmsg_len = 16, cmsg_level = 134514016, cmsg_type = -1073742828, __cmsg_data = 0xbffffc08 "\0...

Hi All-- First, thanks to Timo for solving my last issue. I got dovecot up and running on one of my machines, and it does exactly what I want. Now I'm trying to install dovecot on an older box (glibc 2.0.7 Linux kernel 2.0.36), and encountering some problems: -- firstly autoconf/automake does not seem to correctly deal with the madvise function on this system. It detects that we don't

...gt; fails: > > > > recvmsg(0, {msg_name(28)={sa_family=AF_INET6, sin6_port=htons(34500), inet_pton(AF_INET6, "::ffff:10.0.0.192", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, msg_iov(1)=[{"\0\1pxelinux.0\0netascii\0", 65468}], msg_controllen=40, {cmsg_len=36, cmsg_level=SOL_IPV6, cmsg_type=, ...}, msg_flags=0}, 0) = 22 > > [..] > > [pid 3757] socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 0 > > [..] > > [pid 3757] bind(0, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("10.0.0.2")}, 16) = 0 > > [pid 3757] connect(0,...

...L) = 1 (in [4]) setsockopt(4, SOL_IP, IP_PKTINFO, [1], 4) = 0 recvmsg(4, {msg_name(16)={sa_family=AF_INET, sin_port=htons(57109), sin_addr=inet_addr("169.254.1.4")}, msg_iov(1)=[{"\0\1dal\0octet\0tsize\0000\0blksize\0001408\0"..., 65468}], msg_controllen=24, {cmsg_len=24, cmsg_level=SOL_IP, cmsg_type=, ...}, msg_flags=0}, 0) = 33 socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 5 connect(5, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("169.254.1.1")}, 16) = 0 getsockname(5, {sa_family=AF_INET, sin_port=htons(58102), sin_addr=inet_addr("169.254.1.1")},...

...ata; >+ msg.msg_controllen = sizeof(cmsg_data); >+ >+ ret = recvmsg(fd, &msg, MSG_ERRQUEUE); >+ if (ret == -1) >+ return; >+ >+ cm = CMSG_FIRSTHDR(&msg); >+ if (!cm) { >+ fprintf(stderr, "cmsg: no cmsg\n"); >+ return; >+ } >+ >+ if (cm->cmsg_level != SOL_VSOCK) { >+ fprintf(stderr, "cmsg: unexpected 'cmsg_level'\n"); >+ return; >+ } >+ >+ if (cm->cmsg_type) { >+ fprintf(stderr, "cmsg: unexpected 'cmsg_type'\n"); >+ return; >+ } >+ >+ serr = (void *)CMSG_DATA(cm); >+...

...zeof(int))); + + data[0] = 'F'; + iov[0].iov_base = data; + iov[0].iov_len = 1; + + message.msg_iov = iov; + message.msg_iovlen = 1; + + message.msg_control = buffer; + message.msg_controllen = CMSG_SPACE(sizeof(int)); + + control_message = CMSG_FIRSTHDR(&message); + control_message->cmsg_level = SOL_SOCKET; + control_message->cmsg_type = SCM_RIGHTS; + control_message->cmsg_len = CMSG_LEN(sizeof(int)); + + *((int *) CMSG_DATA(control_message)) = fd_to_send; + + message.msg_controllen = control_message->cmsg_len; + + do ret = sendmsg(socket, &message, 0); + while (ret == -1 &a...

...ails: >>> >>> recvmsg(0, {msg_name(28)={sa_family=AF_INET6, sin6_port=htons(34500), inet_pton(AF_INET6, "::ffff:10.0.0.192", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, msg_iov(1)=[{"\0\1pxelinux.0\0netascii\0", 65468}], msg_controllen=40, {cmsg_len=36, cmsg_level=SOL_IPV6, cmsg_type=, ...}, msg_flags=0}, 0) = 22 >>> [..] >>> [pid 3757] socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 0 >>> [..] >>> [pid 3757] bind(0, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("10.0.0.2")}, 16) = 0 >>> [pid 37...

...-191,4 +191,21 @@ struct sockaddr_vm { #define IOCTL_VM_SOCKETS_GET_LOCAL_CID _IO(7, 0xb9) +/* MSG_ZEROCOPY notifications are encoded in the standard error format, + * sock_extended_err. See Documentation/networking/msg_zerocopy.rst in + * kernel source tree for more details. + */ + +/* 'cmsg_level' field value of 'struct cmsghdr' for notification parsing + * when MSG_ZEROCOPY flag is used on transmissions. + */ + +#define SOL_VSOCK 287 + +/* 'cmsg_type' field value of 'struct cmsghdr' for notification parsing + * when MSG_ZEROCOPY flag is used on transmissions. +...

...-191,4 +191,21 @@ struct sockaddr_vm { #define IOCTL_VM_SOCKETS_GET_LOCAL_CID _IO(7, 0xb9) +/* MSG_ZEROCOPY notifications are encoded in the standard error format, + * sock_extended_err. See Documentation/networking/msg_zerocopy.rst in + * kernel source tree for more details. + */ + +/* 'cmsg_level' field value of 'struct cmsghdr' for notification parsing + * when MSG_ZEROCOPY flag is used on transmissions. + */ + +#define SOL_VSOCK 287 + +/* 'cmsg_type' field value of 'struct cmsghdr' for notification parsing + * when MSG_ZEROCOPY flag is used on transmissions. +...

...-191,4 +191,21 @@ struct sockaddr_vm { #define IOCTL_VM_SOCKETS_GET_LOCAL_CID _IO(7, 0xb9) +/* MSG_ZEROCOPY notifications are encoded in the standard error format, + * sock_extended_err. See Documentation/networking/msg_zerocopy.rst in + * kernel source tree for more details. + */ + +/* 'cmsg_level' field value of 'struct cmsghdr' for notification parsing + * when MSG_ZEROCOPY flag is used on transmissions. + */ + +#define SOL_VSOCK 287 + +/* 'cmsg_type' field value of 'struct cmsghdr' for notification parsing + * when MSG_ZEROCOPY flag is used on transmissions. +...

...msg.msg_iov = iov; + msg.msg_iovlen = 1; + + /* Initialize the zero byte */ + buf[0] = 0; + + /* Initialize the control data */ + if (NULL == cmptr) { + cmptr = malloc (controllen); + if (NULL == cmptr) { + perror ("malloc"); + exit (1); + } + } + cmptr->cmsg_level = SOL_SOCKET; + cmptr->cmsg_type = SCM_RIGHTS; + cmptr->cmsg_len = controllen; + + /* Add control header to the message */ + msg.msg_control = cmptr; + msg.msg_controllen = controllen; + + /* Add STDOUT to the control data */ + *(int *)CMSG_DATA (cmptr) = STDOUT_FILENO; + + if...

...ccrights = (caddr_t)&nfd; + msg.msg_accrightslen = sizeof(nfd); +#else + memset(&cmsgbuf, 0, sizeof(cmsgbuf)); + 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) = nfd; +#endif - iov.iov_base = &c; - iov.iov_len = 1; - mh.msg_iov = &iov; - mh.msg_iovlen = 1; + vec.iov_base = &ch; + vec.iov_len = 1; + msg.msg_iov = &vec; + msg.msg_iovlen = 1; bzero(&pfd, size...

On 24/02/15 21:56, Tim Rice wrote: > On Wed, 25 Feb 2015, Damien Miller wrote: > > | On Tue, 24 Feb 2015, Tom G. Christensen wrote: > | > | > I've switched to HEAD in the git repo and it now builds on Solaris > | > 2.6, 7, 8 and 9 but the testsuite still cannot be built due to the > | > missing <err.h>. > > The err.h issue is fixes but there still

...d(4, "\2\0\0\0\r\0\0\0\6\0\0\0hosts\0", 18, MSG_NOSIGNAL) = 18 poll([{fd=4, events=POLLIN|POLLERR|POLLHUP}], 1, 5000) = 1 ([{fd=4, revents=POLLIN}]) recvmsg(4, {msg_name(0)=NULL, msg_iov(2)=[{"hosts\0", 6}, {"\270O\3\0\0\0\0\0", 8}], msg_controllen=16, {cmsg_len=16, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, {5}}, msg_flags=0}, 0) = 14 mmap2(NULL, 217016, PROT_READ, MAP_SHARED, 5, 0) = 0xb7f54000 close(5) = 0 close(4) = 0 socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 4 connect(4, {sa_family=AF_INET, sin_port=hto...

...crights = (caddr_t)&fd; > msg.msg_accrightslen = sizeof(fd); > #else > msg.msg_control = (caddr_t)tmp; > msg.msg_controllen = CMSG_LEN(sizeof(int)); > 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; > > if ((n = sendmsg(socket, &msg, 0...

Hello, I have a question regarding signed NTP support for Samba4 on Ubuntu 12.04. I have followed most of the steps outlined here: https://wiki.samba.org/index.php/Configure_NTP These steps I did differently are: * I did not install from source because the latest Ubuntu package for ntp available on Ubuntu 12.04 includes ntp-signd support already * I did not install Samba4 to /usr/local/samba, so

...0passwd\0", 19, MSG_NOSIGNAL) = 19 23:56:00.399299 poll([{fd=19, events=POLLIN|POLLERR|POLLHUP, revents=POLLIN|POLLHUP}], 1, 5000) = 1 23:56:00.399361 recvmsg(19, {msg_name(0)=NULL, msg_iov(2)=[{"passwd\0", 7}, {"\270O\3\0\0\0\0\0", 8}], msg_controllen=16, {cmsg_len=16, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, {20}}, msg_flags=0}, 0x40000000 /* MSG_??? */) = 15 23:56:00.399445 mmap2(NULL, 217016, PROT_READ, MAP_SHARED, 20, 0xffaf895c) = 0xf754f000 23:56:00.399498 close(20) = 0 23:56:00.399537 close(19) = 0 23:56:00.400433 access("/var/r...

as the next klibc release 1.5.16 looks like shaping up, I have a trouble to build that for Debian. currently I build depent on linux-libc-dev, I don't know what against I can build latest klibc, see klibc fails to build due too: make -C linux/ ARCH=x86_64 INSTALL_HDR_PATH=debian/tmp/usr/lib/klibc/ headers_install make[3]: *** No rule to make target `headers_install'. Stop. make[2]: ***

Hi, I'm running a CentOS 4. server and I sometimes face a weird problem. It is a weird performance problem, and here is how I discovered it. This server runs OpenVZ virtual machines, and one of them is an asterisk server for my personal use. The first symptom of the problem is that the voice quality became flaky. So I logged on the server to see what could be eating cpu cycles, when I

Hi, This is a proof of concept of GPU forwarding for Linux guest on Linux host. I'd like to get comments and suggestions from community before I put more time on it. To summarize what it is: 1. It's a solution to bring GPU acceleration for Linux vm guest on Linux host. It could works with different GPU although the current proof of concept only works with Intel GPU. 2. The basic idea