** Description changed:
Since updating to the 4.4.0-2 kernel recvmsg() fails SCM_CREDENTIALS
request with EOPNOTSUPP.
This manifests as a test failure in Mir:
- [ RUN ] PromptSessionClientAPI.client_pid_is_associated_with_session
- unknown file: Failure
+ [ RUN ] PromptSessionClientAPI.client_pid_is_associated_with_session
+ unknown file: Failure
Test case:
- #include <gtest/gtest.h>
- #include <gmock/gmock.h>
+ #include <stdlib.h>
+ #include <stdio.h>
#include <sys/socket.h>
#include <sys/stat.h>
+ #include <assert.h>
+ #include <errno.h>
+ #include <string.h>
- TEST(IsItBroken, recvmsg)
+ int main()
{
- using namespace testing;
-
enum { server, client, size };
int socket_fd[size];
int const opt = 1;
- ASSERT_THAT(socketpair(AF_LOCAL, SOCK_STREAM, 0, socket_fd), Eq(0));
+ assert(socketpair(AF_LOCAL, SOCK_STREAM, 0, socket_fd) == 0);
- auto const msg = "A random message";
+ char const msg[] = "A random message";
send(socket_fd[client], msg, sizeof msg, MSG_DONTWAIT | MSG_NOSIGNAL);
- ASSERT_THAT(setsockopt(socket_fd[server], SOL_SOCKET, SO_PASSCRED,
- &opt, sizeof(opt)), Ne(-1));
+ assert(setsockopt(socket_fd[server], SOL_SOCKET, SO_PASSCRED, &opt,
+ sizeof(opt)) != -1);
union {
struct cmsghdr cmh;
- char control[CMSG_SPACE(sizeof(ucred))];
+ char control[CMSG_SPACE(sizeof(ucred))];
} control_un;
control_un.cmh.cmsg_len = CMSG_LEN(sizeof(ucred));
control_un.cmh.cmsg_level = SOL_SOCKET;
control_un.cmh.cmsg_type = SCM_CREDENTIALS;
msghdr msgh;
- msgh.msg_name = nullptr;
+ msgh.msg_name = NULL;
msgh.msg_namelen = 0;
- msgh.msg_iov = nullptr;
+ msgh.msg_iov = NULL;
msgh.msg_iovlen = 0;
msgh.msg_control = control_un.control;
msgh.msg_controllen = sizeof(control_un.control);
errno = 0;
- EXPECT_THAT(recvmsg(socket_fd[server], &msgh, MSG_PEEK), Ne(-1))
- << "Error: " << strerror(errno);
-
- for (auto socket : socket_fd) close(socket);
+ if (recvmsg(socket_fd[server], &msgh, MSG_PEEK) == -1)
+ {
+ printf("Error: %s\n", strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ else
+ {
+ printf("Success!\n");
+ exit(EXIT_SUCCESS);
+ }
}
** Changed in: mir
Importance: High => Critical
--
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https://bugs.launchpad.net/bugs/1540731
Title:
SocketMessenger::update_session_creds() fails to get client PID,
causing "[ FAILED ]
PromptSessionClientAPI.client_pid_is_associated_with_session"
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