-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <unistd.h>
#include <fcntl.h>
+#include <unistd.h>
-#include "util.h"
-#include "process-util.h"
+#include "bus-container.h"
#include "bus-internal.h"
#include "bus-socket.h"
-#include "bus-container.h"
+#include "fd-util.h"
+#include "process-util.h"
+#include "util.h"
int bus_container_connect_socket(sd_bus *b) {
+ _cleanup_close_pair_ int pair[2] = { -1, -1 };
_cleanup_close_ int pidnsfd = -1, mntnsfd = -1, usernsfd = -1, rootfd = -1;
pid_t child;
siginfo_t si;
- int r;
+ int r, error_buf = 0;
+ ssize_t n;
assert(b);
assert(b->input_fd < 0);
bus_socket_setup(b);
+ if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) < 0)
+ return -errno;
+
child = fork();
if (child < 0)
return -errno;
if (child == 0) {
pid_t grandchild;
+ pair[0] = safe_close(pair[0]);
+
r = namespace_enter(pidnsfd, mntnsfd, -1, usernsfd, rootfd);
if (r < 0)
- _exit(255);
+ _exit(EXIT_FAILURE);
/* We just changed PID namespace, however it will only
* take effect on the children we now fork. Hence,
grandchild = fork();
if (grandchild < 0)
- _exit(255);
+ _exit(EXIT_FAILURE);
if (grandchild == 0) {
r = connect(b->input_fd, &b->sockaddr.sa, b->sockaddr_size);
if (r < 0) {
- if (errno == EINPROGRESS)
- _exit(1);
-
- _exit(255);
+ /* Try to send error up */
+ error_buf = errno;
+ (void) write(pair[1], &error_buf, sizeof(error_buf));
+ _exit(EXIT_FAILURE);
}
_exit(EXIT_SUCCESS);
r = wait_for_terminate(grandchild, &si);
if (r < 0)
- _exit(255);
+ _exit(EXIT_FAILURE);
if (si.si_code != CLD_EXITED)
- _exit(255);
+ _exit(EXIT_FAILURE);
_exit(si.si_status);
}
+ pair[1] = safe_close(pair[1]);
+
r = wait_for_terminate(child, &si);
if (r < 0)
return r;
+ n = read(pair[0], &error_buf, sizeof(error_buf));
+ if (n < 0)
+ return -errno;
+
+ if (n > 0) {
+ if (n != sizeof(error_buf))
+ return -EIO;
+
+ if (error_buf < 0)
+ return -EIO;
+
+ if (error_buf == EINPROGRESS)
+ return 1;
+
+ if (error_buf > 0)
+ return -error_buf;
+ }
+
if (si.si_code != CLD_EXITED)
return -EIO;
- if (si.si_status == 1)
- return 1;
-
if (si.si_status != EXIT_SUCCESS)
return -EIO;
if (r < 0)
return r;
- if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0)
+ if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, pair) < 0)
return -errno;
child = fork();
_exit(EXIT_FAILURE);
}
- cmsg = CMSG_FIRSTHDR(&mh);
- cmsg->cmsg_level = SOL_SOCKET;
- cmsg->cmsg_type = SCM_RIGHTS;
- cmsg->cmsg_len = CMSG_LEN(sizeof(int));
- memcpy(CMSG_DATA(cmsg), &fd, sizeof(int));
-
- mh.msg_controllen = cmsg->cmsg_len;
-
- if (sendmsg(pair[1], &mh, MSG_NOSIGNAL) < 0)
+ r = send_one_fd(pair[1], fd, 0);
+ if (r < 0)
_exit(EXIT_FAILURE);
_exit(EXIT_SUCCESS);