{
int pid;
+if (daemon_notifier_fd >= 0)
+ {
+ close(daemon_notifier_fd);
+ daemon_notifier_fd = -1;
+#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+ {
+ uschar * s = string_sprintf("%s/%s", spool_directory, NOTIFIER_SOCKET_NAME);
+ DEBUG(D_any) debug_printf("unlinking notifier socket %s\n", s);
+ Uunlink(s);
+ }
+#endif
+ }
+
if (f.running_in_test_harness || write_pid)
{
if ((pid = fork()) == 0)
{
int fd;
const uschar * where;
-struct sockaddr_un sun = {.sun_family = AF_UNIX};
+struct sockaddr_un sa_un = {.sun_family = AF_UNIX};
int len;
-DEBUG(D_any) debug_printf("creating notifier socket\n");
+DEBUG(D_any) debug_printf("creating notifier socket ");
-where = US"socket";
#ifdef SOCK_CLOEXEC
-if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0)
- goto bad;
+if ((fd = socket(PF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0)
+ { where = US"socket"; goto bad; }
#else
-if ((fd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0)
- goto bad;
+if ((fd = socket(PF_UNIX, SOCK_DGRAM, 0)) < 0)
+ { where = US"socket"; goto bad; }
(void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
#endif
-sun.sun_path[0] = 0; /* Abstract local socket addr - Linux-specific? */
+#ifdef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+sa_un.sun_path[0] = 0; /* Abstract local socket addr - Linux-specific? */
len = offsetof(struct sockaddr_un, sun_path) + 1
- + snprintf(sun.sun_path+1, sizeof(sun.sun_path)-1, "%s", NOTIFIER_SOCKET_NAME);
+ + snprintf(sa_un.sun_path+1, sizeof(sa_un.sun_path)-1, "%s", NOTIFIER_SOCKET_NAME);
+DEBUG(D_any) debug_printf("@%s\n", sa_un.sun_path+1);
+#else /* filesystem-visible and persistent; will neeed removal */
+len = offsetof(struct sockaddr_un, sun_path)
+ + snprintf(sa_un.sun_path, sizeof(sa_un.sun_path), "%s/%s",
+ spool_directory, NOTIFIER_SOCKET_NAME);
+DEBUG(D_any) debug_printf("%s\n", sa_un.sun_path);
+#endif
-where = US"bind";
-if (bind(fd, (const struct sockaddr *)&sun, len) < 0)
- goto bad;
+if (bind(fd, (const struct sockaddr *)&sa_un, len) < 0)
+ { where = US"bind"; goto bad; }
-where = US"SO_PASSCRED";
-if (setsockopt(fd, SOL_SOCKET,
#ifdef SO_PASSCRED /* Linux */
- SO_PASSCRED,
-#elif defined(LOCAL_CREDS) /* BSD-ish */
- LOCAL_CREDS,
-#else
-# error no SO_PASSCRED
+if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on)) < 0)
+ { where = US"SO_PASSCRED"; goto bad2; }
+#elif defined(LOCAL_CREDS) /* FreeBSD-ish */
+if (setsockopt(fd, 0, LOCAL_CREDS, &on, sizeof(on)) < 0)
+ { where = US"LOCAL_CREDS"; goto bad2; }
#endif
- &on, sizeof(on)) < 0)
- goto bad;
/* debug_printf("%s: fd %d\n", __FUNCTION__, fd); */
daemon_notifier_fd = fd;
return;
+bad2:
+#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
+ Uunlink(sa_un.sun_path);
+#endif
bad:
- log_write(0, LOG_MAIN|LOG_PANIC, "%s: %s: %s",
+ log_write(0, LOG_MAIN|LOG_PANIC, "%s %s: %s",
__FUNCTION__, where, strerror(errno));
+ close(fd);
+ return;
}
daemon_notification(void)
{
uschar buf[256], cbuf[256];
-struct sockaddr_un sun;
-struct iovec iov = {.iov_base = buf, .iov_len = sizeof(buf)-1};
-struct msghdr msg = { .msg_name = &sun,
- .msg_namelen = sizeof(sun),
+struct sockaddr_un sa_un;
+struct iovec iov = {.iov_base = (void *)buf, /* ? cast needed for Solaris compiler */
+ .iov_len = sizeof(buf)-1
+ };
+struct msghdr msg = { .msg_name = &sa_un,
+ .msg_namelen = sizeof(sa_un),
.msg_iov = &iov,
.msg_iovlen = 1,
+#if !defined(__sun)
.msg_control = cbuf,
.msg_controllen = sizeof(cbuf)
+#endif
};
ssize_t sz;
struct cmsghdr * cp;
#ifdef notdef
debug_printf("addrlen %d\n", msg.msg_namelen);
#endif
-DEBUG(D_queue_run) debug_printf("%s from addr%s '%s'\n", __FUNCTION__,
- *sun.sun_path ? "" : " abstract", sun.sun_path+ (*sun.sun_path ? 0 : 1));
+DEBUG(D_queue_run) debug_printf("%s from addr '%s%.*s'\n", __FUNCTION__,
+ *sa_un.sun_path ? "" : "@",
+ (int)msg.msg_namelen - (*sa_un.sun_path ? 0 : 1),
+ sa_un.sun_path + (*sa_un.sun_path ? 0 : 1));
/* Refuse to handle the item unless the peer has good credentials */
#ifdef SCM_CREDENTIALS
#elif defined(LOCAL_CREDS) && defined(SCM_CREDS)
# define EXIM_SCM_CR_TYPE SCM_CREDS
#else
-# error no SCM creds knowlege
+ /* The OS has no way to get the creds of the caller (for a unix/datagram socket.
+ Punt; don't try to check. */
#endif
+#ifdef EXIM_SCM_CR_TYPE
for (struct cmsghdr * cp = CMSG_FIRSTHDR(&msg);
cp;
cp = CMSG_NXTHDR(&msg, cp))
if (cp->cmsg_level == SOL_SOCKET && cp->cmsg_type == EXIM_SCM_CR_TYPE)
{
-#ifdef SCM_CREDENTIALS /* Linux */
+# ifdef SCM_CREDENTIALS /* Linux */
struct ucred * cr = (struct ucred *) CMSG_DATA(cp);
if (cr->uid && cr->uid != exim_uid)
{
DEBUG(D_queue_run) debug_printf("%s: sender creds pid %d uid %d gid %d\n",
__FUNCTION__, (int)cr->pid, (int)cr->uid, (int)cr->gid);
return FALSE;
-#elif defined(LOCAL_CREDS) /* BSD-ish */
+ }
+# elif defined(LOCAL_CREDS) /* BSD-ish */
struct sockcred * cr = (struct sockcred *) CMSG_DATA(cp);
if (cr->sc_uid && cr->sc_uid != exim_uid)
{
DEBUG(D_queue_run) debug_printf("%s: sender creds pid ??? uid %d gid %d\n",
__FUNCTION__, (int)cr->sc_uid, (int)cr->sc_gid);
return FALSE;
-#endif
}
+# endif
break;
}
+#endif
buf[sz] = 0;
switch (buf[0])
debug_printf("%s: queue size request: %s\n", __FUNCTION__, buf);
if (sendto(daemon_notifier_fd, buf, len, 0,
- (const struct sockaddr *)&sun, msg.msg_namelen) < 0)
+ (const struct sockaddr *)&sa_un, msg.msg_namelen) < 0)
log_write(0, LOG_MAIN|LOG_PANIC,
"%s: sendto: %s\n", __FUNCTION__, strerror(errno));
return FALSE;
projects / exim.git / blobdiff