Hi Emanuel, sorry for not being helpful with the other problems, but
Unfortunately using a -current kernel is not an option just right now, because of kernel bugs. For a reason I have not yet tracked down, dovecot is broken (IPC between (pop|imap)-login and auth process is screwed), and sshd randomly cuts connexions because of an invalid HMAC. If the two problems rings a bell for someone, I am interested.
In case you are using dovecot2, try the attached patch. The problem is a change in the semantics of local domain socket addresses. Previously, they had a fixed size, and the path name contained within the address was therefor normally '\0'-terminated. Now the address is the common socket address part plus the pathname, where the terminating '\0' is _not_ part of the address. When the kernel copies out some local domain part, the user has to supply the terminator, if it wants to use the path as some ordinary string, e.g. in strlen. I haven't made up my mind on how to really fix this, but I tend to include the terminating '\0' within the address. Note that there are even programs within our own distribution which trigger core dumps due to this change (at least kdump does). Ciao, Wolfgang -- Wolfgang%Solfrank.net@localhost Wolfgang Solfrank
--- src/lib/net.c.orig 2013-11-24 16:45:57.000000000 +0100
+++ src/lib/net.c 2013-11-24 16:53:55.000000000 +0100
@@ -28,7 +28,10 @@
union sockaddr_union_unix {
struct sockaddr sa;
- struct sockaddr_un un;
+ struct {
+ struct sockaddr_un un;
+ char terminator;
+ } _un;
};
#ifdef HAVE_IPV6
@@ -280,8 +283,8 @@
int fd, ret;
memset(&sa, 0, sizeof(sa));
- sa.un.sun_family = AF_UNIX;
- if (i_strocpy(sa.un.sun_path, path, sizeof(sa.un.sun_path)) < 0) {
+ sa._un.un.sun_family = AF_UNIX;
+ if (i_strocpy(sa._un.un.sun_path, path, sizeof(sa._un.un.sun_path)) <
0) {
/* too long path */
#ifdef ENAMETOOLONG
errno = ENAMETOOLONG;
@@ -744,13 +747,14 @@
union sockaddr_union_unix so;
socklen_t addrlen = sizeof(so);
+ memset(&so, 0, sizeof so);
if (getsockname(fd, &so.sa, &addrlen) < 0)
return -1;
- if (so.un.sun_family != AF_UNIX) {
+ if (so._un.un.sun_family != AF_UNIX) {
errno = ENOTSOCK;
return -1;
}
- *name_r = t_strdup(so.un.sun_path);
+ *name_r = t_strdup(so._un.un.sun_path);
return 0;
}
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