[Samba] Cannot open sam.ldb [Was: dlz_bind9.so not found]

[Adam Tauno Williams]

On Tue, 2011-12-06 at 10:47 -0500, Adam Tauno Williams wrote:
> On Sun, 2011-12-04 at 08:45 +0000, Marcel Ritter wrote:
> > the last configuration is the correct one.
> > However you may have to set LD_LIBRARY_PATH to the
> > directory containing libsamdb.so.0 (or other libraries it may complain
> > about during startup).
> 
> I'm also using bind-9.8.1 on openSUSE 12.1 x86_64 and seeing something
> like the same problem.
> 
> I run bind as -
>   named -4 -c /etc/named.conf -g -u named -d  65535
> 06-Dec-2011 10:43:20.486 Loading 'AD DNS Zone' using driver dlopen
> 06-Dec-2011 10:43:20.486 Loading SDLZ driver.
> 06-Dec-2011 10:43:20.562 samba_dlz: Failed to connect
> to /opt/s4/private/dns/sam.ldb
> 06-Dec-2011 10:43:20.563 dlz_dlopen of 'AD DNS Zone' failed
> 06-Dec-2011 10:43:20.563 SDLZ driver failed to load.
> 06-Dec-2011 10:43:20.563 DLZ driver failed to load.
> Does that mean it loaded the samba_dlz driver?  [I have /opt/s4/lib
> in /etc/ld.so.conf.d/s4.conf, and have run /sbin/ldconfig]
> The group named has rw- for /opt/s4/private/dns/sam.ldb
> It doesn't seem terribly informative.


Via strace I clearly see -
2434  mmap(NULL, 2105528, PROT_READ|PROT_EXEC, MAP_PRIVATE|
MAP_DENYWRITE, 9, 0) = 0x7fc8f850c000
2434  mprotect(0x7fc8f850e000, 2093056, PROT_NONE) = 0
2434  mmap(0x7fc8f870d000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED|MAP_DENYWRITE, 9, 0x1000) = 0x7fc8f870d000
2434  close(9)                          = 0
2434  mprotect(0x7fc8f870d000, 4096, PROT_READ) = 0
2434  stat("/opt/s4/modules/ldb", {st_mode=S_IFDIR|0755,
st_size=4096, ...}) = 0
2434  stat("/opt/s4/modules/ldb", {st_mode=S_IFDIR|0755,
st_size=4096, ...}) = 0
2434  stat("/opt/s4/private/dns/sam.ldb", 0x7fc9123692a0) = -1 EACCES
(Permission denied)
2434  open("/opt/s4/private/dns/sam.ldb", O_RDWR|O_CREAT, 0600) = -1
EACCES (Permission denied)
2434  stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2202, ...})
= 0

after it has opened a bunch of Samba libraries and read
from /opt/s4/etc/smb.conf

In /etc/selinux/config I have SELINUX=disabled