Andrew Bartlett <[email protected]> writes: > On Fri, 2012-04-27 at 10:56 -0400, Nikolaus Rath wrote: >> On 04/26/2012 09:13 PM, Jeremy Allison wrote: >> > On Wed, Apr 25, 2012 at 10:04:30AM -0400, Nikolaus Rath wrote: >> >> Hello, >> >> >> >> The qemu emulator has a feature to fork a samba instance for file >> >> sharing with the emulated hosts. It communicates with smbd over stdin. >> >> The generated configuration file contains a "smb ports = 0" directive to >> >> prevent smbd from listening to any ports. >> >> >> >> Unfortunately, with at least Samba 3.6.4 this causes a segfault >> >> instead: >> >> >> >> [0] vostro:/tmp/qemu-smb.6836-0# smbd -i -s smb.conf >> >> Unable to setup corepath for smbd: Operation not permitted >> >> smbd version 3.6.4 started. >> >> Copyright Andrew Tridgell and the Samba Team 1992-2011 >> >> open_sockets_smbd: No sockets available to bind to. >> >> =============================================================== >> >> Abnormal server exit: open_sockets_smbd() failed >> >> =============================================================== >> >> BACKTRACE: 6 stack frames: >> >> #0 smbd(log_stack_trace+0x1a) [0x7fe50c14f8ba] >> >> #1 smbd(+0x6a0743) [0x7fe50c3bd743] >> >> #2 smbd(+0x6a0a41) [0x7fe50c3bda41] >> >> #3 smbd(main+0xa52) [0x7fe50be26d42] >> >> #4 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) >> >> [0x7fe508ac0ead] >> >> #5 smbd(+0x10a6b9) [0x7fe50be276b9] >> >> >> >> >> >> Also, there is some confusion as to whether this option was actually >> >> ever necessary. >> >> >> >> Could someone clarify if something like this is still needed, or if >> >> Samba does the right think automatically? In the later case, has this >> >> always been the case or was it introduced in a specific version (and the >> >> "smb ports = 0" required before)? >> > >> > In fack looking at the current code in v3-6-test, so long as >> > you ensure that you run without the '-D' (deamonize) option, >> > and fd 0 is a socket (we use getsockopt(fd, SOL_SOCKET, SO_TYPE...) >> > to detect this) then we'll go into 'inetd' mode, which I >> > think is what you want. >> >> Yes. I am just wondering if this has always been the case, or if this is >> a recent feature and smb ports = 0 may have been required in earlier >> versions. > > This has always been the case. This (inetd) mode of operation is the > original mode of operation, well before we even had an smb.conf to put > 'smb ports' into. It remains supported, but isn't used much these days.
Great, thanks! I'll see if I can get this weird hack out of qemu then. Best, -Nikolaus -- »Time flies like an arrow, fruit flies like a Banana.« PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
