If we have a share mounted by non-standard port and try to mount another share on the same host with standard port, we connect to the first share again - that's wrong. This patch fixes this bug.
Signed-off-by: Pavel Shilovsky <[email protected]> --- fs/cifs/connect.c | 42 +++++++++++++++++++++++++++++++++++++----- 1 files changed, 37 insertions(+), 5 deletions(-) diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index b90c741..41f002f 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1453,6 +1453,40 @@ srcip_matches(struct sockaddr *srcaddr, struct sockaddr *rhs) } } +/* + * If no port is specified in addr structure, we try to match with 445 port + * and if it fails - with 139 ports. It should be called only if address + * families of server and addr are equal. + */ +static bool +match_port(struct TCP_Server_Info *server, struct sockaddr *addr) +{ + unsigned short int port, *sport; + + switch (addr->sa_family) { + case AF_INET: + sport = &((struct sockaddr_in *) &server->dstaddr)->sin_port; + port = ((struct sockaddr_in *) addr)->sin_port; + break; + case AF_INET6: + sport = &((struct sockaddr_in6 *) &server->dstaddr)->sin6_port; + port = ((struct sockaddr_in6 *) addr)->sin6_port; + break; + default: + WARN_ON(1); + return false; + } + + if (!port) { + port = htons(CIFS_PORT); + if (port == *sport) + return true; + + port = htons(RFC1001_PORT); + } + + return port == *sport; +} static bool match_address(struct TCP_Server_Info *server, struct sockaddr *addr, @@ -1466,8 +1500,6 @@ match_address(struct TCP_Server_Info *server, struct sockaddr *addr, if (addr4->sin_addr.s_addr != srv_addr4->sin_addr.s_addr) return false; - if (addr4->sin_port && addr4->sin_port != srv_addr4->sin_port) - return false; break; } case AF_INET6: { @@ -1480,9 +1512,6 @@ match_address(struct TCP_Server_Info *server, struct sockaddr *addr, return false; if (addr6->sin6_scope_id != srv_addr6->sin6_scope_id) return false; - if (addr6->sin6_port && - addr6->sin6_port != srv_addr6->sin6_port) - return false; break; } default: @@ -1555,6 +1584,9 @@ cifs_find_tcp_session(struct sockaddr *addr, struct smb_vol *vol) (struct sockaddr *)&vol->srcaddr)) continue; + if (!match_port(server, addr)) + continue; + if (!match_security(server, vol)) continue; -- 1.7.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
