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cifs: account for IPv6 in ses->serverName and clean up netbios name handling 

The current code for setting the session serverName is IPv4-specific.
Allow it to be an IPv6 address as well. Use NIP* macros to set the
format.

This also entails increasing the length of the serverName field, so
declare a new macro for RFC1001 name length and use it in the
appropriate places.

Finally, drop the unicode_server_Name field from TCP_Server_Info since
it's not used. We can add it back later if needed, but for now it just
wastes memory.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
hifive-unleashed-5.1
Jeff Layton 2008-12-01 15:23:50 -05:00 committed by Steve French
parent 954d7a1cf1
commit 8ecaf67a8e
2 changed files with 33 additions and 16 deletions
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11
fs/cifs/cifsglob.h
View File

@ -47,7 +47,11 @@
*/
#define CIFS_MAX_REQ 50
#define SERVER_NAME_LENGTH 15
#define RFC1001_NAME_LEN 15
#define RFC1001_NAME_LEN_WITH_NULL (RFC1001_NAME_LEN + 1)
/* currently length of NIP6_FMT */
#define SERVER_NAME_LENGTH 40
#define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1)
/* used to define string lengths for reversing unicode strings */
@ -125,8 +129,7 @@ struct TCP_Server_Info {
struct list_head smb_ses_list;
int srv_count; /* reference counter */
/* 15 character server name + 0x20 16th byte indicating type = srv */
char server_RFC1001_name[SERVER_NAME_LEN_WITH_NULL];
char unicode_server_Name[SERVER_NAME_LEN_WITH_NULL * 2];
char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
char *hostname; /* hostname portion of UNC string */
struct socket *ssocket;
union {
@ -171,7 +174,7 @@ struct TCP_Server_Info {
__u16 CurrentMid; /* multiplex id - rotating counter */
char cryptKey[CIFS_CRYPTO_KEY_SIZE];
/* 16th byte of RFC1001 workstation name is always null */
char workstation_RFC1001_name[SERVER_NAME_LEN_WITH_NULL];
char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
__u32 sequence_number; /* needed for CIFS PDU signature */
struct mac_key mac_signing_key;
char ntlmv2_hash[16];

38
fs/cifs/connect.c
View File

@ -1690,22 +1690,30 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
if (ses_init_buf) {
ses_init_buf->trailer.session_req.called_len = 32;
if (target_name && (target_name[0] != 0)) {
rfc1002mangle(ses_init_buf->trailer.session_req.called_name,
target_name, 16);
rfc1002mangle(ses_init_buf->trailer.
session_req.called_name,
target_name,
RFC1001_NAME_LEN_WITH_NULL);
} else {
rfc1002mangle(ses_init_buf->trailer.session_req.called_name,
DEFAULT_CIFS_CALLED_NAME, 16);
rfc1002mangle(ses_init_buf->trailer.
session_req.called_name,
DEFAULT_CIFS_CALLED_NAME,
RFC1001_NAME_LEN_WITH_NULL);
}
ses_init_buf->trailer.session_req.calling_len = 32;
/* calling name ends in null (byte 16) from old smb
convention. */
if (netbios_name && (netbios_name[0] != 0)) {
rfc1002mangle(ses_init_buf->trailer.session_req.calling_name,
netbios_name, 16);
rfc1002mangle(ses_init_buf->trailer.
session_req.calling_name,
netbios_name,
RFC1001_NAME_LEN_WITH_NULL);
} else {
rfc1002mangle(ses_init_buf->trailer.session_req.calling_name,
"LINUX_CIFS_CLNT", 16);
rfc1002mangle(ses_init_buf->trailer.
session_req.calling_name,
"LINUX_CIFS_CLNT",
RFC1001_NAME_LEN_WITH_NULL);
}
ses_init_buf->trailer.session_req.scope1 = 0;
ses_init_buf->trailer.session_req.scope2 = 0;
@ -2194,9 +2202,11 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
}
rc = 0;
memcpy(srvTcp->workstation_RFC1001_name,
volume_info.source_rfc1001_name, 16);
volume_info.source_rfc1001_name,
RFC1001_NAME_LEN_WITH_NULL);
memcpy(srvTcp->server_RFC1001_name,
volume_info.target_rfc1001_name, 16);
volume_info.target_rfc1001_name,
RFC1001_NAME_LEN_WITH_NULL);
srvTcp->sequence_number = 0;
INIT_LIST_HEAD(&srvTcp->tcp_ses_list);
INIT_LIST_HEAD(&srvTcp->smb_ses_list);
@ -2235,8 +2245,12 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
/* new SMB session uses our srvTcp ref */
pSesInfo->server = srvTcp;
sprintf(pSesInfo->serverName, "%u.%u.%u.%u",
NIPQUAD(sin_server->sin_addr.s_addr));
if (addr.sa_family == AF_INET6)
sprintf(pSesInfo->serverName, NIP6_FMT,
NIP6(sin_server6->sin6_addr));
else
sprintf(pSesInfo->serverName, NIPQUAD_FMT,
NIPQUAD(sin_server->sin_addr.s_addr));
write_lock(&cifs_tcp_ses_lock);
list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list);