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Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

Browse Source 
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: use CreationTime like an i_generation field
  cifs: switch cifs_open and cifs_create to use CIFSSMBUnixSetFileInfo
  cifs: show "acl" in DebugData Features when it's compiled in
  cifs: move "ntlmssp" and "local_leases" options out of experimental code
  cifs: replace some hardcoded values with preprocessor constants
  cifs: remove unnecessary locking around sequence_number
  [CIFS] Fix minor merge conflict in fs/cifs/dir.c
  CIFS: Simplify cifs_open code
  CIFS: Simplify non-posix open stuff (try #2)
  CIFS: Add match_port check during looking for an existing connection (try #4)
  CIFS: Simplify ipv*_connect functions into one (try #4)
  cifs: Support NTLM2 session security during NTLMSSP authentication [try #5]
  cifs: don't overwrite dentry name in d_revalidate
This commit is contained in:
Linus Torvalds 2011-01-10 07:47:11 -08:00
commit f3ea597251
14 changed files with 443 additions and 539 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
fs/cifs/cache.c
View File

@ -64,7 +64,9 @@ static uint16_t cifs_server_get_key(const void *cookie_netfs_data,
void *buffer, uint16_t maxbuf)
{
const struct TCP_Server_Info *server = cookie_netfs_data;
const struct sockaddr *sa = (struct sockaddr *) &server->addr.sockAddr;
const struct sockaddr *sa = (struct sockaddr *) &server->dstaddr;
const struct sockaddr_in *addr = (struct sockaddr_in *) sa;
const struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) sa;
struct cifs_server_key *key = buffer;
uint16_t key_len = sizeof(struct cifs_server_key);
@ -76,16 +78,16 @@ static uint16_t cifs_server_get_key(const void *cookie_netfs_data,
*/
switch (sa->sa_family) {
case AF_INET:
key->family = server->addr.sockAddr.sin_family;
key->port = server->addr.sockAddr.sin_port;
key->addr[0].ipv4_addr = server->addr.sockAddr.sin_addr;
key->family = sa->sa_family;
key->port = addr->sin_port;
key->addr[0].ipv4_addr = addr->sin_addr;
key_len += sizeof(key->addr[0].ipv4_addr);
break;
case AF_INET6:
key->family = server->addr.sockAddr6.sin6_family;
key->port = server->addr.sockAddr6.sin6_port;
key->addr[0].ipv6_addr = server->addr.sockAddr6.sin6_addr;
key->family = sa->sa_family;
key->port = addr6->sin6_port;
key->addr[0].ipv6_addr = addr6->sin6_addr;
key_len += sizeof(key->addr[0].ipv6_addr);
break;

22
fs/cifs/cifs_debug.c
View File

@ -119,29 +119,27 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
"Display Internal CIFS Data Structures for Debugging\n"
"---------------------------------------------------\n");
seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
seq_printf(m, "Features: ");
seq_printf(m, "Features:");
#ifdef CONFIG_CIFS_DFS_UPCALL
seq_printf(m, "dfs");
seq_putc(m, ' ');
seq_printf(m, " dfs");
#endif
#ifdef CONFIG_CIFS_FSCACHE
seq_printf(m, "fscache");
seq_putc(m, ' ');
seq_printf(m, " fscache");
#endif
#ifdef CONFIG_CIFS_WEAK_PW_HASH
seq_printf(m, "lanman");
seq_putc(m, ' ');
seq_printf(m, " lanman");
#endif
#ifdef CONFIG_CIFS_POSIX
seq_printf(m, "posix");
seq_putc(m, ' ');
seq_printf(m, " posix");
#endif
#ifdef CONFIG_CIFS_UPCALL
seq_printf(m, "spnego");
seq_putc(m, ' ');
seq_printf(m, " spnego");
#endif
#ifdef CONFIG_CIFS_XATTR
seq_printf(m, "xattr");
seq_printf(m, " xattr");
#endif
#ifdef CONFIG_CIFS_ACL
seq_printf(m, " acl");
#endif
seq_putc(m, '\n');
seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);

10
fs/cifs/cifs_spnego.c
View File

@ -98,6 +98,8 @@ struct key *
cifs_get_spnego_key(struct cifsSesInfo *sesInfo)
{
struct TCP_Server_Info *server = sesInfo->server;
struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr;
struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr;
char *description, *dp;
size_t desc_len;
struct key *spnego_key;
@ -127,10 +129,10 @@ cifs_get_spnego_key(struct cifsSesInfo *sesInfo)
dp = description + strlen(description);
/* add the server address */
if (server->addr.sockAddr.sin_family == AF_INET)
sprintf(dp, "ip4=%pI4", &server->addr.sockAddr.sin_addr);
else if (server->addr.sockAddr.sin_family == AF_INET6)
sprintf(dp, "ip6=%pI6", &server->addr.sockAddr6.sin6_addr);
if (server->dstaddr.ss_family == AF_INET)
sprintf(dp, "ip4=%pI4", &sa->sin_addr);
else if (server->dstaddr.ss_family == AF_INET6)
sprintf(dp, "ip6=%pI6", &sa6->sin6_addr);
else
goto out;

6
fs/cifs/cifsencrypt.c
View File

@ -72,6 +72,7 @@ static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
return 0;
}
/* must be called with server->srv_mutex held */
int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server,
__u32 *pexpected_response_sequence_number)
{
@ -84,14 +85,12 @@ int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server,
if ((cifs_pdu->Flags2 & SMBFLG2_SECURITY_SIGNATURE) == 0)
return rc;
spin_lock(&GlobalMid_Lock);
cifs_pdu->Signature.Sequence.SequenceNumber =
cpu_to_le32(server->sequence_number);
cifs_pdu->Signature.Sequence.Reserved = 0;
*pexpected_response_sequence_number = server->sequence_number++;
server->sequence_number++;
spin_unlock(&GlobalMid_Lock);
rc = cifs_calculate_signature(cifs_pdu, server, smb_signature);
if (rc)
@ -149,6 +148,7 @@ static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
return rc;
}
/* must be called with server->srv_mutex held */
int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
__u32 *pexpected_response_sequence_number)
{
@ -162,14 +162,12 @@ int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
if ((cifs_pdu->Flags2 & SMBFLG2_SECURITY_SIGNATURE) == 0)
return rc;
spin_lock(&GlobalMid_Lock);
cifs_pdu->Signature.Sequence.SequenceNumber =
cpu_to_le32(server->sequence_number);
cifs_pdu->Signature.Sequence.Reserved = 0;
*pexpected_response_sequence_number = server->sequence_number++;
server->sequence_number++;
spin_unlock(&GlobalMid_Lock);
rc = cifs_calc_signature2(iov, n_vec, server, smb_signature);
if (rc)

17
fs/cifs/cifsfs.c
View File

@ -329,6 +329,8 @@ cifs_alloc_inode(struct super_block *sb)
cifs_inode->invalid_mapping = false;
cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */
cifs_inode->server_eof = 0;
cifs_inode->uniqueid = 0;
cifs_inode->createtime = 0;
/* Can not set i_flags here - they get immediately overwritten
to zero by the VFS */
@ -361,18 +363,19 @@ cifs_evict_inode(struct inode *inode)
static void
cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server)
{
struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr;
struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr;
seq_printf(s, ",addr=");
switch (server->addr.sockAddr.sin_family) {
switch (server->dstaddr.ss_family) {
case AF_INET:
seq_printf(s, "%pI4", &server->addr.sockAddr.sin_addr.s_addr);
seq_printf(s, "%pI4", &sa->sin_addr.s_addr);
break;
case AF_INET6:
seq_printf(s, "%pI6",
&server->addr.sockAddr6.sin6_addr.s6_addr);
if (server->addr.sockAddr6.sin6_scope_id)
seq_printf(s, "%%%u",
server->addr.sockAddr6.sin6_scope_id);
seq_printf(s, "%pI6", &sa6->sin6_addr.s6_addr);
if (sa6->sin6_scope_id)
seq_printf(s, "%%%u", sa6->sin6_scope_id);
break;
default:
seq_printf(s, "(unknown)");

9
fs/cifs/cifsglob.h
View File

@ -163,10 +163,7 @@ struct TCP_Server_Info {
char server_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
char *hostname; /* hostname portion of UNC string */
struct socket *ssocket;
union {
struct sockaddr_in sockAddr;
struct sockaddr_in6 sockAddr6;
} addr;
struct sockaddr_storage dstaddr;
struct sockaddr_storage srcaddr; /* locally bind to this IP */
wait_queue_head_t response_q;
wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/
@ -210,7 +207,7 @@ struct TCP_Server_Info {
char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */
/* 16th byte of RFC1001 workstation name is always null */
char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
__u32 sequence_number; /* needed for CIFS PDU signature */
__u32 sequence_number; /* for signing, protected by srv_mutex */
struct session_key session_key;
unsigned long lstrp; /* when we got last response from this server */
u16 dialect; /* dialect index that server chose */
@ -456,6 +453,7 @@ struct cifsInodeInfo {
bool invalid_mapping:1; /* pagecache is invalid */
u64 server_eof; /* current file size on server */
u64 uniqueid; /* server inode number */
u64 createtime; /* creation time on server */
#ifdef CONFIG_CIFS_FSCACHE
struct fscache_cookie *fscache;
#endif
@ -576,6 +574,7 @@ struct cifs_fattr {
u64 cf_uniqueid;
u64 cf_eof;
u64 cf_bytes;
u64 cf_createtime;
uid_t cf_uid;
gid_t cf_gid;
umode_t cf_mode;

5
fs/cifs/cifssmb.c
View File

@ -401,15 +401,12 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) {
cFYI(1, "Kerberos only mechanism, enable extended security");
pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
}
#ifdef CONFIG_CIFS_EXPERIMENTAL
else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
} else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) {
cFYI(1, "NTLMSSP only mechanism, enable extended security");
pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
}
#endif
count = 0;
for (i = 0; i < CIFS_NUM_PROT; i++) {

506
fs/cifs/connect.c
View File

@ -64,8 +64,8 @@ struct smb_vol {
char *UNC;
char *UNCip;
char *iocharset; /* local code page for mapping to and from Unicode */
char source_rfc1001_name[16]; /* netbios name of client */
char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */
char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
uid_t cred_uid;
uid_t linux_uid;
gid_t linux_gid;
@ -115,8 +115,8 @@ struct smb_vol {
#define TLINK_ERROR_EXPIRE (1 * HZ)
#define TLINK_IDLE_EXPIRE (600 * HZ)
static int ipv4_connect(struct TCP_Server_Info *server);
static int ipv6_connect(struct TCP_Server_Info *server);
static int ip_connect(struct TCP_Server_Info *server);
static int generic_ip_connect(struct TCP_Server_Info *server);
static void tlink_rb_insert(struct rb_root *root, struct tcon_link *new_tlink);
static void cifs_prune_tlinks(struct work_struct *work);
@ -200,10 +200,9 @@ cifs_reconnect(struct TCP_Server_Info *server)
while ((server->tcpStatus != CifsExiting) &&
(server->tcpStatus != CifsGood)) {
try_to_freeze();
if (server->addr.sockAddr6.sin6_family == AF_INET6)
rc = ipv6_connect(server);
else
rc = ipv4_connect(server);
/* we should try only the port we connected to before */
rc = generic_ip_connect(server);
if (rc) {
cFYI(1, "reconnect error %d", rc);
msleep(3000);
@ -477,7 +476,7 @@ incomplete_rcv:
* initialize frame)
*/
cifs_set_port((struct sockaddr *)
&server->addr.sockAddr, CIFS_PORT);
&server->dstaddr, CIFS_PORT);
cifs_reconnect(server);
csocket = server->ssocket;
wake_up(&server->response_q);
@ -817,11 +816,11 @@ cifs_parse_mount_options(char *options, const char *devname,
* informational, only used for servers that do not support
* port 445 and it can be overridden at mount time
*/
memset(vol->source_rfc1001_name, 0x20, 15);
for (i = 0; i < strnlen(nodename, 15); i++)
memset(vol->source_rfc1001_name, 0x20, RFC1001_NAME_LEN);
for (i = 0; i < strnlen(nodename, RFC1001_NAME_LEN); i++)
vol->source_rfc1001_name[i] = toupper(nodename[i]);
vol->source_rfc1001_name[15] = 0;
vol->source_rfc1001_name[RFC1001_NAME_LEN] = 0;
/* null target name indicates to use *SMBSERVR default called name
if we end up sending RFC1001 session initialize */
vol->target_rfc1001_name[0] = 0;
@ -985,13 +984,11 @@ cifs_parse_mount_options(char *options, const char *devname,
return 1;
} else if (strnicmp(value, "krb5", 4) == 0) {
vol->secFlg |= CIFSSEC_MAY_KRB5;
#ifdef CONFIG_CIFS_EXPERIMENTAL
} else if (strnicmp(value, "ntlmsspi", 8) == 0) {
vol->secFlg |= CIFSSEC_MAY_NTLMSSP |
CIFSSEC_MUST_SIGN;
} else if (strnicmp(value, "ntlmssp", 7) == 0) {
vol->secFlg |= CIFSSEC_MAY_NTLMSSP;
#endif
} else if (strnicmp(value, "ntlmv2i", 7) == 0) {
vol->secFlg |= CIFSSEC_MAY_NTLMV2 |
CIFSSEC_MUST_SIGN;
@ -1168,22 +1165,22 @@ cifs_parse_mount_options(char *options, const char *devname,
if (!value || !*value || (*value == ' ')) {
cFYI(1, "invalid (empty) netbiosname");
} else {
memset(vol->source_rfc1001_name, 0x20, 15);
for (i = 0; i < 15; i++) {
/* BB are there cases in which a comma can be
valid in this workstation netbios name (and need
special handling)? */
/* We do not uppercase netbiosname for user */
memset(vol->source_rfc1001_name, 0x20,
RFC1001_NAME_LEN);
/*
* FIXME: are there cases in which a comma can
* be valid in workstation netbios name (and
* need special handling)?
*/
for (i = 0; i < RFC1001_NAME_LEN; i++) {
/* don't ucase netbiosname for user */
if (value[i] == 0)
break;
else
vol->source_rfc1001_name[i] =
value[i];
vol->source_rfc1001_name[i] = value[i];
}
/* The string has 16th byte zero still from
set at top of the function */
if ((i == 15) && (value[i] != 0))
if (i == RFC1001_NAME_LEN && value[i] != 0)
printk(KERN_WARNING "CIFS: netbiosname"
" longer than 15 truncated.\n");
}
@ -1193,7 +1190,8 @@ cifs_parse_mount_options(char *options, const char *devname,
cFYI(1, "empty server netbiosname specified");
} else {
/* last byte, type, is 0x20 for servr type */
memset(vol->target_rfc1001_name, 0x20, 16);
memset(vol->target_rfc1001_name, 0x20,
RFC1001_NAME_LEN_WITH_NULL);
for (i = 0; i < 15; i++) {
/* BB are there cases in which a comma can be
@ -1210,7 +1208,7 @@ cifs_parse_mount_options(char *options, const char *devname,
}
/* The string has 16th byte zero still from
set at top of the function */
if ((i == 15) && (value[i] != 0))
if (i == RFC1001_NAME_LEN && value[i] != 0)
printk(KERN_WARNING "CIFS: server net"
"biosname longer than 15 truncated.\n");
}
@ -1341,10 +1339,8 @@ cifs_parse_mount_options(char *options, const char *devname,
vol->no_psx_acl = 0;
} else if (strnicmp(data, "noacl", 5) == 0) {
vol->no_psx_acl = 1;
#ifdef CONFIG_CIFS_EXPERIMENTAL
} else if (strnicmp(data, "locallease", 6) == 0) {
vol->local_lease = 1;
#endif
} else if (strnicmp(data, "sign", 4) == 0) {
vol->secFlg |= CIFSSEC_MUST_SIGN;
} else if (strnicmp(data, "seal", 4) == 0) {
@ -1454,35 +1450,71 @@ 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,
struct sockaddr *srcaddr)
{
struct sockaddr_in *addr4 = (struct sockaddr_in *)addr;
struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)addr;
switch (addr->sa_family) {
case AF_INET:
if (addr4->sin_addr.s_addr !=
server->addr.sockAddr.sin_addr.s_addr)
return false;
if (addr4->sin_port &&
addr4->sin_port != server->addr.sockAddr.sin_port)
case AF_INET: {
struct sockaddr_in *addr4 = (struct sockaddr_in *)addr;
struct sockaddr_in *srv_addr4 =
(struct sockaddr_in *)&server->dstaddr;
if (addr4->sin_addr.s_addr != srv_addr4->sin_addr.s_addr)
return false;
break;
case AF_INET6:
}
case AF_INET6: {
struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)addr;
struct sockaddr_in6 *srv_addr6 =
(struct sockaddr_in6 *)&server->dstaddr;
if (!ipv6_addr_equal(&addr6->sin6_addr,
&server->addr.sockAddr6.sin6_addr))
&srv_addr6->sin6_addr))
return false;
if (addr6->sin6_scope_id !=
server->addr.sockAddr6.sin6_scope_id)
return false;
if (addr6->sin6_port &&
addr6->sin6_port != server->addr.sockAddr6.sin6_port)
if (addr6->sin6_scope_id != srv_addr6->sin6_scope_id)
return false;
break;
}
default:
WARN_ON(1);
return false; /* don't expect to be here */
}
if (!srcip_matches(srcaddr, (struct sockaddr *)&server->srcaddr))
return false;
@ -1549,6 +1581,9 @@ 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;
@ -1681,14 +1716,13 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
cFYI(1, "attempting ipv6 connect");
/* BB should we allow ipv6 on port 139? */
/* other OS never observed in Wild doing 139 with v6 */
memcpy(&tcp_ses->addr.sockAddr6, sin_server6,
sizeof(struct sockaddr_in6));
rc = ipv6_connect(tcp_ses);
} else {
memcpy(&tcp_ses->addr.sockAddr, sin_server,
sizeof(struct sockaddr_in));
rc = ipv4_connect(tcp_ses);
}
memcpy(&tcp_ses->dstaddr, sin_server6,
sizeof(struct sockaddr_in6));
} else
memcpy(&tcp_ses->dstaddr, sin_server,
sizeof(struct sockaddr_in));
rc = ip_connect(tcp_ses);
if (rc < 0) {
cERROR(1, "Error connecting to socket. Aborting operation");
goto out_err_crypto_release;
@ -1793,6 +1827,8 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
{
int rc = -ENOMEM, xid;
struct cifsSesInfo *ses;
struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr;
struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr;
xid = GetXid();
@ -1836,12 +1872,10 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
/* new SMB session uses our server ref */
ses->server = server;
if (server->addr.sockAddr6.sin6_family == AF_INET6)
sprintf(ses->serverName, "%pI6",
&server->addr.sockAddr6.sin6_addr);
if (server->dstaddr.ss_family == AF_INET6)
sprintf(ses->serverName, "%pI6", &addr6->sin6_addr);
else
sprintf(ses->serverName, "%pI4",
&server->addr.sockAddr.sin_addr.s_addr);
sprintf(ses->serverName, "%pI4", &addr->sin_addr);
if (volume_info->username)
strncpy(ses->userName, volume_info->username,
@ -2136,19 +2170,106 @@ bind_socket(struct TCP_Server_Info *server)
}
static int
ipv4_connect(struct TCP_Server_Info *server)
ip_rfc1001_connect(struct TCP_Server_Info *server)
{
int rc = 0;
int val;
bool connected = false;
__be16 orig_port = 0;
/*
* some servers require RFC1001 sessinit before sending
* negprot - BB check reconnection in case where second
* sessinit is sent but no second negprot
*/
struct rfc1002_session_packet *ses_init_buf;
struct smb_hdr *smb_buf;
ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet),
GFP_KERNEL);
if (ses_init_buf) {
ses_init_buf->trailer.session_req.called_len = 32;
if (server->server_RFC1001_name &&
server->server_RFC1001_name[0] != 0)
rfc1002mangle(ses_init_buf->trailer.
session_req.called_name,
server->server_RFC1001_name,
RFC1001_NAME_LEN_WITH_NULL);
else
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 (server->workstation_RFC1001_name &&
server->workstation_RFC1001_name[0] != 0)
rfc1002mangle(ses_init_buf->trailer.
session_req.calling_name,
server->workstation_RFC1001_name,
RFC1001_NAME_LEN_WITH_NULL);
else
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;
smb_buf = (struct smb_hdr *)ses_init_buf;
/* sizeof RFC1002_SESSION_REQUEST with no scope */
smb_buf->smb_buf_length = 0x81000044;
rc = smb_send(server, smb_buf, 0x44);
kfree(ses_init_buf);
/*
* RFC1001 layer in at least one server
* requires very short break before negprot
* presumably because not expecting negprot
* to follow so fast. This is a simple
* solution that works without
* complicating the code and causes no
* significant slowing down on mount
* for everyone else
*/
usleep_range(1000, 2000);
}
/*
* else the negprot may still work without this
* even though malloc failed
*/
return rc;
}
static int
generic_ip_connect(struct TCP_Server_Info *server)
{
int rc = 0;
unsigned short int sport;
int slen, sfamily;
struct socket *socket = server->ssocket;
struct sockaddr *saddr;
saddr = (struct sockaddr *) &server->dstaddr;
if (server->dstaddr.ss_family == AF_INET6) {
sport = ((struct sockaddr_in6 *) saddr)->sin6_port;
slen = sizeof(struct sockaddr_in6);
sfamily = AF_INET6;
} else {
sport = ((struct sockaddr_in *) saddr)->sin_port;
slen = sizeof(struct sockaddr_in);
sfamily = AF_INET;
}
if (socket == NULL) {
rc = sock_create_kern(PF_INET, SOCK_STREAM,
rc = sock_create_kern(sfamily, SOCK_STREAM,
IPPROTO_TCP, &socket);
if (rc < 0) {
cERROR(1, "Error %d creating socket", rc);
server->ssocket = NULL;
return rc;
}
@ -2156,218 +2277,19 @@ ipv4_connect(struct TCP_Server_Info *server)
cFYI(1, "Socket created");
server->ssocket = socket;
socket->sk->sk_allocation = GFP_NOFS;
cifs_reclassify_socket4(socket);
if (sfamily == AF_INET6)
cifs_reclassify_socket6(socket);
else
cifs_reclassify_socket4(socket);
}
rc = bind_socket(server);
if (rc < 0)
return rc;
/* user overrode default port */
if (server->addr.sockAddr.sin_port) {
rc = socket->ops->connect(socket, (struct sockaddr *)
&server->addr.sockAddr,
sizeof(struct sockaddr_in), 0);
if (rc >= 0)
connected = true;
}
if (!connected) {
/* save original port so we can retry user specified port
later if fall back ports fail this time */
orig_port = server->addr.sockAddr.sin_port;
/* do not retry on the same port we just failed on */
if (server->addr.sockAddr.sin_port != htons(CIFS_PORT)) {
server->addr.sockAddr.sin_port = htons(CIFS_PORT);
rc = socket->ops->connect(socket,
(struct sockaddr *)
&server->addr.sockAddr,
sizeof(struct sockaddr_in), 0);
if (rc >= 0)
connected = true;
}
}
if (!connected) {
server->addr.sockAddr.sin_port = htons(RFC1001_PORT);
rc = socket->ops->connect(socket, (struct sockaddr *)
&server->addr.sockAddr,
sizeof(struct sockaddr_in), 0);
if (rc >= 0)
connected = true;
}
/* give up here - unless we want to retry on different
protocol families some day */
if (!connected) {
if (orig_port)
server->addr.sockAddr.sin_port = orig_port;
cFYI(1, "Error %d connecting to server via ipv4", rc);
sock_release(socket);
server->ssocket = NULL;
return rc;
}
/*
* Eventually check for other socket options to change from
* the default. sock_setsockopt not used because it expects
* user space buffer
*/
socket->sk->sk_rcvtimeo = 7 * HZ;
socket->sk->sk_sndtimeo = 5 * HZ;
/* make the bufsizes depend on wsize/rsize and max requests */
if (server->noautotune) {
if (socket->sk->sk_sndbuf < (200 * 1024))
socket->sk->sk_sndbuf = 200 * 1024;
if (socket->sk->sk_rcvbuf < (140 * 1024))
socket->sk->sk_rcvbuf = 140 * 1024;
}
if (server->tcp_nodelay) {
val = 1;
rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY,
(char *)&val, sizeof(val));
if (rc)
cFYI(1, "set TCP_NODELAY socket option error %d", rc);
}
cFYI(1, "sndbuf %d rcvbuf %d rcvtimeo 0x%lx",
socket->sk->sk_sndbuf,
socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo);
/* send RFC1001 sessinit */
if (server->addr.sockAddr.sin_port == htons(RFC1001_PORT)) {
/* some servers require RFC1001 sessinit before sending
negprot - BB check reconnection in case where second
sessinit is sent but no second negprot */
struct rfc1002_session_packet *ses_init_buf;
struct smb_hdr *smb_buf;
ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet),
GFP_KERNEL);
if (ses_init_buf) {
ses_init_buf->trailer.session_req.called_len = 32;
if (server->server_RFC1001_name &&
server->server_RFC1001_name[0] != 0)
rfc1002mangle(ses_init_buf->trailer.
session_req.called_name,
server->server_RFC1001_name,
RFC1001_NAME_LEN_WITH_NULL);
else
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 (server->workstation_RFC1001_name &&
server->workstation_RFC1001_name[0] != 0)
rfc1002mangle(ses_init_buf->trailer.
session_req.calling_name,
server->workstation_RFC1001_name,
RFC1001_NAME_LEN_WITH_NULL);
else
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;
smb_buf = (struct smb_hdr *)ses_init_buf;
/* sizeof RFC1002_SESSION_REQUEST with no scope */
smb_buf->smb_buf_length = 0x81000044;
rc = smb_send(server, smb_buf, 0x44);
kfree(ses_init_buf);
msleep(1); /* RFC1001 layer in at least one server
requires very short break before negprot
presumably because not expecting negprot
to follow so fast. This is a simple
solution that works without
complicating the code and causes no
significant slowing down on mount
for everyone else */
}
/* else the negprot may still work without this
even though malloc failed */
}
return rc;
}
static int
ipv6_connect(struct TCP_Server_Info *server)
{
int rc = 0;
int val;
bool connected = false;
__be16 orig_port = 0;
struct socket *socket = server->ssocket;
if (socket == NULL) {
rc = sock_create_kern(PF_INET6, SOCK_STREAM,
IPPROTO_TCP, &socket);
if (rc < 0) {
cERROR(1, "Error %d creating ipv6 socket", rc);
socket = NULL;
return rc;
}
/* BB other socket options to set KEEPALIVE, NODELAY? */
cFYI(1, "ipv6 Socket created");
server->ssocket = socket;
socket->sk->sk_allocation = GFP_NOFS;
cifs_reclassify_socket6(socket);
}
rc = bind_socket(server);
if (rc < 0)
return rc;
/* user overrode default port */
if (server->addr.sockAddr6.sin6_port) {
rc = socket->ops->connect(socket,
(struct sockaddr *) &server->addr.sockAddr6,
sizeof(struct sockaddr_in6), 0);
if (rc >= 0)
connected = true;
}
if (!connected) {
/* save original port so we can retry user specified port
later if fall back ports fail this time */
orig_port = server->addr.sockAddr6.sin6_port;
/* do not retry on the same port we just failed on */
if (server->addr.sockAddr6.sin6_port != htons(CIFS_PORT)) {
server->addr.sockAddr6.sin6_port = htons(CIFS_PORT);
rc = socket->ops->connect(socket, (struct sockaddr *)
&server->addr.sockAddr6,
sizeof(struct sockaddr_in6), 0);
if (rc >= 0)
connected = true;
}
}
if (!connected) {
server->addr.sockAddr6.sin6_port = htons(RFC1001_PORT);
rc = socket->ops->connect(socket, (struct sockaddr *)
&server->addr.sockAddr6,
sizeof(struct sockaddr_in6), 0);
if (rc >= 0)
connected = true;
}
/* give up here - unless we want to retry on different
protocol families some day */
if (!connected) {
if (orig_port)
server->addr.sockAddr6.sin6_port = orig_port;
cFYI(1, "Error %d connecting to server via ipv6", rc);
rc = socket->ops->connect(socket, saddr, slen, 0);
if (rc < 0) {
cFYI(1, "Error %d connecting to server", rc);
sock_release(socket);
server->ssocket = NULL;
return rc;
@ -2381,19 +2303,61 @@ ipv6_connect(struct TCP_Server_Info *server)
socket->sk->sk_rcvtimeo = 7 * HZ;
socket->sk->sk_sndtimeo = 5 * HZ;
/* make the bufsizes depend on wsize/rsize and max requests */
if (server->noautotune) {
if (socket->sk->sk_sndbuf < (200 * 1024))
socket->sk->sk_sndbuf = 200 * 1024;
if (socket->sk->sk_rcvbuf < (140 * 1024))
socket->sk->sk_rcvbuf = 140 * 1024;
}
if (server->tcp_nodelay) {
val = 1;
int val = 1;
rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY,
(char *)&val, sizeof(val));
if (rc)
cFYI(1, "set TCP_NODELAY socket option error %d", rc);
}
server->ssocket = socket;
cFYI(1, "sndbuf %d rcvbuf %d rcvtimeo 0x%lx",
socket->sk->sk_sndbuf,
socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo);
if (sport == htons(RFC1001_PORT))
rc = ip_rfc1001_connect(server);
return rc;
}
static int
ip_connect(struct TCP_Server_Info *server)
{
unsigned short int *sport;
struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr;
struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr;
if (server->dstaddr.ss_family == AF_INET6)
sport = &addr6->sin6_port;
else
sport = &addr->sin_port;
if (*sport == 0) {
int rc;
/* try with 445 port at first */
*sport = htons(CIFS_PORT);
rc = generic_ip_connect(server);
if (rc >= 0)
return rc;
/* if it failed, try with 139 port */
*sport = htons(RFC1001_PORT);
}
return generic_ip_connect(server);
}
void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon,
struct super_block *sb, struct smb_vol *vol_info)
{

6
fs/cifs/dir.c
View File

@ -293,10 +293,8 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
args.uid = NO_CHANGE_64;
args.gid = NO_CHANGE_64;
}
CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
CIFSSMBUnixSetFileInfo(xid, tcon, &args, fileHandle,
current->tgid);
} else {
/* BB implement mode setting via Windows security
descriptors e.g. */

233
fs/cifs/file.c
View File

@ -104,53 +104,6 @@ static inline int cifs_get_disposition(unsigned int flags)
return FILE_OPEN;
}
static inline int cifs_open_inode_helper(struct inode *inode,
struct cifsTconInfo *pTcon, __u32 oplock, FILE_ALL_INFO *buf,
char *full_path, int xid)
{
struct cifsInodeInfo *pCifsInode = CIFS_I(inode);
struct timespec temp;
int rc;
if (pCifsInode->clientCanCacheRead) {
/* we have the inode open somewhere else
no need to discard cache data */
goto client_can_cache;
}
/* BB need same check in cifs_create too? */
/* if not oplocked, invalidate inode pages if mtime or file
size changed */
temp = cifs_NTtimeToUnix(buf->LastWriteTime);
if (timespec_equal(&inode->i_mtime, &temp) &&
(inode->i_size ==
(loff_t)le64_to_cpu(buf->EndOfFile))) {
cFYI(1, "inode unchanged on server");
} else {
if (inode->i_mapping) {
/* BB no need to lock inode until after invalidate
since namei code should already have it locked? */
rc = filemap_write_and_wait(inode->i_mapping);
mapping_set_error(inode->i_mapping, rc);
}
cFYI(1, "invalidating remote inode since open detected it "
"changed");
invalidate_remote_inode(inode);
}
client_can_cache:
if (pTcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, inode->i_sb,
xid);
else
rc = cifs_get_inode_info(&inode, full_path, buf, inode->i_sb,
xid, NULL);
cifs_set_oplock_level(pCifsInode, oplock);
return rc;
}
int cifs_posix_open(char *full_path, struct inode **pinode,
struct super_block *sb, int mode, unsigned int f_flags,
__u32 *poplock, __u16 *pnetfid, int xid)
@ -213,6 +166,76 @@ posix_open_ret:
return rc;
}
static int
cifs_nt_open(char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
struct cifsTconInfo *tcon, unsigned int f_flags, __u32 *poplock,
__u16 *pnetfid, int xid)
{
int rc;
int desiredAccess;
int disposition;
FILE_ALL_INFO *buf;
desiredAccess = cifs_convert_flags(f_flags);
/*********************************************************************
* open flag mapping table:
*
* POSIX Flag CIFS Disposition
* ---------- ----------------
* O_CREAT FILE_OPEN_IF
* O_CREAT | O_EXCL FILE_CREATE
* O_CREAT | O_TRUNC FILE_OVERWRITE_IF
* O_TRUNC FILE_OVERWRITE
* none of the above FILE_OPEN
*
* Note that there is not a direct match between disposition
* FILE_SUPERSEDE (ie create whether or not file exists although
* O_CREAT | O_TRUNC is similar but truncates the existing
* file rather than creating a new file as FILE_SUPERSEDE does
* (which uses the attributes / metadata passed in on open call)
*?
*? O_SYNC is a reasonable match to CIFS writethrough flag
*? and the read write flags match reasonably. O_LARGEFILE
*? is irrelevant because largefile support is always used
*? by this client. Flags O_APPEND, O_DIRECT, O_DIRECTORY,
* O_FASYNC, O_NOFOLLOW, O_NONBLOCK need further investigation
*********************************************************************/
disposition = cifs_get_disposition(f_flags);
/* BB pass O_SYNC flag through on file attributes .. BB */
buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
if (!buf)
return -ENOMEM;
if (tcon->ses->capabilities & CAP_NT_SMBS)
rc = CIFSSMBOpen(xid, tcon, full_path, disposition,
desiredAccess, CREATE_NOT_DIR, pnetfid, poplock, buf,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR);
else
rc = SMBLegacyOpen(xid, tcon, full_path, disposition,
desiredAccess, CREATE_NOT_DIR, pnetfid, poplock, buf,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc)
goto out;
if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, inode->i_sb,
xid);
else
rc = cifs_get_inode_info(&inode, full_path, buf, inode->i_sb,
xid, pnetfid);
out:
kfree(buf);
return rc;
}
struct cifsFileInfo *
cifs_new_fileinfo(__u16 fileHandle, struct file *file,
struct tcon_link *tlink, __u32 oplock)
@ -317,10 +340,8 @@ int cifs_open(struct inode *inode, struct file *file)
struct cifsFileInfo *pCifsFile = NULL;
struct cifsInodeInfo *pCifsInode;
char *full_path = NULL;
int desiredAccess;
int disposition;
bool posix_open_ok = false;
__u16 netfid;
FILE_ALL_INFO *buf = NULL;
xid = GetXid();
@ -358,17 +379,7 @@ int cifs_open(struct inode *inode, struct file *file)
file->f_flags, &oplock, &netfid, xid);
if (rc == 0) {
cFYI(1, "posix open succeeded");
pCifsFile = cifs_new_fileinfo(netfid, file, tlink,
oplock);
if (pCifsFile == NULL) {
CIFSSMBClose(xid, tcon, netfid);
rc = -ENOMEM;
}
cifs_fscache_set_inode_cookie(inode, file);
goto out;
posix_open_ok = true;
} else if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
if (tcon->ses->serverNOS)
cERROR(1, "server %s of type %s returned"
@ -385,103 +396,39 @@ int cifs_open(struct inode *inode, struct file *file)
or DFS errors */
}
desiredAccess = cifs_convert_flags(file->f_flags);
/*********************************************************************
* open flag mapping table:
*
* POSIX Flag CIFS Disposition
* ---------- ----------------
* O_CREAT FILE_OPEN_IF
* O_CREAT | O_EXCL FILE_CREATE
* O_CREAT | O_TRUNC FILE_OVERWRITE_IF
* O_TRUNC FILE_OVERWRITE
* none of the above FILE_OPEN
*
* Note that there is not a direct match between disposition
* FILE_SUPERSEDE (ie create whether or not file exists although
* O_CREAT | O_TRUNC is similar but truncates the existing
* file rather than creating a new file as FILE_SUPERSEDE does
* (which uses the attributes / metadata passed in on open call)
*?
*? O_SYNC is a reasonable match to CIFS writethrough flag
*? and the read write flags match reasonably. O_LARGEFILE
*? is irrelevant because largefile support is always used
*? by this client. Flags O_APPEND, O_DIRECT, O_DIRECTORY,
* O_FASYNC, O_NOFOLLOW, O_NONBLOCK need further investigation
*********************************************************************/
disposition = cifs_get_disposition(file->f_flags);
/* BB pass O_SYNC flag through on file attributes .. BB */
/* Also refresh inode by passing in file_info buf returned by SMBOpen
and calling get_inode_info with returned buf (at least helps
non-Unix server case) */
/* BB we can not do this if this is the second open of a file
and the first handle has writebehind data, we might be
able to simply do a filemap_fdatawrite/filemap_fdatawait first */
buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
if (!buf) {
rc = -ENOMEM;
goto out;
if (!posix_open_ok) {
rc = cifs_nt_open(full_path, inode, cifs_sb, tcon,
file->f_flags, &oplock, &netfid, xid);
if (rc)
goto out;
}
if (tcon->ses->capabilities & CAP_NT_SMBS)
rc = CIFSSMBOpen(xid, tcon, full_path, disposition,
desiredAccess, CREATE_NOT_DIR, &netfid, &oplock, buf,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR);
else
rc = -EIO; /* no NT SMB support fall into legacy open below */
if (rc == -EIO) {
/* Old server, try legacy style OpenX */
rc = SMBLegacyOpen(xid, tcon, full_path, disposition,
desiredAccess, CREATE_NOT_DIR, &netfid, &oplock, buf,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR);
}
if (rc) {
cFYI(1, "cifs_open returned 0x%x", rc);
goto out;
}
rc = cifs_open_inode_helper(inode, tcon, oplock, buf, full_path, xid);
if (rc != 0)
goto out;
pCifsFile = cifs_new_fileinfo(netfid, file, tlink, oplock);
if (pCifsFile == NULL) {
CIFSSMBClose(xid, tcon, netfid);
rc = -ENOMEM;
goto out;
}
cifs_fscache_set_inode_cookie(inode, file);
if (oplock & CIFS_CREATE_ACTION) {
if ((oplock & CIFS_CREATE_ACTION) && !posix_open_ok && tcon->unix_ext) {
/* time to set mode which we can not set earlier due to
problems creating new read-only files */
if (tcon->unix_ext) {
struct cifs_unix_set_info_args args = {
.mode = inode->i_mode,
.uid = NO_CHANGE_64,
.gid = NO_CHANGE_64,
.ctime = NO_CHANGE_64,
.atime = NO_CHANGE_64,
.mtime = NO_CHANGE_64,
.device = 0,
};
CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
}
struct cifs_unix_set_info_args args = {
.mode = inode->i_mode,
.uid = NO_CHANGE_64,
.gid = NO_CHANGE_64,
.ctime = NO_CHANGE_64,
.atime = NO_CHANGE_64,
.mtime = NO_CHANGE_64,
.device = 0,
};
CIFSSMBUnixSetFileInfo(xid, tcon, &args, netfid,
pCifsFile->pid);
}
out:
kfree(buf);
kfree(full_path);
FreeXid(xid);
cifs_put_tlink(tlink);

6
fs/cifs/inode.c
View File

@ -518,6 +518,7 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
fattr->cf_eof = le64_to_cpu(info->EndOfFile);
fattr->cf_bytes = le64_to_cpu(info->AllocationSize);
fattr->cf_createtime = le64_to_cpu(info->CreationTime);
if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
@ -779,6 +780,10 @@ cifs_find_inode(struct inode *inode, void *opaque)
if (CIFS_I(inode)->uniqueid != fattr->cf_uniqueid)
return 0;
/* use createtime like an i_generation field */
if (CIFS_I(inode)->createtime != fattr->cf_createtime)
return 0;
/* don't match inode of different type */
if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT))
return 0;
@ -796,6 +801,7 @@ cifs_init_inode(struct inode *inode, void *opaque)
struct cifs_fattr *fattr = (struct cifs_fattr *) opaque;
CIFS_I(inode)->uniqueid = fattr->cf_uniqueid;
CIFS_I(inode)->createtime = fattr->cf_createtime;
return 0;
}

1
fs/cifs/readdir.c
View File

@ -160,6 +160,7 @@ cifs_dir_info_to_fattr(struct cifs_fattr *fattr, FILE_DIRECTORY_INFO *info,
fattr->cf_cifsattrs = le32_to_cpu(info->ExtFileAttributes);
fattr->cf_eof = le64_to_cpu(info->EndOfFile);
fattr->cf_bytes = le64_to_cpu(info->AllocationSize);
fattr->cf_createtime = le64_to_cpu(info->CreationTime);
fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime);
fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);

143
fs/cifs/sess.c
View File

@ -420,7 +420,6 @@ static int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len,
return 0;
}
#ifdef CONFIG_CIFS_EXPERIMENTAL
/* BB Move to ntlmssp.c eventually */
/* We do not malloc the blob, it is passed in pbuffer, because
@ -431,13 +430,14 @@ static void build_ntlmssp_negotiate_blob(unsigned char *pbuffer,
NEGOTIATE_MESSAGE *sec_blob = (NEGOTIATE_MESSAGE *)pbuffer;
__u32 flags;
memset(pbuffer, 0, sizeof(NEGOTIATE_MESSAGE));
memcpy(sec_blob->Signature, NTLMSSP_SIGNATURE, 8);
sec_blob->MessageType = NtLmNegotiate;
/* BB is NTLMV2 session security format easier to use here? */
flags = NTLMSSP_NEGOTIATE_56 | NTLMSSP_REQUEST_TARGET |
NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE |
NTLMSSP_NEGOTIATE_NTLM;
NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC;
if (ses->server->secMode &
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) {
flags |= NTLMSSP_NEGOTIATE_SIGN;
@ -446,7 +446,7 @@ static void build_ntlmssp_negotiate_blob(unsigned char *pbuffer,
NTLMSSP_NEGOTIATE_EXTENDED_SEC;
}
sec_blob->NegotiateFlags |= cpu_to_le32(flags);
sec_blob->NegotiateFlags = cpu_to_le32(flags);
sec_blob->WorkstationName.BufferOffset = 0;
sec_blob->WorkstationName.Length = 0;
@ -477,7 +477,7 @@ static int build_ntlmssp_auth_blob(unsigned char *pbuffer,
flags = NTLMSSP_NEGOTIATE_56 |
NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_TARGET_INFO |
NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE |
NTLMSSP_NEGOTIATE_NTLM;
NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC;
if (ses->server->secMode &
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
flags |= NTLMSSP_NEGOTIATE_SIGN;
@ -485,7 +485,7 @@ static int build_ntlmssp_auth_blob(unsigned char *pbuffer,
flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
tmp = pbuffer + sizeof(AUTHENTICATE_MESSAGE);
sec_blob->NegotiateFlags |= cpu_to_le32(flags);
sec_blob->NegotiateFlags = cpu_to_le32(flags);
sec_blob->LmChallengeResponse.BufferOffset =
cpu_to_le32(sizeof(AUTHENTICATE_MESSAGE));
@ -544,8 +544,9 @@ static int build_ntlmssp_auth_blob(unsigned char *pbuffer,
sec_blob->WorkstationName.MaximumLength = 0;
tmp += 2;
if ((ses->ntlmssp->server_flags & NTLMSSP_NEGOTIATE_KEY_XCH) &&
!calc_seckey(ses)) {
if (((ses->ntlmssp->server_flags & NTLMSSP_NEGOTIATE_KEY_XCH) ||
(ses->ntlmssp->server_flags & NTLMSSP_NEGOTIATE_EXTENDED_SEC))
&& !calc_seckey(ses)) {
memcpy(tmp, ses->ntlmssp->ciphertext, CIFS_CPHTXT_SIZE);
sec_blob->SessionKey.BufferOffset = cpu_to_le32(tmp - pbuffer);
sec_blob->SessionKey.Length = cpu_to_le16(CIFS_CPHTXT_SIZE);
@ -563,17 +564,6 @@ setup_ntlmv2_ret:
return rc;
}
static void setup_ntlmssp_neg_req(SESSION_SETUP_ANDX *pSMB,
struct cifsSesInfo *ses)
{
build_ntlmssp_negotiate_blob(&pSMB->req.SecurityBlob[0], ses);
pSMB->req.SecurityBlobLength = cpu_to_le16(sizeof(NEGOTIATE_MESSAGE));
return;
}
#endif
int
CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses,
const struct nls_table *nls_cp)
@ -814,71 +804,70 @@ ssetup_ntlmssp_authenticate:
rc = -ENOSYS;
goto ssetup_exit;
#endif /* CONFIG_CIFS_UPCALL */
} else {
#ifdef CONFIG_CIFS_EXPERIMENTAL
if (type == RawNTLMSSP) {
if ((pSMB->req.hdr.Flags2 & SMBFLG2_UNICODE) == 0) {
cERROR(1, "NTLMSSP requires Unicode support");
rc = -ENOSYS;
goto ssetup_exit;
}
cFYI(1, "ntlmssp session setup phase %d", phase);
pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
capabilities |= CAP_EXTENDED_SECURITY;
pSMB->req.Capabilities |= cpu_to_le32(capabilities);
if (phase == NtLmNegotiate) {
setup_ntlmssp_neg_req(pSMB, ses);
iov[1].iov_len = sizeof(NEGOTIATE_MESSAGE);
iov[1].iov_base = &pSMB->req.SecurityBlob[0];
} else if (phase == NtLmAuthenticate) {
/* 5 is an empirical value, large enought to
* hold authenticate message, max 10 of
* av paris, doamin,user,workstation mames,
* flags etc..
*/
ntlmsspblob = kmalloc(
5*sizeof(struct _AUTHENTICATE_MESSAGE),
GFP_KERNEL);
if (!ntlmsspblob) {
cERROR(1, "Can't allocate NTLMSSP");
rc = -ENOMEM;
goto ssetup_exit;
}
rc = build_ntlmssp_auth_blob(ntlmsspblob,
&blob_len, ses, nls_cp);
if (rc)
goto ssetup_exit;
iov[1].iov_len = blob_len;
iov[1].iov_base = ntlmsspblob;
pSMB->req.SecurityBlobLength =
cpu_to_le16(blob_len);
/* Make sure that we tell the server that we
are using the uid that it just gave us back
on the response (challenge) */
smb_buf->Uid = ses->Suid;
} else {
cERROR(1, "invalid phase %d", phase);
rc = -ENOSYS;
goto ssetup_exit;
}
/* unicode strings must be word aligned */
if ((iov[0].iov_len + iov[1].iov_len) % 2) {
*bcc_ptr = 0;
bcc_ptr++;
}
unicode_oslm_strings(&bcc_ptr, nls_cp);
} else {
cERROR(1, "secType %d not supported!", type);
} else if (type == RawNTLMSSP) {
if ((pSMB->req.hdr.Flags2 & SMBFLG2_UNICODE) == 0) {
cERROR(1, "NTLMSSP requires Unicode support");
rc = -ENOSYS;
goto ssetup_exit;
}
#else
cFYI(1, "ntlmssp session setup phase %d", phase);
pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
capabilities |= CAP_EXTENDED_SECURITY;
pSMB->req.Capabilities |= cpu_to_le32(capabilities);
switch(phase) {
case NtLmNegotiate:
build_ntlmssp_negotiate_blob(
pSMB->req.SecurityBlob, ses);
iov[1].iov_len = sizeof(NEGOTIATE_MESSAGE);
iov[1].iov_base = pSMB->req.SecurityBlob;
pSMB->req.SecurityBlobLength =
cpu_to_le16(sizeof(NEGOTIATE_MESSAGE));
break;
case NtLmAuthenticate:
/*
* 5 is an empirical value, large enough to hold
* authenticate message plus max 10 of av paris,
* domain, user, workstation names, flags, etc.
*/
ntlmsspblob = kzalloc(
5*sizeof(struct _AUTHENTICATE_MESSAGE),
GFP_KERNEL);
if (!ntlmsspblob) {
cERROR(1, "Can't allocate NTLMSSP blob");
rc = -ENOMEM;
goto ssetup_exit;
}
rc = build_ntlmssp_auth_blob(ntlmsspblob,
&blob_len, ses, nls_cp);
if (rc)
goto ssetup_exit;
iov[1].iov_len = blob_len;
iov[1].iov_base = ntlmsspblob;
pSMB->req.SecurityBlobLength = cpu_to_le16(blob_len);
/*
* Make sure that we tell the server that we are using
* the uid that it just gave us back on the response
* (challenge)
*/
smb_buf->Uid = ses->Suid;
break;
default:
cERROR(1, "invalid phase %d", phase);
rc = -ENOSYS;
goto ssetup_exit;
}
/* unicode strings must be word aligned */
if ((iov[0].iov_len + iov[1].iov_len) % 2) {
*bcc_ptr = 0;
bcc_ptr++;
}
unicode_oslm_strings(&bcc_ptr, nls_cp);
} else {
cERROR(1, "secType %d not supported!", type);
rc = -ENOSYS;
goto ssetup_exit;
#endif
}
iov[2].iov_base = str_area;

2
fs/cifs/transport.c
View File

@ -119,7 +119,7 @@ smb_sendv(struct TCP_Server_Info *server, struct kvec *iov, int n_vec)
if (ssocket == NULL)
return -ENOTSOCK; /* BB eventually add reconnect code here */
smb_msg.msg_name = (struct sockaddr *) &server->addr.sockAddr;
smb_msg.msg_name = (struct sockaddr *) &server->dstaddr;
smb_msg.msg_namelen = sizeof(struct sockaddr);
smb_msg.msg_control = NULL;
smb_msg.msg_controllen = 0;