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-rw-r--r--fs/cifs/connect.c960
1 files changed, 331 insertions, 629 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 94b7788c318..12b3da39733 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -56,9 +56,6 @@
#define CIFS_PORT 445
#define RFC1001_PORT 139
-/* SMB echo "timeout" -- FIXME: tunable? */
-#define SMB_ECHO_INTERVAL (60 * HZ)
-
extern mempool_t *cifs_req_poolp;
/* FIXME: should these be tunable? */
@@ -70,6 +67,7 @@ enum {
/* Mount options that take no arguments */
Opt_user_xattr, Opt_nouser_xattr,
Opt_forceuid, Opt_noforceuid,
+ Opt_forcegid, Opt_noforcegid,
Opt_noblocksend, Opt_noautotune,
Opt_hard, Opt_soft, Opt_perm, Opt_noperm,
Opt_mapchars, Opt_nomapchars, Opt_sfu,
@@ -85,8 +83,7 @@ enum {
Opt_serverino, Opt_noserverino,
Opt_rwpidforward, Opt_cifsacl, Opt_nocifsacl,
Opt_acl, Opt_noacl, Opt_locallease,
- Opt_sign, Opt_seal, Opt_direct,
- Opt_strictcache, Opt_noac,
+ Opt_sign, Opt_seal, Opt_noac,
Opt_fsc, Opt_mfsymlinks,
Opt_multiuser, Opt_sloppy,
@@ -121,6 +118,8 @@ static const match_table_t cifs_mount_option_tokens = {
{ Opt_nouser_xattr, "nouser_xattr" },
{ Opt_forceuid, "forceuid" },
{ Opt_noforceuid, "noforceuid" },
+ { Opt_forcegid, "forcegid" },
+ { Opt_noforcegid, "noforcegid" },
{ Opt_noblocksend, "noblocksend" },
{ Opt_noautotune, "noautotune" },
{ Opt_hard, "hard" },
@@ -163,10 +162,6 @@ static const match_table_t cifs_mount_option_tokens = {
{ Opt_locallease, "locallease" },
{ Opt_sign, "sign" },
{ Opt_seal, "seal" },
- { Opt_direct, "direct" },
- { Opt_direct, "directio" },
- { Opt_direct, "forcedirectio" },
- { Opt_strictcache, "strictcache" },
{ Opt_noac, "noac" },
{ Opt_fsc, "fsc" },
{ Opt_mfsymlinks, "mfsymlinks" },
@@ -191,6 +186,7 @@ static const match_table_t cifs_mount_option_tokens = {
{ Opt_user, "user=%s" },
{ Opt_user, "username=%s" },
{ Opt_blank_pass, "pass=" },
+ { Opt_blank_pass, "password=" },
{ Opt_pass, "pass=%s" },
{ Opt_pass, "password=%s" },
{ Opt_blank_ip, "ip=" },
@@ -238,8 +234,8 @@ static const match_table_t cifs_mount_option_tokens = {
enum {
Opt_sec_krb5, Opt_sec_krb5i, Opt_sec_krb5p,
Opt_sec_ntlmsspi, Opt_sec_ntlmssp,
- Opt_ntlm, Opt_sec_ntlmi, Opt_sec_ntlmv2i,
- Opt_sec_nontlm, Opt_sec_lanman,
+ Opt_ntlm, Opt_sec_ntlmi, Opt_sec_ntlmv2,
+ Opt_sec_ntlmv2i, Opt_sec_lanman,
Opt_sec_none,
Opt_sec_err
@@ -253,8 +249,9 @@ static const match_table_t cifs_secflavor_tokens = {
{ Opt_sec_ntlmssp, "ntlmssp" },
{ Opt_ntlm, "ntlm" },
{ Opt_sec_ntlmi, "ntlmi" },
+ { Opt_sec_ntlmv2, "nontlm" },
+ { Opt_sec_ntlmv2, "ntlmv2" },
{ Opt_sec_ntlmv2i, "ntlmv2i" },
- { Opt_sec_nontlm, "nontlm" },
{ Opt_sec_lanman, "lanman" },
{ Opt_sec_none, "none" },
@@ -278,7 +275,9 @@ static const match_table_t cifs_cacheflavor_tokens = {
static const match_table_t cifs_smb_version_tokens = {
{ Smb_1, SMB1_VERSION_STRING },
+ { Smb_20, SMB20_VERSION_STRING},
{ Smb_21, SMB21_VERSION_STRING },
+ { Smb_30, SMB30_VERSION_STRING },
};
static int ip_connect(struct TCP_Server_Info *server);
@@ -296,7 +295,7 @@ static int cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data,
* reconnect tcp session
* wake up waiters on reconnection? - (not needed currently)
*/
-static int
+int
cifs_reconnect(struct TCP_Server_Info *server)
{
int rc = 0;
@@ -316,6 +315,9 @@ cifs_reconnect(struct TCP_Server_Info *server)
server->tcpStatus = CifsNeedReconnect;
spin_unlock(&GlobalMid_Lock);
server->maxBuf = 0;
+#ifdef CONFIG_CIFS_SMB2
+ server->max_read = 0;
+#endif
cFYI(1, "Reconnecting tcp session");
@@ -394,143 +396,6 @@ cifs_reconnect(struct TCP_Server_Info *server)
return rc;
}
-/*
- return codes:
- 0 not a transact2, or all data present
- >0 transact2 with that much data missing
- -EINVAL = invalid transact2
-
- */
-static int check2ndT2(char *buf)
-{
- struct smb_hdr *pSMB = (struct smb_hdr *)buf;
- struct smb_t2_rsp *pSMBt;
- int remaining;
- __u16 total_data_size, data_in_this_rsp;
-
- if (pSMB->Command != SMB_COM_TRANSACTION2)
- return 0;
-
- /* check for plausible wct, bcc and t2 data and parm sizes */
- /* check for parm and data offset going beyond end of smb */
- if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
- cFYI(1, "invalid transact2 word count");
- return -EINVAL;
- }
-
- pSMBt = (struct smb_t2_rsp *)pSMB;
-
- total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
- data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
-
- if (total_data_size == data_in_this_rsp)
- return 0;
- else if (total_data_size < data_in_this_rsp) {
- cFYI(1, "total data %d smaller than data in frame %d",
- total_data_size, data_in_this_rsp);
- return -EINVAL;
- }
-
- remaining = total_data_size - data_in_this_rsp;
-
- cFYI(1, "missing %d bytes from transact2, check next response",
- remaining);
- if (total_data_size > CIFSMaxBufSize) {
- cERROR(1, "TotalDataSize %d is over maximum buffer %d",
- total_data_size, CIFSMaxBufSize);
- return -EINVAL;
- }
- return remaining;
-}
-
-static int coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
-{
- struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)second_buf;
- struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)target_hdr;
- char *data_area_of_tgt;
- char *data_area_of_src;
- int remaining;
- unsigned int byte_count, total_in_tgt;
- __u16 tgt_total_cnt, src_total_cnt, total_in_src;
-
- src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount);
- tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
-
- if (tgt_total_cnt != src_total_cnt)
- cFYI(1, "total data count of primary and secondary t2 differ "
- "source=%hu target=%hu", src_total_cnt, tgt_total_cnt);
-
- total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
-
- remaining = tgt_total_cnt - total_in_tgt;
-
- if (remaining < 0) {
- cFYI(1, "Server sent too much data. tgt_total_cnt=%hu "
- "total_in_tgt=%hu", tgt_total_cnt, total_in_tgt);
- return -EPROTO;
- }
-
- if (remaining == 0) {
- /* nothing to do, ignore */
- cFYI(1, "no more data remains");
- return 0;
- }
-
- total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount);
- if (remaining < total_in_src)
- cFYI(1, "transact2 2nd response contains too much data");
-
- /* find end of first SMB data area */
- data_area_of_tgt = (char *)&pSMBt->hdr.Protocol +
- get_unaligned_le16(&pSMBt->t2_rsp.DataOffset);
-
- /* validate target area */
- data_area_of_src = (char *)&pSMBs->hdr.Protocol +
- get_unaligned_le16(&pSMBs->t2_rsp.DataOffset);
-
- data_area_of_tgt += total_in_tgt;
-
- total_in_tgt += total_in_src;
- /* is the result too big for the field? */
- if (total_in_tgt > USHRT_MAX) {
- cFYI(1, "coalesced DataCount too large (%u)", total_in_tgt);
- return -EPROTO;
- }
- put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount);
-
- /* fix up the BCC */
- byte_count = get_bcc(target_hdr);
- byte_count += total_in_src;
- /* is the result too big for the field? */
- if (byte_count > USHRT_MAX) {
- cFYI(1, "coalesced BCC too large (%u)", byte_count);
- return -EPROTO;
- }
- put_bcc(byte_count, target_hdr);
-
- byte_count = be32_to_cpu(target_hdr->smb_buf_length);
- byte_count += total_in_src;
- /* don't allow buffer to overflow */
- if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
- cFYI(1, "coalesced BCC exceeds buffer size (%u)", byte_count);
- return -ENOBUFS;
- }
- target_hdr->smb_buf_length = cpu_to_be32(byte_count);
-
- /* copy second buffer into end of first buffer */
- memcpy(data_area_of_tgt, data_area_of_src, total_in_src);
-
- if (remaining != total_in_src) {
- /* more responses to go */
- cFYI(1, "waiting for more secondary responses");
- return 1;
- }
-
- /* we are done */
- cFYI(1, "found the last secondary response");
- return 0;
-}
-
static void
cifs_echo_request(struct work_struct *work)
{
@@ -539,15 +404,17 @@ cifs_echo_request(struct work_struct *work)
struct TCP_Server_Info, echo.work);
/*
- * We cannot send an echo until the NEGOTIATE_PROTOCOL request is
- * done, which is indicated by maxBuf != 0. Also, no need to ping if
- * we got a response recently
+ * We cannot send an echo if it is disabled or until the
+ * NEGOTIATE_PROTOCOL request is done, which is indicated by
+ * server->ops->need_neg() == true. Also, no need to ping if
+ * we got a response recently.
*/
- if (server->maxBuf == 0 ||
+ if (!server->ops->need_neg || server->ops->need_neg(server) ||
+ (server->ops->can_echo && !server->ops->can_echo(server)) ||
time_before(jiffies, server->lstrp + SMB_ECHO_INTERVAL - HZ))
goto requeue_echo;
- rc = CIFSSMBEcho(server);
+ rc = server->ops->echo ? server->ops->echo(server) : -ENOSYS;
if (rc)
cFYI(1, "Unable to send echo request to server: %s",
server->hostname);
@@ -803,29 +670,9 @@ static void
handle_mid(struct mid_q_entry *mid, struct TCP_Server_Info *server,
char *buf, int malformed)
{
- if (malformed == 0 && check2ndT2(buf) > 0) {
- mid->multiRsp = true;
- if (mid->resp_buf) {
- /* merge response - fix up 1st*/
- malformed = coalesce_t2(buf, mid->resp_buf);
- if (malformed > 0)
- return;
-
- /* All parts received or packet is malformed. */
- mid->multiEnd = true;
- return dequeue_mid(mid, malformed);
- }
- if (!server->large_buf) {
- /*FIXME: switch to already allocated largebuf?*/
- cERROR(1, "1st trans2 resp needs bigbuf");
- } else {
- /* Have first buffer */
- mid->resp_buf = buf;
- mid->large_buf = true;
- server->bigbuf = NULL;
- }
+ if (server->ops->check_trans2 &&
+ server->ops->check_trans2(mid, server, buf, malformed))
return;
- }
mid->resp_buf = buf;
mid->large_buf = server->large_buf;
/* Was previous buf put in mpx struct for multi-rsp? */
@@ -973,6 +820,10 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid)
cifs_dump_mem("Bad SMB: ", buf,
min_t(unsigned int, server->total_read, 48));
+ if (server->ops->is_status_pending &&
+ server->ops->is_status_pending(buf, server, length))
+ return -1;
+
if (!mid)
return length;
@@ -1167,7 +1018,7 @@ static int cifs_parse_security_flavors(char *value,
case Opt_sec_ntlmi:
vol->secFlg |= CIFSSEC_MAY_NTLM | CIFSSEC_MUST_SIGN;
break;
- case Opt_sec_nontlm:
+ case Opt_sec_ntlmv2:
vol->secFlg |= CIFSSEC_MAY_NTLMV2;
break;
case Opt_sec_ntlmv2i:
@@ -1225,10 +1076,18 @@ cifs_parse_smb_version(char *value, struct smb_vol *vol)
vol->vals = &smb1_values;
break;
#ifdef CONFIG_CIFS_SMB2
+ case Smb_20:
+ vol->ops = &smb21_operations; /* currently identical with 2.1 */
+ vol->vals = &smb20_values;
+ break;
case Smb_21:
vol->ops = &smb21_operations;
vol->vals = &smb21_values;
break;
+ case Smb_30:
+ vol->ops = &smb30_operations;
+ vol->vals = &smb30_values;
+ break;
#endif
default:
cERROR(1, "Unknown vers= option specified: %s", value);
@@ -1237,6 +1096,52 @@ cifs_parse_smb_version(char *value, struct smb_vol *vol)
return 0;
}
+/*
+ * Parse a devname into substrings and populate the vol->UNC and vol->prepath
+ * fields with the result. Returns 0 on success and an error otherwise.
+ */
+static int
+cifs_parse_devname(const char *devname, struct smb_vol *vol)
+{
+ char *pos;
+ const char *delims = "/\\";
+ size_t len;
+
+ /* make sure we have a valid UNC double delimiter prefix */
+ len = strspn(devname, delims);
+ if (len != 2)
+ return -EINVAL;
+
+ /* find delimiter between host and sharename */
+ pos = strpbrk(devname + 2, delims);
+ if (!pos)
+ return -EINVAL;
+
+ /* skip past delimiter */
+ ++pos;
+
+ /* now go until next delimiter or end of string */
+ len = strcspn(pos, delims);
+
+ /* move "pos" up to delimiter or NULL */
+ pos += len;
+ vol->UNC = kstrndup(devname, pos - devname, GFP_KERNEL);
+ if (!vol->UNC)
+ return -ENOMEM;
+
+ convert_delimiter(vol->UNC, '\\');
+
+ /* If pos is NULL, or is a bogus trailing delimiter then no prepath */
+ if (!*pos++ || !*pos)
+ return 0;
+
+ vol->prepath = kstrdup(pos, GFP_KERNEL);
+ if (!vol->prepath)
+ return -ENOMEM;
+
+ return 0;
+}
+
static int
cifs_parse_mount_options(const char *mountdata, const char *devname,
struct smb_vol *vol)
@@ -1255,13 +1160,17 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
char *string = NULL;
char *tmp_end, *value;
char delim;
- bool cache_specified = false;
- static bool cache_warned = false;
+ bool got_ip = false;
+ unsigned short port = 0;
+ struct sockaddr *dstaddr = (struct sockaddr *)&vol->dstaddr;
separator[0] = ',';
separator[1] = 0;
delim = separator[0];
+ /* ensure we always start with zeroed-out smb_vol */
+ memset(vol, 0, sizeof(*vol));
+
/*
* does not have to be perfect mapping since field is
* informational, only used for servers that do not support
@@ -1288,6 +1197,9 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
/* default to using server inode numbers where available */
vol->server_ino = 1;
+ /* default is to use strict cifs caching semantics */
+ vol->strict_io = true;
+
vol->actimeo = CIFS_DEF_ACTIMEO;
/* FIXME: add autonegotiation -- for now, SMB1 is default */
@@ -1315,6 +1227,16 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
vol->backupuid_specified = false; /* no backup intent for a user */
vol->backupgid_specified = false; /* no backup intent for a group */
+ /*
+ * For now, we ignore -EINVAL errors under the assumption that the
+ * unc= and prefixpath= options will be usable.
+ */
+ if (cifs_parse_devname(devname, vol) == -ENOMEM) {
+ printk(KERN_ERR "CIFS: Unable to allocate memory to parse "
+ "device string.\n");
+ goto out_nomem;
+ }
+
while ((data = strsep(&options, separator)) != NULL) {
substring_t args[MAX_OPT_ARGS];
unsigned long option;
@@ -1344,6 +1266,12 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
case Opt_noforceuid:
override_uid = 0;
break;
+ case Opt_forcegid:
+ override_gid = 1;
+ break;
+ case Opt_noforcegid:
+ override_gid = 0;
+ break;
case Opt_noblocksend:
vol->noblocksnd = 1;
break;
@@ -1471,22 +1399,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
*/
vol->seal = 1;
break;
- case Opt_direct:
- cache_specified = true;
- vol->direct_io = true;
- vol->strict_io = false;
- cERROR(1, "The \"directio\" option will be removed in "
- "3.7. Please switch to the \"cache=none\" "
- "option.");
- break;
- case Opt_strictcache:
- cache_specified = true;
- vol->direct_io = false;
- vol->strict_io = true;
- cERROR(1, "The \"strictcache\" option will be removed "
- "in 3.7. Please switch to the \"cache=strict\" "
- "option.");
- break;
case Opt_noac:
printk(KERN_WARNING "CIFS: Mount option noac not "
"supported. Instead set "
@@ -1572,12 +1484,12 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
vol->dir_mode = option;
break;
case Opt_port:
- if (get_option_ul(args, &option)) {
- cERROR(1, "%s: Invalid port value",
- __func__);
+ if (get_option_ul(args, &option) ||
+ option > USHRT_MAX) {
+ cERROR(1, "%s: Invalid port value", __func__);
goto cifs_parse_mount_err;
}
- vol->port = option;
+ port = (unsigned short)option;
break;
case Opt_rsize:
if (get_option_ul(args, &option)) {
@@ -1693,53 +1605,45 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
vol->password[j] = '\0';
break;
case Opt_blank_ip:
- vol->UNCip = NULL;
+ /* FIXME: should this be an error instead? */
+ got_ip = false;
break;
case Opt_ip:
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
- if (strnlen(string, INET6_ADDRSTRLEN) >
- INET6_ADDRSTRLEN) {
- printk(KERN_WARNING "CIFS: ip address "
- "too long\n");
- goto cifs_parse_mount_err;
- }
- vol->UNCip = kstrdup(string, GFP_KERNEL);
- if (!vol->UNCip) {
- printk(KERN_WARNING "CIFS: no memory "
- "for UNC IP\n");
+ if (!cifs_convert_address(dstaddr, string,
+ strlen(string))) {
+ printk(KERN_ERR "CIFS: bad ip= option (%s).\n",
+ string);
goto cifs_parse_mount_err;
}
+ got_ip = true;
break;
case Opt_unc:
- string = match_strdup(args);
- if (string == NULL)
+ string = vol->UNC;
+ vol->UNC = match_strdup(args);
+ if (vol->UNC == NULL)
goto out_nomem;
- temp_len = strnlen(string, 300);
- if (temp_len == 300) {
- printk(KERN_WARNING "CIFS: UNC name too long\n");
- goto cifs_parse_mount_err;
- }
-
- vol->UNC = kmalloc(temp_len+1, GFP_KERNEL);
- if (vol->UNC == NULL) {
- printk(KERN_WARNING "CIFS: no memory for UNC\n");
- goto cifs_parse_mount_err;
- }
- strcpy(vol->UNC, string);
-
- if (strncmp(string, "//", 2) == 0) {
- vol->UNC[0] = '\\';
- vol->UNC[1] = '\\';
- } else if (strncmp(string, "\\\\", 2) != 0) {
- printk(KERN_WARNING "CIFS: UNC Path does not "
- "begin with // or \\\\\n");
+ convert_delimiter(vol->UNC, '\\');
+ if (vol->UNC[0] != '\\' || vol->UNC[1] != '\\') {
+ printk(KERN_ERR "CIFS: UNC Path does not "
+ "begin with // or \\\\\n");
goto cifs_parse_mount_err;
}
+ /* Compare old unc= option to new one */
+ if (!string || strcmp(string, vol->UNC))
+ printk(KERN_WARNING "CIFS: the value of the "
+ "unc= mount option does not match the "
+ "device string. Using the unc= option "
+ "for now. In 3.10, that option will "
+ "be ignored and the contents of the "
+ "device string will be used "
+ "instead. (%s != %s)\n", string,
+ vol->UNC);
break;
case Opt_domain:
string = match_strdup(args);
@@ -1774,31 +1678,24 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
}
break;
case Opt_prefixpath:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
-
- temp_len = strnlen(string, 1024);
- if (string[0] != '/')
- temp_len++; /* missing leading slash */
- if (temp_len > 1024) {
- printk(KERN_WARNING "CIFS: prefix too long\n");
- goto cifs_parse_mount_err;
- }
-
- vol->prepath = kmalloc(temp_len+1, GFP_KERNEL);
- if (vol->prepath == NULL) {
- printk(KERN_WARNING "CIFS: no memory "
- "for path prefix\n");
- goto cifs_parse_mount_err;
- }
-
- if (string[0] != '/') {
- vol->prepath[0] = '/';
- strcpy(vol->prepath+1, string);
- } else
- strcpy(vol->prepath, string);
+ /* skip over any leading delimiter */
+ if (*args[0].from == '/' || *args[0].from == '\\')
+ args[0].from++;
+ string = vol->prepath;
+ vol->prepath = match_strdup(args);
+ if (vol->prepath == NULL)
+ goto out_nomem;
+ /* Compare old prefixpath= option to new one */
+ if (!string || strcmp(string, vol->prepath))
+ printk(KERN_WARNING "CIFS: the value of the "
+ "prefixpath= mount option does not "
+ "match the device string. Using the "
+ "prefixpath= option for now. In 3.10, "
+ "that option will be ignored and the "
+ "contents of the device string will be "
+ "used instead.(%s != %s)\n", string,
+ vol->prepath);
break;
case Opt_iocharset:
string = match_strdup(args);
@@ -1830,8 +1727,13 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
if (string == NULL)
goto out_nomem;
- if (strnicmp(string, "TCP_NODELAY", 11) == 0)
+ if (strnicmp(string, "TCP_NODELAY", 11) == 0) {
+ printk(KERN_WARNING "CIFS: the "
+ "sockopt=TCP_NODELAY option has been "
+ "deprecated and will be removed "
+ "in 3.9\n");
vol->sockopt_tcp_nodelay = 1;
+ }
break;
case Opt_netbiosname:
string = match_strdup(args);
@@ -1916,7 +1818,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
goto cifs_parse_mount_err;
break;
case Opt_cache:
- cache_specified = true;
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
@@ -1951,9 +1852,30 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
goto cifs_parse_mount_err;
}
#endif
+ if (!vol->UNC) {
+ cERROR(1, "CIFS mount error: No usable UNC path provided in "
+ "device string or in unc= option!");
+ goto cifs_parse_mount_err;
+ }
+
+ /* make sure UNC has a share name */
+ if (!strchr(vol->UNC + 3, '\\')) {
+ cERROR(1, "Malformed UNC. Unable to find share name.");
+ goto cifs_parse_mount_err;
+ }
+
+ if (!got_ip) {
+ /* No ip= option specified? Try to get it from UNC */
+ if (!cifs_convert_address(dstaddr, &vol->UNC[2],
+ strlen(&vol->UNC[2]))) {
+ printk(KERN_ERR "Unable to determine destination "
+ "address.\n");
+ goto cifs_parse_mount_err;
+ }
+ }
- if (vol->UNCip == NULL)
- vol->UNCip = &vol->UNC[2];
+ /* set the port that we got earlier */
+ cifs_set_port(dstaddr, port);
if (uid_specified)
vol->override_uid = override_uid;
@@ -1967,14 +1889,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
printk(KERN_NOTICE "CIFS: ignoring forcegid mount option "
"specified with no gid= option.\n");
- /* FIXME: remove this block in 3.7 */
- if (!cache_specified && !cache_warned) {
- cache_warned = true;
- printk(KERN_NOTICE "CIFS: no cache= option specified, using "
- "\"cache=loose\". This default will change "
- "to \"cache=strict\" in 3.7.\n");
- }
-
kfree(mountdata_copy);
return 0;
@@ -2003,7 +1917,7 @@ srcip_matches(struct sockaddr *srcaddr, struct sockaddr *rhs)
}
case AF_INET6: {
struct sockaddr_in6 *saddr6 = (struct sockaddr_in6 *)srcaddr;
- struct sockaddr_in6 *vaddr6 = (struct sockaddr_in6 *)&rhs;
+ struct sockaddr_in6 *vaddr6 = (struct sockaddr_in6 *)rhs;
return ipv6_addr_equal(&saddr6->sin6_addr, &vaddr6->sin6_addr);
}
default:
@@ -2132,9 +2046,10 @@ match_security(struct TCP_Server_Info *server, struct smb_vol *vol)
return true;
}
-static int match_server(struct TCP_Server_Info *server, struct sockaddr *addr,
- struct smb_vol *vol)
+static int match_server(struct TCP_Server_Info *server, struct smb_vol *vol)
{
+ struct sockaddr *addr = (struct sockaddr *)&vol->dstaddr;
+
if ((server->vals != vol->vals) || (server->ops != vol->ops))
return 0;
@@ -2155,13 +2070,13 @@ static int match_server(struct TCP_Server_Info *server, struct sockaddr *addr,
}
static struct TCP_Server_Info *
-cifs_find_tcp_session(struct sockaddr *addr, struct smb_vol *vol)
+cifs_find_tcp_session(struct smb_vol *vol)
{
struct TCP_Server_Info *server;
spin_lock(&cifs_tcp_ses_lock);
list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
- if (!match_server(server, addr, vol))
+ if (!match_server(server, vol))
continue;
++server->srv_count;
@@ -2211,40 +2126,12 @@ static struct TCP_Server_Info *
cifs_get_tcp_session(struct smb_vol *volume_info)
{
struct TCP_Server_Info *tcp_ses = NULL;
- struct sockaddr_storage addr;
- struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr;
- struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr;
int rc;
- memset(&addr, 0, sizeof(struct sockaddr_storage));
-
- cFYI(1, "UNC: %s ip: %s", volume_info->UNC, volume_info->UNCip);
-
- if (volume_info->UNCip && volume_info->UNC) {
- rc = cifs_fill_sockaddr((struct sockaddr *)&addr,
- volume_info->UNCip,
- strlen(volume_info->UNCip),
- volume_info->port);
- if (!rc) {
- /* we failed translating address */
- rc = -EINVAL;
- goto out_err;
- }
- } else if (volume_info->UNCip) {
- /* BB using ip addr as tcp_ses name to connect to the
- DFS root below */
- cERROR(1, "Connecting to DFS root not implemented yet");
- rc = -EINVAL;
- goto out_err;
- } else /* which tcp_sess DFS root would we conect to */ {
- cERROR(1, "CIFS mount error: No UNC path (e.g. -o "
- "unc=//192.168.1.100/public) specified");
- rc = -EINVAL;
- goto out_err;
- }
+ cFYI(1, "UNC: %s", volume_info->UNC);
/* see if we already have a matching tcp_ses */
- tcp_ses = cifs_find_tcp_session((struct sockaddr *)&addr, volume_info);
+ tcp_ses = cifs_find_tcp_session(volume_info);
if (tcp_ses)
return tcp_ses;
@@ -2289,27 +2176,18 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
INIT_LIST_HEAD(&tcp_ses->tcp_ses_list);
INIT_LIST_HEAD(&tcp_ses->smb_ses_list);
INIT_DELAYED_WORK(&tcp_ses->echo, cifs_echo_request);
-
+ memcpy(&tcp_ses->srcaddr, &volume_info->srcaddr,
+ sizeof(tcp_ses->srcaddr));
+ memcpy(&tcp_ses->dstaddr, &volume_info->dstaddr,
+ sizeof(tcp_ses->dstaddr));
/*
* at this point we are the only ones with the pointer
* to the struct since the kernel thread not created yet
* no need to spinlock this init of tcpStatus or srv_count
*/
tcp_ses->tcpStatus = CifsNew;
- memcpy(&tcp_ses->srcaddr, &volume_info->srcaddr,
- sizeof(tcp_ses->srcaddr));
++tcp_ses->srv_count;
- if (addr.ss_family == AF_INET6) {
- 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->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");
@@ -2409,10 +2287,10 @@ cifs_find_smb_ses(struct TCP_Server_Info *server, struct smb_vol *vol)
static void
cifs_put_smb_ses(struct cifs_ses *ses)
{
- int xid;
+ unsigned int xid;
struct TCP_Server_Info *server = ses->server;
- cFYI(1, "%s: ses_count=%d\n", __func__, ses->ses_count);
+ cFYI(1, "%s: ses_count=%d", __func__, ses->ses_count);
spin_lock(&cifs_tcp_ses_lock);
if (--ses->ses_count > 0) {
spin_unlock(&cifs_tcp_ses_lock);
@@ -2422,10 +2300,10 @@ cifs_put_smb_ses(struct cifs_ses *ses)
list_del_init(&ses->smb_ses_list);
spin_unlock(&cifs_tcp_ses_lock);
- if (ses->status == CifsGood) {
- xid = GetXid();
- CIFSSMBLogoff(xid, ses);
- _FreeXid(xid);
+ if (ses->status == CifsGood && server->ops->logoff) {
+ xid = get_xid();
+ server->ops->logoff(xid, ses);
+ _free_xid(xid);
}
sesInfoFree(ses);
cifs_put_tcp_session(server);
@@ -2557,17 +2435,16 @@ cifs_set_cifscreds(struct smb_vol *vol __attribute__((unused)),
}
#endif /* CONFIG_KEYS */
-static bool warned_on_ntlm; /* globals init to false automatically */
-
static struct cifs_ses *
cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
{
- int rc = -ENOMEM, xid;
+ int rc = -ENOMEM;
+ unsigned int xid;
struct cifs_ses *ses;
struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr;
struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr;
- xid = GetXid();
+ xid = get_xid();
ses = cifs_find_smb_ses(server, volume_info);
if (ses) {
@@ -2579,7 +2456,7 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
mutex_unlock(&ses->session_mutex);
/* problem -- put our ses reference */
cifs_put_smb_ses(ses);
- FreeXid(xid);
+ free_xid(xid);
return ERR_PTR(rc);
}
if (ses->need_reconnect) {
@@ -2590,7 +2467,7 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
mutex_unlock(&ses->session_mutex);
/* problem -- put our reference */
cifs_put_smb_ses(ses);
- FreeXid(xid);
+ free_xid(xid);
return ERR_PTR(rc);
}
}
@@ -2598,7 +2475,7 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
/* existing SMB ses has a server reference already */
cifs_put_tcp_session(server);
- FreeXid(xid);
+ free_xid(xid);
return ses;
}
@@ -2634,14 +2511,6 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
ses->cred_uid = volume_info->cred_uid;
ses->linux_uid = volume_info->linux_uid;
- /* ntlmv2 is much stronger than ntlm security, and has been broadly
- supported for many years, time to update default security mechanism */
- if ((volume_info->secFlg == 0) && warned_on_ntlm == false) {
- warned_on_ntlm = true;
- cERROR(1, "default security mechanism requested. The default "
- "security mechanism will be upgraded from ntlm to "
- "ntlmv2 in kernel release 3.3");
- }
ses->overrideSecFlg = volume_info->secFlg;
mutex_lock(&ses->session_mutex);
@@ -2657,12 +2526,12 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
list_add(&ses->smb_ses_list, &server->smb_ses_list);
spin_unlock(&cifs_tcp_ses_lock);
- FreeXid(xid);
+ free_xid(xid);
return ses;
get_ses_fail:
sesInfoFree(ses);
- FreeXid(xid);
+ free_xid(xid);
return ERR_PTR(rc);
}
@@ -2697,10 +2566,10 @@ cifs_find_tcon(struct cifs_ses *ses, const char *unc)
static void
cifs_put_tcon(struct cifs_tcon *tcon)
{
- int xid;
+ unsigned int xid;
struct cifs_ses *ses = tcon->ses;
- cFYI(1, "%s: tc_count=%d\n", __func__, tcon->tc_count);
+ cFYI(1, "%s: tc_count=%d", __func__, tcon->tc_count);
spin_lock(&cifs_tcp_ses_lock);
if (--tcon->tc_count > 0) {
spin_unlock(&cifs_tcp_ses_lock);
@@ -2710,9 +2579,10 @@ cifs_put_tcon(struct cifs_tcon *tcon)
list_del_init(&tcon->tcon_list);
spin_unlock(&cifs_tcp_ses_lock);
- xid = GetXid();
- CIFSSMBTDis(xid, tcon);
- _FreeXid(xid);
+ xid = get_xid();
+ if (ses->server->ops->tree_disconnect)
+ ses->server->ops->tree_disconnect(xid, tcon);
+ _free_xid(xid);
cifs_fscache_release_super_cookie(tcon);
tconInfoFree(tcon);
@@ -2736,6 +2606,11 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info)
return tcon;
}
+ if (!ses->server->ops->tree_connect) {
+ rc = -ENOSYS;
+ goto out_fail;
+ }
+
tcon = tconInfoAlloc();
if (tcon == NULL) {
rc = -ENOMEM;
@@ -2751,20 +2626,15 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info)
}
}
- if (strchr(volume_info->UNC + 3, '\\') == NULL
- && strchr(volume_info->UNC + 3, '/') == NULL) {
- cERROR(1, "Missing share name");
- rc = -ENODEV;
- goto out_fail;
- }
-
- /* BB Do we need to wrap session_mutex around
- * this TCon call and Unix SetFS as
- * we do on SessSetup and reconnect? */
- xid = GetXid();
- rc = CIFSTCon(xid, ses, volume_info->UNC, tcon, volume_info->local_nls);
- FreeXid(xid);
- cFYI(1, "CIFS Tcon rc = %d", rc);
+ /*
+ * BB Do we need to wrap session_mutex around this TCon call and Unix
+ * SetFS as we do on SessSetup and reconnect?
+ */
+ xid = get_xid();
+ rc = ses->server->ops->tree_connect(xid, ses, volume_info->UNC, tcon,
+ volume_info->local_nls);
+ free_xid(xid);
+ cFYI(1, "Tcon rc = %d", rc);
if (rc)
goto out_fail;
@@ -2773,13 +2643,15 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info)
cFYI(1, "DFS disabled (%d)", tcon->Flags);
}
tcon->seal = volume_info->seal;
- /* we can have only one retry value for a connection
- to a share so for resources mounted more than once
- to the same server share the last value passed in
- for the retry flag is used */
+ /*
+ * We can have only one retry value for a connection to a share so for
+ * resources mounted more than once to the same server share the last
+ * value passed in for the retry flag is used.
+ */
tcon->retry = volume_info->retry;
tcon->nocase = volume_info->nocase;
tcon->local_lease = volume_info->local_lease;
+ INIT_LIST_HEAD(&tcon->pending_opens);
spin_lock(&cifs_tcp_ses_lock);
list_add(&tcon->tcon_list, &ses->tcon_list);
@@ -2867,11 +2739,8 @@ cifs_match_super(struct super_block *sb, void *data)
struct cifs_ses *ses;
struct cifs_tcon *tcon;
struct tcon_link *tlink;
- struct sockaddr_storage addr;
int rc = 0;
- memset(&addr, 0, sizeof(struct sockaddr_storage));
-
spin_lock(&cifs_tcp_ses_lock);
cifs_sb = CIFS_SB(sb);
tlink = cifs_get_tlink(cifs_sb_master_tlink(cifs_sb));
@@ -2885,17 +2754,7 @@ cifs_match_super(struct super_block *sb, void *data)
volume_info = mnt_data->vol;
- if (!volume_info->UNCip || !volume_info->UNC)
- goto out;
-
- rc = cifs_fill_sockaddr((struct sockaddr *)&addr,
- volume_info->UNCip,
- strlen(volume_info->UNCip),
- volume_info->port);
- if (!rc)
- goto out;
-
- if (!match_server(tcp_srv, (struct sockaddr *)&addr, volume_info) ||
+ if (!match_server(tcp_srv, volume_info) ||
!match_session(ses, volume_info) ||
!match_tcon(tcon, volume_info->UNC)) {
rc = 0;
@@ -2910,37 +2769,42 @@ out:
}
int
-get_dfs_path(int xid, struct cifs_ses *pSesInfo, const char *old_path,
- const struct nls_table *nls_codepage, unsigned int *pnum_referrals,
- struct dfs_info3_param **preferrals, int remap)
+get_dfs_path(const unsigned int xid, struct cifs_ses *ses, const char *old_path,
+ const struct nls_table *nls_codepage, unsigned int *num_referrals,
+ struct dfs_info3_param **referrals, int remap)
{
char *temp_unc;
int rc = 0;
- *pnum_referrals = 0;
- *preferrals = NULL;
+ if (!ses->server->ops->tree_connect || !ses->server->ops->get_dfs_refer)
+ return -ENOSYS;
- if (pSesInfo->ipc_tid == 0) {
+ *num_referrals = 0;
+ *referrals = NULL;
+
+ if (ses->ipc_tid == 0) {
temp_unc = kmalloc(2 /* for slashes */ +
- strnlen(pSesInfo->serverName,
- SERVER_NAME_LEN_WITH_NULL * 2)
- + 1 + 4 /* slash IPC$ */ + 2,
- GFP_KERNEL);
+ strnlen(ses->serverName, SERVER_NAME_LEN_WITH_NULL * 2)
+ + 1 + 4 /* slash IPC$ */ + 2, GFP_KERNEL);
if (temp_unc == NULL)
return -ENOMEM;
temp_unc[0] = '\\';
temp_unc[1] = '\\';
- strcpy(temp_unc + 2, pSesInfo->serverName);
- strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$");
- rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage);
- cFYI(1, "CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid);
+ strcpy(temp_unc + 2, ses->serverName);
+ strcpy(temp_unc + 2 + strlen(ses->serverName), "\\IPC$");
+ rc = ses->server->ops->tree_connect(xid, ses, temp_unc, NULL,
+ nls_codepage);
+ cFYI(1, "Tcon rc = %d ipc_tid = %d", rc, ses->ipc_tid);
kfree(temp_unc);
}
if (rc == 0)
- rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals,
- pnum_referrals, nls_codepage, remap);
- /* BB map targetUNCs to dfs_info3 structures, here or
- in CIFSGetDFSRefer BB */
+ rc = ses->server->ops->get_dfs_refer(xid, ses, old_path,
+ referrals, num_referrals,
+ nls_codepage, remap);
+ /*
+ * BB - map targetUNCs to dfs_info3 structures, here or in
+ * ses->server->ops->get_dfs_refer.
+ */
return rc;
}
@@ -3009,11 +2873,11 @@ bind_socket(struct TCP_Server_Info *server)
saddr6 = (struct sockaddr_in6 *)&server->srcaddr;
if (saddr6->sin6_family == AF_INET6)
cERROR(1, "cifs: "
- "Failed to bind to: %pI6c, error: %d\n",
+ "Failed to bind to: %pI6c, error: %d",
&saddr6->sin6_addr, rc);
else
cERROR(1, "cifs: "
- "Failed to bind to: %pI4, error: %d\n",
+ "Failed to bind to: %pI4, error: %d",
&saddr4->sin_addr.s_addr, rc);
}
}
@@ -3209,7 +3073,7 @@ ip_connect(struct TCP_Server_Info *server)
return generic_ip_connect(server);
}
-void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon,
+void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, struct smb_vol *vol_info)
{
/* if we are reconnecting then should we check to see if
@@ -3304,9 +3168,9 @@ void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon,
cFYI(1, "resetting capabilities failed");
} else
cERROR(1, "Negotiating Unix capabilities "
- "with the server failed. Consider "
- "mounting with the Unix Extensions\n"
- "disabled, if problems are found, "
+ "with the server failed. Consider "
+ "mounting with the Unix Extensions "
+ "disabled if problems are found "
"by specifying the nounix mount "
"option.");
@@ -3400,177 +3264,11 @@ void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
"mount option supported");
}
-/*
- * When the server supports very large reads and writes via POSIX extensions,
- * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not
- * including the RFC1001 length.
- *
- * Note that this might make for "interesting" allocation problems during
- * writeback however as we have to allocate an array of pointers for the
- * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096.
- *
- * For reads, there is a similar problem as we need to allocate an array
- * of kvecs to handle the receive, though that should only need to be done
- * once.
- */
-#define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4)
-#define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4)
-
-/*
- * When the server doesn't allow large posix writes, only allow a rsize/wsize
- * of 2^17-1 minus the size of the call header. That allows for a read or
- * write up to the maximum size described by RFC1002.
- */
-#define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4)
-#define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4)
-
-/*
- * The default wsize is 1M. find_get_pages seems to return a maximum of 256
- * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill
- * a single wsize request with a single call.
- */
-#define CIFS_DEFAULT_IOSIZE (1024 * 1024)
-
-/*
- * Windows only supports a max of 60kb reads and 65535 byte writes. Default to
- * those values when posix extensions aren't in force. In actuality here, we
- * use 65536 to allow for a write that is a multiple of 4k. Most servers seem
- * to be ok with the extra byte even though Windows doesn't send writes that
- * are that large.
- *
- * Citation:
- *
- * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx
- */
-#define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024)
-#define CIFS_DEFAULT_NON_POSIX_WSIZE (65536)
-
-/*
- * On hosts with high memory, we can't currently support wsize/rsize that are
- * larger than we can kmap at once. Cap the rsize/wsize at
- * LAST_PKMAP * PAGE_SIZE. We'll never be able to fill a read or write request
- * larger than that anyway.
- */
-#ifdef CONFIG_HIGHMEM
-#define CIFS_KMAP_SIZE_LIMIT (LAST_PKMAP * PAGE_CACHE_SIZE)
-#else /* CONFIG_HIGHMEM */
-#define CIFS_KMAP_SIZE_LIMIT (1<<24)
-#endif /* CONFIG_HIGHMEM */
-
-static unsigned int
-cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info)
-{
- __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
- struct TCP_Server_Info *server = tcon->ses->server;
- unsigned int wsize;
-
- /* start with specified wsize, or default */
- if (pvolume_info->wsize)
- wsize = pvolume_info->wsize;
- else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
- wsize = CIFS_DEFAULT_IOSIZE;
- else
- wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
-
- /* can server support 24-bit write sizes? (via UNIX extensions) */
- if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
- wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
-
- /*
- * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
- * Limit it to max buffer offered by the server, minus the size of the
- * WRITEX header, not including the 4 byte RFC1001 length.
- */
- if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
- (!(server->capabilities & CAP_UNIX) &&
- (server->sec_mode & (SECMODE_SIGN_ENABLED|SECMODE_SIGN_REQUIRED))))
- wsize = min_t(unsigned int, wsize,
- server->maxBuf - sizeof(WRITE_REQ) + 4);
-
- /* limit to the amount that we can kmap at once */
- wsize = min_t(unsigned int, wsize, CIFS_KMAP_SIZE_LIMIT);
-
- /* hard limit of CIFS_MAX_WSIZE */
- wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
-
- return wsize;
-}
-
-static unsigned int
-cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info)
-{
- __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
- struct TCP_Server_Info *server = tcon->ses->server;
- unsigned int rsize, defsize;
-
- /*
- * Set default value...
- *
- * HACK alert! Ancient servers have very small buffers. Even though
- * MS-CIFS indicates that servers are only limited by the client's
- * bufsize for reads, testing against win98se shows that it throws
- * INVALID_PARAMETER errors if you try to request too large a read.
- * OS/2 just sends back short reads.
- *
- * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
- * it can't handle a read request larger than its MaxBufferSize either.
- */
- if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
- defsize = CIFS_DEFAULT_IOSIZE;
- else if (server->capabilities & CAP_LARGE_READ_X)
- defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
- else
- defsize = server->maxBuf - sizeof(READ_RSP);
-
- rsize = pvolume_info->rsize ? pvolume_info->rsize : defsize;
-
- /*
- * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
- * the client's MaxBufferSize.
- */
- if (!(server->capabilities & CAP_LARGE_READ_X))
- rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
-
- /* limit to the amount that we can kmap at once */
- rsize = min_t(unsigned int, rsize, CIFS_KMAP_SIZE_LIMIT);
-
- /* hard limit of CIFS_MAX_RSIZE */
- rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
-
- return rsize;
-}
-
-static int
-is_path_accessible(int xid, struct cifs_tcon *tcon,
- struct cifs_sb_info *cifs_sb, const char *full_path)
-{
- int rc;
- FILE_ALL_INFO *pfile_info;
-
- pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
- if (pfile_info == NULL)
- return -ENOMEM;
-
- rc = CIFSSMBQPathInfo(xid, tcon, full_path, pfile_info,
- 0 /* not legacy */, cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
-
- if (rc == -EOPNOTSUPP || rc == -EINVAL)
- rc = SMBQueryInformation(xid, tcon, full_path, pfile_info,
- cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
- kfree(pfile_info);
- return rc;
-}
-
static void
cleanup_volume_info_contents(struct smb_vol *volume_info)
{
kfree(volume_info->username);
kzfree(volume_info->password);
- if (volume_info->UNCip != volume_info->UNC + 2)
- kfree(volume_info->UNCip);
kfree(volume_info->UNC);
kfree(volume_info->domainname);
kfree(volume_info->iocharset);
@@ -3588,14 +3286,16 @@ cifs_cleanup_volume_info(struct smb_vol *volume_info)
#ifdef CONFIG_CIFS_DFS_UPCALL
-/* build_path_to_root returns full path to root when
- * we do not have an exiting connection (tcon) */
+/*
+ * cifs_build_path_to_root returns full path to root when we do not have an
+ * exiting connection (tcon)
+ */
static char *
build_unc_path_to_root(const struct smb_vol *vol,
const struct cifs_sb_info *cifs_sb)
{
char *full_path, *pos;
- unsigned int pplen = vol->prepath ? strlen(vol->prepath) : 0;
+ unsigned int pplen = vol->prepath ? strlen(vol->prepath) + 1 : 0;
unsigned int unc_len = strnlen(vol->UNC, MAX_TREE_SIZE + 1);
full_path = kmalloc(unc_len + pplen + 1, GFP_KERNEL);
@@ -3606,6 +3306,7 @@ build_unc_path_to_root(const struct smb_vol *vol,
pos = full_path + unc_len;
if (pplen) {
+ *pos++ = CIFS_DIR_SEP(cifs_sb);
strncpy(pos, vol->prepath, pplen);
pos += pplen;
}
@@ -3627,7 +3328,7 @@ build_unc_path_to_root(const struct smb_vol *vol,
* determine whether there were referrals.
*/
static int
-expand_dfs_referral(int xid, struct cifs_ses *pSesInfo,
+expand_dfs_referral(const unsigned int xid, struct cifs_ses *ses,
struct smb_vol *volume_info, struct cifs_sb_info *cifs_sb,
int check_prefix)
{
@@ -3643,7 +3344,7 @@ expand_dfs_referral(int xid, struct cifs_ses *pSesInfo,
/* For DFS paths, skip the first '\' of the UNC */
ref_path = check_prefix ? full_path + 1 : volume_info->UNC + 1;
- rc = get_dfs_path(xid, pSesInfo , ref_path, cifs_sb->local_nls,
+ rc = get_dfs_path(xid, ses, ref_path, cifs_sb->local_nls,
&num_referrals, &referrals,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -3661,7 +3362,6 @@ expand_dfs_referral(int xid, struct cifs_ses *pSesInfo,
mdata = NULL;
} else {
cleanup_volume_info_contents(volume_info);
- memset(volume_info, '\0', sizeof(*volume_info));
rc = cifs_setup_volume_info(volume_info, mdata,
fake_devname);
}
@@ -3683,7 +3383,6 @@ cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data,
if (cifs_parse_mount_options(mount_data, devname, volume_info))
return -EINVAL;
-
if (volume_info->nullauth) {
cFYI(1, "Anonymous login");
kfree(volume_info->username);
@@ -3720,7 +3419,7 @@ cifs_get_volume_info(char *mount_data, const char *devname)
int rc;
struct smb_vol *volume_info;
- volume_info = kzalloc(sizeof(struct smb_vol), GFP_KERNEL);
+ volume_info = kmalloc(sizeof(struct smb_vol), GFP_KERNEL);
if (!volume_info)
return ERR_PTR(-ENOMEM);
@@ -3737,10 +3436,10 @@ int
cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *volume_info)
{
int rc;
- int xid;
- struct cifs_ses *pSesInfo;
+ unsigned int xid;
+ struct cifs_ses *ses;
struct cifs_tcon *tcon;
- struct TCP_Server_Info *srvTcp;
+ struct TCP_Server_Info *server;
char *full_path;
struct tcon_link *tlink;
#ifdef CONFIG_CIFS_DFS_UPCALL
@@ -3757,39 +3456,39 @@ try_mount_again:
if (referral_walks_count) {
if (tcon)
cifs_put_tcon(tcon);
- else if (pSesInfo)
- cifs_put_smb_ses(pSesInfo);
+ else if (ses)
+ cifs_put_smb_ses(ses);
- FreeXid(xid);
+ free_xid(xid);
}
#endif
rc = 0;
tcon = NULL;
- pSesInfo = NULL;
- srvTcp = NULL;
+ ses = NULL;
+ server = NULL;
full_path = NULL;
tlink = NULL;
- xid = GetXid();
+ xid = get_xid();
/* get a reference to a tcp session */
- srvTcp = cifs_get_tcp_session(volume_info);
- if (IS_ERR(srvTcp)) {
- rc = PTR_ERR(srvTcp);
+ server = cifs_get_tcp_session(volume_info);
+ if (IS_ERR(server)) {
+ rc = PTR_ERR(server);
bdi_destroy(&cifs_sb->bdi);
goto out;
}
/* get a reference to a SMB session */
- pSesInfo = cifs_get_smb_ses(srvTcp, volume_info);
- if (IS_ERR(pSesInfo)) {
- rc = PTR_ERR(pSesInfo);
- pSesInfo = NULL;
+ ses = cifs_get_smb_ses(server, volume_info);
+ if (IS_ERR(ses)) {
+ rc = PTR_ERR(ses);
+ ses = NULL;
goto mount_fail_check;
}
/* search for existing tcon to this server share */
- tcon = cifs_get_tcon(pSesInfo, volume_info);
+ tcon = cifs_get_tcon(ses, volume_info);
if (IS_ERR(tcon)) {
rc = PTR_ERR(tcon);
tcon = NULL;
@@ -3797,7 +3496,7 @@ try_mount_again:
}
/* tell server which Unix caps we support */
- if (tcon->ses->capabilities & CAP_UNIX) {
+ if (cap_unix(tcon->ses)) {
/* reset of caps checks mount to see if unix extensions
disabled for just this mount */
reset_cifs_unix_caps(xid, tcon, cifs_sb, volume_info);
@@ -3810,14 +3509,12 @@ try_mount_again:
} else
tcon->unix_ext = 0; /* server does not support them */
- /* do not care if following two calls succeed - informational */
- if (!tcon->ipc) {
- CIFSSMBQFSDeviceInfo(xid, tcon);
- CIFSSMBQFSAttributeInfo(xid, tcon);
- }
+ /* do not care if a following call succeed - informational */
+ if (!tcon->ipc && server->ops->qfs_tcon)
+ server->ops->qfs_tcon(xid, tcon);
- cifs_sb->wsize = cifs_negotiate_wsize(tcon, volume_info);
- cifs_sb->rsize = cifs_negotiate_rsize(tcon, volume_info);
+ cifs_sb->wsize = server->ops->negotiate_wsize(tcon, volume_info);
+ cifs_sb->rsize = server->ops->negotiate_rsize(tcon, volume_info);
/* tune readahead according to rsize */
cifs_sb->bdi.ra_pages = cifs_sb->rsize / PAGE_CACHE_SIZE;
@@ -3832,8 +3529,8 @@ remote_path_check:
* Chase the referral if found, otherwise continue normally.
*/
if (referral_walks_count == 0) {
- int refrc = expand_dfs_referral(xid, pSesInfo, volume_info,
- cifs_sb, false);
+ int refrc = expand_dfs_referral(xid, ses, volume_info, cifs_sb,
+ false);
if (!refrc) {
referral_walks_count++;
goto try_mount_again;
@@ -3843,13 +3540,20 @@ remote_path_check:
/* check if a whole path is not remote */
if (!rc && tcon) {
- /* build_path_to_root works only when we have a valid tcon */
+ if (!server->ops->is_path_accessible) {
+ rc = -ENOSYS;
+ goto mount_fail_check;
+ }
+ /*
+ * cifs_build_path_to_root works only when we have a valid tcon
+ */
full_path = cifs_build_path_to_root(volume_info, cifs_sb, tcon);
if (full_path == NULL) {
rc = -ENOMEM;
goto mount_fail_check;
}
- rc = is_path_accessible(xid, tcon, cifs_sb, full_path);
+ rc = server->ops->is_path_accessible(xid, tcon, cifs_sb,
+ full_path);
if (rc != 0 && rc != -EREMOTE) {
kfree(full_path);
goto mount_fail_check;
@@ -3871,8 +3575,7 @@ remote_path_check:
goto mount_fail_check;
}
- rc = expand_dfs_referral(xid, pSesInfo, volume_info, cifs_sb,
- true);
+ rc = expand_dfs_referral(xid, ses, volume_info, cifs_sb, true);
if (!rc) {
referral_walks_count++;
@@ -3894,7 +3597,7 @@ remote_path_check:
goto mount_fail_check;
}
- tlink->tl_uid = pSesInfo->linux_uid;
+ tlink->tl_uid = ses->linux_uid;
tlink->tl_tcon = tcon;
tlink->tl_time = jiffies;
set_bit(TCON_LINK_MASTER, &tlink->tl_flags);
@@ -3915,15 +3618,15 @@ mount_fail_check:
/* up accidentally freeing someone elses tcon struct */
if (tcon)
cifs_put_tcon(tcon);
- else if (pSesInfo)
- cifs_put_smb_ses(pSesInfo);
+ else if (ses)
+ cifs_put_smb_ses(ses);
else
- cifs_put_tcp_session(srvTcp);
+ cifs_put_tcp_session(server);
bdi_destroy(&cifs_sb->bdi);
}
out:
- FreeXid(xid);
+ free_xid(xid);
return rc;
}
@@ -3932,7 +3635,7 @@ out:
* pointer may be NULL.
*/
int
-CIFSTCon(unsigned int xid, struct cifs_ses *ses,
+CIFSTCon(const unsigned int xid, struct cifs_ses *ses,
const char *tree, struct cifs_tcon *tcon,
const struct nls_table *nls_codepage)
{
@@ -4116,24 +3819,22 @@ cifs_umount(struct cifs_sb_info *cifs_sb)
kfree(cifs_sb);
}
-int cifs_negotiate_protocol(unsigned int xid, struct cifs_ses *ses)
+int
+cifs_negotiate_protocol(const unsigned int xid, struct cifs_ses *ses)
{
int rc = 0;
struct TCP_Server_Info *server = ses->server;
+ if (!server->ops->need_neg || !server->ops->negotiate)
+ return -ENOSYS;
+
/* only send once per connect */
- if (server->maxBuf != 0)
+ if (!server->ops->need_neg(server))
return 0;
set_credits(server, 1);
- rc = CIFSSMBNegotiate(xid, ses);
- if (rc == -EAGAIN) {
- /* retry only once on 1st time connection */
- set_credits(server, 1);
- rc = CIFSSMBNegotiate(xid, ses);
- if (rc == -EAGAIN)
- rc = -EHOSTDOWN;
- }
+
+ rc = server->ops->negotiate(xid, ses);
if (rc == 0) {
spin_lock(&GlobalMid_Lock);
if (server->tcpStatus == CifsNeedNegotiate)
@@ -4141,28 +3842,29 @@ int cifs_negotiate_protocol(unsigned int xid, struct cifs_ses *ses)
else
rc = -EHOSTDOWN;
spin_unlock(&GlobalMid_Lock);
-
}
return rc;
}
-
-int cifs_setup_session(unsigned int xid, struct cifs_ses *ses,
- struct nls_table *nls_info)
+int
+cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
+ struct nls_table *nls_info)
{
- int rc = 0;
+ int rc = -ENOSYS;
struct TCP_Server_Info *server = ses->server;
ses->flags = 0;
ses->capabilities = server->capabilities;
if (linuxExtEnabled == 0)
- ses->capabilities &= (~CAP_UNIX);
+ ses->capabilities &= (~server->vals->cap_unix);
cFYI(1, "Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d",
server->sec_mode, server->capabilities, server->timeAdj);
- rc = CIFS_SessSetup(xid, ses, nls_info);
+ if (server->ops->sess_setup)
+ rc = server->ops->sess_setup(xid, ses, nls_info);
+
if (rc) {
cERROR(1, "Send error in SessSetup = %d", rc);
} else {
@@ -4262,7 +3964,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid)
goto out;
}
- if (ses->capabilities & CAP_UNIX)
+ if (cap_unix(ses))
reset_cifs_unix_caps(0, tcon, NULL, vol_info);
out:
kfree(vol_info->username);