#include <linux/string.h>
#include <linux/list.h>
#include <linux/wait.h>
-#include <linux/ipv6.h>
#include <linux/pagemap.h>
#include <linux/ctype.h>
#include <linux/utsname.h>
#include <linux/freezer.h>
#include <asm/uaccess.h>
#include <asm/processor.h>
+#include <net/ipv6.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
bool local_lease:1; /* check leases only on local system, not remote */
bool noblocksnd:1;
bool noautotune:1;
+ bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
unsigned int rsize;
unsigned int wsize;
unsigned int sockopt;
/* null target name indicates to use *SMBSERVR default called name
if we end up sending RFC1001 session initialize */
vol->target_rfc1001_name[0] = 0;
- vol->linux_uid = current->uid; /* current->euid instead? */
- vol->linux_gid = current->gid;
+ vol->linux_uid = current_uid(); /* use current_euid() instead? */
+ vol->linux_gid = current_gid();
vol->dir_mode = S_IRWXUGO;
/* 2767 perms indicate mandatory locking support */
vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP);
vol->intr = 0;
} else if (strnicmp(data, "intr", 4) == 0) {
vol->intr = 1;
+ } else if (strnicmp(data, "nostrictsync", 12) == 0) {
+ vol->nostrictsync = 1;
+ } else if (strnicmp(data, "strictsync", 10) == 0) {
+ vol->nostrictsync = 0;
} else if (strnicmp(data, "serverino", 7) == 0) {
vol->server_ino = 1;
} else if (strnicmp(data, "noserverino", 9) == 0) {
}
static struct TCP_Server_Info *
-cifs_find_tcp_session(struct sockaddr *addr)
+cifs_find_tcp_session(struct sockaddr_storage *addr)
{
struct list_head *tmp;
struct TCP_Server_Info *server;
if (server->tcpStatus == CifsNew)
continue;
- if (addr->sa_family == AF_INET &&
+ if (addr->ss_family == AF_INET &&
(addr4->sin_addr.s_addr !=
server->addr.sockAddr.sin_addr.s_addr))
continue;
- else if (addr->sa_family == AF_INET6 &&
- memcmp(&server->addr.sockAddr6.sin6_addr,
- &addr6->sin6_addr, sizeof(addr6->sin6_addr)))
+ else if (addr->ss_family == AF_INET6 &&
+ !ipv6_addr_equal(&server->addr.sockAddr6.sin6_addr,
+ &addr6->sin6_addr))
continue;
++server->srv_count;
cifs_get_tcp_session(struct smb_vol *volume_info)
{
struct TCP_Server_Info *tcp_ses = NULL;
- struct sockaddr addr;
+ 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));
+ memset(&addr, 0, sizeof(struct sockaddr_storage));
if (volume_info->UNCip && volume_info->UNC) {
rc = cifs_inet_pton(AF_INET, volume_info->UNCip,
rc = cifs_inet_pton(AF_INET6, volume_info->UNCip,
&sin_server6->sin6_addr.in6_u);
if (rc > 0)
- addr.sa_family = AF_INET6;
+ addr.ss_family = AF_INET6;
} else {
- addr.sa_family = AF_INET;
+ addr.ss_family = AF_INET;
}
if (rc <= 0) {
tcp_ses->tcpStatus = CifsNew;
++tcp_ses->srv_count;
- if (addr.sa_family == AF_INET6) {
+ 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 */
* user space buffer
*/
socket->sk->sk_rcvtimeo = 7 * HZ;
- socket->sk->sk_sndtimeo = 3 * HZ;
+ socket->sk->sk_sndtimeo = 5 * HZ;
/* make the bufsizes depend on wsize/rsize and max requests */
if (server->noautotune) {
smb_buf = (struct smb_hdr *)ses_init_buf;
/* sizeof RFC1002_SESSION_REQUEST with no scope */
smb_buf->smb_buf_length = 0x81000044;
- rc = smb_send(socket, smb_buf, 0x44,
- (struct sockaddr *) &server->addr.sockAddr,
- server->noblocksnd);
+ 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
* user space buffer
*/
socket->sk->sk_rcvtimeo = 7 * HZ;
- socket->sk->sk_sndtimeo = 3 * HZ;
+ socket->sk->sk_sndtimeo = 5 * HZ;
server->ssocket = socket;
return rc;
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
if (pvolume_info->nobrl)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
+ if (pvolume_info->nostrictsync)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOSSYNC;
if (pvolume_info->mand_lock)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL;
if (pvolume_info->cifs_acl)
"mount option supported"));
}
+static int
+is_path_accessible(int xid, struct cifsTconInfo *tcon,
+ struct cifs_sb_info *cifs_sb, const char *full_path)
+{
+ int rc;
+ __u64 inode_num;
+ FILE_ALL_INFO *pfile_info;
+
+ rc = CIFSGetSrvInodeNumber(xid, tcon, full_path, &inode_num,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (rc != -EOPNOTSUPP)
+ return rc;
+
+ 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);
+ kfree(pfile_info);
+ return rc;
+}
+
+static void
+cleanup_volume_info(struct smb_vol **pvolume_info)
+{
+ struct smb_vol *volume_info;
+
+ if (!pvolume_info && !*pvolume_info)
+ return;
+
+ volume_info = *pvolume_info;
+ kzfree(volume_info->password);
+ kfree(volume_info->UNC);
+ kfree(volume_info->prepath);
+ kfree(volume_info);
+ *pvolume_info = NULL;
+ return;
+}
+
+#ifdef CONFIG_CIFS_DFS_UPCALL
+/* 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 *volume_info,
+ const struct cifs_sb_info *cifs_sb)
+{
+ char *full_path;
+
+ int unc_len = strnlen(volume_info->UNC, MAX_TREE_SIZE + 1);
+ full_path = kmalloc(unc_len + cifs_sb->prepathlen + 1, GFP_KERNEL);
+ if (full_path == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ strncpy(full_path, volume_info->UNC, unc_len);
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) {
+ int i;
+ for (i = 0; i < unc_len; i++) {
+ if (full_path[i] == '\\')
+ full_path[i] = '/';
+ }
+ }
+
+ if (cifs_sb->prepathlen)
+ strncpy(full_path + unc_len, cifs_sb->prepath,
+ cifs_sb->prepathlen);
+
+ full_path[unc_len + cifs_sb->prepathlen] = 0; /* add trailing null */
+ return full_path;
+}
+#endif
+
int
cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
- char *mount_data, const char *devname)
+ char *mount_data_global, const char *devname)
{
int rc = 0;
int xid;
struct cifsSesInfo *pSesInfo = NULL;
struct cifsTconInfo *tcon = NULL;
struct TCP_Server_Info *srvTcp = NULL;
+ char *full_path;
+ char *mount_data = mount_data_global;
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ struct dfs_info3_param *referrals = NULL;
+ unsigned int num_referrals = 0;
+try_mount_again:
+#endif
+ full_path = NULL;
xid = GetXid();
/* new SMB session uses our srvTcp ref */
pSesInfo->server = srvTcp;
if (srvTcp->addr.sockAddr6.sin6_family == AF_INET6)
- sprintf(pSesInfo->serverName, NIP6_FMT,
- NIP6(srvTcp->addr.sockAddr6.sin6_addr));
+ sprintf(pSesInfo->serverName, "%pI6",
+ &srvTcp->addr.sockAddr6.sin6_addr);
else
- sprintf(pSesInfo->serverName, NIPQUAD_FMT,
- NIPQUAD(srvTcp->addr.sockAddr.sin_addr.s_addr));
+ sprintf(pSesInfo->serverName, "%pI4",
+ &srvTcp->addr.sockAddr.sin_addr.s_addr);
write_lock(&cifs_tcp_ses_lock);
list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list);
/* volume_info->password freed at unmount */
if (volume_info->password) {
- pSesInfo->password = volume_info->password;
- /* set to NULL to prevent freeing on exit */
- volume_info->password = NULL;
+ pSesInfo->password = kstrdup(volume_info->password,
+ GFP_KERNEL);
+ if (!pSesInfo->password) {
+ rc = -ENOMEM;
+ goto mount_fail_check;
+ }
}
if (volume_info->username)
strncpy(pSesInfo->userName, volume_info->username,
rc = -ENOMEM;
goto mount_fail_check;
}
+
tcon->ses = pSesInfo;
+ if (volume_info->password) {
+ tcon->password = kstrdup(volume_info->password,
+ GFP_KERNEL);
+ if (!tcon->password) {
+ rc = -ENOMEM;
+ goto mount_fail_check;
+ }
+ }
- /* check for null share name ie connect to dfs root */
if ((strchr(volume_info->UNC + 3, '\\') == NULL)
&& (strchr(volume_info->UNC + 3, '/') == NULL)) {
- /* rc = connect_to_dfs_path(...) */
- cFYI(1, ("DFS root not supported"));
+ cERROR(1, ("Missing share name"));
rc = -ENODEV;
goto mount_fail_check;
} else {
}
}
if (rc)
- goto mount_fail_check;
+ goto remote_path_check;
tcon->seal = volume_info->seal;
write_lock(&cifs_tcp_ses_lock);
list_add(&tcon->tcon_list, &pSesInfo->tcon_list);
/* BB FIXME fix time_gran to be larger for LANMAN sessions */
sb->s_time_gran = 100;
-mount_fail_check:
- /* on error free sesinfo and tcon struct if needed */
- if (rc) {
- /* If find_unc succeeded then rc == 0 so we can not end */
- /* up accidently freeing someone elses tcon struct */
- if (tcon)
- cifs_put_tcon(tcon);
- else if (pSesInfo)
- cifs_put_smb_ses(pSesInfo);
- else
- cifs_put_tcp_session(srvTcp);
- goto out;
- }
+ if (rc)
+ goto remote_path_check;
+
cifs_sb->tcon = tcon;
/* do not care if following two calls succeed - informational */
cifs_sb->rsize = min(cifs_sb->rsize,
(tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE));
+remote_path_check:
+ /* check if a whole path (including prepath) is not remote */
+ if (!rc && cifs_sb->prepathlen && tcon) {
+ /* build_path_to_root works only when we have a valid tcon */
+ full_path = cifs_build_path_to_root(cifs_sb);
+ if (full_path == NULL) {
+ rc = -ENOMEM;
+ goto mount_fail_check;
+ }
+ rc = is_path_accessible(xid, tcon, cifs_sb, full_path);
+ if (rc != -EREMOTE) {
+ kfree(full_path);
+ goto mount_fail_check;
+ }
+ kfree(full_path);
+ }
+
+ /* get referral if needed */
+ if (rc == -EREMOTE) {
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ /* convert forward to back slashes in prepath here if needed */
+ if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0)
+ convert_delimiter(cifs_sb->prepath,
+ CIFS_DIR_SEP(cifs_sb));
+ full_path = build_unc_path_to_root(volume_info, cifs_sb);
+ if (IS_ERR(full_path)) {
+ rc = PTR_ERR(full_path);
+ goto mount_fail_check;
+ }
+
+ cFYI(1, ("Getting referral for: %s", full_path));
+ rc = get_dfs_path(xid, pSesInfo , full_path + 1,
+ cifs_sb->local_nls, &num_referrals, &referrals,
+ cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+ if (!rc && num_referrals > 0) {
+ char *fake_devname = NULL;
+
+ if (mount_data != mount_data_global)
+ kfree(mount_data);
+ mount_data = cifs_compose_mount_options(
+ cifs_sb->mountdata, full_path + 1,
+ referrals, &fake_devname);
+ kfree(fake_devname);
+ free_dfs_info_array(referrals, num_referrals);
+
+ if (tcon)
+ cifs_put_tcon(tcon);
+ else if (pSesInfo)
+ cifs_put_smb_ses(pSesInfo);
+
+ cleanup_volume_info(&volume_info);
+ FreeXid(xid);
+ kfree(full_path);
+ goto try_mount_again;
+ }
+#else /* No DFS support, return error on mount */
+ rc = -EOPNOTSUPP;
+#endif
+ }
+
+mount_fail_check:
+ /* on error free sesinfo and tcon struct if needed */
+ if (rc) {
+ if (mount_data != mount_data_global)
+ kfree(mount_data);
+ /* If find_unc succeeded then rc == 0 so we can not end */
+ /* up accidently freeing someone elses tcon struct */
+ if (tcon)
+ cifs_put_tcon(tcon);
+ else if (pSesInfo)
+ cifs_put_smb_ses(pSesInfo);
+ else
+ cifs_put_tcp_session(srvTcp);
+ goto out;
+ }
+
/* volume_info->password is freed above when existing session found
(in which case it is not needed anymore) but when new sesion is created
the password ptr is put in the new session structure (in which case the
password will be freed at unmount time) */
out:
/* zero out password before freeing */
- if (volume_info) {
- if (volume_info->password != NULL) {
- memset(volume_info->password, 0,
- strlen(volume_info->password));
- kfree(volume_info->password);
- }
- kfree(volume_info->UNC);
- kfree(volume_info->prepath);
- kfree(volume_info);
- }
+ cleanup_volume_info(&volume_info);
FreeXid(xid);
return rc;
}
/* We look for obvious messed up bcc or strings in response so we do not go off
the end since (at least) WIN2K and Windows XP have a major bug in not null
terminating last Unicode string in response */
- if (ses->serverOS)
- kfree(ses->serverOS);
+ kfree(ses->serverOS);
ses->serverOS = kzalloc(2 * (len + 1),
GFP_KERNEL);
if (ses->serverOS == NULL)
len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
/* last string is not always null terminated
(for e.g. for Windows XP & 2000) */
- if (ses->serverDomain)
- kfree(ses->serverDomain);
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2*(len+1),
GFP_KERNEL);
ses->serverDomain[1+(2*len)] = 0;
} else { /* else no more room so create
dummy domain string */
- if (ses->serverDomain)
- kfree(ses->serverDomain);
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2, GFP_KERNEL);
}
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
- if (ses->serverDomain)
- kfree(ses->serverDomain);
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(len + 1,
GFP_KERNEL);
if (ses->serverDomain == NULL)
/* We look for obvious messed up bcc or strings in response so we do not go off
the end since (at least) WIN2K and Windows XP have a major bug in not null
terminating last Unicode string in response */
- if (ses->serverOS)
- kfree(ses->serverOS);
+ kfree(ses->serverOS);
ses->serverOS =
kzalloc(2 * (len + 1), GFP_KERNEL);
cifs_strfromUCS_le(ses->serverOS,
if (((long) bcc_ptr + len) - (long)
pByteArea(smb_buffer_response)
<= BCC(smb_buffer_response)) {
- if (ses->serverOS)
- kfree(ses->serverOS);
+ kfree(ses->serverOS);
ses->serverOS =
kzalloc(len + 1,
GFP_KERNEL);
/* We look for obvious messed up bcc or strings in response so we do not go off
the end since (at least) WIN2K and Windows XP have a major bug in not null
terminating last Unicode string in response */
- if (ses->serverOS)
- kfree(ses->serverOS);
+ kfree(ses->serverOS);
ses->serverOS =
kzalloc(2 * (len + 1), GFP_KERNEL);
cifs_strfromUCS_le(ses->serverOS,
if (remaining_words > 0) {
len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
/* last string not always null terminated (e.g. for Windows XP & 2000) */
- if (ses->serverDomain)
- kfree(ses->serverDomain);
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2 *
(len +
= 0;
} /* else no more room so create dummy domain string */
else {
- if (ses->serverDomain)
- kfree(ses->serverDomain);
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(2,GFP_KERNEL);
}
} else { /* no room so create dummy domain and NOS string */
- if (ses->serverDomain)
- kfree(ses->serverDomain);
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(2, GFP_KERNEL);
kfree(ses->serverNOS);
ses->serverNOS = kzalloc(2, GFP_KERNEL);
if (((long) bcc_ptr + len) -
(long) pByteArea(smb_buffer_response)
<= BCC(smb_buffer_response)) {
- if (ses->serverOS)
- kfree(ses->serverOS);
+ kfree(ses->serverOS);
ses->serverOS = kzalloc(len + 1, GFP_KERNEL);
strncpy(ses->serverOS,bcc_ptr, len);
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
- if (ses->serverDomain)
- kfree(ses->serverDomain);
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(len+1,
GFP_KERNEL);
TCONX_RSP *pSMBr;
unsigned char *bcc_ptr;
int rc = 0;
- int length;
+ int length, bytes_left;
__u16 count;
if (ses == NULL)
NTLMv2 password here) */
#ifdef CONFIG_CIFS_WEAK_PW_HASH
if ((extended_security & CIFSSEC_MAY_LANMAN) &&
- (ses->server->secType == LANMAN))
- calc_lanman_hash(ses, bcc_ptr);
+ (ses->server->secType == LANMAN))
+ calc_lanman_hash(tcon->password, ses->server->cryptKey,
+ ses->server->secMode &
+ SECMODE_PW_ENCRYPT ? true : false,
+ bcc_ptr);
else
#endif /* CIFS_WEAK_PW_HASH */
- SMBNTencrypt(ses->password,
- ses->server->cryptKey,
+ SMBNTencrypt(tcon->password, ses->server->cryptKey,
bcc_ptr);
bcc_ptr += CIFS_SESS_KEY_SIZE;
rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length,
CIFS_STD_OP);
- /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */
/* above now done in SendReceive */
if ((rc == 0) && (tcon != NULL)) {
tcon->tidStatus = CifsGood;
tcon->need_reconnect = false;
tcon->tid = smb_buffer_response->Tid;
bcc_ptr = pByteArea(smb_buffer_response);
- length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2);
+ bytes_left = BCC(smb_buffer_response);
+ length = strnlen(bcc_ptr, bytes_left - 2);
+
/* skip service field (NB: this field is always ASCII) */
if (length == 3) {
if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') &&
}
}
bcc_ptr += length + 1;
+ bytes_left -= (length + 1);
strncpy(tcon->treeName, tree, MAX_TREE_SIZE);
- if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
- length = UniStrnlen((wchar_t *) bcc_ptr, 512);
- if ((bcc_ptr + (2 * length)) -
- pByteArea(smb_buffer_response) <=
- BCC(smb_buffer_response)) {
- kfree(tcon->nativeFileSystem);
- tcon->nativeFileSystem =
- kzalloc(length + 2, GFP_KERNEL);
- if (tcon->nativeFileSystem)
- cifs_strfromUCS_le(
- tcon->nativeFileSystem,
- (__le16 *) bcc_ptr,
- length, nls_codepage);
- bcc_ptr += 2 * length;
- bcc_ptr[0] = 0; /* null terminate the string */
- bcc_ptr[1] = 0;
- bcc_ptr += 2;
- }
- /* else do not bother copying these information fields*/
- } else {
- length = strnlen(bcc_ptr, 1024);
- if ((bcc_ptr + length) -
- pByteArea(smb_buffer_response) <=
- BCC(smb_buffer_response)) {
- kfree(tcon->nativeFileSystem);
- tcon->nativeFileSystem =
- kzalloc(length + 1, GFP_KERNEL);
- if (tcon->nativeFileSystem)
- strncpy(tcon->nativeFileSystem, bcc_ptr,
- length);
- }
- /* else do not bother copying these information fields*/
- }
+
+ /* mostly informational -- no need to fail on error here */
+ tcon->nativeFileSystem = cifs_strndup(bcc_ptr, bytes_left,
+ smb_buffer->Flags2 &
+ SMBFLG2_UNICODE,
+ nls_codepage);
+
+ cFYI(1, ("nativeFileSystem=%s", tcon->nativeFileSystem));
+
if ((smb_buffer_response->WordCount == 3) ||
(smb_buffer_response->WordCount == 7))
/* field is in same location */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff