summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--fs/cifs/CHANGES7
-rw-r--r--fs/cifs/cifsfs.h2
-rw-r--r--fs/cifs/cifsproto.h2
-rw-r--r--fs/cifs/cifssmb.c40
-rw-r--r--fs/cifs/connect.c97
-rw-r--r--fs/cifs/file.c12
6 files changed, 140 insertions, 20 deletions
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 1a27ecb..7271bb0 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,3 +1,10 @@
+Version 1.43
+------------
+POSIX locking to servers which support CIFS POSIX Extensions
+(disabled by default controlled by proc/fs/cifs/Experimental).
+Handle conversion of long share names (especially Asian languages)
+to Unicode during mount.
+
Version 1.42
------------
Fix slow oplock break when mounted to different servers at the same time and
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 4e829dc..c98755d 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -99,5 +99,5 @@ extern ssize_t cifs_getxattr(struct dentry *, const char *, void *, size_t);
extern ssize_t cifs_listxattr(struct dentry *, char *, size_t);
extern int cifs_ioctl (struct inode * inode, struct file * filep,
unsigned int command, unsigned long arg);
-#define CIFS_VERSION "1.42"
+#define CIFS_VERSION "1.43"
#endif /* _CIFSFS_H */
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 2879ba3..310ea2f 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -267,7 +267,7 @@ extern int CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
const int waitFlag);
extern int CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
const __u16 smb_file_id, const int get_flag,
- const __u64 len, const __u64 offset,
+ const __u64 len, struct file_lock *,
const __u16 lock_type, const int waitFlag);
extern int CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon);
extern int CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses);
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index fd36892..925881e 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1355,7 +1355,8 @@ CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
int
CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
const __u16 smb_file_id, const int get_flag, const __u64 len,
- const __u64 lkoffset, const __u16 lock_type, const int waitFlag)
+ struct file_lock *pLockData, const __u16 lock_type,
+ const int waitFlag)
{
struct smb_com_transaction2_sfi_req *pSMB = NULL;
struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
@@ -1366,6 +1367,10 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
__u16 params, param_offset, offset, byte_count, count;
cFYI(1, ("Posix Lock"));
+
+ if(pLockData == NULL)
+ return EINVAL;
+
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
if (rc)
@@ -1404,10 +1409,10 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
parm_data->lock_type = cpu_to_le16(lock_type);
if(waitFlag)
- parm_data->lock_flags = 1;
+ parm_data->lock_flags = cpu_to_le16(1);
parm_data->pid = cpu_to_le32(current->tgid);
- parm_data->start = lkoffset;
- parm_data->length = len; /* normalize negative numbers */
+ parm_data->start = cpu_to_le64(pLockData->fl_start);
+ parm_data->length = cpu_to_le64(len); /* normalize negative numbers */
pSMB->DataOffset = cpu_to_le16(offset);
pSMB->Fid = smb_file_id;
@@ -1419,8 +1424,33 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
cFYI(1, ("Send error in Posix Lock = %d", rc));
- }
+ } else if (get_flag) {
+ /* lock structure can be returned on get */
+ __u16 data_offset;
+ __u16 data_count;
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+ if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) {
+ rc = -EIO; /* bad smb */
+ goto plk_err_exit;
+ }
+ if(pLockData == NULL) {
+ rc = -EINVAL;
+ goto plk_err_exit;
+ }
+ data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ data_count = le16_to_cpu(pSMBr->t2.DataCount);
+ if(data_count < sizeof(struct cifs_posix_lock)) {
+ rc = -EIO;
+ goto plk_err_exit;
+ }
+ parm_data = (struct cifs_posix_lock *)
+ ((char *)&pSMBr->hdr.Protocol + data_offset);
+ if(parm_data->lock_type == cpu_to_le16(CIFS_UNLCK))
+ pLockData->fl_type = F_UNLCK;
+ }
+
+plk_err_exit:
if (pSMB)
cifs_small_buf_release(pSMB);
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index d2ec806..bae1479 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -2148,6 +2148,8 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
/* 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);
ses->serverOS = kzalloc(2 * (len + 1), GFP_KERNEL);
if(ses->serverOS == NULL)
goto sesssetup_nomem;
@@ -2160,6 +2162,8 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if (remaining_words > 0) {
len = UniStrnlen((wchar_t *)bcc_ptr,
remaining_words-1);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(2 * (len + 1),GFP_KERNEL);
if(ses->serverNOS == NULL)
goto sesssetup_nomem;
@@ -2177,6 +2181,8 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if (remaining_words > 0) {
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);
ses->serverDomain =
kzalloc(2*(len+1),GFP_KERNEL);
if(ses->serverDomain == NULL)
@@ -2187,15 +2193,22 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
ses->serverDomain[2*len] = 0;
ses->serverDomain[1+(2*len)] = 0;
} /* else no more room so create dummy domain string */
- else
+ else {
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2, GFP_KERNEL);
+ }
} else { /* no room so create dummy domain and NOS string */
/* if these kcallocs fail not much we
can do, but better to not fail the
sesssetup itself */
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2, GFP_KERNEL);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS =
kzalloc(2, GFP_KERNEL);
}
@@ -2204,6 +2217,8 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if (((long) bcc_ptr + len) - (long)
pByteArea(smb_buffer_response)
<= BCC(smb_buffer_response)) {
+ if(ses->serverOS)
+ kfree(ses->serverOS);
ses->serverOS = kzalloc(len + 1,GFP_KERNEL);
if(ses->serverOS == NULL)
goto sesssetup_nomem;
@@ -2214,6 +2229,8 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(len + 1,GFP_KERNEL);
if(ses->serverNOS == NULL)
goto sesssetup_nomem;
@@ -2223,6 +2240,8 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(len + 1,GFP_KERNEL);
if(ses->serverDomain == NULL)
goto sesssetup_nomem;
@@ -2427,6 +2446,8 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
/* 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);
ses->serverOS =
kzalloc(2 * (len + 1), GFP_KERNEL);
cifs_strfromUCS_le(ses->serverOS,
@@ -2441,6 +2462,8 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
len = UniStrnlen((wchar_t *)bcc_ptr,
remaining_words
- 1);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS =
kzalloc(2 * (len + 1),
GFP_KERNEL);
@@ -2454,7 +2477,9 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
remaining_words -= len + 1;
if (remaining_words > 0) {
len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
- /* last string is not always null terminated (for e.g. for Windows XP & 2000) */
+ /* last string not null terminated (e.g.Windows XP/2000) */
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(2*(len+1),GFP_KERNEL);
cifs_strfromUCS_le(ses->serverDomain,
(__le16 *)bcc_ptr,
@@ -2463,11 +2488,18 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
ses->serverDomain[2*len] = 0;
ses->serverDomain[1+(2*len)] = 0;
} /* else no more room so create dummy domain string */
- else
+ else {
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(2,GFP_KERNEL);
- } else { /* no room so create dummy domain and NOS string */
+ }
+ } else {/* no room use dummy domain&NOS */
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(2, GFP_KERNEL);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(2, GFP_KERNEL);
}
} else { /* ASCII */
@@ -2476,6 +2508,8 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if (((long) bcc_ptr + len) - (long)
pByteArea(smb_buffer_response)
<= BCC(smb_buffer_response)) {
+ if(ses->serverOS)
+ kfree(ses->serverOS);
ses->serverOS = kzalloc(len + 1, GFP_KERNEL);
strncpy(ses->serverOS, bcc_ptr, len);
@@ -2484,6 +2518,8 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(len + 1,GFP_KERNEL);
strncpy(ses->serverNOS, bcc_ptr, len);
bcc_ptr += len;
@@ -2491,6 +2527,8 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(len + 1, GFP_KERNEL);
strncpy(ses->serverDomain, bcc_ptr, len);
bcc_ptr += len;
@@ -2728,6 +2766,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
/* 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);
ses->serverOS =
kzalloc(2 * (len + 1), GFP_KERNEL);
cifs_strfromUCS_le(ses->serverOS,
@@ -2743,6 +2783,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
bcc_ptr,
remaining_words
- 1);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS =
kzalloc(2 * (len + 1),
GFP_KERNEL);
@@ -2760,6 +2802,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
if (remaining_words > 0) {
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);
ses->serverDomain =
kzalloc(2 *
(len +
@@ -2777,13 +2821,20 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
[1 + (2 * len)]
= 0;
} /* else no more room so create dummy domain string */
- else
+ else {
+ if(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);
ses->serverDomain =
kzalloc(2, GFP_KERNEL);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS =
kzalloc(2, GFP_KERNEL);
}
@@ -2792,6 +2843,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
if (((long) bcc_ptr + len) - (long)
pByteArea(smb_buffer_response)
<= BCC(smb_buffer_response)) {
+ if(ses->serverOS)
+ kfree(ses->serverOS);
ses->serverOS =
kzalloc(len + 1,
GFP_KERNEL);
@@ -2803,6 +2856,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS =
kzalloc(len + 1,
GFP_KERNEL);
@@ -2812,6 +2867,8 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain =
kzalloc(len + 1,
GFP_KERNEL);
@@ -3116,6 +3173,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
/* 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);
ses->serverOS =
kzalloc(2 * (len + 1), GFP_KERNEL);
cifs_strfromUCS_le(ses->serverOS,
@@ -3131,6 +3190,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr,
remaining_words
- 1);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS =
kzalloc(2 * (len + 1),
GFP_KERNEL);
@@ -3147,6 +3208,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
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);
ses->serverDomain =
kzalloc(2 *
(len +
@@ -3172,10 +3235,17 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
len)]
= 0;
} /* else no more room so create dummy domain string */
- else
+ else {
+ if(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);
ses->serverDomain = kzalloc(2, GFP_KERNEL);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(2, GFP_KERNEL);
}
} else { /* ASCII */
@@ -3183,6 +3253,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if (((long) bcc_ptr + len) -
(long) pByteArea(smb_buffer_response)
<= BCC(smb_buffer_response)) {
+ if(ses->serverOS)
+ kfree(ses->serverOS);
ses->serverOS = kzalloc(len + 1,GFP_KERNEL);
strncpy(ses->serverOS,bcc_ptr, len);
@@ -3191,6 +3263,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverNOS)
+ kfree(ses->serverNOS);
ses->serverNOS = kzalloc(len+1,GFP_KERNEL);
strncpy(ses->serverNOS, bcc_ptr, len);
bcc_ptr += len;
@@ -3198,6 +3272,8 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
len = strnlen(bcc_ptr, 1024);
+ if(ses->serverDomain)
+ kfree(ses->serverDomain);
ses->serverDomain = kzalloc(len+1,GFP_KERNEL);
strncpy(ses->serverDomain, bcc_ptr, len);
bcc_ptr += len;
@@ -3282,7 +3358,8 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++; /* align */
}
- if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
+ if(ses->server->secMode &
+ (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
if (ses->capabilities & CAP_STATUS32) {
@@ -3294,8 +3371,10 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
if (ses->capabilities & CAP_UNICODE) {
smb_buffer->Flags2 |= SMBFLG2_UNICODE;
length =
- cifs_strtoUCS((__le16 *) bcc_ptr, tree, 100, nls_codepage);
- bcc_ptr += 2 * length; /* convert num of 16 bit words to bytes */
+ cifs_strtoUCS((__le16 *) bcc_ptr, tree,
+ 6 /* max utf8 char length in bytes */ *
+ (/* server len*/ + 256 /* share len */), nls_codepage);
+ bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */
bcc_ptr += 2; /* skip trailing null */
} else { /* ASCII */
strcpy(bcc_ptr, tree);
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index e152bf6..e2b4ce1 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -84,6 +84,8 @@ static inline int cifs_get_disposition(unsigned int flags)
return FILE_OVERWRITE_IF;
else if ((flags & O_CREAT) == O_CREAT)
return FILE_OPEN_IF;
+ else if ((flags & O_TRUNC) == O_TRUNC)
+ return FILE_OVERWRITE;
else
return FILE_OPEN;
}
@@ -656,7 +658,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
else
posix_lock_type = CIFS_WRLCK;
rc = CIFSSMBPosixLock(xid, pTcon, netfid, 1 /* get */,
- length, pfLock->fl_start,
+ length, pfLock,
posix_lock_type, wait_flag);
FreeXid(xid);
return rc;
@@ -704,7 +706,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
return -EOPNOTSUPP;
}
rc = CIFSSMBPosixLock(xid, pTcon, netfid, 0 /* set */,
- length, pfLock->fl_start,
+ length, pfLock,
posix_lock_type, wait_flag);
} else
rc = CIFSSMBLock(xid, pTcon, netfid, length, pfLock->fl_start,
@@ -904,8 +906,10 @@ static ssize_t cifs_write(struct file *file, const char *write_data,
if (rc != 0)
break;
}
- if(experimEnabled || (pTcon->ses->server->secMode &
- (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) == 0) {
+ if(experimEnabled || (pTcon->ses->server &&
+ ((pTcon->ses->server->secMode &
+ (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
+ == 0))) {
struct kvec iov[2];
unsigned int len;
OpenPOWER on IntegriCloud