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Diffstat (limited to 'fs/cifs/cifssmb.c')
-rw-r--r--fs/cifs/cifssmb.c102
1 files changed, 87 insertions, 15 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 075d8fb3d37..098790eb2aa 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -46,6 +46,7 @@ static struct {
} protocols[] = {
#ifdef CONFIG_CIFS_WEAK_PW_HASH
{LANMAN_PROT, "\2LM1.2X002"},
+ {LANMAN2_PROT, "\2LANMAN2.1"},
#endif /* weak password hashing for legacy clients */
{CIFS_PROT, "\2NT LM 0.12"},
{POSIX_PROT, "\2POSIX 2"},
@@ -58,6 +59,7 @@ static struct {
} protocols[] = {
#ifdef CONFIG_CIFS_WEAK_PW_HASH
{LANMAN_PROT, "\2LM1.2X002"},
+ {LANMAN2_PROT, "\2LANMAN2.1"},
#endif /* weak password hashing for legacy clients */
{CIFS_PROT, "\2NT LM 0.12"},
{BAD_PROT, "\2"}
@@ -67,13 +69,13 @@ static struct {
/* define the number of elements in the cifs dialect array */
#ifdef CONFIG_CIFS_POSIX
#ifdef CONFIG_CIFS_WEAK_PW_HASH
-#define CIFS_NUM_PROT 3
+#define CIFS_NUM_PROT 4
#else
#define CIFS_NUM_PROT 2
#endif /* CIFS_WEAK_PW_HASH */
#else /* not posix */
#ifdef CONFIG_CIFS_WEAK_PW_HASH
-#define CIFS_NUM_PROT 2
+#define CIFS_NUM_PROT 3
#else
#define CIFS_NUM_PROT 1
#endif /* CONFIG_CIFS_WEAK_PW_HASH */
@@ -397,6 +399,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
struct TCP_Server_Info * server;
u16 count;
unsigned int secFlags;
+ u16 dialect;
if(ses->server)
server = ses->server;
@@ -436,9 +439,10 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
if (rc != 0)
goto neg_err_exit;
- cFYI(1,("Dialect: %d", pSMBr->DialectIndex));
+ dialect = le16_to_cpu(pSMBr->DialectIndex);
+ cFYI(1,("Dialect: %d", dialect));
/* Check wct = 1 error case */
- if((pSMBr->hdr.WordCount < 13) || (pSMBr->DialectIndex == BAD_PROT)) {
+ if((pSMBr->hdr.WordCount < 13) || (dialect == BAD_PROT)) {
/* core returns wct = 1, but we do not ask for core - otherwise
small wct just comes when dialect index is -1 indicating we
could not negotiate a common dialect */
@@ -446,7 +450,9 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
goto neg_err_exit;
#ifdef CONFIG_CIFS_WEAK_PW_HASH
} else if((pSMBr->hdr.WordCount == 13)
- && (pSMBr->DialectIndex == LANMAN_PROT)) {
+ && ((dialect == LANMAN_PROT)
+ || (dialect == LANMAN2_PROT))) {
+ __s16 tmp;
struct lanman_neg_rsp * rsp = (struct lanman_neg_rsp *)pSMBr;
if((secFlags & CIFSSEC_MAY_LANMAN) ||
@@ -472,12 +478,44 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
server->maxRw = 0;/* we do not need to use raw anyway */
server->capabilities = CAP_MPX_MODE;
}
- server->timeZone = le16_to_cpu(rsp->ServerTimeZone);
+ tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone);
+ if (tmp == -1) {
+ /* OS/2 often does not set timezone therefore
+ * we must use server time to calc time zone.
+ * Could deviate slightly from the right zone.
+ * Smallest defined timezone difference is 15 minutes
+ * (i.e. Nepal). Rounding up/down is done to match
+ * this requirement.
+ */
+ int val, seconds, remain, result;
+ struct timespec ts, utc;
+ utc = CURRENT_TIME;
+ ts = cnvrtDosUnixTm(le16_to_cpu(rsp->SrvTime.Date),
+ le16_to_cpu(rsp->SrvTime.Time));
+ cFYI(1,("SrvTime: %d sec since 1970 (utc: %d) diff: %d",
+ (int)ts.tv_sec, (int)utc.tv_sec,
+ (int)(utc.tv_sec - ts.tv_sec)));
+ val = (int)(utc.tv_sec - ts.tv_sec);
+ seconds = val < 0 ? -val : val;
+ result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ;
+ remain = seconds % MIN_TZ_ADJ;
+ if(remain >= (MIN_TZ_ADJ / 2))
+ result += MIN_TZ_ADJ;
+ if(val < 0)
+ result = - result;
+ server->timeAdj = result;
+ } else {
+ server->timeAdj = (int)tmp;
+ server->timeAdj *= 60; /* also in seconds */
+ }
+ cFYI(1,("server->timeAdj: %d seconds", server->timeAdj));
+
/* BB get server time for time conversions and add
code to use it and timezone since this is not UTC */
- if (rsp->EncryptionKeyLength == cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) {
+ if (rsp->EncryptionKeyLength ==
+ cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) {
memcpy(server->cryptKey, rsp->EncryptionKey,
CIFS_CRYPTO_KEY_SIZE);
} else if (server->secMode & SECMODE_PW_ENCRYPT) {
@@ -531,7 +569,8 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
cFYI(0, ("Max buf = %d", ses->server->maxBuf));
GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
server->capabilities = le32_to_cpu(pSMBr->Capabilities);
- server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone);
+ server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone);
+ server->timeAdj *= 60;
if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
memcpy(server->cryptKey, pSMBr->u.EncryptionKey,
CIFS_CRYPTO_KEY_SIZE);
@@ -1617,7 +1656,7 @@ CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id)
pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */
pSMB->FileID = (__u16) smb_file_id;
- pSMB->LastWriteTime = 0;
+ pSMB->LastWriteTime = 0xFFFFFFFF;
pSMB->ByteCount = 0;
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
@@ -2773,9 +2812,11 @@ GetExtAttrOut:
/* security id for everyone */
-const struct cifs_sid sid_everyone = {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}};
+const static struct cifs_sid sid_everyone =
+ {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}};
/* group users */
-const struct cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}};
+const static struct cifs_sid sid_user =
+ {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}};
/* Convert CIFS ACL to POSIX form */
static int parse_sec_desc(struct cifs_sid * psec_desc, int acl_len)
@@ -2856,7 +2897,6 @@ qsec_out:
return rc;
}
-
/* Legacy Query Path Information call for lookup to old servers such
as Win9x/WinME */
int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
@@ -2898,7 +2938,16 @@ QInfRetry:
if (rc) {
cFYI(1, ("Send error in QueryInfo = %d", rc));
} else if (pFinfo) { /* decode response */
+ struct timespec ts;
+ __u32 time = le32_to_cpu(pSMBr->last_write_time);
+ /* BB FIXME - add time zone adjustment BB */
memset(pFinfo, 0, sizeof(FILE_ALL_INFO));
+ ts.tv_nsec = 0;
+ ts.tv_sec = time;
+ /* decode time fields */
+ pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts));
+ pFinfo->LastWriteTime = pFinfo->ChangeTime;
+ pFinfo->LastAccessTime = 0;
pFinfo->AllocationSize =
cpu_to_le64(le32_to_cpu(pSMBr->size));
pFinfo->EndOfFile = pFinfo->AllocationSize;
@@ -2922,6 +2971,7 @@ int
CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
const unsigned char *searchName,
FILE_ALL_INFO * pFindData,
+ int legacy /* old style infolevel */,
const struct nls_table *nls_codepage, int remap)
{
/* level 263 SMB_QUERY_FILE_ALL_INFO */
@@ -2970,7 +3020,10 @@ QPathInfoRetry:
byte_count = params + 1 /* pad */ ;
pSMB->TotalParameterCount = cpu_to_le16(params);
pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
+ if(legacy)
+ pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD);
+ else
+ pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
pSMB->Reserved4 = 0;
pSMB->hdr.smb_buf_length += byte_count;
pSMB->ByteCount = cpu_to_le16(byte_count);
@@ -2982,13 +3035,24 @@ QPathInfoRetry:
} else { /* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
- if (rc || (pSMBr->ByteCount < 40))
+ if (rc) /* BB add auto retry on EOPNOTSUPP? */
+ rc = -EIO;
+ else if (!legacy && (pSMBr->ByteCount < 40))
rc = -EIO; /* bad smb */
+ else if(legacy && (pSMBr->ByteCount < 24))
+ rc = -EIO; /* 24 or 26 expected but we do not read last field */
else if (pFindData){
+ int size;
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ if(legacy) /* we do not read the last field, EAsize, fortunately
+ since it varies by subdialect and on Set vs. Get, is
+ two bytes or 4 bytes depending but we don't care here */
+ size = sizeof(FILE_INFO_STANDARD);
+ else
+ size = sizeof(FILE_ALL_INFO);
memcpy((char *) pFindData,
(char *) &pSMBr->hdr.Protocol +
- data_offset, sizeof (FILE_ALL_INFO));
+ data_offset, size);
} else
rc = -ENOMEM;
}
@@ -3613,6 +3677,14 @@ getDFSRetry:
strncpy(pSMB->RequestFileName, searchName, name_len);
}
+ if(ses->server) {
+ if(ses->server->secMode &
+ (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
+ pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
+ }
+
+ pSMB->hdr.Uid = ses->Suid;
+
params = 2 /* level */ + name_len /*includes null */ ;
pSMB->TotalDataCount = 0;
pSMB->DataCount = 0;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-29 12:49:48 +0000