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[CIFS] Handle legacy servers which return undefined time zone

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Signed-off-by: Guenter Kukkukk <linux@kukkukk.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French 2006-09-30 00:54:23 +00:00
parent bf97d28711
commit 25ee4a98c6
1 changed files with 27 additions and 1 deletions
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28
fs/cifs/cifssmb.c
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@ -447,6 +447,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
#ifdef CONFIG_CIFS_WEAK_PW_HASH
} else if((pSMBr->hdr.WordCount == 13)
&& (pSMBr->DialectIndex == LANMAN_PROT)) {
int tmp, adjust;
struct lanman_neg_rsp * rsp = (struct lanman_neg_rsp *)pSMBr;
if((secFlags & CIFSSEC_MAY_LANMAN) ||
@ -473,11 +474,36 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
server->capabilities = CAP_MPX_MODE;
}
server->timeZone = le16_to_cpu(rsp->ServerTimeZone);
tmp = le16_to_cpu(rsp->ServerTimeZone);
if (tmp == (int)0xffff) {
/* OS/2 often does not set timezone therefore
* we must use server time to calc time zone.
* Could deviate slightly from the right zone. Not easy
* to adjust, since timezones are not always a multiple
* of 60 (sometimes 30 minutes - are there smaller?)
*/
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)));
tmp = (int)(utc.tv_sec - ts.tv_sec);
adjust = tmp < 0 ? -29 : 29;
tmp = ((tmp + adjust) / 60) * 60;
server->timeZone = tmp;
} else {
server->timeZone = tmp * 60; /* also in seconds */
}
cFYI(1,("server->timeZone: %d seconds", server->timeZone));
/* 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) {