/* Forward declarations */
static void cifs_readv_complete(struct work_struct *work);
+#ifdef CONFIG_HIGHMEM
+/*
+ * On arches that have high memory, kmap address space is limited. By
+ * serializing the kmap operations on those arches, we ensure that we don't
+ * end up with a bunch of threads in writeback with partially mapped page
+ * arrays, stuck waiting for kmap to come back. That situation prevents
+ * progress and can deadlock.
+ */
+static DEFINE_MUTEX(cifs_kmap_mutex);
+
+static inline void
+cifs_kmap_lock(void)
+{
+ mutex_lock(&cifs_kmap_mutex);
+}
+
+static inline void
+cifs_kmap_unlock(void)
+{
+ mutex_unlock(&cifs_kmap_mutex);
+}
+#else /* !CONFIG_HIGHMEM */
+#define cifs_kmap_lock() do { ; } while(0)
+#define cifs_kmap_unlock() do { ; } while(0)
+#endif /* CONFIG_HIGHMEM */
+
/* Mark as invalid, all open files on tree connections since they
were closed when session to server was lost */
static void mark_open_files_invalid(struct cifs_tcon *pTcon)
goto neg_err_exit;
}
server->sec_mode = (__u8)le16_to_cpu(rsp->SecurityMode);
- server->maxReq = le16_to_cpu(rsp->MaxMpxCount);
+ server->maxReq = min_t(unsigned int,
+ le16_to_cpu(rsp->MaxMpxCount),
+ cifs_max_pending);
+ server->oplocks = server->maxReq > 1 ? enable_oplocks : false;
server->maxBuf = le16_to_cpu(rsp->MaxBufSize);
server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs);
/* even though we do not use raw we might as well set this
/* one byte, so no need to convert this or EncryptionKeyLen from
little endian */
- server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount);
+ server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount),
+ cifs_max_pending);
+ server->oplocks = server->maxReq > 1 ? enable_oplocks : false;
/* probably no need to store and check maxvcs */
server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize);
server->max_rw = le32_to_cpu(pSMBr->MaxRawSize);
if (rc)
return rc;
+ if (server->capabilities & CAP_UNICODE)
+ smb->hdr.Flags2 |= SMBFLG2_UNICODE;
+
/* set up echo request */
smb->hdr.Tid = 0xffff;
smb->hdr.WordCount = 1;
eof_index = eof ? (eof - 1) >> PAGE_CACHE_SHIFT : 0;
cFYI(1, "eof=%llu eof_index=%lu", eof, eof_index);
+ cifs_kmap_lock();
list_for_each_entry_safe(page, tpage, &rdata->pages, lru) {
if (remaining >= PAGE_CACHE_SIZE) {
/* enough data to fill the page */
page_cache_release(page);
}
}
+ cifs_kmap_unlock();
/* issue the read if we have any iovecs left to fill */
if (rdata->nr_iov > 1) {
iov[0].iov_base = smb;
/* marshal up the pages into iov array */
+ cifs_kmap_lock();
wdata->bytes = 0;
for (i = 0; i < wdata->nr_pages; i++) {
iov[i + 1].iov_len = min(inode->i_size -
iov[i + 1].iov_base = kmap(wdata->pages[i]);
wdata->bytes += iov[i + 1].iov_len;
}
+ cifs_kmap_unlock();
cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes);
return 0;
}
cifs_acl->version = cpu_to_le16(1);
- if (acl_type == ACL_TYPE_ACCESS)
+ if (acl_type == ACL_TYPE_ACCESS) {
cifs_acl->access_entry_count = cpu_to_le16(count);
- else if (acl_type == ACL_TYPE_DEFAULT)
+ cifs_acl->default_entry_count = __constant_cpu_to_le16(0xFFFF);
+ } else if (acl_type == ACL_TYPE_DEFAULT) {
cifs_acl->default_entry_count = cpu_to_le16(count);
- else {
+ cifs_acl->access_entry_count = __constant_cpu_to_le16(0xFFFF);
+ } else {
cFYI(1, "unknown ACL type %d", acl_type);
return 0;
}
int rc = 0;
int bytes_returned = 0;
SET_SEC_DESC_REQ *pSMB = NULL;
- NTRANSACT_RSP *pSMBr = NULL;
+ void *pSMBr;
setCifsAclRetry:
- rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB,
- (void **) &pSMBr);
+ rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr);
if (rc)
- return (rc);
+ return rc;
pSMB->MaxSetupCount = 0;
pSMB->Reserved = 0;
pSMB->AclFlags = cpu_to_le32(aclflag);
if (pntsd && acllen) {
- memcpy((char *) &pSMBr->hdr.Protocol + data_offset,
- (char *) pntsd,
- acllen);
+ memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) +
+ data_offset, pntsd, acllen);
inc_rfc1001_len(pSMB, byte_count + data_count);
} else
inc_rfc1001_len(pSMB, byte_count);
CIFSFindFirst(const int xid, struct cifs_tcon *tcon,
const char *searchName,
const struct nls_table *nls_codepage,
- __u16 *pnetfid,
+ __u16 *pnetfid, __u16 search_flags,
struct cifs_search_info *psrch_inf, int remap, const char dirsep)
{
/* level 257 SMB_ */
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
ATTR_DIRECTORY);
pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO));
- pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END |
- CIFS_SEARCH_RETURN_RESUME);
+ pSMB->SearchFlags = cpu_to_le16(search_flags);
pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
/* BB what should we set StorageType to? Does it matter? BB */
return rc;
}
-int CIFSFindNext(const int xid, struct cifs_tcon *tcon,
- __u16 searchHandle, struct cifs_search_info *psrch_inf)
+int CIFSFindNext(const int xid, struct cifs_tcon *tcon, __u16 searchHandle,
+ __u16 search_flags, struct cifs_search_info *psrch_inf)
{
TRANSACTION2_FNEXT_REQ *pSMB = NULL;
TRANSACTION2_FNEXT_RSP *pSMBr = NULL;
cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO));
pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
pSMB->ResumeKey = psrch_inf->resume_key;
- pSMB->SearchFlags =
- cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME);
+ pSMB->SearchFlags = cpu_to_le16(search_flags);
name_len = psrch_inf->resume_name_len;
params += name_len;
max_len = data_end - temp;
node->node_name = cifs_strndup_from_ucs(temp, max_len,
is_unicode, nls_codepage);
- if (!node->node_name)
+ if (!node->node_name) {
rc = -ENOMEM;
+ goto parse_DFS_referrals_exit;
+ }
+
+ ref++;
}
parse_DFS_referrals_exit:
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
offset = param_offset + params;
- data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
+ data_offset = (char *)pSMB +
+ offsetof(struct smb_hdr, Protocol) + offset;
count = sizeof(FILE_BASIC_INFO);
pSMB->MaxParameterCount = cpu_to_le16(2);
u16 fid, u32 pid_of_opener)
{
struct smb_com_transaction2_sfi_req *pSMB = NULL;
- FILE_UNIX_BASIC_INFO *data_offset;
+ char *data_offset;
int rc = 0;
u16 params, param_offset, offset, byte_count, count;
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
offset = param_offset + params;
- data_offset = (FILE_UNIX_BASIC_INFO *)
- ((char *)(&pSMB->hdr.Protocol) + offset);
+ data_offset = (char *)pSMB +
+ offsetof(struct smb_hdr, Protocol) + offset;
+
count = sizeof(FILE_UNIX_BASIC_INFO);
pSMB->MaxParameterCount = cpu_to_le16(2);
inc_rfc1001_len(pSMB, byte_count);
pSMB->ByteCount = cpu_to_le16(byte_count);
- cifs_fill_unix_set_info(data_offset, args);
+ cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args);
rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0);
if (rc)
git.openpandora.org / pandora-kernel.git / blobdiff