ccflags-y += -I$(src) # needed for trace events
obj-$(CONFIG_CIFS) += cifs.o
-cifs-y := trace.o cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o \
+cifs-y := trace.o cifsfs.o cifs_debug.o connect.o dir.o file.o \
inode.o link.o misc.o netmisc.o smbencrypt.o transport.o \
cifs_unicode.o nterr.o cifsencrypt.o \
readdir.o ioctl.o sess.o export.o unc.o winucase.o \
cifs-$(CONFIG_CIFS_ROOT) += cifsroot.o
-cifs-$(CONFIG_CIFS_ALLOW_INSECURE_LEGACY) += smb1ops.o
+cifs-$(CONFIG_CIFS_ALLOW_INSECURE_LEGACY) += smb1ops.o cifssmb.o
return rc;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb,
const struct cifs_fid *cifsfid, u32 *pacllen,
u32 __maybe_unused unused)
cifs_put_tlink(tlink);
return rc;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
/* Translate the CIFS ACL (similar to NTFS ACL) for a file into mode bits */
int
extern int generate_smb311signingkey(struct cifs_ses *ses,
struct TCP_Server_Info *server);
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
extern int CIFSSMBCopy(unsigned int xid,
struct cifs_tcon *source_tcon,
const char *fromName,
const struct nls_table *nls_codepage, int remap_special_chars);
extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
const int netfid, __u64 *pExtAttrBits, __u64 *pMask);
+#endif /* CIFS_ALLOW_INSECURE_LEGACY */
extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb);
extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr);
extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
#include "cifsproto.h"
#include "cifs_unicode.h"
#include "cifs_debug.h"
-#include "smb2proto.h"
#include "fscache.h"
#include "smbdirect.h"
#ifdef CONFIG_CIFS_DFS_UPCALL
#define CIFS_NUM_PROT 1
#endif /* CIFS_POSIX */
-/*
- * Mark as invalid, all open files on tree connections since they
- * were closed when session to server was lost.
- */
-void
-cifs_mark_open_files_invalid(struct cifs_tcon *tcon)
-{
- struct cifsFileInfo *open_file = NULL;
- struct list_head *tmp;
- struct list_head *tmp1;
-
- /* only send once per connect */
- spin_lock(&tcon->ses->ses_lock);
- if ((tcon->ses->ses_status != SES_GOOD) || (tcon->status != TID_NEED_RECON)) {
- spin_unlock(&tcon->ses->ses_lock);
- return;
- }
- tcon->status = TID_IN_FILES_INVALIDATE;
- spin_unlock(&tcon->ses->ses_lock);
-
- /* list all files open on tree connection and mark them invalid */
- spin_lock(&tcon->open_file_lock);
- list_for_each_safe(tmp, tmp1, &tcon->openFileList) {
- open_file = list_entry(tmp, struct cifsFileInfo, tlist);
- open_file->invalidHandle = true;
- open_file->oplock_break_cancelled = true;
- }
- spin_unlock(&tcon->open_file_lock);
-
- mutex_lock(&tcon->crfid.fid_mutex);
- tcon->crfid.is_valid = false;
- /* cached handle is not valid, so SMB2_CLOSE won't be sent below */
- close_cached_dir_lease_locked(&tcon->crfid);
- memset(tcon->crfid.fid, 0, sizeof(struct cifs_fid));
- mutex_unlock(&tcon->crfid.fid_mutex);
-
- spin_lock(&tcon->tc_lock);
- if (tcon->status == TID_IN_FILES_INVALIDATE)
- tcon->status = TID_NEED_TCON;
- spin_unlock(&tcon->tc_lock);
-
- /*
- * BB Add call to invalidate_inodes(sb) for all superblocks mounted
- * to this tcon.
- */
-}
/* reconnect the socket, tcon, and smb session if needed */
static int
return 0;
}
-int
-cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required)
-{
- bool srv_sign_required = server->sec_mode & server->vals->signing_required;
- bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled;
- bool mnt_sign_enabled;
-
- /*
- * Is signing required by mnt options? If not then check
- * global_secflags to see if it is there.
- */
- if (!mnt_sign_required)
- mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) ==
- CIFSSEC_MUST_SIGN);
-
- /*
- * If signing is required then it's automatically enabled too,
- * otherwise, check to see if the secflags allow it.
- */
- mnt_sign_enabled = mnt_sign_required ? mnt_sign_required :
- (global_secflags & CIFSSEC_MAY_SIGN);
-
- /* If server requires signing, does client allow it? */
- if (srv_sign_required) {
- if (!mnt_sign_enabled) {
- cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!\n");
- return -ENOTSUPP;
- }
- server->sign = true;
- }
-
- /* If client requires signing, does server allow it? */
- if (mnt_sign_required) {
- if (!srv_sign_enabled) {
- cifs_dbg(VFS, "Server does not support signing!\n");
- return -ENOTSUPP;
- }
- server->sign = true;
- }
-
- if (cifs_rdma_enabled(server) && server->sign)
- cifs_dbg(VFS, "Signing is enabled, and RDMA read/write will be disabled\n");
-
- return 0;
-}
-
static bool
should_set_ext_sec_flag(enum securityEnum sectype)
{
return rc;
}
-/*
- * Discard any remaining data in the current SMB. To do this, we borrow the
- * current bigbuf.
- */
-int
-cifs_discard_remaining_data(struct TCP_Server_Info *server)
-{
- unsigned int rfclen = server->pdu_size;
- int remaining = rfclen + server->vals->header_preamble_size -
- server->total_read;
-
- while (remaining > 0) {
- int length;
-
- length = cifs_discard_from_socket(server,
- min_t(size_t, remaining,
- CIFSMaxBufSize + MAX_HEADER_SIZE(server)));
- if (length < 0)
- return length;
- server->total_read += length;
- remaining -= length;
- }
-
- return 0;
-}
-
-static int
-__cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid,
- bool malformed)
-{
- int length;
-
- length = cifs_discard_remaining_data(server);
- dequeue_mid(mid, malformed);
- mid->resp_buf = server->smallbuf;
- server->smallbuf = NULL;
- return length;
-}
-
-static int
-cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
-{
- struct cifs_readdata *rdata = mid->callback_data;
-
- return __cifs_readv_discard(server, mid, rdata->result);
-}
-
-int
-cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
-{
- int length, len;
- unsigned int data_offset, data_len;
- struct cifs_readdata *rdata = mid->callback_data;
- char *buf = server->smallbuf;
- unsigned int buflen = server->pdu_size +
- server->vals->header_preamble_size;
- bool use_rdma_mr = false;
-
- cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n",
- __func__, mid->mid, rdata->offset, rdata->bytes);
-
- /*
- * read the rest of READ_RSP header (sans Data array), or whatever we
- * can if there's not enough data. At this point, we've read down to
- * the Mid.
- */
- len = min_t(unsigned int, buflen, server->vals->read_rsp_size) -
- HEADER_SIZE(server) + 1;
-
- length = cifs_read_from_socket(server,
- buf + HEADER_SIZE(server) - 1, len);
- if (length < 0)
- return length;
- server->total_read += length;
-
- if (server->ops->is_session_expired &&
- server->ops->is_session_expired(buf)) {
- cifs_reconnect(server, true);
- return -1;
- }
-
- if (server->ops->is_status_pending &&
- server->ops->is_status_pending(buf, server)) {
- cifs_discard_remaining_data(server);
- return -1;
- }
-
- /* set up first two iov for signature check and to get credits */
- rdata->iov[0].iov_base = buf;
- rdata->iov[0].iov_len = server->vals->header_preamble_size;
- rdata->iov[1].iov_base = buf + server->vals->header_preamble_size;
- rdata->iov[1].iov_len =
- server->total_read - server->vals->header_preamble_size;
- cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
- rdata->iov[0].iov_base, rdata->iov[0].iov_len);
- cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
- rdata->iov[1].iov_base, rdata->iov[1].iov_len);
-
- /* Was the SMB read successful? */
- rdata->result = server->ops->map_error(buf, false);
- if (rdata->result != 0) {
- cifs_dbg(FYI, "%s: server returned error %d\n",
- __func__, rdata->result);
- /* normal error on read response */
- return __cifs_readv_discard(server, mid, false);
- }
-
- /* Is there enough to get to the rest of the READ_RSP header? */
- if (server->total_read < server->vals->read_rsp_size) {
- cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n",
- __func__, server->total_read,
- server->vals->read_rsp_size);
- rdata->result = -EIO;
- return cifs_readv_discard(server, mid);
- }
-
- data_offset = server->ops->read_data_offset(buf) +
- server->vals->header_preamble_size;
- if (data_offset < server->total_read) {
- /*
- * win2k8 sometimes sends an offset of 0 when the read
- * is beyond the EOF. Treat it as if the data starts just after
- * the header.
- */
- cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
- __func__, data_offset);
- data_offset = server->total_read;
- } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
- /* data_offset is beyond the end of smallbuf */
- cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
- __func__, data_offset);
- rdata->result = -EIO;
- return cifs_readv_discard(server, mid);
- }
-
- cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n",
- __func__, server->total_read, data_offset);
-
- len = data_offset - server->total_read;
- if (len > 0) {
- /* read any junk before data into the rest of smallbuf */
- length = cifs_read_from_socket(server,
- buf + server->total_read, len);
- if (length < 0)
- return length;
- server->total_read += length;
- }
-
- /* how much data is in the response? */
-#ifdef CONFIG_CIFS_SMB_DIRECT
- use_rdma_mr = rdata->mr;
-#endif
- data_len = server->ops->read_data_length(buf, use_rdma_mr);
- if (!use_rdma_mr && (data_offset + data_len > buflen)) {
- /* data_len is corrupt -- discard frame */
- rdata->result = -EIO;
- return cifs_readv_discard(server, mid);
- }
-
- length = rdata->read_into_pages(server, rdata, data_len);
- if (length < 0)
- return length;
-
- server->total_read += length;
-
- cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n",
- server->total_read, buflen, data_len);
-
- /* discard anything left over */
- if (server->total_read < buflen)
- return cifs_readv_discard(server, mid);
-
- dequeue_mid(mid, false);
- mid->resp_buf = server->smallbuf;
- server->smallbuf = NULL;
- return length;
-}
-
static void
cifs_readv_callback(struct mid_q_entry *mid)
{
return rc;
}
-void
-cifs_writedata_release(struct kref *refcount)
-{
- struct cifs_writedata *wdata = container_of(refcount,
- struct cifs_writedata, refcount);
-#ifdef CONFIG_CIFS_SMB_DIRECT
- if (wdata->mr) {
- smbd_deregister_mr(wdata->mr);
- wdata->mr = NULL;
- }
-#endif
-
- if (wdata->cfile)
- cifsFileInfo_put(wdata->cfile);
-
- kvfree(wdata->pages);
- kfree(wdata);
-}
-
-/*
- * Write failed with a retryable error. Resend the write request. It's also
- * possible that the page was redirtied so re-clean the page.
- */
-static void
-cifs_writev_requeue(struct cifs_writedata *wdata)
-{
- int i, rc = 0;
- struct inode *inode = d_inode(wdata->cfile->dentry);
- struct TCP_Server_Info *server;
- unsigned int rest_len;
-
- server = tlink_tcon(wdata->cfile->tlink)->ses->server;
- i = 0;
- rest_len = wdata->bytes;
- do {
- struct cifs_writedata *wdata2;
- unsigned int j, nr_pages, wsize, tailsz, cur_len;
-
- wsize = server->ops->wp_retry_size(inode);
- if (wsize < rest_len) {
- nr_pages = wsize / PAGE_SIZE;
- if (!nr_pages) {
- rc = -ENOTSUPP;
- break;
- }
- cur_len = nr_pages * PAGE_SIZE;
- tailsz = PAGE_SIZE;
- } else {
- nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE);
- cur_len = rest_len;
- tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE;
- }
-
- wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete);
- if (!wdata2) {
- rc = -ENOMEM;
- break;
- }
-
- for (j = 0; j < nr_pages; j++) {
- wdata2->pages[j] = wdata->pages[i + j];
- lock_page(wdata2->pages[j]);
- clear_page_dirty_for_io(wdata2->pages[j]);
- }
-
- wdata2->sync_mode = wdata->sync_mode;
- wdata2->nr_pages = nr_pages;
- wdata2->offset = page_offset(wdata2->pages[0]);
- wdata2->pagesz = PAGE_SIZE;
- wdata2->tailsz = tailsz;
- wdata2->bytes = cur_len;
-
- rc = cifs_get_writable_file(CIFS_I(inode), FIND_WR_ANY,
- &wdata2->cfile);
- if (!wdata2->cfile) {
- cifs_dbg(VFS, "No writable handle to retry writepages rc=%d\n",
- rc);
- if (!is_retryable_error(rc))
- rc = -EBADF;
- } else {
- wdata2->pid = wdata2->cfile->pid;
- rc = server->ops->async_writev(wdata2,
- cifs_writedata_release);
- }
-
- for (j = 0; j < nr_pages; j++) {
- unlock_page(wdata2->pages[j]);
- if (rc != 0 && !is_retryable_error(rc)) {
- SetPageError(wdata2->pages[j]);
- end_page_writeback(wdata2->pages[j]);
- put_page(wdata2->pages[j]);
- }
- }
-
- kref_put(&wdata2->refcount, cifs_writedata_release);
- if (rc) {
- if (is_retryable_error(rc))
- continue;
- i += nr_pages;
- break;
- }
-
- rest_len -= cur_len;
- i += nr_pages;
- } while (i < wdata->nr_pages);
-
- /* cleanup remaining pages from the original wdata */
- for (; i < wdata->nr_pages; i++) {
- SetPageError(wdata->pages[i]);
- end_page_writeback(wdata->pages[i]);
- put_page(wdata->pages[i]);
- }
-
- if (rc != 0 && !is_retryable_error(rc))
- mapping_set_error(inode->i_mapping, rc);
- kref_put(&wdata->refcount, cifs_writedata_release);
-}
-
-void
-cifs_writev_complete(struct work_struct *work)
-{
- struct cifs_writedata *wdata = container_of(work,
- struct cifs_writedata, work);
- struct inode *inode = d_inode(wdata->cfile->dentry);
- int i = 0;
-
- if (wdata->result == 0) {
- spin_lock(&inode->i_lock);
- cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes);
- spin_unlock(&inode->i_lock);
- cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink),
- wdata->bytes);
- } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN)
- return cifs_writev_requeue(wdata);
-
- for (i = 0; i < wdata->nr_pages; i++) {
- struct page *page = wdata->pages[i];
- if (wdata->result == -EAGAIN)
- __set_page_dirty_nobuffers(page);
- else if (wdata->result < 0)
- SetPageError(page);
- end_page_writeback(page);
- cifs_readpage_to_fscache(inode, page);
- put_page(page);
- }
- if (wdata->result != -EAGAIN)
- mapping_set_error(inode->i_mapping, wdata->result);
- kref_put(&wdata->refcount, cifs_writedata_release);
-}
-
-struct cifs_writedata *
-cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete)
-{
- struct page **pages =
- kcalloc(nr_pages, sizeof(struct page *), GFP_NOFS);
- if (pages)
- return cifs_writedata_direct_alloc(pages, complete);
-
- return NULL;
-}
-
-struct cifs_writedata *
-cifs_writedata_direct_alloc(struct page **pages, work_func_t complete)
-{
- struct cifs_writedata *wdata;
-
- wdata = kzalloc(sizeof(*wdata), GFP_NOFS);
- if (wdata != NULL) {
- wdata->pages = pages;
- kref_init(&wdata->refcount);
- INIT_LIST_HEAD(&wdata->list);
- init_completion(&wdata->done);
- INIT_WORK(&wdata->work, complete);
- }
- return wdata;
-}
-
/*
* Check the mid_state and signature on received buffer (if any), and queue the
* workqueue completion task.
return rc;
}
-/* BB fix tabs in this function FIXME BB */
int
CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
const int netfid, __u64 *pExtAttrBits, __u64 *pMask)
GetExtAttrRetry:
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
+ (void **) &pSMBr);
if (rc)
return rc;
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
__u16 count = le16_to_cpu(pSMBr->t2.DataCount);
struct file_chattr_info *pfinfo;
- /* BB Do we need a cast or hash here ? */
+
if (count != 16) {
cifs_dbg(FYI, "Invalid size ret in GetExtAttr\n");
rc = -EIO;
dequeue_mid(mid, malformed);
}
+int
+cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required)
+{
+ bool srv_sign_required = server->sec_mode & server->vals->signing_required;
+ bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled;
+ bool mnt_sign_enabled;
+
+ /*
+ * Is signing required by mnt options? If not then check
+ * global_secflags to see if it is there.
+ */
+ if (!mnt_sign_required)
+ mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) ==
+ CIFSSEC_MUST_SIGN);
+
+ /*
+ * If signing is required then it's automatically enabled too,
+ * otherwise, check to see if the secflags allow it.
+ */
+ mnt_sign_enabled = mnt_sign_required ? mnt_sign_required :
+ (global_secflags & CIFSSEC_MAY_SIGN);
+
+ /* If server requires signing, does client allow it? */
+ if (srv_sign_required) {
+ if (!mnt_sign_enabled) {
+ cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!\n");
+ return -EOPNOTSUPP;
+ }
+ server->sign = true;
+ }
+
+ /* If client requires signing, does server allow it? */
+ if (mnt_sign_required) {
+ if (!srv_sign_enabled) {
+ cifs_dbg(VFS, "Server does not support signing!\n");
+ return -EOPNOTSUPP;
+ }
+ server->sign = true;
+ }
+
+ if (cifs_rdma_enabled(server) && server->sign)
+ cifs_dbg(VFS, "Signing is enabled, and RDMA read/write will be disabled\n");
+
+ return 0;
+}
+
+
static void clean_demultiplex_info(struct TCP_Server_Info *server)
{
int length;
return generic_ip_connect(server);
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx)
{
}
}
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb)
{
if (tcon->posix_extensions)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_POSIX_PATHS;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
/* tell server which Unix caps we support */
if (cap_unix(tcon->ses)) {
/*
}
spin_unlock(&tcon->ses->server->srv_lock);
} else
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
tcon->unix_ext = 0; /* server does not support them */
/* do not care if a following call succeed - informational */
goto out;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (cap_unix(ses))
reset_cifs_unix_caps(0, tcon, NULL, ctx);
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
out:
kfree(ctx->username);
return PTR_ERR(full_path);
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (tcon->unix_ext && cap_unix(tcon->ses) && !tcon->broken_posix_open &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
* rare for path not covered on files)
*/
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
desired_access = 0;
if (OPEN_FMODE(oflags) & FMODE_READ)
goto out;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
/*
* If Open reported that we actually created a file then we now have to
* set the mode if possible.
rc = cifs_get_inode_info_unix(&newinode, full_path, inode->i_sb,
xid);
else {
+#else
+ {
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
/* TODO: Add support for calling POSIX query info here, but passing in fid */
rc = cifs_get_inode_info(&newinode, full_path, buf, inode->i_sb,
xid, fid);
}
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
cifs_create_set_dentry:
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
if (rc != 0) {
cifs_dbg(FYI, "Create worked, get_inode_info failed rc = %d\n",
rc);
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
+#include "smb2proto.h"
#include "cifs_unicode.h"
#include "cifs_debug.h"
#include "cifs_fs_sb.h"
#include "fs_context.h"
#include "cifs_ioctl.h"
+/*
+ * Mark as invalid, all open files on tree connections since they
+ * were closed when session to server was lost.
+ */
+void
+cifs_mark_open_files_invalid(struct cifs_tcon *tcon)
+{
+ struct cifsFileInfo *open_file = NULL;
+ struct list_head *tmp;
+ struct list_head *tmp1;
+
+ /* only send once per connect */
+ spin_lock(&tcon->ses->ses_lock);
+ if ((tcon->ses->ses_status != SES_GOOD) || (tcon->status != TID_NEED_RECON)) {
+ spin_unlock(&tcon->ses->ses_lock);
+ return;
+ }
+ tcon->status = TID_IN_FILES_INVALIDATE;
+ spin_unlock(&tcon->ses->ses_lock);
+
+ /* list all files open on tree connection and mark them invalid */
+ spin_lock(&tcon->open_file_lock);
+ list_for_each_safe(tmp, tmp1, &tcon->openFileList) {
+ open_file = list_entry(tmp, struct cifsFileInfo, tlist);
+ open_file->invalidHandle = true;
+ open_file->oplock_break_cancelled = true;
+ }
+ spin_unlock(&tcon->open_file_lock);
+
+ mutex_lock(&tcon->crfid.fid_mutex);
+ tcon->crfid.is_valid = false;
+ /* cached handle is not valid, so SMB2_CLOSE won't be sent below */
+ close_cached_dir_lease_locked(&tcon->crfid);
+ memset(tcon->crfid.fid, 0, sizeof(struct cifs_fid));
+ mutex_unlock(&tcon->crfid.fid_mutex);
+
+ spin_lock(&tcon->tc_lock);
+ if (tcon->status == TID_IN_FILES_INVALIDATE)
+ tcon->status = TID_NEED_TCON;
+ spin_unlock(&tcon->tc_lock);
+
+ /*
+ * BB Add call to invalidate_inodes(sb) for all superblocks mounted
+ * to this tcon.
+ */
+}
+
static inline int cifs_convert_flags(unsigned int flags)
{
if ((flags & O_ACCMODE) == O_RDONLY)
FILE_READ_DATA);
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
static u32 cifs_posix_convert_flags(unsigned int flags)
{
u32 posix_flags = 0;
return posix_flags;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
static inline int cifs_get_disposition(unsigned int flags)
{
return FILE_OPEN;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
int cifs_posix_open(const char *full_path, struct inode **pinode,
struct super_block *sb, int mode, unsigned int f_flags,
__u32 *poplock, __u16 *pnetfid, unsigned int xid)
kfree(presp_data);
return rc;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
static int
cifs_nt_open(const char *full_path, struct inode *inode, struct cifs_sb_info *cifs_sb,
else
oplock = 0;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (!tcon->broken_posix_open && tcon->unix_ext &&
cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
* or DFS errors.
*/
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
if (server->ops->get_lease_key)
server->ops->get_lease_key(inode, &fid);
goto out;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if ((oplock & CIFS_CREATE_ACTION) && !posix_open_ok && tcon->unix_ext) {
/*
* Time to set mode which we can not set earlier due to
CIFSSMBUnixSetFileInfo(xid, tcon, &args, fid.netfid,
cfile->pid);
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
use_cache:
fscache_use_cookie(cifs_inode_cookie(file_inode(file)),
return rc;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
static int cifs_push_posix_locks(struct cifsFileInfo *cfile);
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
/*
* Try to reacquire byte range locks that were released when session
static int
cifs_relock_file(struct cifsFileInfo *cfile)
{
- struct cifs_sb_info *cifs_sb = CIFS_SB(cfile->dentry->d_sb);
struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
int rc = 0;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
+ struct cifs_sb_info *cifs_sb = CIFS_SB(cfile->dentry->d_sb);
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
down_read_nested(&cinode->lock_sem, SINGLE_DEPTH_NESTING);
if (cinode->can_cache_brlcks) {
return rc;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (cap_unix(tcon->ses) &&
(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability)) &&
((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0))
rc = cifs_push_posix_locks(cfile);
else
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
rc = tcon->ses->server->ops->push_mand_locks(cfile);
up_read(&cinode->lock_sem);
else
oplock = 0;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (tcon->unix_ext && cap_unix(tcon->ses) &&
(CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
* in the reconnect path it is important to retry hard
*/
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
desired_access = cifs_convert_flags(cfile->f_flags);
goto reopen_error_exit;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
reopen_success:
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
cfile->invalidHandle = false;
mutex_unlock(&cfile->fh_mutex);
cinode = CIFS_I(inode);
return rc;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
/*
* Check if there is another lock that prevents us to set the lock (posix
* style). If such a lock exists, update the flock structure with its
{
return cifs_lock_secret ^ hash32_ptr((const void *)owner);
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
struct lock_to_push {
struct list_head llist;
__u8 type;
};
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
static int
cifs_push_posix_locks(struct cifsFileInfo *cfile)
{
}
goto out;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
static int
cifs_push_locks(struct cifsFileInfo *cfile)
{
- struct cifs_sb_info *cifs_sb = CIFS_SB(cfile->dentry->d_sb);
struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
int rc = 0;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
+ struct cifs_sb_info *cifs_sb = CIFS_SB(cfile->dentry->d_sb);
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
/* we are going to update can_cache_brlcks here - need a write access */
cifs_down_write(&cinode->lock_sem);
return rc;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (cap_unix(tcon->ses) &&
(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability)) &&
((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0))
rc = cifs_push_posix_locks(cfile);
else
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
rc = tcon->ses->server->ops->push_mand_locks(cfile);
cinode->can_cache_brlcks = false;
struct cifsFileInfo *cfile = (struct cifsFileInfo *)file->private_data;
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
struct TCP_Server_Info *server = tcon->ses->server;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
__u16 netfid = cfile->fid.netfid;
if (posix_lck) {
posix_lock_type, wait_flag);
return rc;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
rc = cifs_lock_test(cfile, flock->fl_start, length, type, flock);
if (!rc)
}
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
int
cifs_unlock_range(struct cifsFileInfo *cfile, struct file_lock *flock,
unsigned int xid)
kfree(buf);
return rc;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
static int
cifs_setlk(struct file *file, struct file_lock *flock, __u32 type,
struct TCP_Server_Info *server = tcon->ses->server;
struct inode *inode = d_inode(cfile->dentry);
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (posix_lck) {
int posix_lock_type;
NULL, posix_lock_type, wait_flag);
goto out;
}
-
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
if (lock) {
struct cifsLockInfo *lock;
return -ENOENT;
}
+void
+cifs_writedata_release(struct kref *refcount)
+{
+ struct cifs_writedata *wdata = container_of(refcount,
+ struct cifs_writedata, refcount);
+#ifdef CONFIG_CIFS_SMB_DIRECT
+ if (wdata->mr) {
+ smbd_deregister_mr(wdata->mr);
+ wdata->mr = NULL;
+ }
+#endif
+
+ if (wdata->cfile)
+ cifsFileInfo_put(wdata->cfile);
+
+ kvfree(wdata->pages);
+ kfree(wdata);
+}
+
+/*
+ * Write failed with a retryable error. Resend the write request. It's also
+ * possible that the page was redirtied so re-clean the page.
+ */
+static void
+cifs_writev_requeue(struct cifs_writedata *wdata)
+{
+ int i, rc = 0;
+ struct inode *inode = d_inode(wdata->cfile->dentry);
+ struct TCP_Server_Info *server;
+ unsigned int rest_len;
+
+ server = tlink_tcon(wdata->cfile->tlink)->ses->server;
+ i = 0;
+ rest_len = wdata->bytes;
+ do {
+ struct cifs_writedata *wdata2;
+ unsigned int j, nr_pages, wsize, tailsz, cur_len;
+
+ wsize = server->ops->wp_retry_size(inode);
+ if (wsize < rest_len) {
+ nr_pages = wsize / PAGE_SIZE;
+ if (!nr_pages) {
+ rc = -EOPNOTSUPP;
+ break;
+ }
+ cur_len = nr_pages * PAGE_SIZE;
+ tailsz = PAGE_SIZE;
+ } else {
+ nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE);
+ cur_len = rest_len;
+ tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE;
+ }
+
+ wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete);
+ if (!wdata2) {
+ rc = -ENOMEM;
+ break;
+ }
+
+ for (j = 0; j < nr_pages; j++) {
+ wdata2->pages[j] = wdata->pages[i + j];
+ lock_page(wdata2->pages[j]);
+ clear_page_dirty_for_io(wdata2->pages[j]);
+ }
+
+ wdata2->sync_mode = wdata->sync_mode;
+ wdata2->nr_pages = nr_pages;
+ wdata2->offset = page_offset(wdata2->pages[0]);
+ wdata2->pagesz = PAGE_SIZE;
+ wdata2->tailsz = tailsz;
+ wdata2->bytes = cur_len;
+
+ rc = cifs_get_writable_file(CIFS_I(inode), FIND_WR_ANY,
+ &wdata2->cfile);
+ if (!wdata2->cfile) {
+ cifs_dbg(VFS, "No writable handle to retry writepages rc=%d\n",
+ rc);
+ if (!is_retryable_error(rc))
+ rc = -EBADF;
+ } else {
+ wdata2->pid = wdata2->cfile->pid;
+ rc = server->ops->async_writev(wdata2,
+ cifs_writedata_release);
+ }
+
+ for (j = 0; j < nr_pages; j++) {
+ unlock_page(wdata2->pages[j]);
+ if (rc != 0 && !is_retryable_error(rc)) {
+ SetPageError(wdata2->pages[j]);
+ end_page_writeback(wdata2->pages[j]);
+ put_page(wdata2->pages[j]);
+ }
+ }
+
+ kref_put(&wdata2->refcount, cifs_writedata_release);
+ if (rc) {
+ if (is_retryable_error(rc))
+ continue;
+ i += nr_pages;
+ break;
+ }
+
+ rest_len -= cur_len;
+ i += nr_pages;
+ } while (i < wdata->nr_pages);
+
+ /* cleanup remaining pages from the original wdata */
+ for (; i < wdata->nr_pages; i++) {
+ SetPageError(wdata->pages[i]);
+ end_page_writeback(wdata->pages[i]);
+ put_page(wdata->pages[i]);
+ }
+
+ if (rc != 0 && !is_retryable_error(rc))
+ mapping_set_error(inode->i_mapping, rc);
+ kref_put(&wdata->refcount, cifs_writedata_release);
+}
+
+void
+cifs_writev_complete(struct work_struct *work)
+{
+ struct cifs_writedata *wdata = container_of(work,
+ struct cifs_writedata, work);
+ struct inode *inode = d_inode(wdata->cfile->dentry);
+ int i = 0;
+
+ if (wdata->result == 0) {
+ spin_lock(&inode->i_lock);
+ cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes);
+ spin_unlock(&inode->i_lock);
+ cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink),
+ wdata->bytes);
+ } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN)
+ return cifs_writev_requeue(wdata);
+
+ for (i = 0; i < wdata->nr_pages; i++) {
+ struct page *page = wdata->pages[i];
+
+ if (wdata->result == -EAGAIN)
+ __set_page_dirty_nobuffers(page);
+ else if (wdata->result < 0)
+ SetPageError(page);
+ end_page_writeback(page);
+ cifs_readpage_to_fscache(inode, page);
+ put_page(page);
+ }
+ if (wdata->result != -EAGAIN)
+ mapping_set_error(inode->i_mapping, wdata->result);
+ kref_put(&wdata->refcount, cifs_writedata_release);
+}
+
+struct cifs_writedata *
+cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete)
+{
+ struct page **pages =
+ kcalloc(nr_pages, sizeof(struct page *), GFP_NOFS);
+ if (pages)
+ return cifs_writedata_direct_alloc(pages, complete);
+
+ return NULL;
+}
+
+struct cifs_writedata *
+cifs_writedata_direct_alloc(struct page **pages, work_func_t complete)
+{
+ struct cifs_writedata *wdata;
+
+ wdata = kzalloc(sizeof(*wdata), GFP_NOFS);
+ if (wdata != NULL) {
+ wdata->pages = pages;
+ kref_init(&wdata->refcount);
+ INIT_LIST_HEAD(&wdata->list);
+ init_completion(&wdata->done);
+ INIT_WORK(&wdata->work, complete);
+ }
+ return wdata;
+}
+
+
static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to)
{
struct address_space *mapping = page->mapping;
fattr->cf_flags = CIFS_FATTR_DFS_REFERRAL;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
static int
cifs_get_file_info_unix(struct file *filp)
{
cgiiu_exit:
return rc;
}
+#else
+int cifs_get_inode_info_unix(struct inode **pinode,
+ const unsigned char *full_path,
+ struct super_block *sb, unsigned int xid)
+{
+ return -EOPNOTSUPP;
+}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
static int
cifs_sfu_type(struct cifs_fattr *fattr, const char *path,
return hash;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
/**
* cifs_backup_query_path_info - SMB1 fallback code to get ino
*
*data = (FILE_ALL_INFO *)info.srch_entries_start;
return 0;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
static void
cifs_set_fattr_ino(int xid,
rc = 0;
break;
case -EACCES:
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
/*
* perm errors, try again with backup flags if possible
*
/* nothing we can do, bail out */
goto out;
}
+#else
+ goto out;
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
break;
default:
cifs_dbg(FYI, "%s: unhandled err rc %d\n", __func__, rc);
/*
* 4. Tweak fattr based on mount options
*/
-
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
handle_mnt_opt:
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
/* query for SFU type info if supported and needed */
if (fattr.cf_cifsattrs & ATTR_SYSTEM &&
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
return server->ops->set_file_info(inode, full_path, &info_buf, xid);
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
/*
* Open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
* and rename it to a random name that hopefully won't conflict with
goto out_close;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
/* copied from fs/nfs/dir.c with small changes */
static void
}
cifs_close_deferred_file_under_dentry(tcon, full_path);
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
rc = CIFSPOSIXDelFile(xid, tcon, full_path,
if ((rc == 0) || (rc == -ENOENT))
goto psx_del_no_retry;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
retry_std_delete:
if (!server->ops->unlink) {
if (tcon->posix_extensions)
rc = smb311_posix_get_inode_info(&inode, full_path, parent->i_sb, xid);
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
else if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, parent->i_sb,
xid);
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
else
rc = cifs_get_inode_info(&inode, full_path, NULL, parent->i_sb,
xid, NULL);
if (parent->i_mode & S_ISGID)
mode |= S_ISGID;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (tcon->unix_ext) {
struct cifs_unix_set_info_args args = {
.mode = mode,
cifs_sb->local_nls,
cifs_remap(cifs_sb));
} else {
+#else
+ {
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
struct TCP_Server_Info *server = tcon->ses->server;
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
(mode & S_IWUGO) == 0 && server->ops->mkdir_setinfo)
return 0;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
static int
cifs_posix_mkdir(struct inode *inode, struct dentry *dentry, umode_t mode,
const char *full_path, struct cifs_sb_info *cifs_sb,
xid);
goto posix_mkdir_out;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
int cifs_mkdir(struct user_namespace *mnt_userns, struct inode *inode,
struct dentry *direntry, umode_t mode)
goto mkdir_out;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
le64_to_cpu(tcon->fsUnixInfo.Capability))) {
rc = cifs_posix_mkdir(inode, direntry, mode, full_path, cifs_sb,
if (rc != -EOPNOTSUPP)
goto mkdir_out;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
if (!server->ops->mkdir) {
rc = -ENOSYS;
struct tcon_link *tlink;
struct cifs_tcon *tcon;
struct TCP_Server_Info *server;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
struct cifs_fid fid;
struct cifs_open_parms oparms;
- int oplock, rc;
+ int oplock;
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
+ int rc;
tlink = cifs_sb_tlink(cifs_sb);
if (IS_ERR(tlink))
if (server->vals->protocol_id != 0)
goto do_rename_exit;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
/* open-file renames don't work across directories */
if (to_dentry->d_parent != from_dentry->d_parent)
goto do_rename_exit;
cifs_sb->local_nls, cifs_remap(cifs_sb));
CIFSSMBClose(xid, tcon, fid.netfid);
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
do_rename_exit:
if (rc == 0)
d_move(from_dentry, to_dentry);
struct cifs_sb_info *cifs_sb;
struct tcon_link *tlink;
struct cifs_tcon *tcon;
- FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
- FILE_UNIX_BASIC_INFO *info_buf_target;
unsigned int xid;
int rc, tmprc;
int retry_count = 0;
+ FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
+ FILE_UNIX_BASIC_INFO *info_buf_target;
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
if (flags & ~RENAME_NOREPLACE)
return -EINVAL;
if (flags & RENAME_NOREPLACE)
goto cifs_rename_exit;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (rc == -EEXIST && tcon->unix_ext) {
/*
* Are src and dst hardlinks of same inode? We can only tell
*/
unlink_target:
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
+
/* Try unlinking the target dentry if it's not negative */
if (d_really_is_positive(target_dentry) && (rc == -EACCES || rc == -EEXIST)) {
if (d_is_dir(target_dentry))
{
int rc = 0;
struct dentry *dentry = file_dentry(filp);
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
if (!cifs_dentry_needs_reval(dentry))
return rc;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (tlink_tcon(cfile->tlink)->unix_ext)
rc = cifs_get_file_info_unix(filp);
else
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
rc = cifs_get_file_info(filp);
return rc;
return rc;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
static int
cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
{
free_xid(xid);
return rc;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
static int
cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
struct iattr *attrs)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
- struct cifs_tcon *pTcon = cifs_sb_master_tcon(cifs_sb);
int rc, retries = 0;
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
+ struct cifs_tcon *pTcon = cifs_sb_master_tcon(cifs_sb);
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
if (unlikely(cifs_forced_shutdown(cifs_sb)))
return -EIO;
do {
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (pTcon->unix_ext)
rc = cifs_setattr_unix(direntry, attrs);
else
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
rc = cifs_setattr_nounix(direntry, attrs);
retries++;
} while (is_retryable_error(rc) && retries < 2);
tcon = tlink_tcon(pSMBFile->tlink);
caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
#ifdef CONFIG_CIFS_POSIX
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (CIFS_UNIX_EXTATTR_CAP & caps) {
__u64 ExtAttrMask = 0;
rc = CIFSGetExtAttr(xid, tcon,
if (rc != EOPNOTSUPP)
break;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
#endif /* CONFIG_CIFS_POSIX */
rc = 0;
if (CIFS_I(inode)->cifsAttrs & ATTR_COMPRESSED) {
return rc;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
/*
* SMB 1.0 Protocol specific functions
*/
CIFSSMBClose(xid, tcon, fid.netfid);
return rc;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
/*
* SMB 2.1/SMB3 Protocol specific functions
goto cifs_hl_exit;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
if (tcon->unix_ext)
rc = CIFSUnixCreateHardLink(xid, tcon, from_name, to_name,
cifs_sb->local_nls,
cifs_remap(cifs_sb));
else {
+#else
+ {
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
server = tcon->ses->server;
if (!server->ops->create_hardlink) {
rc = -ENOSYS;
/* BB what if DFS and this volume is on different share? BB */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
rc = create_mf_symlink(xid, pTcon, cifs_sb, full_path, symname);
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
else if (pTcon->unix_ext)
rc = CIFSUnixCreateSymLink(xid, pTcon, full_path, symname,
cifs_sb->local_nls,
cifs_remap(cifs_sb));
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
/* else
rc = CIFSCreateReparseSymLink(xid, pTcon, fromName, toName,
cifs_sb_target->local_nls); */
return rc;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
static __u32 cifs_ssetup_hdr(struct cifs_ses *ses,
struct TCP_Server_Info *server,
SESSION_SETUP_ANDX *pSMB)
*pbcc_area = bcc_ptr;
}
-
static void unicode_ssetup_strings(char **pbcc_area, struct cifs_ses *ses,
const struct nls_table *nls_cp)
{
for it later, but it is not very important */
cifs_dbg(FYI, "ascii: bytes left %d\n", bleft);
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len,
struct cifs_ses *ses)
struct kvec iov[3];
};
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
static int
sess_alloc_buffer(struct sess_data *sess_data, int wct)
{
kfree(sess_data);
return rc;
}
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
#include <asm/processor.h>
#include <linux/mempool.h>
#include <linux/sched/signal.h>
+#include <linux/task_io_accounting_ops.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
return -ERESTARTSYS;
return rc;
}
+
+/*
+ * Discard any remaining data in the current SMB. To do this, we borrow the
+ * current bigbuf.
+ */
+int
+cifs_discard_remaining_data(struct TCP_Server_Info *server)
+{
+ unsigned int rfclen = server->pdu_size;
+ int remaining = rfclen + server->vals->header_preamble_size -
+ server->total_read;
+
+ while (remaining > 0) {
+ int length;
+
+ length = cifs_discard_from_socket(server,
+ min_t(size_t, remaining,
+ CIFSMaxBufSize + MAX_HEADER_SIZE(server)));
+ if (length < 0)
+ return length;
+ server->total_read += length;
+ remaining -= length;
+ }
+
+ return 0;
+}
+
+static int
+__cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid,
+ bool malformed)
+{
+ int length;
+
+ length = cifs_discard_remaining_data(server);
+ dequeue_mid(mid, malformed);
+ mid->resp_buf = server->smallbuf;
+ server->smallbuf = NULL;
+ return length;
+}
+
+static int
+cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
+{
+ struct cifs_readdata *rdata = mid->callback_data;
+
+ return __cifs_readv_discard(server, mid, rdata->result);
+}
+
+int
+cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
+{
+ int length, len;
+ unsigned int data_offset, data_len;
+ struct cifs_readdata *rdata = mid->callback_data;
+ char *buf = server->smallbuf;
+ unsigned int buflen = server->pdu_size +
+ server->vals->header_preamble_size;
+ bool use_rdma_mr = false;
+
+ cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n",
+ __func__, mid->mid, rdata->offset, rdata->bytes);
+
+ /*
+ * read the rest of READ_RSP header (sans Data array), or whatever we
+ * can if there's not enough data. At this point, we've read down to
+ * the Mid.
+ */
+ len = min_t(unsigned int, buflen, server->vals->read_rsp_size) -
+ HEADER_SIZE(server) + 1;
+
+ length = cifs_read_from_socket(server,
+ buf + HEADER_SIZE(server) - 1, len);
+ if (length < 0)
+ return length;
+ server->total_read += length;
+
+ if (server->ops->is_session_expired &&
+ server->ops->is_session_expired(buf)) {
+ cifs_reconnect(server, true);
+ return -1;
+ }
+
+ if (server->ops->is_status_pending &&
+ server->ops->is_status_pending(buf, server)) {
+ cifs_discard_remaining_data(server);
+ return -1;
+ }
+
+ /* set up first two iov for signature check and to get credits */
+ rdata->iov[0].iov_base = buf;
+ rdata->iov[0].iov_len = server->vals->header_preamble_size;
+ rdata->iov[1].iov_base = buf + server->vals->header_preamble_size;
+ rdata->iov[1].iov_len =
+ server->total_read - server->vals->header_preamble_size;
+ cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
+ rdata->iov[0].iov_base, rdata->iov[0].iov_len);
+ cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
+ rdata->iov[1].iov_base, rdata->iov[1].iov_len);
+
+ /* Was the SMB read successful? */
+ rdata->result = server->ops->map_error(buf, false);
+ if (rdata->result != 0) {
+ cifs_dbg(FYI, "%s: server returned error %d\n",
+ __func__, rdata->result);
+ /* normal error on read response */
+ return __cifs_readv_discard(server, mid, false);
+ }
+
+ /* Is there enough to get to the rest of the READ_RSP header? */
+ if (server->total_read < server->vals->read_rsp_size) {
+ cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n",
+ __func__, server->total_read,
+ server->vals->read_rsp_size);
+ rdata->result = -EIO;
+ return cifs_readv_discard(server, mid);
+ }
+
+ data_offset = server->ops->read_data_offset(buf) +
+ server->vals->header_preamble_size;
+ if (data_offset < server->total_read) {
+ /*
+ * win2k8 sometimes sends an offset of 0 when the read
+ * is beyond the EOF. Treat it as if the data starts just after
+ * the header.
+ */
+ cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
+ __func__, data_offset);
+ data_offset = server->total_read;
+ } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
+ /* data_offset is beyond the end of smallbuf */
+ cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
+ __func__, data_offset);
+ rdata->result = -EIO;
+ return cifs_readv_discard(server, mid);
+ }
+
+ cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n",
+ __func__, server->total_read, data_offset);
+
+ len = data_offset - server->total_read;
+ if (len > 0) {
+ /* read any junk before data into the rest of smallbuf */
+ length = cifs_read_from_socket(server,
+ buf + server->total_read, len);
+ if (length < 0)
+ return length;
+ server->total_read += length;
+ }
+
+ /* how much data is in the response? */
+#ifdef CONFIG_CIFS_SMB_DIRECT
+ use_rdma_mr = rdata->mr;
+#endif
+ data_len = server->ops->read_data_length(buf, use_rdma_mr);
+ if (!use_rdma_mr && (data_offset + data_len > buflen)) {
+ /* data_len is corrupt -- discard frame */
+ rdata->result = -EIO;
+ return cifs_readv_discard(server, mid);
+ }
+
+ length = rdata->read_into_pages(server, rdata, data_len);
+ if (length < 0)
+ return length;
+
+ server->total_read += length;
+
+ cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n",
+ server->total_read, buflen, data_len);
+
+ /* discard anything left over */
+ if (server->total_read < buflen)
+ return cifs_readv_discard(server, mid);
+
+ dequeue_mid(mid, false);
+ mid->resp_buf = server->smallbuf;
+ server->smallbuf = NULL;
+ return length;
+}
break;
}
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
case XATTR_ACL_ACCESS:
#ifdef CONFIG_CIFS_POSIX
if (!value)
cifs_remap(cifs_sb));
#endif /* CONFIG_CIFS_POSIX */
break;
+#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
}
out:
}
break;
}
-
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
case XATTR_ACL_ACCESS:
#ifdef CONFIG_CIFS_POSIX
if (sb->s_flags & SB_POSIXACL)
cifs_remap(cifs_sb));
#endif /* CONFIG_CIFS_POSIX */
break;
+#endif /* ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY */
}
/* We could add an additional check for streams ie
projects / kernel.git / commitdiff