spin_unlock(&server->req_lock);
cifs_num_waiters_inc(server);
rc = wait_event_killable(server->request_q,
- has_credits(server, &server->credits));
+ has_credits(server, &server->credits, 1));
cifs_num_waiters_dec(server);
if (rc)
return rc;
SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
cfid->fid->volatile_fid);
cfid->is_valid = false;
+ cfid->file_all_info_is_valid = false;
}
}
*/
int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
{
- struct cifs_open_parms oparams;
- int rc;
- __le16 srch_path = 0; /* Null - since an open of top of share */
+ struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = ses->server;
+ struct cifs_open_parms oparms;
+ struct smb2_create_rsp *o_rsp = NULL;
+ struct smb2_query_info_rsp *qi_rsp = NULL;
+ int resp_buftype[2];
+ struct smb_rqst rqst[2];
+ struct kvec rsp_iov[2];
+ struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
+ struct kvec qi_iov[1];
+ int rc, flags = 0;
+ __le16 utf16_path = 0; /* Null - since an open of top of share */
u8 oplock = SMB2_OPLOCK_LEVEL_II;
mutex_lock(&tcon->crfid.fid_mutex);
return 0;
}
- oparams.tcon = tcon;
- oparams.create_options = 0;
- oparams.desired_access = FILE_READ_ATTRIBUTES;
- oparams.disposition = FILE_OPEN;
- oparams.fid = pfid;
- oparams.reconnect = false;
-
- rc = SMB2_open(xid, &oparams, &srch_path, &oplock, NULL, NULL, NULL);
- if (rc == 0) {
- memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
- tcon->crfid.tcon = tcon;
- tcon->crfid.is_valid = true;
- kref_init(&tcon->crfid.refcount);
- kref_get(&tcon->crfid.refcount);
- }
+ if (smb3_encryption_required(tcon))
+ flags |= CIFS_TRANSFORM_REQ;
+
+ memset(rqst, 0, sizeof(rqst));
+ resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
+ memset(rsp_iov, 0, sizeof(rsp_iov));
+
+ /* Open */
+ memset(&open_iov, 0, sizeof(open_iov));
+ rqst[0].rq_iov = open_iov;
+ rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
+
+ oparms.tcon = tcon;
+ oparms.create_options = 0;
+ oparms.desired_access = FILE_READ_ATTRIBUTES;
+ oparms.disposition = FILE_OPEN;
+ oparms.fid = pfid;
+ oparms.reconnect = false;
+
+ rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &utf16_path);
+ if (rc)
+ goto oshr_exit;
+ smb2_set_next_command(tcon, &rqst[0]);
+
+ memset(&qi_iov, 0, sizeof(qi_iov));
+ rqst[1].rq_iov = qi_iov;
+ rqst[1].rq_nvec = 1;
+
+ rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
+ COMPOUND_FID, FILE_ALL_INFORMATION,
+ SMB2_O_INFO_FILE, 0,
+ sizeof(struct smb2_file_all_info) +
+ PATH_MAX * 2, 0, NULL);
+ if (rc)
+ goto oshr_exit;
+
+ smb2_set_related(&rqst[1]);
+
+ rc = compound_send_recv(xid, ses, flags, 2, rqst,
+ resp_buftype, rsp_iov);
+ if (rc)
+ goto oshr_exit;
+
+ o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
+ oparms.fid->persistent_fid = o_rsp->PersistentFileId;
+ oparms.fid->volatile_fid = o_rsp->VolatileFileId;
+#ifdef CONFIG_CIFS_DEBUG2
+ oparms.fid->mid = le64_to_cpu(o_rsp->sync_hdr.MessageId);
+#endif /* CIFS_DEBUG2 */
+
+ if (o_rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE)
+ oplock = smb2_parse_lease_state(server, o_rsp,
+ &oparms.fid->epoch,
+ oparms.fid->lease_key);
+ else
+ goto oshr_exit;
+
+
+ memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
+ tcon->crfid.tcon = tcon;
+ tcon->crfid.is_valid = true;
+ kref_init(&tcon->crfid.refcount);
+ kref_get(&tcon->crfid.refcount);
+
+
+ qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
+ if (le32_to_cpu(qi_rsp->OutputBufferLength) < sizeof(struct smb2_file_all_info))
+ goto oshr_exit;
+ rc = smb2_validate_and_copy_iov(
+ le16_to_cpu(qi_rsp->OutputBufferOffset),
+ sizeof(struct smb2_file_all_info),
+ &rsp_iov[1], sizeof(struct smb2_file_all_info),
+ (char *)&tcon->crfid.file_all_info);
+ if (rc)
+ goto oshr_exit;
+ tcon->crfid.file_all_info_is_valid = 1;
+
+ oshr_exit:
mutex_unlock(&tcon->crfid.fid_mutex);
+ SMB2_open_free(&rqst[0]);
+ SMB2_query_info_free(&rqst[1]);
+ free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
+ free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
return rc;
}
struct smb_query_info __user *pqi;
int rc = 0;
int flags = 0;
- struct smb2_query_info_rsp *rsp = NULL;
+ struct smb2_query_info_rsp *qi_rsp = NULL;
+ struct smb2_ioctl_rsp *io_rsp = NULL;
void *buffer = NULL;
struct smb_rqst rqst[3];
int resp_buftype[3];
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
struct cifs_fid fid;
struct kvec qi_iov[1];
+ struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
struct kvec close_iov[1];
memset(rqst, 0, sizeof(rqst));
smb2_set_next_command(tcon, &rqst[0]);
/* Query */
- memset(&qi_iov, 0, sizeof(qi_iov));
- rqst[1].rq_iov = qi_iov;
- rqst[1].rq_nvec = 1;
-
- rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
- qi.file_info_class, qi.info_type,
- qi.additional_information,
+ if (qi.flags & PASSTHRU_FSCTL) {
+ /* Can eventually relax perm check since server enforces too */
+ if (!capable(CAP_SYS_ADMIN))
+ rc = -EPERM;
+ else {
+ memset(&io_iov, 0, sizeof(io_iov));
+ rqst[1].rq_iov = io_iov;
+ rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
+
+ rc = SMB2_ioctl_init(tcon, &rqst[1],
+ COMPOUND_FID, COMPOUND_FID,
+ qi.info_type, true, NULL,
+ 0);
+ }
+ } else if (qi.flags == PASSTHRU_QUERY_INFO) {
+ memset(&qi_iov, 0, sizeof(qi_iov));
+ rqst[1].rq_iov = qi_iov;
+ rqst[1].rq_nvec = 1;
+
+ rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
+ COMPOUND_FID, qi.file_info_class,
+ qi.info_type, qi.additional_information,
qi.input_buffer_length,
qi.output_buffer_length, buffer);
+ } else { /* unknown flags */
+ cifs_dbg(VFS, "invalid passthru query flags: 0x%x\n", qi.flags);
+ rc = -EINVAL;
+ }
+
if (rc)
goto iqinf_exit;
smb2_set_next_command(tcon, &rqst[1]);
resp_buftype, rsp_iov);
if (rc)
goto iqinf_exit;
- pqi = (struct smb_query_info __user *)arg;
- rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
- if (le32_to_cpu(rsp->OutputBufferLength) < qi.input_buffer_length)
- qi.input_buffer_length = le32_to_cpu(rsp->OutputBufferLength);
- if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
- sizeof(qi.input_buffer_length))) {
- rc = -EFAULT;
- goto iqinf_exit;
- }
- if (copy_to_user(pqi + 1, rsp->Buffer, qi.input_buffer_length)) {
- rc = -EFAULT;
- goto iqinf_exit;
+ if (qi.flags & PASSTHRU_FSCTL) {
+ pqi = (struct smb_query_info __user *)arg;
+ io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base;
+ if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length)
+ qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount);
+ if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
+ sizeof(qi.input_buffer_length))) {
+ rc = -EFAULT;
+ goto iqinf_exit;
+ }
+ if (copy_to_user(pqi + 1, &io_rsp[1], qi.input_buffer_length)) {
+ rc = -EFAULT;
+ goto iqinf_exit;
+ }
+ } else {
+ pqi = (struct smb_query_info __user *)arg;
+ qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
+ if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length)
+ qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength);
+ if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
+ sizeof(qi.input_buffer_length))) {
+ rc = -EFAULT;
+ goto iqinf_exit;
+ }
+ if (copy_to_user(pqi + 1, qi_rsp->Buffer, qi.input_buffer_length)) {
+ rc = -EFAULT;
+ goto iqinf_exit;
+ }
}
iqinf_exit:
kfree(buffer);
SMB2_open_free(&rqst[0]);
- SMB2_query_info_free(&rqst[1]);
+ if (qi.flags & PASSTHRU_FSCTL)
+ SMB2_ioctl_free(&rqst[1]);
+ else
+ SMB2_query_info_free(&rqst[1]);
+
SMB2_close_free(&rqst[2]);
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
loff_t offset, loff_t len, bool keep_size)
{
+ struct cifs_ses *ses = tcon->ses;
struct inode *inode;
struct cifsInodeInfo *cifsi;
struct cifsFileInfo *cfile = file->private_data;
struct file_zero_data_information fsctl_buf;
+ struct smb_rqst rqst[2];
+ int resp_buftype[2];
+ struct kvec rsp_iov[2];
+ struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
+ struct kvec si_iov[1];
+ unsigned int size[1];
+ void *data[1];
long rc;
unsigned int xid;
+ int num = 0, flags = 0;
+ __le64 eof;
xid = get_xid();
inode = d_inode(cfile->dentry);
cifsi = CIFS_I(inode);
+ trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
+ ses->Suid, offset, len);
+
+
/* if file not oplocked can't be sure whether asking to extend size */
if (!CIFS_CACHE_READ(cifsi))
if (keep_size == false) {
rc = -EOPNOTSUPP;
+ trace_smb3_zero_err(xid, cfile->fid.persistent_fid,
+ tcon->tid, ses->Suid, offset, len, rc);
free_xid(xid);
return rc;
}
*/
if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
rc = -EOPNOTSUPP;
+ trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
+ ses->Suid, offset, len, rc);
free_xid(xid);
return rc;
}
- /*
- * need to make sure we are not asked to extend the file since the SMB3
- * fsctl does not change the file size. In the future we could change
- * this to zero the first part of the range then set the file size
- * which for a non sparse file would zero the newly extended range
- */
- if (keep_size == false)
- if (i_size_read(inode) < offset + len) {
- rc = -EOPNOTSUPP;
- free_xid(xid);
- return rc;
- }
-
cifs_dbg(FYI, "offset %lld len %lld", offset, len);
fsctl_buf.FileOffset = cpu_to_le64(offset);
fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
- rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
- cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
- true /* is_fctl */, (char *)&fsctl_buf,
- sizeof(struct file_zero_data_information), NULL, NULL);
+ if (smb3_encryption_required(tcon))
+ flags |= CIFS_TRANSFORM_REQ;
+
+ memset(rqst, 0, sizeof(rqst));
+ resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
+ memset(rsp_iov, 0, sizeof(rsp_iov));
+
+
+ memset(&io_iov, 0, sizeof(io_iov));
+ rqst[num].rq_iov = io_iov;
+ rqst[num].rq_nvec = SMB2_IOCTL_IOV_SIZE;
+ rc = SMB2_ioctl_init(tcon, &rqst[num++], cfile->fid.persistent_fid,
+ cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
+ true /* is_fctl */, (char *)&fsctl_buf,
+ sizeof(struct file_zero_data_information));
+ if (rc)
+ goto zero_range_exit;
+
+ /*
+ * do we also need to change the size of the file?
+ */
+ if (keep_size == false && i_size_read(inode) < offset + len) {
+ smb2_set_next_command(tcon, &rqst[0]);
+
+ memset(&si_iov, 0, sizeof(si_iov));
+ rqst[num].rq_iov = si_iov;
+ rqst[num].rq_nvec = 1;
+
+ eof = cpu_to_le64(offset + len);
+ size[0] = 8; /* sizeof __le64 */
+ data[0] = &eof;
+
+ rc = SMB2_set_info_init(tcon, &rqst[num++],
+ cfile->fid.persistent_fid,
+ cfile->fid.persistent_fid,
+ current->tgid,
+ FILE_END_OF_FILE_INFORMATION,
+ SMB2_O_INFO_FILE, 0, data, size);
+ smb2_set_related(&rqst[1]);
+ }
+
+ rc = compound_send_recv(xid, ses, flags, num, rqst,
+ resp_buftype, rsp_iov);
+
+ zero_range_exit:
+ SMB2_ioctl_free(&rqst[0]);
+ SMB2_set_info_free(&rqst[1]);
+ free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
+ free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
free_xid(xid);
+ if (rc)
+ trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
+ ses->Suid, offset, len, rc);
+ else
+ trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid,
+ ses->Suid, offset, len);
return rc;
}
struct cifsFileInfo *cfile = file->private_data;
long rc = -EOPNOTSUPP;
unsigned int xid;
+ __le64 eof;
xid = get_xid();
inode = d_inode(cfile->dentry);
cifsi = CIFS_I(inode);
+ trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid,
+ tcon->ses->Suid, off, len);
/* if file not oplocked can't be sure whether asking to extend size */
if (!CIFS_CACHE_READ(cifsi))
if (keep_size == false) {
+ trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
+ tcon->tid, tcon->ses->Suid, off, len, rc);
free_xid(xid);
return rc;
}
/* BB: in future add else clause to extend file */
else
rc = -EOPNOTSUPP;
+ if (rc)
+ trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
+ tcon->tid, tcon->ses->Suid, off, len, rc);
+ else
+ trace_smb3_falloc_done(xid, cfile->fid.persistent_fid,
+ tcon->tid, tcon->ses->Suid, off, len);
free_xid(xid);
return rc;
}
*/
if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
rc = -EOPNOTSUPP;
+ trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
+ tcon->tid, tcon->ses->Suid, off, len, rc);
free_xid(xid);
return rc;
}
- rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
+ smb2_set_sparse(xid, tcon, cfile, inode, false);
+ rc = 0;
+ } else {
+ smb2_set_sparse(xid, tcon, cfile, inode, false);
+ rc = 0;
+ if (i_size_read(inode) < off + len) {
+ eof = cpu_to_le64(off + len);
+ rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
+ cfile->fid.volatile_fid, cfile->pid,
+ &eof);
+ }
}
- /* BB: else ... in future add code to extend file and set sparse */
+ if (rc)
+ trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
+ tcon->ses->Suid, off, len, rc);
+ else
+ trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid,
+ tcon->ses->Suid, off, len);
free_xid(xid);
return rc;
return le32_to_cpu(hdr->NextCommand);
}
+static int
+smb2_make_node(unsigned int xid, struct inode *inode,
+ struct dentry *dentry, struct cifs_tcon *tcon,
+ char *full_path, umode_t mode, dev_t dev)
+{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ int rc = -EPERM;
+ int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL;
+ FILE_ALL_INFO *buf = NULL;
+ struct cifs_io_parms io_parms;
+ __u32 oplock = 0;
+ struct cifs_fid fid;
+ struct cifs_open_parms oparms;
+ unsigned int bytes_written;
+ struct win_dev *pdev;
+ struct kvec iov[2];
+
+ /*
+ * Check if mounted with mount parm 'sfu' mount parm.
+ * SFU emulation should work with all servers, but only
+ * supports block and char device (no socket & fifo),
+ * and was used by default in earlier versions of Windows
+ */
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
+ goto out;
+
+ /*
+ * TODO: Add ability to create instead via reparse point. Windows (e.g.
+ * their current NFS server) uses this approach to expose special files
+ * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
+ */
+
+ if (!S_ISCHR(mode) && !S_ISBLK(mode))
+ goto out;
+
+ cifs_dbg(FYI, "sfu compat create special file\n");
+
+ buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
+ if (buf == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ if (backup_cred(cifs_sb))
+ create_options |= CREATE_OPEN_BACKUP_INTENT;
+
+ oparms.tcon = tcon;
+ oparms.cifs_sb = cifs_sb;
+ oparms.desired_access = GENERIC_WRITE;
+ oparms.create_options = create_options;
+ oparms.disposition = FILE_CREATE;
+ oparms.path = full_path;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ if (tcon->ses->server->oplocks)
+ oplock = REQ_OPLOCK;
+ else
+ oplock = 0;
+ rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
+ if (rc)
+ goto out;
+
+ /*
+ * BB Do not bother to decode buf since no local inode yet to put
+ * timestamps in, but we can reuse it safely.
+ */
+
+ pdev = (struct win_dev *)buf;
+ io_parms.pid = current->tgid;
+ io_parms.tcon = tcon;
+ io_parms.offset = 0;
+ io_parms.length = sizeof(struct win_dev);
+ iov[1].iov_base = buf;
+ iov[1].iov_len = sizeof(struct win_dev);
+ if (S_ISCHR(mode)) {
+ memcpy(pdev->type, "IntxCHR", 8);
+ pdev->major = cpu_to_le64(MAJOR(dev));
+ pdev->minor = cpu_to_le64(MINOR(dev));
+ rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
+ &bytes_written, iov, 1);
+ } else if (S_ISBLK(mode)) {
+ memcpy(pdev->type, "IntxBLK", 8);
+ pdev->major = cpu_to_le64(MAJOR(dev));
+ pdev->minor = cpu_to_le64(MINOR(dev));
+ rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
+ &bytes_written, iov, 1);
+ }
+ tcon->ses->server->ops->close(xid, tcon, &fid);
+ d_drop(dentry);
+
+ /* FIXME: add code here to set EAs */
+out:
+ kfree(buf);
+ return rc;
+}
+
+
struct smb_version_operations smb20_operations = {
.compare_fids = smb2_compare_fids,
.setup_request = smb2_setup_request,
#endif /* CIFS_ACL */
.next_header = smb2_next_header,
.ioctl_query_info = smb2_ioctl_query_info,
+ .make_node = smb2_make_node,
};
struct smb_version_operations smb21_operations = {
#endif /* CIFS_ACL */
.next_header = smb2_next_header,
.ioctl_query_info = smb2_ioctl_query_info,
+ .make_node = smb2_make_node,
};
struct smb_version_operations smb30_operations = {
#endif /* CIFS_ACL */
.next_header = smb2_next_header,
.ioctl_query_info = smb2_ioctl_query_info,
+ .make_node = smb2_make_node,
};
struct smb_version_operations smb311_operations = {
#endif /* CIFS_ACL */
.next_header = smb2_next_header,
.ioctl_query_info = smb2_ioctl_query_info,
+ .make_node = smb2_make_node,
};
struct smb_version_values smb20_values = {
git.samba.org / sfrench / cifs-2.6.git / blobdiff