diff options
Diffstat (limited to 'fs/cifs')
-rw-r--r-- | fs/cifs/cifsencrypt.c | 6 | ||||
-rw-r--r-- | fs/cifs/cifsfs.c | 12 | ||||
-rw-r--r-- | fs/cifs/connect.c | 19 | ||||
-rw-r--r-- | fs/cifs/file.c | 94 | ||||
-rw-r--r-- | fs/cifs/inode.c | 2 | ||||
-rw-r--r-- | fs/cifs/smb2misc.c | 2 | ||||
-rw-r--r-- | fs/cifs/smb2ops.c | 3 | ||||
-rw-r--r-- | fs/cifs/smb2pdu.c | 17 |
8 files changed, 69 insertions, 86 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index 4ac7445..aa0dc25 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -1,6 +1,9 @@ /* * fs/cifs/cifsencrypt.c * + * Encryption and hashing operations relating to NTLM, NTLMv2. See MS-NLMP + * for more detailed information + * * Copyright (C) International Business Machines Corp., 2005,2013 * Author(s): Steve French (sfrench@us.ibm.com) * @@ -515,7 +518,8 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash, __func__); return rc; } - } else if (ses->serverName) { + } else { + /* We use ses->serverName if no domain name available */ len = strlen(ses->serverName); server = kmalloc(2 + (len * 2), GFP_KERNEL); diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index d72fe37..eaab4b2 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -906,8 +906,6 @@ const struct inode_operations cifs_symlink_inode_ops = { }; const struct file_operations cifs_file_ops = { - .read = new_sync_read, - .write = new_sync_write, .read_iter = cifs_loose_read_iter, .write_iter = cifs_file_write_iter, .open = cifs_open, @@ -926,8 +924,6 @@ const struct file_operations cifs_file_ops = { }; const struct file_operations cifs_file_strict_ops = { - .read = new_sync_read, - .write = new_sync_write, .read_iter = cifs_strict_readv, .write_iter = cifs_strict_writev, .open = cifs_open, @@ -947,8 +943,6 @@ const struct file_operations cifs_file_strict_ops = { const struct file_operations cifs_file_direct_ops = { /* BB reevaluate whether they can be done with directio, no cache */ - .read = new_sync_read, - .write = new_sync_write, .read_iter = cifs_user_readv, .write_iter = cifs_user_writev, .open = cifs_open, @@ -967,8 +961,6 @@ const struct file_operations cifs_file_direct_ops = { }; const struct file_operations cifs_file_nobrl_ops = { - .read = new_sync_read, - .write = new_sync_write, .read_iter = cifs_loose_read_iter, .write_iter = cifs_file_write_iter, .open = cifs_open, @@ -986,8 +978,6 @@ const struct file_operations cifs_file_nobrl_ops = { }; const struct file_operations cifs_file_strict_nobrl_ops = { - .read = new_sync_read, - .write = new_sync_write, .read_iter = cifs_strict_readv, .write_iter = cifs_strict_writev, .open = cifs_open, @@ -1006,8 +996,6 @@ const struct file_operations cifs_file_strict_nobrl_ops = { const struct file_operations cifs_file_direct_nobrl_ops = { /* BB reevaluate whether they can be done with directio, no cache */ - .read = new_sync_read, - .write = new_sync_write, .read_iter = cifs_user_readv, .write_iter = cifs_user_writev, .open = cifs_open, diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index d3aa999..f3bfe08 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -773,8 +773,7 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server) length = atomic_dec_return(&tcpSesAllocCount); if (length > 0) - mempool_resize(cifs_req_poolp, length + cifs_min_rcv, - GFP_KERNEL); + mempool_resize(cifs_req_poolp, length + cifs_min_rcv); } static int @@ -848,8 +847,7 @@ cifs_demultiplex_thread(void *p) length = atomic_inc_return(&tcpSesAllocCount); if (length > 1) - mempool_resize(cifs_req_poolp, length + cifs_min_rcv, - GFP_KERNEL); + mempool_resize(cifs_req_poolp, length + cifs_min_rcv); set_freezable(); while (server->tcpStatus != CifsExiting) { @@ -1599,6 +1597,8 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, pr_warn("CIFS: username too long\n"); goto cifs_parse_mount_err; } + + kfree(vol->username); vol->username = kstrdup(string, GFP_KERNEL); if (!vol->username) goto cifs_parse_mount_err; @@ -1700,6 +1700,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, goto cifs_parse_mount_err; } + kfree(vol->domainname); vol->domainname = kstrdup(string, GFP_KERNEL); if (!vol->domainname) { pr_warn("CIFS: no memory for domainname\n"); @@ -1731,6 +1732,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, } if (strncasecmp(string, "default", 7) != 0) { + kfree(vol->iocharset); vol->iocharset = kstrdup(string, GFP_KERNEL); if (!vol->iocharset) { @@ -2913,8 +2915,7 @@ ip_rfc1001_connect(struct TCP_Server_Info *server) * calling name ends in null (byte 16) from old smb * convention. */ - if (server->workstation_RFC1001_name && - server->workstation_RFC1001_name[0] != 0) + if (server->workstation_RFC1001_name[0] != 0) rfc1002mangle(ses_init_buf->trailer. session_req.calling_name, server->workstation_RFC1001_name, @@ -3692,6 +3693,12 @@ CIFSTCon(const unsigned int xid, struct cifs_ses *ses, #endif /* CIFS_WEAK_PW_HASH */ rc = SMBNTencrypt(tcon->password, ses->server->cryptkey, bcc_ptr, nls_codepage); + if (rc) { + cifs_dbg(FYI, "%s Can't generate NTLM rsp. Error: %d\n", + __func__, rc); + cifs_buf_release(smb_buffer); + return rc; + } bcc_ptr += CIFS_AUTH_RESP_SIZE; if (ses->capabilities & CAP_UNICODE) { diff --git a/fs/cifs/file.c b/fs/cifs/file.c index a94b3e6..ca2bc54 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1823,6 +1823,7 @@ refind_writable: cifsFileInfo_put(inv_file); spin_lock(&cifs_file_list_lock); ++refind; + inv_file = NULL; goto refind_writable; } } @@ -2559,10 +2560,9 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from, return rc; } -static ssize_t -cifs_iovec_write(struct file *file, struct iov_iter *from, loff_t *poffset) +ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from) { - size_t len; + struct file *file = iocb->ki_filp; ssize_t total_written = 0; struct cifsFileInfo *open_file; struct cifs_tcon *tcon; @@ -2572,15 +2572,15 @@ cifs_iovec_write(struct file *file, struct iov_iter *from, loff_t *poffset) struct iov_iter saved_from; int rc; - len = iov_iter_count(from); - rc = generic_write_checks(file, poffset, &len, 0); - if (rc) - return rc; - - if (!len) - return 0; + /* + * BB - optimize the way when signing is disabled. We can drop this + * extra memory-to-memory copying and use iovec buffers for constructing + * write request. + */ - iov_iter_truncate(from, len); + rc = generic_write_checks(iocb, from); + if (rc <= 0) + return rc; INIT_LIST_HEAD(&wdata_list); cifs_sb = CIFS_FILE_SB(file); @@ -2592,8 +2592,8 @@ cifs_iovec_write(struct file *file, struct iov_iter *from, loff_t *poffset) memcpy(&saved_from, from, sizeof(struct iov_iter)); - rc = cifs_write_from_iter(*poffset, len, from, open_file, cifs_sb, - &wdata_list); + rc = cifs_write_from_iter(iocb->ki_pos, iov_iter_count(from), from, + open_file, cifs_sb, &wdata_list); /* * If at least one write was successfully sent, then discard any rc @@ -2632,7 +2632,7 @@ restart_loop: memcpy(&tmp_from, &saved_from, sizeof(struct iov_iter)); iov_iter_advance(&tmp_from, - wdata->offset - *poffset); + wdata->offset - iocb->ki_pos); rc = cifs_write_from_iter(wdata->offset, wdata->bytes, &tmp_from, @@ -2649,34 +2649,13 @@ restart_loop: kref_put(&wdata->refcount, cifs_uncached_writedata_release); } - if (total_written > 0) - *poffset += total_written; + if (unlikely(!total_written)) + return rc; + iocb->ki_pos += total_written; + set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(file_inode(file))->flags); cifs_stats_bytes_written(tcon, total_written); - return total_written ? total_written : (ssize_t)rc; -} - -ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from) -{ - ssize_t written; - struct inode *inode; - loff_t pos = iocb->ki_pos; - - inode = file_inode(iocb->ki_filp); - - /* - * BB - optimize the way when signing is disabled. We can drop this - * extra memory-to-memory copying and use iovec buffers for constructing - * write request. - */ - - written = cifs_iovec_write(iocb->ki_filp, from, &pos); - if (written > 0) { - set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags); - iocb->ki_pos = pos; - } - - return written; + return total_written; } static ssize_t @@ -2687,8 +2666,7 @@ cifs_writev(struct kiocb *iocb, struct iov_iter *from) struct inode *inode = file->f_mapping->host; struct cifsInodeInfo *cinode = CIFS_I(inode); struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server; - ssize_t rc = -EACCES; - loff_t lock_pos = iocb->ki_pos; + ssize_t rc; /* * We need to hold the sem to be sure nobody modifies lock list @@ -2696,23 +2674,24 @@ cifs_writev(struct kiocb *iocb, struct iov_iter *from) */ down_read(&cinode->lock_sem); mutex_lock(&inode->i_mutex); - if (file->f_flags & O_APPEND) - lock_pos = i_size_read(inode); - if (!cifs_find_lock_conflict(cfile, lock_pos, iov_iter_count(from), + + rc = generic_write_checks(iocb, from); + if (rc <= 0) + goto out; + + if (!cifs_find_lock_conflict(cfile, iocb->ki_pos, iov_iter_count(from), server->vals->exclusive_lock_type, NULL, - CIFS_WRITE_OP)) { + CIFS_WRITE_OP)) rc = __generic_file_write_iter(iocb, from); - mutex_unlock(&inode->i_mutex); - - if (rc > 0) { - ssize_t err; + else + rc = -EACCES; +out: + mutex_unlock(&inode->i_mutex); - err = generic_write_sync(file, iocb->ki_pos - rc, rc); - if (err < 0) - rc = err; - } - } else { - mutex_unlock(&inode->i_mutex); + if (rc > 0) { + ssize_t err = generic_write_sync(file, iocb->ki_pos - rc, rc); + if (err < 0) + rc = err; } up_read(&cinode->lock_sem); return rc; @@ -3876,8 +3855,7 @@ void cifs_oplock_break(struct work_struct *work) * Direct IO is not yet supported in the cached mode. */ static ssize_t -cifs_direct_io(int rw, struct kiocb *iocb, struct iov_iter *iter, - loff_t pos) +cifs_direct_io(struct kiocb *iocb, struct iov_iter *iter, loff_t pos) { /* * FIXME diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 2d4f372..3e126d7 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -771,6 +771,8 @@ cifs_get_inode_info(struct inode **inode, const char *full_path, cifs_buf_release(srchinf->ntwrk_buf_start); } kfree(srchinf); + if (rc) + goto cgii_exit; } else goto cgii_exit; diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c index 689f035..22dfdf1 100644 --- a/fs/cifs/smb2misc.c +++ b/fs/cifs/smb2misc.c @@ -322,7 +322,7 @@ smb2_get_data_area_len(int *off, int *len, struct smb2_hdr *hdr) /* return pointer to beginning of data area, ie offset from SMB start */ if ((*off != 0) && (*len != 0)) - return hdr->ProtocolId + *off; + return (char *)(&hdr->ProtocolId[0]) + *off; else return NULL; } diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 96b5d40..eab05e1 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -684,7 +684,8 @@ smb2_clone_range(const unsigned int xid, /* No need to change MaxChunks since already set to 1 */ chunk_sizes_updated = true; - } + } else + goto cchunk_out; } cchunk_out: diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 3417340..65cd7a8 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -1218,7 +1218,7 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, struct smb2_ioctl_req *req; struct smb2_ioctl_rsp *rsp; struct TCP_Server_Info *server; - struct cifs_ses *ses = tcon->ses; + struct cifs_ses *ses; struct kvec iov[2]; int resp_buftype; int num_iovecs; @@ -1233,6 +1233,11 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, if (plen) *plen = 0; + if (tcon) + ses = tcon->ses; + else + return -EIO; + if (ses && (ses->server)) server = ses->server; else @@ -1296,14 +1301,12 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, rsp = (struct smb2_ioctl_rsp *)iov[0].iov_base; if ((rc != 0) && (rc != -EINVAL)) { - if (tcon) - cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); + cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); goto ioctl_exit; } else if (rc == -EINVAL) { if ((opcode != FSCTL_SRV_COPYCHUNK_WRITE) && (opcode != FSCTL_SRV_COPYCHUNK)) { - if (tcon) - cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); + cifs_stats_fail_inc(tcon, SMB2_IOCTL_HE); goto ioctl_exit; } } @@ -1629,7 +1632,7 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, rc = SendReceive2(xid, ses, iov, 1, &resp_buftype, 0); - if ((rc != 0) && tcon) + if (rc != 0) cifs_stats_fail_inc(tcon, SMB2_FLUSH_HE); free_rsp_buf(resp_buftype, iov[0].iov_base); @@ -2114,7 +2117,7 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, struct kvec iov[2]; int rc = 0; int len; - int resp_buftype; + int resp_buftype = CIFS_NO_BUFFER; unsigned char *bufptr; struct TCP_Server_Info *server; struct cifs_ses *ses = tcon->ses; |