Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: Cleanup: check return codes of crypto api calls
  CIFS: Fix oops while mounting with prefixpath
  [CIFS] Redundant null check after dereference
  cifs: use cifs_dirent in cifs_save_resume_key
  cifs: use cifs_dirent to replace cifs_get_name_from_search_buf
  cifs: introduce cifs_dirent
  cifs: cleanup cifs_filldir

fs/cifs/cifsencrypt.c

@@ -52,19 +52,29 @@ static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
 
 	rc = crypto_shash_init(&server->secmech.sdescmd5->shash);
 	if (rc) {
-		cERROR(1, "%s: Oould not init md5\n", __func__);
+		cERROR(1, "%s: Could not init md5\n", __func__);
 		return rc;
 	}
 
-	crypto_shash_update(&server->secmech.sdescmd5->shash,
+	rc = crypto_shash_update(&server->secmech.sdescmd5->shash,
 		server->session_key.response, server->session_key.len);
+	if (rc) {
+		cERROR(1, "%s: Could not update with response\n", __func__);
+		return rc;
+	}
 
-	crypto_shash_update(&server->secmech.sdescmd5->shash,
+	rc = crypto_shash_update(&server->secmech.sdescmd5->shash,
 		cifs_pdu->Protocol, be32_to_cpu(cifs_pdu->smb_buf_length));
+	if (rc) {
+		cERROR(1, "%s: Could not update with payload\n", __func__);
+		return rc;
+	}
 
 	rc = crypto_shash_final(&server->secmech.sdescmd5->shash, signature);
+	if (rc)
+		cERROR(1, "%s: Could not generate md5 hash\n", __func__);
 
-	return 0;
+	return rc;
 }
 
 /* must be called with server->srv_mutex held */
@@ -112,12 +122,16 @@ static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
 
 	rc = crypto_shash_init(&server->secmech.sdescmd5->shash);
 	if (rc) {
-		cERROR(1, "%s: Oould not init md5\n", __func__);
+		cERROR(1, "%s: Could not init md5\n", __func__);
 		return rc;
 	}
 
-	crypto_shash_update(&server->secmech.sdescmd5->shash,
+	rc = crypto_shash_update(&server->secmech.sdescmd5->shash,
 		server->session_key.response, server->session_key.len);
+	if (rc) {
+		cERROR(1, "%s: Could not update with response\n", __func__);
+		return rc;
+	}
 
 	for (i = 0; i < n_vec; i++) {
 		if (iov[i].iov_len == 0)
@@ -131,14 +145,24 @@ static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
 		if (i == 0) {
 			if (iov[0].iov_len <= 8) /* cmd field at offset 9 */
 				break; /* nothing to sign or corrupt header */
+			rc =
 			crypto_shash_update(&server->secmech.sdescmd5->shash,
 				iov[i].iov_base + 4, iov[i].iov_len - 4);
-		} else
+		} else {
+			rc =
 			crypto_shash_update(&server->secmech.sdescmd5->shash,
 				iov[i].iov_base, iov[i].iov_len);
+		}
+		if (rc) {
+			cERROR(1, "%s: Could not update with payload\n",
+							__func__);
+			return rc;
+		}
 	}
 
 	rc = crypto_shash_final(&server->secmech.sdescmd5->shash, signature);
+	if (rc)
+		cERROR(1, "%s: Could not generate md5 hash\n", __func__);
 
 	return rc;
 }
@@ -463,8 +487,12 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
 	/* calculate md4 hash of password */
 	E_md4hash(ses->password, nt_hash);
 
-	crypto_shash_setkey(ses->server->secmech.hmacmd5, nt_hash,
+	rc = crypto_shash_setkey(ses->server->secmech.hmacmd5, nt_hash,
 				CIFS_NTHASH_SIZE);
+	if (rc) {
+		cERROR(1, "%s: Could not set NT Hash as a key", __func__);
+		return rc;
+	}
 
 	rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
 	if (rc) {
@@ -478,13 +506,18 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
 	if (user == NULL) {
 		cERROR(1, "calc_ntlmv2_hash: user mem alloc failure\n");
 		rc = -ENOMEM;
-		goto calc_exit_2;
+		return rc;
 	}
 	len = cifs_strtoUCS((__le16 *)user, ses->user_name, len, nls_cp);
 	UniStrupr(user);
 
-	crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
+	rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
 				(char *)user, 2 * len);
+	kfree(user);
+	if (rc) {
+		cERROR(1, "%s: Could not update with user\n", __func__);
+		return rc;
+	}
 
 	/* convert ses->domainName to unicode and uppercase */
 	if (ses->domainName) {
@@ -494,13 +527,19 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
 		if (domain == NULL) {
 			cERROR(1, "calc_ntlmv2_hash: domain mem alloc failure");
 			rc = -ENOMEM;
-			goto calc_exit_1;
+			return rc;
 		}
 		len = cifs_strtoUCS((__le16 *)domain, ses->domainName, len,
 					nls_cp);
+		rc =
 		crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
 					(char *)domain, 2 * len);
 		kfree(domain);
+		if (rc) {
+			cERROR(1, "%s: Could not update with domain\n",
+								__func__);
+			return rc;
+		}
 	} else if (ses->serverName) {
 		len = strlen(ses->serverName);
 
@@ -508,21 +547,26 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
 		if (server == NULL) {
 			cERROR(1, "calc_ntlmv2_hash: server mem alloc failure");
 			rc = -ENOMEM;
-			goto calc_exit_1;
+			return rc;
 		}
 		len = cifs_strtoUCS((__le16 *)server, ses->serverName, len,
 					nls_cp);
+		rc =
 		crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
 					(char *)server, 2 * len);
 		kfree(server);
+		if (rc) {
+			cERROR(1, "%s: Could not update with server\n",
+								__func__);
+			return rc;
+		}
 	}
 
 	rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
 					ntlmv2_hash);
+	if (rc)
+		cERROR(1, "%s: Could not generate md5 hash\n", __func__);
 
-calc_exit_1:
-	kfree(user);
-calc_exit_2:
 	return rc;
 }
 
@@ -537,8 +581,12 @@ CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash)
 		return -1;
 	}
 
-	crypto_shash_setkey(ses->server->secmech.hmacmd5,
+	rc = crypto_shash_setkey(ses->server->secmech.hmacmd5,
 				ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE);
+	if (rc) {
+		cERROR(1, "%s: Could not set NTLMV2 Hash as a key", __func__);
+		return rc;
+	}
 
 	rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
 	if (rc) {
@@ -552,11 +600,17 @@ CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash)
 	else
 		memcpy(ses->auth_key.response + offset,
 			ses->server->cryptkey, CIFS_SERVER_CHALLENGE_SIZE);
-	crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
+	rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
 		ses->auth_key.response + offset, ses->auth_key.len - offset);
+	if (rc) {
+		cERROR(1, "%s: Could not update with response\n", __func__);
+		return rc;
+	}
 
 	rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
 		ses->auth_key.response + CIFS_SESS_KEY_SIZE);
+	if (rc)
+		cERROR(1, "%s: Could not generate md5 hash\n", __func__);
 
 	return rc;
 }
@@ -626,8 +680,12 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
 	}
 
 	/* now calculate the session key for NTLMv2 */
-	crypto_shash_setkey(ses->server->secmech.hmacmd5,
+	rc = crypto_shash_setkey(ses->server->secmech.hmacmd5,
 		ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE);
+	if (rc) {
+		cERROR(1, "%s: Could not set NTLMV2 Hash as a key", __func__);
+		goto setup_ntlmv2_rsp_ret;
+	}
 
 	rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
 	if (rc) {
@@ -635,12 +693,18 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
 		goto setup_ntlmv2_rsp_ret;
 	}
 
-	crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
+	rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
 		ses->auth_key.response + CIFS_SESS_KEY_SIZE,
 		CIFS_HMAC_MD5_HASH_SIZE);
+	if (rc) {
+		cERROR(1, "%s: Could not update with response\n", __func__);
+		goto setup_ntlmv2_rsp_ret;
+	}
 
 	rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
 		ses->auth_key.response);
+	if (rc)
+		cERROR(1, "%s: Could not generate md5 hash\n", __func__);
 
 setup_ntlmv2_rsp_ret:
 	kfree(tiblob);
@@ -668,8 +732,12 @@ calc_seckey(struct cifs_ses *ses)
 
 	desc.tfm = tfm_arc4;
 
-	crypto_blkcipher_setkey(tfm_arc4, ses->auth_key.response,
+	rc = crypto_blkcipher_setkey(tfm_arc4, ses->auth_key.response,
 					CIFS_SESS_KEY_SIZE);
+	if (rc) {
+		cERROR(1, "%s: Could not set response as a key", __func__);
+		return rc;
+	}
 
 	sg_init_one(&sgin, sec_key, CIFS_SESS_KEY_SIZE);
 	sg_init_one(&sgout, ses->ntlmssp->ciphertext, CIFS_CPHTXT_SIZE);
@@ -688,7 +756,7 @@ calc_seckey(struct cifs_ses *ses)
 
 	crypto_free_blkcipher(tfm_arc4);
 
-	return 0;
+	return rc;
 }
 
 void

fs/cifs/cifsglob.h

@@ -501,7 +501,7 @@ struct cifs_search_info {
 	char *ntwrk_buf_start;
 	char *srch_entries_start;
 	char *last_entry;
-	char *presume_name;
+	const char *presume_name;
 	unsigned int resume_name_len;
 	bool endOfSearch:1;
 	bool emptyDir:1;

fs/cifs/dir.c

@@ -57,11 +57,6 @@ build_path_from_dentry(struct dentry *direntry)
 	struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
 	unsigned seq;
 
-	if (direntry == NULL)
-		return NULL;  /* not much we can do if dentry is freed and
-		we need to reopen the file after it was closed implicitly
-		when the server crashed */
-
 	dirsep = CIFS_DIR_SEP(cifs_sb);
 	if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
 		dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);

fs/cifs/link.c

@@ -74,8 +74,14 @@ symlink_hash(unsigned int link_len, const char *link_str, u8 *md5_hash)
 		cERROR(1, "%s: Could not init md5 shash\n", __func__);
 		goto symlink_hash_err;
 	}
-	crypto_shash_update(&sdescmd5->shash, link_str, link_len);
+	rc = crypto_shash_update(&sdescmd5->shash, link_str, link_len);
+	if (rc) {
+		cERROR(1, "%s: Could not update iwth link_str\n", __func__);
+		goto symlink_hash_err;
+	}
 	rc = crypto_shash_final(&sdescmd5->shash, md5_hash);
+	if (rc)
+		cERROR(1, "%s: Could not generate md5 hash\n", __func__);
 
 symlink_hash_err:
 	crypto_free_shash(md5);

fs/cifs/readdir.c

@@ -4,6 +4,7 @@
  *   Directory search handling
  *
  *   Copyright (C) International Business Machines  Corp., 2004, 2008
+ *   Copyright (C) Red Hat, Inc., 2011
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *
  *   This library is free software; you can redistribute it and/or modify
@@ -290,10 +291,10 @@ error_exit:
 }
 
 /* return length of unicode string in bytes */
-static int cifs_unicode_bytelen(char *str)
+static int cifs_unicode_bytelen(const char *str)
 {
 	int len;
-	__le16 *ustr = (__le16 *)str;
+	const __le16 *ustr = (const __le16 *)str;
 
 	for (len = 0; len <= PATH_MAX; len++) {
 		if (ustr[len] == 0)
@@ -334,78 +335,128 @@ static char *nxt_dir_entry(char *old_entry, char *end_of_smb, int level)
 
 }
 
+struct cifs_dirent {
+	const char	*name;
+	size_t		namelen;
+	u32		resume_key;
+	u64		ino;
+};
+
+static void cifs_fill_dirent_unix(struct cifs_dirent *de,
+		const FILE_UNIX_INFO *info, bool is_unicode)
+{
+	de->name = &info->FileName[0];
+	if (is_unicode)
+		de->namelen = cifs_unicode_bytelen(de->name);
+	else
+		de->namelen = strnlen(de->name, PATH_MAX);
+	de->resume_key = info->ResumeKey;
+	de->ino = le64_to_cpu(info->basic.UniqueId);
+}
+
+static void cifs_fill_dirent_dir(struct cifs_dirent *de,
+		const FILE_DIRECTORY_INFO *info)
+{
+	de->name = &info->FileName[0];
+	de->namelen = le32_to_cpu(info->FileNameLength);
+	de->resume_key = info->FileIndex;
+}
+
+static void cifs_fill_dirent_full(struct cifs_dirent *de,
+		const FILE_FULL_DIRECTORY_INFO *info)
+{
+	de->name = &info->FileName[0];
+	de->namelen = le32_to_cpu(info->FileNameLength);
+	de->resume_key = info->FileIndex;
+}
+
+static void cifs_fill_dirent_search(struct cifs_dirent *de,
+		const SEARCH_ID_FULL_DIR_INFO *info)
+{
+	de->name = &info->FileName[0];
+	de->namelen = le32_to_cpu(info->FileNameLength);
+	de->resume_key = info->FileIndex;
+	de->ino = le64_to_cpu(info->UniqueId);
+}
+
+static void cifs_fill_dirent_both(struct cifs_dirent *de,
+		const FILE_BOTH_DIRECTORY_INFO *info)
+{
+	de->name = &info->FileName[0];
+	de->namelen = le32_to_cpu(info->FileNameLength);
+	de->resume_key = info->FileIndex;
+}
+
+static void cifs_fill_dirent_std(struct cifs_dirent *de,
+		const FIND_FILE_STANDARD_INFO *info)
+{
+	de->name = &info->FileName[0];
+	/* one byte length, no endianess conversion */
+	de->namelen = info->FileNameLength;
+	de->resume_key = info->ResumeKey;
+}
+
+static int cifs_fill_dirent(struct cifs_dirent *de, const void *info,
+		u16 level, bool is_unicode)
+{
+	memset(de, 0, sizeof(*de));
+
+	switch (level) {
+	case SMB_FIND_FILE_UNIX:
+		cifs_fill_dirent_unix(de, info, is_unicode);
+		break;
+	case SMB_FIND_FILE_DIRECTORY_INFO:
+		cifs_fill_dirent_dir(de, info);
+		break;
+	case SMB_FIND_FILE_FULL_DIRECTORY_INFO:
+		cifs_fill_dirent_full(de, info);
+		break;
+	case SMB_FIND_FILE_ID_FULL_DIR_INFO:
+		cifs_fill_dirent_search(de, info);
+		break;
+	case SMB_FIND_FILE_BOTH_DIRECTORY_INFO:
+		cifs_fill_dirent_both(de, info);
+		break;
+	case SMB_FIND_FILE_INFO_STANDARD:
+		cifs_fill_dirent_std(de, info);
+		break;
+	default:
+		cFYI(1, "Unknown findfirst level %d", level);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 #define UNICODE_DOT cpu_to_le16(0x2e)
 
 /* return 0 if no match and 1 for . (current directory) and 2 for .. (parent) */
-static int cifs_entry_is_dot(char *current_entry, struct cifsFileInfo *cfile)
+static int cifs_entry_is_dot(struct cifs_dirent *de, bool is_unicode)
 {
 	int rc = 0;
-	char *filename = NULL;
-	int len = 0;
-
-	if (cfile->srch_inf.info_level == SMB_FIND_FILE_UNIX) {
-		FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		if (cfile->srch_inf.unicode) {
-			len = cifs_unicode_bytelen(filename);
-		} else {
-			/* BB should we make this strnlen of PATH_MAX? */
-			len = strnlen(filename, 5);
-		}
-	} else if (cfile->srch_inf.info_level == SMB_FIND_FILE_DIRECTORY_INFO) {
-		FILE_DIRECTORY_INFO *pFindData =
-			(FILE_DIRECTORY_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = le32_to_cpu(pFindData->FileNameLength);
-	} else if (cfile->srch_inf.info_level ==
-			SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
-		FILE_FULL_DIRECTORY_INFO *pFindData =
-			(FILE_FULL_DIRECTORY_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = le32_to_cpu(pFindData->FileNameLength);
-	} else if (cfile->srch_inf.info_level ==
-			SMB_FIND_FILE_ID_FULL_DIR_INFO) {
-		SEARCH_ID_FULL_DIR_INFO *pFindData =
-			(SEARCH_ID_FULL_DIR_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = le32_to_cpu(pFindData->FileNameLength);
-	} else if (cfile->srch_inf.info_level ==
-			SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
-		FILE_BOTH_DIRECTORY_INFO *pFindData =
-			(FILE_BOTH_DIRECTORY_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = le32_to_cpu(pFindData->FileNameLength);
-	} else if (cfile->srch_inf.info_level == SMB_FIND_FILE_INFO_STANDARD) {
-		FIND_FILE_STANDARD_INFO *pFindData =
-			(FIND_FILE_STANDARD_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = pFindData->FileNameLength;
-	} else {
-		cFYI(1, "Unknown findfirst level %d",
-			 cfile->srch_inf.info_level);
-	}
 
-	if (filename) {
-		if (cfile->srch_inf.unicode) {
-			__le16 *ufilename = (__le16 *)filename;
-			if (len == 2) {
-				/* check for . */
-				if (ufilename[0] == UNICODE_DOT)
-					rc = 1;
-			} else if (len == 4) {
-				/* check for .. */
-				if ((ufilename[0] == UNICODE_DOT)
-				   && (ufilename[1] == UNICODE_DOT))
-					rc = 2;
-			}
-		} else /* ASCII */ {
-			if (len == 1) {
-				if (filename[0] == '.')
-					rc = 1;
-			} else if (len == 2) {
-				if ((filename[0] == '.') && (filename[1] == '.'))
-					rc = 2;
-			}
+	if (!de->name)
+		return 0;
+
+	if (is_unicode) {
+		__le16 *ufilename = (__le16 *)de->name;
+		if (de->namelen == 2) {
+			/* check for . */
+			if (ufilename[0] == UNICODE_DOT)
+				rc = 1;
+		} else if (de->namelen == 4) {
+			/* check for .. */
+			if (ufilename[0] == UNICODE_DOT &&
+			    ufilename[1] == UNICODE_DOT)
+				rc = 2;
+		}
+	} else /* ASCII */ {
+		if (de->namelen == 1) {
+			if (de->name[0] == '.')
+				rc = 1;
+		} else if (de->namelen == 2) {
+			if (de->name[0] == '.' && de->name[1] == '.')
+				rc = 2;
 		}
 	}
 
@@ -427,66 +478,18 @@ static int is_dir_changed(struct file *file)
 }
 
 static int cifs_save_resume_key(const char *current_entry,
-	struct cifsFileInfo *cifsFile)
+	struct cifsFileInfo *file_info)
 {
-	int rc = 0;
-	unsigned int len = 0;
-	__u16 level;
-	char *filename;
-
-	if ((cifsFile == NULL) || (current_entry == NULL))
-		return -EINVAL;
-
-	level = cifsFile->srch_inf.info_level;
-
-	if (level == SMB_FIND_FILE_UNIX) {
-		FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry;
+	struct cifs_dirent de;
+	int rc;
 
-		filename = &pFindData->FileName[0];
-		if (cifsFile->srch_inf.unicode) {
-			len = cifs_unicode_bytelen(filename);
-		} else {
-			/* BB should we make this strnlen of PATH_MAX? */
-			len = strnlen(filename, PATH_MAX);
-		}
-		cifsFile->srch_inf.resume_key = pFindData->ResumeKey;
-	} else if (level == SMB_FIND_FILE_DIRECTORY_INFO) {
-		FILE_DIRECTORY_INFO *pFindData =
-			(FILE_DIRECTORY_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = le32_to_cpu(pFindData->FileNameLength);
-		cifsFile->srch_inf.resume_key = pFindData->FileIndex;
-	} else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
-		FILE_FULL_DIRECTORY_INFO *pFindData =
-			(FILE_FULL_DIRECTORY_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = le32_to_cpu(pFindData->FileNameLength);
-		cifsFile->srch_inf.resume_key = pFindData->FileIndex;
-	} else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) {
-		SEARCH_ID_FULL_DIR_INFO *pFindData =
-			(SEARCH_ID_FULL_DIR_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = le32_to_cpu(pFindData->FileNameLength);
-		cifsFile->srch_inf.resume_key = pFindData->FileIndex;
-	} else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
-		FILE_BOTH_DIRECTORY_INFO *pFindData =
-			(FILE_BOTH_DIRECTORY_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = le32_to_cpu(pFindData->FileNameLength);
-		cifsFile->srch_inf.resume_key = pFindData->FileIndex;
-	} else if (level == SMB_FIND_FILE_INFO_STANDARD) {
-		FIND_FILE_STANDARD_INFO *pFindData =
-			(FIND_FILE_STANDARD_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		/* one byte length, no name conversion */
-		len = (unsigned int)pFindData->FileNameLength;
-		cifsFile->srch_inf.resume_key = pFindData->ResumeKey;
-	} else {
-		cFYI(1, "Unknown findfirst level %d", level);
-		return -EINVAL;
+	rc = cifs_fill_dirent(&de, current_entry, file_info->srch_inf.info_level,
+			      file_info->srch_inf.unicode);
+	if (!rc) {
+		file_info->srch_inf.presume_name = de.name;
+		file_info->srch_inf.resume_name_len = de.namelen;
+		file_info->srch_inf.resume_key = de.resume_key;
 	}
-	cifsFile->srch_inf.resume_name_len = len;
-	cifsFile->srch_inf.presume_name = filename;
 	return rc;
 }
 
@@ -605,136 +608,70 @@ static int find_cifs_entry(const int xid, struct cifs_tcon *pTcon,
 	return rc;
 }
 
-/* inode num, inode type and filename returned */
-static int cifs_get_name_from_search_buf(struct qstr *pqst,
-	char *current_entry, __u16 level, unsigned int unicode,
-	struct cifs_sb_info *cifs_sb, unsigned int max_len, __u64 *pinum)
+static int cifs_filldir(char *find_entry, struct file *file, filldir_t filldir,
+		void *dirent, char *scratch_buf, unsigned int max_len)
 {
+	struct cifsFileInfo *file_info = file->private_data;
+	struct super_block *sb = file->f_path.dentry->d_sb;
+	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+	struct cifs_dirent de = { NULL, };
+	struct cifs_fattr fattr;
+	struct dentry *dentry;
+	struct qstr name;
 	int rc = 0;
-	unsigned int len = 0;
-	char *filename;
-	struct nls_table *nlt = cifs_sb->local_nls;
-
-	*pinum = 0;
-
-	if (level == SMB_FIND_FILE_UNIX) {
-		FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry;
-
-		filename = &pFindData->FileName[0];
-		if (unicode) {
-			len = cifs_unicode_bytelen(filename);
-		} else {
-			/* BB should we make this strnlen of PATH_MAX? */
-			len = strnlen(filename, PATH_MAX);
-		}
+	ino_t ino;
 
-		*pinum = le64_to_cpu(pFindData->basic.UniqueId);
-	} else if (level == SMB_FIND_FILE_DIRECTORY_INFO) {
-		FILE_DIRECTORY_INFO *pFindData =
-			(FILE_DIRECTORY_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = le32_to_cpu(pFindData->FileNameLength);
-	} else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
-		FILE_FULL_DIRECTORY_INFO *pFindData =
-			(FILE_FULL_DIRECTORY_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = le32_to_cpu(pFindData->FileNameLength);
-	} else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) {
-		SEARCH_ID_FULL_DIR_INFO *pFindData =
-			(SEARCH_ID_FULL_DIR_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = le32_to_cpu(pFindData->FileNameLength);
-		*pinum = le64_to_cpu(pFindData->UniqueId);
-	} else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
-		FILE_BOTH_DIRECTORY_INFO *pFindData =
-			(FILE_BOTH_DIRECTORY_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		len = le32_to_cpu(pFindData->FileNameLength);
-	} else if (level == SMB_FIND_FILE_INFO_STANDARD) {
-		FIND_FILE_STANDARD_INFO *pFindData =
-			(FIND_FILE_STANDARD_INFO *)current_entry;
-		filename = &pFindData->FileName[0];
-		/* one byte length, no name conversion */
-		len = (unsigned int)pFindData->FileNameLength;
-	} else {
-		cFYI(1, "Unknown findfirst level %d", level);
-		return -EINVAL;
-	}
+	rc = cifs_fill_dirent(&de, find_entry, file_info->srch_inf.info_level,
+			      file_info->srch_inf.unicode);
+	if (rc)
+		return rc;
 
-	if (len > max_len) {
-		cERROR(1, "bad search response length %d past smb end", len);
+	if (de.namelen > max_len) {
+		cERROR(1, "bad search response length %zd past smb end",
+			  de.namelen);
 		return -EINVAL;
 	}
 
-	if (unicode) {
-		pqst->len = cifs_from_ucs2((char *) pqst->name,
-					   (__le16 *) filename,
-					   UNICODE_NAME_MAX,
-					   min(len, max_len), nlt,
-					   cifs_sb->mnt_cifs_flags &
-						CIFS_MOUNT_MAP_SPECIAL_CHR);
-		pqst->len -= nls_nullsize(nlt);
-	} else {
-		pqst->name = filename;
-		pqst->len = len;
-	}
-	return rc;
-}
-
-static int cifs_filldir(char *pfindEntry, struct file *file, filldir_t filldir,
-			void *direntry, char *scratch_buf, unsigned int max_len)
-{
-	int rc = 0;
-	struct qstr qstring;
-	struct cifsFileInfo *pCifsF;
-	u64    inum;
-	ino_t  ino;
-	struct super_block *sb;
-	struct cifs_sb_info *cifs_sb;
-	struct dentry *tmp_dentry;
-	struct cifs_fattr fattr;
-
-	/* get filename and len into qstring */
-	/* get dentry */
-	/* decide whether to create and populate ionde */
-	if ((direntry == NULL) || (file == NULL))
-		return -EINVAL;
-
-	pCifsF = file->private_data;
-
-	if ((scratch_buf == NULL) || (pfindEntry == NULL) || (pCifsF == NULL))
-		return -ENOENT;
-
-	rc = cifs_entry_is_dot(pfindEntry, pCifsF);
 	/* skip . and .. since we added them first */
-	if (rc != 0)
+	if (cifs_entry_is_dot(&de, file_info->srch_inf.unicode))
 		return 0;
 
-	sb = file->f_path.dentry->d_sb;
-	cifs_sb = CIFS_SB(sb);
-
-	qstring.name = scratch_buf;
-	rc = cifs_get_name_from_search_buf(&qstring, pfindEntry,
-			pCifsF->srch_inf.info_level,
-			pCifsF->srch_inf.unicode, cifs_sb,
-			max_len, &inum /* returned */);
+	if (file_info->srch_inf.unicode) {
+		struct nls_table *nlt = cifs_sb->local_nls;
 
-	if (rc)
-		return rc;
+		name.name = scratch_buf;
+		name.len =
+			cifs_from_ucs2((char *)name.name, (__le16 *)de.name,
+				       UNICODE_NAME_MAX,
+				       min(de.namelen, (size_t)max_len), nlt,
+				       cifs_sb->mnt_cifs_flags &
+						CIFS_MOUNT_MAP_SPECIAL_CHR);
+		name.len -= nls_nullsize(nlt);
+	} else {
+		name.name = de.name;
+		name.len = de.namelen;
+	}
 
-	if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_UNIX)
+	switch (file_info->srch_inf.info_level) {
+	case SMB_FIND_FILE_UNIX:
 		cifs_unix_basic_to_fattr(&fattr,
-				 &((FILE_UNIX_INFO *) pfindEntry)->basic,
-				 cifs_sb);
-	else if (pCifsF->srch_inf.info_level == SMB_FIND_FILE_INFO_STANDARD)
-		cifs_std_info_to_fattr(&fattr, (FIND_FILE_STANDARD_INFO *)
-					pfindEntry, cifs_sb);
-	else
-		cifs_dir_info_to_fattr(&fattr, (FILE_DIRECTORY_INFO *)
-					pfindEntry, cifs_sb);
+					 &((FILE_UNIX_INFO *)find_entry)->basic,
+					 cifs_sb);
+		break;
+	case SMB_FIND_FILE_INFO_STANDARD:
+		cifs_std_info_to_fattr(&fattr,
+				       (FIND_FILE_STANDARD_INFO *)find_entry,
+				       cifs_sb);
+		break;
+	default:
+		cifs_dir_info_to_fattr(&fattr,
+				       (FILE_DIRECTORY_INFO *)find_entry,
+				       cifs_sb);
+		break;
+	}
 
-	if (inum && (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) {
-		fattr.cf_uniqueid = inum;
+	if (de.ino && (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) {
+		fattr.cf_uniqueid = de.ino;
 	} else {
 		fattr.cf_uniqueid = iunique(sb, ROOT_I);
 		cifs_autodisable_serverino(cifs_sb);
@@ -750,12 +687,12 @@ static int cifs_filldir(char *pfindEntry, struct file *file, filldir_t filldir,
 		fattr.cf_flags |= CIFS_FATTR_NEED_REVAL;
 
 	ino = cifs_uniqueid_to_ino_t(fattr.cf_uniqueid);
-	tmp_dentry = cifs_readdir_lookup(file->f_dentry, &qstring, &fattr);
+	dentry = cifs_readdir_lookup(file->f_dentry, &name, &fattr);
 
-	rc = filldir(direntry, qstring.name, qstring.len, file->f_pos,
-		     ino, fattr.cf_dtype);
+	rc = filldir(dirent, name.name, name.len, file->f_pos, ino,
+		     fattr.cf_dtype);
 
-	dput(tmp_dentry);
+	dput(dentry);
 	return rc;
 }
 

fs/cifs/smbencrypt.c

@@ -157,8 +157,14 @@ mdfour(unsigned char *md4_hash, unsigned char *link_str, int link_len)
 		cERROR(1, "%s: Could not init md4 shash\n", __func__);
 		goto mdfour_err;
 	}
-	crypto_shash_update(&sdescmd4->shash, link_str, link_len);
+	rc = crypto_shash_update(&sdescmd4->shash, link_str, link_len);
+	if (rc) {
+		cERROR(1, "%s: Could not update with link_str\n", __func__);
+		goto mdfour_err;
+	}
 	rc = crypto_shash_final(&sdescmd4->shash, md4_hash);
+	if (rc)
+		cERROR(1, "%s: Could not genereate md4 hash\n", __func__);
 
 mdfour_err:
 	crypto_free_shash(md4);