[9/9] cifs: change SMB2_OP_RENAME and SMB2_OP_HARDLINK to use compounding
diff mbox series

Message ID 20180820033920.31435-10-lsahlber@redhat.com
State New
Headers show
Series
  • [1/9] cifs: add a smb2_compound_op and change QUERY_INFO to use it
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Commit Message

Ronnie Sahlberg Aug. 20, 2018, 3:39 a.m. UTC
Get rid of smb2_open_op_close() as all operations are now migrated
to smb2_compound_op().

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
---
 fs/cifs/smb2glob.h  |   2 +-
 fs/cifs/smb2inode.c | 159 ++++++++++++++++++++++++++--------------------------
 fs/cifs/smb2pdu.c   |  64 ---------------------
 fs/cifs/smb2proto.h |   6 --
 4 files changed, 80 insertions(+), 151 deletions(-)

Patch
diff mbox series

diff --git a/fs/cifs/smb2glob.h b/fs/cifs/smb2glob.h
index 0ffa18094335..dd10f0ce4cd5 100644
--- a/fs/cifs/smb2glob.h
+++ b/fs/cifs/smb2glob.h
@@ -33,7 +33,7 @@ 
 
 /*
  * Identifiers for functions that use the open, operation, close pattern
- * in smb2inode.c:smb2_open_op_close()
+ * in smb2inode.c:smb2_compound_op()
  */
 #define SMB2_OP_SET_DELETE 1
 #define SMB2_OP_SET_INFO 2
diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index f802e12e4138..cc0173c7be3a 100644
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -41,7 +41,7 @@  static int
 smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
 		 struct cifs_sb_info *cifs_sb, const char *full_path,
 		 __u32 desired_access, __u32 create_disposition,
-		 __u32 create_options, void *data, int command)
+		 __u32 create_options, void *ptr, int command)
 {
 	int rc;
 	__le16 *utf16_path = NULL;
@@ -56,12 +56,16 @@  smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
 	struct kvec rsp_iov[3];
 	struct kvec open_iov[5]; /* 4 + potential padding. */
 	struct kvec qi_iov[1];
-	struct kvec si_iov[2];  /* 1 + potential padding. */
+	struct kvec si_iov[3];  /* 2 + potential padding. */
 	struct kvec close_iov[1];
 	struct smb2_query_info_rsp *qi_rsp = NULL;
 	int flags = 0;
 	__u8 delete_pending = 1;
-	unsigned int size;
+	unsigned int size[2];
+	void *data[2];
+	struct smb2_file_rename_info rename_info;
+	struct smb2_file_link_info link_info;
+	int len;
 
 	if (smb3_encryption_required(tcon))
 		flags |= CIFS_TRANSFORM_REQ;
@@ -121,13 +125,13 @@  smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
 		rqst[num_rqst].rq_iov = si_iov;
 		rqst[num_rqst].rq_nvec = 1;
 
-		data = &delete_pending;
-		size = 1; /* sizeof __u8 */
+		data[0] = &delete_pending;
+		size[0] = 1; /* sizeof __u8 */
 
 		rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
 					COMPOUND_FID, current->tgid,
 					FILE_DISPOSITION_INFORMATION,
-					SMB2_O_INFO_FILE, 0, &data, &size);
+					SMB2_O_INFO_FILE, 0, data, size);
 		smb2_set_next_command(server, &rqst[num_rqst]);
 		smb2_set_related(&rqst[num_rqst++]);
 		break;
@@ -136,13 +140,13 @@  smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
 		rqst[num_rqst].rq_iov = si_iov;
 		rqst[num_rqst].rq_nvec = 1;
 
-		/* data already contain eof */
-		size = 8; /* sizeof __le64 */
+		data[0] = ptr;
+		size[0] = 8; /* sizeof __le64 */
 
 		rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
 					COMPOUND_FID, current->tgid,
 					FILE_END_OF_FILE_INFORMATION,
-					SMB2_O_INFO_FILE, 0, &data, &size);
+					SMB2_O_INFO_FILE, 0, data, size);
 		smb2_set_next_command(server, &rqst[num_rqst]);
 		smb2_set_related(&rqst[num_rqst++]);
 		break;
@@ -151,11 +155,70 @@  smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
 		rqst[num_rqst].rq_iov = si_iov;
 		rqst[num_rqst].rq_nvec = 1;
 
-		size = sizeof(FILE_BASIC_INFO);
+		data[0] = ptr;
+		size[0] = sizeof(FILE_BASIC_INFO);
+
 		rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
 					COMPOUND_FID, current->tgid,
 					FILE_BASIC_INFORMATION,
-					SMB2_O_INFO_FILE, 0, &data, &size);
+					SMB2_O_INFO_FILE, 0, data, size);
+		smb2_set_next_command(server, &rqst[num_rqst]);
+		smb2_set_related(&rqst[num_rqst++]);
+		break;
+	case SMB2_OP_RENAME:
+		memset(&si_iov, 0, sizeof(si_iov));
+		rqst[num_rqst].rq_iov = si_iov;
+		rqst[num_rqst].rq_nvec = 2;
+
+		len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
+
+		/*
+		 * 1 = replace existing target with new
+		 */
+		rename_info.ReplaceIfExists = 1;
+		/*
+		 * 0 = fail if target already exists
+		 */
+		rename_info.RootDirectory = 0;
+		/*
+		 * MBZ for network ops (why does spec say?)
+		 */
+		rename_info.FileNameLength = cpu_to_le32(len);
+
+		data[0] = &rename_info;
+		size[0] = sizeof(struct smb2_file_rename_info);
+
+		data[1] = (__le16 *)ptr;
+		size[1] = len + 2 /* null */;
+
+		rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
+					COMPOUND_FID, current->tgid,
+					FILE_RENAME_INFORMATION,
+					SMB2_O_INFO_FILE, 0, data, size);
+		smb2_set_next_command(server, &rqst[num_rqst]);
+		smb2_set_related(&rqst[num_rqst++]);
+		break;
+	case SMB2_OP_HARDLINK:
+		memset(&si_iov, 0, sizeof(si_iov));
+		rqst[num_rqst].rq_iov = si_iov;
+		rqst[num_rqst].rq_nvec = 2;
+
+		len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
+
+		link_info.ReplaceIfExists = 0;
+		link_info.RootDirectory = 0;
+		link_info.FileNameLength = cpu_to_le32(len);
+
+		data[0] = &link_info;
+		size[0] = sizeof(struct smb2_file_link_info);
+
+		data[1] = (__le16 *)ptr;
+		size[1] = len + 2 /* null */;
+
+		rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
+					COMPOUND_FID, current->tgid,
+					FILE_LINK_INFORMATION,
+					SMB2_O_INFO_FILE, 0, data, size);
 		smb2_set_next_command(server, &rqst[num_rqst]);
 		smb2_set_related(&rqst[num_rqst++]);
 		break;
@@ -189,7 +252,7 @@  smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
 				le16_to_cpu(qi_rsp->OutputBufferOffset),
 				le32_to_cpu(qi_rsp->OutputBufferLength),
 				&rsp_iov[1], sizeof(struct smb2_file_all_info),
-				data);
+				ptr);
 		}
 		SMB2_query_info_free(&rqst[1]);
 		SMB2_close_free(&rqst[2]);
@@ -198,6 +261,8 @@  smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
 	case SMB2_OP_MKDIR:
 		SMB2_close_free(&rqst[1]);
 		break;
+	case SMB2_OP_HARDLINK:
+	case SMB2_OP_RENAME:
 	case SMB2_OP_RMDIR:
 	case SMB2_OP_SET_EOF:
 	case SMB2_OP_SET_INFO:
@@ -211,72 +276,6 @@  smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
 	return rc;
 }
 
-static int
-smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
-		   struct cifs_sb_info *cifs_sb, const char *full_path,
-		   __u32 desired_access, __u32 create_disposition,
-		   __u32 create_options, void *data, int command)
-{
-	int rc, tmprc = 0;
-	__le16 *utf16_path = NULL;
-	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
-	struct cifs_open_parms oparms;
-	struct cifs_fid fid;
-	bool use_cached_root_handle = false;
-
-	if ((strcmp(full_path, "") == 0) && (create_options == 0) &&
-	    (desired_access == FILE_READ_ATTRIBUTES) &&
-	    (create_disposition == FILE_OPEN) &&
-	    (tcon->nohandlecache == false)) {
-		rc = open_shroot(xid, tcon, &fid);
-		if (rc == 0)
-			use_cached_root_handle = true;
-	}
-
-	if (use_cached_root_handle == false) {
-		utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
-		if (!utf16_path)
-			return -ENOMEM;
-
-		oparms.tcon = tcon;
-		oparms.desired_access = desired_access;
-		oparms.disposition = create_disposition;
-		oparms.create_options = create_options;
-		oparms.fid = &fid;
-		oparms.reconnect = false;
-
-		rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
-			       NULL);
-		if (rc) {
-			kfree(utf16_path);
-			return rc;
-		}
-	}
-
-	switch (command) {
-	case SMB2_OP_RENAME:
-		tmprc = SMB2_rename(xid, tcon, fid.persistent_fid,
-				    fid.volatile_fid, (__le16 *)data);
-		break;
-	case SMB2_OP_HARDLINK:
-		tmprc = SMB2_set_hardlink(xid, tcon, fid.persistent_fid,
-					  fid.volatile_fid, (__le16 *)data);
-		break;
-	default:
-		cifs_dbg(VFS, "Invalid command\n");
-		break;
-	}
-
-	if (use_cached_root_handle)
-		close_shroot(&tcon->crfid);
-	else
-		rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
-	if (tmprc)
-		rc = tmprc;
-	kfree(utf16_path);
-	return rc;
-}
-
 void
 move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
 {
@@ -385,8 +384,8 @@  smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
 		goto smb2_rename_path;
 	}
 
-	rc = smb2_open_op_close(xid, tcon, cifs_sb, from_name, access,
-				FILE_OPEN, 0, smb2_to_name, command);
+	rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
+			      FILE_OPEN, 0, smb2_to_name, command);
 smb2_rename_path:
 	kfree(smb2_to_name);
 	return rc;
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index cf8d2f7d097c..88063ab36a6a 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -3852,70 +3852,6 @@  send_set_info(const unsigned int xid, struct cifs_tcon *tcon,
 }
 
 int
-SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon,
-	    u64 persistent_fid, u64 volatile_fid, __le16 *target_file)
-{
-	struct smb2_file_rename_info info;
-	void **data;
-	unsigned int size[2];
-	int rc;
-	int len = (2 * UniStrnlen((wchar_t *)target_file, PATH_MAX));
-
-	data = kmalloc_array(2, sizeof(void *), GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
-
-	info.ReplaceIfExists = 1; /* 1 = replace existing target with new */
-			      /* 0 = fail if target already exists */
-	info.RootDirectory = 0;  /* MBZ for network ops (why does spec say?) */
-	info.FileNameLength = cpu_to_le32(len);
-
-	data[0] = &info;
-	size[0] = sizeof(struct smb2_file_rename_info);
-
-	data[1] = target_file;
-	size[1] = len + 2 /* null */;
-
-	rc = send_set_info(xid, tcon, persistent_fid, volatile_fid,
-		current->tgid, FILE_RENAME_INFORMATION, SMB2_O_INFO_FILE,
-		0, 2, data, size);
-	kfree(data);
-	return rc;
-}
-
-int
-SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
-		  u64 persistent_fid, u64 volatile_fid, __le16 *target_file)
-{
-	struct smb2_file_link_info info;
-	void **data;
-	unsigned int size[2];
-	int rc;
-	int len = (2 * UniStrnlen((wchar_t *)target_file, PATH_MAX));
-
-	data = kmalloc_array(2, sizeof(void *), GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
-
-	info.ReplaceIfExists = 0; /* 1 = replace existing link with new */
-			      /* 0 = fail if link already exists */
-	info.RootDirectory = 0;  /* MBZ for network ops (why does spec say?) */
-	info.FileNameLength = cpu_to_le32(len);
-
-	data[0] = &info;
-	size[0] = sizeof(struct smb2_file_link_info);
-
-	data[1] = target_file;
-	size[1] = len + 2 /* null */;
-
-	rc = send_set_info(xid, tcon, persistent_fid, volatile_fid,
-			current->tgid, FILE_LINK_INFORMATION, SMB2_O_INFO_FILE,
-			0, 2, data, size);
-	kfree(data);
-	return rc;
-}
-
-int
 SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
 	     u64 volatile_fid, u32 pid, __le64 *eof)
 {
diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index 91c261a71059..48c5c61702f1 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -182,12 +182,6 @@  extern int SMB2_echo(struct TCP_Server_Info *server);
 extern int SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
 				u64 persistent_fid, u64 volatile_fid, int index,
 				struct cifs_search_info *srch_inf);
-extern int SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon,
-		       u64 persistent_fid, u64 volatile_fid,
-		       __le16 *target_file);
-extern int SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
-			     u64 persistent_fid, u64 volatile_fid,
-			     __le16 *target_file);
 extern int SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon,
 			u64 persistent_fid, u64 volatile_fid, u32 pid,
 			__le64 *eof);