xref: /illumos-gate/usr/src/uts/common/fs/smbsrv/smb_create.c (revision 94047d49916b669576decf2f622a1ee718646882)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
23  * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
24  */
25 
26 #include <smbsrv/smb_kproto.h>
27 
28 #define	SMB_CREATE_NAMEBUF_SZ	16
29 
30 /*
31  * Create a new file, or truncate an existing file to zero length,
32  * open the file and return a fid.  The file is specified using a
33  * fully qualified name relative to the tree.
34  */
35 smb_sdrc_t
smb_pre_create(smb_request_t * sr)36 smb_pre_create(smb_request_t *sr)
37 {
38 	struct open_param *op = &sr->arg.open;
39 	int rc;
40 
41 	bzero(op, sizeof (sr->arg.open));
42 
43 	rc = smbsr_decode_vwv(sr, "wl", &op->dattr, &op->mtime.tv_sec);
44 	if (rc == 0)
45 		rc = smbsr_decode_data(sr, "%S", sr, &op->fqi.fq_path.pn_path);
46 
47 	op->create_disposition = FILE_OVERWRITE_IF;
48 	op->create_options = FILE_NON_DIRECTORY_FILE;
49 
50 	DTRACE_SMB_START(op__Create, smb_request_t *, sr); /* arg.open */
51 
52 	return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
53 }
54 
55 void
smb_post_create(smb_request_t * sr)56 smb_post_create(smb_request_t *sr)
57 {
58 	DTRACE_SMB_DONE(op__Create, smb_request_t *, sr);
59 }
60 
61 smb_sdrc_t
smb_com_create(smb_request_t * sr)62 smb_com_create(smb_request_t *sr)
63 {
64 	if (smb_common_create(sr) != NT_STATUS_SUCCESS)
65 		return (SDRC_ERROR);
66 
67 	if (smbsr_encode_result(sr, 1, 0, "bww", 1, sr->smb_fid, 0))
68 		return (SDRC_ERROR);
69 
70 	return (SDRC_SUCCESS);
71 }
72 
73 /*
74  * Create a new file and return a fid.  The file is specified using
75  * a fully qualified name relative to the tree.
76  */
77 smb_sdrc_t
smb_pre_create_new(smb_request_t * sr)78 smb_pre_create_new(smb_request_t *sr)
79 {
80 	struct open_param *op = &sr->arg.open;
81 	int rc;
82 
83 	bzero(op, sizeof (sr->arg.open));
84 
85 	rc = smbsr_decode_vwv(sr, "wl", &op->dattr, &op->mtime.tv_sec);
86 	if (rc == 0)
87 		rc = smbsr_decode_data(sr, "%S", sr, &op->fqi.fq_path.pn_path);
88 
89 	op->create_disposition = FILE_CREATE;
90 
91 	DTRACE_SMB_START(op__CreateNew, smb_request_t *, sr); /* arg.open */
92 
93 	return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
94 }
95 
96 void
smb_post_create_new(smb_request_t * sr)97 smb_post_create_new(smb_request_t *sr)
98 {
99 	DTRACE_SMB_DONE(op__CreateNew, smb_request_t *, sr);
100 }
101 
102 smb_sdrc_t
smb_com_create_new(smb_request_t * sr)103 smb_com_create_new(smb_request_t *sr)
104 {
105 	if (smb_common_create(sr) != NT_STATUS_SUCCESS)
106 		return (SDRC_ERROR);
107 
108 	if (smbsr_encode_result(sr, 1, 0, "bww", 1, sr->smb_fid, 0))
109 		return (SDRC_ERROR);
110 
111 	return (SDRC_SUCCESS);
112 }
113 
114 /*
115  * Create a unique file in the specified directory relative to the
116  * current tree.  No attributes are specified.
117  */
118 smb_sdrc_t
smb_pre_create_temporary(smb_request_t * sr)119 smb_pre_create_temporary(smb_request_t *sr)
120 {
121 	struct open_param *op = &sr->arg.open;
122 	uint16_t reserved;
123 	int rc;
124 
125 	bzero(op, sizeof (sr->arg.open));
126 
127 	rc = smbsr_decode_vwv(sr, "wl", &reserved, &op->mtime.tv_sec);
128 	if (rc == 0)
129 		rc = smbsr_decode_data(sr, "%S", sr, &op->fqi.fq_path.pn_path);
130 
131 	op->create_disposition = FILE_CREATE;
132 
133 	DTRACE_SMB_START(op__CreateTemporary, smb_request_t *, sr);
134 
135 	return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
136 }
137 
138 void
smb_post_create_temporary(smb_request_t * sr)139 smb_post_create_temporary(smb_request_t *sr)
140 {
141 	DTRACE_SMB_DONE(op__CreateTemporary, smb_request_t *, sr);
142 }
143 
144 smb_sdrc_t
smb_com_create_temporary(smb_request_t * sr)145 smb_com_create_temporary(smb_request_t *sr)
146 {
147 	static uint16_t tmp_id = 10000;
148 	struct open_param *op = &sr->arg.open;
149 	char name[SMB_CREATE_NAMEBUF_SZ];
150 	char *buf;
151 	uint16_t bcc;
152 
153 	++tmp_id;
154 	bcc = 1; /* null terminator */
155 	bcc += snprintf(name, SMB_CREATE_NAMEBUF_SZ, "tt%05d.tmp", tmp_id);
156 
157 	buf = smb_srm_zalloc(sr, MAXPATHLEN);
158 	(void) snprintf(buf, MAXPATHLEN, "%s\\%s",
159 	    op->fqi.fq_path.pn_path, name);
160 	op->fqi.fq_path.pn_path = buf;
161 
162 	if (smb_common_create(sr) != NT_STATUS_SUCCESS)
163 		return (SDRC_ERROR);
164 
165 	if (smbsr_encode_result(sr, 1, VAR_BCC, "bww%s", 1, sr->smb_fid,
166 	    VAR_BCC, sr, name))
167 		return (SDRC_ERROR);
168 
169 	return (SDRC_SUCCESS);
170 }
171 
172 /*
173  * Common create file function.  The file is opened in compatibility
174  * mode with read/write access.
175  */
176 uint32_t
smb_common_create(smb_request_t * sr)177 smb_common_create(smb_request_t *sr)
178 {
179 	struct open_param *op = &sr->arg.open;
180 	uint32_t status;
181 
182 	if ((op->mtime.tv_sec != 0) && (op->mtime.tv_sec != UINT_MAX))
183 		op->mtime.tv_sec = smb_time_local_to_gmt(sr, op->mtime.tv_sec);
184 	op->mtime.tv_nsec = 0;
185 	op->dsize = 0;
186 	op->omode = SMB_DA_ACCESS_READ_WRITE | SMB_DA_SHARE_COMPATIBILITY;
187 	op->desired_access = smb_omode_to_amask(op->omode);
188 	op->share_access = smb_denymode_to_sharemode(op->omode,
189 	    op->fqi.fq_path.pn_path);
190 
191 	if (sr->smb_flg & SMB_FLAGS_OPLOCK) {
192 		if (sr->smb_flg & SMB_FLAGS_OPLOCK_NOTIFY_ANY)
193 			op->op_oplock_level = SMB_OPLOCK_BATCH;
194 		else
195 			op->op_oplock_level = SMB_OPLOCK_EXCLUSIVE;
196 	} else {
197 		op->op_oplock_level = SMB_OPLOCK_NONE;
198 	}
199 
200 	status = smb_common_open(sr);
201 	if (status == 0 && op->op_oplock_level != SMB_OPLOCK_NONE) {
202 		/* Oplock req. in op->op_oplock_level etc. */
203 		smb1_oplock_acquire(sr, B_FALSE);
204 	}
205 
206 	if (op->op_oplock_level == SMB_OPLOCK_NONE) {
207 		sr->smb_flg &=
208 		    ~(SMB_FLAGS_OPLOCK | SMB_FLAGS_OPLOCK_NOTIFY_ANY);
209 	}
210 
211 	if (status)
212 		smbsr_status(sr, status, 0, 0);
213 
214 	return (status);
215 }
216