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be4cb9e3 PS |
1 | /* |
2 | * fs/cifs/smb2inode.c | |
3 | * | |
4 | * Copyright (C) International Business Machines Corp., 2002, 2011 | |
5 | * Etersoft, 2012 | |
6 | * Author(s): Pavel Shilovsky (pshilovsky@samba.org), | |
7 | * Steve French (sfrench@us.ibm.com) | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | #include <linux/fs.h> | |
24 | #include <linux/stat.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/pagemap.h> | |
27 | #include <asm/div64.h> | |
28 | #include "cifsfs.h" | |
29 | #include "cifspdu.h" | |
30 | #include "cifsglob.h" | |
31 | #include "cifsproto.h" | |
32 | #include "cifs_debug.h" | |
33 | #include "cifs_fs_sb.h" | |
34 | #include "cifs_unicode.h" | |
35 | #include "fscache.h" | |
36 | #include "smb2glob.h" | |
37 | #include "smb2pdu.h" | |
38 | #include "smb2proto.h" | |
39 | ||
40 | static int | |
41 | smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon, | |
42 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
43 | __u32 desired_access, __u32 create_disposition, | |
ca81983f | 44 | __u32 create_options, void *data, int command) |
be4cb9e3 PS |
45 | { |
46 | int rc, tmprc = 0; | |
be4cb9e3 | 47 | __le16 *utf16_path; |
2e44b288 | 48 | __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
064f6047 PS |
49 | struct cifs_open_parms oparms; |
50 | struct cifs_fid fid; | |
be4cb9e3 PS |
51 | |
52 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); | |
53 | if (!utf16_path) | |
54 | return -ENOMEM; | |
55 | ||
064f6047 PS |
56 | oparms.tcon = tcon; |
57 | oparms.desired_access = desired_access; | |
58 | oparms.disposition = create_disposition; | |
59 | oparms.create_options = create_options; | |
60 | oparms.fid = &fid; | |
9cbc0b73 | 61 | oparms.reconnect = false; |
064f6047 | 62 | |
b42bf888 | 63 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL); |
be4cb9e3 PS |
64 | if (rc) { |
65 | kfree(utf16_path); | |
66 | return rc; | |
67 | } | |
68 | ||
69 | switch (command) { | |
70 | case SMB2_OP_DELETE: | |
71 | break; | |
72 | case SMB2_OP_QUERY_INFO: | |
064f6047 PS |
73 | tmprc = SMB2_query_info(xid, tcon, fid.persistent_fid, |
74 | fid.volatile_fid, | |
be4cb9e3 PS |
75 | (struct smb2_file_all_info *)data); |
76 | break; | |
77 | case SMB2_OP_MKDIR: | |
78 | /* | |
79 | * Directories are created through parameters in the | |
80 | * SMB2_open() call. | |
81 | */ | |
82 | break; | |
35143eb5 | 83 | case SMB2_OP_RENAME: |
064f6047 PS |
84 | tmprc = SMB2_rename(xid, tcon, fid.persistent_fid, |
85 | fid.volatile_fid, (__le16 *)data); | |
35143eb5 | 86 | break; |
568798cc | 87 | case SMB2_OP_HARDLINK: |
064f6047 PS |
88 | tmprc = SMB2_set_hardlink(xid, tcon, fid.persistent_fid, |
89 | fid.volatile_fid, (__le16 *)data); | |
568798cc | 90 | break; |
c839ff24 | 91 | case SMB2_OP_SET_EOF: |
064f6047 PS |
92 | tmprc = SMB2_set_eof(xid, tcon, fid.persistent_fid, |
93 | fid.volatile_fid, current->tgid, | |
94 | (__le64 *)data); | |
c839ff24 | 95 | break; |
1feeaac7 | 96 | case SMB2_OP_SET_INFO: |
064f6047 PS |
97 | tmprc = SMB2_set_info(xid, tcon, fid.persistent_fid, |
98 | fid.volatile_fid, | |
1feeaac7 PS |
99 | (FILE_BASIC_INFO *)data); |
100 | break; | |
be4cb9e3 | 101 | default: |
f96637be | 102 | cifs_dbg(VFS, "Invalid command\n"); |
be4cb9e3 PS |
103 | break; |
104 | } | |
105 | ||
064f6047 | 106 | rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
be4cb9e3 PS |
107 | if (tmprc) |
108 | rc = tmprc; | |
109 | kfree(utf16_path); | |
110 | return rc; | |
111 | } | |
112 | ||
f0df737e | 113 | void |
be4cb9e3 PS |
114 | move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src) |
115 | { | |
116 | memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src); | |
117 | dst->CurrentByteOffset = src->CurrentByteOffset; | |
118 | dst->Mode = src->Mode; | |
119 | dst->AlignmentRequirement = src->AlignmentRequirement; | |
120 | dst->IndexNumber1 = 0; /* we don't use it */ | |
121 | } | |
122 | ||
123 | int | |
124 | smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, | |
125 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
126 | FILE_ALL_INFO *data, bool *adjust_tz) | |
127 | { | |
128 | int rc; | |
129 | struct smb2_file_all_info *smb2_data; | |
130 | ||
131 | *adjust_tz = false; | |
132 | ||
133 | smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2, | |
134 | GFP_KERNEL); | |
135 | if (smb2_data == NULL) | |
136 | return -ENOMEM; | |
137 | ||
138 | rc = smb2_open_op_close(xid, tcon, cifs_sb, full_path, | |
b42bf888 PS |
139 | FILE_READ_ATTRIBUTES, FILE_OPEN, |
140 | OPEN_REPARSE_POINT, smb2_data, | |
ca81983f | 141 | SMB2_OP_QUERY_INFO); |
be4cb9e3 PS |
142 | if (rc) |
143 | goto out; | |
144 | ||
145 | move_smb2_info_to_cifs(data, smb2_data); | |
146 | out: | |
147 | kfree(smb2_data); | |
148 | return rc; | |
149 | } | |
a0e73183 PS |
150 | |
151 | int | |
152 | smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, | |
153 | struct cifs_sb_info *cifs_sb) | |
154 | { | |
155 | return smb2_open_op_close(xid, tcon, cifs_sb, name, | |
ca81983f | 156 | FILE_WRITE_ATTRIBUTES, FILE_CREATE, |
a0e73183 PS |
157 | CREATE_NOT_FILE, NULL, SMB2_OP_MKDIR); |
158 | } | |
159 | ||
160 | void | |
161 | smb2_mkdir_setinfo(struct inode *inode, const char *name, | |
162 | struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon, | |
163 | const unsigned int xid) | |
164 | { | |
165 | FILE_BASIC_INFO data; | |
166 | struct cifsInodeInfo *cifs_i; | |
167 | u32 dosattrs; | |
168 | int tmprc; | |
169 | ||
170 | memset(&data, 0, sizeof(data)); | |
171 | cifs_i = CIFS_I(inode); | |
172 | dosattrs = cifs_i->cifsAttrs | ATTR_READONLY; | |
173 | data.Attributes = cpu_to_le32(dosattrs); | |
174 | tmprc = smb2_open_op_close(xid, tcon, cifs_sb, name, | |
ca81983f | 175 | FILE_WRITE_ATTRIBUTES, FILE_CREATE, |
a0e73183 PS |
176 | CREATE_NOT_FILE, &data, SMB2_OP_SET_INFO); |
177 | if (tmprc == 0) | |
178 | cifs_i->cifsAttrs = dosattrs; | |
179 | } | |
1a500f01 PS |
180 | |
181 | int | |
182 | smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, | |
183 | struct cifs_sb_info *cifs_sb) | |
184 | { | |
185 | return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN, | |
ca81983f | 186 | CREATE_NOT_FILE | CREATE_DELETE_ON_CLOSE, |
1a500f01 PS |
187 | NULL, SMB2_OP_DELETE); |
188 | } | |
cbe6f439 PS |
189 | |
190 | int | |
191 | smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name, | |
192 | struct cifs_sb_info *cifs_sb) | |
193 | { | |
194 | return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN, | |
b42bf888 PS |
195 | CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT, |
196 | NULL, SMB2_OP_DELETE); | |
cbe6f439 | 197 | } |
35143eb5 | 198 | |
568798cc PS |
199 | static int |
200 | smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon, | |
201 | const char *from_name, const char *to_name, | |
202 | struct cifs_sb_info *cifs_sb, __u32 access, int command) | |
35143eb5 PS |
203 | { |
204 | __le16 *smb2_to_name = NULL; | |
205 | int rc; | |
206 | ||
207 | smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb); | |
208 | if (smb2_to_name == NULL) { | |
209 | rc = -ENOMEM; | |
210 | goto smb2_rename_path; | |
211 | } | |
212 | ||
568798cc | 213 | rc = smb2_open_op_close(xid, tcon, cifs_sb, from_name, access, |
ca81983f | 214 | FILE_OPEN, 0, smb2_to_name, command); |
35143eb5 PS |
215 | smb2_rename_path: |
216 | kfree(smb2_to_name); | |
217 | return rc; | |
218 | } | |
568798cc PS |
219 | |
220 | int | |
221 | smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon, | |
222 | const char *from_name, const char *to_name, | |
223 | struct cifs_sb_info *cifs_sb) | |
224 | { | |
225 | return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, | |
226 | DELETE, SMB2_OP_RENAME); | |
227 | } | |
228 | ||
229 | int | |
230 | smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon, | |
231 | const char *from_name, const char *to_name, | |
232 | struct cifs_sb_info *cifs_sb) | |
233 | { | |
234 | return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, | |
235 | FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK); | |
236 | } | |
c839ff24 PS |
237 | |
238 | int | |
239 | smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon, | |
240 | const char *full_path, __u64 size, | |
241 | struct cifs_sb_info *cifs_sb, bool set_alloc) | |
242 | { | |
243 | __le64 eof = cpu_to_le64(size); | |
244 | return smb2_open_op_close(xid, tcon, cifs_sb, full_path, | |
ca81983f | 245 | FILE_WRITE_DATA, FILE_OPEN, 0, &eof, |
c839ff24 PS |
246 | SMB2_OP_SET_EOF); |
247 | } | |
1feeaac7 PS |
248 | |
249 | int | |
250 | smb2_set_file_info(struct inode *inode, const char *full_path, | |
251 | FILE_BASIC_INFO *buf, const unsigned int xid) | |
252 | { | |
253 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
254 | struct tcon_link *tlink; | |
255 | int rc; | |
256 | ||
257 | tlink = cifs_sb_tlink(cifs_sb); | |
258 | if (IS_ERR(tlink)) | |
259 | return PTR_ERR(tlink); | |
260 | rc = smb2_open_op_close(xid, tlink_tcon(tlink), cifs_sb, full_path, | |
ca81983f | 261 | FILE_WRITE_ATTRIBUTES, FILE_OPEN, 0, buf, |
1feeaac7 PS |
262 | SMB2_OP_SET_INFO); |
263 | cifs_put_tlink(tlink); | |
264 | return rc; | |
265 | } |