Commit | Line | Data |
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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; | |
61 | ||
62 | rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL); | |
be4cb9e3 PS |
63 | if (rc) { |
64 | kfree(utf16_path); | |
65 | return rc; | |
66 | } | |
67 | ||
68 | switch (command) { | |
69 | case SMB2_OP_DELETE: | |
70 | break; | |
71 | case SMB2_OP_QUERY_INFO: | |
064f6047 PS |
72 | tmprc = SMB2_query_info(xid, tcon, fid.persistent_fid, |
73 | fid.volatile_fid, | |
be4cb9e3 PS |
74 | (struct smb2_file_all_info *)data); |
75 | break; | |
76 | case SMB2_OP_MKDIR: | |
77 | /* | |
78 | * Directories are created through parameters in the | |
79 | * SMB2_open() call. | |
80 | */ | |
81 | break; | |
35143eb5 | 82 | case SMB2_OP_RENAME: |
064f6047 PS |
83 | tmprc = SMB2_rename(xid, tcon, fid.persistent_fid, |
84 | fid.volatile_fid, (__le16 *)data); | |
35143eb5 | 85 | break; |
568798cc | 86 | case SMB2_OP_HARDLINK: |
064f6047 PS |
87 | tmprc = SMB2_set_hardlink(xid, tcon, fid.persistent_fid, |
88 | fid.volatile_fid, (__le16 *)data); | |
568798cc | 89 | break; |
c839ff24 | 90 | case SMB2_OP_SET_EOF: |
064f6047 PS |
91 | tmprc = SMB2_set_eof(xid, tcon, fid.persistent_fid, |
92 | fid.volatile_fid, current->tgid, | |
93 | (__le64 *)data); | |
c839ff24 | 94 | break; |
1feeaac7 | 95 | case SMB2_OP_SET_INFO: |
064f6047 PS |
96 | tmprc = SMB2_set_info(xid, tcon, fid.persistent_fid, |
97 | fid.volatile_fid, | |
1feeaac7 PS |
98 | (FILE_BASIC_INFO *)data); |
99 | break; | |
be4cb9e3 | 100 | default: |
f96637be | 101 | cifs_dbg(VFS, "Invalid command\n"); |
be4cb9e3 PS |
102 | break; |
103 | } | |
104 | ||
064f6047 | 105 | rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
be4cb9e3 PS |
106 | if (tmprc) |
107 | rc = tmprc; | |
108 | kfree(utf16_path); | |
109 | return rc; | |
110 | } | |
111 | ||
f0df737e | 112 | void |
be4cb9e3 PS |
113 | move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src) |
114 | { | |
115 | memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src); | |
116 | dst->CurrentByteOffset = src->CurrentByteOffset; | |
117 | dst->Mode = src->Mode; | |
118 | dst->AlignmentRequirement = src->AlignmentRequirement; | |
119 | dst->IndexNumber1 = 0; /* we don't use it */ | |
120 | } | |
121 | ||
122 | int | |
123 | smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, | |
124 | struct cifs_sb_info *cifs_sb, const char *full_path, | |
125 | FILE_ALL_INFO *data, bool *adjust_tz) | |
126 | { | |
127 | int rc; | |
128 | struct smb2_file_all_info *smb2_data; | |
129 | ||
130 | *adjust_tz = false; | |
131 | ||
132 | smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2, | |
133 | GFP_KERNEL); | |
134 | if (smb2_data == NULL) | |
135 | return -ENOMEM; | |
136 | ||
137 | rc = smb2_open_op_close(xid, tcon, cifs_sb, full_path, | |
ca81983f PS |
138 | FILE_READ_ATTRIBUTES, FILE_OPEN, 0, smb2_data, |
139 | SMB2_OP_QUERY_INFO); | |
be4cb9e3 PS |
140 | if (rc) |
141 | goto out; | |
142 | ||
143 | move_smb2_info_to_cifs(data, smb2_data); | |
144 | out: | |
145 | kfree(smb2_data); | |
146 | return rc; | |
147 | } | |
a0e73183 PS |
148 | |
149 | int | |
150 | smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, | |
151 | struct cifs_sb_info *cifs_sb) | |
152 | { | |
153 | return smb2_open_op_close(xid, tcon, cifs_sb, name, | |
ca81983f | 154 | FILE_WRITE_ATTRIBUTES, FILE_CREATE, |
a0e73183 PS |
155 | CREATE_NOT_FILE, NULL, SMB2_OP_MKDIR); |
156 | } | |
157 | ||
158 | void | |
159 | smb2_mkdir_setinfo(struct inode *inode, const char *name, | |
160 | struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon, | |
161 | const unsigned int xid) | |
162 | { | |
163 | FILE_BASIC_INFO data; | |
164 | struct cifsInodeInfo *cifs_i; | |
165 | u32 dosattrs; | |
166 | int tmprc; | |
167 | ||
168 | memset(&data, 0, sizeof(data)); | |
169 | cifs_i = CIFS_I(inode); | |
170 | dosattrs = cifs_i->cifsAttrs | ATTR_READONLY; | |
171 | data.Attributes = cpu_to_le32(dosattrs); | |
172 | tmprc = smb2_open_op_close(xid, tcon, cifs_sb, name, | |
ca81983f | 173 | FILE_WRITE_ATTRIBUTES, FILE_CREATE, |
a0e73183 PS |
174 | CREATE_NOT_FILE, &data, SMB2_OP_SET_INFO); |
175 | if (tmprc == 0) | |
176 | cifs_i->cifsAttrs = dosattrs; | |
177 | } | |
1a500f01 PS |
178 | |
179 | int | |
180 | smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, | |
181 | struct cifs_sb_info *cifs_sb) | |
182 | { | |
183 | return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN, | |
ca81983f | 184 | CREATE_NOT_FILE | CREATE_DELETE_ON_CLOSE, |
1a500f01 PS |
185 | NULL, SMB2_OP_DELETE); |
186 | } | |
cbe6f439 PS |
187 | |
188 | int | |
189 | smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name, | |
190 | struct cifs_sb_info *cifs_sb) | |
191 | { | |
192 | return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN, | |
ca81983f | 193 | CREATE_DELETE_ON_CLOSE, NULL, |
cbe6f439 PS |
194 | SMB2_OP_DELETE); |
195 | } | |
35143eb5 | 196 | |
568798cc PS |
197 | static int |
198 | smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon, | |
199 | const char *from_name, const char *to_name, | |
200 | struct cifs_sb_info *cifs_sb, __u32 access, int command) | |
35143eb5 PS |
201 | { |
202 | __le16 *smb2_to_name = NULL; | |
203 | int rc; | |
204 | ||
205 | smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb); | |
206 | if (smb2_to_name == NULL) { | |
207 | rc = -ENOMEM; | |
208 | goto smb2_rename_path; | |
209 | } | |
210 | ||
568798cc | 211 | rc = smb2_open_op_close(xid, tcon, cifs_sb, from_name, access, |
ca81983f | 212 | FILE_OPEN, 0, smb2_to_name, command); |
35143eb5 PS |
213 | smb2_rename_path: |
214 | kfree(smb2_to_name); | |
215 | return rc; | |
216 | } | |
568798cc PS |
217 | |
218 | int | |
219 | smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon, | |
220 | const char *from_name, const char *to_name, | |
221 | struct cifs_sb_info *cifs_sb) | |
222 | { | |
223 | return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, | |
224 | DELETE, SMB2_OP_RENAME); | |
225 | } | |
226 | ||
227 | int | |
228 | smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon, | |
229 | const char *from_name, const char *to_name, | |
230 | struct cifs_sb_info *cifs_sb) | |
231 | { | |
232 | return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, | |
233 | FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK); | |
234 | } | |
c839ff24 PS |
235 | |
236 | int | |
237 | smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon, | |
238 | const char *full_path, __u64 size, | |
239 | struct cifs_sb_info *cifs_sb, bool set_alloc) | |
240 | { | |
241 | __le64 eof = cpu_to_le64(size); | |
242 | return smb2_open_op_close(xid, tcon, cifs_sb, full_path, | |
ca81983f | 243 | FILE_WRITE_DATA, FILE_OPEN, 0, &eof, |
c839ff24 PS |
244 | SMB2_OP_SET_EOF); |
245 | } | |
1feeaac7 PS |
246 | |
247 | int | |
248 | smb2_set_file_info(struct inode *inode, const char *full_path, | |
249 | FILE_BASIC_INFO *buf, const unsigned int xid) | |
250 | { | |
251 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
252 | struct tcon_link *tlink; | |
253 | int rc; | |
254 | ||
255 | tlink = cifs_sb_tlink(cifs_sb); | |
256 | if (IS_ERR(tlink)) | |
257 | return PTR_ERR(tlink); | |
258 | rc = smb2_open_op_close(xid, tlink_tcon(tlink), cifs_sb, full_path, | |
ca81983f | 259 | FILE_WRITE_ATTRIBUTES, FILE_OPEN, 0, buf, |
1feeaac7 PS |
260 | SMB2_OP_SET_INFO); |
261 | cifs_put_tlink(tlink); | |
262 | return rc; | |
263 | } |