Pavel Shilovsky | be4cb9e | 2011-12-29 17:06:33 +0400 | [diff] [blame] | 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, |
| 44 | __u32 file_attributes, __u32 create_options, |
| 45 | void *data, int command) |
| 46 | { |
| 47 | int rc, tmprc = 0; |
| 48 | u64 persistent_fid, volatile_fid; |
| 49 | __le16 *utf16_path; |
| 50 | |
| 51 | utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); |
| 52 | if (!utf16_path) |
| 53 | return -ENOMEM; |
| 54 | |
| 55 | rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid, |
| 56 | desired_access, create_disposition, file_attributes, |
Pavel Shilovsky | f0df737 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 57 | create_options, NULL); |
Pavel Shilovsky | be4cb9e | 2011-12-29 17:06:33 +0400 | [diff] [blame] | 58 | if (rc) { |
| 59 | kfree(utf16_path); |
| 60 | return rc; |
| 61 | } |
| 62 | |
| 63 | switch (command) { |
| 64 | case SMB2_OP_DELETE: |
| 65 | break; |
| 66 | case SMB2_OP_QUERY_INFO: |
| 67 | tmprc = SMB2_query_info(xid, tcon, persistent_fid, |
| 68 | volatile_fid, |
| 69 | (struct smb2_file_all_info *)data); |
| 70 | break; |
| 71 | case SMB2_OP_MKDIR: |
| 72 | /* |
| 73 | * Directories are created through parameters in the |
| 74 | * SMB2_open() call. |
| 75 | */ |
| 76 | break; |
Pavel Shilovsky | 35143eb | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 77 | case SMB2_OP_RENAME: |
| 78 | tmprc = SMB2_rename(xid, tcon, persistent_fid, volatile_fid, |
| 79 | (__le16 *)data); |
| 80 | break; |
Pavel Shilovsky | 568798c | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 81 | case SMB2_OP_HARDLINK: |
| 82 | tmprc = SMB2_set_hardlink(xid, tcon, persistent_fid, |
| 83 | volatile_fid, (__le16 *)data); |
| 84 | break; |
Pavel Shilovsky | c839ff2 | 2012-09-18 16:20:32 -0700 | [diff] [blame^] | 85 | case SMB2_OP_SET_EOF: |
| 86 | tmprc = SMB2_set_eof(xid, tcon, persistent_fid, volatile_fid, |
| 87 | current->tgid, (__le64 *)data); |
| 88 | break; |
Pavel Shilovsky | be4cb9e | 2011-12-29 17:06:33 +0400 | [diff] [blame] | 89 | default: |
| 90 | cERROR(1, "Invalid command"); |
| 91 | break; |
| 92 | } |
| 93 | |
| 94 | rc = SMB2_close(xid, tcon, persistent_fid, volatile_fid); |
| 95 | if (tmprc) |
| 96 | rc = tmprc; |
| 97 | kfree(utf16_path); |
| 98 | return rc; |
| 99 | } |
| 100 | |
Pavel Shilovsky | f0df737 | 2012-09-18 16:20:26 -0700 | [diff] [blame] | 101 | void |
Pavel Shilovsky | be4cb9e | 2011-12-29 17:06:33 +0400 | [diff] [blame] | 102 | move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src) |
| 103 | { |
| 104 | memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src); |
| 105 | dst->CurrentByteOffset = src->CurrentByteOffset; |
| 106 | dst->Mode = src->Mode; |
| 107 | dst->AlignmentRequirement = src->AlignmentRequirement; |
| 108 | dst->IndexNumber1 = 0; /* we don't use it */ |
| 109 | } |
| 110 | |
| 111 | int |
| 112 | smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, |
| 113 | struct cifs_sb_info *cifs_sb, const char *full_path, |
| 114 | FILE_ALL_INFO *data, bool *adjust_tz) |
| 115 | { |
| 116 | int rc; |
| 117 | struct smb2_file_all_info *smb2_data; |
| 118 | |
| 119 | *adjust_tz = false; |
| 120 | |
| 121 | smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2, |
| 122 | GFP_KERNEL); |
| 123 | if (smb2_data == NULL) |
| 124 | return -ENOMEM; |
| 125 | |
| 126 | rc = smb2_open_op_close(xid, tcon, cifs_sb, full_path, |
| 127 | FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0, |
| 128 | smb2_data, SMB2_OP_QUERY_INFO); |
| 129 | if (rc) |
| 130 | goto out; |
| 131 | |
| 132 | move_smb2_info_to_cifs(data, smb2_data); |
| 133 | out: |
| 134 | kfree(smb2_data); |
| 135 | return rc; |
| 136 | } |
Pavel Shilovsky | a0e7318 | 2011-07-19 12:56:37 +0400 | [diff] [blame] | 137 | |
| 138 | int |
| 139 | smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
| 140 | struct cifs_sb_info *cifs_sb) |
| 141 | { |
| 142 | return smb2_open_op_close(xid, tcon, cifs_sb, name, |
| 143 | FILE_WRITE_ATTRIBUTES, FILE_CREATE, 0, |
| 144 | CREATE_NOT_FILE, NULL, SMB2_OP_MKDIR); |
| 145 | } |
| 146 | |
| 147 | void |
| 148 | smb2_mkdir_setinfo(struct inode *inode, const char *name, |
| 149 | struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon, |
| 150 | const unsigned int xid) |
| 151 | { |
| 152 | FILE_BASIC_INFO data; |
| 153 | struct cifsInodeInfo *cifs_i; |
| 154 | u32 dosattrs; |
| 155 | int tmprc; |
| 156 | |
| 157 | memset(&data, 0, sizeof(data)); |
| 158 | cifs_i = CIFS_I(inode); |
| 159 | dosattrs = cifs_i->cifsAttrs | ATTR_READONLY; |
| 160 | data.Attributes = cpu_to_le32(dosattrs); |
| 161 | tmprc = smb2_open_op_close(xid, tcon, cifs_sb, name, |
| 162 | FILE_WRITE_ATTRIBUTES, FILE_CREATE, 0, |
| 163 | CREATE_NOT_FILE, &data, SMB2_OP_SET_INFO); |
| 164 | if (tmprc == 0) |
| 165 | cifs_i->cifsAttrs = dosattrs; |
| 166 | } |
Pavel Shilovsky | 1a500f0 | 2012-07-10 16:14:38 +0400 | [diff] [blame] | 167 | |
| 168 | int |
| 169 | smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
| 170 | struct cifs_sb_info *cifs_sb) |
| 171 | { |
| 172 | return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN, |
| 173 | 0, CREATE_NOT_FILE | CREATE_DELETE_ON_CLOSE, |
| 174 | NULL, SMB2_OP_DELETE); |
| 175 | } |
Pavel Shilovsky | cbe6f43 | 2012-09-18 16:20:25 -0700 | [diff] [blame] | 176 | |
| 177 | int |
| 178 | smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
| 179 | struct cifs_sb_info *cifs_sb) |
| 180 | { |
| 181 | return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN, |
| 182 | 0, CREATE_DELETE_ON_CLOSE, NULL, |
| 183 | SMB2_OP_DELETE); |
| 184 | } |
Pavel Shilovsky | 35143eb | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 185 | |
Pavel Shilovsky | 568798c | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 186 | static int |
| 187 | smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon, |
| 188 | const char *from_name, const char *to_name, |
| 189 | struct cifs_sb_info *cifs_sb, __u32 access, int command) |
Pavel Shilovsky | 35143eb | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 190 | { |
| 191 | __le16 *smb2_to_name = NULL; |
| 192 | int rc; |
| 193 | |
| 194 | smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb); |
| 195 | if (smb2_to_name == NULL) { |
| 196 | rc = -ENOMEM; |
| 197 | goto smb2_rename_path; |
| 198 | } |
| 199 | |
Pavel Shilovsky | 568798c | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 200 | rc = smb2_open_op_close(xid, tcon, cifs_sb, from_name, access, |
| 201 | FILE_OPEN, 0, 0, smb2_to_name, command); |
Pavel Shilovsky | 35143eb | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 202 | smb2_rename_path: |
| 203 | kfree(smb2_to_name); |
| 204 | return rc; |
| 205 | } |
Pavel Shilovsky | 568798c | 2012-09-18 16:20:31 -0700 | [diff] [blame] | 206 | |
| 207 | int |
| 208 | smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon, |
| 209 | const char *from_name, const char *to_name, |
| 210 | struct cifs_sb_info *cifs_sb) |
| 211 | { |
| 212 | return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, |
| 213 | DELETE, SMB2_OP_RENAME); |
| 214 | } |
| 215 | |
| 216 | int |
| 217 | smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon, |
| 218 | const char *from_name, const char *to_name, |
| 219 | struct cifs_sb_info *cifs_sb) |
| 220 | { |
| 221 | return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, |
| 222 | FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK); |
| 223 | } |
Pavel Shilovsky | c839ff2 | 2012-09-18 16:20:32 -0700 | [diff] [blame^] | 224 | |
| 225 | int |
| 226 | smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon, |
| 227 | const char *full_path, __u64 size, |
| 228 | struct cifs_sb_info *cifs_sb, bool set_alloc) |
| 229 | { |
| 230 | __le64 eof = cpu_to_le64(size); |
| 231 | return smb2_open_op_close(xid, tcon, cifs_sb, full_path, |
| 232 | FILE_WRITE_DATA, FILE_OPEN, 0, 0, &eof, |
| 233 | SMB2_OP_SET_EOF); |
| 234 | } |