Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/xattr.c |
| 3 | * |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 4 | * Copyright (c) International Business Machines Corp., 2003, 2007 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
| 6 | * |
| 7 | * This library is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Lesser General Public License as published |
| 9 | * by the Free Software Foundation; either version 2.1 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 15 | * the GNU Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public License |
| 18 | * along with this library; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | #include <linux/fs.h> |
| 23 | #include <linux/posix_acl_xattr.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 24 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include "cifsfs.h" |
| 26 | #include "cifspdu.h" |
| 27 | #include "cifsglob.h" |
| 28 | #include "cifsproto.h" |
| 29 | #include "cifs_debug.h" |
| 30 | |
| 31 | #define MAX_EA_VALUE_SIZE 65535 |
| 32 | #define CIFS_XATTR_DOS_ATTRIB "user.DosAttrib" |
| 33 | #define CIFS_XATTR_USER_PREFIX "user." |
| 34 | #define CIFS_XATTR_SYSTEM_PREFIX "system." |
| 35 | #define CIFS_XATTR_OS2_PREFIX "os2." |
| 36 | #define CIFS_XATTR_SECURITY_PREFIX ".security" |
| 37 | #define CIFS_XATTR_TRUSTED_PREFIX "trusted." |
| 38 | #define XATTR_TRUSTED_PREFIX_LEN 8 |
| 39 | #define XATTR_SECURITY_PREFIX_LEN 9 |
| 40 | /* BB need to add server (Samba e.g) support for security and trusted prefix */ |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 44 | int cifs_removexattr(struct dentry *direntry, const char *ea_name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | { |
| 46 | int rc = -EOPNOTSUPP; |
| 47 | #ifdef CONFIG_CIFS_XATTR |
| 48 | int xid; |
| 49 | struct cifs_sb_info *cifs_sb; |
| 50 | struct cifsTconInfo *pTcon; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 51 | struct super_block *sb; |
| 52 | char *full_path; |
| 53 | |
| 54 | if (direntry == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | return -EIO; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 56 | if (direntry->d_inode == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | return -EIO; |
| 58 | sb = direntry->d_inode->i_sb; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 59 | if (sb == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | return -EIO; |
| 61 | xid = GetXid(); |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 62 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | cifs_sb = CIFS_SB(sb); |
| 64 | pTcon = cifs_sb->tcon; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 65 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | full_path = build_path_from_dentry(direntry); |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 67 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 68 | rc = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | FreeXid(xid); |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 70 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | } |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 72 | if (ea_name == NULL) { |
| 73 | cFYI(1, ("Null xattr names not supported")); |
| 74 | } else if (strncmp(ea_name, CIFS_XATTR_USER_PREFIX, 5) |
| 75 | && (strncmp(ea_name, CIFS_XATTR_OS2_PREFIX, 4))) { |
| 76 | cFYI(1, |
| 77 | ("illegal xattr request %s (only user namespace supported)", |
| 78 | ea_name)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | /* BB what if no namespace prefix? */ |
| 80 | /* Should we just pass them to server, except for |
| 81 | system and perhaps security prefixes? */ |
| 82 | } else { |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 83 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | goto remove_ea_exit; |
| 85 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 86 | ea_name += 5; /* skip past user. prefix */ |
| 87 | rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, NULL, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 88 | (__u16)0, cifs_sb->local_nls, |
| 89 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | } |
| 91 | remove_ea_exit: |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 92 | kfree(full_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | FreeXid(xid); |
| 94 | #endif |
| 95 | return rc; |
| 96 | } |
| 97 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 98 | int cifs_setxattr(struct dentry *direntry, const char *ea_name, |
| 99 | const void *ea_value, size_t value_size, int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | { |
| 101 | int rc = -EOPNOTSUPP; |
| 102 | #ifdef CONFIG_CIFS_XATTR |
| 103 | int xid; |
| 104 | struct cifs_sb_info *cifs_sb; |
| 105 | struct cifsTconInfo *pTcon; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 106 | struct super_block *sb; |
| 107 | char *full_path; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 109 | if (direntry == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | return -EIO; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 111 | if (direntry->d_inode == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | return -EIO; |
| 113 | sb = direntry->d_inode->i_sb; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 114 | if (sb == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | return -EIO; |
| 116 | xid = GetXid(); |
| 117 | |
| 118 | cifs_sb = CIFS_SB(sb); |
| 119 | pTcon = cifs_sb->tcon; |
| 120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | full_path = build_path_from_dentry(direntry); |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 122 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 123 | rc = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | FreeXid(xid); |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 125 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | } |
| 127 | /* return dos attributes as pseudo xattr */ |
| 128 | /* return alt name if available as pseudo attr */ |
| 129 | |
| 130 | /* if proc/fs/cifs/streamstoxattr is set then |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 131 | search server for EAs or streams to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | returns as xattrs */ |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 133 | if (value_size > MAX_EA_VALUE_SIZE) { |
| 134 | cFYI(1, ("size of EA value too large")); |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 135 | kfree(full_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | FreeXid(xid); |
| 137 | return -EOPNOTSUPP; |
| 138 | } |
| 139 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 140 | if (ea_name == NULL) { |
| 141 | cFYI(1, ("Null xattr names not supported")); |
| 142 | } else if (strncmp(ea_name, CIFS_XATTR_USER_PREFIX, 5) == 0) { |
| 143 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | goto set_ea_exit; |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 145 | if (strncmp(ea_name, CIFS_XATTR_DOS_ATTRIB, 14) == 0) |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 146 | cFYI(1, ("attempt to set cifs inode metadata")); |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 147 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | ea_name += 5; /* skip past user. prefix */ |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 149 | rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, ea_value, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 150 | (__u16)value_size, cifs_sb->local_nls, |
| 151 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 152 | } else if (strncmp(ea_name, CIFS_XATTR_OS2_PREFIX, 4) == 0) { |
| 153 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | goto set_ea_exit; |
| 155 | |
| 156 | ea_name += 4; /* skip past os2. prefix */ |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 157 | rc = CIFSSMBSetEA(xid, pTcon, full_path, ea_name, ea_value, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 158 | (__u16)value_size, cifs_sb->local_nls, |
| 159 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | } else { |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 161 | int temp; |
| 162 | temp = strncmp(ea_name, POSIX_ACL_XATTR_ACCESS, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | strlen(POSIX_ACL_XATTR_ACCESS)); |
| 164 | if (temp == 0) { |
| 165 | #ifdef CONFIG_CIFS_POSIX |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 166 | if (sb->s_flags & MS_POSIXACL) |
| 167 | rc = CIFSSMBSetPosixACL(xid, pTcon, full_path, |
| 168 | ea_value, (const int)value_size, |
| 169 | ACL_TYPE_ACCESS, cifs_sb->local_nls, |
| 170 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 171 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 172 | cFYI(1, ("set POSIX ACL rc %d", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | #else |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 174 | cFYI(1, ("set POSIX ACL not supported")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | #endif |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 176 | } else if (strncmp(ea_name, POSIX_ACL_XATTR_DEFAULT, |
| 177 | strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | #ifdef CONFIG_CIFS_POSIX |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 179 | if (sb->s_flags & MS_POSIXACL) |
| 180 | rc = CIFSSMBSetPosixACL(xid, pTcon, full_path, |
| 181 | ea_value, (const int)value_size, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 182 | ACL_TYPE_DEFAULT, cifs_sb->local_nls, |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 183 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 184 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 185 | cFYI(1, ("set POSIX default ACL rc %d", rc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | #else |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 187 | cFYI(1, ("set default POSIX ACL not supported")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | #endif |
| 189 | } else { |
Steve French | 63135e0 | 2007-07-17 17:34:02 +0000 | [diff] [blame] | 190 | cFYI(1, ("illegal xattr request %s (only user namespace" |
| 191 | " supported)", ea_name)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | /* BB what if no namespace prefix? */ |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 193 | /* Should we just pass them to server, except for |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | system and perhaps security prefixes? */ |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | set_ea_exit: |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 199 | kfree(full_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | FreeXid(xid); |
| 201 | #endif |
| 202 | return rc; |
| 203 | } |
| 204 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 205 | ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name, |
| 206 | void *ea_value, size_t buf_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | { |
| 208 | ssize_t rc = -EOPNOTSUPP; |
| 209 | #ifdef CONFIG_CIFS_XATTR |
| 210 | int xid; |
| 211 | struct cifs_sb_info *cifs_sb; |
| 212 | struct cifsTconInfo *pTcon; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 213 | struct super_block *sb; |
| 214 | char *full_path; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 216 | if (direntry == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | return -EIO; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 218 | if (direntry->d_inode == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | return -EIO; |
| 220 | sb = direntry->d_inode->i_sb; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 221 | if (sb == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | return -EIO; |
| 223 | |
| 224 | xid = GetXid(); |
| 225 | |
| 226 | cifs_sb = CIFS_SB(sb); |
| 227 | pTcon = cifs_sb->tcon; |
| 228 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | full_path = build_path_from_dentry(direntry); |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 230 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 231 | rc = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | FreeXid(xid); |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 233 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | } |
| 235 | /* return dos attributes as pseudo xattr */ |
| 236 | /* return alt name if available as pseudo attr */ |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 237 | if (ea_name == NULL) { |
| 238 | cFYI(1, ("Null xattr names not supported")); |
| 239 | } else if (strncmp(ea_name, CIFS_XATTR_USER_PREFIX, 5) == 0) { |
| 240 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | goto get_ea_exit; |
| 242 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 243 | if (strncmp(ea_name, CIFS_XATTR_DOS_ATTRIB, 14) == 0) { |
| 244 | cFYI(1, ("attempt to query cifs inode metadata")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | /* revalidate/getattr then populate from inode */ |
| 246 | } /* BB add else when above is implemented */ |
| 247 | ea_name += 5; /* skip past user. prefix */ |
Jeff Layton | 31c0519 | 2010-02-10 16:18:26 -0500 | [diff] [blame] | 248 | rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 249 | buf_size, cifs_sb->local_nls, |
| 250 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 251 | } else if (strncmp(ea_name, CIFS_XATTR_OS2_PREFIX, 4) == 0) { |
| 252 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | goto get_ea_exit; |
| 254 | |
| 255 | ea_name += 4; /* skip past os2. prefix */ |
Jeff Layton | 31c0519 | 2010-02-10 16:18:26 -0500 | [diff] [blame] | 256 | rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 257 | buf_size, cifs_sb->local_nls, |
| 258 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 259 | } else if (strncmp(ea_name, POSIX_ACL_XATTR_ACCESS, |
Steve French | 0a4b92c | 2006-01-12 15:44:21 -0800 | [diff] [blame] | 260 | strlen(POSIX_ACL_XATTR_ACCESS)) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | #ifdef CONFIG_CIFS_POSIX |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 262 | if (sb->s_flags & MS_POSIXACL) |
Steve French | 1da0c78 | 2005-04-28 22:41:04 -0700 | [diff] [blame] | 263 | rc = CIFSSMBGetPosixACL(xid, pTcon, full_path, |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 264 | ea_value, buf_size, ACL_TYPE_ACCESS, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 265 | cifs_sb->local_nls, |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 266 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 267 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | d12fd12 | 2007-10-03 19:43:19 +0000 | [diff] [blame] | 268 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 269 | else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { |
Steve French | 0a4b92c | 2006-01-12 15:44:21 -0800 | [diff] [blame] | 270 | __u16 fid; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 271 | int oplock = 0; |
Steve French | 630f3f0c | 2007-10-25 21:17:17 +0000 | [diff] [blame] | 272 | struct cifs_ntsd *pacl = NULL; |
| 273 | __u32 buflen = 0; |
Steve French | 63d2583 | 2007-11-05 21:46:10 +0000 | [diff] [blame] | 274 | if (experimEnabled) |
Steve French | d12fd12 | 2007-10-03 19:43:19 +0000 | [diff] [blame] | 275 | rc = CIFSSMBOpen(xid, pTcon, full_path, |
| 276 | FILE_OPEN, GENERIC_READ, 0, &fid, |
| 277 | &oplock, NULL, cifs_sb->local_nls, |
| 278 | cifs_sb->mnt_cifs_flags & |
| 279 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 280 | /* else rc is EOPNOTSUPP from above */ |
| 281 | |
Steve French | 63d2583 | 2007-11-05 21:46:10 +0000 | [diff] [blame] | 282 | if (rc == 0) { |
Steve French | 630f3f0c | 2007-10-25 21:17:17 +0000 | [diff] [blame] | 283 | rc = CIFSSMBGetCIFSACL(xid, pTcon, fid, &pacl, |
| 284 | &buflen); |
Steve French | 2fe87f0 | 2006-09-21 07:02:52 +0000 | [diff] [blame] | 285 | CIFSSMBClose(xid, pTcon, fid); |
Steve French | 0a4b92c | 2006-01-12 15:44:21 -0800 | [diff] [blame] | 286 | } |
Steve French | d12fd12 | 2007-10-03 19:43:19 +0000 | [diff] [blame] | 287 | } |
| 288 | #endif /* EXPERIMENTAL */ |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 289 | #else |
| 290 | cFYI(1, ("query POSIX ACL not supported yet")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | #endif /* CONFIG_CIFS_POSIX */ |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 292 | } else if (strncmp(ea_name, POSIX_ACL_XATTR_DEFAULT, |
Steve French | 0a4b92c | 2006-01-12 15:44:21 -0800 | [diff] [blame] | 293 | strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | #ifdef CONFIG_CIFS_POSIX |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 295 | if (sb->s_flags & MS_POSIXACL) |
Steve French | 1da0c78 | 2005-04-28 22:41:04 -0700 | [diff] [blame] | 296 | rc = CIFSSMBGetPosixACL(xid, pTcon, full_path, |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 297 | ea_value, buf_size, ACL_TYPE_DEFAULT, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 298 | cifs_sb->local_nls, |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 299 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 300 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 301 | #else |
| 302 | cFYI(1, ("query POSIX default ACL not supported yet")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | #endif |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 304 | } else if (strncmp(ea_name, |
| 305 | CIFS_XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) == 0) { |
| 306 | cFYI(1, ("Trusted xattr namespace not supported yet")); |
| 307 | } else if (strncmp(ea_name, |
| 308 | CIFS_XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) == 0) { |
| 309 | cFYI(1, ("Security xattr namespace not supported yet")); |
Steve French | ad7a292 | 2008-02-07 23:25:02 +0000 | [diff] [blame] | 310 | } else |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 311 | cFYI(1, |
| 312 | ("illegal xattr request %s (only user namespace supported)", |
| 313 | ea_name)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 315 | /* We could add an additional check for streams ie |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | if proc/fs/cifs/streamstoxattr is set then |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 317 | search server for EAs or streams to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | returns as xattrs */ |
| 319 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 320 | if (rc == -EINVAL) |
| 321 | rc = -EOPNOTSUPP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | |
| 323 | get_ea_exit: |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 324 | kfree(full_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | FreeXid(xid); |
| 326 | #endif |
| 327 | return rc; |
| 328 | } |
| 329 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 330 | ssize_t cifs_listxattr(struct dentry *direntry, char *data, size_t buf_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | { |
| 332 | ssize_t rc = -EOPNOTSUPP; |
| 333 | #ifdef CONFIG_CIFS_XATTR |
| 334 | int xid; |
| 335 | struct cifs_sb_info *cifs_sb; |
| 336 | struct cifsTconInfo *pTcon; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 337 | struct super_block *sb; |
| 338 | char *full_path; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 340 | if (direntry == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | return -EIO; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 342 | if (direntry->d_inode == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | return -EIO; |
| 344 | sb = direntry->d_inode->i_sb; |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 345 | if (sb == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | |
| 348 | cifs_sb = CIFS_SB(sb); |
| 349 | pTcon = cifs_sb->tcon; |
| 350 | |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 351 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) |
Steve French | ea4c07d | 2006-08-16 19:44:25 +0000 | [diff] [blame] | 352 | return -EOPNOTSUPP; |
| 353 | |
| 354 | xid = GetXid(); |
| 355 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | full_path = build_path_from_dentry(direntry); |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 357 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 358 | rc = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | FreeXid(xid); |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 360 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | } |
| 362 | /* return dos attributes as pseudo xattr */ |
| 363 | /* return alt name if available as pseudo attr */ |
| 364 | |
| 365 | /* if proc/fs/cifs/streamstoxattr is set then |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 366 | search server for EAs or streams to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | returns as xattrs */ |
Jeff Layton | 31c0519 | 2010-02-10 16:18:26 -0500 | [diff] [blame] | 368 | rc = CIFSSMBQAllEAs(xid, pTcon, full_path, NULL, data, |
| 369 | buf_size, cifs_sb->local_nls, |
Steve French | 79a58d1 | 2007-07-06 22:44:50 +0000 | [diff] [blame] | 370 | cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 371 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 373 | kfree(full_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | FreeXid(xid); |
| 375 | #endif |
| 376 | return rc; |
| 377 | } |