2 * Auditing VFS module for samba. Log selected file operations to syslog
5 * Copyright (C) Tim Potter 1999-2000
6 * Copyright (C) Alexander Bokovoy 2002
7 * Copyright (C) Stefan (metze) Metzmacher 2002
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
14 * This program 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 the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, see <http://www.gnu.org/licenses/>.
25 #include "system/filesys.h"
26 #include "system/syslog.h"
27 #include "smbd/smbd.h"
28 #include "lib/param/loadparm.h"
31 #define DBGC_CLASS DBGC_VFS
33 static int audit_syslog_facility(vfs_handle_struct *handle)
35 static const struct enum_list enum_log_facilities[] = {
37 { LOG_LOCAL0, "LOCAL0" },
38 { LOG_LOCAL1, "LOCAL1" },
39 { LOG_LOCAL2, "LOCAL2" },
40 { LOG_LOCAL3, "LOCAL3" },
41 { LOG_LOCAL4, "LOCAL4" },
42 { LOG_LOCAL5, "LOCAL5" },
43 { LOG_LOCAL6, "LOCAL6" },
44 { LOG_LOCAL7, "LOCAL7" },
50 facility = lp_parm_enum(SNUM(handle->conn), "audit", "facility", enum_log_facilities, LOG_USER);
56 static int audit_syslog_priority(vfs_handle_struct *handle)
58 static const struct enum_list enum_log_priorities[] = {
59 { LOG_EMERG, "EMERG" },
60 { LOG_ALERT, "ALERT" },
63 { LOG_WARNING, "WARNING" },
64 { LOG_NOTICE, "NOTICE" },
66 { LOG_DEBUG, "DEBUG" },
72 priority = lp_parm_enum(SNUM(handle->conn), "audit", "priority",
73 enum_log_priorities, LOG_NOTICE);
75 priority = LOG_WARNING;
81 /* Implementation of vfs_ops. Pass everything on to the default
82 operation but log event first. */
84 static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
88 result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
93 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
95 syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n",
101 static void audit_disconnect(vfs_handle_struct *handle)
103 syslog(audit_syslog_priority(handle), "disconnected\n");
104 SMB_VFS_NEXT_DISCONNECT(handle);
109 static DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32_t attr)
113 result = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
115 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
117 (result == NULL) ? "failed: " : "",
118 (result == NULL) ? strerror(errno) : "");
123 static int audit_mkdir(vfs_handle_struct *handle,
124 const struct smb_filename *smb_fname,
129 result = SMB_VFS_NEXT_MKDIR(handle, smb_fname, mode);
131 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
132 smb_fname->base_name,
133 (result < 0) ? "failed: " : "",
134 (result < 0) ? strerror(errno) : "");
139 static int audit_rmdir(vfs_handle_struct *handle, const char *path)
143 result = SMB_VFS_NEXT_RMDIR(handle, path);
145 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
147 (result < 0) ? "failed: " : "",
148 (result < 0) ? strerror(errno) : "");
153 static int audit_open(vfs_handle_struct *handle,
154 struct smb_filename *smb_fname, files_struct *fsp,
155 int flags, mode_t mode)
159 result = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
161 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
162 smb_fname->base_name, result,
163 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
164 (result < 0) ? "failed: " : "",
165 (result < 0) ? strerror(errno) : "");
170 static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
174 result = SMB_VFS_NEXT_CLOSE(handle, fsp);
176 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
178 (result < 0) ? "failed: " : "",
179 (result < 0) ? strerror(errno) : "");
184 static int audit_rename(vfs_handle_struct *handle,
185 const struct smb_filename *smb_fname_src,
186 const struct smb_filename *smb_fname_dst)
190 result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
192 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
193 smb_fname_src->base_name,
194 smb_fname_dst->base_name,
195 (result < 0) ? "failed: " : "",
196 (result < 0) ? strerror(errno) : "");
201 static int audit_unlink(vfs_handle_struct *handle,
202 const struct smb_filename *smb_fname)
206 result = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
208 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
209 smb_fname->base_name,
210 (result < 0) ? "failed: " : "",
211 (result < 0) ? strerror(errno) : "");
216 static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
220 result = SMB_VFS_NEXT_CHMOD(handle, path, mode);
222 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
224 (result < 0) ? "failed: " : "",
225 (result < 0) ? strerror(errno) : "");
230 static int audit_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
234 result = SMB_VFS_NEXT_CHMOD_ACL(handle, path, mode);
236 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
238 (result < 0) ? "failed: " : "",
239 (result < 0) ? strerror(errno) : "");
244 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
248 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
250 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
251 fsp->fsp_name->base_name, mode,
252 (result < 0) ? "failed: " : "",
253 (result < 0) ? strerror(errno) : "");
258 static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
262 result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
264 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
265 fsp->fsp_name->base_name, mode,
266 (result < 0) ? "failed: " : "",
267 (result < 0) ? strerror(errno) : "");
272 static struct vfs_fn_pointers vfs_audit_fns = {
273 .connect_fn = audit_connect,
274 .disconnect_fn = audit_disconnect,
275 .opendir_fn = audit_opendir,
276 .mkdir_fn = audit_mkdir,
277 .rmdir_fn = audit_rmdir,
278 .open_fn = audit_open,
279 .close_fn = audit_close,
280 .rename_fn = audit_rename,
281 .unlink_fn = audit_unlink,
282 .chmod_fn = audit_chmod,
283 .fchmod_fn = audit_fchmod,
284 .chmod_acl_fn = audit_chmod_acl,
285 .fchmod_acl_fn = audit_fchmod_acl
289 NTSTATUS vfs_audit_init(void)
291 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "audit",