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"
30 #define DBGC_CLASS DBGC_VFS
32 static int audit_syslog_facility(vfs_handle_struct *handle)
34 static const struct enum_list enum_log_facilities[] = {
36 { LOG_LOCAL0, "LOCAL0" },
37 { LOG_LOCAL1, "LOCAL1" },
38 { LOG_LOCAL2, "LOCAL2" },
39 { LOG_LOCAL3, "LOCAL3" },
40 { LOG_LOCAL4, "LOCAL4" },
41 { LOG_LOCAL5, "LOCAL5" },
42 { LOG_LOCAL6, "LOCAL6" },
43 { LOG_LOCAL7, "LOCAL7" },
49 facility = lp_parm_enum(SNUM(handle->conn), "audit", "facility", enum_log_facilities, LOG_USER);
55 static int audit_syslog_priority(vfs_handle_struct *handle)
57 static const struct enum_list enum_log_priorities[] = {
58 { LOG_EMERG, "EMERG" },
59 { LOG_ALERT, "ALERT" },
62 { LOG_WARNING, "WARNING" },
63 { LOG_NOTICE, "NOTICE" },
65 { LOG_DEBUG, "DEBUG" },
71 priority = lp_parm_enum(SNUM(handle->conn), "audit", "priority",
72 enum_log_priorities, LOG_NOTICE);
74 priority = LOG_WARNING;
80 /* Implementation of vfs_ops. Pass everything on to the default
81 operation but log event first. */
83 static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
87 result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
92 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
94 syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n",
100 static void audit_disconnect(vfs_handle_struct *handle)
102 syslog(audit_syslog_priority(handle), "disconnected\n");
103 SMB_VFS_NEXT_DISCONNECT(handle);
108 static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
110 SMB_STRUCT_DIR *result;
112 result = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
114 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
116 (result == NULL) ? "failed: " : "",
117 (result == NULL) ? strerror(errno) : "");
122 static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
126 result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
128 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
130 (result < 0) ? "failed: " : "",
131 (result < 0) ? strerror(errno) : "");
136 static int audit_rmdir(vfs_handle_struct *handle, const char *path)
140 result = SMB_VFS_NEXT_RMDIR(handle, path);
142 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
144 (result < 0) ? "failed: " : "",
145 (result < 0) ? strerror(errno) : "");
150 static int audit_open(vfs_handle_struct *handle,
151 struct smb_filename *smb_fname, files_struct *fsp,
152 int flags, mode_t mode)
156 result = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
158 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
159 smb_fname->base_name, result,
160 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
161 (result < 0) ? "failed: " : "",
162 (result < 0) ? strerror(errno) : "");
167 static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
171 result = SMB_VFS_NEXT_CLOSE(handle, fsp);
173 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
175 (result < 0) ? "failed: " : "",
176 (result < 0) ? strerror(errno) : "");
181 static int audit_rename(vfs_handle_struct *handle,
182 const struct smb_filename *smb_fname_src,
183 const struct smb_filename *smb_fname_dst)
187 result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
189 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
190 smb_fname_src->base_name,
191 smb_fname_dst->base_name,
192 (result < 0) ? "failed: " : "",
193 (result < 0) ? strerror(errno) : "");
198 static int audit_unlink(vfs_handle_struct *handle,
199 const struct smb_filename *smb_fname)
203 result = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
205 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
206 smb_fname->base_name,
207 (result < 0) ? "failed: " : "",
208 (result < 0) ? strerror(errno) : "");
213 static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
217 result = SMB_VFS_NEXT_CHMOD(handle, path, mode);
219 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
221 (result < 0) ? "failed: " : "",
222 (result < 0) ? strerror(errno) : "");
227 static int audit_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
231 result = SMB_VFS_NEXT_CHMOD_ACL(handle, path, mode);
233 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
235 (result < 0) ? "failed: " : "",
236 (result < 0) ? strerror(errno) : "");
241 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
245 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
247 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
248 fsp->fsp_name->base_name, mode,
249 (result < 0) ? "failed: " : "",
250 (result < 0) ? strerror(errno) : "");
255 static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
259 result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
261 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
262 fsp->fsp_name->base_name, mode,
263 (result < 0) ? "failed: " : "",
264 (result < 0) ? strerror(errno) : "");
269 static struct vfs_fn_pointers vfs_audit_fns = {
270 .connect_fn = audit_connect,
271 .disconnect = audit_disconnect,
272 .opendir = audit_opendir,
273 .mkdir = audit_mkdir,
274 .rmdir = audit_rmdir,
275 .open_fn = audit_open,
276 .close_fn = audit_close,
277 .rename = audit_rename,
278 .unlink = audit_unlink,
279 .chmod = audit_chmod,
280 .fchmod = audit_fchmod,
281 .chmod_acl = audit_chmod_acl,
282 .fchmod_acl = audit_fchmod_acl
285 NTSTATUS vfs_audit_init(void)
287 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "audit",