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
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
41 #ifndef SYSLOG_FACILITY
42 #define SYSLOG_FACILITY LOG_USER
45 #ifndef SYSLOG_PRIORITY
46 #define SYSLOG_PRIORITY LOG_NOTICE
49 /* Function prototypes */
51 static int audit_connect(struct connection_struct
*conn
, const char *svc
, const char *user
);
52 static void audit_disconnect(struct connection_struct
*conn
);
53 static DIR *audit_opendir(struct connection_struct
*conn
, const char *fname
);
54 static int audit_mkdir(struct connection_struct
*conn
, const char *path
, mode_t mode
);
55 static int audit_rmdir(struct connection_struct
*conn
, const char *path
);
56 static int audit_open(struct connection_struct
*conn
, const char *fname
, int flags
, mode_t mode
);
57 static int audit_close(struct files_struct
*fsp
, int fd
);
58 static int audit_rename(struct connection_struct
*conn
, const char *old
, const char *new);
59 static int audit_unlink(struct connection_struct
*conn
, const char *path
);
60 static int audit_chmod(struct connection_struct
*conn
, const char *path
, mode_t mode
);
61 static int audit_chmod_acl(struct connection_struct
*conn
, const char *name
, mode_t mode
);
62 static int audit_fchmod(struct files_struct
*fsp
, int fd
, mode_t mode
);
63 static int audit_fchmod_acl(struct files_struct
*fsp
, int fd
, mode_t mode
);
67 static struct vfs_ops default_vfs_ops
; /* For passthrough operation */
68 static struct smb_vfs_handle_struct
*audit_handle
;
70 static vfs_op_tuple audit_ops
[] = {
74 {audit_connect
, SMB_VFS_OP_CONNECT
, SMB_VFS_LAYER_LOGGER
},
75 {audit_disconnect
, SMB_VFS_OP_DISCONNECT
, SMB_VFS_LAYER_LOGGER
},
77 /* Directory operations */
79 {audit_opendir
, SMB_VFS_OP_OPENDIR
, SMB_VFS_LAYER_LOGGER
},
80 {audit_mkdir
, SMB_VFS_OP_MKDIR
, SMB_VFS_LAYER_LOGGER
},
81 {audit_rmdir
, SMB_VFS_OP_RMDIR
, SMB_VFS_LAYER_LOGGER
},
85 {audit_open
, SMB_VFS_OP_OPEN
, SMB_VFS_LAYER_LOGGER
},
86 {audit_close
, SMB_VFS_OP_CLOSE
, SMB_VFS_LAYER_LOGGER
},
87 {audit_rename
, SMB_VFS_OP_RENAME
, SMB_VFS_LAYER_LOGGER
},
88 {audit_unlink
, SMB_VFS_OP_UNLINK
, SMB_VFS_LAYER_LOGGER
},
89 {audit_chmod
, SMB_VFS_OP_CHMOD
, SMB_VFS_LAYER_LOGGER
},
90 {audit_fchmod
, SMB_VFS_OP_FCHMOD
, SMB_VFS_LAYER_LOGGER
},
91 {audit_chmod_acl
, SMB_VFS_OP_CHMOD_ACL
, SMB_VFS_LAYER_LOGGER
},
92 {audit_fchmod_acl
, SMB_VFS_OP_FCHMOD_ACL
, SMB_VFS_LAYER_LOGGER
},
94 /* Finish VFS operations definition */
96 {NULL
, SMB_VFS_OP_NOOP
, SMB_VFS_LAYER_NOOP
}
99 /* VFS initialisation function. Return vfs_op_tuple array back to SAMBA. */
101 vfs_op_tuple
*vfs_init(int *vfs_version
, struct vfs_ops
*def_vfs_ops
,
102 struct smb_vfs_handle_struct
*vfs_handle
)
104 *vfs_version
= SMB_VFS_INTERFACE_VERSION
;
105 memcpy(&default_vfs_ops
, def_vfs_ops
, sizeof(struct vfs_ops
));
107 audit_handle
= vfs_handle
;
109 openlog("smbd_audit", LOG_PID
, SYSLOG_FACILITY
);
110 syslog(SYSLOG_PRIORITY
, "VFS_INIT: vfs_ops loaded\n");
114 /* VFS finalization function. */
115 void vfs_done(connection_struct
*conn
)
117 syslog(SYSLOG_PRIORITY
, "VFS_DONE: vfs module unloaded\n");
120 /* Implementation of vfs_ops. Pass everything on to the default
121 operation but log event first. */
123 static int audit_connect(struct connection_struct
*conn
, const char *svc
, const char *user
)
125 syslog(SYSLOG_PRIORITY
, "connect to service %s by user %s\n",
128 return default_vfs_ops
.connect(conn
, svc
, user
);
131 static void audit_disconnect(struct connection_struct
*conn
)
133 syslog(SYSLOG_PRIORITY
, "disconnected\n");
134 default_vfs_ops
.disconnect(conn
);
137 static DIR *audit_opendir(struct connection_struct
*conn
, const char *fname
)
139 DIR *result
= default_vfs_ops
.opendir(conn
, fname
);
141 syslog(SYSLOG_PRIORITY
, "opendir %s %s%s\n",
143 (result
== NULL
) ? "failed: " : "",
144 (result
== NULL
) ? strerror(errno
) : "");
149 static int audit_mkdir(struct connection_struct
*conn
, const char *path
, mode_t mode
)
151 int result
= default_vfs_ops
.mkdir(conn
, path
, mode
);
153 syslog(SYSLOG_PRIORITY
, "mkdir %s %s%s\n",
155 (result
< 0) ? "failed: " : "",
156 (result
< 0) ? strerror(errno
) : "");
161 static int audit_rmdir(struct connection_struct
*conn
, const char *path
)
163 int result
= default_vfs_ops
.rmdir(conn
, path
);
165 syslog(SYSLOG_PRIORITY
, "rmdir %s %s%s\n",
167 (result
< 0) ? "failed: " : "",
168 (result
< 0) ? strerror(errno
) : "");
173 static int audit_open(struct connection_struct
*conn
, const char *fname
, int flags
, mode_t mode
)
175 int result
= default_vfs_ops
.open(conn
, fname
, flags
, mode
);
177 syslog(SYSLOG_PRIORITY
, "open %s (fd %d) %s%s%s\n",
179 ((flags
& O_WRONLY
) || (flags
& O_RDWR
)) ? "for writing " : "",
180 (result
< 0) ? "failed: " : "",
181 (result
< 0) ? strerror(errno
) : "");
186 static int audit_close(struct files_struct
*fsp
, int fd
)
188 int result
= default_vfs_ops
.close(fsp
, fd
);
190 syslog(SYSLOG_PRIORITY
, "close fd %d %s%s\n",
192 (result
< 0) ? "failed: " : "",
193 (result
< 0) ? strerror(errno
) : "");
198 static int audit_rename(struct connection_struct
*conn
, const char *old
, const char *new)
200 int result
= default_vfs_ops
.rename(conn
, old
, new);
202 syslog(SYSLOG_PRIORITY
, "rename %s -> %s %s%s\n",
204 (result
< 0) ? "failed: " : "",
205 (result
< 0) ? strerror(errno
) : "");
210 static int audit_unlink(struct connection_struct
*conn
, const char *path
)
212 int result
= default_vfs_ops
.unlink(conn
, path
);
214 syslog(SYSLOG_PRIORITY
, "unlink %s %s%s\n",
216 (result
< 0) ? "failed: " : "",
217 (result
< 0) ? strerror(errno
) : "");
222 static int audit_chmod(struct connection_struct
*conn
, const char *path
, mode_t mode
)
224 int result
= default_vfs_ops
.chmod(conn
, path
, mode
);
226 syslog(SYSLOG_PRIORITY
, "chmod %s mode 0x%x %s%s\n",
228 (result
< 0) ? "failed: " : "",
229 (result
< 0) ? strerror(errno
) : "");
234 static int audit_chmod_acl(struct connection_struct
*conn
, const char *path
, mode_t mode
)
238 if ( !default_vfs_ops
.chmod_acl
)
241 result
= default_vfs_ops
.chmod_acl(conn
, path
, mode
);
243 syslog(SYSLOG_PRIORITY
, "chmod_acl %s mode 0x%x %s%s\n",
245 (result
< 0) ? "failed: " : "",
246 (result
< 0) ? strerror(errno
) : "");
251 static int audit_fchmod(struct files_struct
*fsp
, int fd
, mode_t mode
)
253 int result
= default_vfs_ops
.fchmod(fsp
, fd
, mode
);
255 syslog(SYSLOG_PRIORITY
, "fchmod %s mode 0x%x %s%s\n",
257 (result
< 0) ? "failed: " : "",
258 (result
< 0) ? strerror(errno
) : "");
263 static int audit_fchmod_acl(struct files_struct
*fsp
, int fd
, mode_t mode
)
267 if ( !default_vfs_ops
.fchmod_acl
)
270 result
= default_vfs_ops
.fchmod_acl(fsp
, fd
, mode
);
272 syslog(SYSLOG_PRIORITY
, "fchmod_acl %s mode 0x%x %s%s\n",
274 (result
< 0) ? "failed: " : "",
275 (result
< 0) ? strerror(errno
) : "");