VFS_FULL_AUDIT(8)

NAME
vfs_full_audit - record Samba VFS operations in the system log

SYNOPSIS

vfs objects = full_audit

DESCRIPTION

This VFS module is part of the samba(7) suite.

The vfs_full_audit VFS module records selected client operations to the system log using syslog(3).

vfs_full_audit is able to record the complete set of Samba VFS operations:
    aio_force
    brl_lock_windows
    brl_unlock_windows
    chdir
    close
    closedir
    connect
    create_dfs_pathat
    create_file
    disconnect
    disk_free
    durable_cookie
    durable_disconnect
    durable_reconnect
    fallocate
    fchflags
    fchmod
    fchown
    fcntl
    fdopendir
    fget_compression
    fget_dos_attributes
    fget_nt_acl
    fgetxattr
    file_id_create
    filesystem_sharemode
    flistxattr
    fntimes
    freaddir_attr
    fremovexattr
    fs_capabilities
    fsctl
    fset_dos_attributes
    fset_nt_acl
    fsetxattr
    fs_file_id
    fstat
    fstatat
    fstreaminfo
    fsync_recv
    fsync_send
    ftruncate
    get_alloc_size
    get_dfs_referrals
    get_dos_attributes_recv
    get_dos_attributes_send
    getlock
    get_quota
    get_real_filename
    get_real_filename_at
    get_shadow_copy_data
    getwd
    getxattrat_recv
    getxattrat_send
    is_offline
    lchown
    linkat
    linux_setlease
    lock
    lseek
    lstat
    mkdirat
    mknodat
    ntimes
    offload_read_recv
    offload_read_send
    offload_write_recv
    offload_write_send
    open
    openat
    parent_pathname
    pread
    pread_recv
    pread_send
    pwrite
    pwrite_recv
    pwrite_send
    read
    read_dfs_pathat
    readdir
    readlinkat
    realpath
    recvfile
    removexattr
    renameat
    rewinddir
    sendfile
    set_compression
    set_offline
    set_quota
    snap_check_path
    snap_create
    snap_delete
    stat
    statvfs
    strict_lock_check
    symlinkat
    sys_acl_blob_get_fd
    sys_acl_delete_def_fd
    sys_acl_get_fd
    sys_acl_set_fd
    translate_name
    unlinkat
    write

In addition to these operations, vfs_full_audit recognizes the special operation names "all" and "none ", which refer to all the VFS operations and none of the VFS operations respectively.

If an unknown operation name is used (for example an operation name is miss-spelled), the module will fail to load and clients will be refused connections to a share using this module.

vfs_full_audit records operations in fixed format consisting of fields separated by '|' characters. The format is:

    		smbd_audit: PREFIX|OPERATION|RESULT|FILE

The record fields are:

        • PREFIX - the result of the full_audit:prefix string after variable substitutions

        • OPERATION - the name of the VFS operation

        • RESULT - whether the operation succeeded or failed

        • FILE - the name of the file or directory the operation was performed on

This module is stackable.

OPTIONS

full_audit:prefix = STRING
    Prepend audit messages with STRING. STRING is processed for standard substitution variables listed in smb.conf(5). The default prefix is "%u|%I".

full_audit:success = LIST
    LIST is a list of VFS operations that should be recorded if they succeed. Operations are specified using the names listed above. Operations can be unset by prefixing the names with "!". The default is none operations.

full_audit:failure = LIST
    LIST is a list of VFS operations that should be recorded if they failed. Operations are specified using the names listed above. Operations can be unset by prefixing the names with "!". The default is none operations.

full_audit:facility = FACILITY
    Log messages to the named syslog(3) facility.

full_audit:priority = PRIORITY
    Log messages with the named syslog(3) priority.

full_audit:syslog = true/false
    Log messages to syslog (default) or as a debug level 1 message.

full_audit:log_secdesc = true/false
    Log an sddl form of the security descriptor coming in when a client sets an acl. Defaults to false.

EXAMPLES

Log file and directory open operations on the [records] share using the LOCAL7 facility and ALERT priority, including the username and IP address. Logging excludes the open VFS function on failures:

            [records]
    	path = /data/records
    	vfs objects = full_audit
    	full_audit:prefix = %u|%I
    	full_audit:success = open opendir
    	full_audit:failure = all !open
    	full_audit:facility = LOCAL7
    	full_audit:priority = ALERT

VERSION

This man page is part of version 4.24.2 of the Samba suite.

AUTHOR

The original Samba software and related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed.