Adding upstream version 4.22.0.upstream/4.22.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 422 insertions, 0 deletions

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+'\" t
+.\"     Title: smbd
+.\"    Author: [see the "AUTHOR" section]
+.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
+.\"      Date: 10/23/2023
+.\"    Manual: System Administration tools
+.\"    Source: Samba 4.19.2-git.328.e4c431e307f150600.1.23SUSE-oS15.0-x86_64
+.\"  Language: English
+.\"
+.TH "SMBD" "8" "10/23/2023" "Samba 4\&.19\&.2\-git\&.328\&." "System Administration tools"
+.\" -----------------------------------------------------------------
+.\" * Define some portability stuff
+.\" -----------------------------------------------------------------
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.\" http://bugs.debian.org/507673
+.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.\" -----------------------------------------------------------------
+.\" * set default formatting
+.\" -----------------------------------------------------------------
+.\" disable hyphenation
+.nh
+.\" disable justification (adjust text to left margin only)
+.ad l
+.\" -----------------------------------------------------------------
+.\" * MAIN CONTENT STARTS HERE *
+.\" -----------------------------------------------------------------
+.SH "NAME"
+smbd \- server to provide SMB/CIFS services to clients
+.SH "SYNOPSIS"
+.HP \w'\ 'u
+smbd [\-D|\-\-daemon] [\-i|\-\-interactive] [\-F|\-\-foreground] [\-\-no\-process\-group] [\-b|\-\-build\-options] [\-p\ <port\ number(s)>] [\-P\ <profiling\ level>] [\-d\ <debug\ level>] [\-\-debug\-stdout] [\-\-configfile=<configuration\ file>] [\-\-option=<name>=<value>] [\-l|\-\-log\-basename\ <log\ directory>] [\-\-leak\-report] [\-\-leak\-report\-full] [\-V|\-\-version]
+.SH "DESCRIPTION"
+.PP
+This program is part of the
+\fBsamba\fR(7)
+suite\&.
+.PP
+smbd
+is the server daemon that provides filesharing and printing services to Windows clients\&. The server provides filespace and printer services to clients using the SMB (or CIFS) protocol\&. This is compatible with the LanManager protocol, and can service LanManager clients\&. These include MSCLIENT 3\&.0 for DOS, Windows for Workgroups, Windows 95/98/ME, Windows NT, Windows 2000, OS/2, DAVE for Macintosh, and smbfs for Linux\&.
+.PP
+An extensive description of the services that the server can provide is given in the man page for the configuration file controlling the attributes of those services (see
+\fBsmb.conf\fR(5)\&. This man page will not describe the services, but will concentrate on the administrative aspects of running the server\&.
+.PP
+Please note that there are significant security implications to running this server, and the
+\fBsmb.conf\fR(5)
+manual page should be regarded as mandatory reading before proceeding with installation\&.
+.PP
+A session is created whenever a client requests one\&. Each client gets a copy of the server for each session\&. This copy then services all connections made by the client during that session\&. When all connections from its client are closed, the copy of the server for that client terminates\&.
+.PP
+The configuration file, and any files that it includes, are automatically reloaded every three minutes, if they change\&. One can force a reload by sending a SIGHUP to the server\&. Reloading the configuration file will not affect connections to any service that is already established\&. Either the user will have to disconnect from the service, or
+smbd
+killed and restarted\&.
+.PP
+Instead of sending a SIGHUP signal, a request to reload configuration file may be sent using
+\fBsmbcontrol\fR(1)
+program\&.
+.SH "OPTIONS"
+.PP
+\-D|\-\-daemon
+.RS 4
+If specified, this parameter causes the server to operate as a daemon\&. That is, it detaches itself and runs in the background, fielding requests on the appropriate port\&. Operating the server as a daemon is the recommended way of running
+smbd
+for servers that provide more than casual use file and print services\&. This switch is assumed if
+smbd
+is executed on the command line of a shell\&.
+.RE
+.PP
+\-i|\-\-interactive
+.RS 4
+If this parameter is specified it causes the server to run "interactively", not as a daemon, even if the server is executed on the command line of a shell\&. Setting this parameter negates the implicit daemon mode when run from the command line\&.
+smbd
+will only accept one connection and terminate\&. It will also log to standard output, as if the
+\-S
+parameter had been given\&.
+.RE
+.PP
+\-F|\-\-foreground
+.RS 4
+If specified, this parameter causes the main
+smbd
+process to not daemonize, i\&.e\&. double\-fork and disassociate with the terminal\&. Child processes are still created as normal to service each connection request, but the main process does not exit\&. This operation mode is suitable for running
+smbd
+under process supervisors such as
+supervise
+and
+svscan
+from Daniel J\&. Bernstein\*(Aqs
+daemontools
+package, or the AIX process monitor\&.
+.RE
+.PP
+\-\-no\-process\-group
+.RS 4
+Do not create a new process group for smbd\&.
+.RE
+.PP
+\-b|\-\-build\-options
+.RS 4
+Prints information about how Samba was built\&.
+.RE
+.PP
+\-p|\-\-port<port number(s)>
+.RS 4
+\fIport number(s)\fR
+is a space or comma\-separated list of TCP ports smbd should listen on\&. The default value is taken from the
+\m[blue]\fBports\fR\m[]
+parameter in
+/etc/samba/smb\&.conf
+.sp
+The default ports are 139 (used for SMB over NetBIOS over TCP) and port 445 (used for plain SMB over TCP)\&.
+.RE
+.PP
+\-P|\-\-profiling\-level<profiling level>
+.RS 4
+\fIprofiling level\fR
+is a number specifying the level of profiling data to be collected\&. 0 turns off profiling, 1 turns on counter profiling only, 2 turns on complete profiling, and 3 resets all profiling data\&.
+.RE
+.PP
+\-d|\-\-debuglevel=DEBUGLEVEL, \-\-debug\-stdout
+.RS 4
+\fIlevel\fR
+is an integer from 0 to 10\&. The default value if this parameter is not specified is 0\&.
+.sp
+The higher this value, the more detail will be logged to the log files about the activities of the server\&. At level 0, only critical errors and serious warnings will be logged\&. Level 1 is a reasonable level for day\-to\-day running \- it generates a small amount of information about operations carried out\&.
+.sp
+Levels above 1 will generate considerable amounts of log data, and should only be used when investigating a problem\&. Levels above 3 are designed for use only by developers and generate HUGE amounts of log data, most of which is extremely cryptic\&.
+.sp
+Note that specifying this parameter here will override the
+\m[blue]\fBlog level\fR\m[]
+parameter in the
+/etc/samba/smb\&.conf
+file\&.
+This will redirect debug output to STDOUT\&. By default server daemons are logging to a log file\&.
+.RE
+.PP
+\-\-configfile=CONFIGFILE
+.RS 4
+The file specified contains the configuration details required by the server\&. The information in this file includes server\-specific information such as what printcap file to use, as well as descriptions of all the services that the server is to provide\&. See
+/etc/samba/smb\&.conf
+for more information\&. The default configuration file name is determined at compile time\&.
+.RE
+.PP
+\-\-option=<name>=<value>
+.RS 4
+Set the
+\fBsmb.conf\fR(5)
+option "<name>" to value "<value>" from the command line\&. This overrides compiled\-in defaults and options read from the configuration file\&. If a name or a value includes a space, wrap whole \-\-option=name=value into quotes\&.
+.RE
+.PP
+\-l|\-\-log\-basename=logdirectory
+.RS 4
+Base directory name for log/debug files\&. The extension
+\fB"\&.progname"\fR
+will be appended (e\&.g\&. log\&.smbclient, log\&.smbd, etc\&.\&.\&.)\&. The log file is never removed by the client\&.
+.RE
+.PP
+\-\-leak\-report
+.RS 4
+Enable talloc leak reporting on exit\&.
+.RE
+.PP
+\-\-leak\-report\-full
+.RS 4
+Enable full talloc leak reporting on exit\&.
+.RE
+.PP
+\-V|\-\-version
+.RS 4
+Prints the program version number\&.
+.RE
+.PP
+\-?|\-\-help
+.RS 4
+Print a summary of command line options\&.
+.RE
+.PP
+\-\-usage
+.RS 4
+Display brief usage message\&.
+.RE
+.SH "FILES"
+.PP
+/etc/inetd\&.conf
+.RS 4
+If the server is to be run by the
+inetd
+meta\-daemon, this file must contain suitable startup information for the meta\-daemon\&.
+.RE
+.PP
+/etc/rc
+.RS 4
+or whatever initialization script your system uses)\&.
+.sp
+If running the server as a daemon at startup, this file will need to contain an appropriate startup sequence for the server\&.
+.RE
+.PP
+/etc/services
+.RS 4
+If running the server via the meta\-daemon
+inetd, this file must contain a mapping of service name (e\&.g\&., netbios\-ssn) to service port (e\&.g\&., 139) and protocol type (e\&.g\&., tcp)\&.
+.RE
+.PP
+/usr/local/samba/lib/smb\&.conf
+.RS 4
+This is the default location of the
+\fBsmb.conf\fR(5)
+server configuration file\&. Other common places that systems install this file are
+/usr/samba/lib/smb\&.conf
+and
+/etc/samba/smb\&.conf\&.
+.sp
+This file describes all the services the server is to make available to clients\&. See
+\fBsmb.conf\fR(5)
+for more information\&.
+.RE
+.SH "LIMITATIONS"
+.PP
+On some systems
+smbd
+cannot change uid back to root after a setuid() call\&. Such systems are called trapdoor uid systems\&. If you have such a system, you will be unable to connect from a client (such as a PC) as two different users at once\&. Attempts to connect the second user will result in access denied or similar\&.
+.SH "ENVIRONMENT VARIABLES"
+.PP
+\fBPRINTER\fR
+.RS 4
+If no printer name is specified to printable services, most systems will use the value of this variable (or
+\fBlp\fR
+if this variable is not defined) as the name of the printer to use\&. This is not specific to the server, however\&.
+.RE
+.SH "PAM INTERACTION"
+.PP
+Samba uses PAM for authentication (when presented with a plaintext password), for account checking (is this account disabled?) and for session management\&. The degree too which samba supports PAM is restricted by the limitations of the SMB protocol and the
+\m[blue]\fBobey pam restrictions\fR\m[]
+\fBsmb.conf\fR(5)
+parameter\&. When this is set, the following restrictions apply:
+.RS
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+\fIAccount Validation\fR: All accesses to a samba server are checked against PAM to see if the account is valid, not disabled and is permitted to login at this time\&. This also applies to encrypted logins\&.
+.RE
+.sp
+.RS 4
+.ie n \{\
+\h'-04'\(bu\h'+03'\c
+.\}
+.el \{\
+.sp -1
+.IP \(bu 2.3
+.\}
+\fISession Management\fR: When not using share level security, users must pass PAM\*(Aqs session checks before access is granted\&. Note however, that this is bypassed in share level security\&. Note also that some older pam configuration files may need a line added for session support\&.
+.RE
+.SH "VERSION"
+.PP
+This man page is part of version 4\&.19\&.2\-git\&.328\&.e4c431e307f150600\&.1\&.23SUSE\-oS15\&.0\-x86_64 of the Samba suite\&.
+.SH "DIAGNOSTICS"
+.PP
+Most diagnostics issued by the server are logged in a specified log file\&. The log file name is specified at compile time, but may be overridden on the command line\&.
+.PP
+The number and nature of diagnostics available depends on the debug level used by the server\&. If you have problems, set the debug level to 3 and peruse the log files\&.
+.PP
+Most messages are reasonably self\-explanatory\&. Unfortunately, at the time this man page was created, there are too many diagnostics available in the source code to warrant describing each and every diagnostic\&. At this stage your best bet is still to grep the source code and inspect the conditions that gave rise to the diagnostics you are seeing\&.
+.SH "TDB FILES"
+.PP
+Samba stores it\*(Aqs data in several TDB (Trivial Database) files, usually located in
+/var/lib/samba\&.
+.PP
+(*) information persistent across restarts (but not necessarily important to backup)\&.
+.PP
+account_policy\&.tdb*
+.RS 4
+NT account policy settings such as pw expiration, etc\&.\&.\&.
+.RE
+.PP
+brlock\&.tdb
+.RS 4
+byte range locks
+.RE
+.PP
+browse\&.dat
+.RS 4
+browse lists
+.RE
+.PP
+gencache\&.tdb
+.RS 4
+generic caching db
+.RE
+.PP
+group_mapping\&.tdb*
+.RS 4
+group mapping information
+.RE
+.PP
+locking\&.tdb
+.RS 4
+share modes & oplocks
+.RE
+.PP
+login_cache\&.tdb*
+.RS 4
+bad pw attempts
+.RE
+.PP
+messages\&.tdb
+.RS 4
+Samba messaging system
+.RE
+.PP
+netsamlogon_cache\&.tdb*
+.RS 4
+cache of user net_info_3 struct from net_samlogon() request (as a domain member)
+.RE
+.PP
+ntdrivers\&.tdb*
+.RS 4
+installed printer drivers
+.RE
+.PP
+ntforms\&.tdb*
+.RS 4
+installed printer forms
+.RE
+.PP
+ntprinters\&.tdb*
+.RS 4
+installed printer information
+.RE
+.PP
+printing/
+.RS 4
+directory containing tdb per print queue of cached lpq output
+.RE
+.PP
+registry\&.tdb
+.RS 4
+Windows registry skeleton (connect via regedit\&.exe)
+.RE
+.PP
+smbXsrv_session_global\&.tdb
+.RS 4
+session information (e\&.g\&. support for \*(Aqutmp = yes\*(Aq)
+.RE
+.PP
+smbXsrv_tcon_global\&.tdb
+.RS 4
+share connections (used to enforce max connections, etc\&.\&.\&.)
+.RE
+.PP
+smbXsrv_open_global\&.tdb
+.RS 4
+open file handles (used durable handles, etc\&.\&.\&.)
+.RE
+.PP
+share_info\&.tdb*
+.RS 4
+share acls
+.RE
+.PP
+winbindd_cache\&.tdb
+.RS 4
+winbindd\*(Aqs cache of user lists, etc\&.\&.\&.
+.RE
+.PP
+winbindd_idmap\&.tdb*
+.RS 4
+winbindd\*(Aqs local idmap db
+.RE
+.PP
+wins\&.dat*
+.RS 4
+wins database when \*(Aqwins support = yes\*(Aq
+.RE
+.SH "SIGNALS"
+.PP
+Sending the
+smbd
+a SIGHUP will cause it to reload its
+smb\&.conf
+configuration file within a short period of time\&.
+.PP
+To shut down a user\*(Aqs
+smbd
+process it is recommended that
+SIGKILL (\-9)
+\fINOT\fR
+be used, except as a last resort, as this may leave the shared memory area in an inconsistent state\&. The safe way to terminate an
+smbd
+is to send it a SIGTERM (\-15) signal and wait for it to die on its own\&.
+.PP
+The debug log level of
+smbd
+may be raised or lowered using
+\fBsmbcontrol\fR(1)
+program (SIGUSR[1|2] signals are no longer used since Samba 2\&.2)\&. This is to allow transient problems to be diagnosed, whilst still running at a normally low log level\&.
+.PP
+Note that as the signal handlers send a debug write, they are not re\-entrant in
+smbd\&. This you should wait until
+smbd
+is in a state of waiting for an incoming SMB before issuing them\&. It is possible to make the signal handlers safe by un\-blocking the signals before the select call and re\-blocking them after, however this would affect performance\&.
+.SH "SEE ALSO"
+.PP
+\fBhosts_access\fR(5),
+\fBinetd\fR(8),
+\fBnmbd\fR(8),
+\fBsmb.conf\fR(5),
+\fBsmbclient\fR(1),
+\fBtestparm\fR(1), and the Internet RFC\*(Aqs
+rfc1001\&.txt,
+rfc1002\&.txt\&. In addition the CIFS (formerly SMB) specification is available as a link from the Web page
+https://www\&.samba\&.org/cifs/\&.
+.SH "AUTHOR"
+.PP
+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\&.