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Diff for /embedaddon/sudo/doc/sudo.cat between versions 1.1.1.3 and 1.1.1.6

version 1.1.1.3, 2012/10/09 09:29:52	version 1.1.1.6, 2014/06/15 16:12:54
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SSYYNNOOPPSSIISS	SSYYNNOOPPSSIISS
ssuuddoo --hh \| --KK \| --kk \| --VV	ssuuddoo --hh \| --KK \| --kk \| --VV
ssuuddoo --vv [--AAkknnSS] [--aa _a_u_t_h___t_y_p_e] [--gg _g_r_o_u_p _n_a_m_e \| _#_g_i_d] [--pp _p_r_o_m_p_t]	ssuuddoo --vv [--AAkknnSS] [--aa _t_y_p_e] [--gg _g_r_o_u_p] [--hh _h_o_s_t] [--pp _p_r_o_m_p_t] [--uu _u_s_e_r]
[--uu _u_s_e_r _n_a_m_e \| _#_u_i_d]	ssuuddoo --ll [--AAkknnSS] [--aa _t_y_p_e] [--gg _g_r_o_u_p] [--hh _h_o_s_t] [--pp _p_r_o_m_p_t] [--UU _u_s_e_r]
ssuuddoo --ll[_l] [--AAkknnSS] [--aa _a_u_t_h___t_y_p_e] [--gg _g_r_o_u_p _n_a_m_e \| _#_g_i_d] [--pp _p_r_o_m_p_t]	[--uu _u_s_e_r] [_c_o_m_m_a_n_d]
[--UU _u_s_e_r _n_a_m_e] [--uu _u_s_e_r _n_a_m_e \| _#_u_i_d] [_c_o_m_m_a_n_d]	ssuuddoo [--AAbbEEHHnnPPSS] [--aa _t_y_p_e] [--CC _n_u_m] [--cc _c_l_a_s_s] [--gg _g_r_o_u_p] [--hh _h_o_s_t]
ssuuddoo [--AAbbEEHHnnPPSS] [--aa _a_u_t_h___t_y_p_e] [--CC _f_d] [--cc _c_l_a_s_s \| _-]	[--pp _p_r_o_m_p_t] [--rr _r_o_l_e] [--tt _t_y_p_e] [--uu _u_s_e_r] [_V_A_R=_v_a_l_u_e] [--ii \| --ss]
[--gg _g_r_o_u_p _n_a_m_e \| _#_g_i_d] [--pp _p_r_o_m_p_t] [--rr _r_o_l_e] [--tt _t_y_p_e]	[_c_o_m_m_a_n_d]
[--uu _u_s_e_r _n_a_m_e \| _#_u_i_d] [VVAARR=_v_a_l_u_e] --ii \| --ss [_c_o_m_m_a_n_d]	ssuuddooeeddiitt [--AAkknnSS] [--aa _t_y_p_e] [--CC _n_u_m] [--cc _c_l_a_s_s] [--gg _g_r_o_u_p] [--hh _h_o_s_t]
ssuuddooeeddiitt [--AAnnSS] [--aa _a_u_t_h___t_y_p_e] [--CC _f_d] [--cc _c_l_a_s_s \| _-]	[--pp _p_r_o_m_p_t] [--uu _u_s_e_r] _f_i_l_e _._._.
[--gg _g_r_o_u_p _n_a_m_e \| _#_g_i_d] [--pp _p_r_o_m_p_t] [--uu _u_s_e_r _n_a_m_e \| _#_u_i_d] file
...

DDEESSCCRRIIPPTTIIOONN	DDEESSCCRRIIPPTTIIOONN
ssuuddoo allows a permitted user to execute a _c_o_m_m_a_n_d as the superuser or	ssuuddoo allows a permitted user to execute a _c_o_m_m_a_n_d as the superuser or
Line 24 DDEESSCCRRIIPPTTIIOONN	Line 22 DDEESSCCRRIIPPTTIIOONN
input/output logging. Third parties can develop and distribute their own	input/output logging. Third parties can develop and distribute their own
policy and I/O logging plugins to work seamlessly with the ssuuddoo front	policy and I/O logging plugins to work seamlessly with the ssuuddoo front
end. The default security policy is _s_u_d_o_e_r_s, which is configured via the	end. The default security policy is _s_u_d_o_e_r_s, which is configured via the
file _/_e_t_c_/_s_u_d_o_e_r_s, or via LDAP. See the _P_L_U_G_I_N_S section for more	file _/_e_t_c_/_s_u_d_o_e_r_s, or via LDAP. See the _P_l_u_g_i_n_s section for more
information.	information.

The security policy determines what privileges, if any, a user has to run	The security policy determines what privileges, if any, a user has to run
Line 48 DDEESSCCRRIIPPTTIIOONN	Line 46 DDEESSCCRRIIPPTTIIOONN

The options are as follows:	The options are as follows:

--AA Normally, if ssuuddoo requires a password, it will read it from	--AA, ----aasskkppaassss
	Normally, if ssuuddoo requires a password, it will read it from
the user's terminal. If the --AA (_a_s_k_p_a_s_s) option is	the user's terminal. If the --AA (_a_s_k_p_a_s_s) option is
specified, a (possibly graphical) helper program is executed	specified, a (possibly graphical) helper program is executed
to read the user's password and output the password to the	to read the user's password and output the password to the
standard output. If the SUDO_ASKPASS environment variable is	standard output. If the SUDO_ASKPASS environment variable is
set, it specifies the path to the helper program. Otherwise,	set, it specifies the path to the helper program. Otherwise,
if _/_e_t_c_/_s_u_d_o_._c_o_n_f contains a line specifying the askpass	if sudo.conf(4) contains a line specifying the askpass
program, that value will be used. For example:	program, that value will be used. For example:

# Path to askpass helper program	# Path to askpass helper program
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If no askpass program is available, ssuuddoo will exit with an	If no askpass program is available, ssuuddoo will exit with an
error.	error.

--aa _t_y_p_e The --aa (_a_u_t_h_e_n_t_i_c_a_t_i_o_n _t_y_p_e) option causes ssuuddoo to use the	--aa _t_y_p_e, ----aauutthh--ttyyppee=_t_y_p_e
specified authentication type when validating the user, as	Use the specified BSD authentication _t_y_p_e when validating the
allowed by _/_e_t_c_/_l_o_g_i_n_._c_o_n_f. The system administrator may	user, if allowed by _/_e_t_c_/_l_o_g_i_n_._c_o_n_f. The system
specify a list of sudo-specific authentication methods by	administrator may specify a list of sudo-specific
adding an ``auth-sudo'' entry in _/_e_t_c_/_l_o_g_i_n_._c_o_n_f. This	authentication methods by adding an ``auth-sudo'' entry in
option is only available on systems that support BSD	_/_e_t_c_/_l_o_g_i_n_._c_o_n_f. This option is only available on systems
authentication.	that support BSD authentication.

--bb The --bb (_b_a_c_k_g_r_o_u_n_d) option tells ssuuddoo to run the given	--bb, ----bbaacckkggrroouunndd
command in the background. Note that if you use the --bb	Run the given command in the background. Note that it is not
option you cannot use shell job control to manipulate the	possible to use shell job control to manipulate background
process. Most interactive commands will fail to work	processes started by ssuuddoo. Most interactive commands will
properly in background mode.	fail to work properly in background mode.

--CC _f_d Normally, ssuuddoo will close all open file descriptors other	--CC _n_u_m, ----cclloossee--ffrroomm=_n_u_m
than standard input, standard output and standard error. The	Close all file descriptors greater than or equal to _n_u_m
--CC (_c_l_o_s_e _f_r_o_m) option allows the user to specify a starting	before executing a command. Values less than three are not
point above the standard error (file descriptor three).	permitted. By default, ssuuddoo will close all open file
Values less than three are not permitted. The security	descriptors other than standard input, standard output and
policy may restrict the user's ability to use the --CC option.	standard error when executing a command. The security policy
The _s_u_d_o_e_r_s policy only permits use of the --CC option when the	may restrict the user's ability to use this option. The
	_s_u_d_o_e_r_s policy only permits use of the --CC option when the
administrator has enabled the _c_l_o_s_e_f_r_o_m___o_v_e_r_r_i_d_e option.	administrator has enabled the _c_l_o_s_e_f_r_o_m___o_v_e_r_r_i_d_e option.

--cc _c_l_a_s_s The --cc (_c_l_a_s_s) option causes ssuuddoo to run the specified	--cc _c_l_a_s_s, ----llooggiinn--ccllaassss=_c_l_a_s_s
command with resources limited by the specified login class.	Run the command with resource limits and scheduling priority
The _c_l_a_s_s argument can be either a class name as defined in	of the specified login _c_l_a_s_s. The _c_l_a_s_s argument can be
_/_e_t_c_/_l_o_g_i_n_._c_o_n_f, or a single `-' character. Specifying a	either a class name as defined in _/_e_t_c_/_l_o_g_i_n_._c_o_n_f, or a
_c_l_a_s_s of - indicates that the command should be run	single `-' character. If _c_l_a_s_s is --, the default login class
restricted by the default login capabilities for the user the	of the target user will be used. Otherwise, the command must
command is run as. If the _c_l_a_s_s argument specifies an	be run as the superuser (user ID 0), or ssuuddoo must be run from
existing user class, the command must be run as root, or the	a shell that is already running as the superuser. If the
ssuuddoo command must be run from a shell that is already root.	command is being run as a login shell, additional
This option is only available on systems with BSD login	_/_e_t_c_/_l_o_g_i_n_._c_o_n_f settings, such as the umask and environment
classes.	variables, will be applied, if present. This option is only
	available on systems with BSD login classes.

--EE The --EE (_p_r_e_s_e_r_v_e _e_n_v_i_r_o_n_m_e_n_t) option indicates to the	--EE, ----pprreesseerrvvee--eennvv
security policy that the user wishes to preserve their	Indicates to the security policy that the user wishes to
existing environment variables. The security policy may	preserve their existing environment variables. The security
return an error if the --EE option is specified and the user	policy may return an error if the user does not have
does not have permission to preserve the environment.	permission to preserve the environment.

--ee The --ee (_e_d_i_t) option indicates that, instead of running a	--ee, ----eeddiitt Edit one or more files instead of running a command. In lieu
command, the user wishes to edit one or more files. In lieu	of a path name, the string "sudoedit" is used when consulting
of a command, the string "sudoedit" is used when consulting
the security policy. If the user is authorized by the	the security policy. If the user is authorized by the
policy, the following steps are taken:	policy, the following steps are taken:

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version, the user will receive a warning and the edited copy	version, the user will receive a warning and the edited copy
will remain in a temporary file.	will remain in a temporary file.

--gg _g_r_o_u_p Normally, ssuuddoo runs a command with the primary group set to	--gg _g_r_o_u_p, ----ggrroouupp=_g_r_o_u_p
the one specified by the password database for the user the	Run the command with the primary group set to _g_r_o_u_p instead
command is being run as (by default, root). The --gg (_g_r_o_u_p)	of the primary group specified by the target user's password
option causes ssuuddoo to run the command with the primary group	database entry. The _g_r_o_u_p may be either a group name or a
set to _g_r_o_u_p instead. To specify a _g_i_d instead of a _g_r_o_u_p	numeric group ID (GID) prefixed with the `#' character (e.g.
_n_a_m_e, use _#_g_i_d. When running commands as a _g_i_d, many shells	#0 for GID 0). When running a command as a GID, many shells
require that the `#' be escaped with a backslash (`\'). If	require that the `#' be escaped with a backslash (`\'). If
no --uu option is specified, the command will be run as the	no --uu option is specified, the command will be run as the
invoking user (not root). In either case, the primary group	invoking user. In either case, the primary group will be set
will be set to _g_r_o_u_p.	to _g_r_o_u_p.

--HH The --HH (_H_O_M_E) option requests that the security policy set	--HH, ----sseett--hhoommee
the HOME environment variable to the home directory of the	Request that the security policy set the HOME environment
target user (root by default) as specified by the password	variable to the home directory specified by the target user's
database. Depending on the policy, this may be the default	password database entry. Depending on the policy, this may
behavior.	be the default behavior.

--hh The --hh (_h_e_l_p) option causes ssuuddoo to print a short help	--hh, ----hheellpp Display a short help message to the standard output and exit.
message to the standard output and exit.

--ii [_c_o_m_m_a_n_d]	--hh _h_o_s_t, ----hhoosstt=_h_o_s_t
The --ii (_s_i_m_u_l_a_t_e _i_n_i_t_i_a_l _l_o_g_i_n) option runs the shell	Run the command on the specified _h_o_s_t if the security policy
specified by the password database entry of the target user	plugin supports remote commands. Note that the _s_u_d_o_e_r_s
as a login shell. This means that login-specific resource	plugin does not currently support running remote commands.
files such as _._p_r_o_f_i_l_e or _._l_o_g_i_n will be read by the shell.	This may also be used in conjunction with the --ll option to
If a command is specified, it is passed to the shell for	list a user's privileges for the remote host.
execution via the shell's --cc option. If no command is
specified, an interactive shell is executed. ssuuddoo attempts
to change to that user's home directory before running the
shell. The security policy shall initialize the environment
to a minimal set of variables, similar to what is present
when a user logs in. The _C_o_m_m_a_n_d _E_n_v_i_r_o_n_m_e_n_t section in the
sudoers(4) manual documents how the --ii option affects the
environment in which a command is run when the _s_u_d_o_e_r_s policy
is in use.

--KK The --KK (sure _k_i_l_l) option is like --kk except that it removes	--ii, ----llooggiinn
the user's cached credentials entirely and may not be used in	Run the shell specified by the target user's password
	database entry as a login shell. This means that login-
	specific resource files such as _._p_r_o_f_i_l_e or _._l_o_g_i_n will be
	read by the shell. If a command is specified, it is passed
	to the shell for execution via the shell's --cc option. If no
	command is specified, an interactive shell is executed. ssuuddoo
	attempts to change to that user's home directory before
	running the shell. The command is run with an environment
	similar to the one a user would receive at log in. The
	_C_o_m_m_a_n_d _E_n_v_i_r_o_n_m_e_n_t section in the sudoers(4) manual
	documents how the --ii option affects the environment in which
	a command is run when the _s_u_d_o_e_r_s policy is in use.

	--KK, ----rreemmoovvee--ttiimmeessttaammpp
	Similar to the --kk option, except that it removes the user's
	cached credentials entirely and may not be used in
conjunction with a command or other option. This option does	conjunction with a command or other option. This option does
not require a password. Not all security policies support	not require a password. Not all security policies support
credential caching.	credential caching.

--kk [_c_o_m_m_a_n_d]	--kk, ----rreesseett--ttiimmeessttaammpp
When used alone, the --kk (_k_i_l_l) option to ssuuddoo invalidates the	When used without a command, invalidates the user's cached
user's cached credentials. The next time ssuuddoo is run a	credentials. In other words, the next time ssuuddoo is run a
password will be required. This option does not require a	password will be required. This option does not require a
password and was added to allow a user to revoke ssuuddoo	password and was added to allow a user to revoke ssuuddoo
permissions from a _._l_o_g_o_u_t file. Not all security policies	permissions from a _._l_o_g_o_u_t file.
support credential caching.

When used in conjunction with a command or an option that may	When used in conjunction with a command or an option that may
require a password, the --kk option will cause ssuuddoo to ignore	require a password, this option will cause ssuuddoo to ignore the
the user's cached credentials. As a result, ssuuddoo will prompt	user's cached credentials. As a result, ssuuddoo will prompt for
for a password (if one is required by the security policy)	a password (if one is required by the security policy) and
and will not update the user's cached credentials.	will not update the user's cached credentials.

--ll[ll] [_c_o_m_m_a_n_d]	Not all security policies support credential caching.
If no _c_o_m_m_a_n_d is specified, the --ll (_l_i_s_t) option will list
the allowed (and forbidden) commands for the invoking user	--ll, ----lliisstt If no _c_o_m_m_a_n_d is specified, list the allowed (and forbidden)
(or the user specified by the --UU option) on the current host.	commands for the invoking user (or the user specified by the
	--UU option) on the current host. A longer list format is used
	if this option is specified multiple times and the security
	policy supports a verbose output format.

If a _c_o_m_m_a_n_d is specified and is permitted by the security	If a _c_o_m_m_a_n_d is specified and is permitted by the security
policy, the fully-qualified path to the command is displayed	policy, the fully-qualified path to the command is displayed
along with any command line arguments. If _c_o_m_m_a_n_d is	along with any command line arguments. If _c_o_m_m_a_n_d is
specified but not allowed, ssuuddoo will exit with a status value	specified but not allowed, ssuuddoo will exit with a status value
of 1. If the --ll option is specified with an _l argument (i.e.	of 1.
--llll), or if --ll is specified multiple times, a longer list
format is used.

--nn The --nn (_n_o_n_-_i_n_t_e_r_a_c_t_i_v_e) option prevents ssuuddoo from prompting	--nn, ----nnoonn--iinntteerraaccttiivvee
the user for a password. If a password is required for the	Avoid prompting the user for input of any kind. If a
command to run, ssuuddoo will display an error message and exit.	password is required for the command to run, ssuuddoo will
	display an error message and exit.

--PP The --PP (_p_r_e_s_e_r_v_e _g_r_o_u_p _v_e_c_t_o_r) option causes ssuuddoo to preserve	--PP, ----pprreesseerrvvee--ggrroouuppss
the invoking user's group vector unaltered. By default, the	Preserve the invoking user's group vector unaltered. By
_s_u_d_o_e_r_s policy will initialize the group vector to the list	default, the _s_u_d_o_e_r_s policy will initialize the group vector
of groups the target user is in. The real and effective	to the list of groups the target user is a member of. The
group IDs, however, are still set to match the target user.	real and effective group IDs, however, are still set to match
	the target user.

--pp _p_r_o_m_p_t The --pp (_p_r_o_m_p_t) option allows you to override the default	--pp _p_r_o_m_p_t, ----pprroommpptt=_p_r_o_m_p_t
password prompt and use a custom one. The following percent	Use a custom password prompt with optional escape sequences.
(`%') escapes are supported by the _s_u_d_o_e_r_s policy:	The following percent (`%') escape sequences are supported by
	the _s_u_d_o_e_r_s policy:

%H expanded to the host name including the domain name (on	%H expanded to the host name including the domain name (on
if the machine's host name is fully qualified or the _f_q_d_n	if the machine's host name is fully qualified or the _f_q_d_n
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%% two consecutive `%' characters are collapsed into a	%% two consecutive `%' characters are collapsed into a
single `%' character	single `%' character

The prompt specified by the --pp option will override the	The custom prompt will override the system password prompt on
system password prompt on systems that support PAM unless the	systems that support PAM unless the _p_a_s_s_p_r_o_m_p_t___o_v_e_r_r_i_d_e flag
_p_a_s_s_p_r_o_m_p_t___o_v_e_r_r_i_d_e flag is disabled in _s_u_d_o_e_r_s.	is disabled in _s_u_d_o_e_r_s.

--rr _r_o_l_e The --rr (_r_o_l_e) option causes the new (SELinux) security	--rr _r_o_l_e, ----rroollee=_r_o_l_e
context to have the role specified by _r_o_l_e.	Run the command with an SELinux security context that
	includes the specified _r_o_l_e.

--SS The --SS (_s_t_d_i_n) option causes ssuuddoo to read the password from	--SS, ----ssttddiinn
the standard input instead of the terminal device. The	Write the prompt to the standard error and read the password
password must be followed by a newline character.	from the standard input instead of using the terminal device.
	The password must be followed by a newline character.

--ss [_c_o_m_m_a_n_d]	--ss, ----sshheellll
The --ss (_s_h_e_l_l) option runs the shell specified by the SHELL	Run the shell specified by the SHELL environment variable if
environment variable if it is set or the shell as specified	it is set or the shell specified by the invoking user's
in the password database. If a command is specified, it is	password database entry. If a command is specified, it is
passed to the shell for execution via the shell's --cc option.	passed to the shell for execution via the shell's --cc option.
If no command is specified, an interactive shell is executed.	If no command is specified, an interactive shell is executed.

--tt _t_y_p_e The --tt (_t_y_p_e) option causes the new (SELinux) security	--tt _t_y_p_e, ----ttyyppee=_t_y_p_e
context to have the type specified by _t_y_p_e. If no type is	Run the command with an SELinux security context that
specified, the default type is derived from the specified	includes the specified _t_y_p_e. If no _t_y_p_e is specified, the
role.	default type is derived from the role.

--UU _u_s_e_r The --UU (_o_t_h_e_r _u_s_e_r) option is used in conjunction with the --ll	--UU _u_s_e_r, ----ootthheerr--uusseerr=_u_s_e_r
option to specify the user whose privileges should be listed.	Used in conjunction with the --ll option to list the privileges
The security policy may restrict listing other users'	for _u_s_e_r instead of for the invoking user. The security
privileges. The _s_u_d_o_e_r_s policy only allows root or a user	policy may restrict listing other users' privileges. The
with the ALL privilege on the current host to use this	_s_u_d_o_e_r_s policy only allows root or a user with the ALL
option.	privilege on the current host to use this option.

--uu _u_s_e_r The --uu (_u_s_e_r) option causes ssuuddoo to run the specified command	--uu _u_s_e_r, ----uusseerr=_u_s_e_r
as a user other than _r_o_o_t. To specify a _u_i_d instead of a	Run the command as a user other than the default target user
_u_s_e_r _n_a_m_e, _#_u_i_d. When running commands as a _u_i_d, many shells	(usually _r_o_o_t _)_. The _u_s_e_r may be either a user name or a
require that the `#' be escaped with a backslash (`\').	numeric user ID (UID) prefixed with the `#' character (e.g.
Security policies may restrict _u_i_ds to those listed in the	#0 for UID 0). When running commands as a UID, many shells
password database. The _s_u_d_o_e_r_s policy allows _u_i_ds that are	require that the `#' be escaped with a backslash (`\'). Some
	security policies may restrict UIDs to those listed in the
	password database. The _s_u_d_o_e_r_s policy allows UIDs that are
not in the password database as long as the _t_a_r_g_e_t_p_w option	not in the password database as long as the _t_a_r_g_e_t_p_w option
is not set. Other security policies may not support this.	is not set. Other security policies may not support this.

--VV The --VV (_v_e_r_s_i_o_n) option causes ssuuddoo to print its version	--VV, ----vveerrssiioonn
string and the version string of the security policy plugin	Print the ssuuddoo version string as well as the version string
and any I/O plugins. If the invoking user is already root	of the security policy plugin and any I/O plugins. If the
the --VV option will display the arguments passed to configure	invoking user is already root the --VV option will display the
when ssuuddoo was built and plugins may display more verbose	arguments passed to configure when ssuuddoo was built and plugins
information such as default options.	may display more verbose information such as default options.

--vv When given the --vv (_v_a_l_i_d_a_t_e) option, ssuuddoo will update the	--vv, ----vvaalliiddaattee
user's cached credentials, authenticating the user's password	Update the user's cached credentials, authenticating the user
if necessary. For the _s_u_d_o_e_r_s plugin, this extends the ssuuddoo	if necessary. For the _s_u_d_o_e_r_s plugin, this extends the ssuuddoo
timeout for another 5 minutes (or whatever the timeout is set	timeout for another 5 minutes by default, but does not run a
to by the security policy) but does not run a command. Not	command. Not all security policies support cached
all security policies support cached credentials.	credentials.

---- The ---- option indicates that ssuuddoo should stop processing	---- The ---- option indicates that ssuuddoo should stop processing
command line arguments.	command line arguments.

Environment variables to be set for the command may also be passed on the	Environment variables to be set for the command may also be passed on the
command line in the form of VVAARR=_v_a_l_u_e, e.g.	command line in the form of _V_A_R=_v_a_l_u_e, e.g.
LLDD__LLIIBBRRAARRYY__PPAATTHH=_/_u_s_r_/_l_o_c_a_l_/_p_k_g_/_l_i_b. Variables passed on the command line	LD_LIBRARY_PATH=_/_u_s_r_/_l_o_c_a_l_/_p_k_g_/_l_i_b. Variables passed on the command line
are subject to the same restrictions as normal environment variables with	are subject to restrictions imposed by the security policy plugin. The
one important exception. If the _s_e_t_e_n_v option is set in _s_u_d_o_e_r_s, the	_s_u_d_o_e_r_s policy subjects variables passed on the command line to the same
command to be run has the SETENV tag set or the command matched is ALL,	restrictions as normal environment variables with one important
the user may set variables that would otherwise be forbidden. See	exception. If the _s_e_t_e_n_v option is set in _s_u_d_o_e_r_s, the command to be run
sudoers(4) for more information.	has the SETENV tag set or the command matched is ALL, the user may set
	variables that would otherwise be forbidden. See sudoers(4) for more
	information.

CCOOMMMMAANNDD EEXXEECCUUTTIIOONN	CCOOMMMMAANNDD EEXXEECCUUTTIIOONN
When ssuuddoo executes a command, the security policy specifies the execution	When ssuuddoo executes a command, the security policy specifies the execution
envionment for the command. Typically, the real and effective uid and	environment for the command. Typically, the real and effective user and
gid are set to match those of the target user, as specified in the	group and IDs are set to match those of the target user, as specified in
password database, and the group vector is initialized based on the group	the password database, and the group vector is initialized based on the
database (unless the --PP option was specified).	group database (unless the --PP option was specified).

The following parameters may be specified by security policy:	The following parameters may be specified by security policy:

Line 333 CCOOMMMMAANNDD EEXXEECCUUTTIIOONN	Line 348 CCOOMMMMAANNDD EEXXEECCUUTTIIOONN
environment as described above, and calls the execve system call in the	environment as described above, and calls the execve system call in the
child process. The main ssuuddoo process waits until the command has	child process. The main ssuuddoo process waits until the command has
completed, then passes the command's exit status to the security policy's	completed, then passes the command's exit status to the security policy's
close method and exits. If an I/O logging plugin is configured, a new	close function and exits. If an I/O logging plugin is configured or if
pseudo-terminal (``pty'') is created and a second ssuuddoo process is used to	the security policy explicitly requests it, a new pseudo-terminal
relay job control signals between the user's existing pty and the new pty	(``pty'') is created and a second ssuuddoo process is used to relay job
the command is being run in. This extra process makes it possible to,	control signals between the user's existing pty and the new pty the
for example, suspend and resume the command. Without it, the command	command is being run in. This extra process makes it possible to, for
would be in what POSIX terms an ``orphaned process group'' and it would	example, suspend and resume the command. Without it, the command would
not receive any job control signals.	be in what POSIX terms an ``orphaned process group'' and it would not
	receive any job control signals. As a special case, if the policy plugin
	does not define a close function and no pty is required, ssuuddoo will
	execute the command directly instead of calling fork(2) first. The
	_s_u_d_o_e_r_s policy plugin will only define a close function when I/O logging
	is enabled, a pty is required, or the _p_a_m___s_e_s_s_i_o_n or _p_a_m___s_e_t_c_r_e_d options
	are enabled. Note that _p_a_m___s_e_s_s_i_o_n and _p_a_m___s_e_t_c_r_e_d are enabled by
	default on systems using PAM.

SSiiggnnaall hhaannddlliinngg	SSiiggnnaall hhaannddlliinngg
Because the command is run as a child of the ssuuddoo process, ssuuddoo will	When the command is run as a child of the ssuuddoo process, ssuuddoo will relay
relay signals it receives to the command. Unless the command is being	signals it receives to the command. Unless the command is being run in a
run in a new pty, the SIGHUP, SIGINT and SIGQUIT signals are not relayed	new pty, the SIGHUP, SIGINT and SIGQUIT signals are not relayed unless
unless they are sent by a user process, not the kernel. Otherwise, the	they are sent by a user process, not the kernel. Otherwise, the command
command would receive SIGINT twice every time the user entered control-C.	would receive SIGINT twice every time the user entered control-C. Some
Some signals, such as SIGSTOP and SIGKILL, cannot be caught and thus will	signals, such as SIGSTOP and SIGKILL, cannot be caught and thus will not
not be relayed to the command. As a general rule, SIGTSTP should be used	be relayed to the command. As a general rule, SIGTSTP should be used
instead of SIGSTOP when you wish to suspend a command being run by ssuuddoo.	instead of SIGSTOP when you wish to suspend a command being run by ssuuddoo.

As a special case, ssuuddoo will not relay signals that were sent by the	As a special case, ssuuddoo will not relay signals that were sent by the
command it is running. This prevents the command from accidentally	command it is running. This prevents the command from accidentally
killing itself. On some systems, the reboot(1m) command sends SIGTERM to	killing itself. On some systems, the reboot(1m) command sends SIGTERM to
all non-system processes other than itself before rebooting the systyem.	all non-system processes other than itself before rebooting the system.
This prevents ssuuddoo from relaying the SIGTERM signal it received back to	This prevents ssuuddoo from relaying the SIGTERM signal it received back to
reboot(1m), which might then exit before the system was actually rebooted,	reboot(1m), which might then exit before the system was actually rebooted,
leaving it in a half-dead state similar to single user mode. Note,	leaving it in a half-dead state similar to single user mode. Note,
Line 365 CCOOMMMMAANNDD EEXXEECCUUTTIIOONN	Line 387 CCOOMMMMAANNDD EEXXEECCUUTTIIOONN
run using the eexxeecc() family of functions instead of ssyysstteemm() (which	run using the eexxeecc() family of functions instead of ssyysstteemm() (which
interposes a shell between the command and the calling process).	interposes a shell between the command and the calling process).

PPLLUUGGIINNSS	If no I/O logging plugins are loaded and the policy plugin has not
Plugins are dynamically loaded based on the contents of the	defined a cclloossee() function, set a command timeout or required that the
_/_e_t_c_/_s_u_d_o_._c_o_n_f file. If no _/_e_t_c_/_s_u_d_o_._c_o_n_f file is present, or it	command be run in a new pty, ssuuddoo may execute the command directly
contains no Plugin lines, ssuuddoo will use the traditional _s_u_d_o_e_r_s security	instead of running it as a child process.
policy and I/O logging, which corresponds to the following _/_e_t_c_/_s_u_d_o_._c_o_n_f
file.

#	PPlluuggiinnss
# Default /etc/sudo.conf file	Plugins may be specified via Plugin directives in the sudo.conf(4) file.
#	They may be loaded as dynamic shared objects (on systems that support
# Format:	them), or compiled directly into the ssuuddoo binary. If no sudo.conf(4)
# Plugin plugin_name plugin_path plugin_options ...	file is present, or it contains no Plugin lines, ssuuddoo will use the
# Path askpass /path/to/askpass	traditional _s_u_d_o_e_r_s security policy and I/O logging. See the
# Path noexec /path/to/sudo_noexec.so	sudo.conf(4) manual for details of the _/_e_t_c_/_s_u_d_o_._c_o_n_f file and the
# Debug sudo /var/log/sudo_debug all@warn	sudo_plugin(1m) manual for more information about the ssuuddoo plugin
# Set disable_coredump true	architecture.
#
# The plugin_path is relative to /usr/local/libexec unless
# fully qualified.
# The plugin_name corresponds to a global symbol in the plugin
# that contains the plugin interface structure.
# The plugin_options are optional.
#
Plugin policy_plugin sudoers.so
Plugin io_plugin sudoers.so

A Plugin line consists of the Plugin keyword, followed by the _s_y_m_b_o_l___n_a_m_e
and the _p_a_t_h to the shared object containing the plugin. The _s_y_m_b_o_l___n_a_m_e
is the name of the struct policy_plugin or struct io_plugin in the plugin
shared object. The _p_a_t_h may be fully qualified or relative. If not
fully qualified it is relative to the _/_u_s_r_/_l_o_c_a_l_/_l_i_b_e_x_e_c directory. Any
additional parameters after the _p_a_t_h are passed as arguments to the
plugin's _o_p_e_n function. Lines that don't begin with Plugin, Path, Debug,
or Set are silently ignored.

For more information, see the sudo_plugin(1m) manual.

PPAATTHHSS
A Path line consists of the Path keyword, followed by the name of the
path to set and its value. E.g.

Path noexec /usr/local/libexec/sudo_noexec.so
Path askpass /usr/X11R6/bin/ssh-askpass

The following plugin-agnostic paths may be set in the _/_e_t_c_/_s_u_d_o_._c_o_n_f
file:

askpass The fully qualified path to a helper program used to read the
user's password when no terminal is available. This may be the
case when ssuuddoo is executed from a graphical (as opposed to
text-based) application. The program specified by _a_s_k_p_a_s_s
should display the argument passed to it as the prompt and
write the user's password to the standard output. The value of
_a_s_k_p_a_s_s may be overridden by the SUDO_ASKPASS environment
variable.

noexec The fully-qualified path to a shared library containing dummy
versions of the eexxeeccvv(), eexxeeccvvee() and ffeexxeeccvvee() library
functions that just return an error. This is used to implement
the _n_o_e_x_e_c functionality on systems that support LD_PRELOAD or
its equivalent. Defaults to _/_u_s_r_/_l_o_c_a_l_/_l_i_b_e_x_e_c_/_s_u_d_o___n_o_e_x_e_c_._s_o.

DDEEBBUUGG FFLLAAGGSS
ssuuddoo versions 1.8.4 and higher support a flexible debugging framework
that can help track down what ssuuddoo is doing internally if there is a
problem.

A Debug line consists of the Debug keyword, followed by the name of the
program to debug (ssuuddoo, vviissuuddoo, ssuuddoorreeppllaayy), the debug file name and a
comma-separated list of debug flags. The debug flag syntax used by ssuuddoo
and the _s_u_d_o_e_r_s plugin is _s_u_b_s_y_s_t_e_m@_p_r_i_o_r_i_t_y but the plugin is free to
use a different format so long as it does not include a comma (`,').

For instance:

Debug sudo /var/log/sudo_debug all@warn,plugin@info

would log all debugging statements at the _w_a_r_n level and higher in
addition to those at the _i_n_f_o level for the plugin subsystem.

Currently, only one Debug entry per program is supported. The ssuuddoo Debug
entry is shared by the ssuuddoo front end, ssuuddooeeddiitt and the plugins. A
future release may add support for per-plugin Debug lines and/or support
for multiple debugging files for a single program.

The priorities used by the ssuuddoo front end, in order of decreasing
severity, are: _c_r_i_t, _e_r_r, _w_a_r_n, _n_o_t_i_c_e, _d_i_a_g, _i_n_f_o, _t_r_a_c_e and _d_e_b_u_g.
Each priority, when specified, also includes all priorities higher than
it. For example, a priority of _n_o_t_i_c_e would include debug messages
logged at _n_o_t_i_c_e and higher.

The following subsystems are used by the ssuuddoo front-end:

_a_l_l matches every subsystem

_a_r_g_s command line argument processing

_c_o_n_v user conversation

_e_d_i_t sudoedit

_e_x_e_c command execution

_m_a_i_n ssuuddoo main function

_n_e_t_i_f network interface handling

_p_c_o_m_m communication with the plugin

_p_l_u_g_i_n plugin configuration

_p_t_y pseudo-tty related code

_s_e_l_i_n_u_x SELinux-specific handling

_u_t_i_l utility functions

_u_t_m_p utmp handling

EEXXIITT VVAALLUUEE	EEXXIITT VVAALLUUEE
Upon successful execution of a program, the exit status from _s_u_d_o will	Upon successful execution of a program, the exit status from _s_u_d_o will
simply be the exit status of the program that was executed.	simply be the exit status of the program that was executed.
Line 524 SSEECCUURRIITTYY NNOOTTEESS	Line 442 SSEECCUURRIITTYY NNOOTTEESS
disables core dumps by default while it is executing (they are re-enabled	disables core dumps by default while it is executing (they are re-enabled
for the command that is run). To aid in debugging ssuuddoo crashes, you may	for the command that is run). To aid in debugging ssuuddoo crashes, you may
wish to re-enable core dumps by setting ``disable_coredump'' to false in	wish to re-enable core dumps by setting ``disable_coredump'' to false in
the _/_e_t_c_/_s_u_d_o_._c_o_n_f file as follows:	the sudo.conf(4) file as follows:

Set disable_coredump false	Set disable_coredump false

Note that by default, most operating systems disable core dumps from	See the sudo.conf(4) manual for more information.
setuid programs, which includes ssuuddoo. To actually get a ssuuddoo core file
you may need to enable core dumps for setuid processes. On BSD and Linux
systems this is accomplished via the sysctl command, on Solaris the
coreadm command can be used.

EENNVVIIRROONNMMEENNTT	EENNVVIIRROONNMMEENNTT
ssuuddoo utilizes the following environment variables. The security policy	ssuuddoo utilizes the following environment variables. The security policy
Line 617 EEXXAAMMPPLLEESS	Line 531 EEXXAAMMPPLLEESS
$ sudo sh -c "cd /home ; du -s * \| sort -rn > USAGE"	$ sudo sh -c "cd /home ; du -s * \| sort -rn > USAGE"

SSEEEE AALLSSOO	SSEEEE AALLSSOO
grep(1), su(1), stat(2), login_cap(3), passwd(4), sudoers(4),	su(1), stat(2), login_cap(3), passwd(4), sudo.conf(4), sudoers(4),
sudo_plugin(1m), sudoreplay(1m), visudo(1m)	sudo_plugin(1m), sudoreplay(1m), visudo(1m)

HHIISSTTOORRYY	HHIISSTTOORRYY
Line 668 DDIISSCCLLAAIIMMEERR	Line 582 DDIISSCCLLAAIIMMEERR
file distributed with ssuuddoo or http://www.sudo.ws/sudo/license.html for	file distributed with ssuuddoo or http://www.sudo.ws/sudo/license.html for
complete details.	complete details.

Sudo 1.8.6 July 10, 2012 Sudo 1.8.6	Sudo 1.8.10 February 15, 2014 Sudo 1.8.10

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.1.1.3
changed lines
	Added in v.1.1.1.6