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version 1.1.1.4, 2013/07/22 10:46:11
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version 1.1.1.5, 2013/10/14 07:56:34
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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] [VVAARR=_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] file ... |
| [--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 |
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| |
|
| 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 |
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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 root, or ssuuddoo must be run from a shell that is |
| existing user class, the command must be run as root, or the | already root. If the command is being run as a login shell, |
| ssuuddoo command must be run from a shell that is already root. | additional _/_e_t_c_/_l_o_g_i_n_._c_o_n_f settings, such as the umask and |
| This option is only available on systems with BSD login | environment variables, will be applied if present. This |
| classes. | 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. |
|
Line 291 DDEESSCCRRIIPPTTIIOONN
|
Line 303 DDEESSCCRRIIPPTTIIOONN
|
| 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 VVAARR=_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 |
LLDD__LLIIBBRRAARRYY__PPAATTHH=_/_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 |
| environment 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 342 CCOOMMMMAANNDD EEXXEECCUUTTIIOONN
|
Line 356 CCOOMMMMAANNDD EEXXEECCUUTTIIOONN
|
| be in what POSIX terms an ``orphaned process group'' and it would not |
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 |
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 |
does not define a close function and no pty is required, ssuuddoo will |
| execute the command directly instead of calling fork(2) first. | 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 |
|
Line 561 DDIISSCCLLAAIIMMEERR
|
Line 579 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 1.8.7 March 13, 2013 Sudo 1.8.7 | Sudo 1.8.8 August 14, 2013 Sudo 1.8.8 |
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