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'\" t
.\" Title: suauth
.\" Author: Marek Micha\(/lkiewicz
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\" Date: 2022-11-08
.\" Manual: File Formats and Configuration Files
.\" Source: shadow-utils 4.13
.\" Language: Chinese Simplified
.\"
.TH "SUAUTH" "5" "2022-11-08" "shadow\-utils 4\&.13" "File Formats and Configuration"
.\" -----------------------------------------------------------------
.\" * 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 "名称"
suauth \- 详细的 su 控制文件
.SH "大纲"
.HP \w'\fB/etc/suauth\fR\ 'u
\fB/etc/suauth\fR
.SH "描述"
.PP
The file
/etc/suauth
is referenced whenever the su command is called\&. It can change the behaviour of the su command, based upon:
.sp
.if n \{\
.RS 4
.\}
.nf
1) the user su is targeting
.fi
.if n \{\
.RE
.\}
.PP
2) 执行 su 命令的用户 (或者他可能属于的组)
.PP
文件格式为：以 # 开头的行视为注视，并被忽略；
.sp
.if n \{\
.RS 4
.\}
.nf
to\-id:from\-id:ACTION
.fi
.if n \{\
.RE
.\}
.PP
Where to\-id is either the word
\fIALL\fR, a list of usernames delimited by "," or the words
\fIALL EXCEPT\fR
followed by a list of usernames delimited by ","\&.
.PP
from\-id is formatted the same as to\-id except the extra word
\fIGROUP\fR
is recognized\&.
\fIALL EXCEPT GROUP\fR
is perfectly valid too\&. Following
\fIGROUP\fR
appears one or more group names, delimited by ","\&. It is not sufficient to have primary group id of the relevant group, an entry in
\fB/etc/group\fR(5)
is necessary\&.
.PP
动作只可以使用如下当前支持的选项。
.PP
\fIDENY\fR
.RS 4
su 的尝试在询问密码之前就被拒绝。
.RE
.PP
\fINOPASS\fR
.RS 4
su 尝试自动成功，而且不询问密码。
.RE
.PP
\fIOWNPASS\fR
.RS 4
为了成功执行 su，用户必须提供自己的密码。将会提示他们这样。
.RE
.PP
注意，有三个用冒号分割的字段。冒号旁边不能有空格。也请注意，这个文件会被一行一行地依次检查，会使用第一个可用的规则，而不会继续检查文件。这可以让系统管理员使系统尽量符合其期望。
.SH "示例"
.sp
.if n \{\
.RS 4
.\}
.nf
# sample /etc/suauth file
#
# A couple of privileged usernames may
# su to root with their own password\&.
#
root:chris,birddog:OWNPASS
#
# Anyone else may not su to root unless in
# group wheel\&. This is how BSD does things\&.
#
root:ALL EXCEPT GROUP wheel:DENY
#
# Perhaps terry and birddog are accounts
# owned by the same person\&.
# Access can be arranged between them
# with no password\&.
#
terry:birddog:NOPASS
birddog:terry:NOPASS
#
.fi
.if n \{\
.RE
.\}
.SH "文件"
.PP
/etc/suauth
.RS 4
.RE
.SH "缺陷"
.PP
可能会有很多潜在问题。文件解析器尤其不能容忍语法错误，不能有无意义的空白符(除了行首和行尾)，并且使用特定的标记分割不同的事情。
.SH "DIAGNOSTICS"
.PP
An error parsing the file is reported using
\fBsyslogd\fR(8)
as level ERR on facility AUTH\&.
.SH "参见"
.PP
\fBsu\fR(1)\&.
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