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Base Operating System and Extensions Technical Reference, Volume 1

getconfattr Subroutine

Purpose

Accesses the user information in the user database.

Library

Security Library (libc.a)

Syntax


#include <usersec.h>
#include <userconf.h>
int getconfattr (sys, Attribute, Value, Type)
char *sys;
char *Attribute;
void *Value;
int Type;

Description

The getconfattr subroutine reads a specified attribute from the user database.

Parameters

sys System attribute. The following possible attributes are defined in the userconf.h file.
  • SC_SYS_LOGIN
  • SC_SYS_USER
  • SC_SYS_ADMUSER
  • SC_SYS_AUDIT    SEC_LIST
  • SC_SYS_AUSERS   SEC_LIST
  • SC_SYS_ASYS    SEC_LIST
  • SC_SYS_ABIN    SEC_LIST
  • SC_SYS_ASTREAM    SEC_LIST
Attribute Specifies which attribute is read. The following possible attributes are defined in the usersec.h file:
S_ID
User ID. The attribute type is SEC_INT.
S_PGRP
Principle group name. The attribute type is SEC_CHAR.
S_GROUPS
Groups to which the user belongs. The attribute type is SEC_LIST.
S_ADMGROUPS
Groups for which the user is an administrator. The attribute type is SEC_LIST.
S_ADMIN
Administrative status of a user. The attribute type is SEC_BOOL.
S_AUDITCLASSES
Audit classes to which the user belongs. The attribute type is SEC_LIST.
S_AUTHSYSTEM
Defines the user's authentication method. The attribute type is SEC_CHAR.
S_HOME
Home directory. The attribute type is SEC_CHAR.
S_SHELL
Initial program run by a user. The attribute type is SEC_CHAR.
S_GECOS
Personal information for a user. The attribute type is SEC_CHAR.
S_USRENV
User-state environment variables. The attribute type is SEC_LIST.
S_SYSENV
Protected-state environment variables. The attribute type is SEC_LIST.
S_LOGINCHK
Specifies whether the user account can be used for local logins. The attribute type is SEC_BOOL.
S_HISTEXPIRE
Defines the period of time (in weeks) that a user cannot reuse a password. The attribute type is SEC_INT.
S_HISTSIZE
Specifies the number of previous passwords that the user cannot reuse. The attribute type is SEC_INT.
S_MAXREPEAT
Defines the maximum number of times a user can repeat a character in a new password. The attribute type is SEC_INT.
S_MINAGE
Defines the minimum age in weeks that the user's password must exist before the user can change it. The attribute type is SEC_INT.
S_PWDCHECKS
Defines the password restriction methods for this account. The attribute type is SEC_LIST.
S_MINALPHA
Defines the minimum number of alphabetic characters required in a new user's password. The attribute type is SEC_INT.
S_MINDIFF
Defines the minimum number of characters required in a new password that were not in the old password. The attribute type is SEC_INT.
S_MINLEN
Defines the minimum length of a user's password. The attribute type is SEC_INT.
S_MINOTHER
Defines the minimum number of non-alphabetic characters required in a new user's password. The attribute type is SEC_INT.
S_DICTIONLIST
Defines the password dictionaries for this account. The attribute type is SEC_LIST.
S_SUCHK
Specifies whether the user account can be accessed with the su command. Type SEC_BOOL.
S_REGISTRY
Defines the user's authentication registry. The attribute type is SEC_CHAR.
S_RLOGINCHK
Specifies whether the user account can be used for remote logins using the telnet or rlogin commands. The attribute type is SEC_BOOL.
S_DAEMONCHK
Specifies whether the user account can be used for daemon execution of programs and subsystems using the cron daemon or src. The attribute type is SEC_BOOL.
S_TPATH
Defines how the account may be used on the trusted path. The attribute type is SEC_CHAR. This attribute must be one of the following values:
nosak
The secure attention key is not enabled for this account.
notsh
The trusted shell cannot be accessed from this account.
always
This account may only run trusted programs.
on
Normal trusted-path processing applies.
S_TTYS
List of ttys that can or cannot be used to access this account. The attribute type is SEC_LIST.
S_SUGROUPS
Groups that can or cannot access this account. The attribute type is SEC_LIST.
S_EXPIRATION
Expiration date for this account, in seconds since the epoch. The attribute type is SEC_CHAR.
S_AUTH1
Primary authentication methods for this account. The attribute type is SEC_LIST.
S_AUTH2
Secondary authentication methods for this account. The attribute type is SEC_LIST.
S_UFSIZE
Process file size soft limit. The attribute type is SEC_INT.
S_UCPU
Process CPU time soft limit. The attribute type is SEC_INT.
S_UDATA
Process data segment size soft limit. The attribute type is SEC_INT.
S_USTACK
Process stack segment size soft limit. Type: SEC_INT.
S_URSS
Process real memory size soft limit. Type: SEC_INT.
S_UCORE
Process core file size soft limit. The attribute type is SEC_INT.
S_PWD
Specifies the value of the passwd field in the /etc/passwd file. The attribute type is SEC_CHAR.
S_UMASK
File creation mask for a user. The attribute type is SEC_INT.
S_LOCKED
Specifies whether the user's account can be logged into. The attribute type is SEC_BOOL.
S_UFSIZE_HARD
Process file size hard limit. The attribute type is SEC_INT.
S_UCPU_HARD
Process CPU time hard limit. The attribute type is SEC_INT.
S_UDATA_HARD
Process data segment size hard limit. The attribute type is SEC_INT.
S_USTACK_HARD
Process stack segment size hard limit. Type: SEC_INT.
S_URSS_HARD
Process real memory size hard limit. Type: SEC_INT.
S_UCORE_HARD
Process core file size hard limit. The attribute type is SEC_INT.
Note: These values are string constants that should be used by applications both for convenience and to permit optimization in latter implementations.
Type Specifies the type of attribute expected. Valid types are defined in the usersec.h file and include:
SEC_INT
The format of the attribute is an integer.

For the getuserattr subroutine, the user should supply a pointer to a defined integer variable. For the putuserattr subroutine, the user should supply an integer.

SEC_CHAR
The format of the attribute is a null-terminated character string.
SEC_LIST
The format of the attribute is a series of concatenated strings, each null-terminated. The last string in the series is terminated by two successive null characters.
SEC_BOOL
The format of the attribute from getuserattr is an integer with the value of either 0 (false) or 1 (true). The format of the attribute for putuserattr is a null-terminated string containing one of the following strings: true, false, yes, no, always, or never.
SEC_COMMIT
For the putuserattr subroutine, this value specified by itself indicates that changes to the named user are to be committed to permanent storage. The Attribute and Value parameters are ignored. If no user is specified, the changes to all modified users are committed to permanent storage.
SEC_DELETE
The corresponding attribute is deleted from the database.
SEC_NEW
Updates all the user database files with the new user name when using the putuserattr subroutine.

Security

Files Accessed:
Mode File
rw /etc/security/user
rw /etc/security/limits
rw /etc/security/login.cfg

Return Values

If successful, returns 0

If successful, returns -1

Error Codes

ENOENT The specified User parameter does not exist or the attribute is not defined for this user.

Implementation Specifics

These subroutines are part of Base Operating System (BOS) Runtime.

Files

/etc/passwd Contains user IDs.

Related Information

The getuserattr subroutine.

List of Security and Auditing Subroutines, Subroutines Overview in AIX Version 4.3 General Programming Concepts: Writing and Debugging Programs.

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