posix-groups
  1. posix-groups
    1. Usage
      1. group-information
      2. get-groups
      3. set-groups!
      4. initialize-groups
    2. Author
    3. Repository
    4. License
    5. Version History

This egg provides a way to obtain information about POSIX user groups from the system databases (typically /etc/passwd and /etc/groups), and to manipulate the current user's active groups.

This egg is only available on POSIX platforms, so it cannot be installed on Windows.

Usage

group-information

[procedure] (group-information GROUP)

If GROUP specifies a valid group-name or group-id, then this procedure returns a list of four values: the group-name, the encrypted group password, the group ID and a list of the names of all group members. If no group with the given name or ID exists, then #f is returned.

get-groups

[procedure] (get-groups)

Returns a list with the supplementary group IDs of the current user.

set-groups!

[procedure] (set-groups! GIDLIST)

Sets the supplementrary group IDs of the current user to the IDs given in the list GIDLIST.

Only the superuser may invoke this procedure.

initialize-groups

[procedure] (initialize-groups USERNAME BASEGID)

Sets the supplementrary group IDs of the current user to the IDs from the user with name USERNAME (a string), including BASEGID.

Only the superuser may invoke this procedure.

Author

The CHICKEN Team

Repository

This egg is hosted on the CHICKEN Subversion repository:

https://anonymous@code.call-cc.org/svn/chicken-eggs/release/5/posix-groups

If you want to check out the source code repository of this egg and you are not familiar with Subversion, see this page.

License

 
 Copyright (c) 2018, The CHICKEN Team
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
 conditions are met:
 
   Redistributions of source code must retain the above copyright notice, this list of conditions and the following
     disclaimer.
   Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
     disclaimer in the documentation and/or other materials provided with the distribution.
   Neither the name of the author nor the names of its contributors may be used to endorse or promote
     products derived from this software without specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
 OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.

Version History
0.2.1
Allow build on Haiku
0.2
Fix a few incorrect imports from earlier prerelease builds of CHICKEN 5.
0.1
Taken from the utils unit and released as an egg for CHICKEN 5.