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Samanta Navarro 7b686d8bd6 newgrp/useradd: always set SIGCHLD to default 
The tools newgrp and useradd expect waitpid to behave as described in
its manual page. But the notes indicate that if SIGCHLD is ignored,
waitpid behaves differently.

A user could set SIGCHLD to ignore before starting newgrp through exec.
Children of newgrp would not become zombies and their PIDs could be
reassigned before newgrp could call kill with the child pid and SIGCONT.

The useradd tool is not installed setuid, but I have added the default
there as well (copied from vipw).

Signed-off-by: Samanta Navarro <ferivoz@riseup.net>
2023-04-26 08:27:45 -05:00
.builds CI: add libbsd and pkg-config dependencies 2022-11-28 09:07:41 -06:00
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README.md

shadow-utils

Introduction

The shadow-utils package includes the necessary programs for converting UNIX password files to the shadow password format, plus programs for managing user and group accounts. The pwconv command converts passwords to the shadow password format. The pwunconv command unconverts shadow passwords and generates a passwd file (a standard UNIX password file). The pwck command checks the integrity of password and shadow files. The lastlog command prints out the last login times for all users. The useradd, userdel, and usermod commands are used for managing user accounts. The groupadd, groupdel, and groupmod commands are used for managing group accounts.

Sites

Contacts

There are several ways to contact us:

Mailing archives

Contributions

Contributions are welcome. Follow the guidelines before posting any patches.

Authors and maintainers

Authors and maintainers are listed in AUTHORS.md.