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Alejandro Colomar 1d7d94ed7d Simplify is_my_tty() 
This commit will serve to document why we shouldn't worry about the
truncation in the call to strlcpy(3).  Since we have one more byte in
tmptty than in full_tty, truncation will produce a string that is at
least one byte longer than full_tty.  Such a string could never compare
equal, so we're actually handling the truncation in a clever way.  Maybe
too clever, but that's why I'm documenting it here.

Now, about the simplification itself:

Since we made sure that both full_tty and tmptty are null-terminated, we
can call strcmp(3) instead of strncmp(3).  We can also simplify the
return logic avoiding one branch.

Cc: Paul Eggert <eggert@cs.ucla.edu>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
Reviewed-by: Iker Pedrosa <ipedrosa@redhat.com>
2023-03-28 13:00:38 +02:00
.builds CI: add libbsd and pkg-config dependencies 2022-11-28 09:07:41 -06:00
.github CI: build project in containers 2023-03-26 12:45:34 -05:00
contrib Remove superfluous casts 2023-02-09 10:03:03 -06:00
doc Remove traces of utmpx 2022-12-22 10:31:43 +01:00
docs fix spelling and unify whitespace 2021-08-18 18:06:02 +00:00
etc fix PAM service files --without-selinux 2022-03-04 08:51:20 -06:00
lib Add STRLEN(): a constexpr strlen(3) for string literals 2023-03-28 13:00:38 +02:00
libmisc Simplify is_my_tty() 2023-03-28 13:00:38 +02:00
libsubid Remove superfluous casts 2023-02-09 10:03:03 -06:00
man newuidmap and newgidmap: support passing pid as fd 2023-02-24 12:35:49 -06:00
po Fix regression in some translation strings 2023-02-24 12:56:05 -06:00
share CI: script for local container build 2023-03-26 12:45:34 -05:00
src newuidmap and newgidmap: support passing pid as fd 2023-02-24 12:35:49 -06:00
tests run_some: fix shellcheck warning 2023-02-27 21:38:45 -06:00
.editorconfig Add .editorconfig 2023-03-02 16:33:06 -06:00
.gitignore Show libsubid api version in subid.h 2021-12-05 08:02:57 -06:00
.travis.yml subids: support nsswitch 2021-04-16 21:02:37 -05:00
acinclude.m4 configure: replace obsolete autoconf macros 2022-05-10 09:55:18 +02:00
AUTHORS.md AUTHORS: improve markdown output 2022-03-18 16:10:51 -05:00
autogen.sh undo accidental autogen.sh commit: enable-shared 2021-11-27 14:56:03 -06:00
ChangeLog fix typo 2023-01-12 12:10:57 +01:00
configure.ac Add stpecpy() 2023-02-16 11:29:33 +01:00
COPYING Update licensing info 2021-12-23 19:36:50 -06:00
Makefile.am fix spelling and unify whitespace 2021-08-18 18:06:02 +00:00
NEWS fix typo 2023-01-12 12:10:57 +01:00
README Add README as symlink to README.md 2021-12-19 14:09:08 -06:00
README.md README: update content and format 2021-11-22 15:31:54 +01:00
SECURITY.md SECURITY.md: add Iker Pedrosa 2023-03-20 10:54:45 -05:00
shadow.spec.in * shadow.spec.in: Fix the source (new FTP). 2008-08-31 17:30:45 +00:00
TODO fix spelling and unify whitespace 2021-08-18 18:06:02 +00:00

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

Authors and maintainers

Authors and maintainers are listed in AUTHORS.md.