Alejandro ColomarandSerge Hallyn
225530b7e1
This wrapper calculates the destination buffer's size, to avoid errors in the size calculation. A curious fact: this macro did exist in Version 7 Unix (with a slightly different name). I found it by chance, investigating the origins of strncpy(3) and strncat(3) in V7, after Branden suggested me to do so, related to recent discussions about string_copying(7). alx@debian:~/src/unix/unix/Research-V7$ grepc SCPYN . ./usr/src/cmd/login.c:#define SCPYN(a, b) strncpy(a, b, sizeof(a)) Our implementation is slightly better, because using nitems() we're protected against passing a pointer instead of an array, and it's also conceptually more appropriate: for wide characters, it would be #define WCSNCPY(dst, src) wcsncpy(dst, src, NITEMS(dst)) Cc: "G. Branden Robinson" <branden@debian.org> Signed-off-by: Alejandro Colomar <alx@kernel.org>
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
Code
The main development branch is at https://github.com/shadow-maint/shadow.git
See STABLE.md for a list of supported stable branches.
Contacts
There are several ways to contact us:
- the general discussion mailing list
- the #shadow IRC channel on libera.chat:
- irc://irc.libera.chat/shadow
Mailing archives
- the general discussion mailing list archive
- the commit mailing list archive, only used for historical purposes
Contributions
Contributions are welcome. Follow the guidelines before posting any patches.
Authors and maintainers
Authors and maintainers are listed in AUTHORS.md.