931930feb1
The manpage for `getgrouplist` says: > If the number of groups of which user is a member is less than or > equal to *ngroups, then the value *ngroups is returned. > > If the user is a member of more than *ngroups groups, then > getgrouplist() returns -1. In this case, the value returned in > *ngroups can be used to resize the buffer passed to a further > call getgrouplist(). In our original code, however, we allocated a list of size `10` and, if `getgrouplist` returned `-1` threw an exception. In practice, this caused the code to fail for any user belonging to more than 10 groups. While unusual for single-user systems, large companies commonly have a huge number of POSIX groups users belong to, causing this issue to crop up and make multi-user Nix unusable in such settings. The fix is relatively simple, when `getgrouplist` fails, it stores the real number of GIDs in `ngroups`, so we must resize our list and retry. Only then, if it errors once more, we can raise an exception. This should be backported to, at least, 2.9.x. |
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| config | ||
| contrib | ||
| doc/manual | ||
| m4 | ||
| maintainers | ||
| misc | ||
| mk | ||
| perl | ||
| scripts | ||
| src | ||
| tests | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .gitignore | ||
| .version | ||
| boehmgc-coroutine-sp-fallback.diff | ||
| bootstrap.sh | ||
| configure.ac | ||
| COPYING | ||
| default.nix | ||
| docker.nix | ||
| flake.lock | ||
| flake.nix | ||
| local.mk | ||
| Makefile | ||
| Makefile.config.in | ||
| precompiled-headers.h | ||
| README.md | ||
| shell.nix | ||
Nix
Nix is a powerful package manager for Linux and other Unix systems that makes package management reliable and reproducible. Please refer to the Nix manual for more details.
Installation
On Linux and macOS the easiest way to install Nix is to run the following shell command (as a user other than root):
$ curl -L https://nixos.org/nix/install | sh
Information on additional installation methods is available on the Nix download page.
Building And Developing
See our Hacking guide in our manual for instruction on how to build nix from source with nix-build or how to get a development environment.
Additional Resources
- Nix manual
- Nix jobsets on hydra.nixos.org
- NixOS Discourse
- Matrix - #nix:nixos.org
- IRC - #nixos on libera.chat
License
Nix is released under the LGPL v2.1.