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* system: Add /etc/subuid and /etc/subgid support.•••This commit adds a Guix System service to handle allocation of subuid and subgid requests. Users that don't care can just add themselves as a subid-range and don't need to specify anything but their user name. Users that care about specific ranges, such as possibly LXD, can specify a start and a count. * doc/guix.texi (Miscellaneous Services): Document it. * gnu/build/activation.scm (activate-subuids+subgids): New variable. * gnu/local.mk: Add gnu/tests/shadow.scm. * gnu/system/accounts.scm (sexp->subid-range): New variable. * gnu/system/shadow.scm (%root-subid): New variable; (subids-configuration): new record; (subid-range->gexp): new variable; (assert-valid-subids): new variable; (delete-duplicate-ranges): new variable; (subids-activation): new variable; (subids-extension): new record; (append-subid-ranges): new variable; (subids-extension-merge): new variable; (subids-service-type): new variable. * gnu/tests/shadow.scm (subids): New system test. Change-Id: I3755e1c75771220c74fe8ae5de1a7d90f2376635 Signed-off-by: Giacomo Leidi <goodoldpaul@autistici.org> Signed-off-by: Ludovic Courtès <ludo@gnu.org> Giacomo Leidi2024-12-181-0/+19
* activation: Create directory with specified perms in ‘mkdir-p/perms’.•••There is currently a window of time between when the desired directory is created and when its permissions are changed. During this time, its permissions are restricted only by the umask. Of course, in the "directory already exists" case, this doesn't matter, but if the directory has been specifically deleted ahead of time so that it is created afresh, this is an unnecessary window. We can avoid this by passing the caller-provided BITS to 'mkdirat' when attempting to create the last directory. * gnu/build/activation.scm (mkdir-p/perms): Create target directory with BITS permissions. Change-Id: I03d2c620872e86b6f591abe0f1c8317aa1245383 Signed-off-by: Ludovic Courtès <ludo@gnu.org> Reepca Russelstein2024-11-031-1/+3
* activation: Fix TOCTTOU in mkdir-p/perms.•••Fixes <https://issues.guix.gnu.org/47584>. I removed the 'Based upon mkdir-p from (guix build utils)' comment because it's quite a bit different now. * gnu/build/activation.scm (verify-not-symbolic): Delete. (mkdir-p/perms): Rewrite in terms of 'openat'. Signed-off-by: Ludovic Courtès <ludo@gnu.org> Change-Id: Id2f5bcbb903283afd45f6109190210d02eb383c7 Maxime Devos2024-09-061-33/+57
* privilege: Add POSIX capabilities(7) support.•••* gnu/system/privilege.scm (<privileged-program>): Add a field representing the program's POSIX capabilities. (privileged-program-capabilities): New public procedure. * doc/guix.texi (Privileged Programs): Document it. * gnu/build/activation.scm (activate-privileged-programs): Take a LIBCAP package argument providing setcap(8) to apply said capabilities. * gnu/services.scm (privileged-program->activation-gexp): Pass said package argument where supported. Include privileged-program-capabilities in the compatibility hack. Tobias Geerinckx-Rice2024-08-111-5/+12
* build: Rename activate-setuid-programs.•••* gnu/build/activation.scm (activate-setuid-programs): Rename this… (activate-privileged-programs): …to this. Operate on a list of <privileged-program> records. * gnu/services.scm (setuid-program->activation-gexp): Adjust caller. Tobias Geerinckx-Rice2024-08-111-12/+12
* services: setuid-program: Populate /run/privileged/bin.•••Create /run/setuid-programs compatibility symlinks so that we can migrate all users (both package and human) piecemeal at our leisure. Apart from being symlinks, this should be a user-invisible change. * gnu/build/activation.scm (%privileged-program-directory): New variable. [activate-setuid-programs]: Put privileged copies in %PRIVILEGED-PROGRAM-DIRECTORY, with compatibility symlinks to each in %SETUID-DIRECTORY. * gnu/services.scm (setuid-program-service-type): Update docstring. * doc/guix.texi (Setuid Programs): Update @file{} name accordingly. Tobias Geerinckx-Rice2024-08-111-18/+36
* services: activation: Ensure /run existence.•••* gnu/build/activation.scm (activation-script): Ensure /var/run existence. * gnu/build/install.scm (evaluate-populate-directive) [directives]: Remove directory /run. Change-Id: I19ca8e7605c0cff598ab89077a94e20390ba27b0 Signed-off-by: Ludovic Courtès <ludo@gnu.org> Nicolas Graves2024-02-191-0/+2
* Revert "gnu: system: Add home-directory-permissions field to <user-account>."•••This reverts commit e9a5eebc785cb843034b38c5c5a6dd10904bdf2a, which as far as I can tell breaks system roll-backs thusly: [...] In gnu/build/accounts.scm: 239:27 3 (_ #<<password-entry> name: "root" password: "x" uid: 0 gid: 0 real-name: "System >) In unknown file: 2 (string-join ("root" "x" "0" "0" "System administrator" "/root" #t) ":" #<undefined>) In ice-9/boot-9.scm: 1685:16 1 (raise-exception _ #:continuable? _) 1685:16 0 (raise-exception _ #:continuable? _) ice-9/boot-9.scm:1685:16: In procedure raise-exception: In procedure string-append: Wrong type (expecting string): #t Tobias Geerinckx-Rice2023-08-201-3/+3
* gnu: system: Add home-directory-permissions field to <user-account>.•••* gnu/system/accounts.scm (<user-account>)[home-directory-permissions]: New field. (user-account-home-directory-permissions): New accessor. * gnu/build/activation.scm (activate-users+groups): Use home directory permission bits from the user account object. * doc/guix.texi (User Accounts): Document new field. Signed-off-by: Josselin Poiret <dev@jpoiret.xyz> David Thompson2023-08-251-3/+3
* activation: Firmware activation handles missing support in kernel.•••* gnu/build/activation.scm (activate-firmware): Check if firmware loading is enabled before attempting to use it. Marius Bakke2022-12-171-3/+8
* initrd: Use non-hyphenated kernel command-line parameter names.•••This is to make it less surprising, given the common convention sets forth by the kernel Linux command-line parameters. * gnu/build/linux-boot.scm (boot-system): Rename '--load', '--repl', '--root' and '--system' to 'gnu.load', 'gnu.repl', 'root' and 'gnu.system', respectively. Adjust doc. (find-long-option): Adjust doc. * gnu/installer/parted.scm (installer-root-partition-path): Adjust accordingly. * gnu/system.scm (bootable-kernel-arguments): Add a VERSION argument and update doc. Use VERSION to conditionally return old style vs new style initrd arguments. (%boot-parameters-version): Increment to 1. (operating-system-boot-parameters): Adjust doc. (operating-system-boot-parameters-file): Likewise. * gnu/system/linux-initrd.scm (raw-initrd, base-initrd): Likewise. * doc/guix.texi: Adjust doc. * gnu/build/activation.scm (boot-time-system): Adjust accordingly. * gnu/build/hurd-boot.scm (boot-hurd-system): Likewise. * gnu/packages/commencement.scm (%final-inputs-riscv64): Adjust comment. Maxim Cournoyer2022-03-011-2/+2
* services: setuid: More configurable setuid support.•••New record <setuid-program> with fields for setting the specific user and group, as well as specifically selecting the setuid and setgid bits, for a program within the setuid-program-service. * gnu/services.scm (setuid-program-file-like-deprecated): New function. (setuid-program-service-type): Make use of setuid-program->activation-gexp. Adjust the extend property to handle <setuid-program>. * gnu/build/activation.scm (activate-setuid-programs): Update to expect a <setuid-record> list for each program entry. * gnu/system.scm: (operating-system-setuid-programs): Renamed to %operating-system-setuid-programs and replace it with new procedure. (operating-system-default-essential-services, hurd-default-essential-services): Replace operating-system-setuid-programs with %operating-system-setuid-programs. * gnu/system/setuid.scm: New file. * doc/guix.texi (Setuid Programs): Document <setuid-program>. Co-authored-by: Brice Waegeneire <brice@waegenei.re> Chris Lemmer-Webber2021-07-291-10/+28
* activation: Do not dereference symlinks during home directory creation.•••Fixes <https://bugs.gnu.org/47584>. * gnu/build/activation.scm (copy-account-skeletons): Do not chown the home directory; leave this to 'activate-user-home'. (activate-user-home): Only chown the home directory after the account skeletons have been copied. Co-authored-by: Ludovic Courtès <ludo@gnu.org>. Maxime Devos2021-04-031-4/+9
* services: Prevent following symlinks during activation.•••This addresses a potential security issue, where a compromised service could trick the activation code in changing the permissions, owner and group of arbitrary files. However, this patch is currently only a partial fix, due to a TOCTTOU (time-of-check to time-of-use) race, which can be fixed once guile has bindings to openat and friends. Fixes: <https://lists.gnu.org/archive/html/guix-devel/2021-01/msg00388.html> * gnu/build/activation.scm: new procedure 'mkdir-p/perms'. * gnu/services/authentication.scm (%nslcd-activation, nslcd-service-type): use new procedure. * gnu/services/cups.scm (%cups-activation): likewise. * gnu/services/dbus.scm (dbus-activation): likewise. * gnu/services/dns.scm (knot-activation): likewise. Signed-off-by: Ludovic Courtès <ludo@gnu.org> Maxime Devos2021-03-101-3/+50
* activation: Do not make setuid programs setgid-root [security].•••Fixes <https://bugs.gnu.org/46395>. Reported by Duncan Overbruck <mail@duncano.de>. * gnu/build/activation.scm (activate-setuid-programs): Change TARGET mode to not be setgid. Ludovic Courtès2021-02-091-2/+2
* activation: Fix function call for system activation•••* gnu/build/activation.scm (boot-time-system): Evaluate the linux-command-line thunk for linux systems to boot Signed-off-by: Ludovic Courtès <ludo@gnu.org> Royce Strange2020-06-091-1/+1
* system: Support activation service for the Hurd.•••* gnu/build/activation.scm (boot-time-system): Use "command-line" for the Hurd. * gnu/system.scm (hurd-default-essential-services): Add %boot-service and %activation-service. Jan (janneke) Nieuwenhuizen2020-06-081-1/+3
* activation: Check whether /proc/sys/kernel/modprobe exists.•••* gnu/build/activation.scm (activate-modprobe): Check whether /proc/sys/kernel/modprobe exists before writing to it. Co-authored-by: Ludovic Courtès <ludo@gnu.org> kanichos@yandex.ru2020-01-061-3/+7
* activation: Keep going when failing to create one of the setuid programs.•••Fixes <https://bugs.gnu.org/38800>. Reported by Jakub Kądziołka <kuba@kadziolka.net>. * gnu/build/activation.scm (activate-setuid-programs): Catch 'system-error' around 'make-setuid-program' calls. Ludovic Courtès2020-01-021-2/+14
* activation: Lock /etc/.pwd.lock before accessing databases.•••Suggested by Florian Pelz <pelzflorian@pelzflorian.de> in <http://bugs.gnu.org/35996>. * gnu/build/accounts.scm (%password-lock-file): New variable. * gnu/build/activation.scm (activate-users+groups): Wrap calls to 'user+group-databases', 'write-group', etc. into 'with-file-lock'. Ludovic Courtès2019-06-051-16/+21
* activation: Shared system home directories are now 555 and root-owned.•••Fixes <https://bugs.gnu.org/34788>. Reported by Jack Hill <jackhill@jackhill.us>. Regression introduced by the combination of 8bb76f3d44c1f5ffec8011819494db306a51d801 and 0ae735bcc8ff7fdc89d67b492bdee9091ee19e86: /var/empty would be 700 and owned by one of the system accounts (thus inaccessible to others), and /var/run/dbus would be 700 as well, thereby preventing D-Bus clients from connecting to the daemon. * gnu/build/activation.scm (duplicates): New procedure. (activate-users+groups)[system-accounts]: New variable. Use it. Make shared system account home directories #o555 and root-owned. * gnu/services/dbus.scm (dbus-activation): Make /var/run/dbus #o755. * gnu/tests/base.scm (run-basic-test): Test the ownership and permissions of /var/empty. Ludovic Courtès2019-03-081-5/+34
* activation: Build account databases with (gnu build accounts).•••* gnu/build/activation.scm (enumerate, current-users, current-groups) (add-group, add-user, modify-user, ensure-user): Remove. (activate-users+groups)[touch, activate-user]: Remove. [make-home-directory]: New procedure. Rewrite in terms of 'user+group-databases', 'write-group', etc. * gnu/build/install.scm (directives): Remove "/root". * gnu/system/shadow.scm (account-activation): Remove (setenv "PATH" ...) expression, which is now unneeded. Ludovic Courtès2019-03-071-188/+21
* activation: Operate on <user-account> and <user-group> records.•••* gnu/system/accounts.scm (sexp->user-group, sexp->user-account): New procedures. * gnu/system/shadow.scm (account-activation): Call them in the arguments to 'activate-users+groups'. (account-shepherd-service): Likewise. * gnu/build/activation.scm (activate-users+groups): Expect a list of <user-account> and a list of <user-group>. Replace uses of 'match' on tuples with calls to record accessors. (activate-user-home): Likewise. Ludovic Courtès2019-03-071-59/+63
* activation: Make home directories #o700 by default.•••Until now they'd be #o755, except for /root, which is treated specially in (gnu build install). * gnu/build/activation.scm (activate-user-home): Chmod HOME to #o700. Remove redundant 'unless system?'. Ludovic Courtès2019-03-041-3/+3
* activation: Aways pass '-d HOME' to 'useradd'.•••Fixes <https://bugs.gnu.org/33422>. Reported by fps. * gnu/build/activation.scm (add-user): Always pass "-d HOME" when HOME is true. Pass "--create-home" only when HOME, CREATE-HOME?, and SYSTEM? are true. (activate-users+groups): Pass #:create-home? create-home? to 'ensure-user'. * gnu/tests/base.scm (run-basic-test)["accounts"]: Test 'passwd:dir' as well. Ludovic Courtès2018-11-181-8/+9
* activation: Pass '-d HOME' to 'usermod'.•••Fixes a bug whereby changes to user home directories in the OS config would never be effective. Reported by Pierre Neidhardt <ambrevar@gmail.com>. * gnu/build/activation.scm (modify-user): Pass '-d HOME'. Ludovic Courtès2018-03-271-2/+3
* activation: Do not create setuid binaries in the store [security fix].•••Fixes <https://bugs.gnu.org/28751>. * gnu/build/activation.scm (activate-setuid-programs)[link-or-copy]: Remove. Use 'copy-file' instead. Ludovic Courtès2017-10-081-12/+1
* activation: Make sure /etc exists.•••Fixes <http://bugs.gnu.org/27146>. Reported by ng0 <ng0@pragmatique.xyz>. * gnu/build/activation.scm (activate-etc): Add call to 'mkdir-p'. Ludovic Courtès2017-08-031-0/+1
* activation: Change permissions on /root to #o700.•••Reported by Alex Griffin <a@ajgrf.com>. Fixes <http://bugs.gnu.org/27135>. * gnu/build/activation.scm (add-user): When UID is zero, add 'chmod' call. * gnu/tests/base.scm (run-basic-test)["permissions on /root"]: New test. Ludovic Courtès2017-05-301-2/+3
* services: user-homes: Do not create home directories marked as no-create.•••Fixes a bug whereby GuixSD would create the /nonexistent directory, from user 'nobody', even though it has 'create-home-directory?' set to #f. * gnu/build/activation.scm (activate-users+groups): Add comment for \#:create-home?. (activate-user-home)[ensure-user-home]: Skip when CREATE-HOME? is #f or SYSTEM? is #t. * gnu/tests/base.scm (run-basic-test)["no extra home directories"]: New tests. Ludovic Courtès2017-05-181-1/+8
* Merge branch 'master' into core-updatesLudovic Courtès2017-02-101-10/+39
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| * services: Add 'special-files-service-type'.•••* gnu/build/activation.scm (activate-/bin/sh): Remove. (activate-special-files): New procedure. * gnu/services.scm (activation-script): Remove call to 'activate-/bin/sh'. (special-files-service-type): New variable. (extra-special-file): New procedure. * gnu/services/base.scm (%base-services): Add SPECIAL-FILES-SERVICE-TYPE instance. * gnu/tests/base.scm (run-basic-test)[special-files]: New variables. ["special files"]: New test. Ludovic Courtès2017-02-081-5/+18
| * activation: Set the right owner for home directories.•••This fixes a regression introduced in ae763b5b0b7d5e7316a3d0efe991fe8ab2261031 whereby home directories and skeletons would be root-owned. * gnu/build/activation.scm (copy-account-skeletons): Make 'directory' a keyword parameter. Add #:uid and #:gid and honor them. [set-owner]: New procedure. (activate-user-home): Add call to 'getpw' and 'chown'. Pass UID and GID to 'copy-account-skeletons'. * gnu/tests/base.scm (run-basic-test)["skeletons in home directories"]: Test file ownership under HOME. Ludovic Courtès2017-02-041-5/+21
* | Merge branch 'master' into core-updatesLeo Famulari2017-02-021-2/+17
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| * system: Create home directories once 'file-systems' is up.•••Fixes <http://bugs.gnu.org/21108>. Reported by Andy Patterson <ajpatter@uwaterloo.ca> and Leo Famulari <leo@famulari.name>. * gnu/build/activation.scm (activate-users+groups)[activate-user]: Pass #:create-home? #t iff CREATE-HOME? and SYSTEM?. (activate-user-home): New procedure. * gnu/system/shadow.scm (account-shepherd-service): New procedure. (account-service-type)[extensions]: Add SHEPHERD-ROOT-SERVICE-TYPE extension. * gnu/tests/base.scm (run-basic-test)["home"] ["skeletons in home directories"]: New tests. * gnu/tests/install.scm (%separate-home-os, %separate-home-os-source) (%test-separate-home-os): New variables. Ludovic Courtès2017-02-011-2/+17
* | utils: Add helper method to make files writable.•••* gnu/build/activation.scm (make-file-writable): Move this to ... * guix/build/utils.scm (make-file-writable): ... here. Export it. * guix/build/gnu-build-system.scm (strip): Use it. Marius Bakke2017-01-261-5/+0
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* activation: Don't fail if /var/lib exists.•••This is a followup to commit 6526d43ea4fb0cd151a0d5e9a072c651c1c963d1. * gnu/build/activation.scm (activate-user+groups): Use mkdir-p to create /var/lib. Leo Famulari2016-09-061-1/+1
* activation: Allow home directories to be created under /var/lib.•••* gnu/build/activation.scm (activate-user+groups): Make sure /var/lib exists. David Craven2016-09-061-0/+3
* system: Add 'create-home-directory?' field to <user-account>.•••* gnu/system/shadow.scm (<user-account>)[create-home-directory?]: New field. (user-account->gexp): Serialize it. * gnu/build/activation.scm (activate-users+groups)[activate-user]: Update 'match-lambda' pattern accordingly. Pass #:create-home? to 'ensure-user'. (add-user, modify-user, ensure-user): Add #:create-home? parameter and honor it. * doc/guix.texi (User Accounts): Document it. Ludovic Courtès2016-08-281-5/+10
* activation: Copy account skeletons silently.•••* gnu/build/activation.scm (copy-account-skeletons): Pass #:log to 'copy-recursively'. Ludovic Courtès2016-03-241-1/+2
* system: Allow account skeletons to be directories.•••* gnu/system/shadow.scm (skeleton-directory): Use 'copy-recursively' instead of 'copy-file'. * gnu/build/activation.scm (copy-account-skeletons): Likewise. Ludovic Courtès2016-03-201-2/+3
* system: activate-ptrace-attach: Handle kernels without YAMA support.•••* gnu/build/activation.scm (activate-ptrace-attach): Check for the existence of /proc/sys/kernel/yama/ptrace_scope before trying to write to it. Mark H Weaver2015-05-091-3/+5
* activation: Make user copies of the skeletons writable.•••* gnu/build/activation.scm (make-file-writable, make-skeletons-writable): New procedures. (copy-account-skeletons): Call 'make-file-writable' after 'copy-file'. (add-user): Add call to 'make-skeletons-writable'. Ludovic Courtès2015-05-051-3/+28
* system: Allow users to PTRACE_ATTACH to their own processes.•••* gnu/build/activation.scm (activate-ptrace-attach): New procedure. * gnu/system.scm (operating-system-activation-script): Use it. Ludovic Courtès2015-04-121-0/+13
* activation: Remove undeclared user accounts and groups.•••Fixes <http://bugs.gnu.org/19795>. Reported by David Thompson <dthompson2@worcester.edu>. * gnu/build/activation.scm (enumerate, current-users, current-groups, delete-user, delete-group): New procedures. (activate-users+groups): Add calls to 'delete-user' and 'delete-group'. * doc/guix.texi (User Accounts): Add a paragraph about statelessness. Explain that passwords are preserved. Ludovic Courtès2015-04-081-3/+46
* system: Add /etc/ssl symlink; set needed variables in /etc/profile.•••* gnu/build/activation.scm (activate-etc): Create /etc/ssl symlink. * gnu/system.scm (etc-directory): Set SSL_CERT_DIR, SSL_CERT_FILE, and GIT_SSL_CAINFO in /etc/profile. Co-Authored-By: Ludovic Courtès <ludo@gnu.org> Mark H Weaver2015-03-031-0/+10
* activation: Copy the account skeletons when creating the 'root' account.•••* gnu/build/activation.scm (%skeleton-directory): New variable. (dot-or-dot-dot?, copy-account-skeletons): New procedure. (add-user): Use 'copy-account-skeletons'. (activate-etc): Use 'dot-or-dot-dot?'. Ludovic Courtès2014-12-131-3/+21
* activation: Don't create unneeded "/var/guix/gcroots/etc-directory".•••* gnu/build/activation.scm (activate-etc): Don't create "/var/guix/gcroots/etc-directory". Ludovic Courtès2014-12-061-5/+1
* activation: Set the firmware search path.•••* gnu/build/activation.scm (activate-firmware): New procedure. * gnu/system.scm (<operating-system>)[firmware]: New field. (directory-union): New procedure. (%base-firmware): New variable. (operating-system-activation-script): Use 'directory-union', and call 'activate-firmware'. * doc/guix.texi (operating-system Reference): Document 'firmware'. Ludovic Courtès2014-11-111-0/+10
* system: Allow Linux-libre to find our 'modprobe' command.•••Fixes <http://bugs.gnu.org/18525>. Reported by Mark H Weaver <mhw@netris.org>. * gnu/build/activation.scm (activate-modprobe): New procedure. * gnu/system.scm (modprobe-wrapper): New procedure. (operating-system-activation-script): Use both. Ludovic Courtès2014-11-021-0/+7