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Olivier Certner 9dc1ac8691 initgroups(3): Add a pre-FreeBSD-15-compatible version 
After commit 9da2fe96ff ("kern: fix setgroups(2) and getgroups(2) to
match other platforms"), initgroups() does not set the effective GID
anymore and uses all passed groups as the supplementary group list.
This effectively breaks backwards compatibility with programs/libraries
compiled on a FreeBSD 14 or earlier system.

Restore compatibility by creating a new version of the 'initgroups'
symbol that designates the current implementation and providing
a pre-FreeBSD-15-compatible version under the symbol's previously
exported version.  The new version calls the new setgroups(2) system
call, while the compatible one calls the original one (called
freebsd14_setgroups()).

Update the manual page with some history and comparison with other
current open-source systems.  Add a "SECURITY CONSIDERATIONS" section
highlighting some security properties of this approach and the reasons
we adopt it.  While here, revamp the manual page, in particular to use
the exact POSIX terminology where possible.

Note for MFC to stable/14: Only the manual page update is to be MFCed,
and the text changed to reflect the old behavior and inform readers of
the new upcoming behavior in 15.

Reviewed by:    kib
Fixes:          9da2fe96ff ("kern: fix setgroups(2) and getgroups(2) to match other platforms")
MFC after:      5 days
Sponsored by:   The FreeBSD Foundation
Differential Revision:  https://reviews.freebsd.org/D52282
2025-09-17 14:16:06 +02:00
..
atf
atf, kyua: Implement require.kmods.
2025-05-31 14:27:30 +02:00
clang
Update main to 16
2025-09-04 16:06:47 -07:00
csu
csu/tests: Add tests to verify that errno == 0 upon program startup
2025-06-24 01:24:04 +00:00
geom
graid.8: fix typo
2025-04-28 10:01:30 -06:00
googletest
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
lib9p
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
lib80211
net80211: regdomain: ETSI: add missing 11a and 11na entries
2025-07-07 06:49:02 +00:00
libalias
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libarchive
libarchive: Stop using readdir_r()
2025-08-02 01:11:56 +02:00
libauditd
package: move OpenBSM auditing into its own package
2024-04-28 22:33:06 -06:00
libbe
packages: Use LIB_PACKAGE for zfs and ufs packages
2025-09-12 21:56:51 +01:00
libbearssl
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libbegemot
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libblacklist
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libblocksruntime
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libbluetooth
Remove $FreeBSD$: one-line nroff pattern
2023-08-16 11:55:15 -06:00
libbsddialog
Update Makefile.depend files
2024-10-14 10:26:17 -07:00
libbsdstat
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libbsm
package: move OpenBSM auditing into its own package
2024-04-28 22:33:06 -06:00
libbsnmp
libbsnmp: make binding of client UNIX socket optional and configurable
2025-07-25 13:10:17 -07:00
libbz2
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libc
initgroups(3): Add a pre-FreeBSD-15-compatible version
2025-09-17 14:16:06 +02:00
libc_nonshared
Retire MK_PROFILE infrastructure
2024-11-12 12:11:51 -05:00
libc++
Merge llvm-project release/19.x llvmorg-19.1.3-0-gab51eccf88f5
2024-11-08 17:45:31 +01:00
libc++experimental
Retire MK_PROFILE infrastructure
2024-11-12 12:11:51 -05:00
libcalendar
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libcam
libcam: Include nvme opcode and status code routines from nvme_util.c
2025-06-05 21:28:38 -04:00
libcapsicum
manuals: Fix "skipping end of block" .Ed errors
2024-10-03 14:49:23 -03:00
libcasper
cap_fileargs.3: Polish
2025-08-08 18:08:21 +02:00
libcbor
Update Makefile.depend files
2024-10-14 10:26:17 -07:00
libclang_rt
Partially revert 6527682ab7 for llvm-based projects
2025-04-24 16:36:40 +02:00
libcom_err
kerberos5: Fix the Heimdal pkgbase build
2025-09-04 14:53:02 +01:00
libcompat
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libcompiler_rt
libgcc_s: export integer and floating point __aeabi_ symbols
2025-05-04 13:48:32 +02:00
libcrypt
packages: Improve handling of -lib packages
2025-08-23 01:57:23 +01:00
libcuse
Remove $FreeBSD$: one-line nroff pattern
2023-08-16 11:55:15 -06:00
libcxxrt
src: Use gnu++17 as the default C++ standard
2025-04-11 09:53:50 -04:00
libder
lib: hook libder up to the build
2025-01-01 15:11:06 -06:00
libdevctl
manuals: Fix some "missing section argument"
2024-10-15 17:20:55 -03:00
libdevdctl
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libdevinfo
libdevinfo: Avoid false positives for the root0 sentinel value
2025-01-29 10:03:59 -05:00
libdevstat
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libdiff
diff: Nits in tests.
2024-05-20 16:27:50 +02:00
libdl
_dl_iterate_phdr_locked(): fix libc and libdl
2024-11-14 06:14:05 +02:00
libdpv
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libdwarf
Remove $FreeBSD$: one-line sh pattern
2023-08-16 11:55:03 -06:00
libedit
libedit: Reset WARNS
2025-04-30 15:05:00 +02:00
libefivar
efivar: Kill needless sys/cdefs.h
2025-05-25 07:49:32 -06:00
libelf
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libelftc
libelftc: Move to toolchain package
2025-08-23 01:57:23 +01:00
libevent1
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libexecinfo
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libexpat
lib/libexpat: update build config for 2.7.1
2025-04-07 11:36:45 +08:00
libfdt
libfdt: Make an internal FDT library available
2024-03-21 01:05:05 -04:00
libfetch
lib: Fix calls that naively set F_SETFD.
2025-07-17 17:00:32 +00:00
libfido2
Update Makefile.depend files
2024-10-14 10:26:17 -07:00
libfigpar
Refactor error handling in lseek operations
2024-09-21 05:25:15 -06:00
libgcc_eh
src: Use gnu++17 as the default C++ standard
2025-04-11 09:53:50 -04:00
libgcc_s
libgcc_s: export integer and floating point __aeabi_ symbols
2025-05-04 13:48:32 +02:00
libgeom
libgeom: Avoid fixed remappings of the devstat device
2024-08-19 16:02:59 +00:00
libgpio
libgpio: Add and document gpio interrupt utility functions
2025-09-03 21:01:05 +03:00
libgssapi
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libiconv_modules
Retire MK_PROFILE infrastructure
2024-11-12 12:11:51 -05:00
libifconfig
libifconfig: Add netlink based helper to bring the interface up/down
2025-08-29 17:39:39 +02:00
libipsec
libipsec: decode SADB_X_EXT_IF_HW_OFFL
2024-07-12 06:29:31 +03:00
libipt
Update Makefile.depend files
2024-10-14 10:26:17 -07:00
libiscsiutil
Remove redundant PACKAGE for INTERNALLIB libraries
2025-08-23 01:57:23 +01:00
libjail
jaildesc: remove desc from the sysctl parameter list
2025-09-13 15:30:14 -07:00
libkiconv
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libkldelf
libkldelf: add see_local parameter to elf_lookup_symbol
2024-10-25 16:20:16 +00:00
libkvm
kvm_proclist(): Restore outputting the effective GID
2025-09-09 17:56:49 +02:00
libldns
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
liblua
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
liblutok
lutok: Switch from std::auto_ptr<> to std::unique_ptr<>
2025-04-16 10:09:18 -04:00
liblzma
MFV: xz 5.8.1.
2025-05-04 00:06:22 -07:00
libmagic
libmagic: Unbreak for older FreeBSD releases.
2025-01-07 20:42:16 -08:00
libmd
lib/libmd: reenable AVX2 SHA1 kernel
2025-06-04 12:28:03 +02:00
libmemstat
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libmilter
sendmail: Move libmilter to its own package
2025-08-16 21:07:57 +01:00
libmixer
mixer(3): Do not skip devices with no volume control
2025-02-25 13:44:49 +02:00
libmp
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libmt
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libnetbsd
Remove redundant PACKAGE for INTERNALLIB libraries
2025-08-23 01:57:23 +01:00
libnetgraph
lib: Automated cleanup of cdefs and other formatting
2023-11-26 22:23:59 -07:00
libnetmap
Update Makefile.depend files
2024-10-14 10:26:17 -07:00
libnv
libnv: add tests to verify potential overflow issues
2024-09-04 13:43:16 +02:00
libnvmf
libnvmf: Fix a typo in a source code comment
2025-08-25 10:33:32 +02:00
libomp
Partially revert 6527682ab7 for llvm-based projects
2025-04-24 16:36:40 +02:00
libopenbsd
Remove redundant PACKAGE for INTERNALLIB libraries
2025-08-23 01:57:23 +01:00
libopencsd
lib: Move libopencsd to /usr/lib and make private
2025-07-30 11:11:38 +01:00
libpam
pam_ksu: Fix crash when no ticket is present
2025-08-09 07:16:45 +01:00
libpathconv
manuals: Fix "missing end of block" errors
2024-10-07 15:40:58 -03:00
libpcap
libpcap: Add changes missed in update to 1.10.5
2024-09-14 14:35:58 -03:00
libpe
Remove $FreeBSD$: one-line sh pattern
2023-08-16 11:55:03 -06:00
libpfctl
pf: Show pf fragment reassembly counters.
2025-09-15 11:32:34 +02:00
libpjdlog
lib: Automated cleanup of cdefs and other formatting
2023-11-26 22:23:59 -07:00
libpmc
libpmc: add more alderlake models
2025-02-25 11:35:26 -04:00
libpmcstat
Remove redundant PACKAGE for INTERNALLIB libraries
2025-08-23 01:57:23 +01:00
libproc
Fix proc_signame() to use sig2str()
2025-06-11 17:16:22 -06:00
libprocstat
libprocstat: procstat_getgroups_kvm(): Output again the effective GID
2025-09-17 14:16:00 +02:00
libradius
radlib: fix a memory leak in is_valid_request
2024-06-04 19:40:55 -07:00
libregex
libregex: fix our mapping for \w
2025-08-08 13:27:26 -05:00
librpcsec_gss
gssapi,krb5: Replace libgssapi with the MIT version
2025-08-07 10:17:00 -07:00
librpcsvc
Revert "Remove Secure RPC DES authentication"
2025-08-15 17:59:18 +01:00
librss
manuals: Misc syntax fixes
2024-10-08 16:13:39 -03:00
librt
Update Makefile.depend files
2024-10-14 10:26:17 -07:00
librtld_db
Remove "All Rights Reserved" from FreeBSD Foundation copyrights
2024-07-30 12:16:36 -04:00
libsamplerate
libsamplerate: Define as PRIVATELIB
2025-09-15 16:09:38 +03:00
libsbuf
lib/libsbuf/tests: reformat with clang-format
2024-12-01 20:39:52 -08:00
libsdp
Remove $FreeBSD$: one-line nroff pattern
2023-08-16 11:55:15 -06:00
libsecureboot
Add DEBUG_PRINTF to stand.h
2025-07-17 16:36:17 -07:00
libsm
Remove redundant PACKAGE for INTERNALLIB libraries
2025-08-23 01:57:23 +01:00
libsmb
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libsmdb
Remove redundant PACKAGE for INTERNALLIB libraries
2025-08-23 01:57:23 +01:00
libsmutil
Remove redundant PACKAGE for INTERNALLIB libraries
2025-08-23 01:57:23 +01:00
libsqlite3
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libssp
Update Makefile.depend files
2024-10-14 10:26:17 -07:00
libssp_nonshared
Retire MK_PROFILE infrastructure
2024-11-12 12:11:51 -05:00
libstats
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libstdbuf
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libstdthreads
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libsys
jail.2: Mention EPERM is returned on open directories
2025-09-15 11:29:44 +02:00
libsysdecode
sysdecode_syscallnames.3: s/names/name/
2025-08-25 20:49:05 -04:00
libtacplus
lib: Automated cleanup of cdefs and other formatting
2023-11-26 22:23:59 -07:00
libtelnet
Remove redundant PACKAGE for INTERNALLIB libraries
2025-08-23 01:57:23 +01:00
libthr
libthr: GC unused _sigsuspend()
2025-08-06 12:31:24 +01:00
libthread_db
Remove "All Rights Reserved" from FreeBSD Foundation copyrights
2024-07-30 12:16:36 -04:00
libucl
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libufs
packages: Use LIB_PACKAGE for zfs and ufs packages
2025-09-12 21:56:51 +01:00
libugidfw
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libulog
Retire MK_PROFILE infrastructure
2024-11-12 12:11:51 -05:00
libunbound
unbound: Update to 1.23.1
2025-09-07 22:05:17 +02:00
libusb
libusb: implement libusb_get_platform_descriptor
2025-08-06 10:05:40 -04:00
libusbhid
libusbhid: add missing include guards
2024-06-06 10:09:05 -04:00
libutil
getmntpoint: Don't compare st_rdev for non-devices
2025-08-17 19:29:27 +02:00
libutil++
libutil++: Rename manpage source files to avoid colons
2025-08-26 16:44:38 -04:00
libveriexec
manuals: Fix "unusual .Xr" warnings with a script
2024-10-15 17:18:14 -03:00
libvgl
lib/libvgl/main.c: remove an extra semicolon
2024-02-02 18:35:01 -07:00
libvmmapi
libvmmapi: Add support for setting up and configuring guest NUMA domains
2025-07-27 18:31:48 +02:00
libwrap
Remove $FreeBSD$: one-line sh pattern
2023-08-16 11:55:03 -06:00
libxo
Update Makefile.depend files
2024-10-14 10:26:17 -07:00
liby
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libyaml
libyaml: import libyaml vendor version 0.2.5
2025-06-26 09:02:31 +02:00
libypclnt
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
libz
Update Makefile.depend files
2024-10-14 10:26:17 -07:00
libzstd
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
msun
lib/msun: cpow{,f,l}(CMLX(0.0, 0.0)) should return 1.0
2025-09-12 05:36:27 +03:00
ncurses
ncurses: Provide reproducible paths
2025-07-14 14:45:57 +00:00
nss_tacplus
nss_tacplus: Provide dummy setpwent(), getpwent_r(), endpwent().
2023-08-31 07:49:57 +00:00
ofed
src: Use gnu++17 as the default C++ standard
2025-04-11 09:53:50 -04:00
tests
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
Makefile
Remove MK_GSSAPI
2025-08-20 19:42:20 +01:00
Makefile.inc
Remove $FreeBSD$: one-line sh pattern
2023-08-16 11:55:03 -06:00