libc: add posix_spawnattr_{get,set}procdescp_np

Reviewed by: asomers
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D54879

libc: add posix_spawnattr_{get,set}execfd_np(3)

If execfd is set, the fexecve(2) is used by posix_spawn() instead of the
provided path.

Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC a

libc: add posix_spawnattr_{get,set}execfd_np(3)

If execfd is set, the fexecve(2) is used by posix_spawn() instead of the
provided path.

Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D54862

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initgroups(3): Add a pre-FreeBSD-15-compatible version

After commit 9da2fe96ff2e ("kern: fix setgroups(2) and getgroups(2) to
match other platforms"), initgroups() does not set the effective GID
any

initgroups(3): Add a pre-FreeBSD-15-compatible version

After commit 9da2fe96ff2e ("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: 9da2fe96ff2e ("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

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Revert "libc: Remove readdir_r(3)"

This reverts commit d549de769055ae6116601e54e4c86dfb3e17f4c4.

libc: Remove readdir_r(3)

This function was never safe to use. We marked it deprecated in the
manual page in 2016, and it is marked obsolete in POSIX 2024. We
previously added a linker warning and

libc: Remove readdir_r(3)

This function was never safe to use. We marked it deprecated in the
manual page in 2016, and it is marked obsolete in POSIX 2024. We
previously added a linker warning and annotated the prototype; now that
stable/15 has been branched, we can remove it from main.

Relnotes: yes
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D52474

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libc,libthr: Remove __pthread_distribute_static_tls

This private API is no longer used by rtld-elf so can be removed.

Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D50921

libc: Finish removing fscandir{,_b}().

These only existed for a few days before being renamed, so there's no
reason to continue to carry compatibility shims for them.

Fixes: deeebfdecab5
Sponsored

libc: Finish removing fscandir{,_b}().

These only existed for a few days before being renamed, so there's no
reason to continue to carry compatibility shims for them.

Fixes: deeebfdecab5
Sponsored by: Klara, Inc.
Reviewed by: kevans
Differential Revision: https://reviews.freebsd.org/D50981

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libc: Add inotify support

inotify_init() and inotify_init1() are implemented using __specialfd(2).
inotify_add_watch() is implemented in terms of inotify_add_watch_at(2).

Reviewed by: kib
MFC after

libc: Add inotify support

inotify_init() and inotify_init1() are implemented using __specialfd(2).
inotify_add_watch() is implemented in terms of inotify_add_watch_at(2).

Reviewed by: kib
MFC after: 3 months
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D50315

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libc: Rename fscandir{,_b}() to fdscandir{,_b}().

This seems to fit the pattern better (e.g. fdopendir()).

I've added weak references to ease the transition, but since it's only
been a few days, we

libc: Rename fscandir{,_b}() to fdscandir{,_b}().

This seems to fit the pattern better (e.g. fdopendir()).

I've added weak references to ease the transition, but since it's only
been a few days, we can remove them (and the ObsoleteFiles entries for
the manual pages) before we branch stable/15.

Fixes: deeebfdecab5
Sponsored by: Klara, Inc.
Reviewed by: kevans
Differential Revision: https://reviews.freebsd.org/D50980

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libc: Add fscandir(), fscandir_b(), scandirat_b().

While here, clean up scandir() a bit and improve the documentation.

MFC after: never
Sponsored by: Klara, Inc.
Reviewed by: markj
Differential Rev

libc: Add fscandir(), fscandir_b(), scandirat_b().

While here, clean up scandir() a bit and improve the documentation.

MFC after: never
Sponsored by: Klara, Inc.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D50935

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Add the POSIX sig2str(3) & str2sig(3) calls

Signed-off-by: Ricardo Branco <rbranco@suse.de>
Reviewed by: imp, kib, des, jilles
Pull Request: https://github.com/freebsd/freebsd-src/pull/1696

glob: Add blocks support

This change introduces the `glob_b` function which takes a block instead
of a function pointer.

Relnotes: yes
Sponsored by: Klara, Inc.
Inspired by: https://github.com/a

glob: Add blocks support

This change introduces the `glob_b` function which takes a block instead
of a function pointer.

Relnotes: yes
Sponsored by: Klara, Inc.
Inspired by: https://github.com/apple-oss-distributions/Libc
Differential Revision: https://reviews.freebsd.org/D50485

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Provide user interface to retrieve reported extended errors

Reviewed by: brooks
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D50483

fts: Add blocks support.

This adds an `fts_open_b()` variant of `fts_open()` which takes a block
instead of a function pointer.

This was inspired by, and is intended to be compatible with, Apple's

fts: Add blocks support.

This adds an `fts_open_b()` variant of `fts_open()` which takes a block
instead of a function pointer.

This was inspired by, and is intended to be compatible with, Apple's
implementation; however, although our FTS and theirs share a common
ancestor, they have diverged significantly. That and the fact that
we still target compilers which don't support blocks means Apple's
implementation was not directly reusable.

This is the second use case for blocks in FreeBSD (the first being
`qsort_b()`, which we use here). This suggest we might want to add
a `COMPILER_FEATURE` for blocks to avoid hardcoding any further
`COMPILER_TYPE` checks.

MFC after: never
Relnotes: yes
Sponsored by: Klara, Inc.
Reviewed by: kevans, theraven, imp
Differential Revision: https://reviews.freebsd.org/D49877

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Add POSIX psiginfo(3) call

Signed-off-by: Ricardo Branco <rbranco@suse.de>
PR: 286133
MFC after: 1 week
Github PR: https://github.com/freebsd/freebsd-src/pull/1666

libc, libthr: coordinate stubs for pthread_{suspend,resume}_all_np

If libthr isn't linked into the process, then we don't have any pthreads
to worry about and our stubs can just return success -- th

libc, libthr: coordinate stubs for pthread_{suspend,resume}_all_np

If libthr isn't linked into the process, then we don't have any pthreads
to worry about and our stubs can just return success -- there are none
to suspend/resume.

Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D47350

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rtld: implement _dl_iterate_phdr_locked

Some sanitizers need to be able to use dl_iterate_phdr() after stopping
the rest of the process, but it's very hard to do so reliably as a
non-participant in

rtld: implement _dl_iterate_phdr_locked

Some sanitizers need to be able to use dl_iterate_phdr() after stopping
the rest of the process, but it's very hard to do so reliably as a
non-participant in the main logic of the program.

Introduce _dl_iterate_phdr_locked to bypass the locking that's normally
required for dl_iterate_phdr() and slap some scary warning on it. It
will remain undocumented and probably shouldn't be used for anything
else.

Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D47558

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rtld: add rtld_{get,set}_var

Reviewed by: brooks (previous version)
Discussed with: emaste
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D

rtld: add rtld_{get,set}_var

Reviewed by: brooks (previous version)
Discussed with: emaste
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D47351

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lib{c,sys}: correctly expose sched_getcpu

When moving the implementation, I failed to move the symbol entry.

Reviewed by: kib
Fixes: 84dd0c080ba5 libc: libc/gen/sched_getcpu_gen.c -> libsys/
Diffe

lib{c,sys}: correctly expose sched_getcpu

When moving the implementation, I failed to move the symbol entry.

Reviewed by: kib
Fixes: 84dd0c080ba5 libc: libc/gen/sched_getcpu_gen.c -> libsys/
Differential Revision: https://reviews.freebsd.org/D44112

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timezone: Move to the XSI/POSIX definition for timezone.

The old timezone(3) function has long since been obsolete and has a
fatally flawed interface. Retain this function for compatibility
purposes

timezone: Move to the XSI/POSIX definition for timezone.

The old timezone(3) function has long since been obsolete and has a
fatally flawed interface. Retain this function for compatibility
purposes, but shift to providing the offset from UTC in the timezone
variable, whether or not the timezone observes summer time in the
'daylight' variable. Document the tzname variable that's already been
set. Also make _tztab() static. It's not used in libc (or anywhere in
the tree) and it's not exported as a public dynamic symbol.

Sponsored by: Netflix
Reviewed by: brooks, kib
Differential Revision: https://reviews.freebsd.org/D44281

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lib{c,sys}: expose cap_sandboxed from libc/gen

It's a thin wrapper on cap_getmode() implemented in libc, not a system
call so the symbol should have been exposed by libc/gen/Symbol.map
alongside the

lib{c,sys}: expose cap_sandboxed from libc/gen

It's a thin wrapper on cap_getmode() implemented in libc, not a system
call so the symbol should have been exposed by libc/gen/Symbol.map
alongside the implementation.

Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D44110

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libsys: move errno to libsys

Before, the 'errno' itself was defined in libc and was referenced by
libsys, causing undesired dependency.

Reviewed by: brooks, imp
Sponsored by: The FreeBSD Foundation

libsys: move errno to libsys

Before, the 'errno' itself was defined in libc and was referenced by
libsys, causing undesired dependency.

Reviewed by: brooks, imp
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D43985

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libc: add aio_read2() and aio_write2() functions

as wrappers around lio_listio(LIO_READ/WRITE | LIO_FOFFSET, &iocb, 1);

Suggested and reviewed by: jhb
Discussed with: asomers
Sponsored by: The Free

libc: add aio_read2() and aio_write2() functions

as wrappers around lio_listio(LIO_READ/WRITE | LIO_FOFFSET, &iocb, 1);

Suggested and reviewed by: jhb
Discussed with: asomers
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differrential revision: https://reviews.freebsd.org/D43448

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libc: move getpagesize(s) to libsys

Reviewed by: kib, emaste, imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/908

libc: elf auxiliary vector handling to libsys

This is part of the interface to the kernel and some syscall wrappers
depend on it so move it there.

Reviewed by: kib, emaste, imp
Pull Request: https:

libc: elf auxiliary vector handling to libsys

This is part of the interface to the kernel and some syscall wrappers
depend on it so move it there.

Reviewed by: kib, emaste, imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/908

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