Add prototype. Export from libdl.
Fixes: 1426fd6cff0603f0ee275b99f2ba35dc36f3d0c2
Reviewed by: kevans
Sponsored by: The FreeBSD Foundation
(cherry picked from commit 209fd89a2810419309944f10d11834321f0ebb25)
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
(cherry picked from commit 1426fd6cff0603f0ee275b99f2ba35dc36f3d0c2)
Our implementation currently diverges from POSIX 2024 in a couple of
ways, as now noted in the BUGS section.
Reviewed by: brooks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D47589
(cherry picked from commit 95b71a659a9bdc6e9071d80c7369a935c2bc16f4)
getentropy has a comment about a special case to support kernels between
SVN revisions r331280 and r337999. Add the corresponding Git hashes so
there's a usable reference after Subversion infrastructure disappears.
Sponsored by: The FreeBSD Foundation
(cherry picked from commit 4ef07eb0802a6353faf79d58719d8008decabae0)
These were reported by `mandoc -T lint ...` as warnings:
- unusual Xr order
- unusual Xr punctuation
Fixes made by script in https://github.com/Tarsnap/freebsd-doc-scripts
Signed-off-by: Graham Percival <gperciva@tarsnap.com>
Reviewed by: mhorne, Alexander Ziaee <concussious.bugzilla@runbox.com>
Sponsored by: Tarsnap Backup Inc.
Pull Request: https://github.com/freebsd/freebsd-src/pull/1464
(cherry picked from commit 6e1fc0118033f42b7c0d3623c8f67a89ebecabb2)
These were reported by `mandoc -T lint ...` as errors.
The rendered output (in ascii and html) is not affected by this commit.
Signed-off-by: Graham Percival <gperciva@tarsnap.com>
Reviewed by: mhorne
MFC after: 3 days
Sponsored by: Tarsnap Backup Inc.
Pull Request: https://github.com/freebsd/freebsd-src/pull/1448
(cherry picked from commit d21e322d563e0fd1f92c22205c2ced4bcd22dc23)
These were reported by `mandoc -T lint ...` as errors.
The rendered output (in ascii and html) is not affected by this commit.
Additional clarification: there was a non-breaking space in
lib/libcasper/services/cap_grp/cap_grp.3.
Signed-off-by: Graham Percival <gperciva@tarsnap.com>
Reviewed by: mhorne
MFC after: 3 days
Sponsored by: Tarsnap Backup Inc.
Pull Request: https://github.com/freebsd/freebsd-src/pull/1449
(cherry picked from commit c8b31033c3971b2b7349804ffda0cea5e4835b40)
Capsicum-sandboxed applications generally cannot use dlopen, as absolute
and cwd-relative paths cannot be accessed. Mention that fdlopen is
useful for sandboxed applications.
PR: 277169
Reviewed by: markj, oshogbo
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D45108
(cherry picked from commit d84fd89ecd404ffbf629381d2dde14fd79b39402)
Rather than calling calloc() to allocate space for a page size array to
pass to getpagesizes(), just follow the getpagesizes() implementation
and allocate MAXPAGESIZES elements on the stack. This avoids the need
for the allocation.
While this does mean that a new libc is required to take advantage of a
new huge page size, that was already true due to getpagesizes() using a
static buffer of MAXPAGESIZES elements.
Reviewed by: kevans, imp, emaste
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D42710
(cherry picked from commit c96772227b7dfcaf4eec4d07acb5c916643aca3a)
Due to memfd_create(3)'s construction of a path to pass to shm_open2(2),
it has a much larger than typical dependency footprint for a system
call wrapper (the list currently includes calloc, memset, sprintf, and
strlen). As such, split it off into its own file under libc/gen to
lighten libc/sys's dependency list.
Reviewed by: kevans, imp, emaste
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D42709
(cherry picked from commit c3207e2d2554c8e36f9cf5950f8cd52a19fedfd5)
fabs, __infinity, and __nan are universally implemented so declare them
in gen/Symbol.map.
We would also include __flt_rounds, but it's under FBSD_1.3 on arm so
until that's gone we're stuck with it. Likewise, everyone but i386
implements fp[gs]etmask.
Reviewed by: imp, kib, emaste
Differential Revision: https://reviews.freebsd.org/D42618
(cherry picked from commit c7045186819dbc64c3f005cb1138a1948868cf5a)
Declare makecontext() and __makecontext() symbols centrally as they are
always implemented.
Reviewed by: imp, kib
Differential Revision: https://reviews.freebsd.org/D42617
(cherry picked from commit 5d79b5445e12873b316a04de352d12a02bfe2d53)
These symbols are universally exposed and documented so declare them
centrally. Double- and triple-underscore versions exist on some
platforms, but leave those alone for now.
Reviewed by: imp, kib
Differential Revision: https://reviews.freebsd.org/D42616
(cherry picked from commit 1c656143be734de4b1e1bac27c0c48ef4d974510)
These were left over from $FreeBSD$ removal.
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D42612
(cherry picked from commit 1ca63a8219b88b752b064d19bd3428c61dbcf1f9)
These sys/cdefs.h are not needed. Purge them. They are mostly left-over
from the $FreeBSD$ removal. A few in libc are still required for macros
that cdefs.h defines. Keep those.
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D42385
(cherry picked from commit 559a218c9b257775fb249b67945fe4a05b7a6b9f)
The argument 's' of getpeerid(3) must be a connected UNIX-domain socket,
so document it.
PR: 248614
Differential Revision: https://reviews.freebsd.org/D42629
(cherry picked from commit fa9f74220146233b7224da7c94870540dc39ae68)
pthread_getname_np needs to be provided by libc in order to import
jemalloc 5.3.0.
A stub implementation for libc pthread_getname_np() is added for
_pthread_stubs.c, which always reports empty name for the main thread.
Internal _pthread_getname_np() is not exported, but provided for libc
own use.
Reviewed by: kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D41461
This likely documented where this file was copied, but the $FreeBSD$
tag was lost as soon as it was committed. Just remove it. Also remove
the one that looked like it was intended to track versions. That will
simplify the MFC.
Sponsored by: Netflix
Apparently there are applications that resolve dl_iterate_phdr from libc
and try to call the symbol. Our libc only provides stubs for dl* to
satisfy static linker or statically linked binaries, and is not prepared
to this situation.
Add a code to dso libc to find real dl_iterate_phdr and redirect the
call to it.
Reported by: yuri
PR: 272992
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
When libc switched to generation of logs as per RFC 5424,
that change broke application ability to insert specific process id
using ident[N] format, the feature existed for decades.
Some processes rely on it (including logger and syslogd).
Later the regression was fixed but the feature remained undocumented.
This change documents it.
MFC after: 1 week
to make __cxa_thread_call_dtors() operational for statically linked
binaries.
Noted by: andrew
Reviewed by: emaste, dim
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D40748
The SPDX folks have obsoleted the BSD-2-Clause-NetBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.
Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix
The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.
Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix
