src/lib/libc/sys/POSIX2x_Fork.c, branch stable/15 FreeBSD source tree lib{c,sys}: return wrapped syscall APIs to libc 2024-03-13T18:36:02+00:00 Brooks Davis brooks@FreeBSD.org 2024-03-13T17:42:01+00:00 d7847a8d351436a4654bd2c746bc9c04401160ee These provide standard APIs, but are implemented using another system call (e.g., pipe implemented in terms of pipe2) or are interposed by the threading library to support cancelation. After discussion with kib (see D44111), I've concluded that it is better to keep most public interfaces in libc with as little as possible in libsys. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D44241 
These provide standard APIs, but are implemented using another system
call (e.g., pipe implemented in terms of pipe2) or are interposed by the
threading library to support cancelation.

After discussion with kib (see D44111), I've concluded that it is
better to keep most public interfaces in libc with as little
as possible in libsys.

Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D44241
libsys: relocate implementations and manpages 2024-02-05T20:34:55+00:00 Brooks Davis brooks@FreeBSD.org 2023-11-14T17:54:03+00:00 8269e7673cf033aba67dab8264fe719920c70f87 Remove core system call implementations and documentation to lib/libsys and lib/libsys/<arch> from lib/libc/sys and lib/libc/<arch>/<sys>. Update paths to allow libc to find them in their new home. Reviewed by: kib, emaste, imp Pull Request: https://github.com/freebsd/freebsd-src/pull/908 
Remove core system call implementations and documentation to lib/libsys
and lib/libsys/<arch> from lib/libc/sys and lib/libc/<arch>/<sys>.
Update paths to allow libc to find them in their new home.

Reviewed by:	kib, emaste, imp
Pull Request:	https://github.com/freebsd/freebsd-src/pull/908
libc: Purge unneeded cdefs.h 2023-11-01T22:44:30+00:00 Warner Losh imp@FreeBSD.org 2023-11-01T22:43:37+00:00 559a218c9b257775fb249b67945fe4a05b7a6b9f 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 
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
Remove $FreeBSD$: one-line .c pattern 2023-08-16T17:54:42+00:00 Warner Losh imp@FreeBSD.org 2023-08-16T17:54:42+00:00 1d386b48a555f61cb7325543adbbb5c3f3407a66 Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/ 
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
libc: drop "All rights reserved" from Foundation copyrights 2022-08-04T20:57:50+00:00 Ed Maste emaste@FreeBSD.org 2022-08-04T20:52:23+00:00 5b5fa75acff11d871d0c90045f8c1a58fed85365 This has already been done for most files that have the Foundation as the only listed copyright holder. Do it now for files that list multiple copyright holders, but have the Foundation copyright in its own section. Sponsored by: The FreeBSD Foundation 
This has already been done for most files that have the Foundation as
the only listed copyright holder.  Do it now for files that list
multiple copyright holders, but have the Foundation copyright in its own
section.

Sponsored by:	The FreeBSD Foundation
libc: Fix build on case-insensitive file systems 2021-09-10T00:19:38+00:00 Jessica Clarke jrtc27@FreeBSD.org 2021-09-10T00:19:38+00:00 877175a17a0a5da3f4f43ca9f38adb04042f4cf5 On case-insensitive file systems (most likely to be seen on macOS, where it is the default), _Fork.o for the new POSIX _Fork function conflicts with _fork.o for the PSEUDO file. This results in non-determinsitic behaviour in terms of which ends up being present; if _Fork.o wins then the build fails to link libc.so due to missing __sys_fork, and if _fork.o wins then libc silently fails to include the implementation of _Fork. A similar issue occurred in the past for C99's _Exit conflicting with exit(2) and was fixed in cb1cb6a2a83f, so this adds a fix based on that. As a longer-term solution it might be better to instead make the generated files use a different prefix that's less likely to conflict with other things (such as __sys_foo.o given they always contain that) but that's a rather more invasive change. Fixes: 49ad342cc10c ("Add _Fork()") Reviewed by: kib MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D31895 
On case-insensitive file systems (most likely to be seen on macOS, where
it is the default), _Fork.o for the new POSIX _Fork function conflicts
with _fork.o for the PSEUDO file. This results in non-determinsitic
behaviour in terms of which ends up being present; if _Fork.o wins then
the build fails to link libc.so due to missing __sys_fork, and if
_fork.o wins then libc silently fails to include the implementation of
_Fork. A similar issue occurred in the past for C99's _Exit conflicting
with exit(2) and was fixed in cb1cb6a2a83f, so this adds a fix based on
that.

As a longer-term solution it might be better to instead make the
generated files use a different prefix that's less likely to conflict
with other things (such as __sys_foo.o given they always contain that)
but that's a rather more invasive change.

Fixes:	49ad342cc10c ("Add _Fork()")
Reviewed by:	kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D31895