linux: Make module standalone-buildable

Add opt_inet.h and opt_usb.h to make linux module buildable standalone.

Sponsored by: Netflix

sanitizers: Avoid building genassym.c and genoffset.c with sanitizers

Some, particularly KASAN, may insert redzones around global symbols,
resulting in incorrect offset definitions because genassym.

sanitizers: Avoid building genassym.c and genoffset.c with sanitizers

Some, particularly KASAN, may insert redzones around global symbols,
resulting in incorrect offset definitions because genassym.sh (ab)uses
symbol sizes to assign semantic meaning.

(Ideally I would be able to define this pattern in one place, but I
haven't found a way to define a GENSYM_CFLAGS that actually works for
all of the consumers (kern.post.mk, kmod.mk, sys/conf/files*).)

MFC after: 1 week
Sponsored by: Klara, Inc.
Sponsored by: Juniper Networks, Inc.

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sys: ${CFLAGS:N-flto} -> ${CFLAGS:N-flto*}

For the same reason as the original https://reviews.freebsd.org/D9659:
-flto=<N>, -flto=full, and -flto=thin also produce the GIMPLE/bitcode
which is not s

sys: ${CFLAGS:N-flto} -> ${CFLAGS:N-flto*}

For the same reason as the original https://reviews.freebsd.org/D9659:
-flto=<N>, -flto=full, and -flto=thin also produce the GIMPLE/bitcode
which is not supported by genassym, so filter those out as well.

Signed-off-by: Alex Xu (Hello71) <alex_y_xu@yahoo.ca>
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/898

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netlink: move NETLINK define to opt_global.h

Move the NETLINK define into opt_global.h so we can rely on it being
set correctly, without having to remember to include opt_netlink.h.
This ensures tha

netlink: move NETLINK define to opt_global.h

Move the NETLINK define into opt_global.h so we can rely on it being
set correctly, without having to remember to include opt_netlink.h.
This ensures that the NETLINK define is correctly set. If not we
may end up with unloadable modules, due to missing symbols (such as
nlmsg_get_group_writer).

PR: 274306
Reviewed by: imp, markj
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D42179

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sys: Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

linux(4): Implement xattr syscalls

Reviewed by:
Differential revision: https://reviews.freebsd.org/D35544
MFC after: 1 month

linux(4): Make linux_emul_path private

There is no need to refer to linux_emul_path from outside anymore.

MFC after: 2 month

linux(4): Fix opt_netlink.h inclusion

Add opt_netlink.h to the linux_common module, on i386, where we don't
uses linux_common module, move opt_netlink.h inclusion under
i386 condition.

MFC after:

linux(4): Fix opt_netlink.h inclusion

Add opt_netlink.h to the linux_common module, on i386, where we don't
uses linux_common module, move opt_netlink.h inclusion under
i386 condition.

MFC after: 2 weeks

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linux(4): Move inclusion of i386-specific files under common condition

netlink: fix linux module build w/ netlink.

Reported by: Marek Zarychta <zarychtam@plan-b.pwste.edu.pl>
MFC after: 2 weeks

linux(4): Trim unused opt_usb.h from modules Makefiles

MFC after: 2 weeks

linux(4): Get rid of the opt_compat.h include.

Since e013e369 COMPAT_LINUX, COMPAT_LINUX32 build options are removed,
so include of opt_compat.h is no more needed.

MFC after: 2 weeks

linux(4): Attach netlink on i386.

Discussed with: melifaro
MFC after: 3 days

linux(4): Add coredump support to i386.

MFC after: 1 week

linux64: improve linux_support.s make rules

Previously we relied on the .s.o rule in share/mk/bsd.suffixes.mk to
tell make that linux_support.o is built from linux_support.s, even
though we do not u

linux64: improve linux_support.s make rules

Previously we relied on the .s.o rule in share/mk/bsd.suffixes.mk to
tell make that linux_support.o is built from linux_support.s, even
though we do not use the .s.o rule to assemble it.

Reviewed by: sjg
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D35864

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sys: use .S for assembly language files that use the preprocessor

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/609
Differential Revision: https://reviews.freebsd.org/D3

sys: use .S for assembly language files that use the preprocessor

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/609
Differential Revision: https://reviews.freebsd.org/D35908

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modules: Add missing opt_*.h files for stand-alone compile

Standalone compile that we at least create these opt_*.h files.

Sponsored by: Netflix

linux, linux64: fix module load

The previous commit added references to to the syscallnames arrays, but
failed to add the relevant source files to the module build. Thus, the
modules failed to load

linux, linux64: fix module load

The previous commit added references to to the syscallnames arrays, but
failed to add the relevant source files to the module build. Thus, the
modules failed to load due to missing symbols.

Reported by: cy
Fixes: 1da65dcb1c57 ("linux: populate sv_syscallnames in each sysentvec")
Sponsored by: The FreeBSD Foundation

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linux, linux64: improve SRCS formatting

Sort the entries alphabetically, and list them with one entry per line.
This makes the diffs much cleaner when adding or removing a new entry,
as I will do in

linux, linux64: improve SRCS formatting

Sort the entries alphabetically, and list them with one entry per line.
This makes the diffs much cleaner when adding or removing a new entry,
as I will do in the next commit.

MFC after: 1 week
Sponsored by: The FreeBSD Foundation

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linux(4); Move vdso_selector_x86.c to the linux_common module

MFC after: 2 weeks

linux(4): Deduplicate translate_traps()

As translate_traps() is common for x86 Linuxulators,
move it under x86/linux.

MFC after: 2 weeks

linux(4): Implement vdso getcpu for x86.

This is modeled after f2395455 (by kib@).

MFC after: 2 weeks

linux(4): Add a simple rseq syscall implementation.

To avoid annoyng messages from glibc-2.35 test suite add the simple
implementation of rseq syscall which is do nothing for now.

I plan to impleme

linux(4): Add a simple rseq syscall implementation.

To avoid annoyng messages from glibc-2.35 test suite add the simple
implementation of rseq syscall which is do nothing for now.

I plan to implement it if and when the API stabilizes.

MFC after: 2 weeks

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Fix some modules to export more used symbols

and remove non-present symbols that are now reported by kmod_syms.awk.

Reviewed by: emaste
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differ

Fix some modules to export more used symbols

and remove non-present symbols that are now reported by kmod_syms.awk.

Reviewed by: emaste
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D32878

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linux: mv sys/i386/linux/linux_ptrace{,_machdep}.c

In preparation for machine-independent sys/compat/linux/linux_ptrace.c,
rename the i386-specific Linux ptrace(2) implementation. No functional
cha

linux: mv sys/i386/linux/linux_ptrace{,_machdep}.c

In preparation for machine-independent sys/compat/linux/linux_ptrace.c,
rename the i386-specific Linux ptrace(2) implementation. No functional
changes.

Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D32757

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