Commit Graph

14 Commits

Author SHA1 Message Date
Konstantin Belousov
7c5a46a1bc Remove resolver_qual from DEFINE_IFUNC/DEFINE_UIFUNC macros.
In all practical situations, the resolver visibility is static.

Requested by:	markj
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Approved by:	so (emaste)
Differential revision:	https://reviews.freebsd.org/D20281
2019-05-16 22:20:54 +00:00
Dmitry Chagin
a7b87a2d95 Revert r313993.
AMD64_SET_**BASE expects a pointer to a pointer, we just passing in the pointer value itself.

Set PCB_FULL_IRET for doreti to restore %fs, %gs and its correspondig base.

PR:		225105
Reported by:	trasz@
MFC after:	1 month
2019-03-24 14:02:57 +00:00
Ed Maste
1b1f24b936 linuxulator: fix stack memory disclosure in linux_sigaltstack
admbugs:	765
Reported by:	Vlad Tsyrklevich <vlad@tsyrklevich.net>
Reviewed by:	andrew
MFC after:	1 day
Security:	Kernel memory disclosure
Sponsored by:   The FreeBSD Foundation
2019-01-21 16:25:40 +00:00
Konstantin Belousov
cb0eecdf92 Futex support functions in linux.ko and linux32.ko on amd64 should be
aware of SMAP.

Reported and tested by:	Johannes Lundberg <johalun0@gmail.com>, wulf
Sponsored by:	The FreeBSD Foundation
2018-08-07 18:29:10 +00:00
Ed Maste
c0aa0e2c27 Sort headers in MD Linuxulator files
Bring #includes closer to style(9) and reduce differences between the
(three) MD versions of linux_machdep.c and linux_sysvec.c.

Sponsored by:	Turing Robotic Industries Inc.
2018-03-23 17:16:36 +00:00
Edward Tomasz Napierala
5a49cd0099 Reimplement linux_arch_prctl() as a wrapper around sysarch(2).
This also adds support for LINUX_ARCH_SET_GS.

Reviewed by:	dchagin
MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D9372
2017-02-20 16:13:40 +00:00
Ed Maste
df4336ddfa Catch up to sys/capability.h rename to sys/capsicum.h in r263232
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
2016-09-19 18:44:43 +00:00
Dmitry Chagin
97d06da692 Fix a copy/paste bug introduced during X86_64 Linuxulator work.
FreeBSD support NX bit on X86_64 processors out of the box, for i386 emulation
use READ_IMPLIES_EXEC flag, introduced in r302515.

While here move common part of mmap() and mprotect() code to the files in compat/linux
to reduce code dupcliation between Linuxulator's.

Reported by:    Johannes Jost Meixner, Shawn Webb

MFC after:	1 week
XMFC with:	r302515, r302516
2016-07-10 08:22:04 +00:00
Pedro F. Giffuni
edafb5a327 sys/amd64: Small spelling fixes.
No functional change.
2016-05-03 22:13:04 +00:00
Dmitry Chagin
9dba79fb66 Remove obsolete comment.
MFC after:	3 days
2016-01-23 08:08:06 +00:00
Mateusz Guzik
21de5aea6c Fixup the build after r284215.
Submitted by:	Ivan Klymenko <fidaj ukr.net> [slighly modified]
2015-06-10 12:39:01 +00:00
Dmitry Chagin
4ab7403bbd Rework signal code to allow using it by other modules, like linprocfs:
1. Linux sigset always 64 bit on all platforms. In order to move Linux
sigset code to the linux_common module define it as 64 bit int. Move
Linux sigset manipulation routines to the MI path.

2. Move Linux signal number definitions to the MI path. In general, they
are the same on all platforms except for a few signals.

3. Map Linux RT signals to the FreeBSD RT signals and hide signal conversion
tables to avoid conversion errors.

4. Emulate Linux SIGPWR signal via FreeBSD SIGRTMIN signal which is outside
of allowed on Linux signal numbers.

PR:		197216
2015-05-24 17:47:20 +00:00
Dmitry Chagin
a7ac457613 According to Linux man sigaltstack(3) shall return EINVAL if the ss
argument is not a null pointer, and the ss_flags member pointed to by ss
contains flags other than SS_DISABLE. However, in fact, Linux also
allows SS_ONSTACK flag which is simply ignored.

For buggy apps (at least mono) ignore other than SS_DISABLE
flags as a Linux do.

While here move MI part of sigaltstack code to the appropriate place.

Reported by:	abi at abinet dot ru
2015-05-24 17:44:08 +00:00
Dmitry Chagin
b2f587918d Add preliminary support for x86-64 Linux binaries.
Differential Revision:	https://reviews.freebsd.org/D1076
2015-05-24 16:07:11 +00:00