Commit Graph

6 Commits

Author SHA1 Message Date
Matt Macy
cbd92ce62e Eliminate the overhead of gratuitous repeated reinitialization of cap_rights
- Add macros to allow preinitialization of cap_rights_t.

- Convert most commonly used code paths to use preinitialized cap_rights_t.
  A 3.6% speedup in fstat was measured with this change.

Reported by:	mjg
Reviewed by:	oshogbo
Approved by:	sbruno
MFC after:	1 month
2018-05-09 18:47:24 +00:00
Hans Petter Selasky
07c757ec25 Allow LinuxKPI character devices to receive mmap() calls from the Linux
binary mode user-space emulation layer. This is a regression issue after
r328436, when LinuxKPI character devices started to use DTYPE_DEV in
the "f_type" field of the associated file structure(s).

MFC after:	3 days
Found by:	Johannes Lundberg <johalun0@gmail.com>
Sponsored by:	Mellanox Technologies
2018-02-21 10:13:17 +00:00
Edward Tomasz Napierala
c6d57d3073 There are some Linux binaries that expect the system to obey the "addr"
parameter to mmap(2), even if MAP_FIXED is not explicitly specified.
Android ART is one example.  Implement bug compatibility for this case
in linuxulator.

Reviewed by:	dchagin@
MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D9373
2017-02-19 17:17:06 +00:00
Konstantin Belousov
496ab0532d Rework r313352.
Rename kern_vm_* functions to kern_*.  Move the prototypes to
syscallsubr.h.  Also change Mach VM types to uintptr_t/size_t as
needed, to avoid headers pollution.

Requested by:	alc, jhb
Reviewed by:	alc
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D9535
2017-02-13 09:04:38 +00:00
Edward Tomasz Napierala
69cdfcef2e Add kern_vm_mmap2(), kern_vm_mprotect(), kern_vm_msync(), kern_vm_munlock(),
kern_vm_munmap(), and kern_vm_madvise(), and use them in various compats
instead of their sys_*() counterparts.

Reviewed by:	ed, dchagin, kib
MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D9378
2017-02-06 20:57:12 +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