Commit Graph

9 Commits

Author SHA1 Message Date
Konstantin Belousov
bc6f027a39 Reserve FreeBSD ELF feature control bit LA48 to control VA layout on amd64.
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D25273
2020-08-23 19:47:27 +00:00
Ed Maste
4ac4a7f80b elfctl: update earliest FreeBSD revision to 12.2
elfctl has been merged to stable/12, and so will appear in FreeBSD 12.2

Reported by:	Dewayne Geraghty
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
2020-05-05 21:50:52 +00:00
Ed Maste
b7a9e9d6b2 elfctl: remove memory leak
CID:		1420356
Reported by:	Coverity Scan
Sponsored by:	The FreeBSD Foundation
2020-03-11 13:51:01 +00:00
Ed Maste
d06e23f9d9 Reserve WXNEEDED ELF feature control flag
This will be used to tag binaries that require W+X mappings, in advance
of the ability to prevent W^X in mmap/mprotect.

There is still some discussion about the flag's name, but the ABI won't
change even if the name does (as kib pointed out in the review).

Reviewed by:	csjp, kib
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D23909
2020-03-04 18:21:30 +00:00
Ed Maste
76cd520d45 elfctl: check read return value
CID:		1420212, 1420213
Reported by:	Coverity Scan
Sponsored by:	The FreeBSD Foundation
2020-03-04 16:57:23 +00:00
Ed Maste
87a920c065 elfctl: style(9): use C99 uintX_t types
Sponsored by:	The FreeBSD Foundation
2020-03-04 16:53:49 +00:00
Ed Maste
ba6d70a065 elfctl: tiny style(9) cleanup, use bool where appropriate 2020-03-02 14:34:26 +00:00
Kyle Evans
fdafb99d81 elfctl: initialize features
GCC points out a couple levels down in convert_to_features that this may be
used uninitialized. Indeed, this is true- initialize it to NULL so that we
at least deref a null pointer.
2020-03-02 04:22:38 +00:00
Ed Maste
79bfb05b07 Move ELF feature note tool to usr.bin/elfctl
elfctl is a tool for modifying the NT_FREEBSD_FEATURE_CTL ELF note,
which contains a set of flags for enabling or disabling vulnerability
mitigations and other features.

Reviewed by:	csjp, kib
MFC after:	2 weeks
Relnotes:	Yes
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D23910
2020-03-02 02:36:41 +00:00