kib c77fb55571 Accept linkers representation for ELF segments with zero on-disk length.
For such segments, GNU bfd linker writes knowingly incorrect value
into the the file offset field of the program header entry, with the
motivation that file should not be mapped for creation of this segment
at all.

Relax checks for the ELF structure validity when on-disk segment
length is zero, and explicitely set mapping length to zero for such
segments to avoid validating rounding arithmetic.

PR:	217610
Reported by:	Robert Clausecker <fuz@fuz.su>
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2017-03-12 13:51:13 +00:00
2017-03-06 01:37:05 +00:00
2017-03-11 06:27:06 +00:00
2017-03-11 00:10:40 +00:00
2017-03-06 01:37:05 +00:00
2017-03-12 12:38:16 +00:00
2017-03-12 04:28:45 +00:00
2017-03-12 03:43:28 +00:00
2016-09-29 06:19:45 +00:00
2015-04-20 20:33:22 +00:00
2016-12-31 12:41:42 +00:00
2017-01-28 02:22:15 +00:00
2017-03-12 03:53:41 +00:00

FreeBSD Source:

This is the top level of the FreeBSD source directory. This file was last revised on: FreeBSD

For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information).

The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7) and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html for more information, including setting make(1) variables.

The buildkernel and installkernel targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags.

Building a kernel is a somewhat more involved process. See build(7), config(8), and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information.

Note: If you want to build and install the kernel with the buildkernel and installkernel targets, you might need to build world before. More information is available in the handbook.

The kernel configuration files reside in the sys/<arch>/conf sub-directory. GENERIC is the default configuration used in release builds. NOTES contains entries and documentation for all possible devices, not just those commonly used.

Source Roadmap:

bin				System/user commands.

cddl			Various commands and libraries under the Common Development  
				and Distribution License.

contrib			Packages contributed by 3rd parties.

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etc				Template files for /etc.

gnu				Various commands and libraries under the GNU Public License.  
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include			System include files.

kerberos5		Kerberos5 (Heimdal) package.

lib				System libraries.

libexec			System daemons.

release			Release building Makefile & associated tools.

rescue			Build system for statically linked /rescue utilities.

sbin			System commands.

secure			Cryptographic libraries and commands.

share			Shared resources.

sys				Kernel sources.

tests			Regression tests which can be run by Kyua.  See tests/README
				for additional information.

tools			Utilities for regression testing and miscellaneous tasks.

usr.bin			User commands.

usr.sbin		System administration commands.

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freebsd kernel with SKQ
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