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Kirk McKusick 16c0c8eeec This is a little C-program that can be used to print out the list
of blocks used by a requested list of inodes.

For example, to list the blocks referenced by your kernel:

guest_12 % df /
Filesystem      1K-blocks     Used   Avail Capacity  Mounted on
/dev/gpt/rootfs  20307196 10707336 7975288    57%    /

guest_12 % ls -i /boot/kernel/kernel
160603 /boot/kernel/kernel

guest_12 % ./prtblknos /dev/gpt/rootfs 160603
160603:	lbn 0-7 blkno 3217584-3217647
	lbn 8-11 blkno 3217864-3217895 distance 216
First-level indirect, blkno 3217896-3217903 distance 0
	lbn 12-19 blkno 3217904-3217967 distance 8
	lbn 20-75 blkno 3251816-3252263 distance 33848
	lbn 76-83 blkno 3252368-3252431 distance 104
	lbn 84-91 blkno 3252464-3252527 distance 32
	lbn 92-852 blkno 3252896-3258983 distance 368

Each contiguous range of blocks is printed on a line.
The distance metric is the size of the gap from the end of the
previous set of blocks to the beginning of the next set of blocks.
Short distances are desirable.
2018-02-09 19:10:46 +00:00
bin Don't hardcode /usr/bin as the path for mktemp in build tools 2018-02-06 15:41:35 +00:00
cddl Fix "zpool add" crash when a replacing vdev has a spare child 2018-02-09 16:08:57 +00:00
contrib Pull in r324594 from upstream clang trunk (by Alexander Ivchenko): 2018-02-08 21:11:48 +00:00
crypto Add declaration of SSL_get_selected_srtp_profile() for OpenSSL. 2018-01-25 23:38:05 +00:00
etc Refactor cleanvar to remove shell expansion vulnerability 2018-02-06 21:35:41 +00:00
gnu Remove libreadline from the source tree, all consumers but gdb 2018-02-06 12:22:42 +00:00
include Avoid implicit gcc nonnull attribute in vwarnx(). 2018-01-28 19:37:30 +00:00
kerberos5 various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
lib su_data: correct macro expansion. 2018-02-08 14:53:34 +00:00
libexec Sprinkle static; avoid nested externs. 2018-02-04 19:05:13 +00:00
release Change installer default to not install ports tree 2018-01-30 16:34:56 +00:00
rescue Avoid referencing private lib names directly. 2017-11-10 07:53:02 +00:00
sbin Include files missed in 329051. 2018-02-08 23:14:24 +00:00
secure Remove c_rehash(1) to not confuse users. We do not install the Perl script. 2018-02-08 19:55:03 +00:00
share We don't actually need env here, so drop it. All shells allow setting 2018-02-09 15:50:32 +00:00
stand loader: fix endianness conversion 2018-02-09 10:20:16 +00:00
sys On bootup, the amd64 pmap initialization code creates page-table 2018-02-09 17:46:33 +00:00
targets Remove libreadline from the source tree, all consumers but gdb 2018-02-06 12:22:42 +00:00
tests Fix and enable SysV IPC tests. 2018-02-05 18:48:00 +00:00
tools This is a little C-program that can be used to print out the list 2018-02-09 19:10:46 +00:00
usr.bin Temporarily widen count for interrupt rate calculations on 32-bit archs 2018-02-08 05:18:30 +00:00
usr.sbin su_data: correct macro expansion. 2018-02-08 14:53:34 +00:00
.arcconfig callsign isn't required anymore 2016-09-29 06:19:45 +00:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.gitattributes .git*: add gitattributes and gitignore 2017-12-25 21:07:54 +00:00
.gitignore .git*: add gitattributes and gitignore 2017-12-25 21:07:54 +00:00
COPYRIGHT Happy New Year 2018 my friends! 2017-12-31 16:48:04 +00:00
LOCKS Explicitly require Security Officer's approval for kernel PRNG bits. 2013-09-17 14:19:05 +00:00
MAINTAINERS Move sys/boot to stand. Fix all references to new location 2017-11-14 23:02:19 +00:00
Makefile Add a note about why we have the conditional before including 2018-02-07 16:28:26 +00:00
Makefile.inc1 sort needs to be in ITOOLS since find -s was changed to find | sort. 2018-02-09 18:47:00 +00:00
Makefile.libcompat X_COMPILER_* may not be defined. 2018-01-24 18:08:37 +00:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc Remove c_rehash(1) to not confuse users. We do not install the Perl script. 2018-02-08 19:55:03 +00:00
README Document the sys/boot -> stand move in hier.7 and the top-level README. 2017-12-03 20:36:36 +00:00
README.md Document the sys/boot -> stand move in hier.7 and the top-level README. 2017-12-03 20:36:36 +00:00
UPDATING Upgrade our copies of clang, llvm, lld, lldb, compiler-rt and libc++ to 2018-01-14 00:08:34 +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 https://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 https://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.

crypto			Cryptography stuff (see crypto/README).

etc				Template files for /etc.

gnu				Various commands and libraries under the GNU Public License.  
				Please see gnu/COPYING* for more information.

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.

stand			Boot loader sources.

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.

For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see:

https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/current-stable.html