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scf 8db32e8a1e Added environ-replacement detection. For programs that "clean" (i.e., su)
or replace (i.e., zdump) the environment after a call to setenv(), putenv()
or unsetenv() has been made, a few changes were made.
  - getenv() will return the value from the new environ array.
  - setenv() was split into two functions:  __setenv() which is most of the
    previous setenv() without checks on the name and setenv() which
    contains the checks before calling __setenv().
  - setenv(), putenv() and unsetenv() will unset all previous values and
    call __setenv() on all entries in the new environ array which in turn
    adds them to the end of the envVars array.  Calling __setenv() instead
    of setenv() is done to avoid the temporary replacement of the '=' in a
    string with a NUL byte.  Some strings may be read-only data.

Added more regression checks for clearing the environment array.

Replaced gettimeofday() with getrusage() in timing regression check for
better accuracy.

Fixed an off-by-one bug in __remove_putenv() in the use of memmove().  This
went unnoticed due to the allocation of double the number of environ
entries when building envVars.

Fixed a few spelling mistakes in the comments.

Reviewed by:	ache
Approved by:	wes
Approved by:	re (kensmith)
2007-07-20 23:30:13 +00:00
bin Take care that the input to setenv() may actually be a pointer straight 2007-07-06 04:04:58 +00:00
cddl - Reduce number of atomic operations needed to be implemented in asm by 2007-06-08 12:35:47 +00:00
compat/opensolaris Use provider's ident to handle situations when disks are moved around 2007-05-06 01:39:39 +00:00
contrib This commit was generated by cvs2svn to compensate for changes in r171490, 2007-07-19 06:57:46 +00:00
crypto s/X11R6/local/g 2007-05-24 22:04:07 +00:00
etc Disconnect netatm from the build as it is not MPSAFE and relies on 2007-07-14 21:49:24 +00:00
games Remove duplicate. Was that a bug? :-) 2007-06-12 09:20:31 +00:00
gnu - Bump share library version which were missed in last bump 2007-06-18 18:47:54 +00:00
include Disconnect netatm from the build as it is not MPSAFE and relies on 2007-07-14 21:49:24 +00:00
kerberos5 Fix generator glue to only expose extern struct units %s_units[] is 2007-05-19 03:29:37 +00:00
lib Added environ-replacement detection. For programs that "clean" (i.e., su) 2007-07-20 23:30:13 +00:00
libexec Unbreak the dynamic linker by not creating a cache for rtld-elf 2007-07-15 22:52:15 +00:00
release New release notes: 2007-07-20 15:48:02 +00:00
rescue Disconnect netatm from the build as it is not MPSAFE and relies on 2007-07-14 21:49:24 +00:00
sbin Disconnect netatm from the build as it is not MPSAFE and relies on 2007-07-14 21:49:24 +00:00
secure - Bump share library version which were missed in last bump 2007-06-18 18:47:54 +00:00
share Document support for M_NOWAIT by the new implementation of contigmalloc(9) 2007-07-19 17:23:20 +00:00
sys Fix Symbios driver on amd64: Since amd64 has 64 bit pointers but the same 2007-07-20 23:02:01 +00:00
tools Added environ-replacement detection. For programs that "clean" (i.e., su) 2007-07-20 23:30:13 +00:00
usr.bin Fill in some casts that are needed (according to GCC 4.1) 2007-07-20 01:27:50 +00:00
usr.sbin The wpa_passphrase(8) manual page states that it first appeared in 2007-07-17 22:28:51 +00:00
COPYRIGHT Welcome to 2007 2006-12-31 16:35:29 +00:00
LOCKS Document commit constraints for RELENG_6_*. 2006-01-13 06:51:43 +00:00
MAINTAINERS Update the maintainer id for em driver. 2007-05-23 21:47:19 +00:00
Makefile Expose all of {check,delete}-old{,-dirs,-files,-libs}. 2007-05-16 08:46:35 +00:00
Makefile.inc1 Add sed(1) to cross tools. We do want newly built version during 2007-07-10 10:17:32 +00:00
ObsoleteFiles.inc MFp4: Remove files that are removed during gcc 4.2 upgrade, as 2007-07-17 17:28:59 +00:00
README Simply running ``make world'' will bomb unless you dig up the 2006-06-07 03:33:48 +00:00
UPDATING Fix typo. 2007-07-09 01:13:00 +00:00

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, the most
commonly used one being ``world'', which rebuilds and installs
everything in the FreeBSD system from the source tree except the
kernel, the kernel-modules and the contents of /etc.  The ``world''
target should only be used in cases where the source tree has not
changed from the currently running version.  See:
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, documentation
for which can be found at:
   http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html
And in the config(8) man page.
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 sample kernel configuration files reside in the sys/<arch>/conf
sub-directory (assuming that you've installed the kernel sources), the
file named GENERIC being the one used to build your initial installation
kernel.  The file NOTES contains entries and documentation for all possible
devices, not just those commonly used.  It is the successor of the ancient
LINT file, but in contrast to LINT, it is not buildable as a kernel but a
pure reference and documentation file.


Source Roadmap:
---------------
bin		System/user commands.

contrib		Packages contributed by 3rd parties.

crypto		Cryptography stuff (see crypto/README).

etc		Template files for /etc.

games		Amusements.

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.

sys		Kernel sources.

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:

  http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html