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703db8ccae
freebsd/lib
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Ian Lepore 703db8ccae Allow dhcp/bootp server-provided values to be overriden from environment 
variables in loader(8) and other libstand applications.

Sometimes a dhcp server provides incorrect information along with the IP
address. It would be useful to have a way to override this with
locally-supplied information, such as command line parameters passed from a
prior-stage bootloader. This change allows pre-existing env vars to take
precedence over values delivered by the dhcp or bootp server.

The bootp/dhcp code in libstand automatically creates environment variables
from the data provided by the server (dhcp.root-path, dhcp.domain-name,
etc). It also transcribes the values to some global variables such as
'rootpath' and 'hostname'.

This change does two things:

    When adding dhcp.* vars to the environment, don't replace existing
    vars/values.

    When setting the global vars rootpath and hostname, use the
    dhcp.root-path and dhcp.host-name env var values if they exist.

This allows the platform-specific part of loader(8) to obtain override
values in some platform-specific way and store them in the environment
before opening the network device. The set of values that can be overriden
is currently limited to just string options. The values that are delivered
as binary data are things that probably shouldn't be overridden (IP,
netmask, gateway, etc).

The original patch this evolved from was submitted by martymac@

PR:		202098
Differential Revision:	https://reviews.freebsd.org/D4559
2015-12-22 03:02:52 +00:00
..
atf META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
clang META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
csu Start support for the RISC-V 64-bit architecture developed by UC Berkeley. 2015-12-11 22:55:23 +00:00
lib80211 Minor spelling, mdoc and style cleanup. 2015-12-15 10:24:48 +00:00
libalias META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libarchive Don't override LIB*DIR variables from src.libnames.mk. 2015-12-01 22:20:04 +00:00
libauditd Don't override LIB*DIR variables from src.libnames.mk. 2015-12-01 22:03:40 +00:00
libbegemot META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libblocksruntime META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libbluetooth META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libbsdstat META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
libbsm Add au_notify.2 and MLINKs (added in OpenBSM 1.2 alpha 4). 2015-12-18 09:50:24 +00:00
libbsnmp META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libbz2 META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libc Use _map_v4v6_address(). 2015-12-21 17:54:23 +00:00
libc_nonshared
libc++ Replace ln -s calls with INSTALL_SYMLINK 2015-12-04 03:17:14 +00:00
libcalendar META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libcam META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libcapsicum META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libcasper META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
libclang_rt META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
libcom_err META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libcompat
libcompiler_rt Merge ^/head r288197 through r288456. 2015-10-01 19:02:45 +00:00
libcrypt Enable libcrypt tests. 2015-12-01 21:25:18 +00:00
libcuse META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libcxxrt META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libdevctl META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
libdevinfo META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libdevstat META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libdpv META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libdwarf META MODE: Fix 'make bootstrap-tools'. 2015-11-25 19:44:51 +00:00
libedit META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libefi
libelf Correct r291566 for defining SHLIBDIR. 2015-12-01 16:08:38 +00:00
libelftc
libevent META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
libexecinfo META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libexpat META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libfetch As a followup to r292330, standardize on size_t and add a few comments. 2015-12-16 09:20:45 +00:00
libfigpar META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libgeom META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libgpio META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libgssapi META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libiconv_modules META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libipsec META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libjail META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libkiconv META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libkvm Add support to libkvm for reading vmcores from other architectures. 2015-11-27 18:58:26 +00:00
libldns META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
liblzma META MODE: Fix 'make bootstrap-tools'. 2015-11-25 19:44:51 +00:00
libmagic META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libmd META MODE: Remove unneeded libmd.host dependency for xinstall.host. 2015-11-25 19:44:55 +00:00
libmemstat META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libmilter META MODE: Don't create .meta files when symlinking sources into the obj directory. 2015-11-25 19:44:43 +00:00
libmp META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libmt META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libnandfs META MODE: Connect MK_NAND directories. 2015-12-02 05:31:01 +00:00
libnetbsd Fix spelling error. 2015-11-05 01:54:38 +00:00
libnetgraph META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libngatm META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libnv META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libopenbsd Remove NO_WERROR, after fix from r292023. 2015-12-09 19:25:45 +00:00
libopie META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libpam DIRDEPS_BUILD: Update dependencies. 2015-12-07 23:53:01 +00:00
libpcap META MODE: Don't create .meta files when symlinking sources into the obj directory. 2015-11-25 19:44:43 +00:00
libpjdlog META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
libpmc Add support for Intel Skylake and Intel Broadwell PMC's. The Broadwell PMC's have been 2015-11-30 17:35:49 +00:00
libproc Fix LDADD/DPADD that should be LIBADD. 2015-12-04 03:17:47 +00:00
libprocstat META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libradius META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
librpcsec_gss META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
librpcsvc META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
librt Unbreak symbol versioning. I have no idea when it was broken, but it's been 2015-11-29 06:14:51 +00:00
librtld_db META MODE: Rework circular dependency guard for librtld_db/libproc. 2015-11-25 19:13:35 +00:00
libsbuf META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libsdp META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libsm META MODE: Don't create .meta files when symlinking sources into the obj directory. 2015-11-25 19:44:43 +00:00
libsmb META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libsmdb META MODE: Don't create .meta files when symlinking sources into the obj directory. 2015-11-25 19:44:43 +00:00
libsmutil META MODE: Don't create .meta files when symlinking sources into the obj directory. 2015-11-25 19:44:43 +00:00
libsqlite3 META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libstand Allow dhcp/bootp server-provided values to be overriden from environment 2015-12-22 03:02:52 +00:00
libstdbuf META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libstdthreads META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libsysdecode Start on a new library (libsysdecode) that provides routines for decoding 2015-12-15 00:05:07 +00:00
libtacplus
libtelnet
libthr libthr: Don't use both __sys_open() and __sys_openat(). 2015-12-20 16:33:56 +00:00
libthread_db META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libucl META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libufs META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libugidfw META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libulog META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libunbound META MODE: Update dependencies with 'the-lot' and add missing directories. 2015-12-01 05:23:19 +00:00
libusb META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libusbhid META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libutil META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libvgl META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libvmmapi META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libwrap Use LIBEXECDIR for /usr/libexec. 2015-11-26 01:14:40 +00:00
libxo META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
liby
libypclnt META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
libz META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
msun Integrate the remaining tools/regression/lib/msun testcases into the 2015-12-20 05:06:44 +00:00
ncurses META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host. 2015-11-25 19:10:28 +00:00
tests Refactor the test/ Makefiles after recent changes to bsd.test.mk (r289158) and 2015-10-12 08:16:03 +00:00
Makefile Make the building of libsmb and mount_smbfs unconditional, now that r292552 2015-12-21 17:41:08 +00:00
Makefile.inc