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freebsd-dev/lib
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Conrad Meyer f8e8a06d23 random(4) FenestrasX: Push root seed version to arc4random(3) 
Push the root seed version to userspace through the VDSO page, if
the RANDOM_FENESTRASX algorithm is enabled.  Otherwise, there is no
functional change.  The mechanism can be disabled with
debug.fxrng_vdso_enable=0.

arc4random(3) obtains a pointer to the root seed version published by
the kernel in the shared page at allocation time.  Like arc4random(9),
it maintains its own per-process copy of the seed version corresponding
to the root seed version at the time it last rekeyed.  On read requests,
the process seed version is compared with the version published in the
shared page; if they do not match, arc4random(3) reseeds from the
kernel before providing generated output.

This change does not implement the FenestrasX concept of PCPU userspace
generators seeded from a per-process base generator.  That change is
left for future discussion/work.

Reviewed by:	kib (previous version)
Approved by:	csprng (me -- only touching FXRNG here)
Differential Revision:	https://reviews.freebsd.org/D22839
2020-10-10 21:52:00 +00:00
..
atf Update Makefile.depend files 2019-12-11 17:37:53 +00:00
clang Merge llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp 2020-10-01 19:06:07 +00:00
csu [PowerPC64LE] Use a shared LIBC_ARCH for powerpc64le. 2020-09-23 00:21:51 +00:00
geom gpart(8): Recognize apple-zfs and solaris-reserved partition ids 2020-08-17 17:07:05 +00:00
googletest Do a sweep and remove most WARNS=6 settings 2020-10-01 01:10:51 +00:00
kyua Install expected kyua docs. 2020-03-26 17:34:17 +00:00
lib9p Add virtio-9p (aka VirtFS) filesystem sharing to bhyve. 2020-10-03 19:05:13 +00:00
lib80211 80211: non-functional changes 2020-10-07 21:56:58 +00:00
libalias libalias: retire cuseeme support 2020-05-16 02:29:10 +00:00
libarchive build: provide a default WARNS for all in-tree builds 2020-09-18 17:17:46 +00:00
libauditd libauditd: make it a PRIVATELIB 2020-04-19 02:20:39 +00:00
libbe loader: zfs should support bootonce an nextboot 2020-09-21 09:01:10 +00:00
libbearssl Revert that! 2020-07-19 23:56:19 +00:00
libbegemot Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libblacklist Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libblocksruntime Move all sources from the llvm project into contrib/llvm-project. 2019-12-20 19:53:05 +00:00
libbluetooth Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libbsdstat Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libbsm libbsm: fix some MLINKS 2020-04-19 02:18:40 +00:00
libbsnmp Add test to for FreeBSD-SA-19:20.bsnmp 2020-08-13 22:42:24 +00:00
libbz2 Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libc random(4) FenestrasX: Push root seed version to arc4random(3) 2020-10-10 21:52:00 +00:00
libc_nonshared
libc++ Only set WARNS if not defined 2020-09-11 13:28:37 +00:00
libc++experimental Move all sources from the llvm project into contrib/llvm-project. 2019-12-20 19:53:05 +00:00
libcalendar Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libcam Do a sweep and remove most WARNS=6 settings 2020-10-01 01:10:51 +00:00
libcapsicum Add missing FreeBSD functions to -legacy when building on macOS/Linux 2020-08-25 13:23:31 +00:00
libcasper build: provide a default WARNS for all in-tree builds 2020-09-18 17:17:46 +00:00
libclang_rt Merge ^/head r364051 through r364081. 2020-08-10 16:58:05 +00:00
libcom_err Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libcompat ftime appeared in 7th Edition Unix to replace gtime. 2018-10-28 02:58:15 +00:00
libcompiler_rt Follow-up r364753 by only using arm's stdatomic.c implementation, as it 2020-09-10 16:47:12 +00:00
libcrypt Do a sweep and remove most WARNS=6 settings 2020-10-01 01:10:51 +00:00
libcuse Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libcxxrt Only set WARNS if not defined 2020-09-11 13:28:37 +00:00
libdevctl Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libdevdctl libdevdctl: Force full match of "timestamp" field name 2020-06-23 16:29:59 +00:00
libdevinfo devinfo: add man page links 2020-08-04 21:09:36 +00:00
libdevstat Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libdl
libdpv Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libdwarf Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libedit Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libefivar libefivar: define MDE_CPU_RISCV64 2020-07-06 17:47:29 +00:00
libelf Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libelftc Update ELF Tool Chain to upstream r3769 2019-12-05 13:20:15 +00:00
libevent1 rename in-tree libevent v1 to libevent1 2020-05-28 22:05:50 +00:00
libexecinfo Move all sources from the llvm project into contrib/llvm-project. 2019-12-20 19:53:05 +00:00
libexpat Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libfetch Don't explicitly specify c99 or gnu99 as the default is now gnu99. 2020-08-17 05:57:02 +00:00
libfigpar Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libgcc_eh After r364423, which ensures the callbacks that dl_iterate_phdr(3) 2020-08-25 20:07:11 +00:00
libgcc_s Remove the SYMVER build option. 2020-04-30 22:08:40 +00:00
libgeom Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libgpio Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libgssapi Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
libiconv_modules Do a sweep and remove most WARNS=6 settings 2020-10-01 01:10:51 +00:00
libifconfig libifconfig now depends on libm due to usage of log10(). 2020-09-02 22:10:08 +00:00
libipsec Refer to AES-CBC as "aes-cbc" rather than "rijndael-cbc" for IPsec. 2020-06-04 22:58:37 +00:00
libipt Update Intel Processor Trace decoder library. 2019-10-10 12:46:34 +00:00
libjail libjail: Handle an error from reallocarray() when trimming the buffer. 2020-01-07 21:44:27 +00:00
libkiconv pkgbase: Put a lot of binaries and lib in FreeBSD-runtime 2019-09-05 14:13:08 +00:00
libkvm libkvm: catch up with pre-subtracated per-cpu addresses 2020-10-06 02:57:37 +00:00
libldns Update Makefile.depend files 2019-12-11 17:37:53 +00:00
liblua Fix -Wundef warnings when building liblua 2020-08-25 13:30:34 +00:00
liblutok Add liblutok a lightweight C++ API for lua. 2020-03-23 18:26:23 +00:00
liblzma liblzma: Make liblzma use libmd implementation of SHA256. 2020-06-20 21:32:07 +00:00
libmagic Fix installation of magic file. 2020-06-17 15:57:59 +00:00
libmd Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
libmemstat memstat_kvm_uma: fix reading of uma_zone_domain structures 2020-08-28 19:50:40 +00:00
libmilter Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libmp Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libmt Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
libnetbsd Make timespecadd(3) and friends public 2018-07-30 15:46:40 +00:00
libnetgraph Fix SYNPOSIS section to point to the proper include directive. 2020-05-15 12:04:39 +00:00
libnetmap libnetmap: fix cast from uint64_t to void* 2020-09-22 20:20:43 +00:00
libngatm Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libnv Fix libnv build post rename 2020-06-27 02:17:04 +00:00
libomp Update build glue for libomp. 2020-01-27 18:04:28 +00:00
libopenbsd Only set WARNS if not defined 2020-09-11 13:28:37 +00:00
libopencsd Update opencsd to 0.14.2 2020-06-17 10:42:20 +00:00
libopie Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libpam Don't explicitly specify c99 or gnu99 as the default is now gnu99. 2020-08-17 05:57:02 +00:00
libpathconv Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
libpcap MFV r353141 (by phillip): 2019-12-21 21:01:03 +00:00
libpe
libpjdlog pkgbase: Create a FreeBSD-utilities package and make it the default one 2019-09-05 14:15:47 +00:00
libpmc Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
libpmcstat pmcstat: implement showing offsets into symbols in top mode 2020-08-05 19:05:49 +00:00
libproc Do a sweep and remove most WARNS=6 settings 2020-10-01 01:10:51 +00:00
libprocstat Merge OpenZFS support in to HEAD. 2020-08-25 02:21:27 +00:00
libradius Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
libregex libregex: disable some of the unimplemented test cases for now 2020-08-04 02:16:43 +00:00
librpcsec_gss Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
librpcsvc Update Makefile.depend files 2019-12-11 17:37:53 +00:00
librss Update Makefile.depend files 2019-12-11 17:37:53 +00:00
librt pkgbase: Create a FreeBSD-utilities package and make it the default one 2019-09-05 14:15:47 +00:00
librtld_db librtld_db: Handle anonymous mappings below the first file mapping. 2020-06-05 18:44:14 +00:00
libsbuf Do a sweep and remove most WARNS=6 settings 2020-10-01 01:10:51 +00:00
libsdp Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libsecureboot veloader: insist on verifying .4th .lua etc 2020-08-21 00:27:06 +00:00
libsm Merge sendmail 8.16.1 to HEAD: See contrib/sendmail/RELEASE_NOTES for details 2020-07-15 18:28:54 +00:00
libsmb Move nsmb.conf to lib/libsmb/ 2018-09-20 09:31:27 +00:00
libsmdb Merge sendmail 8.16.1 to HEAD: See contrib/sendmail/RELEASE_NOTES for details 2020-07-15 18:28:54 +00:00
libsmutil
libsqlite3 [PowerPC64LE] Pass our byte order to the sqlite3 build. 2020-09-23 02:17:44 +00:00
libssp libssp: don't compile with -fstack-protector* 2020-03-14 15:15:27 +00:00
libssp_nonshared Provide libssp based on libc 2020-01-04 20:19:25 +00:00
libstats Make use of the stats(3) framework in the TCP stack. 2019-12-02 20:58:04 +00:00
libstdbuf
libstdthreads Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libsysdecode Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
libtacplus libtacplus: Remove bogus srandomdev+random 2019-12-13 05:11:34 +00:00
libtelnet
libthr build: provide a default WARNS for all in-tree builds 2020-09-18 17:17:46 +00:00
libthread_db Remove libthr, csu, libthread_db and testfloat sparc64 specific directories. 2020-02-27 04:44:58 +00:00
libucl Only set WARNS if not defined 2020-09-11 13:28:37 +00:00
libufs Update the libufs cgget() and cgput() interfaces to have a similar 2020-09-19 22:48:30 +00:00
libugidfw Deduplicate fsid comparisons 2020-05-21 01:55:35 +00:00
libulog Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libunbound MFV r361322: 2020-05-21 21:00:46 +00:00
libusb Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
libusbhid USB HID descriptors may push/pop the current state to allow 2020-06-05 07:57:16 +00:00
libutil Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
libveriexec Do not claim libbearssl et al are INTERNALLIB 2020-04-01 05:45:12 +00:00
libvgl Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libvmmapi vmm(4), bhyve(8): Expose kernel-emulated special devices to userspace 2020-05-15 15:54:22 +00:00
libwrap Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libxo build: provide a default WARNS for all in-tree builds 2020-09-18 17:17:46 +00:00
liby
libypclnt Update Makefile.depend files 2019-12-11 17:37:53 +00:00
libz Generate zlib.pc from source. 2020-05-12 01:47:33 +00:00
libzstd Only set WARNS if not defined 2020-09-11 13:28:37 +00:00
msun Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
ncurses Pass the full CFLAGS to cpp for MKlib_gen.sh. 2020-08-03 17:53:15 +00:00
ofed build: provide a default WARNS for all in-tree builds 2020-09-18 17:17:46 +00:00
tests
Makefile Add virtio-9p (aka VirtFS) filesystem sharing to bhyve. 2020-10-03 19:05:13 +00:00
Makefile.inc build: provide a default WARNS for all in-tree builds 2020-09-18 17:17:46 +00:00