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Florian Weimer b99b0f93ee nss: Use "files dns" as the default for the hosts database (bug 28700)
This matches what is currently in nss/nsswitch.conf.  The new ordering
matches what most distributions use in their installed configuration
files.

It is common to add localhost to /etc/hosts because the name does not
exist in the DNS, but is commonly used as a host name.

With the built-in "dns [!UNAVAIL=return] files" default, dns is
searched first and provides an answer for "localhost" (NXDOMAIN).
We never look at the files database as a result, so the contents of
/etc/hosts is ignored.  This means that "getent hosts localhost"
fail without a /etc/nsswitch.conf file, even though the host name
is listed in /etc/hosts.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2021-12-17 12:01:25 +01:00
ChangeLog.old Update ChangeLog.old/ChangeLog.23. 2021-08-01 21:33:43 -04:00
argp Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
assert Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
benchtests benchtests: Add partial overlap case in bench-memmove-walk.c 2021-11-06 16:17:59 -05:00
bits nptl: Extract <bits/atomic_wide_counter.h> from pthread_cond_common.c 2021-11-17 12:20:13 +01:00
catgets Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
conform Use $(pie-default) with conformtest 2021-09-17 19:24:14 +00:00
crypt Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
csu hurd: Add rules for static PIE build 2021-12-12 00:42:13 +01:00
ctype Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
debug debug: Add tests for _FORTIFY_SOURCE=3 2021-10-20 18:13:05 +05:30
dirent Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
dlfcn Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
elf malloc: Add Huge Page support for mmap 2021-12-15 17:35:38 -03:00
gmon hurd: Fix gmon-static 2021-12-12 00:42:12 +01:00
gnulib Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
grp Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
gshadow Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
hesiod Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
htl htl: Fix sigset of main thread 2021-09-26 02:40:26 +02:00
hurd hurd: Let report-wait use a weak reference to _hurd_itimer_thread 2021-11-28 21:26:25 +01:00
iconv iconv: Use TIMEOUTFACTOR for iconv test timeout 2021-10-21 11:11:07 -03:00
iconvdata Fix The GNU ToolChain Authors copyright notice 2021-12-17 07:59:45 +05:30
include malloc: Add THP/madvise support for sbrk 2021-12-15 17:35:15 -03:00
inet Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
intl intl: Emit no lines in bison generated files 2021-12-14 09:33:25 -03:00
io io: Refactor close_range and closefrom 2021-11-24 09:09:37 -03:00
libio Make sure that the fortified function conditionals are constant 2021-10-20 18:12:41 +05:30
locale localedef: check magic value on archive load [BZ #28650] 2021-12-07 23:32:53 +01:00
localedata localedata: add new locale ab_GE 2021-12-16 14:37:14 +00:00
login login: Add back libutil as an empty library 2021-10-29 06:18:55 +09:00
mach mach: Fix spurious inclusion of stack_chk_fail_local in libmachuser.a 2021-12-14 01:01:48 +01:00
malloc Remove upper limit on tunable MALLOC_MMAP_THRESHOLD 2021-12-16 17:24:37 +00:00
manual nss: Use "files dns" as the default for the hosts database (bug 28700) 2021-12-17 12:01:25 +01:00
math math: Remove the error handling wrapper from hypot and hypotf 2021-12-13 10:08:46 -03:00
mathvec Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
misc Fix __minimal_malloc segfaults in __mmap due to stack-protector 2021-12-16 15:19:28 +01:00
nis Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
nptl nptl: rseq failure after registration on main thread is fatal 2021-12-09 09:49:32 +01:00
nptl_db Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
nscd Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
nss nss: Use "files dns" as the default for the hosts database (bug 28700) 2021-12-17 12:01:25 +01:00
po po/nl.po: Update Dutch translation. 2021-08-01 20:52:28 -04:00
posix regex: fix buffer read overrun in search [BZ#28470] 2021-11-24 14:16:09 -08:00
pwd Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
resolv resolv: Avoid GCC 12 false positive warning [BZ #28439]. 2021-10-11 09:36:57 -06:00
resource y2038: Add support for 64-bit time on legacy ABIs 2021-06-15 10:42:11 -03:00
rt Fix The GNU ToolChain Authors copyright notice 2021-12-17 07:59:45 +05:30
scripts Fix The GNU ToolChain Authors copyright notice 2021-12-17 07:59:45 +05:30
setjmp setjmp: Replace jmp_buf-macros.h with jmp_buf-macros.sym 2021-11-22 13:43:22 -03:00
shadow Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
signal Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
socket socket: Do not use AF_NETLINK in __opensock 2021-11-22 14:47:13 +01:00
soft-fp Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
stdio-common Support C2X printf %b, %B 2021-11-10 15:52:21 +00:00
stdlib Add alloc_align attribute to memalign et al 2021-10-21 00:19:20 +01:00
string String: test-memcpy used unaligned types for buffers [BZ 28572] 2021-12-07 22:19:50 -06:00
sunrpc Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
support Add --with-timeoutfactor=NUM to specify TIMEOUTFACTOR 2021-12-04 12:58:28 -08:00
sysdeps arm: Guard ucontext _rtld_global_ro access by SHARED, not PIC macro 2021-12-17 11:48:44 +01:00
sysvipc Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
termios Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
time Fix subscript error with odd TZif file [BZ #28338] 2021-10-07 11:09:16 -03:00
timezone tst-tzset: output reason when creating 4GiB file fails 2021-11-13 08:08:47 +09:00
wcsmbs Support C2X printf %b, %B 2021-11-10 15:52:21 +00:00
wctype Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
.gitattributes Assume __NR_openat is always defined 2016-03-23 23:35:08 +01:00
.gitignore Add *.pyc to .gitignore 2015-05-18 15:26:26 +05:30
CONTRIBUTED-BY Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
COPYING
COPYING.LIB
INSTALL Replace --enable-static-pie with --disable-default-pie 2021-12-13 08:08:59 +05:30
LICENSES Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
MAINTAINERS Add MAINTAINERS 2017-05-11 13:38:30 -04:00
Makeconfig Fix The GNU ToolChain Authors copyright notice 2021-12-17 07:59:45 +05:30
Makefile testrun.sh: Add support for --tool=rpctrace 2021-09-10 01:24:10 +02:00
Makefile.help Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Makefile.in New make target to only build benchmark binaries 2016-04-20 10:23:28 +05:30
Makerules Use LFS and 64 bit time for installed programs (BZ #15333) 2021-12-15 09:01:01 -03:00
NEWS malloc: Add Huge Page support for mmap 2021-12-15 17:35:38 -03:00
README Documentation for the RISC-V 32-bit port 2020-08-27 08:17:44 -07:00
Rules malloc: Add Huge Page support for mmap 2021-12-15 17:35:38 -03:00
SHARED-FILES Mention today's regex merge in SHARED-FILES 2021-09-21 18:00:10 -07:00
abi-tags Remove the bulk of the NaCl port. 2017-05-20 08:09:10 -04:00
aclocal.m4 Fix LIBC_PROG_BINUTILS for -fuse-ld=lld 2021-10-29 09:21:37 -03:00
config.h.in Replace --enable-static-pie with --disable-default-pie 2021-12-13 08:08:59 +05:30
config.make.in Replace --enable-static-pie with --disable-default-pie 2021-12-13 08:08:59 +05:30
configure Replace --enable-static-pie with --disable-default-pie 2021-12-13 08:08:59 +05:30
configure.ac Replace --enable-static-pie with --disable-default-pie 2021-12-13 08:08:59 +05:30
extra-lib.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
gen-locales.mk Improve gen-locales.mk and gen-locale.sh to make test files with @ options work 2018-02-27 17:01:57 +01:00
libc-abis riscv: support GNU indirect function 2021-01-10 21:25:13 -05:00
libof-iterator.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
o-iterator.mk
shlib-versions Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
test-skeleton.c Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
version.h Open master branch for glibc 2.35 development 2021-08-01 21:54:40 -04:00

README

This directory contains the sources of the GNU C Library.
See the file "version.h" for what release version you have.

The GNU C Library is the standard system C library for all GNU systems,
and is an important part of what makes up a GNU system.  It provides the
system API for all programs written in C and C-compatible languages such
as C++ and Objective C; the runtime facilities of other programming
languages use the C library to access the underlying operating system.

In GNU/Linux systems, the C library works with the Linux kernel to
implement the operating system behavior seen by user applications.
In GNU/Hurd systems, it works with a microkernel and Hurd servers.

The GNU C Library implements much of the POSIX.1 functionality in the
GNU/Hurd system, using configurations i[4567]86-*-gnu.

When working with Linux kernels, this version of the GNU C Library
requires Linux kernel version 3.2 or later.

Also note that the shared version of the libgcc_s library must be
installed for the pthread library to work correctly.

The GNU C Library supports these configurations for using Linux kernels:

	aarch64*-*-linux-gnu
	alpha*-*-linux-gnu
	arc*-*-linux-gnu
	arm-*-linux-gnueabi
	csky-*-linux-gnuabiv2
	hppa-*-linux-gnu
	i[4567]86-*-linux-gnu
	x86_64-*-linux-gnu	Can build either x86_64 or x32
	ia64-*-linux-gnu
	m68k-*-linux-gnu
	microblaze*-*-linux-gnu
	mips-*-linux-gnu
	mips64-*-linux-gnu
	powerpc-*-linux-gnu	Hardware or software floating point, BE only.
	powerpc64*-*-linux-gnu	Big-endian and little-endian.
	s390-*-linux-gnu
	s390x-*-linux-gnu
	riscv32-*-linux-gnu
	riscv64-*-linux-gnu
	sh[34]-*-linux-gnu
	sparc*-*-linux-gnu
	sparc64*-*-linux-gnu

If you are interested in doing a port, please contact the glibc
maintainers; see https://www.gnu.org/software/libc/ for more
information.

See the file INSTALL to find out how to configure, build, and install
the GNU C Library.  You might also consider reading the WWW pages for
the C library at https://www.gnu.org/software/libc/.

The GNU C Library is (almost) completely documented by the Texinfo manual
found in the `manual/' subdirectory.  The manual is still being updated
and contains some known errors and omissions; we regret that we do not
have the resources to work on the manual as much as we would like.  For
corrections to the manual, please file a bug in the `manual' component,
following the bug-reporting instructions below.  Please be sure to check
the manual in the current development sources to see if your problem has
already been corrected.

Please see https://www.gnu.org/software/libc/bugs.html for bug reporting
information.  We are now using the Bugzilla system to track all bug reports.
This web page gives detailed information on how to report bugs properly.

The GNU C Library is free software.  See the file COPYING.LIB for copying
conditions, and LICENSES for notices about a few contributions that require
these additional notices to be distributed.  License copyright years may be
listed using range notation, e.g., 1996-2015, indicating that every year in
the range, inclusive, is a copyrightable year that would otherwise be listed
individually.