1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2013 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 10060, 10062, 10357, 11120, 11561, 12723, 13550, 13889, 13951, 13988,
13 14142, 14176, 14200, 14280, 14293, 14317, 14327, 14478, 14496, 14686,
14 14812, 14888, 14920, 14952, 14964, 14981, 14982, 14985, 14994, 14996,
15 15003, 15006, 15007, 15020, 15023, 15036, 15054, 15055, 15062, 15078,
16 15084, 15085, 15086, 15160, 15214, 15221, 15232, 15234, 15283, 15285,
17 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336, 15337,
18 15342, 15346, 15361, 15366, 15380, 15394, 15405, 15406, 15409, 15416,
21 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
24 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
25 fixed (Bugzilla #15330).
27 * Add support for calling C++11 thread_local object destructors on thread
28 and program exit. This needs compiler support for offloading C++11
29 destructor calls to glibc.
31 * Improved worst case performance of libm functions with double inputs and
34 * Support for priority inherited mutexes in pthread condition variables on
35 non-x86 architectures.
37 * Added a benchmark framework to track performance of functions in glibc.
39 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
40 It is based on draft TS 18661 and currently enabled as a GNU extension.
44 * The following bugs are resolved with this release:
46 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
47 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
48 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
49 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
50 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
51 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
52 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
53 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
54 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
55 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
56 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
57 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
58 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
59 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
60 14889, 14893, 14898, 14914.
62 * Optimization of memcpy for MIPS.
64 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
65 EMFILE has been fixed (Bugzilla #14889).
67 * The add-on ports collection is now distributed in the "ports" subdirectory
68 of the main GNU C Library distribution, rather than separately.
70 * Port to ARM AArch64 contributed by Linaro.
72 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
73 Optimized versions of memcpy, memset, and memcmp added for System z10 and
75 Implemented by Andreas Krebbel.
77 * The new function secure_getenv allows secure access to the environment,
78 returning NULL if running in a SUID/SGID process. This function replaces
79 the internal function __secure_getenv.
81 * SystemTap static probes have been added into the dynamic linker.
82 Implemented by Gary Benson.
84 * Optimizations of string functions strstr, strcasestr and memmem.
85 Implemented by Maxim Kuvyrkov.
87 * The minimum Linux kernel version that this version of the GNU C Library
88 can be used with is 2.6.16.
90 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
91 powerpc POWER7. Implemented by Will Schmidt.
93 * New configure option --disable-nscd builds the C library such that it
94 never attempts to contact the Name Service Caching Daemon (nscd).
95 New configure option --disable-build-nscd avoids building nscd itself;
96 this is the default if --disable-nscd is used.
98 * Improved support for cross-compilation, including cross-testing and
99 bootstrap builds without a previously built glibc.
101 * Several testsuite tests are now able to test multiple IFUNC variants of an
102 interface, rather than just testing the one that would be chooen by
105 * New configure options --with-bugurl and --with-pkgversion, for
106 distributors to use to embed their bug-reporting and package version
107 information in --help and --version output.
109 * The ttyname and ttyname_r functions on Linux now fall back to searching for
110 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
111 allows creation of chroots without the procfs mounted on /proc.
113 * The `crypt' function now fails if passed salt bytes that violate the
114 specification for those values. On Linux, the `crypt' function will
115 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
116 enabled, and fail on encrypted strings using the MD5 or DES algorithm
117 when the mode is enabled.
119 * The `clock_*' suite of functions (declared in <time.h>) is now available
120 directly in the main C library. Previously it was necessary to link with
121 -lrt to use these functions. This change has the effect that a
122 single-threaded program that uses a function such as `clock_gettime' (and
123 is not linked with -lrt) will no longer implicitly load the pthreads
124 library at runtime and so will not suffer the overheads associated with
125 multi-thread support in other code such as the C++ runtime library.
127 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
132 * The following bugs are resolved with this release:
134 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
135 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
136 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
137 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
138 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
139 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
140 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
141 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
142 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
143 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
144 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
145 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
146 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
147 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
148 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
149 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
150 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
151 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
152 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
153 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
154 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
155 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
158 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
159 configuring glibc with:
160 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
161 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
162 Implemented by H.J. Lu.
166 + define static_assert
168 + do not declare gets
170 + declare at_quick_exit and quick_exit also for ISO C11
172 + aligned_alloc. NB: The code is deliberately allows the size parameter
173 to not be a multiple of the alignment. This is a moronic requirement
174 in the standard but it is only a requirement on the caller, not the
179 + uchar.h support added
181 + CMPLX, CMPLXF, CMPLXL added
183 Implemented by Ulrich Drepper.
185 * Support for the IA-64 has been moved to ports.
187 * Remove support for anything but ELF binary format
189 * Checking versions of poll, ppoll added.
190 Implemented by Ulrich Drepper.
192 * More generic and 64-bit performance optimizations to math functions.
193 Implemented by Ulrich Drepper.
195 * New configure option --enable-obsolete-rpc makes the deprecated RPC
196 headers and functions available at compile time as they were before
197 version 2.14. This option will be removed at some time in the future
198 after the TI-RPC library becomes fully sufficient for the needs of
199 existing applications.
201 * Compatibility code for Linux kernel versions before 2.4 has been removed.
202 Note that glibc is not expected to work with any Linux kernel version
205 * New header <sys/auxv.h> and function getauxval allowing easy access to
206 the AT_* key-value pairs passed from the Linux kernel. The header also
207 defines the HWCAP_* bits associated with the AT_HWCAP key.
209 * New locales: mag_IN
211 * New configure option --enable-systemtap builds SystemTap static probes
212 into libc for setjmp and longjmp and into libpthread for various operations.
213 So far the setjmp/longjmp probes and some of the libpthread probes are
214 provided only for i*86 and x86_64.
215 Implemented by Roland McGrath and Rayson Ho.
217 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
219 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
222 * More optimized functions for SPARC. Implemented by David S. Miller.
224 * Improved support for cross-compilation, especially bootstrap builds
225 without a previously built glibc.
227 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
228 Chris Metcalf from Tilera.
230 * Support for the old ARM ABI has been removed from ports. Only the EABI is
231 now supported for ARM processors.
233 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
234 as the name of the dynamic linker, to distinguish it from the
235 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
237 * Support for CRIS has been removed from ports.
239 * A new class of installed header has been documented for low-level
240 platform-specific functionality. PowerPC added the first instance with a
241 function to provide time base register access. Contributed by Tulio
242 Magno Quites Machado Filho.
244 * ix86 configurations now install header files that are consistent with
245 what x86-64 configurations install. These same header files can be used
246 for -m32, -m64, or -mx32 builds.
247 Contributed by H.J. Lu.
249 * Math library bug fixes. A thorough audit of all open math library bugs was
250 conducted by Joseph Myers. Significant progress was made on many math
251 library bugs resulting in more accurate exceptions and function results.
252 Many thanks to all those that contributed including Andreas Jaeger for his
253 patch review and work on the x87 trigonometric instruction issues.
255 * Timezone data is no longer installed. Timezone-related binaries and scripts
256 will continue to be installed. Users should obtain their timezone data from
257 their distribution provider or from the tzdata package at
258 <ftp://munnari.oz.au/pub/>.
262 * The following bugs are resolved with this release:
264 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
265 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
266 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
267 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
268 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
269 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
270 13484, 13506, 13515, 13523, 13524, 13538, 13540
272 * New program pldd to list loaded object of a process
273 Implemented by Ulrich Drepper.
275 * Add nss_db support back to glibc. No more dependency on Berkeley db
276 and support for initgroups lookups.
277 Implemented by Ulrich Drepper.
279 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
280 Contributed by HJ Lu.
282 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
283 Contributed by HJ Lu.
285 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
286 on x86-32 and x86-64.
287 Contributed by Liubov Dmitrieva.
289 * Optimized strchr and strrchr for SSE on x86-32.
290 Contributed by Liubov Dmitrieva.
292 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
293 for x86-64 and x86-32.
294 Contributed by Liubov Dmitrieva.
296 * New interfaces: scandirat, scandirat64
297 Implemented by Ulrich Drepper.
299 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
300 Implemented by Ulrich Drepper.
302 * nscd now also caches the netgroup database.
303 Implemented by Ulrich Drepper.
305 * Integrate libm with gcc's -ffinite-math-only option.
306 Implemented by Ulrich Drepper.
308 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
309 to math functions. Implemented by Ulrich Drepper.
311 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
312 Implemented by Ulrich Drepper.
314 * New Linux interfaces: process_vm_readv, process_vm_writev
316 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
317 Implemented by Ulrich Drepper.
319 * Optimized nearbyint and strcasecmp for PPC.
320 Implemented by Adhemerval Zanella.
322 * New locales: bho_IN, unm_US, es_CU, ta_LK
326 * The following bugs are resolved with this release:
328 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
329 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
330 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
331 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
332 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
333 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
334 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
335 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
336 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
337 12795, 12811, 12813, 12814, 12841
339 * The RPC implementation in libc is obsoleted. Old programs keep working
340 but new programs cannot be linked with the routines in libc anymore.
341 Programs in need of RPC functionality must be linked against TI-RPC.
342 The TI-RPC implementation is IPv6 enabled and there are other benefits.
344 Visible changes of this change include (obviously) the inability to link
345 programs using RPC functions without referencing the TI-RPC library and the
346 removal of the RPC headers from the glibc headers.
347 Implemented by Ulrich Drepper.
349 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
350 syncfs, setns, sendmmsg
352 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
353 yue_HK, lij_IT, mhr_RU
355 * New encodings: CP770, CP771, CP772, CP773, CP774
357 * New program sotruss to trace calls through PLTs
358 Implemented by Ulrich Drepper.
360 * The malloc hook implementation is marked deprecated and will be removed
361 from the default implementation in the next version. The design never
362 worked ever since the introduction of threads. Even programs which do
363 not create threads themselves can use multiple threads created internally.
367 * The following bugs are resolved with this release:
369 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
370 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
371 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
372 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
375 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
377 * POWER7 optimizations: memset, memcmp, strncmp
379 * New optimized string functions for x86-64: strnlen (SSE2),
380 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
381 Implemented by Ulrich Drepper.
385 * The following bugs are resolved with this release:
387 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
388 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
389 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
390 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
391 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
392 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
393 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
394 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
396 * New interfaces: pthread_getname_np, pthread_setname_np
398 * New Linux interface: recvmmsg
400 * STT_GNU_IFUNC implemented for Sparc by David Miller.
402 * The dynamic linker now recognizes supported ABI versions from the
403 EI_ABIVERSION field in the ELF header.
404 Implemented by Ulrich Drepper.
406 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
407 will not be used to fill in password fields in the passwd.byname replies.
408 Instead it is used to synthesize the shadow.byname table, should it be
409 missing. This is a useful mode in some installations involving Solaris.
410 Implemented by Ulrich Drepper.
412 * New locales: kok_IN, sq_MK, cv_RU
416 * The following bugs are resolved with this release:
418 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
419 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
420 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
421 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
422 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
423 10789, 10817, 10823, 10840, 10847
425 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
427 Implemented by Ulrich Drepper.
429 * Checking version of longjmp added that fails if an uninitialized stack
430 frame would be created. Implemented by Ulrich Drepper.
432 * STT_GNU_IFUNC is now supported in static executables.
433 Implemented by H.J. Lu.
435 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
437 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
438 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
439 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
440 Contributed by H.J. Lu.
442 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
443 Implemented by Ulrich Drepper.
445 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
447 Contributed by H.J. Lu.
449 * Support for fma instruction in AVX on x86-64.
450 Implemented by H.J. Lu and Ulrich Drepper.
452 * AVX support in x86-64 auditing support in ld.so.
453 Implemented by H.J. Lu.
455 * STB_GNU_UNIQUE support added.
456 Implemented by Ulrich Drepper.
458 * Implement second fallback mode for optimized DNS lookup for even more
459 broken environments. If two requests from the same port are not
460 handled correctly close the socket and open a new one before sending
461 the second request. The 'single-request-reopen' option in /etc/resolv.conf
462 can be used to select this mode right away, instead of rediscovering the
463 necessity is every process again.
464 Implemented by Ulrich Drepper.
466 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
467 Implemented by Adam Tkac.
469 * Optimized iconv conversions for S390x.
470 Implemented by Andreas Krebbel.
472 * Using condvars with PI mutexes is now more efficient due to kernel
473 support for requeueing to PI futexes. NPTL support added for x86-64.
474 Implemented by Ulrich Drepper.
476 * New locales: ps_AF, my_MM
480 * The following bugs are resolved with this release:
482 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
483 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
484 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
485 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
486 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
488 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
489 Implemented by Ulrich Drepper.
491 * New Linux interfaces: accept4, fallocate, fallocate64.
492 Implemented by Ulrich Drepper.
494 * Correct declarations of string function when used in C++ code. This
495 could lead to compile errors for invalid C++ code.
497 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
500 * New POSIX 2008 interface: psiginfo
501 Implemented by Ulrich Drepper.
503 * New ISO C++1x interfaces: quick_exit, at_quick_exit
504 Implemented by Ulrich Drepper.
506 * Support for selecting between multiple function definitions at runtime
507 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
509 * The libcrypt library can now use the hash function implementations in
510 NSS. Implemented by Ulrich Drepper.
512 * The malloc implementation can be compiled to be less memory efficient
513 but higher performing in multi-threaded programs.
514 Implemented by Ulrich Drepper.
516 * New locales: nan_TW@latin, ks_IN
518 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
519 Implemented by Ulrich Drepper.
521 * Extended printf hook support. It is possible to use user-defined types
522 and extend existing format specifiers.
523 Implemented by Ulrich Drepper.
525 * Handling for group shadow files has been added.
526 Implemented by Ulrich Drepper.
528 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
529 servers (the case, e.g., for some people using the built-in DNS
530 server in ADSL modems/routers). There is a once-per-process timeout
531 in case of a broken server. To avoid it, users can run nscd or put
532 'options single-request' in /etc/resolv.conf.
533 Implemented by Ulrich Drepper.
537 * The following bugs are resolved with this release:
539 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
540 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
541 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
542 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
543 6968, 6974, 6980, 6995, 7008, 7009, 7029
545 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
546 up at the same time. Implemented by Ulrich Drepper.
548 * TLS descriptors for LD and GD on x86 and x86-64.
549 Implemented by Alexandre Oliva.
551 * getaddrinfo now handles DCCP and UDPlite.
552 Implemented by Ulrich Drepper.
554 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
555 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
556 Implemented by Ulrich Drepper.
558 * New implementation of memmem, strstr, and strcasestr which is O(n).
559 Implemented by Eric Blake.
561 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
563 * Implement "e" option for popen to open file descriptor with the
564 close-on-exec flag set. Implemented by Ulrich Drepper.
566 * Implement "b" mode for fmemopen. In this mode writes writes don't
567 implicitly add a NUL byte and seeks from the end of the buffer really
568 use the buffer end, not the string length as the basis.
569 Implemented by Ulrich Drepper.
571 * Many functions, exported and internal, now atomically set the close-on-exec
572 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
574 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
576 Implemented by Pravin Satpute.
578 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
582 * The following bugs are resolved with this release:
584 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
585 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
586 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
587 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
588 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
589 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
590 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
592 * New locales: bo_CN, bo_IN, shs_CA.
594 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
596 * Sorting rules for some Indian languages (Devanagari and Gujarati).
597 Implemented by Pravin Satpute.
599 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
601 * nscd caches now all timeouts for DNS entries
602 Implemented by Ulrich Drepper.
604 * nscd is more efficient and wakes up less often.
605 Implemented by Ulrich Drepper.
607 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
608 vdprintf, and obstack_vprintf.
609 Implemented by Jakub Jelinek.
611 * Faster memset for x86-64.
612 Implemented by Harsha Jagasia and H.J. Lu.
614 * Faster memcpy on x86.
615 Implemented by Ulrich Drepper.
617 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
618 Implemented by Ulrich Drepper.
620 * Faster sqrt and sqrtf implemention for some PPC variants.
621 Implemented by Steven Munroe.
625 * The following bugs are resolved with this release:
627 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
628 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
629 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
630 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
631 5071, 5103, 5104, 5112, 5113, 5184, 5186
633 * More checking functions: fread, fread_unlocked, open*, mq_open.
634 Implemented by Jakub Jelinek and Ulrich Drepper.
636 * Extend fortification to C++. Implemented by Jakub Jelinek.
638 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
639 by not recognizing 'a' as a modifier when those specs are requested.
640 Implemented by Jakub Jelinek.
642 * PPC optimizations to math and string functions.
643 Implemented by Steven Munroe.
645 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
646 options to be passed. Implemented by Ulrich Drepper.
648 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
650 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
651 Implemented by Ulrich Drepper.
653 * Handle private futexes in the NPTL implementation.
654 Implemented by Jakub Jelinek and Ulrich Drepper.
656 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
657 Implemented by Roland McGrath and Ulrich Drepper.
659 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
661 * SHA-256 and SHA-512 based password encryption.
662 Implemented by Ulrich Drepper.
664 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
665 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
668 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
669 Implemented by Ulrich Drepper.
673 * The following bugs are resolved with this release:
675 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
676 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
677 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
678 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
679 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
680 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
681 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
684 * New Linux interfaces: epoll_pwait, sched_getcpu.
686 * New generic interfaces: strerror_l.
688 * nscd can now cache the services database. Implemented by Ulrich Drepper.
692 * The following bugs are resolved with this release:
694 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
695 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
696 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
697 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
698 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
699 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
700 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
701 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
702 3225, 3251, 3252, 3253, 3273
704 * For Linux, the sorting of addresses returned by getaddrinfo now also
705 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
706 Implemented by Ulrich Drepper.
708 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
709 Implemented by Ulrich Drepper.
711 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
713 * New iconv module for MIK. Contributed by Alexander Shopov.
715 * For sites with broken group and/or passwd database, the auto-propagate
716 option of nscd can prevent creating ID lookup entries from the results
717 of a name lookup and vice versa. This usually is no problem but some
718 site might have problems with the default behavior.
719 Implemented by Ulrich Drepper.
721 * Iterating over entire database in NIS can be slow. With the
722 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
723 to trade time for memory. The entire database will be read at once.
724 Implemented by Ulrich Drepper.
726 * The interfaces introduced in RFC 3542 have been implemented by
729 * Support for the new ELF hash table format was added by Ulrich Drepper.
731 * Support for priority inheritance mutexes added by Jakub Jelinek and
734 * Support for priority protected mutexes added by Jakub Jelinek.
736 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
737 or_IN, csb_PL, fy_NL, sr_ME.
741 * More overflow detection functions.
743 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
744 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
746 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
747 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
748 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
749 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
750 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
751 by Masahide Washizawa.
753 * It is now possible to install audit libraries for the dynamic linker using
754 LD_AUDIT. Implemented by Ulrich Drepper.
756 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
757 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
758 For a libc and libpthread that works well on Linux 2.4 kernels, we
759 recommend using the stable 2.3 branch.
761 * The new function open_wmemstream acts like open_memstream,
762 but uses a wchar_t wide character buffer.
764 * The new function ppoll is an improved version of poll, similar to pselect.
766 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
767 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
768 renameat, unlinkat, linkat, symlinkat, readlinkat.
770 * New Linux kernel system calls: unshare,
771 inotify_init, inotify_add_watch, inotify_rm_watch.
773 * The euidaccess function is now also known by the alias eaccess,
774 for compatibility with some other systems.
776 * Timezone data updated to 2006b version.
780 * The following bugs are resolved with this release:
782 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
783 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
784 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
785 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
786 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
787 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
789 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
791 * As of this release, GCC 4 can be used to compile the C Library.
793 * Timezone data updated to 2005m version.
797 * The following bugs are resolved with this release:
799 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
800 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
801 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
802 777, 787, 821, 822, 823, 825
804 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
808 * Support for RFC 3678. Real implementations exist only for Linux so far.
809 Implemented by Ulrich Drepper.
811 * nscd can now cache entries persistently. Expiring entries are reloaded.
812 For speedups the cache can be shared in memory with client processes.
813 Implemented by Ulrich Drepper.
815 * nscd can now perform SELinux checks.
816 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
818 * getaddrinfo queries are now cached. Canonical name lookup is performed
820 Implemented by Ulrich Drepper.
822 * The nothrow function attribute is used when headers are used by gcc when
823 compiling C code. This can avoid significant amounts of exception
826 * The malloc functions perform more error checking and are stricter when
827 it comes to reacting on errors. The default action is to terminate
828 the process after showing an error message. Implemented by Ulrich Drepper.
830 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
831 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
833 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
834 namespaces using the new function dlmopen(). This feature is of course,
835 like most other dynamic loading functionality, not available in statically
836 linked applications. Implemented by Ulrich Drepper.
838 * Low-overhead boundary checking variants of string and some stdio functions
839 were added. These are to be used in conjunction with a gcc patch by
840 Jakub Jelinek which adds calls to these functions if possible.
841 Implemented by Jakub Jelinek and Ulrich Drepper.
843 * Old code for several operating systems and machine architectures that
844 have not been in working condition in a long time have been removed from
845 the main source tree maintained by the GNU C Library's maintainers.
846 These files are now reside in the separate `ports' source module
847 that is usable as an add-on when building the library.
851 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
852 interrogate the dynamic linker, compatible with the Solaris interface.
854 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
855 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
857 * getifaddrs now uses the netlink interface on Linux to get its information.
858 Implemented by Thorsten Kukuk.
860 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
861 Implemented by Ulrich Drepper.
863 * support for non-executable stacks on x86 has been added. Changes mostly
866 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
869 * getaddrinfo now performs destination address selection according to
874 * Thread-safe interfaces for many functions that access locale data
875 were added in version 2.3, but these features were omitted from NEWS.
876 Many functions have variants with an `_l' suffix that take a `locale_t'
877 object as a parameter rather than consulting the current locale.
878 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
879 create and maintain `locale_t' objects. Additionally, the new function
880 `uselocale' sets "the current locale" (as used by functions not so
881 parameterized) set for an individual thread. These features were added
882 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
884 * The functions getresuid, getresgid, setresuid, and setresgid, which
885 have long been available on Linux, are now declared in <unistd.h>
886 and are now also available on the Hurd.
888 * ELF thread-local storage support (TLS) now works on x86-64.
890 * The new dynamic string token $LIB is expanded in shared library names.
891 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
893 * Aldy Hernandez contributed complete software floating point support for
894 PowerPC machines with no FPU.
896 * fexecve is implemented on Linux.
898 * The `btowc' function should work at least twice as fast due to
899 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
901 * With approriate thread add-ons cancelable functions are now implemented
902 in libc.so as well. No need to call the function in libpthread. This
903 change allowed to finally disable the incorrect and expensive handling
904 of weak definition in ld.so.
906 * Yet more PLT entries in libc.so have been removed. We finally arrived
907 at the bare minimum. Startup times improved appropriately.
909 * Support for the new Linux/x86 system call interface was added. The
910 AT_SYSINFO auxiliary vector entry is recognized and handled.
914 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
917 * iconv (the program and the interface) now accepts empty names (excluding
918 options like //TRANSLIT) to mean "use charset of current locale".
920 * localedef can now transliterate characters in strings which are not in
921 the provided charmap. The information from the input locale is used.
923 * Prelinking support was added for ELF targets. This requires additional
924 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
926 * Read-only stdio streams now use mmap to speed up operation by eliminating
927 copying and buffer underflows. To use add 'm' to the mode string of
928 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
930 * The malloc functions were completely rewritten by Wolfram Gloger based
931 on Doug Lea's malloc-2.7.0.c.
933 * Isamu Hasegawa contributed a completely new and POSIX-conformant
934 implementation of regex.
936 * Bruno Haible upgraded the iconv and locale implementation to support
939 * Contents of the LC_* and LANG environment variables in the CEN style are
940 not recognized anymore. It never was used. Change by Ulrich Drepper.
942 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
943 thread-local storage (TLS) ABI on some platforms.
944 Changes by Ulrich Drepper. SH support by Kaz Kojima.
946 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
947 EUC-JISX0213, and TSCII.
949 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
950 BSD-compatible interface for getting all network interface addresses.
951 Implementation for IPv4 by Roland McGrath.
953 * Loading of locale data is faster due to the introduction of a locale
954 archive. Implemented by Roland McGrath and Ulrich Drepper.
956 * Startup times are significantly reduced by not using exported functions
957 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
960 * Steven Munroe contributed a port to PowerPC64/Linux.
964 * The Hurd now uses the GNU libio implementation of stdio rather than the
965 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
967 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
968 with the same behavior as the Linux system call of the same name.
972 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
973 128-bit long double format.
975 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
976 IBM1161, and IBM1162 charsets.
978 * Andreas Jaeger contributed a port to x86-64/Linux.
980 * Peter Bruin contributed a port to PowerPC/Hurd.
982 * libc functions using I/O streams now can handle wide-oriented streams
985 * optimizations in the dynamic linker. Binaries created by recent binutils
986 versions start up quicker due to reduced time spent on relocations.
988 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
992 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
993 asinh, atanh, j0 for the 128-bit long double format.
995 * Bruno Haible updated all the code handling Unicode in some form to
998 * Speed of regex for single-byte locales is back to previous levels.
999 Patch by Isamu Hasegawa.
1001 * Alpha, SPARC, and IA-64 now also using floating stacks.
1003 * Startup time of internationalized applications greatly improved through
1004 iconv cache. Use iconvconfig to generate the cache file.
1005 Contributed by Ulrich Drepper.
1007 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1008 severe performance problems. Patch by David Mosberger.
1010 * The Hurd port got a lot more functionality like AIO, various stdio
1011 extensions, etc. Mainly done by Roland McGrath.
1013 * mtrace can now lookup symbols in shared libraries.
1017 * Intel's IA-64 math library is largely integrated. It provides fast and
1018 accurate implementatations for most basic and standard math functions
1019 in float, double, and long double format.
1021 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1022 and asin for the 96-bit long double format and asin, log, tan for the
1023 128-bit long double format.
1025 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1026 The basic double functions exist today. Contributed by Abraham Ziv
1027 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1028 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1030 * An asynchronous name lookup library was added. The interface is designed
1031 after POSIX AIO. The proposal was circulated beforehand to get comments.
1032 No negative ones came in. Implemented by Ulrich Drepper.
1034 * Port to S390/64bit contributed by Martin Schwidefsky
1035 <schwidefsky@de.ibm.com>.
1037 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1038 of functions for Linux/IA-64.
1040 * The RPC code is now thread safe. Threads can now use the same service
1041 of different services at the same time. Patch by Eric Norum
1042 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1044 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1045 family of functions for Linux/S390.
1047 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1048 of functions for Linux/x86.
1050 * Port to Linux/CRIS contributed by Axis Communications.
1054 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1055 we can now check for namespace violations and missing declarations. The
1056 result is that almost all headers are now Unix-compliant (as defined in
1057 the upcoming XPG6). The negative side is that some programs might need
1058 corrections, too, if they depend on the incorrect form of the headers in
1059 previous versions which defined too many symbols and included too many
1062 * regex now handles multibyte character sets correctly.
1063 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1065 * iconv (the program) does now conform to the upcoming XPG6 and handles
1066 charmaps. Instead of the charset names the path of charmaps can be
1067 provided and the conversion happens based on this data.
1068 Contributed by Ulrich Drepper.
1070 * The locale program now provides detailed information about the installed
1075 only lists the names of the supported locales
1079 provides details such as country, language, and codeset name.
1080 Contributed by Ulrich Drepper.
1084 * The gencat program now parses the input file according to the charset
1085 selected by the LC_CTYPE category. This is important for stateful
1086 character sets. To make generating catalogs easier there is a way
1087 to overwrite the charset selected by the locale: before the first
1088 message or $ quote line the catalog can contain a line like
1090 $ codeset=ISO-8859-2
1092 to select the charset (ISO-8859-2 in this case).
1094 Implemented by Shinya Hanataka and Ulrich Drepper.
1096 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1097 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1098 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1100 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1101 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1103 * The LANGUAGE environment variable is now ignored unless the locale is
1104 changed from the default "C" locale.
1106 * The usual bug fixes.
1110 * Greg McGary added runtime support for bounds checking using gcc's
1111 new -fbounded-pointers option. ix86 target is complete. PowerPC
1114 * Thorsten Kukuk added secure mode support to nscd.
1116 * The Berkeley db libraries have been removed.
1118 Related, the nss_db module is now in a separate package since it
1119 obviously requires a database library being available.
1121 * Wide character I/O streams implemented by Ulrich Drepper.
1123 * Functions from the extended socket API added by Ulrich Drepper.
1125 * Functions feenableexcept and fedisableexcept to control the
1126 behaviour of individual exceptions have been added by Andreas Jaeger.
1128 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1130 * The resolver code has been updated from bind 8.2.3-T5B which supports
1131 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1134 This change could in some situations effect backward compatibility. Since
1135 now `_res' is a thread-local instead of a global variable, modifying it
1136 in one thread does not have any effect in other threads.
1138 The resolver library was also extended to allow IPv6 as the transport
1139 protocol for the requests. This work was done by Stig Venaas.
1141 * Compatibility code for K&R C compilers has been removed from the
1142 header files. A ISO C compiler is needed to use the library
1143 (conforming to either C89 or C99 standard).
1145 * Complete rewrite of the localedef program to support multibyte character
1146 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1147 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1148 Implemented by Ulrich Drepper.
1150 Bruno Haible significantly improved the generation and use of the data
1151 structures for the wide character tables.
1153 * Plural handling in gettext implemented by Ulrich Drepper.
1155 * The utmp daemon has been removed.
1157 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1159 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1162 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1164 * POSIX barriers implemented by Kaz Kylheku.
1166 * POSIX spawn function family implemented by Ulrich Drepper.
1168 * POSIX spinlocks are now available.
1170 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1172 * the configure option --enable-kernel=X.Y.Z allows to strip out
1173 compatibility for kernel versions before X.Y.Z. This is currently only
1174 implemented for Linux.
1176 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1177 field sin6_scope_id. This means that all programs using IPv6 should be
1178 recompiled. Don't expect binary compatibility with previous glibc
1181 * various conversion modules for IBM character sets contributed by
1184 * IA-64 port by Jes Sorensen and HJ Lu.
1198 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1200 * New xdr functions are added; some rpc functions are now 64bit clean.
1202 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1204 * Fixed known incompatibilities with glibc 2.0.
1206 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1208 * Optimized a number of functions (especially the ELF dynamic loader).
1210 * Update timezone data files.
1212 * lots of charmaps corrections
1214 * some new locale definitions and charmaps
1219 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1220 conform to POSIX member type requirements. Symbol versions have been
1221 adjusted as needed within the library, and for direct use by applications,
1222 but there is potential for problems if third-party libraries use
1223 struct timeval as part of their interface. This does not present
1224 a problem for X and other "essential" system libraries.
1226 * An additional locale model to support C++ Standard Library locale
1227 model and probably more was implemented by Ulrich Drepper.
1229 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1232 * Miles Bader provided the `argp' function family to support hierachical
1233 command line argument parsing, layered on top of getopt.
1235 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1237 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1240 * scanf recognizes the %a and %A format for scanning floating point numbers.
1242 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1243 information and interfaces for the available integer types.
1245 * about 130 new math functions were added to implement the ISO C9x math
1248 * the new header <complex.h> contains definitions of the complex math
1249 functions from ISO C 9X.
1251 * the new header <tgmath.h> defines generic macros to use complex or
1252 real valued functions.
1254 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1256 * Andreas Jaeger provided a test suite for the math library.
1258 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1260 * Ulrich Drepper added character set conversion functions (iconv).
1262 * Optimized string functions have been added.
1264 * The localedata addon is now part of glibc.
1266 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1268 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1269 daemon for NSS (nscd).
1271 Missing a better place here are some numbers on improvements. Under
1272 Linux 2.1.125 un-tar-ing the kernel sources takes
1276 using local files 12.19s 6.88s 22.91s
1278 using NIS 13.92s 8.91s 26.34s
1280 using NIS & nscd 10.37s 7.34s 25.30s
1282 using NIS+ 27.57s 30.37s 640.46s
1284 using NIS+ & nscd 10.25s 7.83s 26.51s
1286 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1288 Keep in mind that non-namelookup related operations dominate above times.
1289 It was just a common complain that using NIS+ unpacking the kernel is
1292 [1] The old nscd implementation is not available anymore since it was
1293 distributed with glibc up to version 2.0.98 and thus is now replaced.
1295 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1297 * Mark Kettenis provided a Hesiod NSS module.
1299 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1300 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1302 * rcmd can now handle netgroups (Dick Streefland).
1304 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1307 * Support for the IPv6 protocol has been added to the socket API, as per the
1308 latest draft standards.
1310 * Support for Linux 2.2 has been added.
1312 * Interface changes relative to the latest 2.0.x release:
1313 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1314 addseverity NEW: Unix98
1315 alphasort64 NEW: LFS
1316 argp_err_exit_status NEW: argp, GNU ext
1317 argp_error NEW: argp, GNU ext
1318 argp_failure NEW: argp, GNU ext
1319 argp_help NEW: argp, GNU ext
1320 argp_parse NEW: argp, GNU ext
1321 argp_program_bug_address NEW: argp, GNU ext
1322 argp_program_version NEW: argp, GNU ext
1323 argp_program_version_hook NEW: argp, GNU ext
1324 argp_state_help NEW: argp, GNU ext
1325 argp_usage NEW: argp, GNU ext
1326 authdes_create NEW: Secure RPC
1327 authdes_getucred NEW: Secure RPC
1328 authdes_pk_create NEW: Secure RPC
1329 backtrace NEW: GNU ext.
1330 backtrace_symbols NEW: GNU ext.
1331 backtrace_symbols_fd NEW: GNU ext.
1333 cacosf NEW: ISO C 9x
1334 cacosh NEW: ISO C 9x
1335 cacoshf NEW: ISO C 9x
1336 cacoshl NEW: ISO C 9x
1337 cacosl NEW: ISO C 9x
1344 casinf NEW: ISO C 9x
1345 casinh NEW: ISO C 9x
1346 casinhf NEW: ISO C 9x
1347 casinhl NEW: ISO C 9x
1348 casinl NEW: ISO C 9x
1350 catanf NEW: ISO C 9x
1351 catanh NEW: ISO C 9x
1352 catanhf NEW: ISO C 9x
1353 catanhl NEW: ISO C 9x
1354 catanl NEW: ISO C 9x
1355 cbc_crypt NEW: Secure RPC
1359 ccoshf NEW: ISO C 9x
1360 ccoshl NEW: ISO C 9x
1366 cimagf NEW: ISO C 9x
1367 cimagl NEW: ISO C 9x
1368 clearerr_locked REMOVED
1369 clntunix_create NEW: sunrpc ext
1371 clog10 NEW: ISO C 9x
1372 clog10f NEW: ISO C 9x
1373 clog10l NEW: ISO C 9x
1383 cprojf NEW: ISO C 9x
1384 cprojl NEW: ISO C 9x
1386 crealf NEW: ISO C 9x
1387 creall NEW: ISO C 9x
1392 csinhf NEW: ISO C 9x
1393 csinhl NEW: ISO C 9x
1396 csqrtf NEW: ISO C 9x
1397 csqrtl NEW: ISO C 9x
1401 ctanhf NEW: ISO C 9x
1402 ctanhl NEW: ISO C 9x
1404 des_setparity NEW: Secure RPC
1405 ecb_crypt NEW: Secure RPC
1406 endutxent NEW: Unix98
1408 exp10f NEW: ISO C 9x
1409 exp10l NEW: ISO C 9x
1413 fattach NEW: STREAMS
1414 fdetach NEW: STREAMS
1418 feclearexcept NEW: ISO C 9x
1419 fegetenv NEW: ISO C 9x
1420 fegetexceptflag NEW: ISO C 9x
1421 fegetround NEW: ISO C 9x
1422 feholdexcept NEW: ISO C 9x
1424 feraiseexcept NEW: ISO C 9x
1425 ferror_locked REMOVED
1426 fesetenv NEW: ISO C 9x
1427 fesetexceptflag NEW: ISO C 9x
1428 fesetround NEW: ISO C 9x
1429 fetestexcept NEW: ISO C 9x
1430 feupdateenv NEW: ISO C 9x
1431 fflush_locked REMOVED
1435 fgets_unlocked NEW: GNU ext.
1436 fileno_locked REMOVED
1448 fputc_locked REMOVED
1449 fputs_unlocked NEW: GNU ext.
1450 fread_unlocked NEW: GNU ext.
1455 fstatvfs NEW: Unix98
1459 ftruncate64 NEW: LFS
1461 fwrite_unlocked NEW: GNU ext.
1462 gai_strerror NEW: IPv6
1466 getchar_locked REMOVED
1468 getdate_err NEW: Unix98
1469 getdate_r NEW: GNU ext.
1471 getnameinfo NEW: IPv6
1472 getnetname NEW: Secure RPC
1473 getpmsg NEW: STREAMS
1474 getpt NEW: Unix98 PTY
1475 getrlimit64 NEW: LFS
1476 getutxent NEW: Unix98
1477 getutxid NEW: Unix98
1478 getutxline NEW: Unix98
1479 glob64 NEW: GNU ext.
1480 globfree64 NEW: GNU ext.
1481 gnu_get_libc_release NEW: GNU ext.
1482 gnu_get_libc_version NEW: GNU ext.
1483 grantpt NEW: Unix98 PTY
1484 host2netname NEW: Secure RPC
1486 iconv_close NEW: iconv
1487 iconv_open NEW: iconv
1488 if_freenameindex NEW: IPv6
1489 if_indextoname NEW: IPv6
1490 if_nameindex NEW: IPv6
1491 if_nametoindex NEW: IPv6
1492 in6addr_any NEW: IPv6
1493 in6addr_loopback NEW: IPv6
1494 inet6_isipv4mapped NEW: IPv6
1495 isastream NEW: STREAMS
1496 iswblank NEW: GNU ext.
1497 key_decryptsession NEW: Secure RPC
1498 key_decryptsession_pk NEW: Secure RPC
1499 key_encryptsession NEW: Secure RPC
1500 key_encryptsession_pk NEW: Secure RPC
1501 key_gendes NEW: Secure RPC
1502 key_get_conv NEW: Secure RPC
1503 key_secretkey_is_set NEW: Secure RPC
1504 key_setnet NEW: Secure RPC
1505 key_setsecret NEW: Secure RPC
1506 llrint NEW: ISO C 9x
1507 llrintf NEW: ISO C 9x
1508 llrintl NEW: ISO C 9x
1509 llround NEW: ISO C 9x
1510 llroundf NEW: ISO C 9x
1511 llroundl NEW: ISO C 9x
1516 lrintf NEW: ISO C 9x
1517 lrintl NEW: ISO C 9x
1518 lround NEW: ISO C 9x
1519 lroundf NEW: ISO C 9x
1520 lroundl NEW: ISO C 9x
1522 makecontext NEW: Unix98
1523 mempcpy NEW: GNU ext.
1526 modify_ldt NEW: kernel
1530 nearbyint NEW: ISO C 9x
1531 nearbyintf NEW: ISO C 9x
1532 nearbyintl NEW: ISO C 9x
1533 netname2host NEW: Secure RPC
1534 netname2user NEW: Secure RPC
1535 nexttoward NEW: ISO C 9x
1536 nexttowardf NEW: ISO C 9x
1537 nexttowardl NEW: ISO C 9x
1541 passwd2des NEW: Secure RPC
1543 pow10f NEW: GNU ext.
1544 pow10l NEW: GNU ext.
1547 printf_size NEW: GNU ext.
1548 printf_size_info NEW: GNU ext.
1549 profil_counter REMOVED
1550 pthread_mutexattr_getkind_np REPLACED
1551 pthread_mutexattr_setkind_np REPLACED
1552 ptsname NEW: Unix98 PTY
1553 ptsname_r NEW: Unix98 PTY
1555 putchar_locked REMOVED
1556 putgrent NEW: GNU ext.
1558 putpmsg NEW: STREAMS
1559 pututxline NEW: Unix98
1563 readdir64_r NEW: LFS
1564 remquo NEW: ISO C 9x
1565 remquof NEW: ISO C 9x
1566 remquol NEW: ISO C 9x
1568 roundf NEW: ISO C 9x
1569 roundl NEW: ISO C 9x
1571 scalbln NEW: ISO C 9x
1572 scalblnf NEW: ISO C 9x
1573 scalblnl NEW: ISO C 9x
1575 sendfile NEW: kernel
1576 setcontext NEW: Unix98
1577 setrlimit64 NEW: LFS
1578 setutxent NEW: Unix98
1580 sigignore NEW: Unix98
1581 sigqueue NEW: POSIX.1b
1582 sigrelse NEW: Unix98
1583 sigset NEW: POSIX.1b
1584 sigtimedwait NEW: POSIX.1b
1585 sigwaitinfo NEW: POSIX.1b
1586 sincos NEW: GNU ext.
1587 sincosf NEW: GNU ext.
1588 sincosl NEW: GNU ext.
1592 strcasestr NEW: GNU ext.
1593 strtoimax NEW: ISO C 9x
1594 strtoumax NEW: ISO C 9x
1595 strverscmp NEW: GNU ext.
1596 svcauthdes_stats NEW: Secure RPC
1597 svcunix_create NEW: sunrpc etx
1598 svcunixfd_create NEW: sunrpc ext
1599 swapcontext NEW: Unix98
1600 tcgetsid NEW: Unix98 PTY
1601 tdestroy NEW: GNU ext.
1602 tgamma NEW: ISO C 9x
1603 tgammaf NEW: ISO C 9x
1604 tgammal NEW: ISO C 9x
1608 truncf NEW: ISO C 9x
1609 truncl NEW: ISO C 9x
1611 unlockpt NEW: Unix98 PTY
1612 updwtmpx NEW: Unix98
1613 user2netname NEW: Secure RPC
1614 utmpxname NEW: Unix98
1615 versionsort NEW: GNU ext.
1616 versionsort64 NEW: GNU ext.
1618 wcscasecmp NEW: GNU ext.
1619 wcsncasecmp NEW: GNU ext.
1620 wcsnlen NEW: GNU ext.
1621 wcstoimax NEW: ISO C 9x
1622 wcstoll NEW: ISO C 9x
1623 wcstoull NEW: ISO C 9x
1624 wcstoumax NEW: ISO C 9x
1626 wordexp NEW: POSIX.2
1627 wordfree NEW: POSIX.2
1628 write_profiling REMOVED
1629 xdecrypt NEW: Secure RPC
1630 xdr_authdes_cred NEW: Secure RPC
1631 xdr_authdes_verf NEW: Secure RPC
1632 xdr_cryptkeyarg NEW: Secure RPC
1633 xdr_cryptkeyarg2 NEW: Secure RPC
1634 xdr_cryptkeyres NEW: Secure RPC
1635 xdr_getcredres NEW: Secure RPC
1636 xdr_key_netstarg NEW: Secure RPC
1637 xdr_key_netstres NEW: Secure RPC
1638 xdr_keybuf NEW: Secure RPC
1639 xdr_keystatus NEW: Secure RPC
1640 xdr_netnamestr NEW: Secure RPC
1641 xdr_sizeof NEW: Secure RPC
1642 xdr_unixcred NEW: sunrpc ext
1643 xencrypt NEW: Secure RPC
1644 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1655 * inet_ntoa is thread-safe
1657 * updwtmp is moved from libutil to libc
1659 * rewrite of cbrt function
1661 * update of timezone data
1675 * add atoll function
1677 * fix complex problems in Berkeley DB code
1679 * fix math functions
1683 * fixed lots of header problems (especially Linux/GNU specific)
1685 * dynamic loader preserves all registers
1687 * Roland McGrath provided support for handling of auxiliary objects in
1688 the ELF dynamic loader.
1690 * support for parallel builds is improved
1694 * GNU extensions are no longer declared by default. To enable them you
1695 must define the macro `_GNU_SOURCE' in your program or compile with
1698 * The library has changed from using GNU ld symbol aliases to using weak
1699 symbols where available. The ELF object file format supports weak
1700 symbols; GNU ld also supports weak symbols in the a.out format. (There
1701 is also now support for other GNU ld extensions in ELF. Use the
1702 `--with-elf' option to configure to indicate you have ELF, and
1703 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1704 of many files which contained only symbol aliases, reducing the size of
1705 the source and the compiled library; many other files were renamed to
1706 less cryptic names previously occupied by the symbol alias files.
1707 There is a new header file <elf.h> for programs which operate on
1708 files in the ELF format.
1710 * Converted to Autoconf version 2, so `configure' has more options.
1711 Run `configure --help' to see the details.
1713 * The library can now be configured to build profiling, highly-optimized
1714 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1715 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1716 `configure' enable building these extra libraries. The shared library is
1717 built by default when using both ELF and GNU ld. When shared libraries
1718 are enabled, the new library `-ldl' is available for arbitrary run-time
1719 loading of shared objects; its interface is defined in <dlfcn.h>. The
1720 new header file <link.h> gives access to the internals of the run-time
1721 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1722 application of same name on other systems and it provides information
1723 about dynamically linked binaries.
1725 * The C library now provides the run-time support code for profiling
1726 executables compiled with `-pg'. Programs can control the profiling code
1727 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1728 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1729 the support for this file format was contributed by David Mosberger-Tang.
1731 * The math code has been replaced with a math library based on fdlibm from
1732 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1733 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1734 functions. The math functions now reside in a separate library, so
1735 programs using them will need to use `-lm' their linking commands.
1737 * John C. Bowman contributed optimized ix87 assembler inline functions.
1739 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1740 mechanism similar to that found in Solaris 2. This is now used for the
1741 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1742 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1743 file controls what services are used for each individual database. This
1744 works by loading shared libraries with names specified in `nsswitch.conf',
1745 so service modules can be changed or added at any time without even
1746 relinking any program. Currently there are the file, db, and NIS based
1747 NSS services available.
1749 * The new functions `strtoq' and `strtouq' parse integer values from
1750 strings, like `strtol' and `strtoul', but they return `long long int' and
1751 `unsigned long long int' values, respectively (64-bit quantities).
1753 * The new functions `strtof' and `strtold' parse floating-point values from
1754 strings, like `strtod', but they return `float' and `long double' values,
1755 respectively (on some machines `double' and `long double' are the same).
1757 * Ulrich Drepper has contributed new implementations of the floating-point
1758 printing and reading code used in the `printf' family of functions and
1759 `strtod', `strtof', and `strtold'. These new functions are perfectly
1760 accurate, and much faster than the old ones.
1762 * The implementation of the POSIX locale model was completely rewritten by
1763 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1764 to compile the POSIX locale definition.
1766 * The former dummy implementations of the strcoll and strxfrm function are
1767 now replaced by fully functional code contributed by Ulrich Drepper. The
1768 collation information comes from the POSIX locale definitions.
1770 * The new header <langinfo.h> defines an interface for accessing
1771 various locale-dependent data (using the locale chosen with `setlocale').
1773 * Ulrich Drepper has contributed a new suite of functions for operation on
1774 wide-character and multibyte-character strings, in <wchar.h>;
1775 and classification and case conversion of wide characters, in <wctype.h>.
1776 These new functions are conforming to the ISO C, Amendement 1 specification.
1778 * There is now a second implementation of the standard I/O library available.
1779 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1780 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1782 * You can now use positional parameter specifications in format strings
1783 for the `printf' and `scanf' families of functions. For example,
1784 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1785 ``Number 6, Mr Jones''. This is mainly useful when providing different
1786 format strings for different languages, whose grammars may dictate
1787 different orderings of the values being printed. To support this
1788 feature, the interface for `register_printf_handler' has changed; see
1789 the header file <printf.h> for details.
1791 * The `printf' and `scanf' families of functions now understand a new
1792 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1793 to group numbers as indicated by the locale; for `scanf' and friends, this
1794 says to accept as valid only a number with all the proper grouping
1795 separators in the right places. In the default "C" locale, numbers are
1796 not grouped; but locales for specific countries will define the usual
1797 conventions (i.e. separate thousands with `,' in the US locale).
1799 * The pgrp functions have been regularized, slightly incompatibly but much
1800 less confusingly. The core functions are now `getpgid' and `setpgid',
1801 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1802 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1803 provided for compatibility. There is no longer an incompatible `getpgrp'
1804 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1806 * The new header file <fts.h> and suite of functions simplify programs that
1807 operate on directory trees. This code comes from 4.4 BSD.
1809 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1810 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1811 NSS scheme used in glibc.
1813 * There is a new malloc debugging hook `__memalign_hook'.
1815 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1816 `unsigned int' in <sys/types.h>. These are for compatibility only and
1817 their use is discouraged.
1819 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1820 done differently, so that it works even without GNU ld.
1822 * New function `euidaccess' checks allowed access to a file like `access',
1823 but using the effective IDs instead of the real IDs.
1825 * The time zone data files have been updated for the latest and greatest
1826 local time conventions of the countries of the world.
1828 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1831 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1832 for formatting floating-point numbers. They are provided only for
1833 compatibility; new programs should use `sprintf' instead. There are
1834 also equivalent function for the `long double' floating-point type and
1835 all functions also exist in a reentrant form.
1837 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1838 functions for maintaining the login-record files (primarily of use to
1839 system programs such as `login'), and convenient functions for
1840 allocating and initializing a pseudo-terminal (pty) device.
1842 * Ulrich Drepper has contributed new support for System V style
1843 shared memory and IPC on systems that support it.
1845 * Ulrich Drepper has contributed several miscellaneous new functions found
1846 in System V: The `hsearch' family of functions provide an effective
1847 implementation of hash tables; `a64l' and `l64a' provide a very simple
1848 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1851 * Ulrich Drepper has contributed new reentrant counterparts for the
1852 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1854 * Ulrich Drepper has contributed new, highly-optimized versions of several
1855 string functions for the i486/Pentium family of processors.
1857 * Ulrich Drepper has updated the Linux-specific code, based largely
1858 on work done in Hongjiu Lu's version of GNU libc for Linux.
1859 The GNU library now supports Linux versions 2.0.10 and later,
1860 using the ELF object file format (i[3456]86-*-linux).
1862 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1864 * David Mosberger-Tang and Richard Henderson have ported the C library
1865 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1866 dynamic linking support for ELF/Alpha.
1868 * Richard Henderson contributed several Alpha optimized assembler function
1869 for arithmetic and string handling.
1871 * Ulrich Drepper has contributed a new set of message catalog functions to
1872 support multiple languages using the <libintl.h> interface, for use with
1873 his new package GNU gettext. Translation volunteers have contributed
1874 catalogs of the library's messages in Spanish, German, and Korean.
1876 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1877 program and the `catgets' function for reading the catalog files it
1878 creates. (The <libintl.h> interface is preferred; we include the
1879 <nl_types.h> interface using `catgets' only for source compatibility with
1880 programs already written to use it.)
1882 * New header file <values.h> gives SVID-compatible names for <limits.h>
1885 * Various new macros, declarations, and small header files for compatibility
1888 * New function `group_member' is a convenient way to check if a process has
1889 a given effective group ID.
1891 * When using GCC 2.7 and later, the socket functions are now declared in a
1892 special way so that passing an argument of type `struct sockaddr_in *',
1893 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1894 `struct sockaddr *' type, does not generate a type-clash warning.
1896 * New function `error' declared in header file <error.h> is a convenient
1897 function for printing error messages and optionally exiting; this is the
1898 canonical function used in GNU programs. The new functions `err', `warn',
1899 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1900 doing the same thing.
1902 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1903 POSIX.2 `glob' function to do ~ and {...} expansion.
1905 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1906 `clearenv' which is used in POSIX.9 is also available.
1908 * New function `getsid' returns session ID number on systems that support it.
1910 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1911 files <db.h> and <mpool.h> provide a rich set of functions for several
1912 types of simple databases stored in memory and in files, and <ndbm.h> is
1913 an old `ndbm'-compatible interface using the `db' functions. Link with
1914 `-ldb' to get these functions.
1916 * New macro `strdupa' copies a string like `strdup', but uses local stack
1917 space from `alloca' instead of dynamic heap space from `malloc'.
1919 * New function `strnlen' is like `strlen' but searches only a given maximum
1920 number of characters for the null terminator. `stpncpy', `strndup' and
1921 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1924 * New function `statfs' in header <sys/statfs.h>.
1926 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1927 provide convenient functions for operating on blocks of null-terminated
1930 * A new suite of functions in <utmp.h> handle all the details of reading
1931 and writing the utmp file.
1933 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1936 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1937 completely POSIX compliant and also implemented the extended functionality
1938 to handle alternate digit representation and alternate era date formats.
1940 * Ulrich Drepper provided an implementation of the `strptime' function
1941 defined in XPG4.2 which transforms a string into a `struct tm' value.
1943 * Paul Eggert provided the tzselect shell script as part of the timezone
1944 code. The shell script makes it easy to select the correct timezone
1947 * The implementation of the malloc family of functions is completely replaced
1948 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1949 The implementation uses the mmap function (if available) and it is
1950 optimized for the use in multi threaded programs.
1952 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1953 functions. This new functionality is usable by specifying a special
1954 salt string and it is compatible with implementation on *BSD systems.
1956 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1957 `getsubopt' to handle second level command line options, `bsd_signal'
1958 to access BSD style `signal' functionality, the obsolete `regexp' style
1961 * the `lchown' function is available on system which support this
1964 * The implementation of the shadow password handling function was contributed
1967 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1969 * POSIX.1g support was added. The <sys/select.h> header is available,
1970 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1971 implementation of `getaddrinfo'.
1975 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1977 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1978 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1980 * The new function `daemon' from 4.4 BSD is useful for server programs that
1981 want to put themselves in the background.
1983 * Joel Sherrill has contributed support for several standalone boards that
1984 run without an operating system.
1986 * `printf', `scanf' and friends now accept a `q' type modifier for long
1987 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1989 * All of the code taken from BSD (notably most of the math and networking
1990 routines) has been updated from the BSD 4.4-Lite release.
1992 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1994 * The new functions `getdomainname' and `setdomainname' fetch or change the
1995 YP/NIS domain name. These are system calls which exist on systems which
1998 * The time zone data files have been updated for the latest international
2001 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2002 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2006 * The C library now includes support for Sun RPC, from Sun's free
2007 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2008 are included. (There is still no support for YP.)
2010 * Tom Quinn has contributed a port of the C library to SGI machines running
2011 Irix 4 (mips-sgi-irix4).
2013 * The new `lockf' function is a simplified interface to the locking
2014 facilities of `fcntl', included for compatibility.
2016 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2018 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2020 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2023 * The error message printed by `assert' for a failed assertion now includes
2024 the name of the program (if using GNU ld) and the name of the calling
2025 function (with versions of GCC that support this).
2027 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2029 * The library now includes the <sys/mman.h> header file and memory
2030 management functions `mmap', `munmap', `mprotect', `msync', and
2031 `madvise', on systems that support those facilities.
2033 * The interface for `mcheck' has changed slightly: the function called to
2034 abort the program when an allocation inconsistency is detected now takes
2035 an argument that indicates the type of failure. The new function
2036 `mprobe' lets you request a consistency check for a particular block at
2037 any time (checks are normally done only when you call `free' or `realloc'
2040 * It is now possible to easily cross-compile the C library, building on one
2041 system a library to run on another machine and/or operating system. All
2042 you need to do is set the variable `HOST_CC' in `configparms' to the
2043 native compiler for programs to run on the machine you are building on (a
2044 few generator programs are used on Unix systems); set `CC' to the
2047 * The new function `fexecve' (only implemented on the GNU system) executes
2048 a program file given a file descriptor already open on the file.
2052 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2053 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2055 * You can set the variable `libprefix' in `configparms' to specify a prefix
2056 to be prepended to installed library files; this makes it easy to install
2057 the GNU C library to be linked as `-lgnuc' or whatever.
2059 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2060 copies a limited number of characters from a string, and returns the
2061 address of the last character written.
2063 * You no longer need to check for whether the installed `stddef.h' is
2064 compatible with the GNU C library. configure now checks for you.
2066 * You can now define a per-stream `fileno' function to convert the
2067 stream's cookie into an integral file descriptor.
2069 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2070 allocates zero bytes of storage, and returns a unique pointer which
2071 you can pass to `realloc' or `free'. The behavior is undefined if
2072 you dereference this pointer.
2074 * The C library now runs on Sony NEWS m68k machines running either
2075 NewsOS 3 or NewsOS 4.
2077 * The new `syscall' function is a system-dependent primitive function
2078 for invoking system calls. It has the canonical behavior on Unix
2079 systems, including unreliable return values for some calls (such as
2080 `pipe', `fork' and `getppid').
2082 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2083 to `EAGAIN', which is the preferred name. On systems whose kernels
2084 use two distinct codes, the C library now translates EWOULDBLOCK to
2085 EAGAIN in every system call function.
2089 * The GNU C Library Reference Manual is now distributed with the library.
2090 `make dvi' will produce a DVI file of the printed manual.
2091 `make info' will produce Info files that you can read on line using C-h i
2092 in Emacs or the `info' program.
2093 Please send comments on the manual to bug-glibc-manual@gnu.org.
2095 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2097 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2099 * Jason Merrill has contributed a port to the Sequent Symmetry running
2100 Dynix version 3 (i386-sequent-dynix).
2102 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2103 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2105 * New function `memory_warnings' lets you arrange to get warnings when
2106 malloc is running out of memory to allocate, like Emacs gives you.
2108 * The C library now contains the relocating allocator used in Emacs 19 for
2109 its editing buffers. This allocator (ralloc) minimizes allocation
2110 overhead and fragmentation by moving allocated regions around whenever it
2111 needs to. You always refer to a ralloc'd region with a "handle" (a
2112 pointer to a pointer--an object of type `void **').
2114 * There is a new `printf' format: `%m' gives you the string corresponding
2115 to the error code in `errno'.
2117 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2118 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2119 pass, the `a' modifier says to fill in a `char **' you pass with a
2122 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2123 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2124 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2126 * `mkstemp' is a traditional Unix function to atomically create and open a
2127 uniquely-named temporary file.
2131 * The standard location for the file that says what the local timezone is
2132 has changed again. It is now `/usr/local/etc/localtime' (or more
2133 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2135 * The distribution no longer contains any files with names longer than 14
2138 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2139 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2141 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2145 * The configuration process has changed quite a bit. The `configure'
2146 script is now used just like the configuration scripts for other GNU
2147 packages. The `sysdeps' directory hierarchy is much rearranged.
2148 The file `INSTALL' explains the new scheme in detail.
2150 * The header files no longer need to be processed into ANSI C and
2151 traditional C versions. There is just one set of files to install, and
2152 it will work with ANSI or old C compilers (including `gcc -traditional').
2154 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2155 MIPS DECStation running Ultrix 4.
2157 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2158 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2159 made itself into a shared library.
2161 * Yet further improved support for the i386, running 4.3 BSD-like systems
2162 (such as Mach 3 with the Unix single-server), or System V.
2164 * New function `strncasecmp' to do case-insensitive string comparison
2165 with limited length.
2167 * New function `strsep' is a reentrant alternative to `strtok'.
2169 * New functions `scandir' and `alphasort' for searching directories.
2171 * New function `setenv' is a better interface to `putenv'.
2173 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2174 function for traversing a directory tree.
2176 * The GNU obstack package is now also part of the C library.
2177 The new function `open_obstack_stream' creates a stdio stream that
2178 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2179 formatted output directly to an obstack.
2181 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2182 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2184 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2186 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2187 things to your strings.
2189 * There are some new test programs: test-fseek, testmb, and testrand.
2191 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2192 These ports are not finished, but are a good starting place for really
2193 supporting those systems.
2195 * `/etc/localtime' is now the standard location for the file that says what
2196 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2197 This follows the general principle that `/etc' is the place for all local
2198 configuration files.
2200 * The C library header files now use `extern "C"' when used by the C++
2201 compiler, so the C library should now work with C++ code.
2203 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2204 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2207 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2208 function which uses the `merge sort' algorithm, and is said to be
2209 significantly faster than the old GNU `qsort' function. Merge sort is
2210 now the standard `qsort' function. The new algorithm can require a lot
2211 of temporary storage; so, the old sorting function is called when the
2212 required storage is not available.
2214 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2215 provides the Unix `crypt' function, plus some other entry points.
2217 * The code and header files taken from 4.4 BSD have been updated with the
2218 latest files released from Berkeley.
2220 ----------------------------------------------------------------------
2221 Copyright information:
2223 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2225 Permission is granted to anyone to make or distribute verbatim copies
2226 of this document as received, in any medium, provided that the
2227 copyright notice and this permission notice are preserved,
2228 thus giving the recipient permission to redistribute in turn.
2230 Permission is granted to distribute modified versions
2231 of this document, or of portions of it,
2232 under the above conditions, provided also that they
2233 carry prominent notices stating who last changed them.
2236 version-control: never
projects / thirdparty / glibc.git / blob