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1 GNU C Library NEWS -- history of user-visible changes. 2012-1-27
2 Copyright (C) 1992-2009, 2010, 2011, 2012 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.16
10 * The following bugs are resolved with this release:
12 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
13 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
14 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
15 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
16 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
17 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
18 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
19 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
20 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
21 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
22 13576, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658, 13673,
23 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739, 13743,
24 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806, 13824,
25 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871, 13872,
26 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895, 13908,
27 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918, 13919,
28 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938, 13941,
29 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973, 13979,
30 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040, 14043,
31 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075, 14080,
32 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134, 14153,
33 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14278
35 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
36 configuring glibc with:
37 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
38 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
39 Implemented by H.J. Lu.
41 * ISO C11 support:
43 + define static_assert
45 + do not declare gets
47 + declare at_quick_exit and quick_exit also for ISO C11
49 + aligned_alloc. NB: The code is deliberately allows the size parameter
50 to not be a multiple of the alignment. This is a moronic requirement
51 in the standard but it is only a requirement on the caller, not the
52 implementation.
54 + timespec_get added
56 + uchar.h support added
58 + CMPLX, CMPLXF, CMPLXL added
60 Implemented by Ulrich Drepper.
62 * Support for the IA-64 has been moved to ports.
64 * Remove support for anything but ELF binary format
66 * Checking versions of poll, ppoll added.
67 Implemented by Ulrich Drepper.
69 * More generic and 64-bit performance optimizations to math functions.
70 Implemented by Ulrich Drepper.
72 * New configure option --enable-obsolete-rpc makes the deprecated RPC
73 headers and functions available at compile time as they were before
74 version 2.14. This option will be removed at some time in the future
75 after the TI-RPC library becomes fully sufficient for the needs of
76 existing applications.
78 * Compatibility code for Linux kernel versions before 2.4 has been removed.
79 Note that glibc is not expected to work with any Linux kernel version
80 before 2.6.
82 * New header <sys/auxv.h> and function getauxval allowing easy access to
83 the AT_* key-value pairs passed from the Linux kernel. The header also
84 defines the HWCAP_* bits associated with the AT_HWCAP key.
86 * New locales: mag_IN
88 * New configure option --enable-systemtap builds SystemTap static probes
89 into libc for setjmp and longjmp and into libpthread for various operations.
90 So far the setjmp/longjmp probes and some of the libpthread probes are
91 provided only for i*86 and x86_64.
92 Implemented by Roland McGrath and Rayson Ho.
94 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
96 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
97 and Will Schmidt.
99 * More optimized functions for SPARC. Implemented by David S. Miller.
101 * Improved support for cross-compilation, especially bootstrap builds
102 without a previously built glibc.
104 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
105 Chris Metcalf from Tilera.
107 * Support for the old ARM ABI has been removed from ports. Only the EABI is
108 now supported for ARM processors.
110 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
111 as the name of the dynamic linker, to distinguish it from the
112 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
114 * Support for CRIS has been removed from ports.
116 * A new class of installed header has been documented for low-level
117 platform-specific functionality. PowerPC added the first instance with a
118 function to provide time base register access. Contributed by Tulio
119 Magno Quites Machado Filho.
121 * ix86 configurations now install header files that are consistent with
122 what x86-64 configurations install. These same header files can be used
123 for -m32, -m64, or -mx32 builds.
124 Contributed by H.J. Lu.
125 \f
126 Version 2.15
128 * The following bugs are resolved with this release:
130 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
131 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
132 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
133 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
134 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
135 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
136 13484, 13506, 13515, 13523, 13524, 13538, 13540
138 * New program pldd to list loaded object of a process
139 Implemented by Ulrich Drepper.
141 * Add nss_db support back to glibc. No more dependency on Berkeley db
142 and support for initgroups lookups.
143 Implemented by Ulrich Drepper.
145 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
146 Contributed by HJ Lu.
148 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
149 Contributed by HJ Lu.
151 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
152 on x86-32 and x86-64.
153 Contributed by Liubov Dmitrieva.
155 * Optimized strchr and strrchr for SSE on x86-32.
156 Contributed by Liubov Dmitrieva.
158 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
159 for x86-64 and x86-32.
160 Contributed by Liubov Dmitrieva.
162 * New interfaces: scandirat, scandirat64
163 Implemented by Ulrich Drepper.
165 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
166 Implemented by Ulrich Drepper.
168 * nscd now also caches the netgroup database.
169 Implemented by Ulrich Drepper.
171 * Integrate libm with gcc's -ffinite-math-only option.
172 Implemented by Ulrich Drepper.
174 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
175 to math functions. Implemented by Ulrich Drepper.
177 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
178 Implemented by Ulrich Drepper.
180 * New Linux interfaces: process_vm_readv, process_vm_writev
182 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
183 Implemented by Ulrich Drepper.
185 * Optimized nearbyint and strcasecmp for PPC.
186 Implemented by Adhemerval Zanella.
188 * New locales: bho_IN, unm_US, es_CU, ta_LK
189 \f
190 Version 2.14
192 * The following bugs are resolved with this release:
194 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
195 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
196 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
197 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
198 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
199 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
200 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
201 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
202 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
203 12795, 12811, 12813, 12814, 12841
205 * The RPC implementation in libc is obsoleted. Old programs keep working
206 but new programs cannot be linked with the routines in libc anymore.
207 Programs in need of RPC functionality must be linked against TI-RPC.
208 The TI-RPC implementation is IPv6 enabled and there are other benefits.
210 Visible changes of this change include (obviously) the inability to link
211 programs using RPC functions without referencing the TI-RPC library and the
212 removal of the RPC headers from the glibc headers.
213 Implemented by Ulrich Drepper.
215 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
216 syncfs, setns, sendmmsg
218 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
219 yue_HK, lij_IT, mhr_RU
221 * New encodings: CP770, CP771, CP772, CP773, CP774
223 * New program sotruss to trace calls through PLTs
224 Implemented by Ulrich Drepper.
226 * The malloc hook implementation is marked deprecated and will be removed
227 from the default implementation in the next version. The design never
228 worked ever since the introduction of threads. Even programs which do
229 not create threads themselves can use multiple threads created internally.
230 \f
231 Version 2.13
233 * The following bugs are resolved with this release:
235 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
236 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
237 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
238 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
239 12378, 12394, 12397
241 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
243 * POWER7 optimizations: memset, memcmp, strncmp
245 * New optimized string functions for x86-64: strnlen (SSE2),
246 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
247 Implemented by Ulrich Drepper.
248 \f
249 Version 2.12
251 * The following bugs are resolved with this release:
253 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
254 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
255 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
256 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
257 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
258 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
259 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
260 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
262 * New interfaces: pthread_getname_np, pthread_setname_np
264 * New Linux interface: recvmmsg
266 * STT_GNU_IFUNC implemented for Sparc by David Miller.
268 * The dynamic linker now recognizes supported ABI versions from the
269 EI_ABIVERSION field in the ELF header.
270 Implemented by Ulrich Drepper.
272 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
273 will not be used to fill in password fields in the passwd.byname replies.
274 Instead it is used to synthesize the shadow.byname table, should it be
275 missing. This is a useful mode in some installations involving Solaris.
276 Implemented by Ulrich Drepper.
278 * New locales: kok_IN, sq_MK, cv_RU
279 \f
280 Version 2.11
282 * The following bugs are resolved with this release:
284 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
285 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
286 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
287 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
288 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
289 10789, 10817, 10823, 10840, 10847
291 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
292 mkostemps64
293 Implemented by Ulrich Drepper.
295 * Checking version of longjmp added that fails if an uninitialized stack
296 frame would be created. Implemented by Ulrich Drepper.
298 * STT_GNU_IFUNC is now supported in static executables.
299 Implemented by H.J. Lu.
301 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
303 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
304 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
305 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
306 Contributed by H.J. Lu.
308 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
309 Implemented by Ulrich Drepper.
311 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
312 strstr, strcasestr.
313 Contributed by H.J. Lu.
315 * Support for fma instruction in AVX on x86-64.
316 Implemented by H.J. Lu and Ulrich Drepper.
318 * AVX support in x86-64 auditing support in ld.so.
319 Implemented by H.J. Lu.
321 * STB_GNU_UNIQUE support added.
322 Implemented by Ulrich Drepper.
324 * Implement second fallback mode for optimized DNS lookup for even more
325 broken environments. If two requests from the same port are not
326 handled correctly close the socket and open a new one before sending
327 the second request. The 'single-request-reopen' option in /etc/resolv.conf
328 can be used to select this mode right away, instead of rediscovering the
329 necessity is every process again.
330 Implemented by Ulrich Drepper.
332 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
333 Implemented by Adam Tkac.
335 * Optimized iconv conversions for S390x.
336 Implemented by Andreas Krebbel.
338 * Using condvars with PI mutexes is now more efficient due to kernel
339 support for requeueing to PI futexes. NPTL support added for x86-64.
340 Implemented by Ulrich Drepper.
342 * New locales: ps_AF, my_MM
343 \f
344 Version 2.10
346 * The following bugs are resolved with this release:
348 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
349 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
350 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
351 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
352 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
354 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
355 Implemented by Ulrich Drepper.
357 * New Linux interfaces: accept4, fallocate, fallocate64.
358 Implemented by Ulrich Drepper.
360 * Correct declarations of string function when used in C++ code. This
361 could lead to compile errors for invalid C++ code.
363 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
364 now in POSIX.
366 * New POSIX 2008 interface: psiginfo
367 Implemented by Ulrich Drepper.
369 * New ISO C++1x interfaces: quick_exit, at_quick_exit
370 Implemented by Ulrich Drepper.
372 * Support for selecting between multiple function definitions at runtime
373 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
375 * The libcrypt library can now use the hash function implementations in
376 NSS. Implemented by Ulrich Drepper.
378 * The malloc implementation can be compiled to be less memory efficient
379 but higher performing in multi-threaded programs.
380 Implemented by Ulrich Drepper.
382 * New locales: nan_TW@latin, ks_IN
384 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
385 Implemented by Ulrich Drepper.
387 * Extended printf hook support. It is possible to use user-defined types
388 and extend existing format specifiers.
389 Implemented by Ulrich Drepper.
391 * Handling for group shadow files has been added.
392 Implemented by Ulrich Drepper.
394 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
395 servers (the case, e.g., for some people using the built-in DNS
396 server in ADSL modems/routers). There is a once-per-process timeout
397 in case of a broken server. To avoid it, users can run nscd or put
398 'options single-request' in /etc/resolv.conf.
399 Implemented by Ulrich Drepper.
400 \f
401 Version 2.9
403 * The following bugs are resolved with this release:
405 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
406 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
407 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
408 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
409 6968, 6974, 6980, 6995, 7008, 7009, 7029
411 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
412 up at the same time. Implemented by Ulrich Drepper.
414 * TLS descriptors for LD and GD on x86 and x86-64.
415 Implemented by Alexandre Oliva.
417 * getaddrinfo now handles DCCP and UDPlite.
418 Implemented by Ulrich Drepper.
420 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
421 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
422 Implemented by Ulrich Drepper.
424 * New implementation of memmem, strstr, and strcasestr which is O(n).
425 Implemented by Eric Blake.
427 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
429 * Implement "e" option for popen to open file descriptor with the
430 close-on-exec flag set. Implemented by Ulrich Drepper.
432 * Implement "b" mode for fmemopen. In this mode writes writes don't
433 implicitly add a NUL byte and seeks from the end of the buffer really
434 use the buffer end, not the string length as the basis.
435 Implemented by Ulrich Drepper.
437 * Many functions, exported and internal, now atomically set the close-on-exec
438 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
440 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
441 Sinhala)
442 Implemented by Pravin Satpute.
444 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
445 \f
446 Version 2.8
448 * The following bugs are resolved with this release:
450 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
451 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
452 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
453 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
454 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
455 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
456 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
458 * New locales: bo_CN, bo_IN, shs_CA.
460 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
462 * Sorting rules for some Indian languages (Devanagari and Gujarati).
463 Implemented by Pravin Satpute.
465 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
467 * nscd caches now all timeouts for DNS entries
468 Implemented by Ulrich Drepper.
470 * nscd is more efficient and wakes up less often.
471 Implemented by Ulrich Drepper.
473 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
474 vdprintf, and obstack_vprintf.
475 Implemented by Jakub Jelinek.
477 * Faster memset for x86-64.
478 Implemented by Harsha Jagasia and H.J. Lu.
480 * Faster memcpy on x86.
481 Implemented by Ulrich Drepper.
483 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
484 Implemented by Ulrich Drepper.
486 * Faster sqrt and sqrtf implemention for some PPC variants.
487 Implemented by Steven Munroe.
488 \f
489 Version 2.7
491 * The following bugs are resolved with this release:
493 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
494 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
495 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
496 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
497 5071, 5103, 5104, 5112, 5113, 5184, 5186
499 * More checking functions: fread, fread_unlocked, open*, mq_open.
500 Implemented by Jakub Jelinek and Ulrich Drepper.
502 * Extend fortification to C++. Implemented by Jakub Jelinek.
504 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
505 by not recognizing 'a' as a modifier when those specs are requested.
506 Implemented by Jakub Jelinek.
508 * PPC optimizations to math and string functions.
509 Implemented by Steven Munroe.
511 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
512 options to be passed. Implemented by Ulrich Drepper.
514 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
516 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
517 Implemented by Ulrich Drepper.
519 * Handle private futexes in the NPTL implementation.
520 Implemented by Jakub Jelinek and Ulrich Drepper.
522 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
523 Implemented by Roland McGrath and Ulrich Drepper.
525 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
527 * SHA-256 and SHA-512 based password encryption.
528 Implemented by Ulrich Drepper.
530 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
531 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
532 yo_NG.
534 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
535 Implemented by Ulrich Drepper.
536 \f
537 Version 2.6
539 * The following bugs are resolved with this release:
541 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
542 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
543 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
544 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
545 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
546 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
547 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
548 4702, 4858
550 * New Linux interfaces: epoll_pwait, sched_getcpu.
552 * New generic interfaces: strerror_l.
554 * nscd can now cache the services database. Implemented by Ulrich Drepper.
555 \f
556 Version 2.5
558 * The following bugs are resolved with this release:
560 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
561 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
562 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
563 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
564 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
565 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
566 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
567 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
568 3225, 3251, 3252, 3253, 3273
570 * For Linux, the sorting of addresses returned by getaddrinfo now also
571 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
572 Implemented by Ulrich Drepper.
574 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
575 Implemented by Ulrich Drepper.
577 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
579 * New iconv module for MIK. Contributed by Alexander Shopov.
581 * For sites with broken group and/or passwd database, the auto-propagate
582 option of nscd can prevent creating ID lookup entries from the results
583 of a name lookup and vice versa. This usually is no problem but some
584 site might have problems with the default behavior.
585 Implemented by Ulrich Drepper.
587 * Iterating over entire database in NIS can be slow. With the
588 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
589 to trade time for memory. The entire database will be read at once.
590 Implemented by Ulrich Drepper.
592 * The interfaces introduced in RFC 3542 have been implemented by
593 Ulrich Drepper.
595 * Support for the new ELF hash table format was added by Ulrich Drepper.
597 * Support for priority inheritance mutexes added by Jakub Jelinek and
598 Ulrich Drepper.
600 * Support for priority protected mutexes added by Jakub Jelinek.
602 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
603 or_IN, csb_PL, fy_NL, sr_ME.
604 \f
605 Version 2.4
607 * More overflow detection functions.
609 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
610 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
612 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
613 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
614 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
615 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
616 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
617 by Masahide Washizawa.
619 * It is now possible to install audit libraries for the dynamic linker using
620 LD_AUDIT. Implemented by Ulrich Drepper.
622 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
623 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
624 For a libc and libpthread that works well on Linux 2.4 kernels, we
625 recommend using the stable 2.3 branch.
627 * The new function open_wmemstream acts like open_memstream,
628 but uses a wchar_t wide character buffer.
630 * The new function ppoll is an improved version of poll, similar to pselect.
632 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
633 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
634 renameat, unlinkat, linkat, symlinkat, readlinkat.
636 * New Linux kernel system calls: unshare,
637 inotify_init, inotify_add_watch, inotify_rm_watch.
639 * The euidaccess function is now also known by the alias eaccess,
640 for compatibility with some other systems.
642 * Timezone data updated to 2006b version.
643 \f
644 Version 2.3.6
646 * The following bugs are resolved with this release:
648 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
649 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
650 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
651 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
652 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
653 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
655 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
657 * As of this release, GCC 4 can be used to compile the C Library.
659 * Timezone data updated to 2005m version.
660 \f
661 Version 2.3.5
663 * The following bugs are resolved with this release:
665 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
666 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
667 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
668 777, 787, 821, 822, 823, 825
670 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
671 \f
672 Version 2.3.4
674 * Support for RFC 3678. Real implementations exist only for Linux so far.
675 Implemented by Ulrich Drepper.
677 * nscd can now cache entries persistently. Expiring entries are reloaded.
678 For speedups the cache can be shared in memory with client processes.
679 Implemented by Ulrich Drepper.
681 * nscd can now perform SELinux checks.
682 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
684 * getaddrinfo queries are now cached. Canonical name lookup is performed
685 efficiently.
686 Implemented by Ulrich Drepper.
688 * The nothrow function attribute is used when headers are used by gcc when
689 compiling C code. This can avoid significant amounts of exception
690 handling data.
692 * The malloc functions perform more error checking and are stricter when
693 it comes to reacting on errors. The default action is to terminate
694 the process after showing an error message. Implemented by Ulrich Drepper.
696 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
697 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
699 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
700 namespaces using the new function dlmopen(). This feature is of course,
701 like most other dynamic loading functionality, not available in statically
702 linked applications. Implemented by Ulrich Drepper.
704 * Low-overhead boundary checking variants of string and some stdio functions
705 were added. These are to be used in conjunction with a gcc patch by
706 Jakub Jelinek which adds calls to these functions if possible.
707 Implemented by Jakub Jelinek and Ulrich Drepper.
709 * Old code for several operating systems and machine architectures that
710 have not been in working condition in a long time have been removed from
711 the main source tree maintained by the GNU C Library's maintainers.
712 These files are now reside in the separate `ports' source module
713 that is usable as an add-on when building the library.
714 \f
715 Version 2.3.3
717 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
718 interrogate the dynamic linker, compatible with the Solaris interface.
720 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
721 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
723 * getifaddrs now uses the netlink interface on Linux to get its information.
724 Implemented by Thorsten Kukuk.
726 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
727 Implemented by Ulrich Drepper.
729 * support for non-executable stacks on x86 has been added. Changes mostly
730 by Roland McGrath.
732 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
733 and Ulrich Drepper.
735 * getaddrinfo now performs destination address selection according to
736 RFC 3484.
737 \f
738 Version 2.3.2
740 * Thread-safe interfaces for many functions that access locale data
741 were added in version 2.3, but these features were omitted from NEWS.
742 Many functions have variants with an `_l' suffix that take a `locale_t'
743 object as a parameter rather than consulting the current locale.
744 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
745 create and maintain `locale_t' objects. Additionally, the new function
746 `uselocale' sets "the current locale" (as used by functions not so
747 parameterized) set for an individual thread. These features were added
748 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
750 * The functions getresuid, getresgid, setresuid, and setresgid, which
751 have long been available on Linux, are now declared in <unistd.h>
752 and are now also available on the Hurd.
754 * ELF thread-local storage support (TLS) now works on x86-64.
756 * The new dynamic string token $LIB is expanded in shared library names.
757 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
759 * Aldy Hernandez contributed complete software floating point support for
760 PowerPC machines with no FPU.
762 * fexecve is implemented on Linux.
764 * The `btowc' function should work at least twice as fast due to
765 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
767 * With approriate thread add-ons cancelable functions are now implemented
768 in libc.so as well. No need to call the function in libpthread. This
769 change allowed to finally disable the incorrect and expensive handling
770 of weak definition in ld.so.
772 * Yet more PLT entries in libc.so have been removed. We finally arrived
773 at the bare minimum. Startup times improved appropriately.
775 * Support for the new Linux/x86 system call interface was added. The
776 AT_SYSINFO auxiliary vector entry is recognized and handled.
777 \f
778 Version 2.3
780 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
781 charsets.
783 * iconv (the program and the interface) now accepts empty names (excluding
784 options like //TRANSLIT) to mean "use charset of current locale".
786 * localedef can now transliterate characters in strings which are not in
787 the provided charmap. The information from the input locale is used.
789 * Prelinking support was added for ELF targets. This requires additional
790 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
792 * Read-only stdio streams now use mmap to speed up operation by eliminating
793 copying and buffer underflows. To use add 'm' to the mode string of
794 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
796 * The malloc functions were completely rewritten by Wolfram Gloger based
797 on Doug Lea's malloc-2.7.0.c.
799 * Isamu Hasegawa contributed a completely new and POSIX-conformant
800 implementation of regex.
802 * Bruno Haible upgraded the iconv and locale implementation to support
803 Unicode 3.2.
805 * Contents of the LC_* and LANG environment variables in the CEN style are
806 not recognized anymore. It never was used. Change by Ulrich Drepper.
808 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
809 thread-local storage (TLS) ABI on some platforms.
810 Changes by Ulrich Drepper. SH support by Kaz Kojima.
812 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
813 EUC-JISX0213, and TSCII.
815 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
816 BSD-compatible interface for getting all network interface addresses.
817 Implementation for IPv4 by Roland McGrath.
819 * Loading of locale data is faster due to the introduction of a locale
820 archive. Implemented by Roland McGrath and Ulrich Drepper.
822 * Startup times are significantly reduced by not using exported functions
823 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
824 and Ulrich Drepper.
826 * Steven Munroe contributed a port to PowerPC64/Linux.
827 \f
828 Version 2.2.6
830 * The Hurd now uses the GNU libio implementation of stdio rather than the
831 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
833 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
834 with the same behavior as the Linux system call of the same name.
835 \f
836 Version 2.2.5
838 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
839 128-bit long double format.
841 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
842 IBM1161, and IBM1162 charsets.
844 * Andreas Jaeger contributed a port to x86-64/Linux.
846 * Peter Bruin contributed a port to PowerPC/Hurd.
848 * libc functions using I/O streams now can handle wide-oriented streams
849 as well.
851 * optimizations in the dynamic linker. Binaries created by recent binutils
852 versions start up quicker due to reduced time spent on relocations.
854 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
855 \f
856 Version 2.2.4
858 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
859 asinh, atanh, j0 for the 128-bit long double format.
861 * Bruno Haible updated all the code handling Unicode in some form to
862 support Unicode 3.1.
864 * Speed of regex for single-byte locales is back to previous levels.
865 Patch by Isamu Hasegawa.
867 * Alpha, SPARC, and IA-64 now also using floating stacks.
869 * Startup time of internationalized applications greatly improved through
870 iconv cache. Use iconvconfig to generate the cache file.
871 Contributed by Ulrich Drepper.
873 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
874 severe performance problems. Patch by David Mosberger.
876 * The Hurd port got a lot more functionality like AIO, various stdio
877 extensions, etc. Mainly done by Roland McGrath.
879 * mtrace can now lookup symbols in shared libraries.
880 \f
881 Version 2.2.3
883 * Intel's IA-64 math library is largely integrated. It provides fast and
884 accurate implementatations for most basic and standard math functions
885 in float, double, and long double format.
887 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
888 and asin for the 96-bit long double format and asin, log, tan for the
889 128-bit long double format.
891 * The beginning of a last-bit accurate math library by IBM Haifa were added.
892 The basic double functions exist today. Contributed by Abraham Ziv
893 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
894 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
896 * An asynchronous name lookup library was added. The interface is designed
897 after POSIX AIO. The proposal was circulated beforehand to get comments.
898 No negative ones came in. Implemented by Ulrich Drepper.
900 * Port to S390/64bit contributed by Martin Schwidefsky
901 <schwidefsky@de.ibm.com>.
903 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
904 of functions for Linux/IA-64.
906 * The RPC code is now thread safe. Threads can now use the same service
907 of different services at the same time. Patch by Eric Norum
908 <eric.norum@usask.ca> with some help by Ulrich Drepper.
910 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
911 family of functions for Linux/S390.
913 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
914 of functions for Linux/x86.
916 * Port to Linux/CRIS contributed by Axis Communications.
917 \f
918 Version 2.2.2
920 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
921 we can now check for namespace violations and missing declarations. The
922 result is that almost all headers are now Unix-compliant (as defined in
923 the upcoming XPG6). The negative side is that some programs might need
924 corrections, too, if they depend on the incorrect form of the headers in
925 previous versions which defined too many symbols and included too many
926 other headers.
928 * regex now handles multibyte character sets correctly.
929 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
931 * iconv (the program) does now conform to the upcoming XPG6 and handles
932 charmaps. Instead of the charset names the path of charmaps can be
933 provided and the conversion happens based on this data.
934 Contributed by Ulrich Drepper.
936 * The locale program now provides detailed information about the installed
937 locales. While
939 locale -a
941 only lists the names of the supported locales
943 locale -a --verbose
945 provides details such as country, language, and codeset name.
946 Contributed by Ulrich Drepper.
947 \f
948 Version 2.2.1
950 * The gencat program now parses the input file according to the charset
951 selected by the LC_CTYPE category. This is important for stateful
952 character sets. To make generating catalogs easier there is a way
953 to overwrite the charset selected by the locale: before the first
954 message or $ quote line the catalog can contain a line like
956 $ codeset=ISO-8859-2
958 to select the charset (ISO-8859-2 in this case).
960 Implemented by Shinya Hanataka and Ulrich Drepper.
962 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
963 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
964 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
966 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
967 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
969 * The LANGUAGE environment variable is now ignored unless the locale is
970 changed from the default "C" locale.
972 * The usual bug fixes.
973 \f
974 Version 2.2
976 * Greg McGary added runtime support for bounds checking using gcc's
977 new -fbounded-pointers option. ix86 target is complete. PowerPC
978 is in progress.
980 * Thorsten Kukuk added secure mode support to nscd.
982 * The Berkeley db libraries have been removed.
984 Related, the nss_db module is now in a separate package since it
985 obviously requires a database library being available.
987 * Wide character I/O streams implemented by Ulrich Drepper.
989 * Functions from the extended socket API added by Ulrich Drepper.
991 * Functions feenableexcept and fedisableexcept to control the
992 behaviour of individual exceptions have been added by Andreas Jaeger.
994 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
996 * The resolver code has been updated from bind 8.2.3-T5B which supports
997 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
998 and Mark Kettenis.
1000 This change could in some situations effect backward compatibility. Since
1001 now `_res' is a thread-local instead of a global variable, modifying it
1002 in one thread does not have any effect in other threads.
1004 The resolver library was also extended to allow IPv6 as the transport
1005 protocol for the requests. This work was done by Stig Venaas.
1007 * Compatibility code for K&R C compilers has been removed from the
1008 header files. A ISO C compiler is needed to use the library
1009 (conforming to either C89 or C99 standard).
1011 * Complete rewrite of the localedef program to support multibyte character
1012 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1013 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1014 Implemented by Ulrich Drepper.
1016 Bruno Haible significantly improved the generation and use of the data
1017 structures for the wide character tables.
1019 * Plural handling in gettext implemented by Ulrich Drepper.
1021 * The utmp daemon has been removed.
1023 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1025 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1026 and Yutaka Niibe.
1028 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1030 * POSIX barriers implemented by Kaz Kylheku.
1032 * POSIX spawn function family implemented by Ulrich Drepper.
1034 * POSIX spinlocks are now available.
1036 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1038 * the configure option --enable-kernel=X.Y.Z allows to strip out
1039 compatibility for kernel versions before X.Y.Z. This is currently only
1040 implemented for Linux.
1042 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1043 field sin6_scope_id. This means that all programs using IPv6 should be
1044 recompiled. Don't expect binary compatibility with previous glibc
1045 versions.
1047 * various conversion modules for IBM character sets contributed by
1048 Masahide Washizawa.
1050 * IA-64 port by Jes Sorensen and HJ Lu.
1051 \f
1052 Version 2.1.3
1054 * bug fixes
1056 \f
1057 Version 2.1.2
1059 * bug fixes
1061 \f
1062 Version 2.1.1
1064 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1066 * New xdr functions are added; some rpc functions are now 64bit clean.
1068 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1070 * Fixed known incompatibilities with glibc 2.0.
1072 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1074 * Optimized a number of functions (especially the ELF dynamic loader).
1076 * Update timezone data files.
1078 * lots of charmaps corrections
1080 * some new locale definitions and charmaps
1082 \f
1083 Version 2.1
1085 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1086 conform to POSIX member type requirements. Symbol versions have been
1087 adjusted as needed within the library, and for direct use by applications,
1088 but there is potential for problems if third-party libraries use
1089 struct timeval as part of their interface. This does not present
1090 a problem for X and other "essential" system libraries.
1092 * An additional locale model to support C++ Standard Library locale
1093 model and probably more was implemented by Ulrich Drepper.
1095 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1096 symbol level.
1098 * Miles Bader provided the `argp' function family to support hierachical
1099 command line argument parsing, layered on top of getopt.
1101 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1103 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1104 numbers.
1106 * scanf recognizes the %a and %A format for scanning floating point numbers.
1108 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1109 information and interfaces for the available integer types.
1111 * about 130 new math functions were added to implement the ISO C9x math
1112 library.
1114 * the new header <complex.h> contains definitions of the complex math
1115 functions from ISO C 9X.
1117 * the new header <tgmath.h> defines generic macros to use complex or
1118 real valued functions.
1120 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1122 * Andreas Jaeger provided a test suite for the math library.
1124 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1126 * Ulrich Drepper added character set conversion functions (iconv).
1128 * Optimized string functions have been added.
1130 * The localedata addon is now part of glibc.
1132 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1134 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1135 daemon for NSS (nscd).
1137 Missing a better place here are some numbers on improvements. Under
1138 Linux 2.1.125 un-tar-ing the kernel sources takes
1140 user system wall
1142 using local files 12.19s 6.88s 22.91s
1144 using NIS 13.92s 8.91s 26.34s
1146 using NIS & nscd 10.37s 7.34s 25.30s
1148 using NIS+ 27.57s 30.37s 640.46s
1150 using NIS+ & nscd 10.25s 7.83s 26.51s
1152 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1154 Keep in mind that non-namelookup related operations dominate above times.
1155 It was just a common complain that using NIS+ unpacking the kernel is
1156 horribly slow.
1158 [1] The old nscd implementation is not available anymore since it was
1159 distributed with glibc up to version 2.0.98 and thus is now replaced.
1161 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1163 * Mark Kettenis provided a Hesiod NSS module.
1165 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1166 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1168 * rcmd can now handle netgroups (Dick Streefland).
1170 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1171 Bambrough.
1173 * Support for the IPv6 protocol has been added to the socket API, as per the
1174 latest draft standards.
1176 * Support for Linux 2.2 has been added.
1178 * Interface changes relative to the latest 2.0.x release:
1179 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1180 addseverity NEW: Unix98
1181 alphasort64 NEW: LFS
1182 argp_err_exit_status NEW: argp, GNU ext
1183 argp_error NEW: argp, GNU ext
1184 argp_failure NEW: argp, GNU ext
1185 argp_help NEW: argp, GNU ext
1186 argp_parse NEW: argp, GNU ext
1187 argp_program_bug_address NEW: argp, GNU ext
1188 argp_program_version NEW: argp, GNU ext
1189 argp_program_version_hook NEW: argp, GNU ext
1190 argp_state_help NEW: argp, GNU ext
1191 argp_usage NEW: argp, GNU ext
1192 authdes_create NEW: Secure RPC
1193 authdes_getucred NEW: Secure RPC
1194 authdes_pk_create NEW: Secure RPC
1195 backtrace NEW: GNU ext.
1196 backtrace_symbols NEW: GNU ext.
1197 backtrace_symbols_fd NEW: GNU ext.
1198 cacos NEW: ISO C 9x
1199 cacosf NEW: ISO C 9x
1200 cacosh NEW: ISO C 9x
1201 cacoshf NEW: ISO C 9x
1202 cacoshl NEW: ISO C 9x
1203 cacosl NEW: ISO C 9x
1204 capget NEW: kernel
1205 capset NEW: kernel
1206 carg NEW: ISO C 9x
1207 cargf NEW: ISO C 9x
1208 cargl NEW: ISO C 9x
1209 casin NEW: ISO C 9x
1210 casinf NEW: ISO C 9x
1211 casinh NEW: ISO C 9x
1212 casinhf NEW: ISO C 9x
1213 casinhl NEW: ISO C 9x
1214 casinl NEW: ISO C 9x
1215 catan NEW: ISO C 9x
1216 catanf NEW: ISO C 9x
1217 catanh NEW: ISO C 9x
1218 catanhf NEW: ISO C 9x
1219 catanhl NEW: ISO C 9x
1220 catanl NEW: ISO C 9x
1221 cbc_crypt NEW: Secure RPC
1222 ccos NEW: ISO C 9x
1223 ccosf NEW: ISO C 9x
1224 ccosh NEW: ISO C 9x
1225 ccoshf NEW: ISO C 9x
1226 ccoshl NEW: ISO C 9x
1227 ccosl NEW: ISO C 9x
1228 cexp NEW: ISO C 9x
1229 cexpf NEW: ISO C 9x
1230 cexpl NEW: ISO C 9x
1231 cimag NEW: ISO C 9x
1232 cimagf NEW: ISO C 9x
1233 cimagl NEW: ISO C 9x
1234 clearerr_locked REMOVED
1235 clntunix_create NEW: sunrpc ext
1236 clog NEW: ISO C 9x
1237 clog10 NEW: ISO C 9x
1238 clog10f NEW: ISO C 9x
1239 clog10l NEW: ISO C 9x
1240 clogf NEW: ISO C 9x
1241 clogl NEW: ISO C 9x
1242 conj NEW: ISO C 9x
1243 conjf NEW: ISO C 9x
1244 conjl NEW: ISO C 9x
1245 cpow NEW: ISO C 9x
1246 cpowf NEW: ISO C 9x
1247 cpowl NEW: ISO C 9x
1248 cproj NEW: ISO C 9x
1249 cprojf NEW: ISO C 9x
1250 cprojl NEW: ISO C 9x
1251 creal NEW: ISO C 9x
1252 crealf NEW: ISO C 9x
1253 creall NEW: ISO C 9x
1254 creat64 NEW: LFS
1255 csin NEW: ISO C 9x
1256 csinf NEW: ISO C 9x
1257 csinh NEW: ISO C 9x
1258 csinhf NEW: ISO C 9x
1259 csinhl NEW: ISO C 9x
1260 csinl NEW: ISO C 9x
1261 csqrt NEW: ISO C 9x
1262 csqrtf NEW: ISO C 9x
1263 csqrtl NEW: ISO C 9x
1264 ctan NEW: ISO C 9x
1265 ctanf NEW: ISO C 9x
1266 ctanh NEW: ISO C 9x
1267 ctanhf NEW: ISO C 9x
1268 ctanhl NEW: ISO C 9x
1269 ctanl NEW: ISO C 9x
1270 des_setparity NEW: Secure RPC
1271 ecb_crypt NEW: Secure RPC
1272 endutxent NEW: Unix98
1273 exp10 NEW: ISO C 9x
1274 exp10f NEW: ISO C 9x
1275 exp10l NEW: ISO C 9x
1276 exp2 NEW: ISO C 9x
1277 exp2f NEW: ISO C 9x
1278 exp2l NEW: ISO C 9x
1279 fattach NEW: STREAMS
1280 fdetach NEW: STREAMS
1281 fdim NEW: ISO C 9x
1282 fdimf NEW: ISO C 9x
1283 fdiml NEW: ISO C 9x
1284 feclearexcept NEW: ISO C 9x
1285 fegetenv NEW: ISO C 9x
1286 fegetexceptflag NEW: ISO C 9x
1287 fegetround NEW: ISO C 9x
1288 feholdexcept NEW: ISO C 9x
1289 feof_locked REMOVED
1290 feraiseexcept NEW: ISO C 9x
1291 ferror_locked REMOVED
1292 fesetenv NEW: ISO C 9x
1293 fesetexceptflag NEW: ISO C 9x
1294 fesetround NEW: ISO C 9x
1295 fetestexcept NEW: ISO C 9x
1296 feupdateenv NEW: ISO C 9x
1297 fflush_locked REMOVED
1298 ffsl NEW: GNU ext.
1299 ffsll NEW: GNU ext.
1300 fgetpos64 NEW: LFS
1301 fgets_unlocked NEW: GNU ext.
1302 fileno_locked REMOVED
1303 fma NEW: ISO C 9x
1304 fmaf NEW: ISO C 9x
1305 fmal NEW: ISO C 9x
1306 fmax NEW: ISO C 9x
1307 fmaxf NEW: ISO C 9x
1308 fmaxl NEW: ISO C 9x
1309 fmin NEW: ISO C 9x
1310 fminf NEW: ISO C 9x
1311 fminl NEW: ISO C 9x
1312 fmtmsg NEW: Unix98
1313 fopen64 NEW: LFS
1314 fputc_locked REMOVED
1315 fputs_unlocked NEW: GNU ext.
1316 fread_unlocked NEW: GNU ext.
1317 freopen64 NEW: LFS
1318 fseeko NEW: Unix98
1319 fsetpos64 NEW: LFS
1320 fstatfs64 NEW: LFS
1321 fstatvfs NEW: Unix98
1322 fstatvfs64 NEW: LFS
1323 ftello NEW: Unix98
1324 ftello64 NEW: LFS
1325 ftruncate64 NEW: LFS
1326 ftw64 NEW: LFS
1327 fwrite_unlocked NEW: GNU ext.
1328 gai_strerror NEW: IPv6
1329 gamma_r REMOVED
1330 gammaf_r REMOVED
1331 gammal_r REMOVED
1332 getchar_locked REMOVED
1333 getdate NEW: Unix98
1334 getdate_err NEW: Unix98
1335 getdate_r NEW: GNU ext.
1336 getmsg NEW: STREAMS
1337 getnameinfo NEW: IPv6
1338 getnetname NEW: Secure RPC
1339 getpmsg NEW: STREAMS
1340 getpt NEW: Unix98 PTY
1341 getrlimit64 NEW: LFS
1342 getutxent NEW: Unix98
1343 getutxid NEW: Unix98
1344 getutxline NEW: Unix98
1345 glob64 NEW: GNU ext.
1346 globfree64 NEW: GNU ext.
1347 gnu_get_libc_release NEW: GNU ext.
1348 gnu_get_libc_version NEW: GNU ext.
1349 grantpt NEW: Unix98 PTY
1350 host2netname NEW: Secure RPC
1351 iconv NEW: iconv
1352 iconv_close NEW: iconv
1353 iconv_open NEW: iconv
1354 if_freenameindex NEW: IPv6
1355 if_indextoname NEW: IPv6
1356 if_nameindex NEW: IPv6
1357 if_nametoindex NEW: IPv6
1358 in6addr_any NEW: IPv6
1359 in6addr_loopback NEW: IPv6
1360 inet6_isipv4mapped NEW: IPv6
1361 isastream NEW: STREAMS
1362 iswblank NEW: GNU ext.
1363 key_decryptsession NEW: Secure RPC
1364 key_decryptsession_pk NEW: Secure RPC
1365 key_encryptsession NEW: Secure RPC
1366 key_encryptsession_pk NEW: Secure RPC
1367 key_gendes NEW: Secure RPC
1368 key_get_conv NEW: Secure RPC
1369 key_secretkey_is_set NEW: Secure RPC
1370 key_setnet NEW: Secure RPC
1371 key_setsecret NEW: Secure RPC
1372 llrint NEW: ISO C 9x
1373 llrintf NEW: ISO C 9x
1374 llrintl NEW: ISO C 9x
1375 llround NEW: ISO C 9x
1376 llroundf NEW: ISO C 9x
1377 llroundl NEW: ISO C 9x
1378 log2 NEW: ISO C 9x
1379 log2f NEW: ISO C 9x
1380 log2l NEW: ISO C 9x
1381 lrint NEW: ISO C 9x
1382 lrintf NEW: ISO C 9x
1383 lrintl NEW: ISO C 9x
1384 lround NEW: ISO C 9x
1385 lroundf NEW: ISO C 9x
1386 lroundl NEW: ISO C 9x
1387 lseek64 NEW: LFS
1388 makecontext NEW: Unix98
1389 mempcpy NEW: GNU ext.
1390 mmap64 NEW: LFS
1391 moncontrol REMOVED
1392 modify_ldt NEW: kernel
1393 nan NEW: ISO C 9x
1394 nanf NEW: ISO C 9x
1395 nanl NEW: ISO C 9x
1396 nearbyint NEW: ISO C 9x
1397 nearbyintf NEW: ISO C 9x
1398 nearbyintl NEW: ISO C 9x
1399 netname2host NEW: Secure RPC
1400 netname2user NEW: Secure RPC
1401 nexttoward NEW: ISO C 9x
1402 nexttowardf NEW: ISO C 9x
1403 nexttowardl NEW: ISO C 9x
1404 nftw NEW: Unix98
1405 nftw64 NEW: LFS
1406 open64 NEW: LFS
1407 passwd2des NEW: Secure RPC
1408 pow10 NEW: GNU ext.
1409 pow10f NEW: GNU ext.
1410 pow10l NEW: GNU ext.
1411 pread NEW: Unix98
1412 pread64 NEW: LFS
1413 printf_size NEW: GNU ext.
1414 printf_size_info NEW: GNU ext.
1415 profil_counter REMOVED
1416 pthread_mutexattr_getkind_np REPLACED
1417 pthread_mutexattr_setkind_np REPLACED
1418 ptsname NEW: Unix98 PTY
1419 ptsname_r NEW: Unix98 PTY
1420 putc_locked REMOVED
1421 putchar_locked REMOVED
1422 putgrent NEW: GNU ext.
1423 putmsg NEW: STREAMS
1424 putpmsg NEW: STREAMS
1425 pututxline NEW: Unix98
1426 pwrite NEW: Unix98
1427 pwrite64 NEW: LFS
1428 readdir64 NEW: LFS
1429 readdir64_r NEW: LFS
1430 remquo NEW: ISO C 9x
1431 remquof NEW: ISO C 9x
1432 remquol NEW: ISO C 9x
1433 round NEW: ISO C 9x
1434 roundf NEW: ISO C 9x
1435 roundl NEW: ISO C 9x
1436 rtime NEW: GNU ext.
1437 scalbln NEW: ISO C 9x
1438 scalblnf NEW: ISO C 9x
1439 scalblnl NEW: ISO C 9x
1440 scandir64 NEW: LFS
1441 sendfile NEW: kernel
1442 setcontext NEW: Unix98
1443 setrlimit64 NEW: LFS
1444 setutxent NEW: Unix98
1445 sighold NEW: Unix98
1446 sigignore NEW: Unix98
1447 sigqueue NEW: POSIX.1b
1448 sigrelse NEW: Unix98
1449 sigset NEW: POSIX.1b
1450 sigtimedwait NEW: POSIX.1b
1451 sigwaitinfo NEW: POSIX.1b
1452 sincos NEW: GNU ext.
1453 sincosf NEW: GNU ext.
1454 sincosl NEW: GNU ext.
1455 statfs64 NEW: LFS
1456 statvfs NEW: Unix98
1457 statvfs64 NEW: LFS
1458 strcasestr NEW: GNU ext.
1459 strtoimax NEW: ISO C 9x
1460 strtoumax NEW: ISO C 9x
1461 strverscmp NEW: GNU ext.
1462 svcauthdes_stats NEW: Secure RPC
1463 svcunix_create NEW: sunrpc etx
1464 svcunixfd_create NEW: sunrpc ext
1465 swapcontext NEW: Unix98
1466 tcgetsid NEW: Unix98 PTY
1467 tdestroy NEW: GNU ext.
1468 tgamma NEW: ISO C 9x
1469 tgammaf NEW: ISO C 9x
1470 tgammal NEW: ISO C 9x
1471 tmpfile64 NEW: LFS
1472 trunc NEW: ISO C 9x
1473 truncate64 NEW: LFS
1474 truncf NEW: ISO C 9x
1475 truncl NEW: ISO C 9x
1476 umount2 NEW: kernel
1477 unlockpt NEW: Unix98 PTY
1478 updwtmpx NEW: Unix98
1479 user2netname NEW: Secure RPC
1480 utmpxname NEW: Unix98
1481 versionsort NEW: GNU ext.
1482 versionsort64 NEW: GNU ext.
1483 waitid NEW: Unix98
1484 wcscasecmp NEW: GNU ext.
1485 wcsncasecmp NEW: GNU ext.
1486 wcsnlen NEW: GNU ext.
1487 wcstoimax NEW: ISO C 9x
1488 wcstoll NEW: ISO C 9x
1489 wcstoull NEW: ISO C 9x
1490 wcstoumax NEW: ISO C 9x
1491 wcswcs NEW: Unix98
1492 wordexp NEW: POSIX.2
1493 wordfree NEW: POSIX.2
1494 write_profiling REMOVED
1495 xdecrypt NEW: Secure RPC
1496 xdr_authdes_cred NEW: Secure RPC
1497 xdr_authdes_verf NEW: Secure RPC
1498 xdr_cryptkeyarg NEW: Secure RPC
1499 xdr_cryptkeyarg2 NEW: Secure RPC
1500 xdr_cryptkeyres NEW: Secure RPC
1501 xdr_getcredres NEW: Secure RPC
1502 xdr_key_netstarg NEW: Secure RPC
1503 xdr_key_netstres NEW: Secure RPC
1504 xdr_keybuf NEW: Secure RPC
1505 xdr_keystatus NEW: Secure RPC
1506 xdr_netnamestr NEW: Secure RPC
1507 xdr_sizeof NEW: Secure RPC
1508 xdr_unixcred NEW: sunrpc ext
1509 xencrypt NEW: Secure RPC
1510 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1511 \f
1512 Version 2.0.6
1514 * more bug fixes
1516 \f
1517 Version 2.0.5
1519 * more bug fixes
1521 * inet_ntoa is thread-safe
1523 * updwtmp is moved from libutil to libc
1525 * rewrite of cbrt function
1527 * update of timezone data
1528 \f
1529 Version 2.0.4
1531 * more bug fixes
1532 \f
1533 Version 2.0.3
1535 * more bug fixes
1536 \f
1537 Version 2.0.2
1539 * more bug fixes
1541 * add atoll function
1543 * fix complex problems in Berkeley DB code
1545 * fix math functions
1546 \f
1547 Version 2.0.1
1549 * fixed lots of header problems (especially Linux/GNU specific)
1551 * dynamic loader preserves all registers
1553 * Roland McGrath provided support for handling of auxiliary objects in
1554 the ELF dynamic loader.
1556 * support for parallel builds is improved
1557 \f
1558 Version 2.0
1560 * GNU extensions are no longer declared by default. To enable them you
1561 must define the macro `_GNU_SOURCE' in your program or compile with
1562 `-D_GNU_SOURCE'.
1564 * The library has changed from using GNU ld symbol aliases to using weak
1565 symbols where available. The ELF object file format supports weak
1566 symbols; GNU ld also supports weak symbols in the a.out format. (There
1567 is also now support for other GNU ld extensions in ELF. Use the
1568 `--with-elf' option to configure to indicate you have ELF, and
1569 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1570 of many files which contained only symbol aliases, reducing the size of
1571 the source and the compiled library; many other files were renamed to
1572 less cryptic names previously occupied by the symbol alias files.
1573 There is a new header file <elf.h> for programs which operate on
1574 files in the ELF format.
1576 * Converted to Autoconf version 2, so `configure' has more options.
1577 Run `configure --help' to see the details.
1579 * The library can now be configured to build profiling, highly-optimized
1580 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1581 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1582 `configure' enable building these extra libraries. The shared library is
1583 built by default when using both ELF and GNU ld. When shared libraries
1584 are enabled, the new library `-ldl' is available for arbitrary run-time
1585 loading of shared objects; its interface is defined in <dlfcn.h>. The
1586 new header file <link.h> gives access to the internals of the run-time
1587 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1588 application of same name on other systems and it provides information
1589 about dynamically linked binaries.
1591 * The C library now provides the run-time support code for profiling
1592 executables compiled with `-pg'. Programs can control the profiling code
1593 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1594 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1595 the support for this file format was contributed by David Mosberger-Tang.
1597 * The math code has been replaced with a math library based on fdlibm from
1598 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1599 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1600 functions. The math functions now reside in a separate library, so
1601 programs using them will need to use `-lm' their linking commands.
1603 * John C. Bowman contributed optimized ix87 assembler inline functions.
1605 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1606 mechanism similar to that found in Solaris 2. This is now used for the
1607 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1608 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1609 file controls what services are used for each individual database. This
1610 works by loading shared libraries with names specified in `nsswitch.conf',
1611 so service modules can be changed or added at any time without even
1612 relinking any program. Currently there are the file, db, and NIS based
1613 NSS services available.
1615 * The new functions `strtoq' and `strtouq' parse integer values from
1616 strings, like `strtol' and `strtoul', but they return `long long int' and
1617 `unsigned long long int' values, respectively (64-bit quantities).
1619 * The new functions `strtof' and `strtold' parse floating-point values from
1620 strings, like `strtod', but they return `float' and `long double' values,
1621 respectively (on some machines `double' and `long double' are the same).
1623 * Ulrich Drepper has contributed new implementations of the floating-point
1624 printing and reading code used in the `printf' family of functions and
1625 `strtod', `strtof', and `strtold'. These new functions are perfectly
1626 accurate, and much faster than the old ones.
1628 * The implementation of the POSIX locale model was completely rewritten by
1629 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1630 to compile the POSIX locale definition.
1632 * The former dummy implementations of the strcoll and strxfrm function are
1633 now replaced by fully functional code contributed by Ulrich Drepper. The
1634 collation information comes from the POSIX locale definitions.
1636 * The new header <langinfo.h> defines an interface for accessing
1637 various locale-dependent data (using the locale chosen with `setlocale').
1639 * Ulrich Drepper has contributed a new suite of functions for operation on
1640 wide-character and multibyte-character strings, in <wchar.h>;
1641 and classification and case conversion of wide characters, in <wctype.h>.
1642 These new functions are conforming to the ISO C, Amendement 1 specification.
1644 * There is now a second implementation of the standard I/O library available.
1645 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1646 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1648 * You can now use positional parameter specifications in format strings
1649 for the `printf' and `scanf' families of functions. For example,
1650 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1651 ``Number 6, Mr Jones''. This is mainly useful when providing different
1652 format strings for different languages, whose grammars may dictate
1653 different orderings of the values being printed. To support this
1654 feature, the interface for `register_printf_handler' has changed; see
1655 the header file <printf.h> for details.
1657 * The `printf' and `scanf' families of functions now understand a new
1658 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1659 to group numbers as indicated by the locale; for `scanf' and friends, this
1660 says to accept as valid only a number with all the proper grouping
1661 separators in the right places. In the default "C" locale, numbers are
1662 not grouped; but locales for specific countries will define the usual
1663 conventions (i.e. separate thousands with `,' in the US locale).
1665 * The pgrp functions have been regularized, slightly incompatibly but much
1666 less confusingly. The core functions are now `getpgid' and `setpgid',
1667 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1668 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1669 provided for compatibility. There is no longer an incompatible `getpgrp'
1670 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1672 * The new header file <fts.h> and suite of functions simplify programs that
1673 operate on directory trees. This code comes from 4.4 BSD.
1675 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1676 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1677 NSS scheme used in glibc.
1679 * There is a new malloc debugging hook `__memalign_hook'.
1681 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1682 `unsigned int' in <sys/types.h>. These are for compatibility only and
1683 their use is discouraged.
1685 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1686 done differently, so that it works even without GNU ld.
1688 * New function `euidaccess' checks allowed access to a file like `access',
1689 but using the effective IDs instead of the real IDs.
1691 * The time zone data files have been updated for the latest and greatest
1692 local time conventions of the countries of the world.
1694 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1695 see <dirent.h>.
1697 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1698 for formatting floating-point numbers. They are provided only for
1699 compatibility; new programs should use `sprintf' instead. There are
1700 also equivalent function for the `long double' floating-point type and
1701 all functions also exist in a reentrant form.
1703 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1704 functions for maintaining the login-record files (primarily of use to
1705 system programs such as `login'), and convenient functions for
1706 allocating and initializing a pseudo-terminal (pty) device.
1708 * Ulrich Drepper has contributed new support for System V style
1709 shared memory and IPC on systems that support it.
1711 * Ulrich Drepper has contributed several miscellaneous new functions found
1712 in System V: The `hsearch' family of functions provide an effective
1713 implementation of hash tables; `a64l' and `l64a' provide a very simple
1714 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1715 number generator.
1717 * Ulrich Drepper has contributed new reentrant counterparts for the
1718 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1720 * Ulrich Drepper has contributed new, highly-optimized versions of several
1721 string functions for the i486/Pentium family of processors.
1723 * Ulrich Drepper has updated the Linux-specific code, based largely
1724 on work done in Hongjiu Lu's version of GNU libc for Linux.
1725 The GNU library now supports Linux versions 2.0.10 and later,
1726 using the ELF object file format (i[3456]86-*-linux).
1728 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1730 * David Mosberger-Tang and Richard Henderson have ported the C library
1731 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1732 dynamic linking support for ELF/Alpha.
1734 * Richard Henderson contributed several Alpha optimized assembler function
1735 for arithmetic and string handling.
1737 * Ulrich Drepper has contributed a new set of message catalog functions to
1738 support multiple languages using the <libintl.h> interface, for use with
1739 his new package GNU gettext. Translation volunteers have contributed
1740 catalogs of the library's messages in Spanish, German, and Korean.
1742 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1743 program and the `catgets' function for reading the catalog files it
1744 creates. (The <libintl.h> interface is preferred; we include the
1745 <nl_types.h> interface using `catgets' only for source compatibility with
1746 programs already written to use it.)
1748 * New header file <values.h> gives SVID-compatible names for <limits.h>
1749 constants.
1751 * Various new macros, declarations, and small header files for compatibility
1752 with 4.4 BSD.
1754 * New function `group_member' is a convenient way to check if a process has
1755 a given effective group ID.
1757 * When using GCC 2.7 and later, the socket functions are now declared in a
1758 special way so that passing an argument of type `struct sockaddr_in *',
1759 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1760 `struct sockaddr *' type, does not generate a type-clash warning.
1762 * New function `error' declared in header file <error.h> is a convenient
1763 function for printing error messages and optionally exiting; this is the
1764 canonical function used in GNU programs. The new functions `err', `warn',
1765 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1766 doing the same thing.
1768 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1769 POSIX.2 `glob' function to do ~ and {...} expansion.
1771 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1772 `clearenv' which is used in POSIX.9 is also available.
1774 * New function `getsid' returns session ID number on systems that support it.
1776 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1777 files <db.h> and <mpool.h> provide a rich set of functions for several
1778 types of simple databases stored in memory and in files, and <ndbm.h> is
1779 an old `ndbm'-compatible interface using the `db' functions. Link with
1780 `-ldb' to get these functions.
1782 * New macro `strdupa' copies a string like `strdup', but uses local stack
1783 space from `alloca' instead of dynamic heap space from `malloc'.
1785 * New function `strnlen' is like `strlen' but searches only a given maximum
1786 number of characters for the null terminator. `stpncpy', `strndup' and
1787 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1788 function.
1790 * New function `statfs' in header <sys/statfs.h>.
1792 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1793 provide convenient functions for operating on blocks of null-terminated
1794 strings.
1796 * A new suite of functions in <utmp.h> handle all the details of reading
1797 and writing the utmp file.
1799 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1800 Thorsten Kukuk.
1802 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1803 completely POSIX compliant and also implemented the extended functionality
1804 to handle alternate digit representation and alternate era date formats.
1806 * Ulrich Drepper provided an implementation of the `strptime' function
1807 defined in XPG4.2 which transforms a string into a `struct tm' value.
1809 * Paul Eggert provided the tzselect shell script as part of the timezone
1810 code. The shell script makes it easy to select the correct timezone
1811 specification.
1813 * The implementation of the malloc family of functions is completely replaced
1814 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1815 The implementation uses the mmap function (if available) and it is
1816 optimized for the use in multi threaded programs.
1818 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1819 functions. This new functionality is usable by specifying a special
1820 salt string and it is compatible with implementation on *BSD systems.
1822 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1823 `getsubopt' to handle second level command line options, `bsd_signal'
1824 to access BSD style `signal' functionality, the obsolete `regexp' style
1825 expression matcher.
1827 * the `lchown' function is available on system which support this
1828 functionality.
1830 * The implementation of the shadow password handling function was contributed
1831 by Ulrich Drepper.
1833 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1835 * POSIX.1g support was added. The <sys/select.h> header is available,
1836 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1837 implementation of `getaddrinfo'.
1838 \f
1839 Version 1.09
1841 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1843 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1844 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1846 * The new function `daemon' from 4.4 BSD is useful for server programs that
1847 want to put themselves in the background.
1849 * Joel Sherrill has contributed support for several standalone boards that
1850 run without an operating system.
1852 * `printf', `scanf' and friends now accept a `q' type modifier for long
1853 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1855 * All of the code taken from BSD (notably most of the math and networking
1856 routines) has been updated from the BSD 4.4-Lite release.
1858 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1860 * The new functions `getdomainname' and `setdomainname' fetch or change the
1861 YP/NIS domain name. These are system calls which exist on systems which
1862 have YP (aka NIS).
1864 * The time zone data files have been updated for the latest international
1865 conventions.
1867 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1868 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1869 \f
1870 Version 1.08
1872 * The C library now includes support for Sun RPC, from Sun's free
1873 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1874 are included. (There is still no support for YP.)
1876 * Tom Quinn has contributed a port of the C library to SGI machines running
1877 Irix 4 (mips-sgi-irix4).
1879 * The new `lockf' function is a simplified interface to the locking
1880 facilities of `fcntl', included for compatibility.
1882 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1884 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1886 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1887 compatibility.
1889 * The error message printed by `assert' for a failed assertion now includes
1890 the name of the program (if using GNU ld) and the name of the calling
1891 function (with versions of GCC that support this).
1893 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1895 * The library now includes the <sys/mman.h> header file and memory
1896 management functions `mmap', `munmap', `mprotect', `msync', and
1897 `madvise', on systems that support those facilities.
1899 * The interface for `mcheck' has changed slightly: the function called to
1900 abort the program when an allocation inconsistency is detected now takes
1901 an argument that indicates the type of failure. The new function
1902 `mprobe' lets you request a consistency check for a particular block at
1903 any time (checks are normally done only when you call `free' or `realloc'
1904 on a block).
1906 * It is now possible to easily cross-compile the C library, building on one
1907 system a library to run on another machine and/or operating system. All
1908 you need to do is set the variable `HOST_CC' in `configparms' to the
1909 native compiler for programs to run on the machine you are building on (a
1910 few generator programs are used on Unix systems); set `CC' to the
1911 cross-compiler.
1913 * The new function `fexecve' (only implemented on the GNU system) executes
1914 a program file given a file descriptor already open on the file.
1915 \f
1916 Version 1.07
1918 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1919 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1921 * You can set the variable `libprefix' in `configparms' to specify a prefix
1922 to be prepended to installed library files; this makes it easy to install
1923 the GNU C library to be linked as `-lgnuc' or whatever.
1925 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1926 copies a limited number of characters from a string, and returns the
1927 address of the last character written.
1929 * You no longer need to check for whether the installed `stddef.h' is
1930 compatible with the GNU C library. configure now checks for you.
1932 * You can now define a per-stream `fileno' function to convert the
1933 stream's cookie into an integral file descriptor.
1935 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1936 allocates zero bytes of storage, and returns a unique pointer which
1937 you can pass to `realloc' or `free'. The behavior is undefined if
1938 you dereference this pointer.
1940 * The C library now runs on Sony NEWS m68k machines running either
1941 NewsOS 3 or NewsOS 4.
1943 * The new `syscall' function is a system-dependent primitive function
1944 for invoking system calls. It has the canonical behavior on Unix
1945 systems, including unreliable return values for some calls (such as
1946 `pipe', `fork' and `getppid').
1948 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1949 to `EAGAIN', which is the preferred name. On systems whose kernels
1950 use two distinct codes, the C library now translates EWOULDBLOCK to
1951 EAGAIN in every system call function.
1952 \f
1953 Version 1.06
1955 * The GNU C Library Reference Manual is now distributed with the library.
1956 `make dvi' will produce a DVI file of the printed manual.
1957 `make info' will produce Info files that you can read on line using C-h i
1958 in Emacs or the `info' program.
1959 Please send comments on the manual to bug-glibc-manual@gnu.org.
1961 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1963 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1965 * Jason Merrill has contributed a port to the Sequent Symmetry running
1966 Dynix version 3 (i386-sequent-dynix).
1968 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1969 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1971 * New function `memory_warnings' lets you arrange to get warnings when
1972 malloc is running out of memory to allocate, like Emacs gives you.
1974 * The C library now contains the relocating allocator used in Emacs 19 for
1975 its editing buffers. This allocator (ralloc) minimizes allocation
1976 overhead and fragmentation by moving allocated regions around whenever it
1977 needs to. You always refer to a ralloc'd region with a "handle" (a
1978 pointer to a pointer--an object of type `void **').
1980 * There is a new `printf' format: `%m' gives you the string corresponding
1981 to the error code in `errno'.
1983 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1984 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1985 pass, the `a' modifier says to fill in a `char **' you pass with a
1986 malloc'd string.
1988 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1989 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1990 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1992 * `mkstemp' is a traditional Unix function to atomically create and open a
1993 uniquely-named temporary file.
1994 \f
1995 Version 1.05
1997 * The standard location for the file that says what the local timezone is
1998 has changed again. It is now `/usr/local/etc/localtime' (or more
1999 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2001 * The distribution no longer contains any files with names longer than 14
2002 characters.
2004 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2005 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2007 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2008 \f
2009 Version 1.04
2011 * The configuration process has changed quite a bit. The `configure'
2012 script is now used just like the configuration scripts for other GNU
2013 packages. The `sysdeps' directory hierarchy is much rearranged.
2014 The file `INSTALL' explains the new scheme in detail.
2016 * The header files no longer need to be processed into ANSI C and
2017 traditional C versions. There is just one set of files to install, and
2018 it will work with ANSI or old C compilers (including `gcc -traditional').
2020 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2021 MIPS DECStation running Ultrix 4.
2023 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2024 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2025 made itself into a shared library.
2027 * Yet further improved support for the i386, running 4.3 BSD-like systems
2028 (such as Mach 3 with the Unix single-server), or System V.
2030 * New function `strncasecmp' to do case-insensitive string comparison
2031 with limited length.
2033 * New function `strsep' is a reentrant alternative to `strtok'.
2035 * New functions `scandir' and `alphasort' for searching directories.
2037 * New function `setenv' is a better interface to `putenv'.
2039 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2040 function for traversing a directory tree.
2042 * The GNU obstack package is now also part of the C library.
2043 The new function `open_obstack_stream' creates a stdio stream that
2044 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2045 formatted output directly to an obstack.
2047 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2048 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2050 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2052 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2053 things to your strings.
2055 * There are some new test programs: test-fseek, testmb, and testrand.
2057 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2058 These ports are not finished, but are a good starting place for really
2059 supporting those systems.
2061 * `/etc/localtime' is now the standard location for the file that says what
2062 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2063 This follows the general principle that `/etc' is the place for all local
2064 configuration files.
2066 * The C library header files now use `extern "C"' when used by the C++
2067 compiler, so the C library should now work with C++ code.
2069 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2070 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2071 in <strings.h>.)
2073 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2074 function which uses the `merge sort' algorithm, and is said to be
2075 significantly faster than the old GNU `qsort' function. Merge sort is
2076 now the standard `qsort' function. The new algorithm can require a lot
2077 of temporary storage; so, the old sorting function is called when the
2078 required storage is not available.
2080 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2081 provides the Unix `crypt' function, plus some other entry points.
2083 * The code and header files taken from 4.4 BSD have been updated with the
2084 latest files released from Berkeley.
2085 \f
2086 ----------------------------------------------------------------------
2087 Copyright information:
2089 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2091 Permission is granted to anyone to make or distribute verbatim copies
2092 of this document as received, in any medium, provided that the
2093 copyright notice and this permission notice are preserved,
2094 thus giving the recipient permission to redistribute in turn.
2096 Permission is granted to distribute modified versions
2097 of this document, or of portions of it,
2098 under the above conditions, provided also that they
2099 carry prominent notices stating who last changed them.
2100 \f
2101 Local variables:
2102 version-control: never
2103 fill-column: 76
2104 End: