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1 GNU C Library NEWS -- history of user-visible changes. 2006-09-29
2 Copyright (C) 1992-2002,2003,2004,2005,2006 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 2.5
10 * For Linux, the sorting of addresses returned by getaddrinfo now also
11 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
12 Implemented by Ulrich Drepper.
14 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
15 Implemented by Ulrich Drepper.
17 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
19 * New iconv module for MIK. Contributed by Alexander Shopov.
21 * For sites with broken group and/or passwd database, the auto-propagate
22 option of nscd can prevent creating ID lookup entries from the results
23 of a name lookup and vice versa. This usually is no problem but some
24 site might have problems with the default behavior.
25 Implemented by Ulrich Drepper.
27 * Iterating over entire database in NIS can be slow. With the
28 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
29 to trade time for memory. The entire database will be read at once.
30 Implemented by Ulrich Drepper.
32 * The interfaces introduced in RFC 3542 have been implemented by
33 Ulrich Drepper.
35 * Support for the new ELF hash table format was added by Ulrich Drepper.
37 * Support for priority inheritance mutexes added by Jakub Jelinek and
38 Ulrich Drepper.
40 * Support for priority protected mutexes added by Jakub Jelinek.
42 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
43 or_IN, csb_PL, fy_NL, sr_ME.
44 \f
45 Version 2.4
47 * More overflow detection functions.
49 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
50 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
52 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
53 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
54 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
55 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
56 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
57 by Masahide Washizawa.
59 * It is now possible to install audit libraries for the dynamic linker using
60 LD_AUDIT. Implemented by Ulrich Drepper.
62 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
63 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
64 For a libc and libpthread that works well on Linux 2.4 kernels, we
65 recommend using the stable 2.3 branch.
67 * The new function open_wmemstream acts like open_memstream,
68 but uses a wchar_t wide character buffer.
70 * The new function ppoll is an improved version of poll, similar to pselect.
72 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
73 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
74 renameat, unlinkat, linkat, symlinkat, readlinkat.
76 * New Linux kernel system calls: unshare,
77 inotify_init, inotify_add_watch, inotify_rm_watch.
79 * The euidaccess function is now also known by the alias eaccess,
80 for compatibility with some other systems.
82 * Timezone data updated to 2006b version.
83 \f
84 Version 2.3.6
86 * The following bugs are resolved with this release:
88 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
89 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
90 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
91 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
92 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
93 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
95 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
97 * As of this release, GCC 4 can be used to compile the C Library.
99 * Timezone data updated to 2005m version.
100 \f
101 Version 2.3.5
103 * The following bugs are resolved with this release:
105 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
106 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
107 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
108 777, 787, 821, 822, 823, 825
110 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
111 \f
112 Version 2.3.4
114 * Support for RFC 3678. Real implementations exist only for Linux so far.
115 Implemented by Ulrich Drepper.
117 * nscd can now cache entries persistently. Expiring entries are reloaded.
118 For speedups the cache can be shared in memory with client processes.
119 Implemented by Ulrich Drepper.
121 * nscd can now perform SELinux checks.
122 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
124 * getaddrinfo queries are now cached. Canonical name lookup is performed
125 efficiently.
126 Implemented by Ulrich Drepper.
128 * The nothrow function attribute is used when headers are used by gcc when
129 compiling C code. This can avoid significant amounts of exception
130 handling data.
132 * The malloc functions perform more error checking and are stricter when
133 it comes to reacting on errors. The default action is to terminate
134 the process after showing an error message. Implemented by Ulrich Drepper.
136 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
137 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
139 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
140 namespaces using the new function dlmopen(). This feature is of course,
141 like most other dynamic loading functionality, not available in statically
142 linked applications. Implemented by Ulrich Drepper.
144 * Low-overhead boundary checking variants of string and some stdio functions
145 were added. These are to be used in conjunction with a gcc patch by
146 Jakub Jelinek which adds calls to these functions if possible.
147 Implemented by Jakub Jelinek and Ulrich Drepper.
149 * Old code for several operating systems and machine architectures that
150 have not been in working condition in a long time have been removed from
151 the main source tree maintained by the GNU C Library's maintainers.
152 These files are now reside in the separate `ports' source module
153 that is usable as an add-on when building the library.
154 \f
155 Version 2.3.3
157 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
158 interrogate the dynamic linker, compatible with the Solaris interface.
160 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
161 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
163 * getifaddrs now uses the netlink interface on Linux to get its information.
164 Implemented by Thorsten Kukuk.
166 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
167 Implemented by Ulrich Drepper.
169 * support for non-executable stacks on x86 has been added. Changes mostly
170 by Roland McGrath.
172 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
173 and Ulrich Drepper.
175 * getaddrinfo now performs destination address selection according to
176 RFC 3484.
177 \f
178 Version 2.3.2
180 * Thread-safe interfaces for many functions that access locale data
181 were added in version 2.3, but these features were omitted from NEWS.
182 Many functions have variants with an `_l' suffix that take a `locale_t'
183 object as a parameter rather than consulting the current locale.
184 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
185 create and maintain `locale_t' objects. Additionally, the new function
186 `uselocale' sets "the current locale" (as used by functions not so
187 parameterized) set for an individual thread. These features were added
188 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
190 * The functions getresuid, getresgid, setresuid, and setresgid, which
191 have long been available on Linux, are now declared in <unistd.h>
192 and are now also available on the Hurd.
194 * ELF thread-local storage support (TLS) now works on x86-64.
196 * The new dynamic string token $LIB is expanded in shared library names.
197 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
199 * Aldy Hernandez contributed complete software floating point support for
200 PowerPC machines with no FPU.
202 * fexecve is implemented on Linux.
204 * The `btowc' function should work at least twice as fast due to
205 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
207 * With approriate thread add-ons cancelable functions are now implemented
208 in libc.so as well. No need to call the function in libpthread. This
209 change allowed to finally disable the incorrect and expensive handling
210 of weak definition in ld.so.
212 * Yet more PLT entries in libc.so have been removed. We finally arrived
213 at the bare minimum. Startup times improved appropriately.
215 * Support for the new Linux/x86 system call interface was added. The
216 AT_SYSINFO auxiliary vector entry is recognized and handled.
217 \f
218 Version 2.3
220 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
221 charsets.
223 * iconv (the program and the interface) now accepts empty names (excluding
224 options like //TRANSLIT) to mean "use charset of current locale".
226 * localedef can now transliterate characters in strings which are not in
227 the provided charmap. The information from the input locale is used.
229 * Prelinking support was added for ELF targets. This requires additional
230 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
232 * Read-only stdio streams now use mmap to speed up operation by eliminating
233 copying and buffer underflows. To use add 'm' to the mode string of
234 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
236 * The malloc functions were completely rewritten by Wolfram Gloger based
237 on Doug Lea's malloc-2.7.0.c.
239 * Isamu Hasegawa contributed a completely new and POSIX-conformant
240 implementation of regex.
242 * Bruno Haible upgraded the iconv and locale implementation to support
243 Unicode 3.2.
245 * Contents of the LC_* and LANG environment variables in the CEN style are
246 not recognized anymore. It never was used. Change by Ulrich Drepper.
248 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
249 thread-local storage (TLS) ABI on some platforms.
250 Changes by Ulrich Drepper. SH support by Kaz Kojima.
252 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
253 EUC-JISX0213, and TSCII.
255 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
256 BSD-compatible interface for getting all network interface addresses.
257 Implementation for IPv4 by Roland McGrath.
259 * Loading of locale data is faster due to the introduction of a locale
260 archive. Implemented by Roland McGrath and Ulrich Drepper.
262 * Startup times are significantly reduced by not using exported functions
263 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
264 and Ulrich Drepper.
266 * Steven Munroe contributed a port to PowerPC64/Linux.
267 \f
268 Version 2.2.6
270 * The Hurd now uses the GNU libio implementation of stdio rather than the
271 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
273 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
274 with the same behavior as the Linux system call of the same name.
275 \f
276 Version 2.2.5
278 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
279 128-bit long double format.
281 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
282 IBM1161, and IBM1162 charsets.
284 * Andreas Jaeger contributed a port to x86-64/Linux.
286 * Peter Bruin contributed a port to PowerPC/Hurd.
288 * libc functions using I/O streams now can handle wide-oriented streams
289 as well.
291 * optimizations in the dynamic linker. Binaries created by recent binutils
292 versions start up quicker due to reduced time spent on relocations.
294 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
295 \f
296 Version 2.2.4
298 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
299 asinh, atanh, j0 for the 128-bit long double format.
301 * Bruno Haible updated all the code handling Unicode in some form to
302 support Unicode 3.1.
304 * Speed of regex for single-byte locales is back to previous levels.
305 Patch by Isamu Hasegawa.
307 * Alpha, SPARC, and IA-64 now also using floating stacks.
309 * Startup time of internationalized applications greatly improved through
310 iconv cache. Use iconvconfig to generate the cache file.
311 Contributed by Ulrich Drepper.
313 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
314 severe performance problems. Patch by David Mosberger.
316 * The Hurd port got a lot more functionality like AIO, various stdio
317 extensions, etc. Mainly done by Roland McGrath.
319 * mtrace can now lookup symbols in shared libraries.
320 \f
321 Version 2.2.3
323 * Intel's IA-64 math library is largely integrated. It provides fast and
324 accurate implementatations for most basic and standard math functions
325 in float, double, and long double format.
327 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
328 and asin for the 96-bit long double format and asin, log, tan for the
329 128-bit long double format.
331 * The beginning of a last-bit accurate math library by IBM Haifa were added.
332 The basic double functions exist today. Contributed by Abraham Ziv
333 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
334 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
336 * An asynchronous name lookup library was added. The interface is designed
337 after POSIX AIO. The proposal was circulated beforehand to get comments.
338 No negative ones came in. Implemented by Ulrich Drepper.
340 * Port to S390/64bit contributed by Martin Schwidefsky
341 <schwidefsky@de.ibm.com>.
343 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
344 of functions for Linux/IA-64.
346 * The RPC code is now thread safe. Threads can now use the same service
347 of different services at the same time. Patch by Eric Norum
348 <eric.norum@usask.ca> with some help by Ulrich Drepper.
350 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
351 family of functions for Linux/S390.
353 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
354 of functions for Linux/x86.
356 * Port to Linux/CRIS contributed by Axis Communications.
357 \f
358 Version 2.2.2
360 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
361 we can now check for namespace violations and missing declarations. The
362 result is that almost all headers are now Unix-compliant (as defined in
363 the upcoming XPG6). The negative side is that some programs might need
364 corrections, too, if they depend on the incorrect form of the headers in
365 previous versions which defined too many symbols and included too many
366 other headers.
368 * regex now handles multibyte character sets correctly.
369 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
371 * iconv (the program) does now conform to the upcoming XPG6 and handles
372 charmaps. Instead of the charset names the path of charmaps can be
373 provided and the conversion happens based on this data.
374 Contributed by Ulrich Drepper.
376 * The locale program now provides detailed information about the installed
377 locales. While
379 locale -a
381 only lists the names of the supported locales
383 locale -a --verbose
385 provides details such as country, language, and codeset name.
386 Contributed by Ulrich Drepper.
387 \f
388 Version 2.2.1
390 * The gencat program now parses the input file according to the charset
391 selected by the LC_CTYPE category. This is important for stateful
392 character sets. To make generating catalogs easier there is a way
393 to overwrite the charset selected by the locale: before the first
394 message or $ quote line the catalog can contain a line like
396 $ codeset=ISO-8859-2
398 to select the charset (ISO-8859-2 in this case).
400 Implemented by Shinya Hanataka and Ulrich Drepper.
402 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
403 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
404 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
406 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
407 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
409 * The LANGUAGE environment variable is now ignored unless the locale is
410 changed from the default "C" locale.
412 * The usual bug fixes.
413 \f
414 Version 2.2
416 * Greg McGary added runtime support for bounds checking using gcc's
417 new -fbounded-pointers option. ix86 target is complete. PowerPC
418 is in progress.
420 * Thorsten Kukuk added secure mode support to nscd.
422 * The Berkeley db libraries have been removed.
424 Related, the nss_db module is now in a separate package since it
425 obviously requires a database library being available.
427 * Wide character I/O streams implemented by Ulrich Drepper.
429 * Functions from the extended socket API added by Ulrich Drepper.
431 * Functions feenableexcept and fedisableexcept to control the
432 behaviour of individual exceptions have been added by Andreas Jaeger.
434 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
436 * The resolver code has been updated from bind 8.2.3-T5B which supports
437 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
438 and Mark Kettenis.
440 This change could in some situations effect backward compatibility. Since
441 now `_res' is a thread-local instead of a global variable, modifying it
442 in one thread does not have any effect in other threads.
444 The resolver library was also extended to allow IPv6 as the transport
445 protocol for the requests. This work was done by Stig Venaas.
447 * Compatibility code for K&R C compilers has been removed from the
448 header files. A ISO C compiler is needed to use the library
449 (conforming to either C89 or C99 standard).
451 * Complete rewrite of the localedef program to support multibyte character
452 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
453 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
454 Implemented by Ulrich Drepper.
456 Bruno Haible significantly improved the generation and use of the data
457 structures for the wide character tables.
459 * Plural handling in gettext implemented by Ulrich Drepper.
461 * The utmp daemon has been removed.
463 * The port to MIPS-Linux has been finished by Andreas Jaeger.
465 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
466 and Yutaka Niibe.
468 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
470 * POSIX barriers implemented by Kaz Kylheku.
472 * POSIX spawn function family implemented by Ulrich Drepper.
474 * POSIX spinlocks are now available.
476 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
478 * the configure option --enable-kernel=X.Y.Z allows to strip out
479 compatibility for kernel versions before X.Y.Z. This is currently only
480 implemented for Linux.
482 * the sockaddr_in6 structure changed. The IPv6 working group added a new
483 field sin6_scope_id. This means that all programs using IPv6 should be
484 recompiled. Don't expect binary compatibility with previous glibc
485 versions.
487 * various conversion modules for IBM character sets contributed by
488 Masahide Washizawa.
490 * IA-64 port by Jes Sorensen and HJ Lu.
492 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
493 Compiling the GNU C Library for Linux/ia64
494 ******************************************
496 Please refer to the file INSTALL in the same directory as you found
497 this file for general information about configuring and compiling
498 glibc.
500 For general inquiries about glibc under Linux/ia64 please use the
501 following mailing list linux-ia64@linuxia64.org or one of the relevant
502 glibc mailing lists.
504 Recommended Tools for Compilation
505 =================================
507 In order for glibc-2.2 to build correctly on the ia64 you need at
508 least the following versions of the GNU tools (the :
510 * The Cygnus toolchain snapshot for the ia64 as of August 4
511 including the provided set of patches. It is however recommend
512 you use the October 24 toolchain snapshot or a more recent version.
514 OR alternatively you can try the following (the Cygnus toolchain is
515 the recommended solution):
517 * GCC and binutils, GAS and GNU LD out of CVS from
518 sources.redhat.com as of August 28, 2000 or later. The CVS tree
519 may require special patches to work properly on the ia64.
521 Configuring and compiling GNU Libc for Linux/ia64
522 =================================================
524 The library requires Linux kernel version 2.4.0-test4-000728 or
525 later to funtion properly. Besides that it support for debug libraries
526 is currently untested. Hence the following options
527 are required for configuring the library:
529 --disable-debug --enable-kernel=2.4.0
531 It is also important that you make sure the library picks up the
532 appropriate kernel header files, if you do not have recent enough
533 kernel headers in /usr/src/linux/include, you should use the
534 --with-headers=<path> option to specify the location.
536 As an example I personally use the following options to configure
537 the library:
539 --disable-debug
540 --disable-cvs
541 --enable-kernel=2.4.0
542 --host=ia64-linux
543 --enable-add-ons=yes
544 --prefix=/usr
545 --with-headers=/home/jes/linux/include
548 Good luck
550 Jes Sorensen <jes@linuxcare.com>,
551 November 14th, 2000
552 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
553 \f
554 Version 2.1.3
556 * bug fixes
558 \f
559 Version 2.1.2
561 * bug fixes
563 \f
564 Version 2.1.1
566 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
568 * New xdr functions are added; some rpc functions are now 64bit clean.
570 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
572 * Fixed known incompatibilities with glibc 2.0.
574 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
576 * Optimized a number of functions (especially the ELF dynamic loader).
578 * Update timezone data files.
580 * lots of charmaps corrections
582 * some new locale definitions and charmaps
584 \f
585 Version 2.1
587 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
588 conform to POSIX member type requirements. Symbol versions have been
589 adjusted as needed within the library, and for direct use by applications,
590 but there is potential for problems if third-party libraries use
591 struct timeval as part of their interface. This does not present
592 a problem for X and other "essential" system libraries.
594 * An additional locale model to support C++ Standard Library locale
595 model and probably more was implemented by Ulrich Drepper.
597 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
598 symbol level.
600 * Miles Bader provided the `argp' function family to support hierachical
601 command line argument parsing, layered on top of getopt.
603 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
605 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
606 numbers.
608 * scanf recognizes the %a and %A format for scanning floating point numbers.
610 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
611 information and interfaces for the available integer types.
613 * about 130 new math functions were added to implement the ISO C9x math
614 library.
616 * the new header <complex.h> contains definitions of the complex math
617 functions from ISO C 9X.
619 * the new header <tgmath.h> defines generic macros to use complex or
620 real valued functions.
622 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
624 * Andreas Jaeger provided a test suite for the math library.
626 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
628 * Ulrich Drepper added character set conversion functions (iconv).
630 * Optimized string functions have been added.
632 * The localedata addon is now part of glibc.
634 * An implementation of profiling shared libraries was added by Ulrich Drepper.
636 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
637 daemon for NSS (nscd).
639 Missing a better place here are some numbers on improvements. Under
640 Linux 2.1.125 un-tar-ing the kernel sources takes
642 user system wall
644 using local files 12.19s 6.88s 22.91s
646 using NIS 13.92s 8.91s 26.34s
648 using NIS & nscd 10.37s 7.34s 25.30s
650 using NIS+ 27.57s 30.37s 640.46s
652 using NIS+ & nscd 10.25s 7.83s 26.51s
654 using NIS & old nscd [1] 13.83s 8.32s 29.60s
656 Keep in mind that non-namelookup related operations dominate above times.
657 It was just a common complain that using NIS+ unpacking the kernel is
658 horribly slow.
660 [1] The old nscd implementation is not available anymore since it was
661 distributed with glibc up to version 2.0.98 and thus is now replaced.
663 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
665 * Mark Kettenis provided a Hesiod NSS module.
667 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
668 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
670 * rcmd can now handle netgroups (Dick Streefland).
672 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
673 Bambrough.
675 * Support for the IPv6 protocol has been added to the socket API, as per the
676 latest draft standards.
678 * Support for Linux 2.2 has been added.
680 * Interface changes relative to the latest 2.0.x release:
681 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
682 addseverity NEW: Unix98
683 alphasort64 NEW: LFS
684 argp_err_exit_status NEW: argp, GNU ext
685 argp_error NEW: argp, GNU ext
686 argp_failure NEW: argp, GNU ext
687 argp_help NEW: argp, GNU ext
688 argp_parse NEW: argp, GNU ext
689 argp_program_bug_address NEW: argp, GNU ext
690 argp_program_version NEW: argp, GNU ext
691 argp_program_version_hook NEW: argp, GNU ext
692 argp_state_help NEW: argp, GNU ext
693 argp_usage NEW: argp, GNU ext
694 authdes_create NEW: Secure RPC
695 authdes_getucred NEW: Secure RPC
696 authdes_pk_create NEW: Secure RPC
697 backtrace NEW: GNU ext.
698 backtrace_symbols NEW: GNU ext.
699 backtrace_symbols_fd NEW: GNU ext.
700 cacos NEW: ISO C 9x
701 cacosf NEW: ISO C 9x
702 cacosh NEW: ISO C 9x
703 cacoshf NEW: ISO C 9x
704 cacoshl NEW: ISO C 9x
705 cacosl NEW: ISO C 9x
706 capget NEW: kernel
707 capset NEW: kernel
708 carg NEW: ISO C 9x
709 cargf NEW: ISO C 9x
710 cargl NEW: ISO C 9x
711 casin NEW: ISO C 9x
712 casinf NEW: ISO C 9x
713 casinh NEW: ISO C 9x
714 casinhf NEW: ISO C 9x
715 casinhl NEW: ISO C 9x
716 casinl NEW: ISO C 9x
717 catan NEW: ISO C 9x
718 catanf NEW: ISO C 9x
719 catanh NEW: ISO C 9x
720 catanhf NEW: ISO C 9x
721 catanhl NEW: ISO C 9x
722 catanl NEW: ISO C 9x
723 cbc_crypt NEW: Secure RPC
724 ccos NEW: ISO C 9x
725 ccosf NEW: ISO C 9x
726 ccosh NEW: ISO C 9x
727 ccoshf NEW: ISO C 9x
728 ccoshl NEW: ISO C 9x
729 ccosl NEW: ISO C 9x
730 cexp NEW: ISO C 9x
731 cexpf NEW: ISO C 9x
732 cexpl NEW: ISO C 9x
733 cimag NEW: ISO C 9x
734 cimagf NEW: ISO C 9x
735 cimagl NEW: ISO C 9x
736 clearerr_locked REMOVED
737 clntunix_create NEW: sunrpc ext
738 clog NEW: ISO C 9x
739 clog10 NEW: ISO C 9x
740 clog10f NEW: ISO C 9x
741 clog10l NEW: ISO C 9x
742 clogf NEW: ISO C 9x
743 clogl NEW: ISO C 9x
744 conj NEW: ISO C 9x
745 conjf NEW: ISO C 9x
746 conjl NEW: ISO C 9x
747 cpow NEW: ISO C 9x
748 cpowf NEW: ISO C 9x
749 cpowl NEW: ISO C 9x
750 cproj NEW: ISO C 9x
751 cprojf NEW: ISO C 9x
752 cprojl NEW: ISO C 9x
753 creal NEW: ISO C 9x
754 crealf NEW: ISO C 9x
755 creall NEW: ISO C 9x
756 creat64 NEW: LFS
757 csin NEW: ISO C 9x
758 csinf NEW: ISO C 9x
759 csinh NEW: ISO C 9x
760 csinhf NEW: ISO C 9x
761 csinhl NEW: ISO C 9x
762 csinl NEW: ISO C 9x
763 csqrt NEW: ISO C 9x
764 csqrtf NEW: ISO C 9x
765 csqrtl NEW: ISO C 9x
766 ctan NEW: ISO C 9x
767 ctanf NEW: ISO C 9x
768 ctanh NEW: ISO C 9x
769 ctanhf NEW: ISO C 9x
770 ctanhl NEW: ISO C 9x
771 ctanl NEW: ISO C 9x
772 des_setparity NEW: Secure RPC
773 ecb_crypt NEW: Secure RPC
774 endutxent NEW: Unix98
775 exp10 NEW: ISO C 9x
776 exp10f NEW: ISO C 9x
777 exp10l NEW: ISO C 9x
778 exp2 NEW: ISO C 9x
779 exp2f NEW: ISO C 9x
780 exp2l NEW: ISO C 9x
781 fattach NEW: STREAMS
782 fdetach NEW: STREAMS
783 fdim NEW: ISO C 9x
784 fdimf NEW: ISO C 9x
785 fdiml NEW: ISO C 9x
786 feclearexcept NEW: ISO C 9x
787 fegetenv NEW: ISO C 9x
788 fegetexceptflag NEW: ISO C 9x
789 fegetround NEW: ISO C 9x
790 feholdexcept NEW: ISO C 9x
791 feof_locked REMOVED
792 feraiseexcept NEW: ISO C 9x
793 ferror_locked REMOVED
794 fesetenv NEW: ISO C 9x
795 fesetexceptflag NEW: ISO C 9x
796 fesetround NEW: ISO C 9x
797 fetestexcept NEW: ISO C 9x
798 feupdateenv NEW: ISO C 9x
799 fflush_locked REMOVED
800 ffsl NEW: GNU ext.
801 ffsll NEW: GNU ext.
802 fgetpos64 NEW: LFS
803 fgets_unlocked NEW: GNU ext.
804 fileno_locked REMOVED
805 fma NEW: ISO C 9x
806 fmaf NEW: ISO C 9x
807 fmal NEW: ISO C 9x
808 fmax NEW: ISO C 9x
809 fmaxf NEW: ISO C 9x
810 fmaxl NEW: ISO C 9x
811 fmin NEW: ISO C 9x
812 fminf NEW: ISO C 9x
813 fminl NEW: ISO C 9x
814 fmtmsg NEW: Unix98
815 fopen64 NEW: LFS
816 fputc_locked REMOVED
817 fputs_unlocked NEW: GNU ext.
818 fread_unlocked NEW: GNU ext.
819 freopen64 NEW: LFS
820 fseeko NEW: Unix98
821 fsetpos64 NEW: LFS
822 fstatfs64 NEW: LFS
823 fstatvfs NEW: Unix98
824 fstatvfs64 NEW: LFS
825 ftello NEW: Unix98
826 ftello64 NEW: LFS
827 ftruncate64 NEW: LFS
828 ftw64 NEW: LFS
829 fwrite_unlocked NEW: GNU ext.
830 gai_strerror NEW: IPv6
831 gamma_r REMOVED
832 gammaf_r REMOVED
833 gammal_r REMOVED
834 getchar_locked REMOVED
835 getdate NEW: Unix98
836 getdate_err NEW: Unix98
837 getdate_r NEW: GNU ext.
838 getmsg NEW: STREAMS
839 getnameinfo NEW: IPv6
840 getnetname NEW: Secure RPC
841 getpmsg NEW: STREAMS
842 getpt NEW: Unix98 PTY
843 getrlimit64 NEW: LFS
844 getutxent NEW: Unix98
845 getutxid NEW: Unix98
846 getutxline NEW: Unix98
847 glob64 NEW: GNU ext.
848 globfree64 NEW: GNU ext.
849 gnu_get_libc_release NEW: GNU ext.
850 gnu_get_libc_version NEW: GNU ext.
851 grantpt NEW: Unix98 PTY
852 host2netname NEW: Secure RPC
853 iconv NEW: iconv
854 iconv_close NEW: iconv
855 iconv_open NEW: iconv
856 if_freenameindex NEW: IPv6
857 if_indextoname NEW: IPv6
858 if_nameindex NEW: IPv6
859 if_nametoindex NEW: IPv6
860 in6addr_any NEW: IPv6
861 in6addr_loopback NEW: IPv6
862 inet6_isipv4mapped NEW: IPv6
863 isastream NEW: STREAMS
864 iswblank NEW: GNU ext.
865 key_decryptsession NEW: Secure RPC
866 key_decryptsession_pk NEW: Secure RPC
867 key_encryptsession NEW: Secure RPC
868 key_encryptsession_pk NEW: Secure RPC
869 key_gendes NEW: Secure RPC
870 key_get_conv NEW: Secure RPC
871 key_secretkey_is_set NEW: Secure RPC
872 key_setnet NEW: Secure RPC
873 key_setsecret NEW: Secure RPC
874 llrint NEW: ISO C 9x
875 llrintf NEW: ISO C 9x
876 llrintl NEW: ISO C 9x
877 llround NEW: ISO C 9x
878 llroundf NEW: ISO C 9x
879 llroundl NEW: ISO C 9x
880 log2 NEW: ISO C 9x
881 log2f NEW: ISO C 9x
882 log2l NEW: ISO C 9x
883 lrint NEW: ISO C 9x
884 lrintf NEW: ISO C 9x
885 lrintl NEW: ISO C 9x
886 lround NEW: ISO C 9x
887 lroundf NEW: ISO C 9x
888 lroundl NEW: ISO C 9x
889 lseek64 NEW: LFS
890 makecontext NEW: Unix98
891 mempcpy NEW: GNU ext.
892 mmap64 NEW: LFS
893 moncontrol REMOVED
894 modify_ldt NEW: kernel
895 nan NEW: ISO C 9x
896 nanf NEW: ISO C 9x
897 nanl NEW: ISO C 9x
898 nearbyint NEW: ISO C 9x
899 nearbyintf NEW: ISO C 9x
900 nearbyintl NEW: ISO C 9x
901 netname2host NEW: Secure RPC
902 netname2user NEW: Secure RPC
903 nexttoward NEW: ISO C 9x
904 nexttowardf NEW: ISO C 9x
905 nexttowardl NEW: ISO C 9x
906 nftw NEW: Unix98
907 nftw64 NEW: LFS
908 open64 NEW: LFS
909 passwd2des NEW: Secure RPC
910 pow10 NEW: GNU ext.
911 pow10f NEW: GNU ext.
912 pow10l NEW: GNU ext.
913 pread NEW: Unix98
914 pread64 NEW: LFS
915 printf_size NEW: GNU ext.
916 printf_size_info NEW: GNU ext.
917 profil_counter REMOVED
918 pthread_mutexattr_getkind_np REPLACED
919 pthread_mutexattr_setkind_np REPLACED
920 ptsname NEW: Unix98 PTY
921 ptsname_r NEW: Unix98 PTY
922 putc_locked REMOVED
923 putchar_locked REMOVED
924 putgrent NEW: GNU ext.
925 putmsg NEW: STREAMS
926 putpmsg NEW: STREAMS
927 pututxline NEW: Unix98
928 pwrite NEW: Unix98
929 pwrite64 NEW: LFS
930 readdir64 NEW: LFS
931 readdir64_r NEW: LFS
932 remquo NEW: ISO C 9x
933 remquof NEW: ISO C 9x
934 remquol NEW: ISO C 9x
935 round NEW: ISO C 9x
936 roundf NEW: ISO C 9x
937 roundl NEW: ISO C 9x
938 rtime NEW: GNU ext.
939 scalbln NEW: ISO C 9x
940 scalblnf NEW: ISO C 9x
941 scalblnl NEW: ISO C 9x
942 scandir64 NEW: LFS
943 sendfile NEW: kernel
944 setcontext NEW: Unix98
945 setrlimit64 NEW: LFS
946 setutxent NEW: Unix98
947 sighold NEW: Unix98
948 sigignore NEW: Unix98
949 sigqueue NEW: POSIX.1b
950 sigrelse NEW: Unix98
951 sigset NEW: POSIX.1b
952 sigtimedwait NEW: POSIX.1b
953 sigwaitinfo NEW: POSIX.1b
954 sincos NEW: GNU ext.
955 sincosf NEW: GNU ext.
956 sincosl NEW: GNU ext.
957 statfs64 NEW: LFS
958 statvfs NEW: Unix98
959 statvfs64 NEW: LFS
960 strcasestr NEW: GNU ext.
961 strtoimax NEW: ISO C 9x
962 strtoumax NEW: ISO C 9x
963 strverscmp NEW: GNU ext.
964 svcauthdes_stats NEW: Secure RPC
965 svcunix_create NEW: sunrpc etx
966 svcunixfd_create NEW: sunrpc ext
967 swapcontext NEW: Unix98
968 tcgetsid NEW: Unix98 PTY
969 tdestroy NEW: GNU ext.
970 tgamma NEW: ISO C 9x
971 tgammaf NEW: ISO C 9x
972 tgammal NEW: ISO C 9x
973 tmpfile64 NEW: LFS
974 trunc NEW: ISO C 9x
975 truncate64 NEW: LFS
976 truncf NEW: ISO C 9x
977 truncl NEW: ISO C 9x
978 umount2 NEW: kernel
979 unlockpt NEW: Unix98 PTY
980 updwtmpx NEW: Unix98
981 user2netname NEW: Secure RPC
982 utmpxname NEW: Unix98
983 versionsort NEW: GNU ext.
984 versionsort64 NEW: GNU ext.
985 waitid NEW: Unix98
986 wcscasecmp NEW: GNU ext.
987 wcsncasecmp NEW: GNU ext.
988 wcsnlen NEW: GNU ext.
989 wcstoimax NEW: ISO C 9x
990 wcstoll NEW: ISO C 9x
991 wcstoull NEW: ISO C 9x
992 wcstoumax NEW: ISO C 9x
993 wcswcs NEW: Unix98
994 wordexp NEW: POSIX.2
995 wordfree NEW: POSIX.2
996 write_profiling REMOVED
997 xdecrypt NEW: Secure RPC
998 xdr_authdes_cred NEW: Secure RPC
999 xdr_authdes_verf NEW: Secure RPC
1000 xdr_cryptkeyarg NEW: Secure RPC
1001 xdr_cryptkeyarg2 NEW: Secure RPC
1002 xdr_cryptkeyres NEW: Secure RPC
1003 xdr_getcredres NEW: Secure RPC
1004 xdr_key_netstarg NEW: Secure RPC
1005 xdr_key_netstres NEW: Secure RPC
1006 xdr_keybuf NEW: Secure RPC
1007 xdr_keystatus NEW: Secure RPC
1008 xdr_netnamestr NEW: Secure RPC
1009 xdr_sizeof NEW: Secure RPC
1010 xdr_unixcred NEW: sunrpc ext
1011 xencrypt NEW: Secure RPC
1012 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1013 \f
1014 Version 2.0.6
1016 * more bug fixes
1018 \f
1019 Version 2.0.5
1021 * more bug fixes
1023 * inet_ntoa is thread-safe
1025 * updwtmp is moved from libutil to libc
1027 * rewrite of cbrt function
1029 * update of timezone data
1030 \f
1031 Version 2.0.4
1033 * more bug fixes
1034 \f
1035 Version 2.0.3
1037 * more bug fixes
1038 \f
1039 Version 2.0.2
1041 * more bug fixes
1043 * add atoll function
1045 * fix complex problems in Berkeley DB code
1047 * fix math functions
1048 \f
1049 Version 2.0.1
1051 * fixed lots of header problems (especially Linux/GNU specific)
1053 * dynamic loader preserves all registers
1055 * Roland McGrath provided support for handling of auxiliary objects in
1056 the ELF dynamic loader.
1058 * support for parallel builds is improved
1059 \f
1060 Version 2.0
1062 * GNU extensions are no longer declared by default. To enable them you
1063 must define the macro `_GNU_SOURCE' in your program or compile with
1064 `-D_GNU_SOURCE'.
1066 * The library has changed from using GNU ld symbol aliases to using weak
1067 symbols where available. The ELF object file format supports weak
1068 symbols; GNU ld also supports weak symbols in the a.out format. (There
1069 is also now support for other GNU ld extensions in ELF. Use the
1070 `--with-elf' option to configure to indicate you have ELF, and
1071 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1072 of many files which contained only symbol aliases, reducing the size of
1073 the source and the compiled library; many other files were renamed to
1074 less cryptic names previously occupied by the symbol alias files.
1075 There is a new header file <elf.h> for programs which operate on
1076 files in the ELF format.
1078 * Converted to Autoconf version 2, so `configure' has more options.
1079 Run `configure --help' to see the details.
1081 * The library can now be configured to build profiling, highly-optimized
1082 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1083 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1084 `configure' enable building these extra libraries. The shared library is
1085 built by default when using both ELF and GNU ld. When shared libraries
1086 are enabled, the new library `-ldl' is available for arbitrary run-time
1087 loading of shared objects; its interface is defined in <dlfcn.h>. The
1088 new header file <link.h> gives access to the internals of the run-time
1089 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1090 application of same name on other systems and it provides information
1091 about dynamically linked binaries.
1093 * The C library now provides the run-time support code for profiling
1094 executables compiled with `-pg'. Programs can control the profiling code
1095 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1096 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1097 the support for this file format was contributed by David Mosberger-Tang.
1099 * The math code has been replaced with a math library based on fdlibm from
1100 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1101 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1102 functions. The math functions now reside in a separate library, so
1103 programs using them will need to use `-lm' their linking commands.
1105 * John C. Bowman contributed optimized ix87 assembler inline functions.
1107 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1108 mechanism similar to that found in Solaris 2. This is now used for the
1109 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1110 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1111 file controls what services are used for each individual database. This
1112 works by loading shared libraries with names specified in `nsswitch.conf',
1113 so service modules can be changed or added at any time without even
1114 relinking any program. Currently there are the file, db, and NIS based
1115 NSS services available.
1117 * The new functions `strtoq' and `strtouq' parse integer values from
1118 strings, like `strtol' and `strtoul', but they return `long long int' and
1119 `unsigned long long int' values, respectively (64-bit quantities).
1121 * The new functions `strtof' and `strtold' parse floating-point values from
1122 strings, like `strtod', but they return `float' and `long double' values,
1123 respectively (on some machines `double' and `long double' are the same).
1125 * Ulrich Drepper has contributed new implementations of the floating-point
1126 printing and reading code used in the `printf' family of functions and
1127 `strtod', `strtof', and `strtold'. These new functions are perfectly
1128 accurate, and much faster than the old ones.
1130 * The implementation of the POSIX locale model was completely rewritten by
1131 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1132 to compile the POSIX locale definition.
1134 * The former dummy implementations of the strcoll and strxfrm function are
1135 now replaced by fully functional code contributed by Ulrich Drepper. The
1136 collation information comes from the POSIX locale definitions.
1138 * The new header <langinfo.h> defines an interface for accessing
1139 various locale-dependent data (using the locale chosen with `setlocale').
1141 * Ulrich Drepper has contributed a new suite of functions for operation on
1142 wide-character and multibyte-character strings, in <wchar.h>;
1143 and classification and case conversion of wide characters, in <wctype.h>.
1144 These new functions are conforming to the ISO C, Amendement 1 specification.
1146 * There is now a second implementation of the standard I/O library available.
1147 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1148 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1150 * You can now use positional parameter specifications in format strings
1151 for the `printf' and `scanf' families of functions. For example,
1152 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1153 ``Number 6, Mr Jones''. This is mainly useful when providing different
1154 format strings for different languages, whose grammars may dictate
1155 different orderings of the values being printed. To support this
1156 feature, the interface for `register_printf_handler' has changed; see
1157 the header file <printf.h> for details.
1159 * The `printf' and `scanf' families of functions now understand a new
1160 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1161 to group numbers as indicated by the locale; for `scanf' and friends, this
1162 says to accept as valid only a number with all the proper grouping
1163 separators in the right places. In the default "C" locale, numbers are
1164 not grouped; but locales for specific countries will define the usual
1165 conventions (i.e. separate thousands with `,' in the US locale).
1167 * The pgrp functions have been regularized, slightly incompatibly but much
1168 less confusingly. The core functions are now `getpgid' and `setpgid',
1169 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1170 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1171 provided for compatibility. There is no longer an incompatible `getpgrp'
1172 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1174 * The new header file <fts.h> and suite of functions simplify programs that
1175 operate on directory trees. This code comes from 4.4 BSD.
1177 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1178 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1179 NSS scheme used in glibc.
1181 * There is a new malloc debugging hook `__memalign_hook'.
1183 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1184 `unsigned int' in <sys/types.h>. These are for compatibility only and
1185 their use is discouraged.
1187 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1188 done differently, so that it works even without GNU ld.
1190 * New function `euidaccess' checks allowed access to a file like `access',
1191 but using the effective IDs instead of the real IDs.
1193 * The time zone data files have been updated for the latest and greatest
1194 local time conventions of the countries of the world.
1196 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1197 see <dirent.h>.
1199 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1200 for formatting floating-point numbers. They are provided only for
1201 compatibility; new programs should use `sprintf' instead. There are
1202 also equivalent function for the `long double' floating-point type and
1203 all functions also exist in a reentrant form.
1205 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1206 functions for maintaining the login-record files (primarily of use to
1207 system programs such as `login'), and convenient functions for
1208 allocating and initializing a pseudo-terminal (pty) device.
1210 * Ulrich Drepper has contributed new support for System V style
1211 shared memory and IPC on systems that support it.
1213 * Ulrich Drepper has contributed several miscellaneous new functions found
1214 in System V: The `hsearch' family of functions provide an effective
1215 implementation of hash tables; `a64l' and `l64a' provide a very simple
1216 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1217 number generator.
1219 * Ulrich Drepper has contributed new reentrant counterparts for the
1220 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1222 * Ulrich Drepper has contributed new, highly-optimized versions of several
1223 string functions for the i486/Pentium family of processors.
1225 * Ulrich Drepper has updated the Linux-specific code, based largely
1226 on work done in Hongjiu Lu's version of GNU libc for Linux.
1227 The GNU library now supports Linux versions 2.0.10 and later,
1228 using the ELF object file format (i[3456]86-*-linux).
1230 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1232 * David Mosberger-Tang and Richard Henderson have ported the C library
1233 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1234 dynamic linking support for ELF/Alpha.
1236 * Richard Henderson contributed several Alpha optimized assembler function
1237 for arithmetic and string handling.
1239 * Ulrich Drepper has contributed a new set of message catalog functions to
1240 support multiple languages using the <libintl.h> interface, for use with
1241 his new package GNU gettext. Translation volunteers have contributed
1242 catalogs of the library's messages in Spanish, German, and Korean.
1244 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1245 program and the `catgets' function for reading the catalog files it
1246 creates. (The <libintl.h> interface is preferred; we include the
1247 <nl_types.h> interface using `catgets' only for source compatibility with
1248 programs already written to use it.)
1250 * New header file <values.h> gives SVID-compatible names for <limits.h>
1251 constants.
1253 * Various new macros, declarations, and small header files for compatibility
1254 with 4.4 BSD.
1256 * New function `group_member' is a convenient way to check if a process has
1257 a given effective group ID.
1259 * When using GCC 2.7 and later, the socket functions are now declared in a
1260 special way so that passing an argument of type `struct sockaddr_in *',
1261 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1262 `struct sockaddr *' type, does not generate a type-clash warning.
1264 * New function `error' declared in header file <error.h> is a convenient
1265 function for printing error messages and optionally exiting; this is the
1266 canonical function used in GNU programs. The new functions `err', `warn',
1267 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1268 doing the same thing.
1270 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1271 POSIX.2 `glob' function to do ~ and {...} expansion.
1273 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1274 `clearenv' which is used in POSIX.9 is also available.
1276 * New function `getsid' returns session ID number on systems that support it.
1278 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1279 files <db.h> and <mpool.h> provide a rich set of functions for several
1280 types of simple databases stored in memory and in files, and <ndbm.h> is
1281 an old `ndbm'-compatible interface using the `db' functions. Link with
1282 `-ldb' to get these functions.
1284 * New macro `strdupa' copies a string like `strdup', but uses local stack
1285 space from `alloca' instead of dynamic heap space from `malloc'.
1287 * New function `strnlen' is like `strlen' but searches only a given maximum
1288 number of characters for the null terminator. `stpncpy', `strndup' and
1289 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1290 function.
1292 * New function `statfs' in header <sys/statfs.h>.
1294 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1295 provide convenient functions for operating on blocks of null-terminated
1296 strings.
1298 * A new suite of functions in <utmp.h> handle all the details of reading
1299 and writing the utmp file.
1301 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1302 Thorsten Kukuk.
1304 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1305 completely POSIX compliant and also implemented the extended functionality
1306 to handle alternate digit representation and alternate era date formats.
1308 * Ulrich Drepper provided an implementation of the `strptime' function
1309 defined in XPG4.2 which transforms a string into a `struct tm' value.
1311 * Paul Eggert provided the tzselect shell script as part of the timezone
1312 code. The shell script makes it easy to select the correct timezone
1313 specification.
1315 * The implementation of the malloc family of functions is completely replaced
1316 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1317 The implementation uses the mmap function (if available) and it is
1318 optimized for the use in multi threaded programs.
1320 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1321 functions. This new functionality is usable by specifying a special
1322 salt string and it is compatible with implementation on *BSD systems.
1324 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1325 `getsubopt' to handle second level command line options, `bsd_signal'
1326 to access BSD style `signal' functionality, the obsolete `regexp' style
1327 expression matcher.
1329 * the `lchown' function is available on system which support this
1330 functionality.
1332 * The implementation of the shadow password handling function was contributed
1333 by Ulrich Drepper.
1335 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1337 * POSIX.1g support was added. The <sys/select.h> header is available,
1338 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1339 implementation of `getaddrinfo'.
1340 \f
1341 Version 1.09
1343 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1345 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1346 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1348 * The new function `daemon' from 4.4 BSD is useful for server programs that
1349 want to put themselves in the background.
1351 * Joel Sherrill has contributed support for several standalone boards that
1352 run without an operating system.
1354 * `printf', `scanf' and friends now accept a `q' type modifier for long
1355 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1357 * All of the code taken from BSD (notably most of the math and networking
1358 routines) has been updated from the BSD 4.4-Lite release.
1360 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1362 * The new functions `getdomainname' and `setdomainname' fetch or change the
1363 YP/NIS domain name. These are system calls which exist on systems which
1364 have YP (aka NIS).
1366 * The time zone data files have been updated for the latest international
1367 conventions.
1369 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1370 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1371 \f
1372 Version 1.08
1374 * The C library now includes support for Sun RPC, from Sun's free
1375 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1376 are included. (There is still no support for YP.)
1378 * Tom Quinn has contributed a port of the C library to SGI machines running
1379 Irix 4 (mips-sgi-irix4).
1381 * The new `lockf' function is a simplified interface to the locking
1382 facilities of `fcntl', included for compatibility.
1384 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1386 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1388 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1389 compatibility.
1391 * The error message printed by `assert' for a failed assertion now includes
1392 the name of the program (if using GNU ld) and the name of the calling
1393 function (with versions of GCC that support this).
1395 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1397 * The library now includes the <sys/mman.h> header file and memory
1398 management functions `mmap', `munmap', `mprotect', `msync', and
1399 `madvise', on systems that support those facilities.
1401 * The interface for `mcheck' has changed slightly: the function called to
1402 abort the program when an allocation inconsistency is detected now takes
1403 an argument that indicates the type of failure. The new function
1404 `mprobe' lets you request a consistency check for a particular block at
1405 any time (checks are normally done only when you call `free' or `realloc'
1406 on a block).
1408 * It is now possible to easily cross-compile the C library, building on one
1409 system a library to run on another machine and/or operating system. All
1410 you need to do is set the variable `HOST_CC' in `configparms' to the
1411 native compiler for programs to run on the machine you are building on (a
1412 few generator programs are used on Unix systems); set `CC' to the
1413 cross-compiler.
1415 * The new function `fexecve' (only implemented on the GNU system) executes
1416 a program file given a file descriptor already open on the file.
1417 \f
1418 Version 1.07
1420 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1421 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1423 * You can set the variable `libprefix' in `configparms' to specify a prefix
1424 to be prepended to installed library files; this makes it easy to install
1425 the GNU C library to be linked as `-lgnuc' or whatever.
1427 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1428 copies a limited number of characters from a string, and returns the
1429 address of the last character written.
1431 * You no longer need to check for whether the installed `stddef.h' is
1432 compatible with the GNU C library. configure now checks for you.
1434 * You can now define a per-stream `fileno' function to convert the
1435 stream's cookie into an integral file descriptor.
1437 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1438 allocates zero bytes of storage, and returns a unique pointer which
1439 you can pass to `realloc' or `free'. The behavior is undefined if
1440 you dereference this pointer.
1442 * The C library now runs on Sony NEWS m68k machines running either
1443 NewsOS 3 or NewsOS 4.
1445 * The new `syscall' function is a system-dependent primitive function
1446 for invoking system calls. It has the canonical behavior on Unix
1447 systems, including unreliable return values for some calls (such as
1448 `pipe', `fork' and `getppid').
1450 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1451 to `EAGAIN', which is the preferred name. On systems whose kernels
1452 use two distinct codes, the C library now translates EWOULDBLOCK to
1453 EAGAIN in every system call function.
1454 \f
1455 Version 1.06
1457 * The GNU C Library Reference Manual is now distributed with the library.
1458 `make dvi' will produce a DVI file of the printed manual.
1459 `make info' will produce Info files that you can read on line using C-h i
1460 in Emacs or the `info' program.
1461 Please send comments on the manual to bug-glibc-manual@gnu.org.
1463 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1465 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1467 * Jason Merrill has contributed a port to the Sequent Symmetry running
1468 Dynix version 3 (i386-sequent-dynix).
1470 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1471 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1473 * New function `memory_warnings' lets you arrange to get warnings when
1474 malloc is running out of memory to allocate, like Emacs gives you.
1476 * The C library now contains the relocating allocator used in Emacs 19 for
1477 its editing buffers. This allocator (ralloc) minimizes allocation
1478 overhead and fragmentation by moving allocated regions around whenever it
1479 needs to. You always refer to a ralloc'd region with a "handle" (a
1480 pointer to a pointer--an object of type `void **').
1482 * There is a new `printf' format: `%m' gives you the string corresponding
1483 to the error code in `errno'.
1485 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1486 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1487 pass, the `a' modifier says to fill in a `char **' you pass with a
1488 malloc'd string.
1490 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1491 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1492 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1494 * `mkstemp' is a traditional Unix function to atomically create and open a
1495 uniquely-named temporary file.
1496 \f
1497 Version 1.05
1499 * The standard location for the file that says what the local timezone is
1500 has changed again. It is now `/usr/local/etc/localtime' (or more
1501 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1503 * The distribution no longer contains any files with names longer than 14
1504 characters.
1506 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1507 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1509 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1510 \f
1511 Version 1.04
1513 * The configuration process has changed quite a bit. The `configure'
1514 script is now used just like the configuration scripts for other GNU
1515 packages. The `sysdeps' directory hierarchy is much rearranged.
1516 The file `INSTALL' explains the new scheme in detail.
1518 * The header files no longer need to be processed into ANSI C and
1519 traditional C versions. There is just one set of files to install, and
1520 it will work with ANSI or old C compilers (including `gcc -traditional').
1522 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1523 MIPS DECStation running Ultrix 4.
1525 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1526 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1527 made itself into a shared library.
1529 * Yet further improved support for the i386, running 4.3 BSD-like systems
1530 (such as Mach 3 with the Unix single-server), or System V.
1532 * New function `strncasecmp' to do case-insensitive string comparison
1533 with limited length.
1535 * New function `strsep' is a reentrant alternative to `strtok'.
1537 * New functions `scandir' and `alphasort' for searching directories.
1539 * New function `setenv' is a better interface to `putenv'.
1541 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1542 function for traversing a directory tree.
1544 * The GNU obstack package is now also part of the C library.
1545 The new function `open_obstack_stream' creates a stdio stream that
1546 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1547 formatted output directly to an obstack.
1549 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1550 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1552 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1554 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1555 things to your strings.
1557 * There are some new test programs: test-fseek, testmb, and testrand.
1559 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1560 These ports are not finished, but are a good starting place for really
1561 supporting those systems.
1563 * `/etc/localtime' is now the standard location for the file that says what
1564 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1565 This follows the general principle that `/etc' is the place for all local
1566 configuration files.
1568 * The C library header files now use `extern "C"' when used by the C++
1569 compiler, so the C library should now work with C++ code.
1571 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1572 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1573 in <strings.h>.)
1575 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1576 function which uses the `merge sort' algorithm, and is said to be
1577 significantly faster than the old GNU `qsort' function. Merge sort is
1578 now the standard `qsort' function. The new algorithm can require a lot
1579 of temporary storage; so, the old sorting function is called when the
1580 required storage is not available.
1582 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1583 provides the Unix `crypt' function, plus some other entry points.
1585 * The code and header files taken from 4.4 BSD have been updated with the
1586 latest files released from Berkeley.
1587 \f
1588 ----------------------------------------------------------------------
1589 Copyright information:
1591 Copyright (C) 1992-1999,2000,2001,2002,2003,2004,2005,2006
1592 Free Software Foundation, Inc.
1594 Permission is granted to anyone to make or distribute verbatim copies
1595 of this document as received, in any medium, provided that the
1596 copyright notice and this permission notice are preserved,
1597 thus giving the recipient permission to redistribute in turn.
1599 Permission is granted to distribute modified versions
1600 of this document, or of portions of it,
1601 under the above conditions, provided also that they
1602 carry prominent notices stating who last changed them.
1603 \f
1604 Local variables:
1605 version-control: never
1606 End: