Annotation of dietlibc/CHANGES, revision 1.357

1.341     fefe        1: 0.22:
1.342     fefe        2:   fix i386 libm
1.343     fefe        3:   fix netinet/ip_icmp.h (Rui Prior)
1.344     fefe        4:   make strings.h susv3 compliant (Gunnar Ritter)
1.345     fefe        5:   remove stdio dependence in abort
1.346     fefe        6:   fix truncate64, ftruncate64 (Luc Van Oostenryck and Yuri Kozlov)
1.347     fefe        7:   fix and improve erand48() (Luc Van Oostenryck)
1.348     fefe        8:   fix realpath for non-existant directories (Gergely Nagy and Gerrit Pape)
1.349     fefe        9:   fix DNS timeout and IPv6 socket reuse
1.350     fefe       10:   strtoul now accepts "-1" as well (Thomas Ogrisegg)
                     11:   add i386 strcasecmp and __ltostr (Thomas Ogrisegg)
1.351     fefe       12:   add killpg prototype (Luc Van Oostenryck)
                     13:   remove some compiler warnings (Luc Van Oostenryck)
                     14:   better rand() from Knuth's TAOCP (Luc Van Oostenryck)
1.352     fefe       15:   fix unified x86_64 unified syscall 64-bit return value issue (Gwenole)
1.353     fefe       16:   the getdents64 emulation was broken and repairing it opened a can of
                     17:     worms.  So I ripped it out.  I also changed the readdir64 emulation
                     18:     to work if there is no getdents64.
1.354     fefe       19:   fix ia64 start.S (Thanks to Volker Birk for an account on his ia64 box)
1.355     fefe       20:   many ia64 fixes (waitpid, nice, fork, vfork, time, utime ...)
1.356     fefe       21:   More fixes from Gwenole (printf %p only printed the last 32 bits, I
                     22:     botched the getdents64 #ifdefs, we violated the x86_64 ABI)
1.357   ! fefe       23:   change signal() to do as glibc does
1.341     fefe       24: 
1.326     fefe       25: 0.21:
1.327     fefe       26:   use gcc's size_t, ptrdiff_t and wchar_t types (Olaf)
                     27:   use -G 8 on MIPS to reduce code size (Johannes Stezenbach)
1.328     fefe       28:   add munlock (Jens Låås)
1.330     fefe       29:   argh, atexit fell victim to bit rot (or maybe Olaf)
1.331     fefe       30:   add WANT_INET_ADDR_DNS to make gethostbyname not look up IP numbers
                     31:     but use them to fill in the struct hostent directly.
1.332     olaf       32:   signal is now a correct signal (Olaf)
1.333     fefe       33:   read optimizer cflags for diet -Os gcc from ~/.diet/gcc, overriding
                     34:     the built-in defaults.
1.334     fefe       35:   add file "SECURITY".  I will document design tradeoffs that have
                     36:     security implications there.
1.335     fefe       37:   fixed regex LINEEND condition
1.336     fefe       38:   add .size directive to i386 syscalls
1.337     fefe       39:   shove a few more bytes off the i386 socket calls
1.339     fefe       40:   setjmp, longjmp and clone for x86_64 are now implemented but not tested (Olaf)
1.340     fefe       41:   fix sparc signals
1.326     fefe       42: 
1.319     fefe       43: 0.20:
1.325     fefe       44:   calloc was botched
1.320     fefe       45:   umount and stime for x86_64 (Gwenole Beauchesne)
1.321     fefe       46:   some malloc fixes for very big numbers (Enrico Scholz, me)
1.322     fefe       47:   x86_64 unified syscall did not preserve rbx violating ABI (Gwenole)
1.323     fefe       48:   realpath fix if path did not contain a slash (Gwenole)
1.324     fefe       49:   add ucontext
1.329     fefe       50:   add asm/statfs.h to work around people using <linux/fs.h>
1.319     fefe       51: 
1.308     fefe       52: 0.19:
                     53:   current gcc cvs makes __thread a keyword (Eric Troan)
1.316     fefe       54:   be more strict regarding hostile DNS packets (me)
1.312     fefe       55:   fix ia64 compile problems (Gerrit Pape)
1.311     fefe       56:   make killpg a function and not a macro (broke bash 2.05b)
1.313     fefe       57:   fix ia64 start code and unified syscall (me)
1.314     fefe       58:   add sparc/strlen.S from Thomas Ogrisegg
                     59:   add more space to ARM __jmp_buf in setjmp.h (Andre)
1.315     fefe       60:   fix libcompat/syscall.S (did't compile on arm)
1.316     fefe       61:   add integer overflow fix in xdr_array after bugtraq advisory (me)
1.317     fefe       62:   fix x86_64 socket calls and mmap (and some more) (Gwenole Beauchesne)
                     63:   add calloc integer overflow fix after RUS-CERT advisory (me)
1.318     fefe       64:   add fread and fwrite integer overflow fix (me)
1.308     fefe       65: 
1.281     fefe       66: 0.18:
1.282     fefe       67:   add stpcpy (from Thomas Ogrisegg)
                     68:   check in mktime fix (from Luc Van Oostenryck)
1.283     fefe       69:   add libm2.s from contrib to i386 (oops, how long has it been sitting
                     70:     there?)
1.284     fefe       71:   add truncate64 and ftruncate64 and prototype for truncate (only had ftruncate)
1.285     fefe       72:   Michal Ludvig ported the diet libc to the x86_64 architecture (the
                     73:     upcoming AMD Hammer chips!).  You can't even buy the chips yet and
                     74:     the diet libc already supports it!  Amazing ;-)
                     75:   Michal's patch also fixed several of the outstanding warnings.  Thanks!
1.286     fefe       76:   Andre sent a patch to add ARM profiling.  He says it does not work
                     77:     yet, but it's a start.
1.287     fefe       78:   added getdents64 backwards compatibility and include it in large file
                     79:     support #defines
1.288     fefe       80:   perror now checks if the message is NULL like glibc (Thomas Ogrisegg)
1.289     fefe       81:   ftell did not take ungetc into account (Kevin Ryde through Debian).
1.290     fefe       82:   Thomas Ogrisegg sent a port to IA64!
1.291     fefe       83:   sigaddset, sigdelset and setismember segfaulted for signal 0 (Gunnar Ritter)
1.292     fefe       84:   Enrico Scholz reported several bugs in the header files.
                     85:   change __malloc__ to __attribute_malloc__
1.293     fefe       86:   add pa-risc socketcall (but see TODO) (Felix J. Ogris)
1.294     fefe       87:   fix *rand48 initialization (Kevin Ryde)
                     88:   fnmatch infinite loop fix (Piotr Esden-Tempski)
1.295     fefe       89:   make signal() into a sigaction wrapper function
1.296     fefe       90:   add memrchr (Emil)
1.297     fefe       91:   remove __attribute__((const)) from getpid() (Yuri Kozlov)
1.298     fefe       92:   make getserv* also work if proto is NULL (Jens Låås)
1.299     olaf       93:   now clone on parisc works (Thomas Ogrisegg)
1.300     fefe       94:   getopt* fix from Thomas Walpuski
1.301     fefe       95:   add syscall() to libcompat (Thomas Ogrisegg)
1.302     fefe       96:   fix strncpy and strrchr i386 assembly versions for dynamic linking
1.310     fefe       97:     (John K. Hohm)
1.302     fefe       98:   allow short option grouping in getopt* (Ralf Wildenhues)
1.303     fefe       99:   make the DNS resolver IPv6 transport capable (WANT_IPV6_DNS)
1.304     fefe      100:   mention -v in diet.1 (Bryan Henderson)
1.305     fefe      101:   auto-detect gcc 3 on i386 and remove compiler option warnings
1.306     fefe      102:   putenv tweak (Thomas Ogrisegg)
                    103:   add missing socket syscalls for PA-RISC and IA64 (Thomas Ogrisegg)
                    104:   add cpio.h and tar.h (Thomas Ogrisegg)
                    105:   change opendir/readdir/closedir from malloc to mmap (Thomas Ogrisegg)
1.307     fefe      106:   cleanups from Florian LaRoche
1.281     fefe      107: 
1.264     fefe      108: 0.17:
1.265     fefe      109:   fix several bugs in getservent_r
1.266     fefe      110:   Gunnar Ritter reported the following:
                    111:     moved tcgetpgrp and tcsetpgrp to unistd.h
                    112:     adjusted lstat->lstat64 #define to make it work with function pointers
                    113:     move __dietlibc__ #define from features.h to diet
1.267     fefe      114:   Thomas Ogrisegg sent x86 memccpy and strncpy routines and introduced
                    115:     an dietfeatures.h #define WANT_FULL_POSIX_COMPAT
1.268     fefe      116:   Thomas also sent me profiling support (so far only on x86, but
                    117:     profiling/PORTING describes what needs to be done for other
                    118:     architectures)!
1.272     fefe      119:   add contrib/dprof.c, also from Thomas.
1.269     fefe      120:   Andreas Krennmair sent a patch to add the BSD regex interface to
                    121:     libcompat
1.271     fefe      122:   Andre noticed that __dtostr never sets first to false.  Oops!
1.274     fefe      123:   Andre has provided a largely untested patch that seems to fix the problem.
1.275     fefe      124:   Igor Gilitschenski sent a patch for the "%8.7lx" issue.
1.276     fefe      125:   abort did not flush all stdio streams
1.277     fefe      126:   fix some nasty regular expression bugs
                    127:   write a stupid malloc checker (contrib/debug-realloc.c) to help me
                    128:     debug my regular expressions.  Please read contrib/debug-realloc.txt
1.278     fefe      129:   our i386 memchr,memcmp were broken for the count=0 case
1.279     fefe      130:   fix DNS domain search
1.280     fefe      131:   i386 memccpy exchanged esi and edi :-(  I should do more checks before
                    132:     accepting external code...
1.264     fefe      133: 
1.244     fefe      134: 0.16:
                    135:   "diet -v" or "diet -Os" segfaulted without further arguments.
1.246     fefe      136:   Andre found two very embarassing bugs in my four lines of md5 glue.
                    137:     I need to get more sleep.
1.247     fefe      138:   Thanks Ogrisegg found that ptrace does not work as documented and
                    139:     provided a wrapper that emulates the glibc behaviour.
1.248     fefe      140:   Dirk Engling saved 8 bytes and 4 cycles in the ARM clone()
                    141:   fix ptrace.h for S/390 and ARM
                    142:   provide a PORTING document so we don't lose track of which file need
                    143:     to be touched to port the diet libc to a new platform.
1.249     fefe      144:   remove a few warnings
                    145:   provide a prototype for usleep.
1.250     fefe      146:   make __dtostr work on ARM by using long instead of long long.
                    147:     Idea by Dirk Engling.
1.251     fefe      148:   fix an argument counting bug in *scanf (Thomas Ogrisegg)
1.252     fefe      149:   Forgot an #endif in asm/sigcontext.h (Mike Castle)
1.253     fefe      150:   Kurt Garloff sent in patches to
                    151:     fix struct termios on non-x86 architectures
1.254     fefe      152:   printf("%+05d\n",500) was broken (Raimar Falke told me, Olaf fixed it)
                    153:   create libcompat.a (and move daemon to it)
1.255     fefe      154:   add getdelim and getline
                    155:   *printf now recognize 'z' integer flag (and ignore it)
1.256     olaf      156:   Dirk Engling provided a strcpy.S for ARM.
1.257     olaf      157:   Olaf: fixed *scanf familie. It hadn't wored with "long long".
1.258     fefe      158:   Hans Lermen fixed i386/getenv.S
1.259     fefe      159:   diet -Os no longer discards -fpic and -fno-pic
1.260     fefe      160:   fix i386 rand/random to use correct RAND_MAX (thanks, Jaroslav
                    161:     Macodiseas)
1.261     fefe      162:   sys/ipc.h now includes sys/types.h
1.262     olaf      163:   Olaf: started to make the sparc64 port
1.263     fefe      164:   scandir should not sort if compar() is NULL (reported by Andrea Marrosu)
1.244     fefe      165: 
1.224     fefe      166: 0.15:
1.225     fefe      167:   vfork sucks.  I reverted to the old behavior where vfork==fork.
1.226     fefe      168:   fix bsearch (and remove i386 assembly bsearch, needs to be redone).
1.227     fefe      169:   Thanks Ogrisegg sent a patch to make the PA-RISC unified syscall
                    170:     thread-safe!
1.228     fefe      171:   remove vfork and add alarm to dynamic syscalls.
                    172:   fix diet-dyn to link in dyn_dstop.o and not dyn_stop.o.
1.229     fefe      173:   The MD5 code generated unaligned accesses when passed an unaligned
                    174:     pointer on little endian ARM and MIPS.
                    175:   MIPS unified syscall didn't compile anymore.
                    176:   Put up new mipsel target to cross compile for little endian mips.
                    177:   The mips target will again explicitly set endianness to big endian.
                    178:   Compiling natively on a MIPS box should not touch the endianness.
1.230     fefe      179:   Duh, when we removed return0, we broke tzset when the time zone parser
                    180:     was disabled.  Uwe Ohse noticed this.  Thanks!
                    181:   Fix gethostbyname to match host names case insensitively in /etc/hosts.
                    182:     Oops, this was reported 6 weeks ago but I overlooked the email.
                    183:     Thanks, Denis Rachal!
1.231     fefe      184:   vsnprintf's zero termination was broken.
1.233     fefe      185:   Uwe Ohse found a few more bugs:
                    186:     Remove WANT_BUGGY_GLIBC_STRSEP.  The Linux man page is broken, glibc
                    187:       does it correctly.
                    188:     Make inet_aton use strtoul instead of strtol
                    189:     fdopen would close the file descriptor if it could not malloc the
                    190:       buffer.
                    191:     strftime updates.
                    192:     Make _FILE_OFFSET_BITS includes -Wundef clean
                    193:   Andre found a typo in endian.h for big endian mips
1.234     fefe      194:   Ryan told me that fmod was not included in libm.  Oops.
1.235     fefe      195:   strstr(whatever,"") returned NULL, not whatever.  Found by a new test
                    196:     suite entry for strstr that I wrote.
1.245     fefe      197:   Thomas Ogrisegg suggested or sent patches for the following:
1.236     fefe      198:     add <asm/sigcontext.h> for profiling support.
                    199:     make strncpy a #define in string.h to save a few bytes.
1.241     fefe      200:     an i386 assembler getenv implementation (roughly half the size)
                    201:     add grantpt, ptsname, unlockpt
1.236     fefe      202:   add a getenv test suite entry.
1.238     fefe      203:   Andre contributed an ARM assembler md5 implementation and he fixed mmap
                    204:     on ARM.
                    205:   add glibc macro names in sys/reboot.h.  Mentioned by Laurent G. Bercot
1.239     fefe      206:   getservent_r did not parse lines without aliases.  Thanks, Jaroslav
                    207:     Macodiseas!
1.240     fefe      208:   fix MIPS start code (argv[0] was always corrupt)
1.241     fefe      209:   removed annoying -Wconversion gcc switch
1.242     fefe      210:   add -v to diet.c and fix MIPS CFLAGS in diet.  Thanks, Johannes Stezenbach
1.243     fefe      211:   Kurt Garloff sent these diffs:
                    212:     add fdatasync (and make it a pthread cancellation point)
                    213:     numerous alpha issues, like using .quad instead of .long for
                    214:     offsets, change strip to -strip in Makefile (so a failing strip does
                    215:     not abort the make), try to be more friendly to the gcc 2.96 that
                    216:     SuSE 7.1 AXP ships with.
1.224     fefe      217: 
1.209     fefe      218: 0.14:
1.224     fefe      219:   fix brk again (missing __brk, trivial oversight)
1.210     fefe      220:   a new i386/atol.S that is 4 bytes smaller (and faster, too!).  Thanks,
                    221:     Thomas Ogrisegg!
1.211     fefe      222:   Thomas also contributed a PA-RISC port including testandset, so
                    223:     libpthread will work once we implement clone!  Great work, Thomas.
1.212     fefe      224:   made the fake locale more believable.
                    225:   If you need gettext, use http://www.ca.postgresql.org/~petere/gettext.html
1.213     fefe      226:   moved _exit into the unified syscall on x86.
1.214     fefe      227:   Uwe Ohse found many more bugs:
                    228:     getpass EINTR handling, ttyname, sysconf_cpus with SLASH_PROC_OK,
                    229:     liblatin1 was more or less completely broken if you gave it chars as
                    230:     arguments, not ints (signedness).  execvp had a buffer overflow in
                    231:     case a PATH element exceeded PATH_MAX, but it's not a security
                    232:     problem since setuid programs need to set their path to some known
                    233:     value anyway.
1.219     fefe      234:     hasmntopt did not work with foo=bar style options
1.217     fefe      235:   Uwe also improved ftw's stack usage.
1.214     fefe      236:   Put movl instead of popl rationale in comment in i386/unified.S since
                    237:     three people have suggested saving a few bytes with popl now ;)
1.215     fefe      238:   I discovered __attribute__((malloc)) and started using it.  For gcc 3,
                    239:     it improves the optimizer when functions return malloced pointers.
1.216     fefe      240:   Steven Rostedt pointed out that my setvbuf was broken with regard to
                    241:     size==0 and sent a patch to fix it.
1.218     fefe      242:   Thomas Ogrisegg made setenv smaller.
1.220     olaf      243:   Olaf: implemented the parisc clone and an atomic testandset, modified the
                    244:     libpthread to respect the parisc UPgrowing stack. still non functional,
                    245:     because the unified syscall uses errno :(
1.221     fefe      246:   tcgetospeed read from the wrong termios field.  Thanks, Gunnar Ritter!
1.222     fefe      247:   Fixed asprintf (relied on vsnprintf(NULL,...) to return length but
                    248:     don't write anything which was no longer the case.  It also
                    249:     allocated one byte unnecessarily, which Uwe Ohse found.
1.223     fefe      250:   Fix ttyname (readlink does not \0-terminate, forgot to do that).
1.209     fefe      251: 
1.193     fefe      252: 0.13:
1.194     fefe      253:   add readdir64 and automatic mapping if _FILE_OFFSET_BITS == 64
1.199     fefe      254:   make diet not include the linker safeguard stuff when preprocessing
1.207     fefe      255:   Olaf: port to S/390!
1.196     leitner   256:   me: fix vfork (it was put into dietlibc.a twice)
1.197     leitner   257:   res_query did not initialize last
1.199     fefe      258:   diet (not diet-dyn, of course) now adds -static to the gcc command line
1.198     leitner   259:   fixed fflush on input streams (tic from ncurses exposed this)
1.199     fefe      260:   duh, there is an alarm system call, too, so we use it and not setitimer
1.200     fefe      261:   fix comparison in gmtime_r that caused Jan 1 to be converted to Dec 32.
1.201     fefe      262:   rewrote __dtostr (it also has one more argument now)
1.205     fefe      263:   Thanks to Erik Troan for bringing these to my attention:
1.204     fefe      264:     make putenv behave like glibc (putenv("HOME") == unsetenv("HOME"))
                    265:     fix strncat for the case where n == 0 (security implications?)
                    266:     fix bsearch (it didn't find the very last element in the array, same
                    267:       bug in both the C and the i386 assembly version).
1.205     fefe      268:     fixed FNM_PATHNAME in fnmatch
1.204     fefe      269:   fix brk (the syscall was documented incorrectly in the Linux man page)
                    270:     Thanks, Thomas Ogrisegg!
1.205     fefe      271:   added negated character classes to fnmatch (not required by POSIX)
1.206     fefe      272:   make the utmp routines open utmp read-only if read-write doesn't work.
1.208     fefe      273:   remove syscalls.c directory, it is obsolete now with unified syscalls
1.193     fefe      274: 
1.164     fefe      275: 0.12:
                    276:   more contributions from Frank Klemm.
1.165     fefe      277:   iconv can now do UCS-2, too.
1.167     fefe      278:   Imported several x86 assembly routines from Wouter van Kleunen.
1.166     fefe      279:   Lots of bug fixes, and several more i386 specific versions of common
                    280:     routines to make them smaller.
1.168     fefe      281:   add memmem (a GNU extension that looks useful)
1.170     fefe      282:   several changes from Michal Ludvig: inttypes.h gets C99 macros,
1.168     fefe      283:     add pivot_root syscall, %n for *scanf.
1.169     fefe      284:   add adjtimex (thanks, Laurent BERCOT)
1.171     fefe      285:   add Frank Klemm's optimized md5
1.172     fefe      286:   add -Os option to diet (see diet.1).
1.173     fefe      287:   several IPv6 constants and HZ were missing, thanks Johannes Kloos.
1.174     fefe      288:   add 32-bit uid/gid syscalls.
1.175     fefe      289:   add rand48 (thanks, Johannes Kloos)
1.176     fefe      290:   fixed a lot of bugs in getopt* (thanks, Johannes)
1.177     fefe      291:   add strxfrm and tweak limits.h.  glib-1.3.8 now compiles without changes.
                    292:   add a few more module syscalls.  modutils-2.4.9 now compiles without changes.
                    293:   fix gethostent alias list termination.  Major oops.
1.178     fefe      294:   add execle and two DNS constants (from Johannes Kloos).
1.179     fefe      295:   opendir did not close-on-exec (thanks, Laurent Bercot).
1.180     fefe      296:   DNS will now properly signal errors and set h_errno.
                    297:   A few more cleanups (thanks, Andreas Jabs and Matthias Andree).
1.181     fefe      298:   Added an uber-cool linker safeguard feature!  Idea by Matthias Andree.
                    299:     If you enable WANT_SAFEGUARD in dietfeatures.h, diet will include an
                    300:     external reference to a symbol that is only in the diet libc.  So,
                    301:     when you accidentally link a diet libc compiled object file against
                    302:     glibc, the linker will barf.  This will bloat your object files, but
                    303:     you can remove all the references with "strip -R .note" from
                    304:     the binaries in the end (which you should do anyway).
1.182     fefe      305:   fix ARM unified syscall (select did not work).
1.183     fefe      306:   add getpwent_r ala glibc and replace getpwent
                    307:   do the same for getgrent and getspent
                    308:   remove entlib (new code is smaller)
1.184     fefe      309:   rewrite getserv* to use parselib (and provide ..._r, too)
1.185     fefe      310:   add getpwnam_r and getpwuid_r
1.186     fefe      311:   rewrite getproto* to use parselib (and protive ..._r, too)
1.187     fefe      312:   Olaf muddled with the dynamic linker.  It's a clean-room
                    313:     implementation in the sense that it once worked for Olaf in a clean
                    314:     room ;)
1.188     fefe      315:   add if_nameindex and if_freenameindex.
                    316:   fixed arm unified syscalls to work with current binutils (; is no
                    317:     longer a line separator but starts a comment, switched to .macro)
1.189     fefe      318:   changed all st_[cma]time types to signed long so comparisons against
                    319:     LONG_MIN will work correctly.  (GNU tar does this)
1.190     fefe      320:   fixed two bugs regarding ungetc.
                    321:   add getusershell, setusershell, endusershell (for vs_ftpd)
                    322:   add prctl, dirfd (also for vs_ftpd)
1.191     fefe      323:   fixed strftime (was completely hosed)
1.192     fefe      324:   added real make install target
1.164     fefe      325: 
1.115     fefe      326: 0.11:
                    327:   fix major oops in DNS routines (only with WANT_FULL_RESOLV_CONF enabled).
1.116     fefe      328:   fix vsscanf bug (Thanks, David Chappell).
1.117     fefe      329:   add floor, ceil and memchr prototypes.
                    330:   add __builtin_expect and expect #defines for gcc versions below 3.0
1.118     fefe      331:   cleaner errno vs __errno_location handling
                    332:   add placeholder iconv (iconv_open will always return EINVAL)
                    333:   try to remove kernel 2.4 header dependency in IPv6 sockaddr_in6
                    334:     initialization of getaddrinfo.
1.119     fefe      335:   fix vsnprintf %X (printed lower case)
1.120     fefe      336:   I wrote a new getopt.  It appears to actually work (it is POSIX
                    337:     compliant, it does not sort argv like the GNU version) and is only
                    338:     a little over 300 bytes on x86.
1.121     fefe      339:   Guillaume Cottenceau just wrote me that strncat should be even more
                    340:     broken than it already is: it should append n bytes AND THEN \0!
                    341:     I wonder how many programmers have produces off-by-one errors here...
1.122     fefe      342:   Fix regexec offset return.  autoconf now believes that diet libc has
                    343:     POSIX regular expressions.
1.123     fefe      344:   Fix fnmatch (a/b/* matched a/b/c/d even if FNM_PATHNAME was set)
1.124     fefe      345:   Fix regular expression match for x* when there is no x at all.
1.125     fefe      346:   Fix memory leak in error case in gethostbyname(2|).  Thanks, Dietz Pröpper.
1.126     fefe      347:   Add %h to vsnprintf.
1.127     fefe      348:   Add FAQ.
1.128     fefe      349:   Make %h work for signed numbers and add %hh to vsnprintf.
                    350:   initgroups ignored the group argument :-(
                    351:   remove printf references and nested functions from glob.
1.129     fefe      352:   added an errno in libpthread that will display a prominent linker
                    353:     warning.
1.131     fefe      354:   started getting rid of kernel headers.  Big task! :-(
1.130     fefe      355:   add res_mkquery.  The diet libc can now compile and link mtr.
1.132     olaf      356:   Olaf: added a lot of code in libdl (not yet complete), changed the
                    357:     startup code to make it work with his libdl and ld.so (needs still work
                    358:     too)
1.134     fefe      359:   __dns_readstartfiles only took the first domain or search path.
                    360:     Thanks, Anthony de Boer
1.133     olaf      361:   Olaf: added clone and a new unified_syscall for PowerPC
                    362:     also dynlinker is now available (i386 only at this time)
1.135     fefe      363:   crufted together a stdarg.h implementation from the various gcc headers.
1.136     fefe      364:   implement getopt_long (ugh, the GNU people need professional help)
1.137     fefe      365:   fixed word delimiters in regex (they looked for space, i.e. "," did
                    366:     not work as delimiter)
1.138     fefe      367:   errno.h now declares sys_errlist and sys_nerr.
1.143     fefe      368:   added mkdtemp.
1.142     fefe      369:   Uwe Ohse reported all of the following bugs:
                    370:     ttyname should return 0 if !isatty.
                    371:     realpath returns NULL if "." cannot be opened
                    372:     putenv erroneously accepted (and mishandled) entries without "=".
                    373:     popen returned 255 instead of 127 if /bin/sh could not be run.
                    374:     fgetc did not set the internal EOF indicator on EOF.
                    375:     bsearch contained an assumption about integer arithmetic overflow
                    376:       behavior.
                    377:     system did not set SIGCHLD and thus contained a race.
                    378:     popen did not set close-on-exec and could leak an fd on malloc error.
1.147     fefe      379:     daemon did not check whether open returns an fd below 3
                    380:     perror did not save errno.
1.144     olaf      381:   Olaf: Peter Jones reported some problems with perror; strerror had the
                    382:     same problem.
                    383:     Peter also posted a patch to atexit/exit. With some modifications it is
                    384:     now implemented.
1.145     fefe      385:   Unbuffered stdio and ungetc can no longer be disabled.  I will try to
                    386:     implement part of it using ELF weak symbols.
1.146     fefe      387:   Added minimal sysconf (tehe) from David Chappell.
1.148     fefe      388:   Added overflow handling for strtoul and strtol.
1.149     fefe      389:   Added WANT_ETC_HOSTS in dietfeatures.h and made gethostbyname/2 use
                    390:     it before falling back to DNS if enabled.
1.150     fefe      391:   Added a littie backwards compatibility cruft for gpm (man, do these
                    392:     sources stink!)
1.151     fefe      393:   Added openpty.
1.152     fefe      394:   Squeeze a few bytes off the is* routines, courtesy of Peter Jones.
1.154     fefe      395:   Fix fseek return value.
1.155     fefe      396:   Add dirname and basename.
1.156     fefe      397:   Add a few i386 math routines contributed by Frank Klemm.
1.157     fefe      398:   Fixed getservent (did not allow _ and - in the aliases).
                    399:     Thanks, Oden Eriksson
1.158     fefe      400:   Added a float.h so configure believes we have ANSI header files.
                    401:   Fix a lot more stdio bugs that Uwe Ohse pointed out.
1.162     fefe      402:   Olaf: has added a new scanf and printf core that is suitable for all
1.159     olaf      403:     scanf and printf function implementations
1.160     fefe      404:   Imported a few more functions and optimizations from Frank Klemm (he
                    405:     also rewrote dtostr to have more precision)
1.161     olaf      406:   Olaf: checked in a new sig* function family (based on rt_sig*).
                    407:     legacy <2.2 signal-handling doesn't work at the moment.
1.163     fefe      408:   Made rudimentary iconv that can convert back and forth between
                    409:     iso-8859-1, utf-8 and ucs-4 (for debugging).
                    410:     Thanks to Markus Kuhn for the excellent utf-8(7)!
1.115     fefe      411: 
1.74      fefe      412: 0.10:
                    413:   update getpagesize.
                    414:   add personality.
1.75      fefe      415:   add "%*s" and "%*.*s" support to vsnprintf.
1.76      fefe      416:   add putchar (apparently arm-linux-gcc will substitute printf("\n")
                    417:     with putchar('\n') behind your back...?!
1.77      fefe      418:   import include/scsi/ from glibc.
1.78      fefe      419:   add iopl.
1.80      fefe      420:   add execl and sigdelset prototypes.
                    421:   add getopt_long stuff to getopt.h (may compile but won't link).
1.81      fefe      422:   add RPC headers (no code yet).
1.82      fefe      423:   add mlockall, munlockall
1.83      fefe      424:   make "diet gcc foo.c" work.
                    425:   added Sun RPC code and removed as many warnings as possible in a
                    426:     heroic act of self-mutilation.
                    427:   added getproto* and getdtablesize for the RPC cruft :-(
1.84      fefe      428:   added getpass.  mount from util-linux actually compiles now!
                    429:   fix the sig*set routines.  mount actually works now *bg*
                    430:   fix fwrite dividing by zero when trying to fwrite n records of size 0.
1.85      fefe      431:   added an initial regex implementation (3500 bytes!!!).
1.87      fefe      432:   add llseek and lseek64 with optional lseek fall-back.
1.88      fefe      433:   add res_init.
                    434:   add asprintf (ugh, what an ugly function).
1.89      fefe      435:   expanded arpa/nameser.h to include backwards compatibility defines
1.90      fefe      436:   add ut_name alias to ut_host in struct utmp.
                    437:   add inet_ntop, inet_pton, gethostbyname2.
1.92      fefe      438:   add sysinfo, recvmsg, sendmsg.
1.93      fefe      439:   add endmntent, getmntent, setmntent.
1.94      fefe      440:   fix fnmatch (thanks, Guillaume Cottenceau!)
1.96      fefe      441:   add setenv.
                    442:   remove __restrict from mntent.h, add __restrict__ removal alias for
                    443:     older gcc versions in sys/cdefs.h.
                    444:   add rlim_t, sig_atomic_t declarations.
                    445:   add sigsetjmp #define for __sigsetjmp (oops).
                    446:     (Thanks to Chris Siebenmann for these three bug reports)
1.97      fefe      447:   add a gruesome hack to printf floating point to accept %f and kludge
                    448:     together support for %.2f.  Don't look at the code, please!
1.98      fefe      449:   fixed tcsetpgrp (oops, this is embarassing!  Thanks, Chris Siebenmann)
1.99      fefe      450:   imported fix for entlib by Jeff Garzik.
1.100     fefe      451:   add glob implementation from Guillaume Cottenceau (Thanks!!)
                    452:   add libdl fragments from Olaf (Yeah!  One step closer to dynamic linking!)
1.101     fefe      453:   add REG_ICASE and word start/end handling to my regular expressions.
                    454:   my regular expressions now actually match substrings (i.e. "foobar" to "bar").
1.102     fefe      455:   wrap getcwd to comply to man page (the syscall returns the number of
                    456:     bytes, not the buffer)
                    457:   add realpath.
1.103     fefe      458:   fix vfprintf.
1.104     fefe      459:   fix *scanf %s zero termination.
                    460:   add abs, labs, llabs.
1.105     fefe      461:   add <sys/io.h>, ioperm syscall.
                    462:   add flock to <sys/file.h>
1.106     fefe      463:   fixes to bsearch and the regular expressions.
1.107     fefe      464:   add fake herror.
1.108     fefe      465:   add scandir and alphasort.
1.109     fefe      466:   add killpg
1.110     fefe      467:   implemented a gross hack to make libpthread compile when
                    468:     dietfeatures.h does not define WANT_THREAD_SAFE (it's empty then).
1.111     fefe      469:   add getaddrinfo and freeaddrinfo (man, what a fucked up interface!)
1.112     fefe      470:   fix sigsuspend (syscall had completely fscked up arguments!)
1.113     fefe      471:   RLIM_INFINITY from the kernel is broken.  Thanks to Chris Siebenmann
                    472:     for sending a patch.
1.114     fefe      473:   add getserv*.
                    474:   add WANT_FULL_RESOLV_CONF so that the DNS routines use "domain" and
                    475:     "search" from resolv.conf.
1.74      fefe      476: 
1.73      fefe      477: 0.9:
1.65      fefe      478:   fixed initgroups (oops)
1.66      fefe      479:   Cleanup appending file open for stdio (thanks, James Antill)
                    480:   imported vfprintf fix from James Antill.
1.67      fefe      481:   add fnmatch
                    482:   change index, rindex and bcmp as weak ELF symbols (were #defined before)
1.68      fefe      483:   Olaf added character classes to *scanf.
1.69      fefe      484:   Put object and library files into a separate directory (bin-$ARCH).
                    485:   Add "cross" make target to make all architectures.
                    486:   Add "diet" program and man page.
1.70      fefe      487:   Add getgrnam, getgrgid
1.71      fefe      488:   Add cfmakeraw (Thanks, Antonio Musumeci)
1.72      fefe      489:   localtime won't call gettimeofday when the tzfile parser is used.
1.65      fefe      490: 
1.64      fefe      491: 0.8:
1.34      fefe      492:   vsnprintf(0,...) estimated the length of strings with a padding width
                    493:     incorrectly.
1.35      fefe      494:   new reboot() from Olaf.
1.36      fefe      495:   added prototypes for getsockopt and setsockopt.
1.39      fefe      496:   added experimental sem* and shm*
1.38      fefe      497:   define EXIT_SUCCESS and EXIT_FAILURE
1.40      fefe      498:   added setvbuf (only changes mode, not buffer)
1.41      fefe      499:   added dietwarning.h (woohoo, linker warnings!) and used it to warn of
                    500:     insecurity (system, sprintf) or bloat (printf and stdio).
1.42      fefe      501:   added qsort() and bsearch().  Benchmark on 1000 random ints:
                    502:     glibc: 679414 cycles qsort and 3352 cycles bsearch
                    503:     diet libc: 300010 cycles qsort, 553 cycles bsearch
                    504:     I have no idea why glibc is so slow.
1.43      fefe      505:   added __isnan (references by libm.a from glibc).
                    506:   added popen() and pclose().  Now the diet libc can link slsh (from
                    507:     S-Lang!)
1.44      fefe      508:   corrected usleep.  It was more of an msleep until now.
1.45      fefe      509:   corrected __dtostr (it looped when trying to format "0.0").
                    510:   several fixes to stdio (thanks to S-Lang's excellent test suite!)
1.46      fefe      511:   added ungetc (does it work?)
1.47      fefe      512:   added inet_aton (yuck!)
1.50      fefe      513:   added gethostbyname, gethostbyaddr, gethostbyname_r and gethostbyaddr_r
1.48      fefe      514:   added h_errno and __h_errno_location
                    515:   added inet_ntoa
1.49      fefe      516:   added setpgrp and getpgrp, strsignal and execv (thanks, Olaf)
1.51      fefe      517:   add bcopy, index, rindex macros
                    518:   add isgraph and isxdigit
1.52      fefe      519:   add strftime (ugh!!!)
1.53      olaf      520:   Olaf fixed strftime, gmtime_r leap year bug.
1.54      fefe      521:   Jeff Garzik contributed a spec file.  I put it in contrib and hope
                    522:     everbody knows what to do with it...
                    523:   Olaf checked in a ton of libpthread stuff.
1.55      fefe      524:   added mkstemp using /dev/urandom (harder to guess than getpid()).
1.56      fefe      525:   add large file backwards compatibility support (so gzip will run on
                    526:     kernel 2.2 and 2.0)
1.57      fefe      527:   added shutdown
1.58      fefe      528:   added nice
                    529:   added pseudo-locale support for is* (they are now weak aliases,
                    530:     isupper -> __isupper_ascii etc).  So, for example, liblatin1 can
                    531:     overwrite the default is* functions.
1.59      fefe      532:   added liblatin1.a
1.60      fefe      533:   added tzfile implementation (does it work for anyone else?)
1.61      fefe      534:   added syslog(3) (thanks to Rene Müller!)
1.62      fefe      535:   Jeff Garzik contributed getgr*, getpw* and getsp* in one tiny package.
                    536:     Thanks!
1.63      fefe      537:   merged duplicate code in execv and execvp into exec_lib.o
1.34      fefe      538: 
1.21      fefe      539: 0.7.2:
                    540:   added several prototypes to already implemented functions and
                    541:     <sys/reboot.h>.  Thanks for Abraham for pointing this out.
1.22      fefe      542:   added prototypes for process group and dup syscalls.  Thanks to
                    543:     Abraham again.  He also contributed an implementation for daemon(),
                    544:     an ugly BSD hack.  I decided to diversify the lib/ directory a
                    545:     little and now created a libugly/ directory for stuff like system()
                    546:     and daemon() ;-)
                    547:   added libstdio and moved all that stdio crap from lib/ there.  The
                    548:     idea is to start separating now what we will separate for shared
                    549:     libraries anyway.
1.26      fefe      550:   optimized x86 unified-syscall by Olaf.
1.27      fefe      551:   added limits.h, removed __ARCHBITS from endian.h (use __WORDSIZE from
                    552:     limits.h instead)
                    553:   added remove.c and enough cruft to limits.h to make it compile lzo,
                    554:     lzop and bzip2.
1.28      fefe      555:   added mktime, asctime_r, asctime and ctime (needed for gzip).
                    556:   Someone will need to implement a reader for the glibc localtime file
1.31      fefe      557:     format some day (man tzfile, ugh!) :-(
1.29      fefe      558:   added unlink prototype to unistd.h.
                    559:   added gmtime and gmtime_r.
1.31      fefe      560:   fixed sparc unified syscall error handling (please upgrade!).
1.30      fefe      561:   removed readdir glibc compatibility cruft.
1.31      fefe      562:   removed stat glibc compatibility cruft.
1.32      fefe      563:   oops, my fread was broken for pipes.
1.33      fefe      564:   Olaf found a bug in pipe() for sparc, too.
1.21      fefe      565: 
1.9       fefe      566: 0.7.1:
1.11      fefe      567:   optimized away the static arrays from __ltostr and __lltostr.
                    568:   optimized away the static arrays (and more!) from strtoul and strtoull.
                    569:   added system (by Olaf).
1.12      fefe      570:   added tolower and toupper
1.13      fefe      571:   added getopt from Olaf (~600 bytes on x86!)
1.14      fefe      572:   added clone for mips (by Olaf).
                    573:   fixed longjmp and setjmp on sparc not to require glibc include files.
1.15      olaf      574:   added pause for all (by Olaf).
1.17      fefe      575:   added __attribute__ ((__const__)) to ctype.h
1.16      fefe      576:   added isupper and islower.
                    577:   added putc and putchar as macros.
1.17      fefe      578:   added strcasecmp and strncasecmp (thanks to Abraham vd Merwe for
                    579:     insightful discussions and patches I partially used for the last three)
1.18      fefe      580:   added getpriority and setpriority (also by Abraham)
1.19      fefe      581:   oops, I broke strtoul in a recent optimization attempt.
1.20      fefe      582:   oi, setjmp and longjmp were broken on other platforms, too!
                    583:     Thanks to Sébastien Côté for reporting this.
1.9       fefe      584: 
                    585: 0.7:
1.6       olaf      586:   clone support for i386,alpha,arm and sparc by Olaf.
1.1       cvs       587:   Initial dynamic loading glue for i386, also by Olaf.
                    588:   We don't have a dynamic loader yet, so this is not yet usable.
                    589:   added readv, sigdelset, sigaltstack, sigfillset, sigismember, usleep,
                    590:     vsprintf, writev, all by Olaf.
1.2       fefe      591:   imported readdir fix from Guillaume.  Mhh, can the kernel interface
                    592:     really be this broken?
1.3       fefe      593:   Found a kludgy way to detect whether the kernel includes define struct
                    594:     stat64 (they also define STAT64_HAS_BROKEN_ST_INO).  If this does
                    595:     not work for you, please tell me!
1.4       fefe      596:   Removed bogus __seek_types enum, it's a bunch of #defines now.
1.7       fefe      597:   Fixed stdio line buffering.  The code was already there but I forgot
                    598:     to mark stdio and stdout as line buffered.  This should really be
                    599:     done dynamically using isatty, though.
1.8       fefe      600:   Removed superfluous "if (1)" in execvp.c
1.1       cvs       601: 
                    602: 0.6.14:
                    603:   *scanf did not append the 0 byte for %s.
                    604:   added creat and changed creat to call open directly instead of open64.
                    605:   did for fread what 0.6.10 did for fwrite.
                    606:   repaired buffered stdio a little (line buffering is still not
                    607:     supported).
                    608:   [All of these bugs have been reported by Guillaume.  Thanks!]
                    609:   added __pure__ to strchr and strrchr in <string.h>
                    610: 
                    611: 0.6.13:
                    612:   included COPYING to make clear that the diet libc is covered by the
                    613:     GNU General Public License (and _not_ the LGPL).  That means that
                    614:     you need to obtain a license from me if you want to use the diet
                    615:     libc in a proprietary program that you want to distribute.
                    616:   The x86 unified syscall swapped arguments #4 and #5 and noone
                    617:     noticed until now!  Thanks to Guillaume Cottenceau for reporting
                    618:     this!
                    619:   The malloc had a subtle bug with small allocations that could cause
                    620:     segfault.  Guillaume reported it, Olaf fixed it.
                    621: 
                    622: 0.6.12:
                    623:   added assert, statfs and fstatfs
                    624:   added include/net/if.h so fget compiles again.
                    625: 
                    626: 0.6.11:
                    627:   added putenv.
                    628: 
                    629: 0.6.10:
                    630:   fixed fwrite.  It returned the number of bytes written, not the number
                    631:     of records.  Thanks to Albert D. Cahalan for pointing this out.
                    632:   fixed fgets.  It returned EOF on empty lines.  Thanks, Erik Frey.
                    633:   added brk and sbrk.  harold@nb.com.sg made me do it.
                    634: 
                    635: 0.6.9:
                    636:   fixed execvp not to return on ENOENT
                    637:   did for {open|read|close|seek|tell}dir what I did for stat before.
                    638:     The glibc compatibility part is currently non-functional.
                    639:   fixed white space handling in sscanf " (" would not match " (".
                    640:   fixed printf to accept 'l' flag.
                    641:   fixed getpwuid (ignored last line)
                    642: 
                    643: 0.6.8:
                    644:   Olaf contributed initial thread-safe syscalls for i386, alpha, sparc,
                    645:     mips and arm.  I did the one for ppc.  They can be enabled in dietfeatures.h.
                    646:   added strlcpy and strlcat from OpenBSD.
                    647:   added stat64, fstat64 and lstat64.
                    648:   added endian.h and made ending of strlen.c endianness-aware
                    649:   added string routines size tweak to dietfeatures.h.  Most of the
                    650:     string routines have been unrolled.  This is up to three times as
                    651:     fast but creates up to three times larger code.  Now you can disable
                    652:     the unrolling.
                    653:   added sendfile.
                    654:   I also added pread.  It works on x86 and sparc but not on ppc and mips.
                    655:     I have no idea what's going on.  strace disagrees with the kernel.
                    656:     Can anyone help?  I asked the Linux kernel mailing list for help, too.
                    657:   added a few aliases of the type __libc_open for open.  nm on
                    658:     libpthreads.so indicates that we will need them.
                    659: 
                    660: 0.6.7:
                    661:   the sources now compile without warnings with -Wall.
                    662:   printf now prints "(null)" when %s is passed NULL.  This can be
                    663:     removed with WANT_NULL_PRINTF in dietfeatures.h
                    664:   added vfprintf, execl, ttyname.
                    665:   stat, lstat and fstat are now #defined to __dietstat, __dietlstat and
                    666:     __dietfstat so they can use the normal kernel struct stat.
                    667:     stat, lstat and fstat are now C wrappers that convert to the glibc
                    668:     struct stat.  So we can avoid that overhead for programs that use
                    669:     dietlibc headers.
                    670: 
                    671: 0.6.6:
                    672:   changed the Makefiles so you can now set CFLAGS on the command line
                    673:   added memccmp (analogous to memccpy) and strncmp.
                    674:   Olaf fixed another bug in the sparc unified syscall.
                    675:   Paul Clifford contributed a C version of his strlen.S that is much
                    676:     more efficient than the previous strlen on all platforms!  It also
                    677:     looks like technology from Roswell. ;-}
                    678:   added a "real" stdio.  Well, almost.  Please contribute!
                    679:   added dietfeatures.h so you can remove features you don't need.
                    680:   removed debug code from vsnprintf that changed \0 to ' ' (argh!).
                    681:   stdio now works with simple programs and minigzip from libz.
                    682:   stdio uses some major trickery to avoid linking the stdio, stderr and
                    683:     stdout (and reserving space for them) when they are not used.
                    684: 
                    685: 0.6.5:
                    686:   Red Plait <redplait@ixcelerator.com> found several bugs in diet libc,
                    687:     most of them bugs in the new header files, but also missing sigset
                    688:     functions.
                    689:   Paul Clifford contributed an assembly strlen.S for ARM and fixed
                    690:     several bugs.
                    691:   Fixed ppc/setjmp and mips/pipe.
                    692:   Olaf contributed a new sparc unified syscall.
                    693: 
                    694: 0.6.4:
                    695:   declared is* static inline in getservent.
                    696:   added assert_fail, strtoul, isalpha, isdigit, isalnum, isascii.
                    697:   changed strlen to return 0 when passed NULL.
                    698:   new, much smaller unified syscall for MIPS.  Thanks to Olaf the Mad
                    699:     Scientist who actually implemented this without access to a MIPS
                    700:     box, just from reading the architecture manual.  And it worked out
                    701:     of the box.
                    702:   started a set of system includes, mainly so that I can use lcc and
                    703:     my alpha-linux cross compiler (which is unable to cross-compile
                    704:     glibc).  diet libc can now be compiled without any include files
                    705:     from a normal libc.  The includes do declare more than diet libc
                    706:     currently delivers and they are still far from complete for real
                    707:     applications.
                    708:   I will only add assembly versions that are smaller _and_ faster than
                    709:     the C version.  Larger routines are only accepted if they are called
                    710:     very often and are substantially faster.
                    711:   added i386 assembly strchr, which is smaller and faster than the old
                    712:     version.  It is, however, larger than the version contributed by
                    713:     proton (thanks, anyway).
                    714:   added i386 strlen (31% faster, 14% smaller)
                    715:   "make t" will now create a map file called "mapfile".
                    716: 
                    717: 0.6.3:
                    718:   added sys_errlist, strerror and perror
                    719:   added isblank
                    720:   added atol
                    721: 
                    722: 0.6.2:
                    723:   mmap for ARM didn't compile.  Thanks, Paul!
                    724: 
                    725: 0.6.1:
                    726:   split mmap into the architecture specific subdirectories.
                    727:   getenv now copes with environ==NULL, thanks Paul Clifford.
                    728:   Paul also contributed a smaller ARM startup code.
                    729: 
                    730: 0.6:
                    731:   strcat returned the wrong result.  Thanks, Dietz Pröpper.
                    732:   strtod now understands a negative exponent (oops, thanks Bertram Barth)
                    733:   Port to arm-linux-gnu, but on the Netwinder I use for testing the
                    734:     __dtostr does not work (I have no idea why!)
                    735:   The MIPS port now uses (much smaller) non-PIC code.  That means that
                    736:     the applications you link against diet libc also have to be compiled
                    737:     non-PIC.  I suggest copying the CFLAGS from the diet libc Makefile.
                    738:     Thanks to Ralf Bächle for helping me with this!
                    739:   I made subdirectories for the architectures and use VPATH to override
                    740:     VPATH so that make finds the source file automatically.  That should
                    741:     simplify the sources greatly.
                    742:   Olaf Dreesen contributed Alpha support including setjmp and longjmp!
                    743:   ARM and MIPS now also have setjmp and longjmp
                    744:   "compile" and "load" are now make targets.  Use them for djb programs.
                    745:   added contrib/elftrunc.c which will remove unnecessary ELF headers.
                    746:     Again, contributed from Olaf.  Great work!
                    747: 
                    748: 0.5.12:
                    749:   printf also does signed numbers.
                    750:   If you don't use atexit, dietlibc now does not link exit, only _exit.
                    751:   *printf now correctly returns the number of bytes written.
                    752:   Olaf contributed experimental sscanf and vsscanf implementations.
                    753:   If passed NULL as buffer, snprintf will not write anything but still
                    754:     return the number of bytes it would have written.
                    755:   Initial MIPS port!   (Oh, the agony!)
                    756:     No setjmp and longjmp support yet!  Please contribute!
                    757:   I even implemented unified syscalls for MIPS.  Still, MIPS code is
                    758:     almost twice the size of SPARC code.  If anyone knows why: please
                    759:     tell me!
                    760: 
                    761: 0.5.11:
                    762:   I implemented new unified syscalls for x86, sparc and ppc, this time based
                    763:     on .s files and not .c files, and I moved the syscalls into
                    764:     subdirectores to clean the dietlibc sources up a little.
                    765:   A binary consisting of printf("%s is %d\n","olaf",23) is now
                    766:     2864 bytes on sparc
                    767:     2488 bytes on intel
                    768:   I kludgily implemented fprintf(stdout,... and fprintf(stderr,...
                    769:     to make a few more applications work.
                    770:   Olaf Dreesen also implemented some unified syscall stuff for x86.
                    771:   He discovered that with our unified syscall interface it actually
                    772:     costs <10 bytes total to make all system calls thread safe!
                    773:   I implemented atexit() (can register up to 4 callbacks).
                    774:   I implemented strtod and __dtostr (the opposite).  Now we can add
                    775:     floating point support to vsnprintf and sscanf!
                    776: 
                    777: 0.5.10:
                    778:   I actually saw that I can not only merge the errno handling code of
                    779:     the system calls on x86, I can also merge the rest (including the
                    780:     arguments) except for setting the system call number.  All those
                    781:     system calls are now just a jump to a unified system call handler.
                    782:     I got rid of x86openclose again.  The savings are substantial:
                    783:     chown from embutils went from 7664 to 7184 bytes!
                    784:     If I'd move the system call wrappers to assembly language, I could
                    785:     even reduce the alignment (does not matter since it's just a jump
                    786:     anyway) and get rid of the "ret" behind each jump (one byte per
                    787:     system call!)
                    788: 
                    789: 0.5.9:
                    790:   added memchr, strpbrk, strstr, strtol, isspace (hehe)
                    791:   fixed strdup
                    792:   fixed return values for strcpy and strcat (thanks to Norbert Berzen)
                    793:   Olaf Dreesen contributed a strtol and initial {sn|vsn|}printf implementation
                    794:     (no signed integers, only strings and unsigned integers (but
                    795:     supporting octal, hex and decimal).  Thanks, Olaf!  (by the way:
                    796:     that code must be wonderful, I don't understand it at all *bg*)
                    797:     Olaf's printf does understand padding like in "%08d" and "%8d" and
                    798:     automatically pads pointers with '0'.
                    799:   Rewrote the x86 start code, old: 22 instructions, new: 12 instructions.
                    800:   Thanks to proton for inspiration on this.
                    801:   The new x86 start code also does not reference exit any more, thus saving
                    802:   64 bytes for executables that don't call exit explicitly.
                    803:     [insert maniacal laughter] EVERY BYTE COUNTS!1!! ;-)
                    804:   Moved errno and environ to start.S, saving no byte binary size but
                    805:     speeding up compilation and slightly shortening dietlibc.a ;-)
                    806:   For x86: joined open and close into one assembler file, sharing the
                    807:     errno handling.  This is a feasibility test and it actually saves a
                    808:     few bytes.  I think I will reimplement the _syscall[1-6] macros on
                    809:     all platforms now to share the errno handling code for them.
                    810: 
                    811: 0.5.8:
                    812:   fixed strchr to be able to look for 0.
                    813: 
                    814:   added _llseek, ftruncate, getpgid, getresgid, getresuid, getsid,
                    815:   memccpy, memmove, mprotect, setregid, setresgid, setresuid, setreuid,
                    816:   strncpy, swapon, truncate, strtok, strtok_r, strspn, strcspn (all
                    817:   contributed by Olaf Dreesen)
                    818: 
                    819:   added execvp, getcwd
                    820: 
                    821:   fixed __xmknod
                    822: 
                    823:   Note: can it be that the ftw interface really is so broken that I
                    824:   cannot implement it without having to implement some searching data
                    825:   structure?  I included an experimental ftw implementation that will
                    826:   not follow symlinks.
                    827: 
                    828: 0.5.7:
                    829:   oops, if_nametoindex was broken!
                    830: 
                    831: 0.5.6:
                    832:   ported to ppc-linux.
                    833:   fixed i386 sigsetjmp (I mistyped the function name)
                    834:   included sigjmp.c
                    835: 
                    836: 0.5.5:
                    837:   added wait, sys_siglist, longjmp/setjmp/sigsetjmp for i386 and sparc
                    838:   actually, it wasn't fork that wasn't working for sparc, it was pipe.
                    839:   I fixed it now.
                    840:   dietlibc/SPARC assumes -msupersparc (does not provide div, mul, etc)
                    841:   fixed readdir to use getdents and not the intel inline asm
                    842: 
                    843: 0.5.4:
                    844:   ported to sparclinux (sparc32 only).  Beware: does not work yet.
                    845:   added raise, abort, readlink, strcat, geteuid, geteuid, wait3, access
                    846: 
                    847: 0.5.3:
                    848:   added tcsetattr and getenv to compile e3
                    849: 
                    850: 0.5.2:
                    851:   added vhangup, tcgetattr, isatty and memcmp for fgetty
                    852:     (http://www.fefe.de/fgetty/)
                    853:   added localtime from uC-libc.
                    854: 
                    855: 0.5.1:
                    856:   stat and friends actually work now.  Yuck!  Another case of
                    857:     translation between kernel and userland.  Why can't the kernel
                    858:     people and the libc people simply agree on a standard?
                    859:   removed many unnecessary includes to speed up compilation.
                    860:   added -fomit-frame-pointer and i386 compilation target to reduce code size.
                    861:   inlined socketcall to reduce code size.
                    862:   "load" and "compile" are examples for djb code.
                    863: 
                    864: 0.5:
                    865:   Olaf Dreesen contributed a much smaller implementation of malloc and friends.
                    866:   each object file is now treated with "strip -x -R .note -R .comment"
                    867:   split each system call into a separate object file
                    868:   added ntohs, htons, alarm, if_indextoname and if_nametoindex
                    869: 
                    870: 0.4.1:
                    871:   oops, the strchr implementation was wrong.  Thanks Jens Laas!
                    872: 
                    873: 0.4:
                    874:   copied opendir and friends from uC-libc.
                    875:   added getservent and getservby* in gerservent.c
                    876: 
                    877: 0.3:
                    878:   remove readdir system call
                    879:   added getdents system call
                    880:   added getpwnam/getpwuid implementation in getpwnam.c
                    881:   added a few string functions (in str*.c)
                    882: 

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