Annotation of dietlibc/CHANGES, revision 1.209
1.209 ! fefe 1: 0.14:
! 2:
1.193 fefe 3: 0.13:
1.194 fefe 4: add readdir64 and automatic mapping if _FILE_OFFSET_BITS == 64
1.199 fefe 5: make diet not include the linker safeguard stuff when preprocessing
1.207 fefe 6: Olaf: port to S/390!
1.196 leitner 7: me: fix vfork (it was put into dietlibc.a twice)
1.197 leitner 8: res_query did not initialize last
1.199 fefe 9: diet (not diet-dyn, of course) now adds -static to the gcc command line
1.198 leitner 10: fixed fflush on input streams (tic from ncurses exposed this)
1.199 fefe 11: duh, there is an alarm system call, too, so we use it and not setitimer
1.200 fefe 12: fix comparison in gmtime_r that caused Jan 1 to be converted to Dec 32.
1.201 fefe 13: rewrote __dtostr (it also has one more argument now)
1.205 fefe 14: Thanks to Erik Troan for bringing these to my attention:
1.204 fefe 15: make putenv behave like glibc (putenv("HOME") == unsetenv("HOME"))
16: fix strncat for the case where n == 0 (security implications?)
17: fix bsearch (it didn't find the very last element in the array, same
18: bug in both the C and the i386 assembly version).
1.205 fefe 19: fixed FNM_PATHNAME in fnmatch
1.204 fefe 20: fix brk (the syscall was documented incorrectly in the Linux man page)
21: Thanks, Thomas Ogrisegg!
1.205 fefe 22: added negated character classes to fnmatch (not required by POSIX)
1.206 fefe 23: make the utmp routines open utmp read-only if read-write doesn't work.
1.208 fefe 24: remove syscalls.c directory, it is obsolete now with unified syscalls
1.193 fefe 25:
1.164 fefe 26: 0.12:
27: more contributions from Frank Klemm.
1.165 fefe 28: iconv can now do UCS-2, too.
1.167 fefe 29: Imported several x86 assembly routines from Wouter van Kleunen.
1.166 fefe 30: Lots of bug fixes, and several more i386 specific versions of common
31: routines to make them smaller.
1.168 fefe 32: add memmem (a GNU extension that looks useful)
1.170 fefe 33: several changes from Michal Ludvig: inttypes.h gets C99 macros,
1.168 fefe 34: add pivot_root syscall, %n for *scanf.
1.169 fefe 35: add adjtimex (thanks, Laurent BERCOT)
1.171 fefe 36: add Frank Klemm's optimized md5
1.172 fefe 37: add -Os option to diet (see diet.1).
1.173 fefe 38: several IPv6 constants and HZ were missing, thanks Johannes Kloos.
1.174 fefe 39: add 32-bit uid/gid syscalls.
1.175 fefe 40: add rand48 (thanks, Johannes Kloos)
1.176 fefe 41: fixed a lot of bugs in getopt* (thanks, Johannes)
1.177 fefe 42: add strxfrm and tweak limits.h. glib-1.3.8 now compiles without changes.
43: add a few more module syscalls. modutils-2.4.9 now compiles without changes.
44: fix gethostent alias list termination. Major oops.
1.178 fefe 45: add execle and two DNS constants (from Johannes Kloos).
1.179 fefe 46: opendir did not close-on-exec (thanks, Laurent Bercot).
1.180 fefe 47: DNS will now properly signal errors and set h_errno.
48: A few more cleanups (thanks, Andreas Jabs and Matthias Andree).
1.181 fefe 49: Added an uber-cool linker safeguard feature! Idea by Matthias Andree.
50: If you enable WANT_SAFEGUARD in dietfeatures.h, diet will include an
51: external reference to a symbol that is only in the diet libc. So,
52: when you accidentally link a diet libc compiled object file against
53: glibc, the linker will barf. This will bloat your object files, but
54: you can remove all the references with "strip -R .note" from
55: the binaries in the end (which you should do anyway).
1.182 fefe 56: fix ARM unified syscall (select did not work).
1.183 fefe 57: add getpwent_r ala glibc and replace getpwent
58: do the same for getgrent and getspent
59: remove entlib (new code is smaller)
1.184 fefe 60: rewrite getserv* to use parselib (and provide ..._r, too)
1.185 fefe 61: add getpwnam_r and getpwuid_r
1.186 fefe 62: rewrite getproto* to use parselib (and protive ..._r, too)
1.187 fefe 63: Olaf muddled with the dynamic linker. It's a clean-room
64: implementation in the sense that it once worked for Olaf in a clean
65: room ;)
1.188 fefe 66: add if_nameindex and if_freenameindex.
67: fixed arm unified syscalls to work with current binutils (; is no
68: longer a line separator but starts a comment, switched to .macro)
1.189 fefe 69: changed all st_[cma]time types to signed long so comparisons against
70: LONG_MIN will work correctly. (GNU tar does this)
1.190 fefe 71: fixed two bugs regarding ungetc.
72: add getusershell, setusershell, endusershell (for vs_ftpd)
73: add prctl, dirfd (also for vs_ftpd)
1.191 fefe 74: fixed strftime (was completely hosed)
1.192 fefe 75: added real make install target
1.164 fefe 76:
1.115 fefe 77: 0.11:
78: fix major oops in DNS routines (only with WANT_FULL_RESOLV_CONF enabled).
1.116 fefe 79: fix vsscanf bug (Thanks, David Chappell).
1.117 fefe 80: add floor, ceil and memchr prototypes.
81: add __builtin_expect and expect #defines for gcc versions below 3.0
1.118 fefe 82: cleaner errno vs __errno_location handling
83: add placeholder iconv (iconv_open will always return EINVAL)
84: try to remove kernel 2.4 header dependency in IPv6 sockaddr_in6
85: initialization of getaddrinfo.
1.119 fefe 86: fix vsnprintf %X (printed lower case)
1.120 fefe 87: I wrote a new getopt. It appears to actually work (it is POSIX
88: compliant, it does not sort argv like the GNU version) and is only
89: a little over 300 bytes on x86.
1.121 fefe 90: Guillaume Cottenceau just wrote me that strncat should be even more
91: broken than it already is: it should append n bytes AND THEN \0!
92: I wonder how many programmers have produces off-by-one errors here...
1.122 fefe 93: Fix regexec offset return. autoconf now believes that diet libc has
94: POSIX regular expressions.
1.123 fefe 95: Fix fnmatch (a/b/* matched a/b/c/d even if FNM_PATHNAME was set)
1.124 fefe 96: Fix regular expression match for x* when there is no x at all.
1.125 fefe 97: Fix memory leak in error case in gethostbyname(2|). Thanks, Dietz Pröpper.
1.126 fefe 98: Add %h to vsnprintf.
1.127 fefe 99: Add FAQ.
1.128 fefe 100: Make %h work for signed numbers and add %hh to vsnprintf.
101: initgroups ignored the group argument :-(
102: remove printf references and nested functions from glob.
1.129 fefe 103: added an errno in libpthread that will display a prominent linker
104: warning.
1.131 fefe 105: started getting rid of kernel headers. Big task! :-(
1.130 fefe 106: add res_mkquery. The diet libc can now compile and link mtr.
1.132 olaf 107: Olaf: added a lot of code in libdl (not yet complete), changed the
108: startup code to make it work with his libdl and ld.so (needs still work
109: too)
1.134 fefe 110: __dns_readstartfiles only took the first domain or search path.
111: Thanks, Anthony de Boer
1.133 olaf 112: Olaf: added clone and a new unified_syscall for PowerPC
113: also dynlinker is now available (i386 only at this time)
1.135 fefe 114: crufted together a stdarg.h implementation from the various gcc headers.
1.136 fefe 115: implement getopt_long (ugh, the GNU people need professional help)
1.137 fefe 116: fixed word delimiters in regex (they looked for space, i.e. "," did
117: not work as delimiter)
1.138 fefe 118: errno.h now declares sys_errlist and sys_nerr.
1.143 fefe 119: added mkdtemp.
1.142 fefe 120: Uwe Ohse reported all of the following bugs:
121: ttyname should return 0 if !isatty.
122: realpath returns NULL if "." cannot be opened
123: putenv erroneously accepted (and mishandled) entries without "=".
124: popen returned 255 instead of 127 if /bin/sh could not be run.
125: fgetc did not set the internal EOF indicator on EOF.
126: bsearch contained an assumption about integer arithmetic overflow
127: behavior.
128: system did not set SIGCHLD and thus contained a race.
129: popen did not set close-on-exec and could leak an fd on malloc error.
1.147 fefe 130: daemon did not check whether open returns an fd below 3
131: perror did not save errno.
1.144 olaf 132: Olaf: Peter Jones reported some problems with perror; strerror had the
133: same problem.
134: Peter also posted a patch to atexit/exit. With some modifications it is
135: now implemented.
1.145 fefe 136: Unbuffered stdio and ungetc can no longer be disabled. I will try to
137: implement part of it using ELF weak symbols.
1.146 fefe 138: Added minimal sysconf (tehe) from David Chappell.
1.148 fefe 139: Added overflow handling for strtoul and strtol.
1.149 fefe 140: Added WANT_ETC_HOSTS in dietfeatures.h and made gethostbyname/2 use
141: it before falling back to DNS if enabled.
1.150 fefe 142: Added a littie backwards compatibility cruft for gpm (man, do these
143: sources stink!)
1.151 fefe 144: Added openpty.
1.152 fefe 145: Squeeze a few bytes off the is* routines, courtesy of Peter Jones.
1.154 fefe 146: Fix fseek return value.
1.155 fefe 147: Add dirname and basename.
1.156 fefe 148: Add a few i386 math routines contributed by Frank Klemm.
1.157 fefe 149: Fixed getservent (did not allow _ and - in the aliases).
150: Thanks, Oden Eriksson
1.158 fefe 151: Added a float.h so configure believes we have ANSI header files.
152: Fix a lot more stdio bugs that Uwe Ohse pointed out.
1.162 fefe 153: Olaf: has added a new scanf and printf core that is suitable for all
1.159 olaf 154: scanf and printf function implementations
1.160 fefe 155: Imported a few more functions and optimizations from Frank Klemm (he
156: also rewrote dtostr to have more precision)
1.161 olaf 157: Olaf: checked in a new sig* function family (based on rt_sig*).
158: legacy <2.2 signal-handling doesn't work at the moment.
1.163 fefe 159: Made rudimentary iconv that can convert back and forth between
160: iso-8859-1, utf-8 and ucs-4 (for debugging).
161: Thanks to Markus Kuhn for the excellent utf-8(7)!
1.115 fefe 162:
1.74 fefe 163: 0.10:
164: update getpagesize.
165: add personality.
1.75 fefe 166: add "%*s" and "%*.*s" support to vsnprintf.
1.76 fefe 167: add putchar (apparently arm-linux-gcc will substitute printf("\n")
168: with putchar('\n') behind your back...?!
1.77 fefe 169: import include/scsi/ from glibc.
1.78 fefe 170: add iopl.
1.80 fefe 171: add execl and sigdelset prototypes.
172: add getopt_long stuff to getopt.h (may compile but won't link).
1.81 fefe 173: add RPC headers (no code yet).
1.82 fefe 174: add mlockall, munlockall
1.83 fefe 175: make "diet gcc foo.c" work.
176: added Sun RPC code and removed as many warnings as possible in a
177: heroic act of self-mutilation.
178: added getproto* and getdtablesize for the RPC cruft :-(
1.84 fefe 179: added getpass. mount from util-linux actually compiles now!
180: fix the sig*set routines. mount actually works now *bg*
181: fix fwrite dividing by zero when trying to fwrite n records of size 0.
1.85 fefe 182: added an initial regex implementation (3500 bytes!!!).
1.87 fefe 183: add llseek and lseek64 with optional lseek fall-back.
1.88 fefe 184: add res_init.
185: add asprintf (ugh, what an ugly function).
1.89 fefe 186: expanded arpa/nameser.h to include backwards compatibility defines
1.90 fefe 187: add ut_name alias to ut_host in struct utmp.
188: add inet_ntop, inet_pton, gethostbyname2.
1.92 fefe 189: add sysinfo, recvmsg, sendmsg.
1.93 fefe 190: add endmntent, getmntent, setmntent.
1.94 fefe 191: fix fnmatch (thanks, Guillaume Cottenceau!)
1.96 fefe 192: add setenv.
193: remove __restrict from mntent.h, add __restrict__ removal alias for
194: older gcc versions in sys/cdefs.h.
195: add rlim_t, sig_atomic_t declarations.
196: add sigsetjmp #define for __sigsetjmp (oops).
197: (Thanks to Chris Siebenmann for these three bug reports)
1.97 fefe 198: add a gruesome hack to printf floating point to accept %f and kludge
199: together support for %.2f. Don't look at the code, please!
1.98 fefe 200: fixed tcsetpgrp (oops, this is embarassing! Thanks, Chris Siebenmann)
1.99 fefe 201: imported fix for entlib by Jeff Garzik.
1.100 fefe 202: add glob implementation from Guillaume Cottenceau (Thanks!!)
203: add libdl fragments from Olaf (Yeah! One step closer to dynamic linking!)
1.101 fefe 204: add REG_ICASE and word start/end handling to my regular expressions.
205: my regular expressions now actually match substrings (i.e. "foobar" to "bar").
1.102 fefe 206: wrap getcwd to comply to man page (the syscall returns the number of
207: bytes, not the buffer)
208: add realpath.
1.103 fefe 209: fix vfprintf.
1.104 fefe 210: fix *scanf %s zero termination.
211: add abs, labs, llabs.
1.105 fefe 212: add <sys/io.h>, ioperm syscall.
213: add flock to <sys/file.h>
1.106 fefe 214: fixes to bsearch and the regular expressions.
1.107 fefe 215: add fake herror.
1.108 fefe 216: add scandir and alphasort.
1.109 fefe 217: add killpg
1.110 fefe 218: implemented a gross hack to make libpthread compile when
219: dietfeatures.h does not define WANT_THREAD_SAFE (it's empty then).
1.111 fefe 220: add getaddrinfo and freeaddrinfo (man, what a fucked up interface!)
1.112 fefe 221: fix sigsuspend (syscall had completely fscked up arguments!)
1.113 fefe 222: RLIM_INFINITY from the kernel is broken. Thanks to Chris Siebenmann
223: for sending a patch.
1.114 fefe 224: add getserv*.
225: add WANT_FULL_RESOLV_CONF so that the DNS routines use "domain" and
226: "search" from resolv.conf.
1.74 fefe 227:
1.73 fefe 228: 0.9:
1.65 fefe 229: fixed initgroups (oops)
1.66 fefe 230: Cleanup appending file open for stdio (thanks, James Antill)
231: imported vfprintf fix from James Antill.
1.67 fefe 232: add fnmatch
233: change index, rindex and bcmp as weak ELF symbols (were #defined before)
1.68 fefe 234: Olaf added character classes to *scanf.
1.69 fefe 235: Put object and library files into a separate directory (bin-$ARCH).
236: Add "cross" make target to make all architectures.
237: Add "diet" program and man page.
1.70 fefe 238: Add getgrnam, getgrgid
1.71 fefe 239: Add cfmakeraw (Thanks, Antonio Musumeci)
1.72 fefe 240: localtime won't call gettimeofday when the tzfile parser is used.
1.65 fefe 241:
1.64 fefe 242: 0.8:
1.34 fefe 243: vsnprintf(0,...) estimated the length of strings with a padding width
244: incorrectly.
1.35 fefe 245: new reboot() from Olaf.
1.36 fefe 246: added prototypes for getsockopt and setsockopt.
1.39 fefe 247: added experimental sem* and shm*
1.38 fefe 248: define EXIT_SUCCESS and EXIT_FAILURE
1.40 fefe 249: added setvbuf (only changes mode, not buffer)
1.41 fefe 250: added dietwarning.h (woohoo, linker warnings!) and used it to warn of
251: insecurity (system, sprintf) or bloat (printf and stdio).
1.42 fefe 252: added qsort() and bsearch(). Benchmark on 1000 random ints:
253: glibc: 679414 cycles qsort and 3352 cycles bsearch
254: diet libc: 300010 cycles qsort, 553 cycles bsearch
255: I have no idea why glibc is so slow.
1.43 fefe 256: added __isnan (references by libm.a from glibc).
257: added popen() and pclose(). Now the diet libc can link slsh (from
258: S-Lang!)
1.44 fefe 259: corrected usleep. It was more of an msleep until now.
1.45 fefe 260: corrected __dtostr (it looped when trying to format "0.0").
261: several fixes to stdio (thanks to S-Lang's excellent test suite!)
1.46 fefe 262: added ungetc (does it work?)
1.47 fefe 263: added inet_aton (yuck!)
1.50 fefe 264: added gethostbyname, gethostbyaddr, gethostbyname_r and gethostbyaddr_r
1.48 fefe 265: added h_errno and __h_errno_location
266: added inet_ntoa
1.49 fefe 267: added setpgrp and getpgrp, strsignal and execv (thanks, Olaf)
1.51 fefe 268: add bcopy, index, rindex macros
269: add isgraph and isxdigit
1.52 fefe 270: add strftime (ugh!!!)
1.53 olaf 271: Olaf fixed strftime, gmtime_r leap year bug.
1.54 fefe 272: Jeff Garzik contributed a spec file. I put it in contrib and hope
273: everbody knows what to do with it...
274: Olaf checked in a ton of libpthread stuff.
1.55 fefe 275: added mkstemp using /dev/urandom (harder to guess than getpid()).
1.56 fefe 276: add large file backwards compatibility support (so gzip will run on
277: kernel 2.2 and 2.0)
1.57 fefe 278: added shutdown
1.58 fefe 279: added nice
280: added pseudo-locale support for is* (they are now weak aliases,
281: isupper -> __isupper_ascii etc). So, for example, liblatin1 can
282: overwrite the default is* functions.
1.59 fefe 283: added liblatin1.a
1.60 fefe 284: added tzfile implementation (does it work for anyone else?)
1.61 fefe 285: added syslog(3) (thanks to Rene Müller!)
1.62 fefe 286: Jeff Garzik contributed getgr*, getpw* and getsp* in one tiny package.
287: Thanks!
1.63 fefe 288: merged duplicate code in execv and execvp into exec_lib.o
1.34 fefe 289:
1.21 fefe 290: 0.7.2:
291: added several prototypes to already implemented functions and
292: <sys/reboot.h>. Thanks for Abraham for pointing this out.
1.22 fefe 293: added prototypes for process group and dup syscalls. Thanks to
294: Abraham again. He also contributed an implementation for daemon(),
295: an ugly BSD hack. I decided to diversify the lib/ directory a
296: little and now created a libugly/ directory for stuff like system()
297: and daemon() ;-)
298: added libstdio and moved all that stdio crap from lib/ there. The
299: idea is to start separating now what we will separate for shared
300: libraries anyway.
1.26 fefe 301: optimized x86 unified-syscall by Olaf.
1.27 fefe 302: added limits.h, removed __ARCHBITS from endian.h (use __WORDSIZE from
303: limits.h instead)
304: added remove.c and enough cruft to limits.h to make it compile lzo,
305: lzop and bzip2.
1.28 fefe 306: added mktime, asctime_r, asctime and ctime (needed for gzip).
307: Someone will need to implement a reader for the glibc localtime file
1.31 fefe 308: format some day (man tzfile, ugh!) :-(
1.29 fefe 309: added unlink prototype to unistd.h.
310: added gmtime and gmtime_r.
1.31 fefe 311: fixed sparc unified syscall error handling (please upgrade!).
1.30 fefe 312: removed readdir glibc compatibility cruft.
1.31 fefe 313: removed stat glibc compatibility cruft.
1.32 fefe 314: oops, my fread was broken for pipes.
1.33 fefe 315: Olaf found a bug in pipe() for sparc, too.
1.21 fefe 316:
1.9 fefe 317: 0.7.1:
1.11 fefe 318: optimized away the static arrays from __ltostr and __lltostr.
319: optimized away the static arrays (and more!) from strtoul and strtoull.
320: added system (by Olaf).
1.12 fefe 321: added tolower and toupper
1.13 fefe 322: added getopt from Olaf (~600 bytes on x86!)
1.14 fefe 323: added clone for mips (by Olaf).
324: fixed longjmp and setjmp on sparc not to require glibc include files.
1.15 olaf 325: added pause for all (by Olaf).
1.17 fefe 326: added __attribute__ ((__const__)) to ctype.h
1.16 fefe 327: added isupper and islower.
328: added putc and putchar as macros.
1.17 fefe 329: added strcasecmp and strncasecmp (thanks to Abraham vd Merwe for
330: insightful discussions and patches I partially used for the last three)
1.18 fefe 331: added getpriority and setpriority (also by Abraham)
1.19 fefe 332: oops, I broke strtoul in a recent optimization attempt.
1.20 fefe 333: oi, setjmp and longjmp were broken on other platforms, too!
334: Thanks to Sébastien Côté for reporting this.
1.9 fefe 335:
336: 0.7:
1.6 olaf 337: clone support for i386,alpha,arm and sparc by Olaf.
1.1 cvs 338: Initial dynamic loading glue for i386, also by Olaf.
339: We don't have a dynamic loader yet, so this is not yet usable.
340: added readv, sigdelset, sigaltstack, sigfillset, sigismember, usleep,
341: vsprintf, writev, all by Olaf.
1.2 fefe 342: imported readdir fix from Guillaume. Mhh, can the kernel interface
343: really be this broken?
1.3 fefe 344: Found a kludgy way to detect whether the kernel includes define struct
345: stat64 (they also define STAT64_HAS_BROKEN_ST_INO). If this does
346: not work for you, please tell me!
1.4 fefe 347: Removed bogus __seek_types enum, it's a bunch of #defines now.
1.7 fefe 348: Fixed stdio line buffering. The code was already there but I forgot
349: to mark stdio and stdout as line buffered. This should really be
350: done dynamically using isatty, though.
1.8 fefe 351: Removed superfluous "if (1)" in execvp.c
1.1 cvs 352:
353: 0.6.14:
354: *scanf did not append the 0 byte for %s.
355: added creat and changed creat to call open directly instead of open64.
356: did for fread what 0.6.10 did for fwrite.
357: repaired buffered stdio a little (line buffering is still not
358: supported).
359: [All of these bugs have been reported by Guillaume. Thanks!]
360: added __pure__ to strchr and strrchr in <string.h>
361:
362: 0.6.13:
363: included COPYING to make clear that the diet libc is covered by the
364: GNU General Public License (and _not_ the LGPL). That means that
365: you need to obtain a license from me if you want to use the diet
366: libc in a proprietary program that you want to distribute.
367: The x86 unified syscall swapped arguments #4 and #5 and noone
368: noticed until now! Thanks to Guillaume Cottenceau for reporting
369: this!
370: The malloc had a subtle bug with small allocations that could cause
371: segfault. Guillaume reported it, Olaf fixed it.
372:
373: 0.6.12:
374: added assert, statfs and fstatfs
375: added include/net/if.h so fget compiles again.
376:
377: 0.6.11:
378: added putenv.
379:
380: 0.6.10:
381: fixed fwrite. It returned the number of bytes written, not the number
382: of records. Thanks to Albert D. Cahalan for pointing this out.
383: fixed fgets. It returned EOF on empty lines. Thanks, Erik Frey.
384: added brk and sbrk. harold@nb.com.sg made me do it.
385:
386: 0.6.9:
387: fixed execvp not to return on ENOENT
388: did for {open|read|close|seek|tell}dir what I did for stat before.
389: The glibc compatibility part is currently non-functional.
390: fixed white space handling in sscanf " (" would not match " (".
391: fixed printf to accept 'l' flag.
392: fixed getpwuid (ignored last line)
393:
394: 0.6.8:
395: Olaf contributed initial thread-safe syscalls for i386, alpha, sparc,
396: mips and arm. I did the one for ppc. They can be enabled in dietfeatures.h.
397: added strlcpy and strlcat from OpenBSD.
398: added stat64, fstat64 and lstat64.
399: added endian.h and made ending of strlen.c endianness-aware
400: added string routines size tweak to dietfeatures.h. Most of the
401: string routines have been unrolled. This is up to three times as
402: fast but creates up to three times larger code. Now you can disable
403: the unrolling.
404: added sendfile.
405: I also added pread. It works on x86 and sparc but not on ppc and mips.
406: I have no idea what's going on. strace disagrees with the kernel.
407: Can anyone help? I asked the Linux kernel mailing list for help, too.
408: added a few aliases of the type __libc_open for open. nm on
409: libpthreads.so indicates that we will need them.
410:
411: 0.6.7:
412: the sources now compile without warnings with -Wall.
413: printf now prints "(null)" when %s is passed NULL. This can be
414: removed with WANT_NULL_PRINTF in dietfeatures.h
415: added vfprintf, execl, ttyname.
416: stat, lstat and fstat are now #defined to __dietstat, __dietlstat and
417: __dietfstat so they can use the normal kernel struct stat.
418: stat, lstat and fstat are now C wrappers that convert to the glibc
419: struct stat. So we can avoid that overhead for programs that use
420: dietlibc headers.
421:
422: 0.6.6:
423: changed the Makefiles so you can now set CFLAGS on the command line
424: added memccmp (analogous to memccpy) and strncmp.
425: Olaf fixed another bug in the sparc unified syscall.
426: Paul Clifford contributed a C version of his strlen.S that is much
427: more efficient than the previous strlen on all platforms! It also
428: looks like technology from Roswell. ;-}
429: added a "real" stdio. Well, almost. Please contribute!
430: added dietfeatures.h so you can remove features you don't need.
431: removed debug code from vsnprintf that changed \0 to ' ' (argh!).
432: stdio now works with simple programs and minigzip from libz.
433: stdio uses some major trickery to avoid linking the stdio, stderr and
434: stdout (and reserving space for them) when they are not used.
435:
436: 0.6.5:
437: Red Plait <redplait@ixcelerator.com> found several bugs in diet libc,
438: most of them bugs in the new header files, but also missing sigset
439: functions.
440: Paul Clifford contributed an assembly strlen.S for ARM and fixed
441: several bugs.
442: Fixed ppc/setjmp and mips/pipe.
443: Olaf contributed a new sparc unified syscall.
444:
445: 0.6.4:
446: declared is* static inline in getservent.
447: added assert_fail, strtoul, isalpha, isdigit, isalnum, isascii.
448: changed strlen to return 0 when passed NULL.
449: new, much smaller unified syscall for MIPS. Thanks to Olaf the Mad
450: Scientist who actually implemented this without access to a MIPS
451: box, just from reading the architecture manual. And it worked out
452: of the box.
453: started a set of system includes, mainly so that I can use lcc and
454: my alpha-linux cross compiler (which is unable to cross-compile
455: glibc). diet libc can now be compiled without any include files
456: from a normal libc. The includes do declare more than diet libc
457: currently delivers and they are still far from complete for real
458: applications.
459: I will only add assembly versions that are smaller _and_ faster than
460: the C version. Larger routines are only accepted if they are called
461: very often and are substantially faster.
462: added i386 assembly strchr, which is smaller and faster than the old
463: version. It is, however, larger than the version contributed by
464: proton (thanks, anyway).
465: added i386 strlen (31% faster, 14% smaller)
466: "make t" will now create a map file called "mapfile".
467:
468: 0.6.3:
469: added sys_errlist, strerror and perror
470: added isblank
471: added atol
472:
473: 0.6.2:
474: mmap for ARM didn't compile. Thanks, Paul!
475:
476: 0.6.1:
477: split mmap into the architecture specific subdirectories.
478: getenv now copes with environ==NULL, thanks Paul Clifford.
479: Paul also contributed a smaller ARM startup code.
480:
481: 0.6:
482: strcat returned the wrong result. Thanks, Dietz Pröpper.
483: strtod now understands a negative exponent (oops, thanks Bertram Barth)
484: Port to arm-linux-gnu, but on the Netwinder I use for testing the
485: __dtostr does not work (I have no idea why!)
486: The MIPS port now uses (much smaller) non-PIC code. That means that
487: the applications you link against diet libc also have to be compiled
488: non-PIC. I suggest copying the CFLAGS from the diet libc Makefile.
489: Thanks to Ralf Bächle for helping me with this!
490: I made subdirectories for the architectures and use VPATH to override
491: VPATH so that make finds the source file automatically. That should
492: simplify the sources greatly.
493: Olaf Dreesen contributed Alpha support including setjmp and longjmp!
494: ARM and MIPS now also have setjmp and longjmp
495: "compile" and "load" are now make targets. Use them for djb programs.
496: added contrib/elftrunc.c which will remove unnecessary ELF headers.
497: Again, contributed from Olaf. Great work!
498:
499: 0.5.12:
500: printf also does signed numbers.
501: If you don't use atexit, dietlibc now does not link exit, only _exit.
502: *printf now correctly returns the number of bytes written.
503: Olaf contributed experimental sscanf and vsscanf implementations.
504: If passed NULL as buffer, snprintf will not write anything but still
505: return the number of bytes it would have written.
506: Initial MIPS port! (Oh, the agony!)
507: No setjmp and longjmp support yet! Please contribute!
508: I even implemented unified syscalls for MIPS. Still, MIPS code is
509: almost twice the size of SPARC code. If anyone knows why: please
510: tell me!
511:
512: 0.5.11:
513: I implemented new unified syscalls for x86, sparc and ppc, this time based
514: on .s files and not .c files, and I moved the syscalls into
515: subdirectores to clean the dietlibc sources up a little.
516: A binary consisting of printf("%s is %d\n","olaf",23) is now
517: 2864 bytes on sparc
518: 2488 bytes on intel
519: I kludgily implemented fprintf(stdout,... and fprintf(stderr,...
520: to make a few more applications work.
521: Olaf Dreesen also implemented some unified syscall stuff for x86.
522: He discovered that with our unified syscall interface it actually
523: costs <10 bytes total to make all system calls thread safe!
524: I implemented atexit() (can register up to 4 callbacks).
525: I implemented strtod and __dtostr (the opposite). Now we can add
526: floating point support to vsnprintf and sscanf!
527:
528: 0.5.10:
529: I actually saw that I can not only merge the errno handling code of
530: the system calls on x86, I can also merge the rest (including the
531: arguments) except for setting the system call number. All those
532: system calls are now just a jump to a unified system call handler.
533: I got rid of x86openclose again. The savings are substantial:
534: chown from embutils went from 7664 to 7184 bytes!
535: If I'd move the system call wrappers to assembly language, I could
536: even reduce the alignment (does not matter since it's just a jump
537: anyway) and get rid of the "ret" behind each jump (one byte per
538: system call!)
539:
540: 0.5.9:
541: added memchr, strpbrk, strstr, strtol, isspace (hehe)
542: fixed strdup
543: fixed return values for strcpy and strcat (thanks to Norbert Berzen)
544: Olaf Dreesen contributed a strtol and initial {sn|vsn|}printf implementation
545: (no signed integers, only strings and unsigned integers (but
546: supporting octal, hex and decimal). Thanks, Olaf! (by the way:
547: that code must be wonderful, I don't understand it at all *bg*)
548: Olaf's printf does understand padding like in "%08d" and "%8d" and
549: automatically pads pointers with '0'.
550: Rewrote the x86 start code, old: 22 instructions, new: 12 instructions.
551: Thanks to proton for inspiration on this.
552: The new x86 start code also does not reference exit any more, thus saving
553: 64 bytes for executables that don't call exit explicitly.
554: [insert maniacal laughter] EVERY BYTE COUNTS!1!! ;-)
555: Moved errno and environ to start.S, saving no byte binary size but
556: speeding up compilation and slightly shortening dietlibc.a ;-)
557: For x86: joined open and close into one assembler file, sharing the
558: errno handling. This is a feasibility test and it actually saves a
559: few bytes. I think I will reimplement the _syscall[1-6] macros on
560: all platforms now to share the errno handling code for them.
561:
562: 0.5.8:
563: fixed strchr to be able to look for 0.
564:
565: added _llseek, ftruncate, getpgid, getresgid, getresuid, getsid,
566: memccpy, memmove, mprotect, setregid, setresgid, setresuid, setreuid,
567: strncpy, swapon, truncate, strtok, strtok_r, strspn, strcspn (all
568: contributed by Olaf Dreesen)
569:
570: added execvp, getcwd
571:
572: fixed __xmknod
573:
574: Note: can it be that the ftw interface really is so broken that I
575: cannot implement it without having to implement some searching data
576: structure? I included an experimental ftw implementation that will
577: not follow symlinks.
578:
579: 0.5.7:
580: oops, if_nametoindex was broken!
581:
582: 0.5.6:
583: ported to ppc-linux.
584: fixed i386 sigsetjmp (I mistyped the function name)
585: included sigjmp.c
586:
587: 0.5.5:
588: added wait, sys_siglist, longjmp/setjmp/sigsetjmp for i386 and sparc
589: actually, it wasn't fork that wasn't working for sparc, it was pipe.
590: I fixed it now.
591: dietlibc/SPARC assumes -msupersparc (does not provide div, mul, etc)
592: fixed readdir to use getdents and not the intel inline asm
593:
594: 0.5.4:
595: ported to sparclinux (sparc32 only). Beware: does not work yet.
596: added raise, abort, readlink, strcat, geteuid, geteuid, wait3, access
597:
598: 0.5.3:
599: added tcsetattr and getenv to compile e3
600:
601: 0.5.2:
602: added vhangup, tcgetattr, isatty and memcmp for fgetty
603: (http://www.fefe.de/fgetty/)
604: added localtime from uC-libc.
605:
606: 0.5.1:
607: stat and friends actually work now. Yuck! Another case of
608: translation between kernel and userland. Why can't the kernel
609: people and the libc people simply agree on a standard?
610: removed many unnecessary includes to speed up compilation.
611: added -fomit-frame-pointer and i386 compilation target to reduce code size.
612: inlined socketcall to reduce code size.
613: "load" and "compile" are examples for djb code.
614:
615: 0.5:
616: Olaf Dreesen contributed a much smaller implementation of malloc and friends.
617: each object file is now treated with "strip -x -R .note -R .comment"
618: split each system call into a separate object file
619: added ntohs, htons, alarm, if_indextoname and if_nametoindex
620:
621: 0.4.1:
622: oops, the strchr implementation was wrong. Thanks Jens Laas!
623:
624: 0.4:
625: copied opendir and friends from uC-libc.
626: added getservent and getservby* in gerservent.c
627:
628: 0.3:
629: remove readdir system call
630: added getdents system call
631: added getpwnam/getpwuid implementation in getpwnam.c
632: added a few string functions (in str*.c)
633:
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