Annotation of dietlibc/CHANGES, revision 1.117
1.115 fefe 1: 0.11:
2: fix major oops in DNS routines (only with WANT_FULL_RESOLV_CONF enabled).
1.116 fefe 3: fix vsscanf bug (Thanks, David Chappell).
1.117 ! fefe 4: add floor, ceil and memchr prototypes.
! 5: add __builtin_expect and expect #defines for gcc versions below 3.0
1.115 fefe 6:
1.74 fefe 7: 0.10:
8: update getpagesize.
9: add personality.
1.75 fefe 10: add "%*s" and "%*.*s" support to vsnprintf.
1.76 fefe 11: add putchar (apparently arm-linux-gcc will substitute printf("\n")
12: with putchar('\n') behind your back...?!
1.77 fefe 13: import include/scsi/ from glibc.
1.78 fefe 14: add iopl.
1.80 fefe 15: add execl and sigdelset prototypes.
16: add getopt_long stuff to getopt.h (may compile but won't link).
1.81 fefe 17: add RPC headers (no code yet).
1.82 fefe 18: add mlockall, munlockall
1.83 fefe 19: make "diet gcc foo.c" work.
20: added Sun RPC code and removed as many warnings as possible in a
21: heroic act of self-mutilation.
22: added getproto* and getdtablesize for the RPC cruft :-(
1.84 fefe 23: added getpass. mount from util-linux actually compiles now!
24: fix the sig*set routines. mount actually works now *bg*
25: fix fwrite dividing by zero when trying to fwrite n records of size 0.
1.85 fefe 26: added an initial regex implementation (3500 bytes!!!).
1.87 fefe 27: add llseek and lseek64 with optional lseek fall-back.
1.88 fefe 28: add res_init.
29: add asprintf (ugh, what an ugly function).
1.89 fefe 30: expanded arpa/nameser.h to include backwards compatibility defines
1.90 fefe 31: add ut_name alias to ut_host in struct utmp.
32: add inet_ntop, inet_pton, gethostbyname2.
1.92 fefe 33: add sysinfo, recvmsg, sendmsg.
1.93 fefe 34: add endmntent, getmntent, setmntent.
1.94 fefe 35: fix fnmatch (thanks, Guillaume Cottenceau!)
1.96 fefe 36: add setenv.
37: remove __restrict from mntent.h, add __restrict__ removal alias for
38: older gcc versions in sys/cdefs.h.
39: add rlim_t, sig_atomic_t declarations.
40: add sigsetjmp #define for __sigsetjmp (oops).
41: (Thanks to Chris Siebenmann for these three bug reports)
1.97 fefe 42: add a gruesome hack to printf floating point to accept %f and kludge
43: together support for %.2f. Don't look at the code, please!
1.98 fefe 44: fixed tcsetpgrp (oops, this is embarassing! Thanks, Chris Siebenmann)
1.99 fefe 45: imported fix for entlib by Jeff Garzik.
1.100 fefe 46: add glob implementation from Guillaume Cottenceau (Thanks!!)
47: add libdl fragments from Olaf (Yeah! One step closer to dynamic linking!)
1.101 fefe 48: add REG_ICASE and word start/end handling to my regular expressions.
49: my regular expressions now actually match substrings (i.e. "foobar" to "bar").
1.102 fefe 50: wrap getcwd to comply to man page (the syscall returns the number of
51: bytes, not the buffer)
52: add realpath.
1.103 fefe 53: fix vfprintf.
1.104 fefe 54: fix *scanf %s zero termination.
55: add abs, labs, llabs.
1.105 fefe 56: add <sys/io.h>, ioperm syscall.
57: add flock to <sys/file.h>
1.106 fefe 58: fixes to bsearch and the regular expressions.
1.107 fefe 59: add fake herror.
1.108 fefe 60: add scandir and alphasort.
1.109 fefe 61: add killpg
1.110 fefe 62: implemented a gross hack to make libpthread compile when
63: dietfeatures.h does not define WANT_THREAD_SAFE (it's empty then).
1.111 fefe 64: add getaddrinfo and freeaddrinfo (man, what a fucked up interface!)
1.112 fefe 65: fix sigsuspend (syscall had completely fscked up arguments!)
1.113 fefe 66: RLIM_INFINITY from the kernel is broken. Thanks to Chris Siebenmann
67: for sending a patch.
1.114 fefe 68: add getserv*.
69: add WANT_FULL_RESOLV_CONF so that the DNS routines use "domain" and
70: "search" from resolv.conf.
1.74 fefe 71:
1.73 fefe 72: 0.9:
1.65 fefe 73: fixed initgroups (oops)
1.66 fefe 74: Cleanup appending file open for stdio (thanks, James Antill)
75: imported vfprintf fix from James Antill.
1.67 fefe 76: add fnmatch
77: change index, rindex and bcmp as weak ELF symbols (were #defined before)
1.68 fefe 78: Olaf added character classes to *scanf.
1.69 fefe 79: Put object and library files into a separate directory (bin-$ARCH).
80: Add "cross" make target to make all architectures.
81: Add "diet" program and man page.
1.70 fefe 82: Add getgrnam, getgrgid
1.71 fefe 83: Add cfmakeraw (Thanks, Antonio Musumeci)
1.72 fefe 84: localtime won't call gettimeofday when the tzfile parser is used.
1.65 fefe 85:
1.64 fefe 86: 0.8:
1.34 fefe 87: vsnprintf(0,...) estimated the length of strings with a padding width
88: incorrectly.
1.35 fefe 89: new reboot() from Olaf.
1.36 fefe 90: added prototypes for getsockopt and setsockopt.
1.39 fefe 91: added experimental sem* and shm*
1.38 fefe 92: define EXIT_SUCCESS and EXIT_FAILURE
1.40 fefe 93: added setvbuf (only changes mode, not buffer)
1.41 fefe 94: added dietwarning.h (woohoo, linker warnings!) and used it to warn of
95: insecurity (system, sprintf) or bloat (printf and stdio).
1.42 fefe 96: added qsort() and bsearch(). Benchmark on 1000 random ints:
97: glibc: 679414 cycles qsort and 3352 cycles bsearch
98: diet libc: 300010 cycles qsort, 553 cycles bsearch
99: I have no idea why glibc is so slow.
1.43 fefe 100: added __isnan (references by libm.a from glibc).
101: added popen() and pclose(). Now the diet libc can link slsh (from
102: S-Lang!)
1.44 fefe 103: corrected usleep. It was more of an msleep until now.
1.45 fefe 104: corrected __dtostr (it looped when trying to format "0.0").
105: several fixes to stdio (thanks to S-Lang's excellent test suite!)
1.46 fefe 106: added ungetc (does it work?)
1.47 fefe 107: added inet_aton (yuck!)
1.50 fefe 108: added gethostbyname, gethostbyaddr, gethostbyname_r and gethostbyaddr_r
1.48 fefe 109: added h_errno and __h_errno_location
110: added inet_ntoa
1.49 fefe 111: added setpgrp and getpgrp, strsignal and execv (thanks, Olaf)
1.51 fefe 112: add bcopy, index, rindex macros
113: add isgraph and isxdigit
1.52 fefe 114: add strftime (ugh!!!)
1.53 olaf 115: Olaf fixed strftime, gmtime_r leap year bug.
1.54 fefe 116: Jeff Garzik contributed a spec file. I put it in contrib and hope
117: everbody knows what to do with it...
118: Olaf checked in a ton of libpthread stuff.
1.55 fefe 119: added mkstemp using /dev/urandom (harder to guess than getpid()).
1.56 fefe 120: add large file backwards compatibility support (so gzip will run on
121: kernel 2.2 and 2.0)
1.57 fefe 122: added shutdown
1.58 fefe 123: added nice
124: added pseudo-locale support for is* (they are now weak aliases,
125: isupper -> __isupper_ascii etc). So, for example, liblatin1 can
126: overwrite the default is* functions.
1.59 fefe 127: added liblatin1.a
1.60 fefe 128: added tzfile implementation (does it work for anyone else?)
1.61 fefe 129: added syslog(3) (thanks to Rene Müller!)
1.62 fefe 130: Jeff Garzik contributed getgr*, getpw* and getsp* in one tiny package.
131: Thanks!
1.63 fefe 132: merged duplicate code in execv and execvp into exec_lib.o
1.34 fefe 133:
1.21 fefe 134: 0.7.2:
135: added several prototypes to already implemented functions and
136: <sys/reboot.h>. Thanks for Abraham for pointing this out.
1.22 fefe 137: added prototypes for process group and dup syscalls. Thanks to
138: Abraham again. He also contributed an implementation for daemon(),
139: an ugly BSD hack. I decided to diversify the lib/ directory a
140: little and now created a libugly/ directory for stuff like system()
141: and daemon() ;-)
142: added libstdio and moved all that stdio crap from lib/ there. The
143: idea is to start separating now what we will separate for shared
144: libraries anyway.
1.26 fefe 145: optimized x86 unified-syscall by Olaf.
1.27 fefe 146: added limits.h, removed __ARCHBITS from endian.h (use __WORDSIZE from
147: limits.h instead)
148: added remove.c and enough cruft to limits.h to make it compile lzo,
149: lzop and bzip2.
1.28 fefe 150: added mktime, asctime_r, asctime and ctime (needed for gzip).
151: Someone will need to implement a reader for the glibc localtime file
1.31 fefe 152: format some day (man tzfile, ugh!) :-(
1.29 fefe 153: added unlink prototype to unistd.h.
154: added gmtime and gmtime_r.
1.31 fefe 155: fixed sparc unified syscall error handling (please upgrade!).
1.30 fefe 156: removed readdir glibc compatibility cruft.
1.31 fefe 157: removed stat glibc compatibility cruft.
1.32 fefe 158: oops, my fread was broken for pipes.
1.33 fefe 159: Olaf found a bug in pipe() for sparc, too.
1.21 fefe 160:
1.9 fefe 161: 0.7.1:
1.11 fefe 162: optimized away the static arrays from __ltostr and __lltostr.
163: optimized away the static arrays (and more!) from strtoul and strtoull.
164: added system (by Olaf).
1.12 fefe 165: added tolower and toupper
1.13 fefe 166: added getopt from Olaf (~600 bytes on x86!)
1.14 fefe 167: added clone for mips (by Olaf).
168: fixed longjmp and setjmp on sparc not to require glibc include files.
1.15 olaf 169: added pause for all (by Olaf).
1.17 fefe 170: added __attribute__ ((__const__)) to ctype.h
1.16 fefe 171: added isupper and islower.
172: added putc and putchar as macros.
1.17 fefe 173: added strcasecmp and strncasecmp (thanks to Abraham vd Merwe for
174: insightful discussions and patches I partially used for the last three)
1.18 fefe 175: added getpriority and setpriority (also by Abraham)
1.19 fefe 176: oops, I broke strtoul in a recent optimization attempt.
1.20 fefe 177: oi, setjmp and longjmp were broken on other platforms, too!
178: Thanks to Sébastien Côté for reporting this.
1.9 fefe 179:
180: 0.7:
1.6 olaf 181: clone support for i386,alpha,arm and sparc by Olaf.
1.1 cvs 182: Initial dynamic loading glue for i386, also by Olaf.
183: We don't have a dynamic loader yet, so this is not yet usable.
184: added readv, sigdelset, sigaltstack, sigfillset, sigismember, usleep,
185: vsprintf, writev, all by Olaf.
1.2 fefe 186: imported readdir fix from Guillaume. Mhh, can the kernel interface
187: really be this broken?
1.3 fefe 188: Found a kludgy way to detect whether the kernel includes define struct
189: stat64 (they also define STAT64_HAS_BROKEN_ST_INO). If this does
190: not work for you, please tell me!
1.4 fefe 191: Removed bogus __seek_types enum, it's a bunch of #defines now.
1.7 fefe 192: Fixed stdio line buffering. The code was already there but I forgot
193: to mark stdio and stdout as line buffered. This should really be
194: done dynamically using isatty, though.
1.8 fefe 195: Removed superfluous "if (1)" in execvp.c
1.1 cvs 196:
197: 0.6.14:
198: *scanf did not append the 0 byte for %s.
199: added creat and changed creat to call open directly instead of open64.
200: did for fread what 0.6.10 did for fwrite.
201: repaired buffered stdio a little (line buffering is still not
202: supported).
203: [All of these bugs have been reported by Guillaume. Thanks!]
204: added __pure__ to strchr and strrchr in <string.h>
205:
206: 0.6.13:
207: included COPYING to make clear that the diet libc is covered by the
208: GNU General Public License (and _not_ the LGPL). That means that
209: you need to obtain a license from me if you want to use the diet
210: libc in a proprietary program that you want to distribute.
211: The x86 unified syscall swapped arguments #4 and #5 and noone
212: noticed until now! Thanks to Guillaume Cottenceau for reporting
213: this!
214: The malloc had a subtle bug with small allocations that could cause
215: segfault. Guillaume reported it, Olaf fixed it.
216:
217: 0.6.12:
218: added assert, statfs and fstatfs
219: added include/net/if.h so fget compiles again.
220:
221: 0.6.11:
222: added putenv.
223:
224: 0.6.10:
225: fixed fwrite. It returned the number of bytes written, not the number
226: of records. Thanks to Albert D. Cahalan for pointing this out.
227: fixed fgets. It returned EOF on empty lines. Thanks, Erik Frey.
228: added brk and sbrk. harold@nb.com.sg made me do it.
229:
230: 0.6.9:
231: fixed execvp not to return on ENOENT
232: did for {open|read|close|seek|tell}dir what I did for stat before.
233: The glibc compatibility part is currently non-functional.
234: fixed white space handling in sscanf " (" would not match " (".
235: fixed printf to accept 'l' flag.
236: fixed getpwuid (ignored last line)
237:
238: 0.6.8:
239: Olaf contributed initial thread-safe syscalls for i386, alpha, sparc,
240: mips and arm. I did the one for ppc. They can be enabled in dietfeatures.h.
241: added strlcpy and strlcat from OpenBSD.
242: added stat64, fstat64 and lstat64.
243: added endian.h and made ending of strlen.c endianness-aware
244: added string routines size tweak to dietfeatures.h. Most of the
245: string routines have been unrolled. This is up to three times as
246: fast but creates up to three times larger code. Now you can disable
247: the unrolling.
248: added sendfile.
249: I also added pread. It works on x86 and sparc but not on ppc and mips.
250: I have no idea what's going on. strace disagrees with the kernel.
251: Can anyone help? I asked the Linux kernel mailing list for help, too.
252: added a few aliases of the type __libc_open for open. nm on
253: libpthreads.so indicates that we will need them.
254:
255: 0.6.7:
256: the sources now compile without warnings with -Wall.
257: printf now prints "(null)" when %s is passed NULL. This can be
258: removed with WANT_NULL_PRINTF in dietfeatures.h
259: added vfprintf, execl, ttyname.
260: stat, lstat and fstat are now #defined to __dietstat, __dietlstat and
261: __dietfstat so they can use the normal kernel struct stat.
262: stat, lstat and fstat are now C wrappers that convert to the glibc
263: struct stat. So we can avoid that overhead for programs that use
264: dietlibc headers.
265:
266: 0.6.6:
267: changed the Makefiles so you can now set CFLAGS on the command line
268: added memccmp (analogous to memccpy) and strncmp.
269: Olaf fixed another bug in the sparc unified syscall.
270: Paul Clifford contributed a C version of his strlen.S that is much
271: more efficient than the previous strlen on all platforms! It also
272: looks like technology from Roswell. ;-}
273: added a "real" stdio. Well, almost. Please contribute!
274: added dietfeatures.h so you can remove features you don't need.
275: removed debug code from vsnprintf that changed \0 to ' ' (argh!).
276: stdio now works with simple programs and minigzip from libz.
277: stdio uses some major trickery to avoid linking the stdio, stderr and
278: stdout (and reserving space for them) when they are not used.
279:
280: 0.6.5:
281: Red Plait <redplait@ixcelerator.com> found several bugs in diet libc,
282: most of them bugs in the new header files, but also missing sigset
283: functions.
284: Paul Clifford contributed an assembly strlen.S for ARM and fixed
285: several bugs.
286: Fixed ppc/setjmp and mips/pipe.
287: Olaf contributed a new sparc unified syscall.
288:
289: 0.6.4:
290: declared is* static inline in getservent.
291: added assert_fail, strtoul, isalpha, isdigit, isalnum, isascii.
292: changed strlen to return 0 when passed NULL.
293: new, much smaller unified syscall for MIPS. Thanks to Olaf the Mad
294: Scientist who actually implemented this without access to a MIPS
295: box, just from reading the architecture manual. And it worked out
296: of the box.
297: started a set of system includes, mainly so that I can use lcc and
298: my alpha-linux cross compiler (which is unable to cross-compile
299: glibc). diet libc can now be compiled without any include files
300: from a normal libc. The includes do declare more than diet libc
301: currently delivers and they are still far from complete for real
302: applications.
303: I will only add assembly versions that are smaller _and_ faster than
304: the C version. Larger routines are only accepted if they are called
305: very often and are substantially faster.
306: added i386 assembly strchr, which is smaller and faster than the old
307: version. It is, however, larger than the version contributed by
308: proton (thanks, anyway).
309: added i386 strlen (31% faster, 14% smaller)
310: "make t" will now create a map file called "mapfile".
311:
312: 0.6.3:
313: added sys_errlist, strerror and perror
314: added isblank
315: added atol
316:
317: 0.6.2:
318: mmap for ARM didn't compile. Thanks, Paul!
319:
320: 0.6.1:
321: split mmap into the architecture specific subdirectories.
322: getenv now copes with environ==NULL, thanks Paul Clifford.
323: Paul also contributed a smaller ARM startup code.
324:
325: 0.6:
326: strcat returned the wrong result. Thanks, Dietz Pröpper.
327: strtod now understands a negative exponent (oops, thanks Bertram Barth)
328: Port to arm-linux-gnu, but on the Netwinder I use for testing the
329: __dtostr does not work (I have no idea why!)
330: The MIPS port now uses (much smaller) non-PIC code. That means that
331: the applications you link against diet libc also have to be compiled
332: non-PIC. I suggest copying the CFLAGS from the diet libc Makefile.
333: Thanks to Ralf Bächle for helping me with this!
334: I made subdirectories for the architectures and use VPATH to override
335: VPATH so that make finds the source file automatically. That should
336: simplify the sources greatly.
337: Olaf Dreesen contributed Alpha support including setjmp and longjmp!
338: ARM and MIPS now also have setjmp and longjmp
339: "compile" and "load" are now make targets. Use them for djb programs.
340: added contrib/elftrunc.c which will remove unnecessary ELF headers.
341: Again, contributed from Olaf. Great work!
342:
343: 0.5.12:
344: printf also does signed numbers.
345: If you don't use atexit, dietlibc now does not link exit, only _exit.
346: *printf now correctly returns the number of bytes written.
347: Olaf contributed experimental sscanf and vsscanf implementations.
348: If passed NULL as buffer, snprintf will not write anything but still
349: return the number of bytes it would have written.
350: Initial MIPS port! (Oh, the agony!)
351: No setjmp and longjmp support yet! Please contribute!
352: I even implemented unified syscalls for MIPS. Still, MIPS code is
353: almost twice the size of SPARC code. If anyone knows why: please
354: tell me!
355:
356: 0.5.11:
357: I implemented new unified syscalls for x86, sparc and ppc, this time based
358: on .s files and not .c files, and I moved the syscalls into
359: subdirectores to clean the dietlibc sources up a little.
360: A binary consisting of printf("%s is %d\n","olaf",23) is now
361: 2864 bytes on sparc
362: 2488 bytes on intel
363: I kludgily implemented fprintf(stdout,... and fprintf(stderr,...
364: to make a few more applications work.
365: Olaf Dreesen also implemented some unified syscall stuff for x86.
366: He discovered that with our unified syscall interface it actually
367: costs <10 bytes total to make all system calls thread safe!
368: I implemented atexit() (can register up to 4 callbacks).
369: I implemented strtod and __dtostr (the opposite). Now we can add
370: floating point support to vsnprintf and sscanf!
371:
372: 0.5.10:
373: I actually saw that I can not only merge the errno handling code of
374: the system calls on x86, I can also merge the rest (including the
375: arguments) except for setting the system call number. All those
376: system calls are now just a jump to a unified system call handler.
377: I got rid of x86openclose again. The savings are substantial:
378: chown from embutils went from 7664 to 7184 bytes!
379: If I'd move the system call wrappers to assembly language, I could
380: even reduce the alignment (does not matter since it's just a jump
381: anyway) and get rid of the "ret" behind each jump (one byte per
382: system call!)
383:
384: 0.5.9:
385: added memchr, strpbrk, strstr, strtol, isspace (hehe)
386: fixed strdup
387: fixed return values for strcpy and strcat (thanks to Norbert Berzen)
388: Olaf Dreesen contributed a strtol and initial {sn|vsn|}printf implementation
389: (no signed integers, only strings and unsigned integers (but
390: supporting octal, hex and decimal). Thanks, Olaf! (by the way:
391: that code must be wonderful, I don't understand it at all *bg*)
392: Olaf's printf does understand padding like in "%08d" and "%8d" and
393: automatically pads pointers with '0'.
394: Rewrote the x86 start code, old: 22 instructions, new: 12 instructions.
395: Thanks to proton for inspiration on this.
396: The new x86 start code also does not reference exit any more, thus saving
397: 64 bytes for executables that don't call exit explicitly.
398: [insert maniacal laughter] EVERY BYTE COUNTS!1!! ;-)
399: Moved errno and environ to start.S, saving no byte binary size but
400: speeding up compilation and slightly shortening dietlibc.a ;-)
401: For x86: joined open and close into one assembler file, sharing the
402: errno handling. This is a feasibility test and it actually saves a
403: few bytes. I think I will reimplement the _syscall[1-6] macros on
404: all platforms now to share the errno handling code for them.
405:
406: 0.5.8:
407: fixed strchr to be able to look for 0.
408:
409: added _llseek, ftruncate, getpgid, getresgid, getresuid, getsid,
410: memccpy, memmove, mprotect, setregid, setresgid, setresuid, setreuid,
411: strncpy, swapon, truncate, strtok, strtok_r, strspn, strcspn (all
412: contributed by Olaf Dreesen)
413:
414: added execvp, getcwd
415:
416: fixed __xmknod
417:
418: Note: can it be that the ftw interface really is so broken that I
419: cannot implement it without having to implement some searching data
420: structure? I included an experimental ftw implementation that will
421: not follow symlinks.
422:
423: 0.5.7:
424: oops, if_nametoindex was broken!
425:
426: 0.5.6:
427: ported to ppc-linux.
428: fixed i386 sigsetjmp (I mistyped the function name)
429: included sigjmp.c
430:
431: 0.5.5:
432: added wait, sys_siglist, longjmp/setjmp/sigsetjmp for i386 and sparc
433: actually, it wasn't fork that wasn't working for sparc, it was pipe.
434: I fixed it now.
435: dietlibc/SPARC assumes -msupersparc (does not provide div, mul, etc)
436: fixed readdir to use getdents and not the intel inline asm
437:
438: 0.5.4:
439: ported to sparclinux (sparc32 only). Beware: does not work yet.
440: added raise, abort, readlink, strcat, geteuid, geteuid, wait3, access
441:
442: 0.5.3:
443: added tcsetattr and getenv to compile e3
444:
445: 0.5.2:
446: added vhangup, tcgetattr, isatty and memcmp for fgetty
447: (http://www.fefe.de/fgetty/)
448: added localtime from uC-libc.
449:
450: 0.5.1:
451: stat and friends actually work now. Yuck! Another case of
452: translation between kernel and userland. Why can't the kernel
453: people and the libc people simply agree on a standard?
454: removed many unnecessary includes to speed up compilation.
455: added -fomit-frame-pointer and i386 compilation target to reduce code size.
456: inlined socketcall to reduce code size.
457: "load" and "compile" are examples for djb code.
458:
459: 0.5:
460: Olaf Dreesen contributed a much smaller implementation of malloc and friends.
461: each object file is now treated with "strip -x -R .note -R .comment"
462: split each system call into a separate object file
463: added ntohs, htons, alarm, if_indextoname and if_nametoindex
464:
465: 0.4.1:
466: oops, the strchr implementation was wrong. Thanks Jens Laas!
467:
468: 0.4:
469: copied opendir and friends from uC-libc.
470: added getservent and getservby* in gerservent.c
471:
472: 0.3:
473: remove readdir system call
474: added getdents system call
475: added getpwnam/getpwuid implementation in getpwnam.c
476: added a few string functions (in str*.c)
477:
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