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