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