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