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