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