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