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