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1.208 fefe 50: remove syscalls.c directory, it is obsolete now with unified syscalls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