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