Annotation of dietlibc/CHANGES, revision 1.255
1.244 fefe 1: 0.16:
2: "diet -v" or "diet -Os" segfaulted without further arguments.
1.246 fefe 3: Andre found two very embarassing bugs in my four lines of md5 glue.
4: I need to get more sleep.
1.247 fefe 5: Thanks Ogrisegg found that ptrace does not work as documented and
6: provided a wrapper that emulates the glibc behaviour.
1.248 fefe 7: Dirk Engling saved 8 bytes and 4 cycles in the ARM clone()
8: fix ptrace.h for S/390 and ARM
9: provide a PORTING document so we don't lose track of which file need
10: to be touched to port the diet libc to a new platform.
1.249 fefe 11: remove a few warnings
12: provide a prototype for usleep.
1.250 fefe 13: make __dtostr work on ARM by using long instead of long long.
14: Idea by Dirk Engling.
1.251 fefe 15: fix an argument counting bug in *scanf (Thomas Ogrisegg)
1.252 fefe 16: Forgot an #endif in asm/sigcontext.h (Mike Castle)
1.253 fefe 17: Kurt Garloff sent in patches to
18: fix struct termios on non-x86 architectures
1.254 fefe 19: printf("%+05d\n",500) was broken (Raimar Falke told me, Olaf fixed it)
20: create libcompat.a (and move daemon to it)
1.255 ! fefe 21: add getdelim and getline
! 22: *printf now recognize 'z' integer flag (and ignore it)
1.244 fefe 23:
1.224 fefe 24: 0.15:
1.225 fefe 25: vfork sucks. I reverted to the old behavior where vfork==fork.
1.226 fefe 26: fix bsearch (and remove i386 assembly bsearch, needs to be redone).
1.227 fefe 27: Thanks Ogrisegg sent a patch to make the PA-RISC unified syscall
28: thread-safe!
1.228 fefe 29: remove vfork and add alarm to dynamic syscalls.
30: fix diet-dyn to link in dyn_dstop.o and not dyn_stop.o.
1.229 fefe 31: The MD5 code generated unaligned accesses when passed an unaligned
32: pointer on little endian ARM and MIPS.
33: MIPS unified syscall didn't compile anymore.
34: Put up new mipsel target to cross compile for little endian mips.
35: The mips target will again explicitly set endianness to big endian.
36: Compiling natively on a MIPS box should not touch the endianness.
1.230 fefe 37: Duh, when we removed return0, we broke tzset when the time zone parser
38: was disabled. Uwe Ohse noticed this. Thanks!
39: Fix gethostbyname to match host names case insensitively in /etc/hosts.
40: Oops, this was reported 6 weeks ago but I overlooked the email.
41: Thanks, Denis Rachal!
1.231 fefe 42: vsnprintf's zero termination was broken.
1.233 fefe 43: Uwe Ohse found a few more bugs:
44: Remove WANT_BUGGY_GLIBC_STRSEP. The Linux man page is broken, glibc
45: does it correctly.
46: Make inet_aton use strtoul instead of strtol
47: fdopen would close the file descriptor if it could not malloc the
48: buffer.
49: strftime updates.
50: Make _FILE_OFFSET_BITS includes -Wundef clean
51: Andre found a typo in endian.h for big endian mips
1.234 fefe 52: Ryan told me that fmod was not included in libm. Oops.
1.235 fefe 53: strstr(whatever,"") returned NULL, not whatever. Found by a new test
54: suite entry for strstr that I wrote.
1.245 fefe 55: Thomas Ogrisegg suggested or sent patches for the following:
1.236 fefe 56: add <asm/sigcontext.h> for profiling support.
57: make strncpy a #define in string.h to save a few bytes.
1.241 fefe 58: an i386 assembler getenv implementation (roughly half the size)
59: add grantpt, ptsname, unlockpt
1.236 fefe 60: add a getenv test suite entry.
1.238 fefe 61: Andre contributed an ARM assembler md5 implementation and he fixed mmap
62: on ARM.
63: add glibc macro names in sys/reboot.h. Mentioned by Laurent G. Bercot
1.239 fefe 64: getservent_r did not parse lines without aliases. Thanks, Jaroslav
65: Macodiseas!
1.240 fefe 66: fix MIPS start code (argv[0] was always corrupt)
1.241 fefe 67: removed annoying -Wconversion gcc switch
1.242 fefe 68: add -v to diet.c and fix MIPS CFLAGS in diet. Thanks, Johannes Stezenbach
1.243 fefe 69: Kurt Garloff sent these diffs:
70: add fdatasync (and make it a pthread cancellation point)
71: numerous alpha issues, like using .quad instead of .long for
72: offsets, change strip to -strip in Makefile (so a failing strip does
73: not abort the make), try to be more friendly to the gcc 2.96 that
74: SuSE 7.1 AXP ships with.
1.224 fefe 75:
1.209 fefe 76: 0.14:
1.224 fefe 77: fix brk again (missing __brk, trivial oversight)
1.210 fefe 78: a new i386/atol.S that is 4 bytes smaller (and faster, too!). Thanks,
79: Thomas Ogrisegg!
1.211 fefe 80: Thomas also contributed a PA-RISC port including testandset, so
81: libpthread will work once we implement clone! Great work, Thomas.
1.212 fefe 82: made the fake locale more believable.
83: If you need gettext, use http://www.ca.postgresql.org/~petere/gettext.html
1.213 fefe 84: moved _exit into the unified syscall on x86.
1.214 fefe 85: Uwe Ohse found many more bugs:
86: getpass EINTR handling, ttyname, sysconf_cpus with SLASH_PROC_OK,
87: liblatin1 was more or less completely broken if you gave it chars as
88: arguments, not ints (signedness). execvp had a buffer overflow in
89: case a PATH element exceeded PATH_MAX, but it's not a security
90: problem since setuid programs need to set their path to some known
91: value anyway.
1.219 fefe 92: hasmntopt did not work with foo=bar style options
1.217 fefe 93: Uwe also improved ftw's stack usage.
1.214 fefe 94: Put movl instead of popl rationale in comment in i386/unified.S since
95: three people have suggested saving a few bytes with popl now ;)
1.215 fefe 96: I discovered __attribute__((malloc)) and started using it. For gcc 3,
97: it improves the optimizer when functions return malloced pointers.
1.216 fefe 98: Steven Rostedt pointed out that my setvbuf was broken with regard to
99: size==0 and sent a patch to fix it.
1.218 fefe 100: Thomas Ogrisegg made setenv smaller.
1.220 olaf 101: Olaf: implemented the parisc clone and an atomic testandset, modified the
102: libpthread to respect the parisc UPgrowing stack. still non functional,
103: because the unified syscall uses errno :(
1.221 fefe 104: tcgetospeed read from the wrong termios field. Thanks, Gunnar Ritter!
1.222 fefe 105: Fixed asprintf (relied on vsnprintf(NULL,...) to return length but
106: don't write anything which was no longer the case. It also
107: allocated one byte unnecessarily, which Uwe Ohse found.
1.223 fefe 108: Fix ttyname (readlink does not \0-terminate, forgot to do that).
1.209 fefe 109:
1.193 fefe 110: 0.13:
1.194 fefe 111: add readdir64 and automatic mapping if _FILE_OFFSET_BITS == 64
1.199 fefe 112: make diet not include the linker safeguard stuff when preprocessing
1.207 fefe 113: Olaf: port to S/390!
1.196 leitner 114: me: fix vfork (it was put into dietlibc.a twice)
1.197 leitner 115: res_query did not initialize last
1.199 fefe 116: diet (not diet-dyn, of course) now adds -static to the gcc command line
1.198 leitner 117: fixed fflush on input streams (tic from ncurses exposed this)
1.199 fefe 118: duh, there is an alarm system call, too, so we use it and not setitimer
1.200 fefe 119: fix comparison in gmtime_r that caused Jan 1 to be converted to Dec 32.
1.201 fefe 120: rewrote __dtostr (it also has one more argument now)
1.205 fefe 121: Thanks to Erik Troan for bringing these to my attention:
1.204 fefe 122: make putenv behave like glibc (putenv("HOME") == unsetenv("HOME"))
123: fix strncat for the case where n == 0 (security implications?)
124: fix bsearch (it didn't find the very last element in the array, same
125: bug in both the C and the i386 assembly version).
1.205 fefe 126: fixed FNM_PATHNAME in fnmatch
1.204 fefe 127: fix brk (the syscall was documented incorrectly in the Linux man page)
128: Thanks, Thomas Ogrisegg!
1.205 fefe 129: added negated character classes to fnmatch (not required by POSIX)
1.206 fefe 130: make the utmp routines open utmp read-only if read-write doesn't work.
1.208 fefe 131: remove syscalls.c directory, it is obsolete now with unified syscalls
1.193 fefe 132:
1.164 fefe 133: 0.12:
134: more contributions from Frank Klemm.
1.165 fefe 135: iconv can now do UCS-2, too.
1.167 fefe 136: Imported several x86 assembly routines from Wouter van Kleunen.
1.166 fefe 137: Lots of bug fixes, and several more i386 specific versions of common
138: routines to make them smaller.
1.168 fefe 139: add memmem (a GNU extension that looks useful)
1.170 fefe 140: several changes from Michal Ludvig: inttypes.h gets C99 macros,
1.168 fefe 141: add pivot_root syscall, %n for *scanf.
1.169 fefe 142: add adjtimex (thanks, Laurent BERCOT)
1.171 fefe 143: add Frank Klemm's optimized md5
1.172 fefe 144: add -Os option to diet (see diet.1).
1.173 fefe 145: several IPv6 constants and HZ were missing, thanks Johannes Kloos.
1.174 fefe 146: add 32-bit uid/gid syscalls.
1.175 fefe 147: add rand48 (thanks, Johannes Kloos)
1.176 fefe 148: fixed a lot of bugs in getopt* (thanks, Johannes)
1.177 fefe 149: add strxfrm and tweak limits.h. glib-1.3.8 now compiles without changes.
150: add a few more module syscalls. modutils-2.4.9 now compiles without changes.
151: fix gethostent alias list termination. Major oops.
1.178 fefe 152: add execle and two DNS constants (from Johannes Kloos).
1.179 fefe 153: opendir did not close-on-exec (thanks, Laurent Bercot).
1.180 fefe 154: DNS will now properly signal errors and set h_errno.
155: A few more cleanups (thanks, Andreas Jabs and Matthias Andree).
1.181 fefe 156: Added an uber-cool linker safeguard feature! Idea by Matthias Andree.
157: If you enable WANT_SAFEGUARD in dietfeatures.h, diet will include an
158: external reference to a symbol that is only in the diet libc. So,
159: when you accidentally link a diet libc compiled object file against
160: glibc, the linker will barf. This will bloat your object files, but
161: you can remove all the references with "strip -R .note" from
162: the binaries in the end (which you should do anyway).
1.182 fefe 163: fix ARM unified syscall (select did not work).
1.183 fefe 164: add getpwent_r ala glibc and replace getpwent
165: do the same for getgrent and getspent
166: remove entlib (new code is smaller)
1.184 fefe 167: rewrite getserv* to use parselib (and provide ..._r, too)
1.185 fefe 168: add getpwnam_r and getpwuid_r
1.186 fefe 169: rewrite getproto* to use parselib (and protive ..._r, too)
1.187 fefe 170: Olaf muddled with the dynamic linker. It's a clean-room
171: implementation in the sense that it once worked for Olaf in a clean
172: room ;)
1.188 fefe 173: add if_nameindex and if_freenameindex.
174: fixed arm unified syscalls to work with current binutils (; is no
175: longer a line separator but starts a comment, switched to .macro)
1.189 fefe 176: changed all st_[cma]time types to signed long so comparisons against
177: LONG_MIN will work correctly. (GNU tar does this)
1.190 fefe 178: fixed two bugs regarding ungetc.
179: add getusershell, setusershell, endusershell (for vs_ftpd)
180: add prctl, dirfd (also for vs_ftpd)
1.191 fefe 181: fixed strftime (was completely hosed)
1.192 fefe 182: added real make install target
1.164 fefe 183:
1.115 fefe 184: 0.11:
185: fix major oops in DNS routines (only with WANT_FULL_RESOLV_CONF enabled).
1.116 fefe 186: fix vsscanf bug (Thanks, David Chappell).
1.117 fefe 187: add floor, ceil and memchr prototypes.
188: add __builtin_expect and expect #defines for gcc versions below 3.0
1.118 fefe 189: cleaner errno vs __errno_location handling
190: add placeholder iconv (iconv_open will always return EINVAL)
191: try to remove kernel 2.4 header dependency in IPv6 sockaddr_in6
192: initialization of getaddrinfo.
1.119 fefe 193: fix vsnprintf %X (printed lower case)
1.120 fefe 194: I wrote a new getopt. It appears to actually work (it is POSIX
195: compliant, it does not sort argv like the GNU version) and is only
196: a little over 300 bytes on x86.
1.121 fefe 197: Guillaume Cottenceau just wrote me that strncat should be even more
198: broken than it already is: it should append n bytes AND THEN \0!
199: I wonder how many programmers have produces off-by-one errors here...
1.122 fefe 200: Fix regexec offset return. autoconf now believes that diet libc has
201: POSIX regular expressions.
1.123 fefe 202: Fix fnmatch (a/b/* matched a/b/c/d even if FNM_PATHNAME was set)
1.124 fefe 203: Fix regular expression match for x* when there is no x at all.
1.125 fefe 204: Fix memory leak in error case in gethostbyname(2|). Thanks, Dietz Pröpper.
1.126 fefe 205: Add %h to vsnprintf.
1.127 fefe 206: Add FAQ.
1.128 fefe 207: Make %h work for signed numbers and add %hh to vsnprintf.
208: initgroups ignored the group argument :-(
209: remove printf references and nested functions from glob.
1.129 fefe 210: added an errno in libpthread that will display a prominent linker
211: warning.
1.131 fefe 212: started getting rid of kernel headers. Big task! :-(
1.130 fefe 213: add res_mkquery. The diet libc can now compile and link mtr.
1.132 olaf 214: Olaf: added a lot of code in libdl (not yet complete), changed the
215: startup code to make it work with his libdl and ld.so (needs still work
216: too)
1.134 fefe 217: __dns_readstartfiles only took the first domain or search path.
218: Thanks, Anthony de Boer
1.133 olaf 219: Olaf: added clone and a new unified_syscall for PowerPC
220: also dynlinker is now available (i386 only at this time)
1.135 fefe 221: crufted together a stdarg.h implementation from the various gcc headers.
1.136 fefe 222: implement getopt_long (ugh, the GNU people need professional help)
1.137 fefe 223: fixed word delimiters in regex (they looked for space, i.e. "," did
224: not work as delimiter)
1.138 fefe 225: errno.h now declares sys_errlist and sys_nerr.
1.143 fefe 226: added mkdtemp.
1.142 fefe 227: Uwe Ohse reported all of the following bugs:
228: ttyname should return 0 if !isatty.
229: realpath returns NULL if "." cannot be opened
230: putenv erroneously accepted (and mishandled) entries without "=".
231: popen returned 255 instead of 127 if /bin/sh could not be run.
232: fgetc did not set the internal EOF indicator on EOF.
233: bsearch contained an assumption about integer arithmetic overflow
234: behavior.
235: system did not set SIGCHLD and thus contained a race.
236: popen did not set close-on-exec and could leak an fd on malloc error.
1.147 fefe 237: daemon did not check whether open returns an fd below 3
238: perror did not save errno.
1.144 olaf 239: Olaf: Peter Jones reported some problems with perror; strerror had the
240: same problem.
241: Peter also posted a patch to atexit/exit. With some modifications it is
242: now implemented.
1.145 fefe 243: Unbuffered stdio and ungetc can no longer be disabled. I will try to
244: implement part of it using ELF weak symbols.
1.146 fefe 245: Added minimal sysconf (tehe) from David Chappell.
1.148 fefe 246: Added overflow handling for strtoul and strtol.
1.149 fefe 247: Added WANT_ETC_HOSTS in dietfeatures.h and made gethostbyname/2 use
248: it before falling back to DNS if enabled.
1.150 fefe 249: Added a littie backwards compatibility cruft for gpm (man, do these
250: sources stink!)
1.151 fefe 251: Added openpty.
1.152 fefe 252: Squeeze a few bytes off the is* routines, courtesy of Peter Jones.
1.154 fefe 253: Fix fseek return value.
1.155 fefe 254: Add dirname and basename.
1.156 fefe 255: Add a few i386 math routines contributed by Frank Klemm.
1.157 fefe 256: Fixed getservent (did not allow _ and - in the aliases).
257: Thanks, Oden Eriksson
1.158 fefe 258: Added a float.h so configure believes we have ANSI header files.
259: Fix a lot more stdio bugs that Uwe Ohse pointed out.
1.162 fefe 260: Olaf: has added a new scanf and printf core that is suitable for all
1.159 olaf 261: scanf and printf function implementations
1.160 fefe 262: Imported a few more functions and optimizations from Frank Klemm (he
263: also rewrote dtostr to have more precision)
1.161 olaf 264: Olaf: checked in a new sig* function family (based on rt_sig*).
265: legacy <2.2 signal-handling doesn't work at the moment.
1.163 fefe 266: Made rudimentary iconv that can convert back and forth between
267: iso-8859-1, utf-8 and ucs-4 (for debugging).
268: Thanks to Markus Kuhn for the excellent utf-8(7)!
1.115 fefe 269:
1.74 fefe 270: 0.10:
271: update getpagesize.
272: add personality.
1.75 fefe 273: add "%*s" and "%*.*s" support to vsnprintf.
1.76 fefe 274: add putchar (apparently arm-linux-gcc will substitute printf("\n")
275: with putchar('\n') behind your back...?!
1.77 fefe 276: import include/scsi/ from glibc.
1.78 fefe 277: add iopl.
1.80 fefe 278: add execl and sigdelset prototypes.
279: add getopt_long stuff to getopt.h (may compile but won't link).
1.81 fefe 280: add RPC headers (no code yet).
1.82 fefe 281: add mlockall, munlockall
1.83 fefe 282: make "diet gcc foo.c" work.
283: added Sun RPC code and removed as many warnings as possible in a
284: heroic act of self-mutilation.
285: added getproto* and getdtablesize for the RPC cruft :-(
1.84 fefe 286: added getpass. mount from util-linux actually compiles now!
287: fix the sig*set routines. mount actually works now *bg*
288: fix fwrite dividing by zero when trying to fwrite n records of size 0.
1.85 fefe 289: added an initial regex implementation (3500 bytes!!!).
1.87 fefe 290: add llseek and lseek64 with optional lseek fall-back.
1.88 fefe 291: add res_init.
292: add asprintf (ugh, what an ugly function).
1.89 fefe 293: expanded arpa/nameser.h to include backwards compatibility defines
1.90 fefe 294: add ut_name alias to ut_host in struct utmp.
295: add inet_ntop, inet_pton, gethostbyname2.
1.92 fefe 296: add sysinfo, recvmsg, sendmsg.
1.93 fefe 297: add endmntent, getmntent, setmntent.
1.94 fefe 298: fix fnmatch (thanks, Guillaume Cottenceau!)
1.96 fefe 299: add setenv.
300: remove __restrict from mntent.h, add __restrict__ removal alias for
301: older gcc versions in sys/cdefs.h.
302: add rlim_t, sig_atomic_t declarations.
303: add sigsetjmp #define for __sigsetjmp (oops).
304: (Thanks to Chris Siebenmann for these three bug reports)
1.97 fefe 305: add a gruesome hack to printf floating point to accept %f and kludge
306: together support for %.2f. Don't look at the code, please!
1.98 fefe 307: fixed tcsetpgrp (oops, this is embarassing! Thanks, Chris Siebenmann)
1.99 fefe 308: imported fix for entlib by Jeff Garzik.
1.100 fefe 309: add glob implementation from Guillaume Cottenceau (Thanks!!)
310: add libdl fragments from Olaf (Yeah! One step closer to dynamic linking!)
1.101 fefe 311: add REG_ICASE and word start/end handling to my regular expressions.
312: my regular expressions now actually match substrings (i.e. "foobar" to "bar").
1.102 fefe 313: wrap getcwd to comply to man page (the syscall returns the number of
314: bytes, not the buffer)
315: add realpath.
1.103 fefe 316: fix vfprintf.
1.104 fefe 317: fix *scanf %s zero termination.
318: add abs, labs, llabs.
1.105 fefe 319: add <sys/io.h>, ioperm syscall.
320: add flock to <sys/file.h>
1.106 fefe 321: fixes to bsearch and the regular expressions.
1.107 fefe 322: add fake herror.
1.108 fefe 323: add scandir and alphasort.
1.109 fefe 324: add killpg
1.110 fefe 325: implemented a gross hack to make libpthread compile when
326: dietfeatures.h does not define WANT_THREAD_SAFE (it's empty then).
1.111 fefe 327: add getaddrinfo and freeaddrinfo (man, what a fucked up interface!)
1.112 fefe 328: fix sigsuspend (syscall had completely fscked up arguments!)
1.113 fefe 329: RLIM_INFINITY from the kernel is broken. Thanks to Chris Siebenmann
330: for sending a patch.
1.114 fefe 331: add getserv*.
332: add WANT_FULL_RESOLV_CONF so that the DNS routines use "domain" and
333: "search" from resolv.conf.
1.74 fefe 334:
1.73 fefe 335: 0.9:
1.65 fefe 336: fixed initgroups (oops)
1.66 fefe 337: Cleanup appending file open for stdio (thanks, James Antill)
338: imported vfprintf fix from James Antill.
1.67 fefe 339: add fnmatch
340: change index, rindex and bcmp as weak ELF symbols (were #defined before)
1.68 fefe 341: Olaf added character classes to *scanf.
1.69 fefe 342: Put object and library files into a separate directory (bin-$ARCH).
343: Add "cross" make target to make all architectures.
344: Add "diet" program and man page.
1.70 fefe 345: Add getgrnam, getgrgid
1.71 fefe 346: Add cfmakeraw (Thanks, Antonio Musumeci)
1.72 fefe 347: localtime won't call gettimeofday when the tzfile parser is used.
1.65 fefe 348:
1.64 fefe 349: 0.8:
1.34 fefe 350: vsnprintf(0,...) estimated the length of strings with a padding width
351: incorrectly.
1.35 fefe 352: new reboot() from Olaf.
1.36 fefe 353: added prototypes for getsockopt and setsockopt.
1.39 fefe 354: added experimental sem* and shm*
1.38 fefe 355: define EXIT_SUCCESS and EXIT_FAILURE
1.40 fefe 356: added setvbuf (only changes mode, not buffer)
1.41 fefe 357: added dietwarning.h (woohoo, linker warnings!) and used it to warn of
358: insecurity (system, sprintf) or bloat (printf and stdio).
1.42 fefe 359: added qsort() and bsearch(). Benchmark on 1000 random ints:
360: glibc: 679414 cycles qsort and 3352 cycles bsearch
361: diet libc: 300010 cycles qsort, 553 cycles bsearch
362: I have no idea why glibc is so slow.
1.43 fefe 363: added __isnan (references by libm.a from glibc).
364: added popen() and pclose(). Now the diet libc can link slsh (from
365: S-Lang!)
1.44 fefe 366: corrected usleep. It was more of an msleep until now.
1.45 fefe 367: corrected __dtostr (it looped when trying to format "0.0").
368: several fixes to stdio (thanks to S-Lang's excellent test suite!)
1.46 fefe 369: added ungetc (does it work?)
1.47 fefe 370: added inet_aton (yuck!)
1.50 fefe 371: added gethostbyname, gethostbyaddr, gethostbyname_r and gethostbyaddr_r
1.48 fefe 372: added h_errno and __h_errno_location
373: added inet_ntoa
1.49 fefe 374: added setpgrp and getpgrp, strsignal and execv (thanks, Olaf)
1.51 fefe 375: add bcopy, index, rindex macros
376: add isgraph and isxdigit
1.52 fefe 377: add strftime (ugh!!!)
1.53 olaf 378: Olaf fixed strftime, gmtime_r leap year bug.
1.54 fefe 379: Jeff Garzik contributed a spec file. I put it in contrib and hope
380: everbody knows what to do with it...
381: Olaf checked in a ton of libpthread stuff.
1.55 fefe 382: added mkstemp using /dev/urandom (harder to guess than getpid()).
1.56 fefe 383: add large file backwards compatibility support (so gzip will run on
384: kernel 2.2 and 2.0)
1.57 fefe 385: added shutdown
1.58 fefe 386: added nice
387: added pseudo-locale support for is* (they are now weak aliases,
388: isupper -> __isupper_ascii etc). So, for example, liblatin1 can
389: overwrite the default is* functions.
1.59 fefe 390: added liblatin1.a
1.60 fefe 391: added tzfile implementation (does it work for anyone else?)
1.61 fefe 392: added syslog(3) (thanks to Rene Müller!)
1.62 fefe 393: Jeff Garzik contributed getgr*, getpw* and getsp* in one tiny package.
394: Thanks!
1.63 fefe 395: merged duplicate code in execv and execvp into exec_lib.o
1.34 fefe 396:
1.21 fefe 397: 0.7.2:
398: added several prototypes to already implemented functions and
399: <sys/reboot.h>. Thanks for Abraham for pointing this out.
1.22 fefe 400: added prototypes for process group and dup syscalls. Thanks to
401: Abraham again. He also contributed an implementation for daemon(),
402: an ugly BSD hack. I decided to diversify the lib/ directory a
403: little and now created a libugly/ directory for stuff like system()
404: and daemon() ;-)
405: added libstdio and moved all that stdio crap from lib/ there. The
406: idea is to start separating now what we will separate for shared
407: libraries anyway.
1.26 fefe 408: optimized x86 unified-syscall by Olaf.
1.27 fefe 409: added limits.h, removed __ARCHBITS from endian.h (use __WORDSIZE from
410: limits.h instead)
411: added remove.c and enough cruft to limits.h to make it compile lzo,
412: lzop and bzip2.
1.28 fefe 413: added mktime, asctime_r, asctime and ctime (needed for gzip).
414: Someone will need to implement a reader for the glibc localtime file
1.31 fefe 415: format some day (man tzfile, ugh!) :-(
1.29 fefe 416: added unlink prototype to unistd.h.
417: added gmtime and gmtime_r.
1.31 fefe 418: fixed sparc unified syscall error handling (please upgrade!).
1.30 fefe 419: removed readdir glibc compatibility cruft.
1.31 fefe 420: removed stat glibc compatibility cruft.
1.32 fefe 421: oops, my fread was broken for pipes.
1.33 fefe 422: Olaf found a bug in pipe() for sparc, too.
1.21 fefe 423:
1.9 fefe 424: 0.7.1:
1.11 fefe 425: optimized away the static arrays from __ltostr and __lltostr.
426: optimized away the static arrays (and more!) from strtoul and strtoull.
427: added system (by Olaf).
1.12 fefe 428: added tolower and toupper
1.13 fefe 429: added getopt from Olaf (~600 bytes on x86!)
1.14 fefe 430: added clone for mips (by Olaf).
431: fixed longjmp and setjmp on sparc not to require glibc include files.
1.15 olaf 432: added pause for all (by Olaf).
1.17 fefe 433: added __attribute__ ((__const__)) to ctype.h
1.16 fefe 434: added isupper and islower.
435: added putc and putchar as macros.
1.17 fefe 436: added strcasecmp and strncasecmp (thanks to Abraham vd Merwe for
437: insightful discussions and patches I partially used for the last three)
1.18 fefe 438: added getpriority and setpriority (also by Abraham)
1.19 fefe 439: oops, I broke strtoul in a recent optimization attempt.
1.20 fefe 440: oi, setjmp and longjmp were broken on other platforms, too!
441: Thanks to Sébastien Côté for reporting this.
1.9 fefe 442:
443: 0.7:
1.6 olaf 444: clone support for i386,alpha,arm and sparc by Olaf.
1.1 cvs 445: Initial dynamic loading glue for i386, also by Olaf.
446: We don't have a dynamic loader yet, so this is not yet usable.
447: added readv, sigdelset, sigaltstack, sigfillset, sigismember, usleep,
448: vsprintf, writev, all by Olaf.
1.2 fefe 449: imported readdir fix from Guillaume. Mhh, can the kernel interface
450: really be this broken?
1.3 fefe 451: Found a kludgy way to detect whether the kernel includes define struct
452: stat64 (they also define STAT64_HAS_BROKEN_ST_INO). If this does
453: not work for you, please tell me!
1.4 fefe 454: Removed bogus __seek_types enum, it's a bunch of #defines now.
1.7 fefe 455: Fixed stdio line buffering. The code was already there but I forgot
456: to mark stdio and stdout as line buffered. This should really be
457: done dynamically using isatty, though.
1.8 fefe 458: Removed superfluous "if (1)" in execvp.c
1.1 cvs 459:
460: 0.6.14:
461: *scanf did not append the 0 byte for %s.
462: added creat and changed creat to call open directly instead of open64.
463: did for fread what 0.6.10 did for fwrite.
464: repaired buffered stdio a little (line buffering is still not
465: supported).
466: [All of these bugs have been reported by Guillaume. Thanks!]
467: added __pure__ to strchr and strrchr in <string.h>
468:
469: 0.6.13:
470: included COPYING to make clear that the diet libc is covered by the
471: GNU General Public License (and _not_ the LGPL). That means that
472: you need to obtain a license from me if you want to use the diet
473: libc in a proprietary program that you want to distribute.
474: The x86 unified syscall swapped arguments #4 and #5 and noone
475: noticed until now! Thanks to Guillaume Cottenceau for reporting
476: this!
477: The malloc had a subtle bug with small allocations that could cause
478: segfault. Guillaume reported it, Olaf fixed it.
479:
480: 0.6.12:
481: added assert, statfs and fstatfs
482: added include/net/if.h so fget compiles again.
483:
484: 0.6.11:
485: added putenv.
486:
487: 0.6.10:
488: fixed fwrite. It returned the number of bytes written, not the number
489: of records. Thanks to Albert D. Cahalan for pointing this out.
490: fixed fgets. It returned EOF on empty lines. Thanks, Erik Frey.
491: added brk and sbrk. harold@nb.com.sg made me do it.
492:
493: 0.6.9:
494: fixed execvp not to return on ENOENT
495: did for {open|read|close|seek|tell}dir what I did for stat before.
496: The glibc compatibility part is currently non-functional.
497: fixed white space handling in sscanf " (" would not match " (".
498: fixed printf to accept 'l' flag.
499: fixed getpwuid (ignored last line)
500:
501: 0.6.8:
502: Olaf contributed initial thread-safe syscalls for i386, alpha, sparc,
503: mips and arm. I did the one for ppc. They can be enabled in dietfeatures.h.
504: added strlcpy and strlcat from OpenBSD.
505: added stat64, fstat64 and lstat64.
506: added endian.h and made ending of strlen.c endianness-aware
507: added string routines size tweak to dietfeatures.h. Most of the
508: string routines have been unrolled. This is up to three times as
509: fast but creates up to three times larger code. Now you can disable
510: the unrolling.
511: added sendfile.
512: I also added pread. It works on x86 and sparc but not on ppc and mips.
513: I have no idea what's going on. strace disagrees with the kernel.
514: Can anyone help? I asked the Linux kernel mailing list for help, too.
515: added a few aliases of the type __libc_open for open. nm on
516: libpthreads.so indicates that we will need them.
517:
518: 0.6.7:
519: the sources now compile without warnings with -Wall.
520: printf now prints "(null)" when %s is passed NULL. This can be
521: removed with WANT_NULL_PRINTF in dietfeatures.h
522: added vfprintf, execl, ttyname.
523: stat, lstat and fstat are now #defined to __dietstat, __dietlstat and
524: __dietfstat so they can use the normal kernel struct stat.
525: stat, lstat and fstat are now C wrappers that convert to the glibc
526: struct stat. So we can avoid that overhead for programs that use
527: dietlibc headers.
528:
529: 0.6.6:
530: changed the Makefiles so you can now set CFLAGS on the command line
531: added memccmp (analogous to memccpy) and strncmp.
532: Olaf fixed another bug in the sparc unified syscall.
533: Paul Clifford contributed a C version of his strlen.S that is much
534: more efficient than the previous strlen on all platforms! It also
535: looks like technology from Roswell. ;-}
536: added a "real" stdio. Well, almost. Please contribute!
537: added dietfeatures.h so you can remove features you don't need.
538: removed debug code from vsnprintf that changed \0 to ' ' (argh!).
539: stdio now works with simple programs and minigzip from libz.
540: stdio uses some major trickery to avoid linking the stdio, stderr and
541: stdout (and reserving space for them) when they are not used.
542:
543: 0.6.5:
544: Red Plait <redplait@ixcelerator.com> found several bugs in diet libc,
545: most of them bugs in the new header files, but also missing sigset
546: functions.
547: Paul Clifford contributed an assembly strlen.S for ARM and fixed
548: several bugs.
549: Fixed ppc/setjmp and mips/pipe.
550: Olaf contributed a new sparc unified syscall.
551:
552: 0.6.4:
553: declared is* static inline in getservent.
554: added assert_fail, strtoul, isalpha, isdigit, isalnum, isascii.
555: changed strlen to return 0 when passed NULL.
556: new, much smaller unified syscall for MIPS. Thanks to Olaf the Mad
557: Scientist who actually implemented this without access to a MIPS
558: box, just from reading the architecture manual. And it worked out
559: of the box.
560: started a set of system includes, mainly so that I can use lcc and
561: my alpha-linux cross compiler (which is unable to cross-compile
562: glibc). diet libc can now be compiled without any include files
563: from a normal libc. The includes do declare more than diet libc
564: currently delivers and they are still far from complete for real
565: applications.
566: I will only add assembly versions that are smaller _and_ faster than
567: the C version. Larger routines are only accepted if they are called
568: very often and are substantially faster.
569: added i386 assembly strchr, which is smaller and faster than the old
570: version. It is, however, larger than the version contributed by
571: proton (thanks, anyway).
572: added i386 strlen (31% faster, 14% smaller)
573: "make t" will now create a map file called "mapfile".
574:
575: 0.6.3:
576: added sys_errlist, strerror and perror
577: added isblank
578: added atol
579:
580: 0.6.2:
581: mmap for ARM didn't compile. Thanks, Paul!
582:
583: 0.6.1:
584: split mmap into the architecture specific subdirectories.
585: getenv now copes with environ==NULL, thanks Paul Clifford.
586: Paul also contributed a smaller ARM startup code.
587:
588: 0.6:
589: strcat returned the wrong result. Thanks, Dietz Pröpper.
590: strtod now understands a negative exponent (oops, thanks Bertram Barth)
591: Port to arm-linux-gnu, but on the Netwinder I use for testing the
592: __dtostr does not work (I have no idea why!)
593: The MIPS port now uses (much smaller) non-PIC code. That means that
594: the applications you link against diet libc also have to be compiled
595: non-PIC. I suggest copying the CFLAGS from the diet libc Makefile.
596: Thanks to Ralf Bächle for helping me with this!
597: I made subdirectories for the architectures and use VPATH to override
598: VPATH so that make finds the source file automatically. That should
599: simplify the sources greatly.
600: Olaf Dreesen contributed Alpha support including setjmp and longjmp!
601: ARM and MIPS now also have setjmp and longjmp
602: "compile" and "load" are now make targets. Use them for djb programs.
603: added contrib/elftrunc.c which will remove unnecessary ELF headers.
604: Again, contributed from Olaf. Great work!
605:
606: 0.5.12:
607: printf also does signed numbers.
608: If you don't use atexit, dietlibc now does not link exit, only _exit.
609: *printf now correctly returns the number of bytes written.
610: Olaf contributed experimental sscanf and vsscanf implementations.
611: If passed NULL as buffer, snprintf will not write anything but still
612: return the number of bytes it would have written.
613: Initial MIPS port! (Oh, the agony!)
614: No setjmp and longjmp support yet! Please contribute!
615: I even implemented unified syscalls for MIPS. Still, MIPS code is
616: almost twice the size of SPARC code. If anyone knows why: please
617: tell me!
618:
619: 0.5.11:
620: I implemented new unified syscalls for x86, sparc and ppc, this time based
621: on .s files and not .c files, and I moved the syscalls into
622: subdirectores to clean the dietlibc sources up a little.
623: A binary consisting of printf("%s is %d\n","olaf",23) is now
624: 2864 bytes on sparc
625: 2488 bytes on intel
626: I kludgily implemented fprintf(stdout,... and fprintf(stderr,...
627: to make a few more applications work.
628: Olaf Dreesen also implemented some unified syscall stuff for x86.
629: He discovered that with our unified syscall interface it actually
630: costs <10 bytes total to make all system calls thread safe!
631: I implemented atexit() (can register up to 4 callbacks).
632: I implemented strtod and __dtostr (the opposite). Now we can add
633: floating point support to vsnprintf and sscanf!
634:
635: 0.5.10:
636: I actually saw that I can not only merge the errno handling code of
637: the system calls on x86, I can also merge the rest (including the
638: arguments) except for setting the system call number. All those
639: system calls are now just a jump to a unified system call handler.
640: I got rid of x86openclose again. The savings are substantial:
641: chown from embutils went from 7664 to 7184 bytes!
642: If I'd move the system call wrappers to assembly language, I could
643: even reduce the alignment (does not matter since it's just a jump
644: anyway) and get rid of the "ret" behind each jump (one byte per
645: system call!)
646:
647: 0.5.9:
648: added memchr, strpbrk, strstr, strtol, isspace (hehe)
649: fixed strdup
650: fixed return values for strcpy and strcat (thanks to Norbert Berzen)
651: Olaf Dreesen contributed a strtol and initial {sn|vsn|}printf implementation
652: (no signed integers, only strings and unsigned integers (but
653: supporting octal, hex and decimal). Thanks, Olaf! (by the way:
654: that code must be wonderful, I don't understand it at all *bg*)
655: Olaf's printf does understand padding like in "%08d" and "%8d" and
656: automatically pads pointers with '0'.
657: Rewrote the x86 start code, old: 22 instructions, new: 12 instructions.
658: Thanks to proton for inspiration on this.
659: The new x86 start code also does not reference exit any more, thus saving
660: 64 bytes for executables that don't call exit explicitly.
661: [insert maniacal laughter] EVERY BYTE COUNTS!1!! ;-)
662: Moved errno and environ to start.S, saving no byte binary size but
663: speeding up compilation and slightly shortening dietlibc.a ;-)
664: For x86: joined open and close into one assembler file, sharing the
665: errno handling. This is a feasibility test and it actually saves a
666: few bytes. I think I will reimplement the _syscall[1-6] macros on
667: all platforms now to share the errno handling code for them.
668:
669: 0.5.8:
670: fixed strchr to be able to look for 0.
671:
672: added _llseek, ftruncate, getpgid, getresgid, getresuid, getsid,
673: memccpy, memmove, mprotect, setregid, setresgid, setresuid, setreuid,
674: strncpy, swapon, truncate, strtok, strtok_r, strspn, strcspn (all
675: contributed by Olaf Dreesen)
676:
677: added execvp, getcwd
678:
679: fixed __xmknod
680:
681: Note: can it be that the ftw interface really is so broken that I
682: cannot implement it without having to implement some searching data
683: structure? I included an experimental ftw implementation that will
684: not follow symlinks.
685:
686: 0.5.7:
687: oops, if_nametoindex was broken!
688:
689: 0.5.6:
690: ported to ppc-linux.
691: fixed i386 sigsetjmp (I mistyped the function name)
692: included sigjmp.c
693:
694: 0.5.5:
695: added wait, sys_siglist, longjmp/setjmp/sigsetjmp for i386 and sparc
696: actually, it wasn't fork that wasn't working for sparc, it was pipe.
697: I fixed it now.
698: dietlibc/SPARC assumes -msupersparc (does not provide div, mul, etc)
699: fixed readdir to use getdents and not the intel inline asm
700:
701: 0.5.4:
702: ported to sparclinux (sparc32 only). Beware: does not work yet.
703: added raise, abort, readlink, strcat, geteuid, geteuid, wait3, access
704:
705: 0.5.3:
706: added tcsetattr and getenv to compile e3
707:
708: 0.5.2:
709: added vhangup, tcgetattr, isatty and memcmp for fgetty
710: (http://www.fefe.de/fgetty/)
711: added localtime from uC-libc.
712:
713: 0.5.1:
714: stat and friends actually work now. Yuck! Another case of
715: translation between kernel and userland. Why can't the kernel
716: people and the libc people simply agree on a standard?
717: removed many unnecessary includes to speed up compilation.
718: added -fomit-frame-pointer and i386 compilation target to reduce code size.
719: inlined socketcall to reduce code size.
720: "load" and "compile" are examples for djb code.
721:
722: 0.5:
723: Olaf Dreesen contributed a much smaller implementation of malloc and friends.
724: each object file is now treated with "strip -x -R .note -R .comment"
725: split each system call into a separate object file
726: added ntohs, htons, alarm, if_indextoname and if_nametoindex
727:
728: 0.4.1:
729: oops, the strchr implementation was wrong. Thanks Jens Laas!
730:
731: 0.4:
732: copied opendir and friends from uC-libc.
733: added getservent and getservby* in gerservent.c
734:
735: 0.3:
736: remove readdir system call
737: added getdents system call
738: added getpwnam/getpwuid implementation in getpwnam.c
739: added a few string functions (in str*.c)
740:
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