Commit Graph

168 Commits

Author SHA1 Message Date
tg e141394a83 RCSID sync from oksh; reduce hash table #elements if !MKSH_SMALL to speed up 2012-03-03 21:30:59 +00:00
tg c8ee91f02d LLVM+clang scan-build found a dead store and I found an unneeded assert 2011-12-31 00:47:46 +00:00
tg da9ce25524 put a bit of type safety into the history code 2011-12-30 21:00:32 +00:00
tg 7b89945505 use sane spelling of read-only consistently 2011-12-16 20:03:28 +00:00
tg 3b87d173d4 • finally, the code and manual page text to deprecate, and code to not
handle any more, octal 010 style constants, as promised
• overhaul the manpage re. arithmetic expressions, make the guarantees
  mksh code has explicitly, precisely, clear
• to reduce burden of the compiler, getint() now operates on mksh_uari_t
  internally; it already applied the sign after operation, anyway (C99
  guarantees wraparound on unsigned types, but for signed types we need
  specific compiler support; apparently, this comes from hardware limits)
• use const and shuffle order of locals around while here
2011-12-10 13:34:19 +00:00
tg 12608d7933 fix function-local arrays 2011-11-26 00:45:03 +00:00
tg e20b1295b7 promote x=(a b); x+=(c) to standard mksh functionality at cost of 932 MKSH_SMALL .text bytes on MirBSD/i386 2011-11-11 22:14:19 +00:00
tg c620f865c1 cid 1004E0F5C27271F5B00 broke integer-base handling of built-in parameters
mksh -c 'echo a=$RANDOM; RANDOM=0x12; echo b=$RANDOM' # behaviour changed
2011-11-08 22:07:15 +00:00
tg de75cbdb33 fix spello in comment, by <Snader_LB:#!/bin/mksh> 2011-10-16 00:18:56 +00:00
tg 9782f6b4d1 • access(2) is broken in at least kFreeBSD 9.0 as “modern” OS, so bring
back the wrapper code as well as refactor most other code calling it
• apparently, names can’t end in ‘_’ or contain ‘__’ anywhere…
2011-09-07 15:24:22 +00:00
tg 577c918beb patch most of Jerker Bäck’s concerns out, unless not applicable 2011-08-27 18:06:52 +00:00
tg a4a000eafb take down the entire xterm (or GNU screen tab), hard, with:
mksh-R40 -c 'x=$COLUMNS; awk "BEGIN{exit(1)}"'
10x to the PLD Linux guys for spotting _and_ bisecting this!
2011-07-07 20:24:53 +00:00
tg 3ef67e3296 replace uses of OAAT hash in all its variants by NZAT (mksh internal) or NZAAT (all others) 2011-07-06 22:22:02 +00:00
tg f2405b7dde • bump patchlevel to today’s
• while here, reformat 'struct tbl' comment-wise and placement-wise
  and drop the Tflag typedef
• while here, write regression test for the "global" built-in, which
  does what typeset is supposed to do except that it doubles as "local"
2011-07-05 20:12:20 +00:00
tg 0739fa74a0 address "env RANDOM=1=2=3 mksh" DoS by integrifying more 2011-07-02 17:57:41 +00:00
tg 43c8d8765f pretty tricky thing, IBM’s curses library does nameref foo=foo… 2011-06-21 21:50:26 +00:00
tg c57f8ede17 make set_refflag an enum to get easier to understand code 2011-06-21 21:11:21 +00:00
tg f4e22bc4c8 factor out some common code 2011-06-21 21:08:50 +00:00
tg e0fb8dc431 • rework hash table interna to avoid gcc-4.1 on Debian etch bug
• also improve behaviour with _a lot_ (>2²⁸) entries
• while here, improve comments and whitespace
2011-06-05 19:58:21 +00:00
tg 2cfc3e5c3d mksh R40 Release Candidate 1
Testsuite:
• add new need-pass: {yes|no} attribute, default yes
• exit with 1 if a need-pass test failed unexpectedly
  idea by Kacper Kornet <draenog@pld-linux.org>
• mark utf8bom-2 as need-pass: no
Infrstructure:
• add housekeeping function for making a tty raw
• switch functions with unused results to void
• struct op: u.charflag contains last char of ;; in TPAT
• var.c:arraysearch is now a global function
Language:
• add ;& (fall through) and ;| (examine next) delimiters
  in addition to ;; (end case) as zsh extensions, because
  POSIX standardised on ;& already
• add -A (read into array), -N (read exactly n bytes),
  -n (read up to n bytes), -t (timeout) flags for read
  from ksh93
• allow read -N -1 or -n -1 to slurp the entire input
• add -a (read into array the input characters) extension
  specific to mksh to read, idea by David Korn
• add -e (exit with error if PWD was not set correctly
  after a physical cd) to cd builtin, mandated by next
  POSIX, and change error codes accordingly
Rewrites:
• full rewrite of read builtin and its manpage section
• add regression tetss for most of the new functionality
• duplicate hexdump demo tests for use of read -a
• use read -raN-1 in dot.mkshrc to get NUL safe base64,
  DJB cdb hash and Jenkins one-at-a-time hash functions
2011-05-29 02:18:57 +00:00
tg 9fe3ba48d2 handle MKSH_SMALL not doing foo+=(…) 2011-05-07 02:02:47 +00:00
tg 4345dd1fb8 += support for variables and arrays 2011-05-04 23:16:05 +00:00
tg e8ea9954aa • Implement http://austingroupbugs.net/view.php?id=367 and align things
a bit more with POSIX and the other shells

I considered http://austingroupbugs.net/view.php?id=253 but the use
of bi_errorf() is interesting, especially as it’s often enough a
noreturn function, and funnily enough, 'cd -P /foo' returns 0 while
'chdir -P /foo' fails (so idk where to put -e)…
2011-03-27 18:50:06 +00:00
tg 2a3d4db123 lint is your friend 2011-03-13 01:20:25 +00:00
tg 5f8075fc82 introduce a tobool(cond) abstraction¹ and switch bool to char if !stdbool.h
① currently: ((cond) ? true : false) but (!!(cond)) and casting to bool,
  the latter only if stdbool.h, would also work – which performs best on
  (and across) all supported systems?
2011-03-07 20:30:41 +00:00
tg a796512040 • more comment and int→bool cleanup, add and improve some comments
• in interactive mode, always look up {LC_{ALL,CTYPE},LANG} environment
  variables if setlocale/nl_langinfo(CODESET) doesn’t suffice
• add the ability to call any builtin (some don't make sense or wouldn't
  work) directly by analysing argv[0]
• for direct builtin calls, the {LC_{ALL,CTYPE},LANG} environment
  variables determine utf8-mode, even if MKSH_ASSUME_UTF8 was set
• when called as builtin, echo behaves POSIXish
• add domainname as alias for true on MirBSD only, to be able to link it
• sync mksh Makefiles with Build.sh output
• adjust manpage wrt release plans
• link some things to mksh now that we have callable builtins:
  bin/echo bin/kill bin/pwd bin/sleep (exact matches)
  bin/test bin/[ (were scripts before)
  bin/domainname=usr/bin/true usr/bin/false (move to /bin/ now)
• drop linked utilities and, except for echo and kill, their manpages
• adjust instbin and link a few more there as well
2011-02-11 01:18:23 +00:00
tg cc31d86e3b • implement KSHEGID, KSHGID, KSHUID variables by suggestion of Richard K.
(KSHEUID aka USER_ID already exists)
• simplify, speed up LCG and $RANDOM handling again
2011-01-21 21:04:48 +00:00
tg b0b03a5a75 RNDEBUG showed that using the pushb_fast will have much fewer syscalls 2010-09-19 19:21:20 +00:00
tg 667d792d6a • Address concerns of Chris Palmer from the Android security team
– possible integer overflows in memory allocation, mostly
    ‣ multiplication: all are checked now
    ‣ addition: reviewed them, most were “proven” or guessed to be
      “almost” impossible to run over (e.g. when we have a string
      whose length is taken it is assumed that the length will be
      more than only a few bytes below SIZE_MAX, since code and
      stack have to fit); some are checked now (e.g. when one of
      the summands is an off_t); most of the unchecked ones are
      annotated now
    ⇒ cost (MirBSD/i386 static): +76 .text
    ⇒ cost (Debian sid/i386): +779 .text  -4 .data
  – on Linux targets, setuid() setresuid() setresgid() can fail
    with EAGAIN; check for that and, if so, warn once and retry
    infinitely (other targets to be added later once we know that
    they are “insane”)
    ⇒ cost (Debian sid/i386): +192 .text (includes .rodata)
• setmode.c: Do overflow checking for realloc() too; switch back
  from calloc() to a checked malloc() for simplification while there
• define -DIN_MKSH and let setmode.c look a tad nicer while here
2010-09-14 21:26:19 +00:00
tg 06c6be0a70 shave off another 468 bytes: we’re 300 bytes smaller than BEFORE the
cat builtin was added now… (also removed utf-8 from source files, in
favour of just ASCII)
2010-08-28 20:22:24 +00:00
tg 3747722db4 improve string pooling: saves 316 bytes in .text 2010-08-28 18:50:58 +00:00
tg c187f3089f a tad annoying, when external programmes such as GNU screen are running,
we don’t get SIGWINCH when the window size changes during the runtime of
that, so, the signal is only usable reliably during editing in the shell
and we re-check the window size before each interactive edit line again
2010-07-25 11:35:43 +00:00
tg f10186fedd new MKSH_A4PB cppflag: force use of arc4random_pushb(3) during seeding
just the way sysctl KERN_ARND currently is used on OpenBSD/MirBSD (for
manual packager overrides only, no mirtoconf check; e.g. for Cygwin)
2010-07-18 17:29:50 +00:00
tg 7c91e018f4 • merge printf from OpenBSD
• deactivate %a and %A since our libc doesn’t have it
• rewrite the mksh integration code to use shf instead of stdio, removing
  floating point support always in the process, as shf doesn’t support it
  ⇒ saves 11114 (6706 text, 168 data, 4240 bss) with dietlibc on Debian
• fix -Wall -Wextra -Wformat -Wstrict-aliasing=2 for gcc (Debian 4.4.4-7)
• fix these and -Wc++-compat for gcc version 4.6.0 20100711 (experimental)
  [trunk revision 162057] (Debian 20100711-1) except:
  – a few enum warnings that relate to eglibc’s {g,s}etrlimit() functions
    taking an enum instead of an int because they’re too stupid to adhere
    to POSIX interfaces they design by themselves
  – all “request for implicit conversion” involving a "void *" on one side
• tweak the manual page somewhat more
2010-07-17 22:09:40 +00:00
tg a6c81ea978 on obsd/mbsd, entropy is cheap enough for us to do this (codepath in
kernel checked for both) for additional seeding ($RANDOM is still from
the LCG only)
2010-07-11 11:17:33 +00:00
tg 30046ffcf2 implement “live” SIGWINCH handling in the Emacs editing mode
for winstonw from IRC #!/bin/mksh
2010-07-04 17:45:17 +00:00
tg 4cbb5a9d46 to speed up mksh, get rid of arc4random(3) uses and use the LCG always;
depend on ASLR for seeding
2010-07-04 17:33:58 +00:00
tg 566f882d83 Add some assertions – mkssert() – for things clang’s scan-build can’t see 2010-01-28 20:26:52 +00:00
tg f3b3b4b1fb remove some debugging code 2010-01-25 14:38:04 +00:00
tg 2e9654ffa4 introduce “typeset -i foo[*]”, rationale see cid 1004B5DA60A56BFB604 2010-01-25 14:25:16 +00:00
tg c700693d11 Add “unset foo[*]” mksh extension, which allows to unset the *contents*
of foo[0] (but not its attributes), and the rest of the array, so that
later “set +A foo bar” will set foo[0]=bar but retain the attributes.

This is important, because, in the future, arrays will have different
attributes per element, instead of all the same (which, actually, is
not entirely true right now either, since “unset foo[0]” will not mo-
dify the attributes of a foo[1] existing at that point in time), where
foo[$newkey] will inherit from foo[0], but typeset foo will only affect
foo[0] no longer foo[*] in the future. (The rules about typeset=local
will still apply, as they affect creation of variables in a scope.)
2010-01-25 14:11:29 +00:00
tg 8213a28403 llvm/clang scan-build is now content… 2009-12-05 17:43:50 +00:00
tg 417fd60c76 * fix 'set -A foo -- [2]=a b c' contingency (tested against GNU bash4,
which, in its latest sid incarnation, even received mksh's ability
  to produce ${!foo[*]} array keys, wow!)
* plug a memory leak while here (ATEMP only, but still)
2009-12-01 19:15:35 +00:00
tg a09f05e77a /me is annoyed
I read, IIRC in the Cederqvist, that 'cvs tag' sets a sticky tag onto
the cwd… it doesn’t, apparently. (I actually like it better this way,
but one needs to know!)
2009-11-28 14:28:03 +00:00
tg 883d9d99b3 switch ${%foo} to wcswidth-like behaviour – slightly problematic, and
the “set +U” case isn’t even handled

committed to branch because I’d like to get more input on this, for now
2009-11-28 14:21:47 +00:00
tg ceb591bf6a • better IV for the oaathash-on-binary (as if we prepended a '\x01')
• better variable name for the LCG state
2009-10-18 12:30:06 +00:00
tg eafe88aa74 • overhaul handling of special variables
• use a combination of the one-at-a-time hash and an LCG for handling
  the $RANDOM special if !HAVE_ARC4RANDOM instead of rand(3)/srand(3)
  and get rid of time(3) usage to reduce import footprint
• raise entropy state (mostly in the !HAVE_ARC4RANDOM case though…)
• simplify handling of the $RANDOM_SPECIAL generally
• tweak hash() to save a temp var for non-optimising compilers
• some int → mksh_ari_t and other type fixes
• general tweaking of code and comments
2009-10-17 21:16:05 +00:00
tg c8955138ec • avoid calling arc4random_pushb for inheritance and other redundant items;
call it only if $RANDOM is indeed set (although pool extension would be a
  possibility we do have arc4random_atexit which does it nicely too)
• avoid calling setspec for int→str conversion just before execve()
2009-09-27 10:31:06 +00:00
tg 7b7b75b026 * move the utf_* functions to a smaller file, to reduce the pain the
CPU has to endure while gcc is crunching on edit.c
* comment on mksh not using _exactly_ OPTU-8/OPTU-16 (XXX)
2009-09-26 04:01:34 +00:00
tg a59d14b565 further optimise and simplify the handling of $RANDOM, reads and writes
to it are now either arc4random or rand/srand, but srand retains the old
state; set +o arc4random is no longer possible, but if it's there we use
arc4random(3), if not, we use rand(3) for $RANDOM reads; optimise special
variable handling too and fix a few consts and other minor things
2009-09-26 03:40:03 +00:00