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The implementation has an off-by-one bug. This results in random memory
corruption. In one particular case, it caused certain bits of a function
body to go missing.
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Unfortunately klibc doesn't provide out-of-line versions of ctypes
functions such as isalpha. This is a nasty hack to create them.
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Since we have a fallback implementation for stpcpy we can now use it
unconditionally in nodes.c.pat. This also fixes a link error with
klibc.
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Add a dummy sysconf implementation that always fails for klibc.
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Let's remove the support for standalone support from test for the same
reason as printf.
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klibc doesn't have strtod or atof. So add an implementation that
always fails by setting the end pointer to the input string.
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The support for standalone/csh printf only serves to complicate
maintainence.
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klibc doesn't define the macro SSIZE_MAX.
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Now that mkbuiltins correctly disabled histcmd we don't need the dummy
histcmd implementation anymore.
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For systems without getrlimit (e.g., klibc) we will disable ulimit.
In order to achieve this, builtins.def is now produced by cpp which
allows us to use macros such as HAVE_GETRLIMIT in it.
Thie also means that we can get rid of the cflags parsing code in
mkbuiltins.
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klibc doesn't have killpg. Since we only call it for valid values of
pid, we can call kill instead.
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klibc doesn't have strsignal but it does have sys_siglist.
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All users of mempcpy must include system.h.
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Removed obsolete extern declaration on funcnest. This conflits with the
correct static definition.
Changed memtodest prototype to use char * instead of unsigned char *.
Perform the unsigned char cast inside memtodest instead.
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klibc doesn't have and doesn't need getpwnam. This change creates
getpwhome which always returns NULL if getpwnam doesn't exist.
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Added impelmentation of bsearch since klibc doesn't have it yet.
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64-bit file calls such as stat64 don't exist on all architectures for
dietlibc, and they don't exist at all for klibc. In those cases the
normal calls such as stat are already 64-bit.
So simply define stat64 as stat if it doesn't exist. Do the same for
all other 64-bit calls as well.
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This gets rid of the only reference of sysexits.h in dash which is
from commandcmd. This is needed for klibc support since it doesn't
have sysexits.h.
The only uses of sysexits.h in commandcmd is superfluous anyway. In
fact, it is overly sensitive about usages such as 'command -vV ls'.
By making its behaviour close to that of bash/ksh, we end up saving
a bit of space too.
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klibc has bsd_signal instead of signal. So we will define signal as
bsd_signal if
1) signal does not exist.
2) bsd_signal exists.
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This is the only instance of __P in the entire source so it makes sense
to get rid of it rather than making it work with klibc.
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This change updates the BSD licence to the three-clause version since
NetBSD has already done so. This makes dash GPL-compatible.
It also adds Christos Zoulas (NetBSD ash maintainer) to the COPYING file.
I've added "copyright by Herbert Xu" to most files.
Finally all CVS IDs and inclusion of sys/cdefs.h have been removed.
The latter is needed for support of klibc.
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Added unlikely markers.
Reduced switch coverage.
Removed p since we now erase NULs as soon as we see them.
Use more to store parselleft.
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On Sun, Sep 25, 2005 at 07:50:54PM +0000, Gerrit Pape wrote:
> On Sat, Sep 03, 2005 at 02:56:00PM +0200, Martin Dickopp wrote:
> > When analysing the bug I came to the following conclusion: The loop
> > beginning at input.c:302 overwrites a single input line with itself,
> > skipping NUL characters. Therefore, after the loop the line buffer
> > has less characters than originally read if and only if the input line
> > contains NUL characters.
>
> yes. Thanks a lot for the details and patch.
>
> > The pointer that is used to read from the buffer, 'parsenextc' (cf.
> > input.h:66), is also used as the beginning of the next line in
> > input.c:296. This fails if the buffer contains less characters
> > than originally read into it due to NUL characters.
> >
> > The proposed patch (attached) keeps track of the number of skipped
> > characters and advances 'parsenextc' accordingly before processing
> > the next input line.
>
> Hi Herbert, please see
> http://bugs.debian.org/317516
Instead of moving the characters in the loop, we will do memmove every
time we see a NUL character. This hurts if there are a lot of NUL
characters, but should be a win in normal situations.
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Let evaltree handle traps from cmdloop.
Reset evalskip after minusc is executed.
Stop executing traps once SKIPEVAL is seen.
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This allows SKIPEVAL and SKIPFUNC to coexist which is needed for eval return 1.
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