On Tue, Sep 16, 2008 at 08:51:47PM +0000, Thorsten Glaser wrote:
> Agustin Martin dixit:
>
> >I may have messed up the names with all the sh changes.
>
> I just changed the shebang lines instead ;)
> Note /bin/ksh is a symbolic link, thus shouldn't be needed to be tested.
I am re-trying with pdksh in etch and, funny, when explicitly change the
symlink to pdksh
/bin# ln -sf pdksh sh
and keep the shebang lines pointing to /bin/sh the test script runs (no hang
and no error signalled, even with '-e' flag enabled in both scripts, and the
right return value shown). However, if I explicitly change the shebang lines
scripts seem to fail,
$ ./test-miscksh.pdksh
debconf: DbDriver "passwords" warning: could not open
/var/cache/debconf/passwords.dat: ...
./run-test.pdksh[7]: >&3 : bad file descriptor
Now does not hang, probably because I added 'set -e' to both scripts.
I have straced both cases for pdksh and here goes the output. I do not know
about the internals of *ksh, but I am surprised at the different clone
lines, where the error appears,
$ strace ./test-miscksh.pdksh || echo "error"
----------------- BAD: shebang to pdksh ------------------------------------
...
close(3) = 0
pipe([3, 6]) = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbffabd08) = -1 EINVAL (Invalid
argument)
_llseek(3, 0, 0xbffabd50, SEEK_CUR) = -1 ESPIPE (Illegal seek)
ioctl(6, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbffabd08) = -1 EINVAL (Invalid
argument)
_llseek(6, 0, 0xbffabd50, SEEK_CUR) = -1 ESPIPE (Illegal seek)
fcntl64(3, F_SETFD, FD_CLOEXEC) = 0
fcntl64(6, F_SETFD, FD_CLOEXEC) = 0
pipe([7, 8]) = 0
ioctl(7, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbffabd08) = -1 EINVAL (Invalid
argument)
_llseek(7, 0, 0xbffabd50, SEEK_CUR) = -1 ESPIPE (Illegal seek)
ioctl(8, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbffabd08) = -1 EINVAL (Invalid
argument)
_llseek(8, 0, 0xbffabd50, SEEK_CUR) = -1 ESPIPE (Illegal seek)
fcntl64(7, F_SETFD, FD_CLOEXEC) = 0
fcntl64(8, F_SETFD, FD_CLOEXEC) = 0
clone(./run-test.pdksh[7]: >&3 : bad file descriptor
child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0xb7db1708) = 6038
--- SIGCHLD (Child exited) @ 0 (0) ---
$ strace ./test-miscksh || echo "error"
---------------- GOOD: pdksh with sh -> pdksh and shebang to sh -------------
...
close(3) = 0
pipe([3, 6]) = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfddf358) = -1 EINVAL (Invalid
argument)
_llseek(3, 0, 0xbfddf3a0, SEEK_CUR) = -1 ESPIPE (Illegal seek)
ioctl(6, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfddf358) = -1 EINVAL (Invalid
argument)
_llseek(6, 0, 0xbfddf3a0, SEEK_CUR) = -1 ESPIPE (Illegal seek)
fcntl64(3, F_SETFD, FD_CLOEXEC) = 0
fcntl64(6, F_SETFD, FD_CLOEXEC) = 0
pipe([7, 8]) = 0
ioctl(7, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfddf358) = -1 EINVAL (Invalid
argument)
_llseek(7, 0, 0xbfddf3a0, SEEK_CUR) = -1 ESPIPE (Illegal seek)
ioctl(8, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfddf358) = -1 EINVAL (Invalid
argument)
_llseek(8, 0, 0xbfddf3a0, SEEK_CUR) = -1 ESPIPE (Illegal seek)
fcntl64(7, F_SETFD, FD_CLOEXEC) = 0
fcntl64(8, F_SETFD, FD_CLOEXEC) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0xb7d98708) = 6028
close(3) = 0
close(8) = 0
rt_sigprocmask(SIG_BLOCK, [PIPE], [], 8) = 0
rt_sigaction(SIGPIPE, {0x80afdb0, [], 0}, {SIG_DFL}, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
brk(0x8b3e000) = 0x8b3e000
read(7, "GET dictionaries-common/default-"..., 4096) = 39
write(6, "0 castellano8 (Spanish 8 bit)\n", 30castellano8 (Spanish 8 bit)
) = 30
--- SIGCHLD (Child exited) @ 0 (0) ---
and here goes the result for sh->mksh symlink, closer to the wrong pdksh
case,
---------------- mksh with sh->mksh symlink -------------------------------
...
close(3) = 0
pipe([3, 6]) = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfd78ad8) = -1 EINVAL (Invalid
argument)
_llseek(3, 0, 0xbfd78b20, SEEK_CUR) = -1 ESPIPE (Illegal seek)
ioctl(6, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfd78ad8) = -1 EINVAL (Invalid
argument)
_llseek(6, 0, 0xbfd78b20, SEEK_CUR) = -1 ESPIPE (Illegal seek)
fcntl64(3, F_SETFD, FD_CLOEXEC) = 0
fcntl64(6, F_SETFD, FD_CLOEXEC) = 0
pipe([7, 8]) = 0
ioctl(7, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfd78ad8) = -1 EINVAL (Invalid
argument)
_llseek(7, 0, 0xbfd78b20, SEEK_CUR) = -1 ESPIPE (Illegal seek)
ioctl(8, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfd78ad8) = -1 EINVAL (Invalid
argument)
_llseek(8, 0, 0xbfd78b20, SEEK_CUR) = -1 ESPIPE (Illegal seek)
fcntl64(7, F_SETFD, FD_CLOEXEC) = 0
fcntl64(8, F_SETFD, FD_CLOEXEC) = 0
clone(./run-test[7]: >&3 : bad file descriptor
child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0xb7d78708) = 6049
--- SIGCHLD (Child exited) @ 0 (0) ---
I am in low bandwith and does not have ksh available, and is real late, hope
I did not mess many things when testing. Will try with ksh when possible.
Note that all tests are for the *etch* versions, scripts are the same as
before with 'set -e' lines added and slightly renamed.
> >The simple way to keep everybody joined is to abuse he BTS, reassigning bug
> >report to e.g. 'mksh,pdksh,ksh', so it can be accessed from the three
> >packages and everybody receives mails. I am bcc'ing those packages to keep
> >them aware.
>
> Ah, okay, thanks.
I subscribed successfully to this bug report, so there should be no need to
explicitly cc me (However, I will not get angry at that).
--
Agustin
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