On 24 Feb 2000, D. J. Bernstein wrote:
> Peter Samuel writes:
> > Under certain conditions it can leave the queue in a corrupt state.
>
> No, it can't. See INTERNALS in the qmail package for the complete story.
I _know_ what INTERNALS says Dan, but try this test and you'll see that
it does leave the queue in a corrupt state
echo "echo "Fpsamuel\0Tpsamuel\0" > /tmp/envelope
echo hello | qmail-queue 1</tmp/envelope
Because the envelope details do NOT end with two NULL characters,
qmail-queue exits with a 91 and does NOT unlink the mess or intd file.
Here is the relevant part of my truss output:
alarm(86400) = 0
open("pid/26826.951372231.1", O_WRONLY|O_CREAT|O_EXCL, 0644) = 3
fstat(3, 0x000246EC) = 0
link("pid/26826.951372231.1", "mess/21/227882") = 0
unlink("pid/26826.951372231.1") = 0
read(0, " h e l l o\n", 2048) = 6
read(0, 0x00024780, 2048) = 0
write(3, " R e c e i v e d : ( q".., 75) = 75
fdsync(3, O_RDONLY|O_SYNC) = 0
open("intd/227882", O_WRONLY|O_CREAT|O_EXCL, 0644) = 4
read(1, " F p s a m u e l\0 T p s".., 2048) = 19
_exit(91)
And this is what happens when the envelope details are empty
echo hello | qmail-queue 1</dev/null
You'll note that the intd and mess files are unlinked. ie qmail-queue
does the right thing.
open("pid/27027.951372320.1", O_WRONLY|O_CREAT|O_EXCL, 0644) = 3
fstat(3, 0x000246EC) = 0
link("pid/27027.951372320.1", "mess/14/227898") = 0
unlink("pid/27027.951372320.1") = 0
read(0, " h e l l o\n", 2048) = 6
read(0, 0x00024780, 2048) = 0
write(3, " R e c e i v e d : ( q".., 75) = 75
fdsync(3, O_RDONLY|O_SYNC) = 0
open("intd/227898", O_WRONLY|O_CREAT|O_EXCL, 0644) = 4
read(1, 0x00024780, 2048) = 0
fcntl(4, F_FREESP, 0xEFFFF484) = 0
unlink("intd/227898") = 0
fcntl(3, F_FREESP, 0xEFFFF484) = 0
unlink("mess/14/227898") = 0
_exit(54)
I'm running qmail-1.03, Solaris 2.5.1
I can repeat this with qmail-1.03 running Linux 2.0.36 as well.
Regards
Peter
----------
Peter Samuel [EMAIL PROTECTED]
Technical Consultant or at present:
eServ. Pty Ltd [EMAIL PROTECTED]
Phone: +61 2 9206 3410 Fax: +61 2 9281 1301
"If you kill all your unhappy customers, you'll only have happy ones left"
