Ktracing chrooted Apache: file errors

["Steve Shockley" <steve.shockley@shockley.net>]

Running ktrace on Apache non-chrooted, I noticed the following on shutdown:

 16923 httpd    GIO   fd 15 wrote 66 bytes
       "[Mon Sep 30 23:59:08 2002] [notice] caught SIGTERM, shutting down
       "
 16923 httpd    RET   write 66/0x42
 16923 httpd    CALL  close(0xf)
 16923 httpd    RET   close 0
 16923 httpd    CALL  __semctl(0x170001,0,0,0)
 16923 httpd    RET   __semctl 0
 16923 httpd    CALL  close(0x15)
 16923 httpd    RET   close 0
 16923 httpd    CALL  close(0x14)
 16923 httpd    RET   close 0
 16923 httpd    CALL  close(0x13)
 16923 httpd    RET   close 0
 16923 httpd    CALL  close(0x12)
 16923 httpd    RET   close 0
 16923 httpd    CALL  unlink(0xdb034)
 16923 httpd    NAMI  "/var/www/logs/ssl_scache.db"
 16923 httpd    RET   unlink 0
 16923 httpd    CALL  unlink(0xdb054)
 16923 httpd    NAMI  "/var/www/logs/ssl_scache.db"
 16923 httpd    RET   unlink -1 errno 2 No such file or directory
 16923 httpd    CALL  unlink(0xdb074)
 16923 httpd    NAMI  "/var/www/logs/ssl_scache.dir"
 16923 httpd    RET   unlink -1 errno 2 No such file or directory
 16923 httpd    CALL  unlink(0xdb094)
 16923 httpd    NAMI  "/var/www/logs/ssl_scache.pag"
 16923 httpd    RET   unlink -1 errno 2 No such file or directory
 16923 httpd    CALL  unlink(0xdb0b4)
 16923 httpd    NAMI  "/var/www/logs/ssl_scache.db"
 16923 httpd    RET   unlink -1 errno 2 No such file or directory
 16923 httpd    CALL  unlink(0xbd134)
 16923 httpd    NAMI  "/var/www/logs/ssl_scache"
 16923 httpd    RET   unlink -1 errno 2 No such file or directory
 16923 httpd    CALL  __semctl(0x170000,0,0,0)
 16923 httpd    RET   __semctl 0
 16923 httpd    CALL  close(0x11)
 16923 httpd    RET   close 0
 16923 httpd    CALL  close(0x10)
 16923 httpd    RET   close 0
 16923 httpd    CALL  munmap(0x4027a000,0x1000)
 16923 httpd    RET   munmap 0
 16923 httpd    CALL  exit(0)

but with it chrooted, it logs this:

22142 httpd    GIO   fd 15 wrote 66 bytes
       "[Mon Sep 30 23:55:11 2002] [notice] caught SIGTERM, shutting down
       "
 22142 httpd    RET   write 66/0x42
 22142 httpd    CALL  close(0xf)
 22142 httpd    RET   close 0
 22142 httpd    CALL  __semctl(0x160001,0,0,0)
 22142 httpd    RET   __semctl 0
 22142 httpd    CALL  close(0x12)
 22142 httpd    RET   close 0
 22142 httpd    CALL  unlink(0xdb034)
 22142 httpd    NAMI  "/logs/ssl_scache.db"
 22142 httpd    RET   unlink -1 errno 13 Permission denied
 22142 httpd    CALL  unlink(0xdb04c)
 22142 httpd    NAMI  "/logs/ssl_scache.db"
 22142 httpd    RET   unlink -1 errno 13 Permission denied
 22142 httpd    CALL  unlink(0xdb064)
 22142 httpd    NAMI  "/logs/ssl_scache.dir"
 22142 httpd    RET   unlink -1 errno 2 No such file or directory
 22142 httpd    CALL  unlink(0xdb07c)
 22142 httpd    NAMI  "/logs/ssl_scache.pag"
 22142 httpd    RET   unlink -1 errno 2 No such file or directory
 22142 httpd    CALL  unlink(0xdb094)
 22142 httpd    NAMI  "/logs/ssl_scache.db"
 22142 httpd    RET   unlink -1 errno 13 Permission denied
 22142 httpd    CALL  unlink(0xbd134)
 22142 httpd    NAMI  "/logs/ssl_scache"
 22142 httpd    RET   unlink -1 errno 2 No such file or directory
 22142 httpd    CALL  __semctl(0x160000,0,0,0)
 22142 httpd    RET   __semctl 0
 22142 httpd    CALL  close(0x11)
 22142 httpd    RET   close 0
 22142 httpd    CALL  close(0x10)
 22142 httpd    RET   close 0
 22142 httpd    CALL  close(0x6)
 22142 httpd    RET   close 0
 22142 httpd    CALL  close(0x5)
 22142 httpd    RET   close 0
 22142 httpd    CALL  munmap(0x4027a000,0x1000)
 22142 httpd    RET   munmap 0
 22142 httpd    CALL  exit(0)

It seems that if the file exists, it can't access it.

uname -srvp: OpenBSD 3.2 GENERIC#31 Intel Pentium/MMX ("GenuineIntel"
586-class)

To reproduce:
httpd -DSSL
ktrace -dp <pid>
apachectl stop
kdump

compare to:
httpd -DSSL -u
ktrace -dp <pid>
apachectl stop
kdump