calls which are not supported on Linux and therefore cannot be
handled by the rump kernel side syscall emulation (not that they'd
be present in the calling binaries anyway).
emulation of them these get passed as exit values from a pthread as
a void* (c.f. pthread_join(), pthread_exit()).
Do not use the address of an int variable for these, but provide the address
of a void* and assign the value afterwards.
Fixes hijacking of pollts/select on 64bit big endian hosts.
Spotted by and fix from pooka.
- struct vfs_quotactl_args -> struct quotactl_args
- add sys/stdint.h to sys/quotactl.h for clean userland build
- install sys/quotactl.h in /usr/include
- update set lists for same
- add new marshalling code in libquota
- add new unmarshalling code in vfs_syscalls.c
- discard proplib interpreter code in vfs_quotactl.c
- add dispatching code for the 14 quotactl ops in vfs_quotactl.c
- mark the proplib quotactl syscall obsolete
- add a new syscall number for the new quotactl syscall
- change the name of the syscall to __quotactl()
- remove the decl of the old quotactl from quota/quotaprop.h
- add a decl of the new quotactl to sys/quotactl.h
- update the libc build
- update ktruss
- remove proplib marshalling code from libquota
- update copy of syscall table in gdb ppc sources
- hack rumphijack to accomodate new quotactl name (as I recall,
pooka wanted such a name change to simplify something, but I
don't really see what/how)
This change appears to require a kernel version bump for rumpish
reasons.
init. Otherwise powerpc dlsym() DTWT and returns NULL.
(now i have no idea why dlsym() it works from rcinit(), but i'll
opt to not care)
Hah, only took 15min to debug that crap this time around. I'm
quickly approaching zero-time with it.
now possible to use unmodified userspace binaries (rpcbind, mountd,
nfsd) to start a rump nfs service and mount file systems from it.
pain-rustique:42:~> mount
rumpfs on / type rumpfs (local)
10.1.1.1:/export on /mnt type nfs
_not_ get removed if the call goes to the rump namespace.
So, now it's possible to use e.g. tcpdump (and most other utilities
which hardcore a /dev pathname) on a rump kernel:
golem> setenv RUMPHIJACK blanket=/dev/bpf
golem> tcpdump -n -i virt0
tcpdump: WARNING: SIOCGIFADDR: virt0: Device not configured
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on virt0, link-type EN10MB (Ethernet), capture size 96 bytes
21:55:38.925596 IP 192.168.2.101 > 204.152.190.12: ICMP echo request, id 47811, seq 0, length 64
21:55:39.095596 IP 204.152.190.12 > 192.168.2.101: ICMP echo reply, id 47811, seq 0, length 64
(if you additionally set socket=all in RUMPHIJACK, tcpdump doesn't
whine about the "not configured" interface)
dealing with dup2() from a rump kernel fd to a host kernel fd.
Consider:
s1 = socket();
s2 = socket();
dup2(s2, 0);
Instead, maintain a real mapping table (and get on my knees and
pray i don't have to touch this hair-splitting code ever again).
Apparently bourne shell scripts from a rump kernel fs work now
(sh script.sh; ./script.sh doesn't work for obvious "IT'S THE WRONG
FS NAMESPACE" reasons). No test regressions either, so I'm a
happy camper.
function call instead of a call through a function pointer.
Apparently powerpc ld.elf_so gets __hackish_return_address() wrong
if the call is done through a function pointer (digging deeper into
that stuff is beyond my interest).
Thanks to riz for providing access to a macppc for debugging.
Unthanks to the broken toolchain in the default installation which
wasted approximately 4 hours of time last night.
module which is compiled -fno-optimize-sibling-calls instead of
trying to fool the optimizer in various ways in the trampoline.
thanks to yamt for the tip
pooka