Continue to introduce Capsicum Capability Mode support:
Add a new system call flag, SYF_CAPENABLED, which indicates that a particular system call is available in capability mode. Add a new configuration file, kern/capabilities.conf (similar files may be introduced for other ABIs in the future), which enumerates system calls that are available in capability mode. When a new system call is added to syscalls.master, it will also need to be added here (if needed). Teach sysent parts to use this file to set values for SYF_CAPENABLED for the native ABI. Reviewed by: anderson Discussed with: benl, kris, pjd Obtained from: Capsicum Project MFC after: 3 months
This commit is contained in:
Robert Watson
parent
3ddc3c85ab
commit
08e6d9fad8
@ -10,7 +10,8 @@ sysent: init_sysent.c syscalls.c ../sys/syscall.h ../sys/syscall.mk \
|
||||
../sys/sysproto.h
|
||||
|
||||
init_sysent.c syscalls.c systrace_args.c ../sys/syscall.h \
|
||||
../sys/syscall.mk ../sys/sysproto.h: makesyscalls.sh syscalls.master
|
||||
../sys/syscall.mk ../sys/sysproto.h: makesyscalls.sh syscalls.master \
|
||||
capabilities.conf
|
||||
-mv -f init_sysent.c init_sysent.c.bak
|
||||
-mv -f syscalls.c syscalls.c.bak
|
||||
-mv -f systrace_args.c systrace_args.c.bak
|
||||
|
||||
756
sys/kern/capabilities.conf
Normal file
756
sys/kern/capabilities.conf
Normal file
@ -0,0 +1,756 @@
|
||||
##
|
||||
## Copyright (c) 2008-2010 Robert N. M. Watson
|
||||
## All rights reserved.
|
||||
##
|
||||
## This software was developed at the University of Cambridge Computer
|
||||
## Laboratory with support from a grant from Google, Inc.
|
||||
##
|
||||
## Redistribution and use in source and binary forms, with or without
|
||||
## modification, are permitted provided that the following conditions
|
||||
## are met:
|
||||
## 1. Redistributions of source code must retain the above copyright
|
||||
## notice, this list of conditions and the following disclaimer.
|
||||
## 2. Redistributions in binary form must reproduce the above copyright
|
||||
## notice, this list of conditions and the following disclaimer in the
|
||||
## documentation and/or other materials provided with the distribution.
|
||||
##
|
||||
## THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
## ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
## ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
## FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
## OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
## OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
## SUCH DAMAGE.
|
||||
##
|
||||
## List of system calls enabled in capability mode, one name per line.
|
||||
##
|
||||
## Notes:
|
||||
## - sys_exit(2), abort2(2) and close(2) are very important.
|
||||
## - Sorted alphabetically, please keep it that way.
|
||||
##
|
||||
## $FreeBSD$
|
||||
##
|
||||
|
||||
##
|
||||
## Allow ACL and MAC label operations by file descriptor, subject to
|
||||
## capability rights. Allow MAC label operations on the current process but
|
||||
## we will need to scope __mac_get_pid(2).
|
||||
##
|
||||
__acl_aclcheck_fd
|
||||
__acl_delete_fd
|
||||
__acl_get_fd
|
||||
__acl_set_fd
|
||||
__mac_get_fd
|
||||
#__mac_get_pid
|
||||
__mac_get_proc
|
||||
__mac_set_fd
|
||||
__mac_set_proc
|
||||
|
||||
##
|
||||
## Allow sysctl(2) as we scope internal to the call; this is a global
|
||||
## namespace, but there are several critical sysctls required for almost
|
||||
## anything to run, such as hw.pagesize. For now that policy lives in the
|
||||
## kernel for performance and simplicity, but perhaps it could move to a
|
||||
## proxying daemon in userspace.
|
||||
##
|
||||
__sysctl
|
||||
|
||||
##
|
||||
## Allow umtx operations as these are scoped by address space.
|
||||
##
|
||||
## XXRW: Need to check this very carefully.
|
||||
##
|
||||
_umtx_lock
|
||||
_umtx_op
|
||||
_umtx_unlock
|
||||
|
||||
##
|
||||
## Allow process termination using abort2(2).
|
||||
##
|
||||
abort2
|
||||
|
||||
##
|
||||
## Allow accept(2) since it doesn't manipulate namespaces directly, rather
|
||||
## relies on existing bindings on a socket, subject to capability rights.
|
||||
##
|
||||
accept
|
||||
|
||||
##
|
||||
## Allow AIO operations by file descriptor, subject to capability rights.
|
||||
##
|
||||
aio_cancel
|
||||
aio_error
|
||||
aio_fsync
|
||||
aio_read
|
||||
aio_return
|
||||
aio_suspend
|
||||
aio_waitcomplete
|
||||
aio_write
|
||||
|
||||
##
|
||||
## audit(2) is a global operation, submitting to the global trail, but it is
|
||||
## controlled by privilege, and it might be useful to be able to submit
|
||||
## records from sandboxes. For now, disallow, but we may want to think about
|
||||
## providing some sort of proxy service for this.
|
||||
##
|
||||
#audit
|
||||
|
||||
##
|
||||
## Disllow bind(2) for now, even though we support CAP_BIND.
|
||||
##
|
||||
## XXXRW: Revisit this.
|
||||
##
|
||||
#bind
|
||||
|
||||
##
|
||||
## Allow capability mode and capability system calls.
|
||||
##
|
||||
cap_enter
|
||||
cap_getmode
|
||||
cap_getrights
|
||||
cap_new
|
||||
|
||||
##
|
||||
## Allow read-only clock operations.
|
||||
##
|
||||
clock_gettime
|
||||
clock_getres
|
||||
|
||||
##
|
||||
## Always allow file descriptor close(2).
|
||||
##
|
||||
close
|
||||
closefrom
|
||||
|
||||
##
|
||||
## Disallow connect(2) for now, despite CAP_CONNECT.
|
||||
##
|
||||
## XXXRW: Revisit this.
|
||||
##
|
||||
#connect
|
||||
|
||||
##
|
||||
## cpuset(2) and related calls require scoping by process, but should
|
||||
## eventually be allowed, at least in the current process case.
|
||||
##
|
||||
#cpuset
|
||||
#cpuset_getaffinity
|
||||
#cpuset_getid
|
||||
#cpuset_setaffinity
|
||||
#cpuset_setid
|
||||
|
||||
##
|
||||
## Always allow dup(2) and dup2(2) manipulation of the file descriptor table.
|
||||
##
|
||||
dup
|
||||
dup2
|
||||
|
||||
##
|
||||
## Allow extended attribute operations by file descriptor, subject to
|
||||
## capability rights.
|
||||
##
|
||||
extattr_delete_fd
|
||||
extattr_get_fd
|
||||
extattr_list_fd
|
||||
extattr_set_fd
|
||||
|
||||
##
|
||||
## Allow changing file flags, mode, and owner by file descriptor, subject to
|
||||
## capability rights.
|
||||
##
|
||||
fchflags
|
||||
fchmod
|
||||
fchown
|
||||
|
||||
##
|
||||
## For now, allow fcntl(2), subject to capability rights, but this probably
|
||||
## needs additional scoping.
|
||||
##
|
||||
fcntl
|
||||
|
||||
##
|
||||
## Allow fexecve(2), subject to capability rights. We perform some scoping,
|
||||
## such as disallowing privilege escalation.
|
||||
##
|
||||
fexecve
|
||||
|
||||
##
|
||||
## Allow flock(2), subject to capability rights.
|
||||
##
|
||||
flock
|
||||
|
||||
##
|
||||
## Allow fork(2), even though it returns pids -- some applications seem to
|
||||
## prefer this interface.
|
||||
##
|
||||
fork
|
||||
|
||||
##
|
||||
## Allow fpathconf(2), subject to capability rights.
|
||||
##
|
||||
fpathconf
|
||||
|
||||
##
|
||||
## Allow various file descriptor-based I/O operations, subject to capability
|
||||
## rights. mmap(2) requires further attention.
|
||||
##
|
||||
freebsd6_ftruncate
|
||||
freebsd6_lseek
|
||||
freebsd6_mmap
|
||||
freebsd6_pread
|
||||
freebsd6_pwrite
|
||||
|
||||
##
|
||||
## Allow querying file and file system state with fstat(2) and fstatfs(2),
|
||||
## subject to capability rights.
|
||||
##
|
||||
fstat
|
||||
fstatfs
|
||||
|
||||
##
|
||||
## Allow further file descriptor-based I/O operations, subject to capability
|
||||
## rights.
|
||||
##
|
||||
fsync
|
||||
ftruncate
|
||||
|
||||
##
|
||||
## Allow futimes(2), subject to capability rights.
|
||||
##
|
||||
futimes
|
||||
|
||||
##
|
||||
## Allow querying process audit state, subject to normal access control.
|
||||
##
|
||||
getaudit
|
||||
getaudit_addr
|
||||
getauid
|
||||
|
||||
##
|
||||
## Allow thread context management with getcontext(2).
|
||||
##
|
||||
getcontext
|
||||
|
||||
##
|
||||
## Allow directory I/O on a file descriptor, subject to capability rights.
|
||||
## Originally we had separate capabilities for directory-specific read
|
||||
## operations, but on BSD we allow reading the raw directory data, so we just
|
||||
## rely on CAP_READ (etc) now.
|
||||
##
|
||||
## XXXRW: Possibly these should also use CAP_SEEK.
|
||||
##
|
||||
getdents
|
||||
getdirentries
|
||||
|
||||
##
|
||||
## Allow querying certain trivial global state.
|
||||
##
|
||||
getdomainname
|
||||
|
||||
##
|
||||
## Allow querying current process credential state.
|
||||
##
|
||||
getegid
|
||||
geteuid
|
||||
|
||||
##
|
||||
## Allow querying certain trivial global state.
|
||||
##
|
||||
gethostid
|
||||
gethostname
|
||||
|
||||
##
|
||||
## Allow querying per-process timer.
|
||||
##
|
||||
getitimer
|
||||
|
||||
##
|
||||
## Allow querying current process credential state.
|
||||
##
|
||||
getgid
|
||||
getgroups
|
||||
getlogin
|
||||
|
||||
##
|
||||
## Allow querying certain trivial global state.
|
||||
##
|
||||
getpagesize
|
||||
getpeername
|
||||
|
||||
##
|
||||
## Allow querying certain per-process scheduling, resource limit, and
|
||||
## credential state.
|
||||
##
|
||||
## XXXRW: getpgid(2) needs scoping. It's not clear if it's worth scoping
|
||||
## getppid(2). getpriority(2) needs scoping. getrusage(2) needs scoping.
|
||||
## getsid(2) needs scoping.
|
||||
##
|
||||
getpgid
|
||||
getpgrp
|
||||
getpid
|
||||
getppid
|
||||
getpriority
|
||||
getresgid
|
||||
getresuid
|
||||
getrlimit
|
||||
getrusage
|
||||
getsid
|
||||
|
||||
##
|
||||
## Allow querying socket state, subject to capability rights.
|
||||
##
|
||||
## XXXRW: getsockopt(2) may need more attention.
|
||||
##
|
||||
getsockname
|
||||
getsockopt
|
||||
|
||||
##
|
||||
## Allow querying the global clock.
|
||||
##
|
||||
gettimeofday
|
||||
|
||||
##
|
||||
## Allow querying current process credential state.
|
||||
##
|
||||
getuid
|
||||
|
||||
##
|
||||
## Disallow ioctl(2) for now, as frequently ioctl(2) operations have global
|
||||
## scope, but this is a tricky one as it is also required for tty control.
|
||||
## We do have a capability right for this operation.
|
||||
##
|
||||
## XXXRW: This needs to be revisited.
|
||||
##
|
||||
#ioctl
|
||||
|
||||
##
|
||||
## Allow querying current process credential state.
|
||||
##
|
||||
issetugid
|
||||
|
||||
##
|
||||
## Allow kevent(2), as we will authorize based on capability rights on the
|
||||
## target descriptor.
|
||||
##
|
||||
## XXXRW: Do we do this?
|
||||
##
|
||||
kevent
|
||||
|
||||
##
|
||||
## Allow message queue operations on file descriptors, subject to capability
|
||||
## rights.
|
||||
##
|
||||
kmq_notify
|
||||
kmq_setattr
|
||||
kmq_timedreceive
|
||||
kmq_timedsend
|
||||
|
||||
##
|
||||
## Allow kqueue(2), we will control use.
|
||||
##
|
||||
kqueue
|
||||
|
||||
##
|
||||
## Allow managing per-process timers.
|
||||
##
|
||||
ktimer_create
|
||||
ktimer_delete
|
||||
ktimer_getoverrun
|
||||
ktimer_gettime
|
||||
ktimer_settime
|
||||
|
||||
##
|
||||
## We can't allow ktrace(2) because it relies on a global namespace, but we
|
||||
## might want to introduce an fktrace(2) of some sort.
|
||||
##
|
||||
#ktrace
|
||||
|
||||
##
|
||||
## Allow AIO operations by file descriptor, subject to capability rights.
|
||||
##
|
||||
lio_listio
|
||||
|
||||
##
|
||||
## Allow listen(2), subject to capability rights.
|
||||
##
|
||||
## XXXRW: One might argue this manipulates a global namespace.
|
||||
##
|
||||
listen
|
||||
|
||||
##
|
||||
## Allow I/O-related file descriptors, subject to capability rights.
|
||||
##
|
||||
lseek
|
||||
|
||||
##
|
||||
## Allow MAC label operations by file descriptor, subject to capability
|
||||
## rights.
|
||||
##
|
||||
mac_get_fd
|
||||
mac_set_fd
|
||||
|
||||
##
|
||||
## Allow simple VM operations on the current process.
|
||||
##
|
||||
madvise
|
||||
mincore
|
||||
minherit
|
||||
mlock
|
||||
mlockall
|
||||
|
||||
##
|
||||
## Allow memory mapping a file descriptor, and updating protections, subject
|
||||
## to capability rights.
|
||||
##
|
||||
## XXXRW: We currently don't properly mask VM protections using capability
|
||||
## rights.
|
||||
##
|
||||
mmap
|
||||
mprotect
|
||||
|
||||
##
|
||||
## Allow simple VM operations on the current process.
|
||||
##
|
||||
msync
|
||||
munlock
|
||||
munlockall
|
||||
munmap
|
||||
|
||||
##
|
||||
## Allow the current process to sleep.
|
||||
##
|
||||
nanosleep
|
||||
|
||||
##
|
||||
## Allow querying the global clock.
|
||||
##
|
||||
ntp_gettime
|
||||
|
||||
##
|
||||
## Allow AIO operations by file descriptor, subject to capability rights.
|
||||
##
|
||||
oaio_read
|
||||
oaio_write
|
||||
|
||||
##
|
||||
## Allow simple VM operations on the current process.
|
||||
##
|
||||
obreak
|
||||
|
||||
##
|
||||
## Allow AIO operations by file descriptor, subject to capability rights.
|
||||
##
|
||||
olio_listio
|
||||
|
||||
##
|
||||
## Once Capsicum is fully merged, some of the *at(2) calls which can be
|
||||
## semantically constrained will be permitted in capability mode. For now,
|
||||
## we will simply not allow them to be called.
|
||||
##
|
||||
#faccessat
|
||||
#fstatat
|
||||
#fchmodat
|
||||
#futimesat
|
||||
#mkdirat
|
||||
#rmdirat
|
||||
#mkfifoat
|
||||
#mknodat
|
||||
#openat
|
||||
#renameat
|
||||
|
||||
##
|
||||
## ONCE CAPSICUM IS FULLY MERGED:
|
||||
## Allow entry into open(2). This system call will fail, since access to the global
|
||||
## file namespace has been disallowed, but allowing entry into the syscall means
|
||||
## that an audit trail will be generated (which is also very useful for debugging),
|
||||
##
|
||||
#open
|
||||
|
||||
##
|
||||
## Allow poll(2), which will be scoped by capability rights.
|
||||
##
|
||||
## XXXRW: Perhaps we don't need the OpenBSD version?
|
||||
## XXXRW: We don't yet do that scoping.
|
||||
##
|
||||
openbsd_poll
|
||||
|
||||
##
|
||||
## Process descriptor-related system calls are allowed.
|
||||
##
|
||||
pdfork
|
||||
pdgetpid
|
||||
pdkill
|
||||
pdwait4
|
||||
|
||||
##
|
||||
## Allow pipe(2).
|
||||
##
|
||||
pipe
|
||||
|
||||
##
|
||||
## Allow poll(2), which will be scoped by capability rights.
|
||||
## XXXRW: We don't yet do that scoping.
|
||||
##
|
||||
poll
|
||||
|
||||
##
|
||||
## Allow I/O-related file descriptors, subject to capability rights.
|
||||
##
|
||||
pread
|
||||
preadv
|
||||
|
||||
##
|
||||
## Allow access to profiling state on the current process.
|
||||
##
|
||||
profil
|
||||
|
||||
##
|
||||
## Disallow ptrace(2) for now, but we do need debugging facilities in
|
||||
## capability mode, so we will want to revisit this, possibly by scoping its
|
||||
## operation.
|
||||
##
|
||||
#ptrace
|
||||
|
||||
##
|
||||
## Allow I/O-related file descriptors, subject to capability rights.
|
||||
##
|
||||
pwrite
|
||||
pwritev
|
||||
read
|
||||
readv
|
||||
recv
|
||||
recvfrom
|
||||
recvmsg
|
||||
|
||||
##
|
||||
## Allow real-time scheduling primitives to be used.
|
||||
##
|
||||
## XXXRW: These require scoping.
|
||||
##
|
||||
rtprio
|
||||
rtprio_thread
|
||||
|
||||
##
|
||||
## Allow simple VM operations on the current process.
|
||||
##
|
||||
sbrk
|
||||
|
||||
##
|
||||
## Allow querying trivial global scheduler state.
|
||||
##
|
||||
sched_get_priority_max
|
||||
sched_get_priority_min
|
||||
|
||||
##
|
||||
## Allow various thread/process scheduler operations.
|
||||
##
|
||||
## XXXRW: Some of these require further scoping.
|
||||
##
|
||||
sched_getparam
|
||||
sched_getscheduler
|
||||
sched_rr_getinterval
|
||||
sched_setparam
|
||||
sched_setscheduler
|
||||
sched_yield
|
||||
|
||||
##
|
||||
## Allow I/O-related file descriptors, subject to capability rights.
|
||||
##
|
||||
sctp_generic_recvmsg
|
||||
sctp_generic_sendmsg
|
||||
sctp_generic_sendmsg_iov
|
||||
sctp_peeloff
|
||||
|
||||
##
|
||||
## Allow select(2), which will be scoped by capability rights.
|
||||
##
|
||||
## XXXRW: But is it?
|
||||
##
|
||||
select
|
||||
|
||||
##
|
||||
## Allow I/O-related file descriptors, subject to capability rights. Use of
|
||||
## explicit addresses here is restricted by the system calls themselves.
|
||||
##
|
||||
send
|
||||
sendfile
|
||||
sendmsg
|
||||
sendto
|
||||
|
||||
##
|
||||
## Allow setting per-process audit state, which is controlled separately by
|
||||
## privileges.
|
||||
##
|
||||
setaudit
|
||||
setaudit_addr
|
||||
setauid
|
||||
|
||||
##
|
||||
## Allow setting thread context.
|
||||
##
|
||||
setcontext
|
||||
|
||||
##
|
||||
## Allow setting current process credential state, which is controlled
|
||||
## separately by privilege.
|
||||
##
|
||||
setegid
|
||||
seteuid
|
||||
setgid
|
||||
|
||||
##
|
||||
## Allow use of the process interval timer.
|
||||
##
|
||||
setitimer
|
||||
|
||||
##
|
||||
## Allow setpriority(2).
|
||||
##
|
||||
## XXXRW: Requires scoping.
|
||||
##
|
||||
setpriority
|
||||
|
||||
##
|
||||
## Allow setting current process credential state, which is controlled
|
||||
## separately by privilege.
|
||||
##
|
||||
setregid
|
||||
setresgid
|
||||
setresuid
|
||||
setreuid
|
||||
|
||||
##
|
||||
## Allow setting process resource limits with setrlimit(2).
|
||||
##
|
||||
setrlimit
|
||||
|
||||
##
|
||||
## Allow creating a new session with setsid(2).
|
||||
##
|
||||
setsid
|
||||
|
||||
##
|
||||
## Allow setting socket options with setsockopt(2), subject to capability
|
||||
## rights.
|
||||
##
|
||||
## XXXRW: Might require scoping.
|
||||
##
|
||||
setsockopt
|
||||
|
||||
##
|
||||
## Allow setting current process credential state, which is controlled
|
||||
## separately by privilege.
|
||||
##
|
||||
setuid
|
||||
|
||||
##
|
||||
## ONCE CAPSICUM IS FULLY MERGED:
|
||||
## Allow shm_open(2), which is scoped so as to allow only access to new
|
||||
## anonymous objects.
|
||||
##
|
||||
#shm_open
|
||||
|
||||
##
|
||||
## Allow I/O-related file descriptors, subject to capability rights.
|
||||
##
|
||||
shutdown
|
||||
|
||||
##
|
||||
## Allow signal control on current process.
|
||||
##
|
||||
sigaction
|
||||
sigaltstack
|
||||
sigblock
|
||||
sigpending
|
||||
sigprocmask
|
||||
sigqueue
|
||||
sigreturn
|
||||
sigsetmask
|
||||
sigstack
|
||||
sigsuspend
|
||||
sigtimedwait
|
||||
sigvec
|
||||
sigwaitinfo
|
||||
|
||||
##
|
||||
## Allow creating new socket pairs with socket(2) and socketpair(2).
|
||||
##
|
||||
socket
|
||||
socketpair
|
||||
|
||||
##
|
||||
## Allow simple VM operations on the current process.
|
||||
##
|
||||
## XXXRW: Kernel doesn't implement this, so drop?
|
||||
##
|
||||
sstk
|
||||
|
||||
##
|
||||
## Do allow sync(2) for now, but possibly shouldn't.
|
||||
##
|
||||
sync
|
||||
|
||||
##
|
||||
## Always allow process termination with sys_exit(2).
|
||||
##
|
||||
sys_exit
|
||||
|
||||
##
|
||||
## sysarch(2) does rather diverse things, but is required on at least i386
|
||||
## in order to configure per-thread data. As such, it's scoped on each
|
||||
## architecture.
|
||||
##
|
||||
sysarch
|
||||
|
||||
##
|
||||
## Allow thread operations operating only on current process.
|
||||
##
|
||||
thr_create
|
||||
thr_exit
|
||||
thr_kill
|
||||
|
||||
##
|
||||
## Disallow thr_kill2(2), as it may operate beyond the current process.
|
||||
##
|
||||
## XXXRW: Requires scoping.
|
||||
##
|
||||
#thr_kill2
|
||||
|
||||
##
|
||||
## Allow thread operations operating only on current process.
|
||||
##
|
||||
thr_new
|
||||
thr_self
|
||||
thr_set_name
|
||||
thr_suspend
|
||||
thr_wake
|
||||
|
||||
##
|
||||
## Allow manipulation of the current process umask with umask(2).
|
||||
##
|
||||
umask
|
||||
|
||||
##
|
||||
## Allow submitting of process trace entries with utrace(2).
|
||||
##
|
||||
utrace
|
||||
|
||||
##
|
||||
## Allow generating UUIDs with uuidgen(2).
|
||||
##
|
||||
uuidgen
|
||||
|
||||
##
|
||||
## Allow I/O-related file descriptors, subject to capability rights.
|
||||
##
|
||||
write
|
||||
writev
|
||||
|
||||
##
|
||||
## Allow processes to yield(2).
|
||||
##
|
||||
yield
|
||||
@ -39,6 +39,13 @@ sysarg="sysarg.switch.$$"
|
||||
sysprotoend="sysprotoend.$$"
|
||||
systracetmp="systrace.$$"
|
||||
|
||||
if [ -r capabilities.conf ]; then
|
||||
capenabled=`cat capabilities.conf | grep -v "^#" | grep -v "^$"`
|
||||
capenabled=`echo $capenabled | sed 's/ /,/g'`
|
||||
else
|
||||
capenabled=""
|
||||
fi
|
||||
|
||||
trap "rm $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp" 0
|
||||
|
||||
touch $sysaue $sysdcl $syscompat $syscompatdcl $syscompat4 $syscompat4dcl $syscompat6 $syscompat6dcl $syscompat7 $syscompat7dcl $sysent $sysinc $sysarg $sysprotoend $systracetmp
|
||||
@ -97,8 +104,11 @@ s/\$//g
|
||||
switchname = \"$switchname\"
|
||||
namesname = \"$namesname\"
|
||||
infile = \"$1\"
|
||||
capenabled_string = \"$capenabled\"
|
||||
"'
|
||||
|
||||
split(capenabled_string, capenabled, ",");
|
||||
|
||||
printf "/*\n * System call switch table.\n *\n" > syssw
|
||||
printf " * DO NOT EDIT-- this file is automatically generated.\n" > syssw
|
||||
printf " * $%s$\n", "FreeBSD" > syssw
|
||||
@ -290,6 +300,18 @@ s/\$//g
|
||||
f++ #function return type
|
||||
|
||||
funcname=$f
|
||||
|
||||
#
|
||||
# We now know the func name, so define a flags field for it.
|
||||
# Do this before any other processing as we may return early
|
||||
# from it.
|
||||
#
|
||||
for (cap in capenabled) {
|
||||
if (funcname == capenabled[cap]) {
|
||||
flags = "SYF_CAPENABLED";
|
||||
}
|
||||
}
|
||||
|
||||
if (funcalias == "")
|
||||
funcalias = funcname
|
||||
if (argalias == "") {
|
||||
@ -348,7 +370,7 @@ s/\$//g
|
||||
}
|
||||
|
||||
#
|
||||
# The currently-empty flags field.
|
||||
# The flags, if any.
|
||||
#
|
||||
{
|
||||
flags = "0";
|
||||
|
||||
@ -65,6 +65,11 @@ struct sysent { /* system call table */
|
||||
u_int32_t sy_thrcnt;
|
||||
};
|
||||
|
||||
/*
|
||||
* A system call is permitted in capability mode.
|
||||
*/
|
||||
#define SYF_CAPENABLED 0x00000001
|
||||
|
||||
#define SY_THR_FLAGMASK 0x7
|
||||
#define SY_THR_STATIC 0x1
|
||||
#define SY_THR_DRAINING 0x2
|
||||
|
||||
Loading…
Reference in New Issue
Block a user