freebsd-dev/sys
David Chisnall 3a522ba1bc Pass the syscall number to capsicum permission-denied signals
The syscall number is stored in the same register as the syscall return
on amd64 (and possibly other architectures) and so it is impossible to
recover in the signal handler after the call has returned.  This small
tweak delivers it in the `si_value` field of the signal, which is
sufficient to catch capability violations and emulate them with a call
to a more-privileged process in the signal handler.

Approved by:	markj (mentor)

Reviewed by:	kib, bcr (manpages)

Differential Revision: https://reviews.freebsd.org/D29185
2021-07-10 17:19:52 +01:00
..
amd64 Pass the syscall number to capsicum permission-denied signals 2021-07-10 17:19:52 +01:00
arm Pass the syscall number to capsicum permission-denied signals 2021-07-10 17:19:52 +01:00
arm64 Pass the syscall number to capsicum permission-denied signals 2021-07-10 17:19:52 +01:00
bsm
cam cam: enable kern.cam.ada.enable_uma_ccbs by default 2021-07-07 09:40:34 +01:00
cddl
compat cloudabi and linux ABIs: do not call umtx_thread_cleanup() from thr_exit syscall 2021-07-07 14:12:14 +03:00
conf fan53555: attach to build and switch from syr827 2021-07-08 20:17:45 +00:00
contrib zfs: merge openzfs/zfs@bdd11cbb9 (master) into main 2021-07-07 23:31:52 +02:00
crypto ossl: Use crypto_cursor_segment(). 2021-05-25 16:59:19 -07:00
ddb
dev hwpmc: Disable KASAN in pmc_save_kernel_callchain() 2021-07-09 20:38:50 -04:00
dts dts: Bump the freebsd branding version to 5.13 2021-07-01 18:48:56 +02:00
fs nfscl: Add a Linux compatible "nconnect" mount option 2021-07-08 17:39:04 -07:00
gdb
geom geom_label: Remove an old sysinstall(8) workaround 2021-07-05 16:15:32 +01:00
gnu
i386 Pass the syscall number to capsicum permission-denied signals 2021-07-10 17:19:52 +01:00
isa newbus: Move from bus_child_{pnpinfo,location}_src to bus_child_{pnpinfo,location} with sbuf 2021-06-22 20:52:06 -06:00
kern Pass the syscall number to capsicum permission-denied signals 2021-07-10 17:19:52 +01:00
kgssapi
libkern
mips Pass the syscall number to capsicum permission-denied signals 2021-07-10 17:19:52 +01:00
modules zfs: update zfs_config.h to match current OpenZFS version (bdd11cbb9) 2021-07-10 17:43:16 +02:00
net pf: add DIOCGETSTATESV2 2021-07-09 10:29:53 +02:00
net80211 net80211: ieee80211_probereq_ie fix length calculation for hw scans 2021-06-28 12:17:11 +00:00
netgraph Consistently use the SOLISTENING() macro 2021-06-14 17:32:27 -04:00
netinet libalias: fix divide by zero causing panic 2021-07-10 13:08:18 +02:00
netinet6 sctp: Fix errno in case of association setup failures 2021-07-09 23:19:25 +02:00
netipsec ipsec: globalize lft zone and zero out buffers at allocation time 2021-06-28 08:14:26 +00:00
netpfil pf: bound DIOCGETSTATESV2 memory use 2021-07-09 10:30:02 +02:00
netsmb netsmb: Avoid a read-after-free in smb_t2_request_int() 2021-05-26 10:45:40 -04:00
nfs
nfsclient
nfsserver
nlm
ofed mlx4/OFED: replace the struct net_device with struct ifnet 2021-06-18 21:20:08 +00:00
opencrypto crypto: Remove now-unused crypto_cursor_seg{base,len}. 2021-06-16 15:23:16 -07:00
powerpc Pass the syscall number to capsicum permission-denied signals 2021-07-10 17:19:52 +01:00
riscv Pass the syscall number to capsicum permission-denied signals 2021-07-10 17:19:52 +01:00
rpc Consistently use the SOLISTENING() macro 2021-06-14 17:32:27 -04:00
security mac: cheaper check for ifnet_create_mbuf and ifnet_check_transmit 2021-06-29 15:06:45 +02:00
sys Pass the syscall number to capsicum permission-denied signals 2021-07-10 17:19:52 +01:00
teken
tests tests: Revise FIB lookups per second benchmarking routines 2021-06-17 08:49:09 +02:00
tools makesyscalls.lua: improve generated file style(9) compliance 2021-05-13 13:59:25 -04:00
ufs ffs_softdep: force sync if journal is low in journal_check_space 2021-06-23 23:47:05 +03:00
vm uma: Fix a few problems with KASAN integration 2021-07-09 20:38:50 -04:00
x86 x86: Mark the trapframe as initialized in ipi_bitmap_handler() 2021-07-09 20:38:50 -04:00
xdr
xen x86/xen: remove PVHv1 code 2021-05-17 11:41:21 +02:00
Makefile