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freebsd-skq/sys
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Konstantin Belousov 5b1162b964 For PT_TO_SCE stop that stops the ptraced process upon syscall entry, 
syscall arguments are collected before ptracestop() is called. As a
consequence, debugger cannot modify syscall or its arguments.

For i386, amd64 and ia32 on amd64 MD syscall(), reread syscall number
and arguments after ptracestop(), if debugger modified anything in the
process environment. Since procfs stopeven requires number of syscall
arguments in p_xstat, this cannot be solved by moving stop/trace point
before argument fetching.

Move the code to read arguments into separate function
fetch_syscall_args() to avoid code duplication. Note that ktrace point
for modified syscall is intentionally recorded twice, once with original
arguments, and second time with the arguments set by debugger.

PT_TO_SCX stop is executed after cpu_syscall_set_retval() already.

Reported by:	Ali Polatel <alip exherbo org>
Briefly discussed with:	jhb
MFC after:	3 weeks
2010-01-23 11:45:35 +00:00
..
amd64 For PT_TO_SCE stop that stops the ptraced process upon syscall entry, 2010-01-23 11:45:35 +00:00
arm Move the examples for the 'hints' and 'env' keywords from various GENERIC 2010-01-19 17:20:34 +00:00
boot Add command-line option -dev to set the default value of the currdev 2010-01-18 06:48:24 +00:00
bsm Add audit events for process descriptor system calls, which will appear in 2009-09-29 21:25:59 +00:00
cam - Report SATA in legacy emulation mode still as SATA. 2010-01-10 09:20:56 +00:00
cddl Report ZFS filesystem version instead of the zpool version when we say it. 2010-01-11 23:15:11 +00:00
compat Let us to use our libusb(3) in Linuxolator. 2010-01-18 22:46:06 +00:00
conf - Move .text and all sections up to .bss inclusive to the beginning of 2010-01-23 05:59:10 +00:00
contrib Fix a new header inclusion. 2010-01-21 21:31:39 +00:00
crypto
ddb Replace several instances of 'if (!a & b)' with 'if (!(a &b))' in order 2010-01-08 15:44:49 +00:00
dev Overhaul of the pcii driver: 2010-01-23 07:54:06 +00:00
fs Truncate read request rather than returning EIO if the request is 2010-01-22 08:45:12 +00:00
gdb
geom Expose stripe offset and stripe size through libgeom and geom(8) userland 2010-01-17 06:20:30 +00:00
gnu Bring in the ext2fs work done by Aditya Sarawgi during and after Google Summer 2010-01-14 14:30:54 +00:00
i386 For PT_TO_SCE stop that stops the ptraced process upon syscall entry, 2010-01-23 11:45:35 +00:00
ia64 Add ioctl requests to /dev/io on ia64 for reading and writing 2010-01-14 02:48:39 +00:00
isa Remove extraneous semicolons, no functional changes. 2010-01-07 21:01:37 +00:00
kern For PT_TO_SCE stop that stops the ptraced process upon syscall entry, 2010-01-23 11:45:35 +00:00
kgssapi When the KOBJMETHOD() macro was updated, it resulted in the 2009-06-14 17:33:46 +00:00
libkern Merge from head at r201628. 2010-01-06 05:58:07 +00:00
mips Eliminate octeonregs.h. It was a copy of maltaregs.h with 2010-01-23 06:42:47 +00:00
modules Do not build netgraph kernel modules if WITHOUT_NETGRAPH is set in src.conf 2010-01-16 17:08:22 +00:00
net Do not hold the lock over if_setlladdr() as it calls into the interface driver 2010-01-19 04:29:42 +00:00
net80211 Use the iflladdr_event event to keep the mac address on the vap in sync with 2010-01-19 05:00:57 +00:00
netatalk Reverse misordered unlock and lock in at_control for netatalk phase I 2009-08-12 10:44:13 +00:00
netgraph Declare a new EVENTHANDLER called iflladdr_event which signals that the L2 2010-01-18 20:34:00 +00:00
netinet Use [] instead of [0] for flexible arrays. 2010-01-22 07:53:41 +00:00
netinet6 Garbage collect references to the no longer implemented tcp_fasttimo(). 2010-01-17 13:07:52 +00:00
netipsec Enable IPcomp by default. 2009-11-29 20:47:43 +00:00
netipx Use queue(9) instead of hand-crafted link lists for the global IPX 2009-06-24 20:57:50 +00:00
netnatm
netncp
netsmb Don't print out a message on loading a module. 'kldload -v' and 'kldstat 2009-09-10 18:33:08 +00:00
nfs Revert rev 192323 (nfs_common.c only): 2009-07-12 03:53:52 +00:00
nfsclient Fix a typo in a comment introduced by r202767. 2010-01-21 21:59:10 +00:00
nfsserver Some style(9) fixes in order to fabricate a commit to denote that 2010-01-09 15:59:15 +00:00
nlm Handle GRANTED_RES messages more gracefully: Send along a grant cookie 2009-10-07 19:50:14 +00:00
opencrypto Add comments trying to explain what bad things happen here, i.e. 2010-01-09 15:43:47 +00:00
pc98 Move the examples for the 'hints' and 'env' keywords from various GENERIC 2010-01-19 17:20:34 +00:00
pci Remove extraneous semicolons, no functional changes. 2010-01-07 21:01:37 +00:00
powerpc Move the examples for the 'hints' and 'env' keywords from various GENERIC 2010-01-19 17:20:34 +00:00
rpc Replace the static NGROUPS=NGROUPS_MAX+1=1024 with a dynamic 2010-01-12 07:49:34 +00:00
security Replace the static NGROUPS=NGROUPS_MAX+1=1024 with a dynamic 2010-01-12 07:49:34 +00:00
sparc64 Move the examples for the 'hints' and 'env' keywords from various GENERIC 2010-01-19 17:20:34 +00:00
sun4v Add INCLUDE_CONFIG_FILE in GENERIC on all non-embedded platforms. 2010-01-10 17:44:22 +00:00
sys For PT_TO_SCE stop that stops the ptraced process upon syscall entry, 2010-01-23 11:45:35 +00:00
teken MFC @199204 2009-11-12 00:36:22 +00:00
tools Output a comment on top of each generated file explaining where it came 2009-10-25 09:48:21 +00:00
ufs Cast 64-bit quantity to intptr_t rather than int so as to work properly 2010-01-11 22:42:06 +00:00
vm When a vnode-backed vm object is referenced, it increments the vnode 2010-01-17 21:26:14 +00:00
xdr Add a check for a NULL mbuf ptr at the beginning of xdrmbuf_inline() 2009-08-12 16:27:51 +00:00
xen Remove extraneous semicolons, no functional changes. 2010-01-07 21:01:37 +00:00
Makefile