FORTIFY_SOURCE feature of libssp, thus checking the size of arguments to
various string and memory copy and set functions (as well as a few system
calls and other miscellany) where known at function entry. RedHat has
evidently built all "core system packages" with this option for some time.
This option should be used at the top of Makefiles (or Makefile.inc where
this is used for subdirectories) but after any setting of LIB.
This is only useful for userland code, and cannot be used in libc or in
any code which includes the libc internals, because it overrides certain
libc functions with macros. Some effort has been made to make USE_FORT=yes
work correctly for a full-system build by having the bsd.sys.mk logic
disable the feature where it should not be used (libc, libssp iteself,
the kernel) but no attempt has been made to build the entire system with
USE_FORT and doing so will doubtless expose numerous bugs and misfeatures.
Adjust the system build so that all programs and libraries that are setuid,
directly handle network data (including serial comm data), perform
authentication, or appear likely to have (or have a history of having)
data-driven bugs (e.g. file(1)) are built with USE_FORT=yes by default,
with the exception of libc, which cannot use USE_FORT and thus uses
only USE_SSP by default. Tested on i386 with no ill results; USE_FORT=no
per-directory or in a system build will disable if desired.
with a build problem for sparc. The reason is that <dev/tc/sticio.h>
(yes, irrelevant for sparc...) wants NBPG declared, but for sparc user-land
that symbol is not available since sun4/sun4c/sun4m do not all share the
same page size.
to be the first entry, effectively resetting context of all processes to
default emulation on every EMUL trace record
rewrite ectx_find() to fix this, using <sys/queue.h> LIST for readability
this fix should once and for all remove need to ever use -e option,
and makes kdump work properly for traces with processes under different
emulations
ioctl names. This makes sure that each program is built with its own
copy even if object directories are not used. This avoids build
failures when two or more make jobs are used in parallel.
conflicts.
XXX: Fix the conflicts.
1. chio: change to 'x' from 'c' so that it does not conflict with cdio.
keep the 'c' ioctls in the driver for compat.
2. ppp/slip: change SLCGUNIT to some other number and accept the old number
in the driver.
3. ipf: [3 instances] Have darren fix them.
records for 32 bit & 64 bit processes. we still make some adjustments
when dealing with 32-bit processes, but largely things are handled the
same now. make the code to match "netbsd32_<syscall>" in place of
plain "<syscall>" more general.
EMUL_FLAG_NETBSD32. set EMUL_FLAG_NETBSD32 in any 32 bit on 64 bit
kernel emulation layers.
- if EMUL_FLAG_NETBSD32 is set, calculate the proper argument count.
(XXX: this should use register32_t, but that's not visible to all
builders of kdump...)
now netbsd32_ioctl(2) actually reports sane values, and other arguments
are mostly correctly printed (there are still some signed extension
issues with 32 bit numbers being displayed as "0xffffffff8xxxxxxx".)
- Check names of system calls (for special treatment) because emulations
might use different numbers.
- Report an error if arguments to -p or -m non-numeric.
- Just take last of -x and -Xvalue, stop -X0x80000000 being valid (core dumps).
- Keep 'last used' emulation_ctx at top of list, create on lookup (usually
EMUL anyway), delete when exit called (doesn't return).
- Slightly improve hack to get correct system call name in execve return
when emulation has changed.
- Rename global variables 'current'/'previous' to 'cur_emul'/'prev_emul'.
(TODO: save system call type (and maybe an argument) per pid so GIO trace
format can depend on the actual system call.)
Fixes part of PR sparc64/23473 - but system call arguments will still not be
displayed correctly.
* Don't bother prefixing commands with a line of ${_MKCMD}\
and instead rely upon "make -s". This is less intrusive on
all the Makefiles than the former. Idea from David Laight.
* Rename the variables use to print messages. The scheme now is:
_MKMSG_FOO Run _MKMSG 'foo'
_MKTARGET_FOO Run _MKMSG_FOO ${.TARGET}
From discussion with Alistair Crooks.
Make ktrace -c default to removing all trace points (not just the default ones).
Make kdump default to dumping everything in the trace file.
Add 'A' (all) and '-' (remove following) to valid -t arguments.
Dump data block of UNKNOWN trace points in hex + ascii.
Make first time output with -R 0 (instead of time since epoch).
Use svis() instead of vis() to get " escaped (as \") (needs fixed libc)
Correctly pass unsigned values to svis()
Update man pages.
on little endian systems. It is also much easier to read misaligned
words in a straight byte hexdump.
Cut offset to 3 hex digits so that it fixs in 80 columns and still
leaves a tab at the start of 'continuation' lines.
The ktrace buffer is limited to 4k, so 3 digits is ample.
While we are there, display offsets in the hexdump, it can be useful.
Remove size display in Mach Messages as user processes don't always
fill it correctly.
tls