10 Commits

Author SHA1 Message Date
rpaulo
501752af9c Clang related fixes:
* When calling syslog(), pass a format string.
* Define YY_NO_INPUT on nslexer.l

Submitted by:	Norberto Lopes <nlopes.ml at gmail.com>
2010-10-13 16:57:06 +00:00
kib
b9202ef929 Remove extra FreeBSD tag.
MFC after:	3 days
2010-08-24 13:02:22 +00:00
kib
ccc2cef693 Move the __stack_chk_fail_local@FBSD_1.0 compat symbol definition into
the separate .o for libc_pic.a. This prevents rtld from making the
symbol global.

Putting the stack_protector_compat.c into the public domain acknowledged
by kan.

Reviewed by:	kan
MFC after:	2 weeks
2010-08-24 12:58:54 +00:00
kib
5a79777b44 Use aux vector to get values for SSP canary, pagesize, pagesizes array,
number of host CPUs and osreldate.

This eliminates the last sysctl(2) calls from the dynamically linked image
startup.

No objections from:	kan
Tested by:	marius (sparc64)
MFC after:	1 month
2010-08-17 09:13:26 +00:00
kan
74dba11aaa Make libc.a provide __stack_chk_fail_local weak alias. This is
needed to satisfy static libraries that are compiled with -fpic
and linked into static binary afterwards. Several libraries in
gcc are examples of such static libs.
2009-09-17 13:21:53 +00:00
kan
ef443476d9 Second attempt at eliminating .text relocations in shared libraries
compiled with stack protector.

Use libssp_nonshared library to pull __stack_chk_fail_local symbol into
each library that needs it instead of pulling it from libc. GCC
generates local calls to this function which result in absolute
relocations put into position-independent code segment, making dynamic
loader do extra work every time given shared library is being relocated
and making affected text pages non-shareable.

Reviewed by:        kib
Approved by:        re (kib)
2009-07-14 21:19:13 +00:00
kan
a3faeb1b41 Back out previous revision until better tested fix is ready.
Approved by: re (impliciti, by approving previos check-in)
2009-06-29 01:33:59 +00:00
kan
f780ef8f19 Eliminate .text relocations in shared libraries compiled with stack protector.
Use libssp_nonshared library to pull __stack_chk_fail_local symbol into
each library that needs it instead of pulling it from libc. GCC generates
local calls to this function which result in absolute relocations put into
position-independent code segment, making dynamic loader do extra work everys
time given shared library is being relocated and making affected text pages
non-shareable.

Reviewed by:        kib
Approved by:        re (kensmith)
2009-06-28 23:51:39 +00:00
des
96c25f467e Expose __stack_chk_fail_local() so -fstack-protector-all works. 2007-06-05 08:24:34 +00:00
kan
34d4c477d2 Follow NetBSD, OpenBSD and DragonfyBSD project and add BSD-licensed
SSP functions into FreeBSD libc. Use the same file name and location
for consistency with other projects.
2007-05-19 04:31:43 +00:00