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640 Commits

Author SHA1 Message Date
matt 86d6d815ae Make sure to call dlerror() to clear any error messages after the relocations 
are done and there are no errors.  This will prevent spurious undefined weak
symbol errors being returned by dlerror().

Fixes PR bin/39240.
 2008-07-29 16:27:01 +00:00
skrll dccd9ddf7f RCSID police 2008-07-24 06:51:58 +00:00
matt 38bdc8954f Refactor common code to _rtld_relocate_plt_object to i386 and arm so they 
act like the other versions.
In _rtld_bind, if the result is 0, call _rtld_die.
Initialize _rtld_sym_zero.st_value to -_rtld_objself.maprelocbase.  Now when
the symbol is resolved, st_value + maprelocbase will equal 0 and the above
check in _rtld_bind will fire and a call to NULL will be avoided.
 2008-07-24 04:39:25 +00:00
christos d3b459e727 abort() if we are trying to use an undefined weak symbol from the plt. Remove 
check from relocate_plt_object() since we cannot return _rtld_sym_zero anymore.
Code from gimpy.
 2008-07-23 18:16:42 +00:00
christos 0d33a45b97 handle sym_zero like x86_64; other ports might need this too. 2008-07-22 22:27:07 +00:00
christos 56e895e29f deal specially with sym_zero, returned by a weak symbol that was not found, 
by retrieving it's name instead of printing random garbage.
 2008-07-21 20:19:28 +00:00
ad 156176be13 Fix error in previous. From nakayama@. 2008-06-05 00:03:20 +00:00
ad 53c5ea5da9 Don't bother unmapping the ELF header unless it overlaps the first load 
section.
 2008-06-03 19:32:32 +00:00
ad 9795e155ec __progname isn't const. 2008-06-03 19:22:07 +00:00
ad 36b49f84f3 Try read() on ld.so.conf. If the file is small, it avoids stat+mmap+munmap. 2008-06-03 18:36:59 +00:00
wiz 488200e6ea Remove trailing whitespace and superfluous .Pp. 2008-05-25 19:48:35 +00:00
martin 11a6dbe728 Convert TNF licenses to new 2 clause variant 2008-04-30 13:10:46 +00:00
martin ce099b4099 Remove clause 3 and 4 from TNF licenses 2008-04-28 20:22:51 +00:00
yamt 8c93baa802 constify 2008-01-14 08:53:42 +00:00
yamt 8a58f724e1 tabify 2008-01-14 08:52:16 +00:00
christos 8fb14189dc make this compile again. 2007-12-29 01:44:03 +00:00
christos 716fde8fa0 simplify; mapbase == vaddrbase from the PaX author. 2007-12-28 19:36:21 +00:00
christos 8636ab52f6 Deal with ASLR PIE executables, by recognizing that phdr != phdr->v_addr 
for PT_PHDR headers when the program has been loader to a vaddr other than
then one specified (a randomized one), and modifying the relocation base
address appropriately (idea from elad)
 2007-12-26 21:14:41 +00:00
christos 8b0637156f No need for stack_protector.o if USE_FORT is no. 
XXX: compiling a binary with -Wl,--dynamic-linker,${NETBSDSRCDIR}/libexec/...
results in stack overflow. Investigate!
 2007-12-26 21:11:52 +00:00
christos 5ad1b72097 print the symbol we are seaching for [when debugging] 2007-12-26 21:10:03 +00:00
ad 558a5ffd0f rtld changes for PR bin/37347: 
- Apply patch from J.T. Conklin to execute .init/.fini functions in order.
- Support DF_1_INITFIRST and mark libc with DF_1_INITFIRST. Shared libs
  should be recording a dependency on libc, but it's too late to do that.

Ok christos@.
 2007-12-07 20:34:04 +00:00
christos 496f9be3e8 support %z 2007-11-24 18:32:26 +00:00
ad 71ac015ebf stack_protector.c has moved. 2007-11-13 15:34:51 +00:00
skrll 29353f93e2 Build a local copy of exit that doesn't call __cxa_finalize. It's not 
needed and drags in a lot of libc via free.
 2007-10-30 17:19:59 +00:00
christos ed1a8fea8d build stack protector locally so that we don't call syslog_ss that results 
in 1/2 of libc dragged in.
 2007-10-29 20:36:31 +00:00
ad bf4b000d16 - Don't use the names malloc/free/etc, since we can end up pulling in libc's 
malloc which is not what we want.
- Remove ancient memory compaction hack. Realloc on free memory is now an
  error again (from joerg@).

Ok christos@.
 2007-10-05 22:21:07 +00:00
christos 596c6ec5db provide xrealloc, and don't cast and use malloc and realloc directly. 2007-09-27 17:52:16 +00:00
christos 2cce1500a2 If we are using SSP, compile in a separate copy of the stack protector 
functions so that we don't end up calling syslog_ss() which drags in
a large portion of libc. Found by skrll...
 2007-09-27 17:51:40 +00:00
christos 6f875d32e2 Don't trust AT_SUN_EXECNAME, if we are set{u,g}id. 2007-09-21 13:57:09 +00:00
christos 6eac115581 delete debug printf 
make regress compile again.
 2007-09-20 19:42:53 +00:00
christos 40cfdb5e3a Use AT_SUN_EXECPATH instead of argv[0] for the executable name. This needs 
kernel support, which is not there yet, thus $ORIGIN is broken at this time.
This is ok, nothing uses it yet.
 2007-09-20 14:14:25 +00:00
cube f7779133cd Don't remove the last component of filename before calling 
_rtld_digest_dynamic:  it is done in expand(), and doing it twice is once
too much.  This fixes $ORIGIN expansion for dependencies.
 2007-09-20 07:50:32 +00:00
tnn ea0fc2f827 5 is not a valid version for .Nx, so change it to 5.0. 2007-09-13 21:32:14 +00:00
joerg ad61ac15d2 Don't define bool, false and true. Use stdbool.h. 2007-09-02 09:57:16 +00:00
christos 2ffe4b875f Use an elf note to handle pax arguments. This is a temporary solution to 
avoid wasting OS flag bits. In the future we'll probably use fileassoc to
achieve this (once there is a way to make fileassoc persistent) or in the
shorter term libelf, so that we can add and remove the note on demand instead
of burning bits on each binary. Of course since this is a tool, this means
that we'll need to think about how to handle libelf...
 2007-06-24 20:35:36 +00:00
christos 3b320420fe fix a comment. 2007-05-18 21:46:39 +00:00
christos 04ee85ad50 Support Solaris-like $ORIGIN etc. expansions in paths. 2007-05-18 21:44:08 +00:00
scw 596a371d09 Remove a test for defined(__SH5__). 2007-04-08 10:02:35 +00:00
scw 5764a76889 Remove support for NetBSD/{,evb}sh5. 2007-04-08 09:35:21 +00:00
matt 549524f84f Deal with MKPICLIB != no. 2007-03-15 17:27:15 +00:00
matt ee98d74a6b Remove MD COMBRELOC support since it's now MI. 
Enable COMBRELOC for all arches
 2007-02-23 01:17:11 +00:00
matt 364993dede Don't use cached results for plt lookups (nor save them). 2007-02-23 01:16:32 +00:00
matt 4d10e5e667 Make the COMBRELOC support generic. 2007-02-22 18:57:48 +00:00
martin 3cc1de3d7b Add COMBRELOC support 2007-02-15 19:42:13 +00:00
skrll 1fddd99f52 Provide COMBRELOC support for amd64 in answer to PR/35589. 
Some statistics:

base + COMBRELOC
$ time (for i in `seq 100`;do noatun --help>/dev/null;done)
(; for i in `seq 100`; do; noatun --help > /dev/null; done; )  148.64s
user 4.82s system 99% cpu 2:33.93 total

base + DF caching:
$ time (for i in `seq 100`;do noatun --help>/dev/null;done)
(; for i in `seq 100`; do; noatun --help > /dev/null; done; )  151.15s
user 5.53s system 99% cpu 2:37.23 total

base:
$ time (for i in `seq 100`;do noatun --help>/dev/null;done)
(; for i in `seq 100`; do; noatun --help > /dev/null; done; )  492.36s user
5.34s system 99% cpu 8:19.17 total
 2007-02-15 15:44:28 +00:00
wiz 09cb1d6f1c s/existance/existence/, from Zafer. 2006-11-24 22:52:16 +00:00
christos aac134252a From defend dot the dot world at gmail dot com: Sanitize environment variables 
for set{u,g}id binaries, so that in case they are playing with set{u,g}id
and exec'ing other binaries they don't get affected by the
LD_{PRELOAD,DEBUG,LIBRARY_PATH} environment setup. We leave LD_BIND_NOW alone.
There are no binaries affected in the base system.
 2006-11-22 21:46:36 +00:00
skrll 6f388cd224 Create _rtld_relocate_plt_object and use it in _rtld_bind and 
_rtld_relocate_plt_objects.

No functional change.
 2006-10-17 08:33:36 +00:00
skrll 152e43d87a Support unaligned DIR32 relocs. 
Closes PR 18293
 2006-10-17 08:28:06 +00:00
skrll edf13fb5fb Reformat a comment. 2006-10-16 13:53:09 +00:00