locally us MAXIMUM() rather than MAX()
ok tb gnezdo

Improve handling of dlopen(RTLD_TRACE) aka ldd, of a library that
is already loaded:
* add a 'trace' argument to _dl_show_objects() and exit the
walk-the-objects loop if you hit that traced object
* in dlopen(), pass the trace object to _dl_show_objects()
* also, invoke _dl_show_objects() + exit if the object was
already opened
* pass NULL to _dl_show_objects() for all the other calls
* oh hey, _dl_tracelib is now superfluous: _dl_show_objects()
should do the walk-the-objects loop only if trace is not NULL.

Problem noted by gnezdo@
ok millert@

Unite all nitems copies in ld.so/util.h

OK deraadt

Prep .c files for removing the #includes from */archdep.h
* replace #include "archdep.h" with #includes of what is used, pulling in
"syscall.h", "util.h", and "archdep.h" as needed
* delete #include <sys/syscall.h> from syscall.h
* only pull in <sys/stat.h> to the three files that use _dl_fstat(),
forward declare struct stat in syscall.h for the others
* NBBY is for <sys/select.h> macros; just use '8' in dl_printf.c
* <machine/vmparam.h> is only needed on i386; conditionalize it
* stop using __LDPGSZ: use _MAX_PAGE_SHIFT (already used by malloc.c)
where necessary
* delete other bogus #includes, order legit per style: <sys/*> then
<*/*>, then <*>, then "*"

dir.c improvement from jsg@
ok and testing assistance deraadt@

ld.so's $ORIGIN handling when argv[0] is a relative path was broken by
the change in __getcwd(2)'s return value. Fix it by switching to the
__realpath(2) syscall, eliminating the ld.so copy of realpath().

problem caught by regress and noted by bluhm@
ok deraadt@

ld.so boot cleanup support:
- put functions and data which are only used before calling the executable's
start function into their own page-aligned segments for unmapping
(only done on amd64, arm64, armv7, powerpc, and sparc64 so far)
- pass .init_array and .preinit_array functions an addition argument which
is a callback to get a structure which includes a function that frees
the boot text and data
- sometimes delay doing RELRO processing: for a shared-object marked
DF_1_INITFIRST do it after the object's .init_array, for the executable
do it after the .preinit_array
- improve test-ld.so to link against libpthread and trigger its initialization
late
libc changes to use this will come later

ok kettenis@

I am retiring my old email address; replace it with my OpenBSD one.

Delay processing of ld.so's own PT_GNU_RELRO section until after environment
processing and malloc initialization, and then move variables set by those
steps, including malloc's mopts structure, into the .data.rel.ro segment.
This protects more data and eliminates the extra padding of the mopts.

ok kettenis@

Redo the calculation of the alignment and placement of static TLS data to
correctly take into account the segment p_align. Previously, anything
with a size belong the natural alignment or with alignment larger than
the natural one would either not be intialized correctly, be misaligned,
or result in the TIB being misaligned.

Problems reported by Charles Collicutt (charles (at) collicutt.co.uk)
ok kettenis@

rename *fdprint function to *dprintf, like libc version

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

Wrap function declarations with __{BEGIN,END}_HIDDEN_DECLS to reduce
relocations inside ld.so that it has to bootstrap

ok kettenis@

Pull in <stddef.h> for NULL
(not stdio, because ld.so has a reduced library behind it)

the slimmed down random functions inside ld.so are strict clones of the
libc arc4random API, so call them _dl_{arc4random,arcrandombuf}
ok tedu guenther

Move to a non-zeroing _dl_malloc, a _dl_calloc and _dl_reallocarry and
fix _dl_strdup to return NULL instead of crash; ok deraadt@

improve some types

make the _dl_isalnum() resemble the ctype version
prodding from kettenis

- Add ORIGIN, OSNAME, OSREL and PLATFORM substitution support for rpaths.
Improvements and okay matthew@, millert@, guenther@

Factor out a _dl_randombuf() method from _dl_random().

make _dl_wrstderr() not call write per-character; ok drahn

readdir buffers should not get a fixed buffer size, but should be dependant
on the block size of the filesystem. Rounded up to page size for efficiency.
similar to change in libc yesterday. Should fix PR 5364.

Fix some problems related to LD_LIBRARY_PATH parsing where it would not
correctly deal with current directory searches specified by "::", ":foo" or
"foo:"

provide one version of _dl_bcopy instead of copy in every arch; drahn@ ok

Better fix to the library name parsing. now correctly handles
libpython2.2.so.0.0 vs libpython2.1.so.0.0. Clean up a potential
memory leak if the filename is not a valid library.
ok brad@

various proto, ansi, and knf repair. tested on all architectures that
use it. (build may require make cleandir because of .depend balony)

no more register

pefo 3/4 licence cleanups

When loading a shared object or libraries dependant object, load them
in random order. This will reduce the possiblity of a buffer overflow
being able to predict the addresss of useful code. Can be disabled
with the LD_NORANDOM environment variable for debugging purposes.
ok deraadt.

argh, include prototype for dl_fdprintf(), missed by myself and reviewers.

use real clones of the libc functions

ok i found it

back out broken stuff until it is fixed

make more _dl_*() func params like real ones in libc

match _dl_ syscall prototypes w/ the real syscalls prototypes, including args and return values; art@ ok

proto _dl_show_objects() in one place

left over __P removals

Change _dl_strcpy() to _dl_strlcpy(), implementation taken from libc.

various KNF

Add the Copyrights from the respective files the code came from. ok deraadt@

cleanup of MD/MI ld.so (elf), most changes by art@ cleanup by me.
tested on alpha sparc64 powerpc.

Improve handling of dlopen(RTLD_TRACE) aka ldd, of a library that
is already loaded:
* add a 'trace' argument to _dl_show_objects() and exit the
walk-the-objects loop if you hit that traced object
* in dlopen(), pass the trace object to _dl_show_objects()
* also, invoke _dl_show_objects() + exit if the object was
already opened
* pass NULL to _dl_show_objects() for all the other calls
* oh hey, _dl_tracelib is now superfluous: _dl_show_objects()
should do the walk-the-objects loop only if trace is not NULL.

Problem noted by gnezdo@
ok millert@

Unite all nitems copies in ld.so/util.h

OK deraadt

Prep .c files for removing the #includes from */archdep.h
* replace #include "archdep.h" with #includes of what is used, pulling in
"syscall.h", "util.h", and "archdep.h" as needed
* delete #include <sys/syscall.h> from syscall.h
* only pull in <sys/stat.h> to the three files that use _dl_fstat(),
forward declare struct stat in syscall.h for the others
* NBBY is for <sys/select.h> macros; just use '8' in dl_printf.c
* <machine/vmparam.h> is only needed on i386; conditionalize it
* stop using __LDPGSZ: use _MAX_PAGE_SHIFT (already used by malloc.c)
where necessary
* delete other bogus #includes, order legit per style: <sys/*> then
<*/*>, then <*>, then "*"

dir.c improvement from jsg@
ok and testing assistance deraadt@

ld.so's $ORIGIN handling when argv[0] is a relative path was broken by
the change in __getcwd(2)'s return value. Fix it by switching to the
__realpath(2) syscall, eliminating the ld.so copy of realpath().

problem caught by regress and noted by bluhm@
ok deraadt@

ld.so boot cleanup support:
- put functions and data which are only used before calling the executable's
start function into their own page-aligned segments for unmapping
(only done on amd64, arm64, armv7, powerpc, and sparc64 so far)
- pass .init_array and .preinit_array functions an addition argument which
is a callback to get a structure which includes a function that frees
the boot text and data
- sometimes delay doing RELRO processing: for a shared-object marked
DF_1_INITFIRST do it after the object's .init_array, for the executable
do it after the .preinit_array
- improve test-ld.so to link against libpthread and trigger its initialization
late
libc changes to use this will come later

ok kettenis@

I am retiring my old email address; replace it with my OpenBSD one.

Delay processing of ld.so's own PT_GNU_RELRO section until after environment
processing and malloc initialization, and then move variables set by those
steps, including malloc's mopts structure, into the .data.rel.ro segment.
This protects more data and eliminates the extra padding of the mopts.

ok kettenis@

Redo the calculation of the alignment and placement of static TLS data to
correctly take into account the segment p_align. Previously, anything
with a size belong the natural alignment or with alignment larger than
the natural one would either not be intialized correctly, be misaligned,
or result in the TIB being misaligned.

Problems reported by Charles Collicutt (charles (at) collicutt.co.uk)
ok kettenis@

rename *fdprint function to *dprintf, like libc version

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

Wrap function declarations with __{BEGIN,END}_HIDDEN_DECLS to reduce
relocations inside ld.so that it has to bootstrap

ok kettenis@

Pull in <stddef.h> for NULL
(not stdio, because ld.so has a reduced library behind it)

the slimmed down random functions inside ld.so are strict clones of the
libc arc4random API, so call them _dl_{arc4random,arcrandombuf}
ok tedu guenther

Move to a non-zeroing _dl_malloc, a _dl_calloc and _dl_reallocarry and
fix _dl_strdup to return NULL instead of crash; ok deraadt@

improve some types

make the _dl_isalnum() resemble the ctype version
prodding from kettenis

- Add ORIGIN, OSNAME, OSREL and PLATFORM substitution support for rpaths.
Improvements and okay matthew@, millert@, guenther@

Factor out a _dl_randombuf() method from _dl_random().

make _dl_wrstderr() not call write per-character; ok drahn

readdir buffers should not get a fixed buffer size, but should be dependant
on the block size of the filesystem. Rounded up to page size for efficiency.
similar to change in libc yesterday. Should fix PR 5364.

Fix some problems related to LD_LIBRARY_PATH parsing where it would not
correctly deal with current directory searches specified by "::", ":foo" or
"foo:"

provide one version of _dl_bcopy instead of copy in every arch; drahn@ ok

Better fix to the library name parsing. now correctly handles
libpython2.2.so.0.0 vs libpython2.1.so.0.0. Clean up a potential
memory leak if the filename is not a valid library.
ok brad@

various proto, ansi, and knf repair. tested on all architectures that
use it. (build may require make cleandir because of .depend balony)

no more register

pefo 3/4 licence cleanups

When loading a shared object or libraries dependant object, load them
in random order. This will reduce the possiblity of a buffer overflow
being able to predict the addresss of useful code. Can be disabled
with the LD_NORANDOM environment variable for debugging purposes.
ok deraadt.

argh, include prototype for dl_fdprintf(), missed by myself and reviewers.

use real clones of the libc functions

ok i found it

back out broken stuff until it is fixed

make more _dl_*() func params like real ones in libc

match _dl_ syscall prototypes w/ the real syscalls prototypes, including args and return values; art@ ok

proto _dl_show_objects() in one place

left over __P removals

Change _dl_strcpy() to _dl_strlcpy(), implementation taken from libc.

various KNF

Add the Copyrights from the respective files the code came from. ok deraadt@

cleanup of MD/MI ld.so (elf), most changes by art@ cleanup by me.
tested on alpha sparc64 powerpc.

Unite all nitems copies in ld.so/util.h

OK deraadt

Prep .c files for removing the #includes from */archdep.h
* replace #include "archdep.h" with #includes of what is used, pulling in
"syscall.h", "util.h", and "archdep.h" as needed
* delete #include <sys/syscall.h> from syscall.h
* only pull in <sys/stat.h> to the three files that use _dl_fstat(),
forward declare struct stat in syscall.h for the others
* NBBY is for <sys/select.h> macros; just use '8' in dl_printf.c
* <machine/vmparam.h> is only needed on i386; conditionalize it
* stop using __LDPGSZ: use _MAX_PAGE_SHIFT (already used by malloc.c)
where necessary
* delete other bogus #includes, order legit per style: <sys/*> then
<*/*>, then <*>, then "*"

dir.c improvement from jsg@
ok and testing assistance deraadt@

ld.so's $ORIGIN handling when argv[0] is a relative path was broken by
the change in __getcwd(2)'s return value. Fix it by switching to the
__realpath(2) syscall, eliminating the ld.so copy of realpath().

problem caught by regress and noted by bluhm@
ok deraadt@

ld.so boot cleanup support:
- put functions and data which are only used before calling the executable's
start function into their own page-aligned segments for unmapping
(only done on amd64, arm64, armv7, powerpc, and sparc64 so far)
- pass .init_array and .preinit_array functions an addition argument which
is a callback to get a structure which includes a function that frees
the boot text and data
- sometimes delay doing RELRO processing: for a shared-object marked
DF_1_INITFIRST do it after the object's .init_array, for the executable
do it after the .preinit_array
- improve test-ld.so to link against libpthread and trigger its initialization
late
libc changes to use this will come later

ok kettenis@

I am retiring my old email address; replace it with my OpenBSD one.

Delay processing of ld.so's own PT_GNU_RELRO section until after environment
processing and malloc initialization, and then move variables set by those
steps, including malloc's mopts structure, into the .data.rel.ro segment.
This protects more data and eliminates the extra padding of the mopts.

ok kettenis@

Redo the calculation of the alignment and placement of static TLS data to
correctly take into account the segment p_align. Previously, anything
with a size belong the natural alignment or with alignment larger than
the natural one would either not be intialized correctly, be misaligned,
or result in the TIB being misaligned.

Problems reported by Charles Collicutt (charles (at) collicutt.co.uk)
ok kettenis@

rename *fdprint function to *dprintf, like libc version

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

Wrap function declarations with __{BEGIN,END}_HIDDEN_DECLS to reduce
relocations inside ld.so that it has to bootstrap

ok kettenis@

Pull in <stddef.h> for NULL
(not stdio, because ld.so has a reduced library behind it)

the slimmed down random functions inside ld.so are strict clones of the
libc arc4random API, so call them _dl_{arc4random,arcrandombuf}
ok tedu guenther

Move to a non-zeroing _dl_malloc, a _dl_calloc and _dl_reallocarry and
fix _dl_strdup to return NULL instead of crash; ok deraadt@

improve some types

make the _dl_isalnum() resemble the ctype version
prodding from kettenis

- Add ORIGIN, OSNAME, OSREL and PLATFORM substitution support for rpaths.
Improvements and okay matthew@, millert@, guenther@

Factor out a _dl_randombuf() method from _dl_random().

make _dl_wrstderr() not call write per-character; ok drahn

readdir buffers should not get a fixed buffer size, but should be dependant
on the block size of the filesystem. Rounded up to page size for efficiency.
similar to change in libc yesterday. Should fix PR 5364.

Fix some problems related to LD_LIBRARY_PATH parsing where it would not
correctly deal with current directory searches specified by "::", ":foo" or
"foo:"

provide one version of _dl_bcopy instead of copy in every arch; drahn@ ok

Better fix to the library name parsing. now correctly handles
libpython2.2.so.0.0 vs libpython2.1.so.0.0. Clean up a potential
memory leak if the filename is not a valid library.
ok brad@

various proto, ansi, and knf repair. tested on all architectures that
use it. (build may require make cleandir because of .depend balony)

no more register

pefo 3/4 licence cleanups

When loading a shared object or libraries dependant object, load them
in random order. This will reduce the possiblity of a buffer overflow
being able to predict the addresss of useful code. Can be disabled
with the LD_NORANDOM environment variable for debugging purposes.
ok deraadt.

argh, include prototype for dl_fdprintf(), missed by myself and reviewers.

use real clones of the libc functions

ok i found it

back out broken stuff until it is fixed

make more _dl_*() func params like real ones in libc

match _dl_ syscall prototypes w/ the real syscalls prototypes, including args and return values; art@ ok

proto _dl_show_objects() in one place

left over __P removals

Change _dl_strcpy() to _dl_strlcpy(), implementation taken from libc.

various KNF

Add the Copyrights from the respective files the code came from. ok deraadt@

cleanup of MD/MI ld.so (elf), most changes by art@ cleanup by me.
tested on alpha sparc64 powerpc.

Prep .c files for removing the #includes from */archdep.h
* replace #include "archdep.h" with #includes of what is used, pulling in
"syscall.h", "util.h", and "archdep.h" as needed
* delete #include <sys/syscall.h> from syscall.h
* only pull in <sys/stat.h> to the three files that use _dl_fstat(),
forward declare struct stat in syscall.h for the others
* NBBY is for <sys/select.h> macros; just use '8' in dl_printf.c
* <machine/vmparam.h> is only needed on i386; conditionalize it
* stop using __LDPGSZ: use _MAX_PAGE_SHIFT (already used by malloc.c)
where necessary
* delete other bogus #includes, order legit per style: <sys/*> then
<*/*>, then <*>, then "*"

dir.c improvement from jsg@
ok and testing assistance deraadt@

ld.so's $ORIGIN handling when argv[0] is a relative path was broken by
the change in __getcwd(2)'s return value. Fix it by switching to the
__realpath(2) syscall, eliminating the ld.so copy of realpath().

problem caught by regress and noted by bluhm@
ok deraadt@

ld.so boot cleanup support:
- put functions and data which are only used before calling the executable's
start function into their own page-aligned segments for unmapping
(only done on amd64, arm64, armv7, powerpc, and sparc64 so far)
- pass .init_array and .preinit_array functions an addition argument which
is a callback to get a structure which includes a function that frees
the boot text and data
- sometimes delay doing RELRO processing: for a shared-object marked
DF_1_INITFIRST do it after the object's .init_array, for the executable
do it after the .preinit_array
- improve test-ld.so to link against libpthread and trigger its initialization
late
libc changes to use this will come later

ok kettenis@

I am retiring my old email address; replace it with my OpenBSD one.

Delay processing of ld.so's own PT_GNU_RELRO section until after environment
processing and malloc initialization, and then move variables set by those
steps, including malloc's mopts structure, into the .data.rel.ro segment.
This protects more data and eliminates the extra padding of the mopts.

ok kettenis@

Redo the calculation of the alignment and placement of static TLS data to
correctly take into account the segment p_align. Previously, anything
with a size belong the natural alignment or with alignment larger than
the natural one would either not be intialized correctly, be misaligned,
or result in the TIB being misaligned.

Problems reported by Charles Collicutt (charles (at) collicutt.co.uk)
ok kettenis@

rename *fdprint function to *dprintf, like libc version

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

Wrap function declarations with __{BEGIN,END}_HIDDEN_DECLS to reduce
relocations inside ld.so that it has to bootstrap

ok kettenis@

Pull in <stddef.h> for NULL
(not stdio, because ld.so has a reduced library behind it)

the slimmed down random functions inside ld.so are strict clones of the
libc arc4random API, so call them _dl_{arc4random,arcrandombuf}
ok tedu guenther

Move to a non-zeroing _dl_malloc, a _dl_calloc and _dl_reallocarry and
fix _dl_strdup to return NULL instead of crash; ok deraadt@

improve some types

make the _dl_isalnum() resemble the ctype version
prodding from kettenis

- Add ORIGIN, OSNAME, OSREL and PLATFORM substitution support for rpaths.
Improvements and okay matthew@, millert@, guenther@

Factor out a _dl_randombuf() method from _dl_random().

make _dl_wrstderr() not call write per-character; ok drahn

readdir buffers should not get a fixed buffer size, but should be dependant
on the block size of the filesystem. Rounded up to page size for efficiency.
similar to change in libc yesterday. Should fix PR 5364.

Fix some problems related to LD_LIBRARY_PATH parsing where it would not
correctly deal with current directory searches specified by "::", ":foo" or
"foo:"

provide one version of _dl_bcopy instead of copy in every arch; drahn@ ok

Better fix to the library name parsing. now correctly handles
libpython2.2.so.0.0 vs libpython2.1.so.0.0. Clean up a potential
memory leak if the filename is not a valid library.
ok brad@

various proto, ansi, and knf repair. tested on all architectures that
use it. (build may require make cleandir because of .depend balony)

no more register

pefo 3/4 licence cleanups

When loading a shared object or libraries dependant object, load them
in random order. This will reduce the possiblity of a buffer overflow
being able to predict the addresss of useful code. Can be disabled
with the LD_NORANDOM environment variable for debugging purposes.
ok deraadt.

argh, include prototype for dl_fdprintf(), missed by myself and reviewers.

use real clones of the libc functions

ok i found it

back out broken stuff until it is fixed

make more _dl_*() func params like real ones in libc

match _dl_ syscall prototypes w/ the real syscalls prototypes, including args and return values; art@ ok

proto _dl_show_objects() in one place

left over __P removals

Change _dl_strcpy() to _dl_strlcpy(), implementation taken from libc.

various KNF

Add the Copyrights from the respective files the code came from. ok deraadt@

cleanup of MD/MI ld.so (elf), most changes by art@ cleanup by me.
tested on alpha sparc64 powerpc.

ld.so's $ORIGIN handling when argv[0] is a relative path was broken by
the change in __getcwd(2)'s return value. Fix it by switching to the
__realpath(2) syscall, eliminating the ld.so copy of realpath().

problem caught by regress and noted by bluhm@
ok deraadt@

ld.so boot cleanup support:
- put functions and data which are only used before calling the executable's
start function into their own page-aligned segments for unmapping
(only done on amd64, arm64, armv7, powerpc, and sparc64 so far)
- pass .init_array and .preinit_array functions an addition argument which
is a callback to get a structure which includes a function that frees
the boot text and data
- sometimes delay doing RELRO processing: for a shared-object marked
DF_1_INITFIRST do it after the object's .init_array, for the executable
do it after the .preinit_array
- improve test-ld.so to link against libpthread and trigger its initialization
late
libc changes to use this will come later

ok kettenis@

I am retiring my old email address; replace it with my OpenBSD one.

Delay processing of ld.so's own PT_GNU_RELRO section until after environment
processing and malloc initialization, and then move variables set by those
steps, including malloc's mopts structure, into the .data.rel.ro segment.
This protects more data and eliminates the extra padding of the mopts.

ok kettenis@

Redo the calculation of the alignment and placement of static TLS data to
correctly take into account the segment p_align. Previously, anything
with a size belong the natural alignment or with alignment larger than
the natural one would either not be intialized correctly, be misaligned,
or result in the TIB being misaligned.

Problems reported by Charles Collicutt (charles (at) collicutt.co.uk)
ok kettenis@

rename *fdprint function to *dprintf, like libc version

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

Wrap function declarations with __{BEGIN,END}_HIDDEN_DECLS to reduce
relocations inside ld.so that it has to bootstrap

ok kettenis@

Pull in <stddef.h> for NULL
(not stdio, because ld.so has a reduced library behind it)

the slimmed down random functions inside ld.so are strict clones of the
libc arc4random API, so call them _dl_{arc4random,arcrandombuf}
ok tedu guenther

Move to a non-zeroing _dl_malloc, a _dl_calloc and _dl_reallocarry and
fix _dl_strdup to return NULL instead of crash; ok deraadt@

improve some types

make the _dl_isalnum() resemble the ctype version
prodding from kettenis

- Add ORIGIN, OSNAME, OSREL and PLATFORM substitution support for rpaths.
Improvements and okay matthew@, millert@, guenther@

Factor out a _dl_randombuf() method from _dl_random().

make _dl_wrstderr() not call write per-character; ok drahn

readdir buffers should not get a fixed buffer size, but should be dependant
on the block size of the filesystem. Rounded up to page size for efficiency.
similar to change in libc yesterday. Should fix PR 5364.

Fix some problems related to LD_LIBRARY_PATH parsing where it would not
correctly deal with current directory searches specified by "::", ":foo" or
"foo:"

provide one version of _dl_bcopy instead of copy in every arch; drahn@ ok

Better fix to the library name parsing. now correctly handles
libpython2.2.so.0.0 vs libpython2.1.so.0.0. Clean up a potential
memory leak if the filename is not a valid library.
ok brad@

various proto, ansi, and knf repair. tested on all architectures that
use it. (build may require make cleandir because of .depend balony)

no more register

pefo 3/4 licence cleanups

When loading a shared object or libraries dependant object, load them
in random order. This will reduce the possiblity of a buffer overflow
being able to predict the addresss of useful code. Can be disabled
with the LD_NORANDOM environment variable for debugging purposes.
ok deraadt.

argh, include prototype for dl_fdprintf(), missed by myself and reviewers.

use real clones of the libc functions

ok i found it

back out broken stuff until it is fixed

make more _dl_*() func params like real ones in libc

match _dl_ syscall prototypes w/ the real syscalls prototypes, including args and return values; art@ ok

proto _dl_show_objects() in one place

left over __P removals

Change _dl_strcpy() to _dl_strlcpy(), implementation taken from libc.

various KNF

Add the Copyrights from the respective files the code came from. ok deraadt@

cleanup of MD/MI ld.so (elf), most changes by art@ cleanup by me.
tested on alpha sparc64 powerpc.

ld.so boot cleanup support:
- put functions and data which are only used before calling the executable's
start function into their own page-aligned segments for unmapping
(only done on amd64, arm64, armv7, powerpc, and sparc64 so far)
- pass .init_array and .preinit_array functions an addition argument which
is a callback to get a structure which includes a function that frees
the boot text and data
- sometimes delay doing RELRO processing: for a shared-object marked
DF_1_INITFIRST do it after the object's .init_array, for the executable
do it after the .preinit_array
- improve test-ld.so to link against libpthread and trigger its initialization
late
libc changes to use this will come later

ok kettenis@

I am retiring my old email address; replace it with my OpenBSD one.

Delay processing of ld.so's own PT_GNU_RELRO section until after environment
processing and malloc initialization, and then move variables set by those
steps, including malloc's mopts structure, into the .data.rel.ro segment.
This protects more data and eliminates the extra padding of the mopts.

ok kettenis@

Redo the calculation of the alignment and placement of static TLS data to
correctly take into account the segment p_align. Previously, anything
with a size belong the natural alignment or with alignment larger than
the natural one would either not be intialized correctly, be misaligned,
or result in the TIB being misaligned.

Problems reported by Charles Collicutt (charles (at) collicutt.co.uk)
ok kettenis@

rename *fdprint function to *dprintf, like libc version

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

Wrap function declarations with __{BEGIN,END}_HIDDEN_DECLS to reduce
relocations inside ld.so that it has to bootstrap

ok kettenis@

Pull in <stddef.h> for NULL
(not stdio, because ld.so has a reduced library behind it)

the slimmed down random functions inside ld.so are strict clones of the
libc arc4random API, so call them _dl_{arc4random,arcrandombuf}
ok tedu guenther

Move to a non-zeroing _dl_malloc, a _dl_calloc and _dl_reallocarry and
fix _dl_strdup to return NULL instead of crash; ok deraadt@

improve some types

make the _dl_isalnum() resemble the ctype version
prodding from kettenis

- Add ORIGIN, OSNAME, OSREL and PLATFORM substitution support for rpaths.
Improvements and okay matthew@, millert@, guenther@

Factor out a _dl_randombuf() method from _dl_random().

make _dl_wrstderr() not call write per-character; ok drahn

readdir buffers should not get a fixed buffer size, but should be dependant
on the block size of the filesystem. Rounded up to page size for efficiency.
similar to change in libc yesterday. Should fix PR 5364.

Fix some problems related to LD_LIBRARY_PATH parsing where it would not
correctly deal with current directory searches specified by "::", ":foo" or
"foo:"

provide one version of _dl_bcopy instead of copy in every arch; drahn@ ok

Better fix to the library name parsing. now correctly handles
libpython2.2.so.0.0 vs libpython2.1.so.0.0. Clean up a potential
memory leak if the filename is not a valid library.
ok brad@

various proto, ansi, and knf repair. tested on all architectures that
use it. (build may require make cleandir because of .depend balony)

no more register

pefo 3/4 licence cleanups

When loading a shared object or libraries dependant object, load them
in random order. This will reduce the possiblity of a buffer overflow
being able to predict the addresss of useful code. Can be disabled
with the LD_NORANDOM environment variable for debugging purposes.
ok deraadt.

argh, include prototype for dl_fdprintf(), missed by myself and reviewers.

use real clones of the libc functions

ok i found it

back out broken stuff until it is fixed

make more _dl_*() func params like real ones in libc

match _dl_ syscall prototypes w/ the real syscalls prototypes, including args and return values; art@ ok

proto _dl_show_objects() in one place

left over __P removals

Change _dl_strcpy() to _dl_strlcpy(), implementation taken from libc.

various KNF

Add the Copyrights from the respective files the code came from. ok deraadt@

cleanup of MD/MI ld.so (elf), most changes by art@ cleanup by me.
tested on alpha sparc64 powerpc.

I am retiring my old email address; replace it with my OpenBSD one.

Delay processing of ld.so's own PT_GNU_RELRO section until after environment
processing and malloc initialization, and then move variables set by those
steps, including malloc's mopts structure, into the .data.rel.ro segment.
This protects more data and eliminates the extra padding of the mopts.

ok kettenis@

Redo the calculation of the alignment and placement of static TLS data to
correctly take into account the segment p_align. Previously, anything
with a size belong the natural alignment or with alignment larger than
the natural one would either not be intialized correctly, be misaligned,
or result in the TIB being misaligned.

Problems reported by Charles Collicutt (charles (at) collicutt.co.uk)
ok kettenis@

rename *fdprint function to *dprintf, like libc version

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

Wrap function declarations with __{BEGIN,END}_HIDDEN_DECLS to reduce
relocations inside ld.so that it has to bootstrap

ok kettenis@

Pull in <stddef.h> for NULL
(not stdio, because ld.so has a reduced library behind it)

the slimmed down random functions inside ld.so are strict clones of the
libc arc4random API, so call them _dl_{arc4random,arcrandombuf}
ok tedu guenther

Move to a non-zeroing _dl_malloc, a _dl_calloc and _dl_reallocarry and
fix _dl_strdup to return NULL instead of crash; ok deraadt@

improve some types

make the _dl_isalnum() resemble the ctype version
prodding from kettenis

- Add ORIGIN, OSNAME, OSREL and PLATFORM substitution support for rpaths.
Improvements and okay matthew@, millert@, guenther@

Factor out a _dl_randombuf() method from _dl_random().

make _dl_wrstderr() not call write per-character; ok drahn

readdir buffers should not get a fixed buffer size, but should be dependant
on the block size of the filesystem. Rounded up to page size for efficiency.
similar to change in libc yesterday. Should fix PR 5364.

Fix some problems related to LD_LIBRARY_PATH parsing where it would not
correctly deal with current directory searches specified by "::", ":foo" or
"foo:"

provide one version of _dl_bcopy instead of copy in every arch; drahn@ ok

Better fix to the library name parsing. now correctly handles
libpython2.2.so.0.0 vs libpython2.1.so.0.0. Clean up a potential
memory leak if the filename is not a valid library.
ok brad@

various proto, ansi, and knf repair. tested on all architectures that
use it. (build may require make cleandir because of .depend balony)

no more register

pefo 3/4 licence cleanups

When loading a shared object or libraries dependant object, load them
in random order. This will reduce the possiblity of a buffer overflow
being able to predict the addresss of useful code. Can be disabled
with the LD_NORANDOM environment variable for debugging purposes.
ok deraadt.

argh, include prototype for dl_fdprintf(), missed by myself and reviewers.

use real clones of the libc functions

ok i found it

back out broken stuff until it is fixed

make more _dl_*() func params like real ones in libc

match _dl_ syscall prototypes w/ the real syscalls prototypes, including args and return values; art@ ok

proto _dl_show_objects() in one place

left over __P removals

Change _dl_strcpy() to _dl_strlcpy(), implementation taken from libc.

various KNF

Add the Copyrights from the respective files the code came from. ok deraadt@

cleanup of MD/MI ld.so (elf), most changes by art@ cleanup by me.
tested on alpha sparc64 powerpc.

Delay processing of ld.so's own PT_GNU_RELRO section until after environment
processing and malloc initialization, and then move variables set by those
steps, including malloc's mopts structure, into the .data.rel.ro segment.
This protects more data and eliminates the extra padding of the mopts.

ok kettenis@

Redo the calculation of the alignment and placement of static TLS data to
correctly take into account the segment p_align. Previously, anything
with a size belong the natural alignment or with alignment larger than
the natural one would either not be intialized correctly, be misaligned,
or result in the TIB being misaligned.

Problems reported by Charles Collicutt (charles (at) collicutt.co.uk)
ok kettenis@

rename *fdprint function to *dprintf, like libc version

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

Wrap function declarations with __{BEGIN,END}_HIDDEN_DECLS to reduce
relocations inside ld.so that it has to bootstrap

ok kettenis@

Pull in <stddef.h> for NULL
(not stdio, because ld.so has a reduced library behind it)

the slimmed down random functions inside ld.so are strict clones of the
libc arc4random API, so call them _dl_{arc4random,arcrandombuf}
ok tedu guenther

Move to a non-zeroing _dl_malloc, a _dl_calloc and _dl_reallocarry and
fix _dl_strdup to return NULL instead of crash; ok deraadt@

improve some types

make the _dl_isalnum() resemble the ctype version
prodding from kettenis

- Add ORIGIN, OSNAME, OSREL and PLATFORM substitution support for rpaths.
Improvements and okay matthew@, millert@, guenther@

Factor out a _dl_randombuf() method from _dl_random().

make _dl_wrstderr() not call write per-character; ok drahn

readdir buffers should not get a fixed buffer size, but should be dependant
on the block size of the filesystem. Rounded up to page size for efficiency.
similar to change in libc yesterday. Should fix PR 5364.

Fix some problems related to LD_LIBRARY_PATH parsing where it would not
correctly deal with current directory searches specified by "::", ":foo" or
"foo:"

provide one version of _dl_bcopy instead of copy in every arch; drahn@ ok

Better fix to the library name parsing. now correctly handles
libpython2.2.so.0.0 vs libpython2.1.so.0.0. Clean up a potential
memory leak if the filename is not a valid library.
ok brad@

various proto, ansi, and knf repair. tested on all architectures that
use it. (build may require make cleandir because of .depend balony)

no more register

pefo 3/4 licence cleanups

When loading a shared object or libraries dependant object, load them
in random order. This will reduce the possiblity of a buffer overflow
being able to predict the addresss of useful code. Can be disabled
with the LD_NORANDOM environment variable for debugging purposes.
ok deraadt.

argh, include prototype for dl_fdprintf(), missed by myself and reviewers.

use real clones of the libc functions

ok i found it

back out broken stuff until it is fixed

make more _dl_*() func params like real ones in libc

match _dl_ syscall prototypes w/ the real syscalls prototypes, including args and return values; art@ ok

proto _dl_show_objects() in one place

left over __P removals

Change _dl_strcpy() to _dl_strlcpy(), implementation taken from libc.

various KNF

Add the Copyrights from the respective files the code came from. ok deraadt@

cleanup of MD/MI ld.so (elf), most changes by art@ cleanup by me.
tested on alpha sparc64 powerpc.

Redo the calculation of the alignment and placement of static TLS data to
correctly take into account the segment p_align. Previously, anything
with a size belong the natural alignment or with alignment larger than
the natural one would either not be intialized correctly, be misaligned,
or result in the TIB being misaligned.

Problems reported by Charles Collicutt (charles (at) collicutt.co.uk)
ok kettenis@

rename *fdprint function to *dprintf, like libc version

On fatal errors, kill ourselves with thrkill(0,9,NULL) instead of
simply exiting, via helper functions _dl_die(), _dl_diedie(), and
_dl_oom().

prompted by a complaint from jsing@
ok jsing@ deraadt@

Wrap function declarations with __{BEGIN,END}_HIDDEN_DECLS to reduce
relocations inside ld.so that it has to bootstrap

ok kettenis@

Pull in <stddef.h> for NULL
(not stdio, because ld.so has a reduced library behind it)

the slimmed down random functions inside ld.so are strict clones of the
libc arc4random API, so call them _dl_{arc4random,arcrandombuf}
ok tedu guenther

Move to a non-zeroing _dl_malloc, a _dl_calloc and _dl_reallocarry and
fix _dl_strdup to return NULL instead of crash; ok deraadt@

improve some types

make the _dl_isalnum() resemble the ctype version
prodding from kettenis

- Add ORIGIN, OSNAME, OSREL and PLATFORM substitution support for rpaths.
Improvements and okay matthew@, millert@, guenther@

Factor out a _dl_randombuf() method from _dl_random().

make _dl_wrstderr() not call write per-character; ok drahn

readdir buffers should not get a fixed buffer size, but should be dependant
on the block size of the filesystem. Rounded up to page size for efficiency.
similar to change in libc yesterday. Should fix PR 5364.

Fix some problems related to LD_LIBRARY_PATH parsing where it would not
correctly deal with current directory searches specified by "::", ":foo" or
"foo:"

provide one version of _dl_bcopy instead of copy in every arch; drahn@ ok

Better fix to the library name parsing. now correctly handles
libpython2.2.so.0.0 vs libpython2.1.so.0.0. Clean up a potential
memory leak if the filename is not a valid library.
ok brad@

various proto, ansi, and knf repair. tested on all architectures that
use it. (build may require make cleandir because of .depend balony)

no more register

pefo 3/4 licence cleanups

When loading a shared object or libraries dependant object, load them
in random order. This will reduce the possiblity of a buffer overflow
being able to predict the addresss of useful code. Can be disabled
with the LD_NORANDOM environment variable for debugging purposes.
ok deraadt.

argh, include prototype for dl_fdprintf(), missed by myself and reviewers.

use real clones of the libc functions

ok i found it

back out broken stuff until it is fixed

make more _dl_*() func params like real ones in libc

match _dl_ syscall prototypes w/ the real syscalls prototypes, including args and return values; art@ ok

proto _dl_show_objects() in one place

left over __P removals

Change _dl_strcpy() to _dl_strlcpy(), implementation taken from libc.

various KNF

Add the Copyrights from the respective files the code came from. ok deraadt@

cleanup of MD/MI ld.so (elf), most changes by art@ cleanup by me.
tested on alpha sparc64 powerpc.