Work around this particular case by reseeding whenever pid=1, but as guenther@
notes, directly calling clone(2), and then forking to match another pid,
provides other ways to bypass new process detection on Linux.
Hopefully at some point Linux implements something like MAP_INHERIT_ZERO, and
does not invent a corresponding mechanism to subvert it.
Noted by Sebastian Krahmer and the opmsg team.
See http://stealth.openwall.net/crypto/randup.c for a test program.
ok beck@
if the data is needed. Use O_CLOEXEC on the internal fd as MT paranoia.
Fix cast in offset calculation; delete register keyword;
prefer memset() over bzero()
ok millert@
1. Optionally add random "canaries" to the end of an allocation. This
requires increasing the internal size of the allocation slightly, which
probably results in a large effective increase with current power of two
sizing. Therefore, this option is only enabled via 'C'.
2. When writing junk (0xdf) to freed chunks (current default behavior),
check that the junk is still intact when finally freeing the delayed chunk
to catch some potential use after free. This should be pretty cheap so
there's no option to control it separately.
ok deraadt tb
stubs for the executable from crtbegin.o into libc, which lets them be
excluded from static links that don't use them.
For this, drop the normal crt{begin,end}S.o from libc.so: the .init and .fini
sections for libc aren't called at the right times anyway, so it's good that
they're unused. libc.so just needs __guard_local and the .note.openbsd.ident
section, so add them to stack_protector.c for now (this will be improved)
"good time" deraadt@
Wrap __cxa_{atexit,finalize}() so the call from exit() goes direct
Switch regress/lib/libc/atexit/ to be built with -static so that it can
still access __atexit*
ok millert@ jca@
are the errno messages and signal names. Everything else is in
English. We are not planning to translate more text. Running a
mixed system with less than 1% of the text in native language makes
no sense. So remove the NLS support from libc messages. The
catopen(3) functions stay as they are.
OK stsp@ mpi@
into libc, and move pthread_sigmask() as well (just a trivial wrapper).
This provides consistent handling of SIGTHR between single- and multi-threaded
programs and is a step in the merge of all the libpthread overloads, providing
some ASM and Makefile bits that the other wrappers will need.
ok deraadt@ millert@
in asn1 and x509 code, all dealing with an ASN1_TIME. This brings the parsing
together in one function that converts into a struct tm. While we are at it this
also brings us into conformance with RFC 5280 for times allowed in an X509 cert,
as OpenSSL is very liberal with what it allows.
input and fixes from deraadt@ jsing@ guethther@ and others.
ok krw@, guenther@, jsing@
development of a cargo cult in case people look at existing files
for examples. This achieves a consistent .Fo and .Fn quoting style
across the whole tree.