set_ptracer_any: add a little documentation

This way I don't have to keep reading up on these options and wondering
why the code isn't aborting when the call fails.

* tests/set_ptracer_any.c (main): Note prctl failures are ok.
tests: fix shell errors in detach tests

The current detach test code does:
	set -e
	...
	cleanup() {
		set +e
		kill ...
		wait ...
	}
	...
	cleanup
	exit 0

The problem is that while `set -e` is disabled for the body of the
cleanup function, it isn't necessarily disabled in the caller scope.
So if the return value of the cleanup function (`wait` in this case)
is non-zero, the script ends up failing overall.

Add an explicit return 0 to the cleanup function so that we don't kill
the overall test pipeline.

* tests/detach-running.test (cleanup): Add return 0.
* tests/detach-sleeping.test (cleanup): Likewise.
* tests/detach-stopped.test (cleanup): Likewise.
tests: ignore *.tmp files

The tests like to generate random .tmp files, so ignore them.

* tests/.gitignore: Add *.tmp.
tests: fix uio building w/out preadv/pwritev

The preadv/pwritev symbols weren't added to glibc until the 2.10 release,
so trying to build the uio test leads to link failures.  Add configure
tests and update uio.test to handle this.

* configure.ac (AC_CHECK_FUNCS): Add preadv/pwritev.
* tests/uio.c: Include config.h.
(main): Check for HAVE_PREADV and HAVE_PWRITEV.
* tests/uio.test: Check exit status of uio helper.
sh: fix syscall numbering for recv and sendto

* linux/sh/syscallent.h: Swap recv and sendto syscall entries.
tests: skip detach-stopped.test when PTRACE_SEIZE doesn't work

detach-stopped.test is known to fail when PTRACE_SEIZE is not available,
so skip the test in that case.

* tests/detach-stopped.test: Check for "strace -d" output and skip the
test when it says that PTRACE_SEIZE doesn't work.
ia64: fix sigaction decoding

Looks like ia64 doesn't have sa_restorer either, yet still defines
SA_RESTORER.  Deploy the same trick that HPPA is using to make the
test pass.

* signal.c (SA_RESTORER): Undefine when IA64 is defined.
(struct new_sigaction) [IA64]: Disable sa_restorer.
ia64: add missing syscalls

When the preadv/pwritev syscalls were added, the ones before it in the
ia64 list were missed, so all the syscalls there and later were not in
the right location (causing things to be decoded incorrectly).

Add the missing syscalls before preadv which also re-aligns all the
syscalls after that point.  This fixes the uio.test.

* linux/ia64/syscallent.h: Add syscalls 1310 through 1318.
CREDITS: fix generation in out of tree builds

The {...} code changes the working dir with `cd`, but the commands outside
of that block expects to be in the original dir.  Change to a subshell so
the path outside of this block remains unchanged.

* Makefile.am ($(srcdir)/CREDITS): Change {...} to (...).
renameat2: add decoding support

* file.c (decode_renameat, sys_renameat2): New functions.
(sys_renameat): Use decode_renameat.
* pathtrace.c (pathtrace_match): Handle sys_renameat2.
* linux/syscall.h (sys_renameat2): New prototype.
* xlat/rename_flags.in: New file.
Update syscall tables to the point where they include renameat2

* linux/dummy.h: Add printargs aliases for sys_sched_getattr and
sys_sched_setattr.
* linux/aarch64/syscallent1.h: Add kcmp/finit_module/sched_setattr/
sched_getattr/renameat2.
* linux/alpha/syscallent.h: Add kcmp/finit_module.
* linux/arm/syscallent.h: Add sched_setattr/sched_getattr/renameat2.
* linux/hppa/syscallent.h: Add sched_setattr/sched_getattr/utimes/renameat2.
* linux/i386/syscallent.h: Add sched_setattr/sched_getattr/renameat2.
* linux/ia64/syscallent.h: Likewise.
* linux/m68k/syscallent.h: Likewise.
* linux/microblaze/syscallent.h: Likewise.
* linux/mips/syscallent-n32.h: Likewise.
* linux/mips/syscallent-n64.h: Add getdents64/sched_setattr/sched_getattr/
renameat2.
* linux/mips/syscallent-o32.h: Add sched_setattr/sched_getattr/renameat2.
* linux/powerpc/syscallent.h: Fix finit_module/kcmp order.  Add sched_setattr/
sched_getattr/renameat2.
* linux/s390/syscallent.h: Add sched_setattr/sched_getattr/renameat2.
* linux/s390x/syscallent.h: Likewise.
* linux/sparc/syscallent.h: Likewise.
* linux/x32/syscallent.h: Likewise.
* linux/x86_64/syscallent.h: Likewise.
* linux/xtensa/syscallent.h: Add sched_setattr/sched_getattr.
NEWS: Update for 4.9 release
Sync strace.spec and debian/ with packages

* debian/changelog: Sync with 4.8-1.1.
* debian/control: Likewise.
* debian/rules: Likewise.
* strace.spec: Sync with 4.8-5.
Prepare for 4.9 release

* NEWS: Update for 4.9 release.
* debian/changelog: 4.9-1.
* strace.spec: 4.9-1.
maint: post-release administrivia

* NEWS: Add header line for next release.
Use external libaio.h

Stop using an outdated partial copy of libaio.h, switch back to external
libaio.h from libaio.
This partially reverts commit 2df03c494eb3c36c4178eba35c374831031d1a58.

* aio.c: Drop a partial copy of libaio.h, include <libaio.h> instead.
(print_common_flags): Check for HAVE_STRUCT_IOCB_U_C_FLAGS.
(sys_io_submit): Check for HAVE_DECL_IO_CMD_PWRITE and
HAVE_DECL_IO_CMD_PWRITEV.
* configure.ac: Check for libaio.h and declaration it provides.
decode_select: fix potential use of an uninitialized variable

A pointer to fd_set was used uninitialized when nfds == 0.

* desc.c (decode_select): Initialize fds.

Reported-by: Zubin Mithra <zubin.mithra@gmail.com>
printsock: fix decoding of unrecognized AF_PACKET packet types

* net.c (printsock): Fix fallback string for AF_PACKET packet types.
tprint_sock_type: remove unused parameter

* net.c (tprint_sock_type): Remove unused parameter 'tcp'.
(sys_socket, sys_socketpair): Update callers.
getdents, getdents64: fix potential out-of-bounds read issues

* file.c (sys_getdents): Check for invalid d_reclen.
Avoid reading from uninitialized memory.
(sys_getdents64): Likewise.
* tests/getdents.awk: New file.
* tests/getdents.test: New test.
* tests/Makefile.am (TESTS): Add it.
(EXTRA_DIST): Add getdents.awk.