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Subject[git pull] vfs.git openat2 series
	openat2() series; I'm afraid that the rest of namei stuff will
have to wait - it got zero review the last time I'd posted #work.namei,
and there had been a leak in the posted series I'd caught only last
weekend. I was going to repost it on Monday, but the window opened
and the odds of getting any review during that... Oh, well...

Anyway, openat2 part should be ready; that _did_ get sane amount
of review and public testing, so here it comes.

The following changes since commit e42617b825f8073569da76dc4510bfa019b1c35a:

Linux 5.5-rc1 (2019-12-08 14:57:55 -0800)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.openat2

for you to fetch changes up to b55eef872a96738ea9cb35774db5ce9a7d3a648f:

Documentation: path-lookup: include new LOOKUP flags (2020-01-18 09:19:28 -0500)

----------------------------------------------------------------
Aleksa Sarai (13):
namei: only return -ECHILD from follow_dotdot_rcu()
nsfs: clean-up ns_get_path() signature to return int
namei: allow nd_jump_link() to produce errors
namei: allow set_root() to produce errors
namei: LOOKUP_NO_SYMLINKS: block symlink resolution
namei: LOOKUP_NO_MAGICLINKS: block magic-link resolution
namei: LOOKUP_NO_XDEV: block mountpoint crossing
namei: LOOKUP_BENEATH: O_BENEATH-like scoped resolution
namei: LOOKUP_IN_ROOT: chroot-like scoped resolution
namei: LOOKUP_{IN_ROOT,BENEATH}: permit limited ".." resolution
open: introduce openat2(2) syscall
selftests: add openat2(2) selftests
Documentation: path-lookup: include new LOOKUP flags

CREDITS | 4 +-
Documentation/filesystems/path-lookup.rst | 68 ++-
MAINTAINERS | 1 +
arch/alpha/kernel/syscalls/syscall.tbl | 1 +
arch/arm/tools/syscall.tbl | 1 +
arch/arm64/include/asm/unistd.h | 2 +-
arch/arm64/include/asm/unistd32.h | 2 +
arch/ia64/kernel/syscalls/syscall.tbl | 1 +
arch/m68k/kernel/syscalls/syscall.tbl | 1 +
arch/microblaze/kernel/syscalls/syscall.tbl | 1 +
arch/mips/kernel/syscalls/syscall_n32.tbl | 1 +
arch/mips/kernel/syscalls/syscall_n64.tbl | 1 +
arch/mips/kernel/syscalls/syscall_o32.tbl | 1 +
arch/parisc/kernel/syscalls/syscall.tbl | 1 +
arch/powerpc/kernel/syscalls/syscall.tbl | 1 +
arch/s390/kernel/syscalls/syscall.tbl | 1 +
arch/sh/kernel/syscalls/syscall.tbl | 1 +
arch/sparc/kernel/syscalls/syscall.tbl | 1 +
arch/x86/entry/syscalls/syscall_32.tbl | 1 +
arch/x86/entry/syscalls/syscall_64.tbl | 1 +
arch/xtensa/kernel/syscalls/syscall.tbl | 1 +
fs/namei.c | 199 ++++++--
fs/nsfs.c | 29 +-
fs/open.c | 147 ++++--
fs/proc/base.c | 3 +-
fs/proc/namespaces.c | 20 +-
include/linux/fcntl.h | 16 +-
include/linux/namei.h | 12 +-
include/linux/proc_ns.h | 4 +-
include/linux/syscalls.h | 3 +
include/uapi/asm-generic/unistd.h | 5 +-
include/uapi/linux/fcntl.h | 2 +-
include/uapi/linux/openat2.h | 39 ++
kernel/bpf/offload.c | 12 +-
kernel/events/core.c | 2 +-
security/apparmor/apparmorfs.c | 6 +-
tools/testing/selftests/Makefile | 1 +
tools/testing/selftests/openat2/.gitignore | 1 +
tools/testing/selftests/openat2/Makefile | 8 +
tools/testing/selftests/openat2/helpers.c | 109 +++++
tools/testing/selftests/openat2/helpers.h | 106 +++++
tools/testing/selftests/openat2/openat2_test.c | 312 ++++++++++++
.../testing/selftests/openat2/rename_attack_test.c | 160 +++++++
tools/testing/selftests/openat2/resolve_test.c | 523 +++++++++++++++++++++
44 files changed, 1696 insertions(+), 116 deletions(-)
create mode 100644 include/uapi/linux/openat2.h
create mode 100644 tools/testing/selftests/openat2/.gitignore
create mode 100644 tools/testing/selftests/openat2/Makefile
create mode 100644 tools/testing/selftests/openat2/helpers.c
create mode 100644 tools/testing/selftests/openat2/helpers.h
create mode 100644 tools/testing/selftests/openat2/openat2_test.c
create mode 100644 tools/testing/selftests/openat2/rename_attack_test.c
create mode 100644 tools/testing/selftests/openat2/resolve_test.c

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