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02f92b3868a1b34ab98464e76b0e4e060474ba10
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Christian Brauner 02f92b3868 fs: add file and path permissions helpers 
Add two simple helpers to check permissions on a file and path
respectively and convert over some callers. It simplifies quite a few
codepaths and also reduces the churn in later patches quite a bit.
Christoph also correctly points out that this makes codepaths (e.g.
ioctls) way easier to follow that would otherwise have to do more
complex argument passing than necessary.

Link: https://lore.kernel.org/r/20210121131959.646623-4-christian.brauner@ubuntu.com
Cc: David Howells <dhowells@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
2021-01-24 14:27:16 +01:00
..
bpf
fs: add file and path permissions helpers
2021-01-24 14:27:16 +01:00
cgroup
Merge branch 'for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2020-12-28 11:16:38 -08:00
configs
staging: ION: remove some references to CONFIG_ION
2021-01-06 17:39:38 +01:00
debug
smp: Cleanup smp_call_function*()
2020-11-24 16:47:49 +01:00
dma
Merge tag 'dma-mapping-5.11' of git://git.infradead.org/users/hch/dma-mapping
2020-12-22 13:19:43 -08:00
entry
Merge tag 'core-mm-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-12-14 18:35:53 -08:00
events
Merge branch 'exec-update-lock-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2020-12-15 19:36:48 -08:00
gcov
gcov: fix kernel-doc markup issue
2020-12-15 22:46:18 -08:00
irq
genirq: Fix export of irq_to_desc() for powerpc KVM
2020-12-25 11:02:39 -08:00
kcsan
kcsan: Fix encoding masks and regain address bit
2020-11-06 17:19:26 -08:00
livepatch
livepatch: Use the default ftrace_ops instead of REGS when ARGS is available
2020-11-13 12:15:28 -05:00
locking
Merge tag 'locking-core-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-12-14 17:27:47 -08:00
power
Merge tag 'pm-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2020-12-15 16:30:31 -08:00
printk
Merge tag 'printk-for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
2020-12-16 10:45:11 -08:00
rcu
Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
2021-01-04 10:55:19 -08:00
sched
Merge tag 'sched-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-12-27 09:00:47 -08:00
time
Merge tag 'timers-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-12-27 09:03:41 -08:00
trace
tracing/kprobes: Do the notrace functions check without kprobes on ftrace
2021-01-11 16:09:53 -05:00
.gitignore
…
acct.c
kernel/acct.c: use #elif instead of #end and #elif
2020-12-15 22:46:15 -08:00
async.c
treewide: Remove uninitialized_var() usage
2020-07-16 12:35:15 -07:00
audit_fsnotify.c
fsnotify: generalize handle_inode_event()
2020-12-03 14:58:35 +01:00
audit_tree.c
fsnotify: generalize handle_inode_event()
2020-12-03 14:58:35 +01:00
audit_watch.c
fsnotify: generalize handle_inode_event()
2020-12-03 14:58:35 +01:00
audit.c
audit: replace atomic_add_return()
2020-12-02 22:52:16 -05:00
audit.h
audit: change unnecessary globals into statics
2020-08-17 20:26:58 -04:00
auditfilter.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
auditsc.c
Merge tag 'audit-pr-20201214' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
2020-12-16 10:54:03 -08:00
backtracetest.c
treewide: Replace DECLARE_TASKLET() with DECLARE_TASKLET_OLD()
2020-07-30 11:15:58 -07:00
bounds.c
…
capability.c
LSM: Signal to SafeSetID when setting group IDs
2020-10-13 09:17:34 -07:00
compat.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
configs.c
…
context_tracking.c
…
cpu_pm.c
notifier: Fix broken error handling pattern
2020-09-01 09:58:03 +02:00
cpu.c
Merge tag 'sched-core-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-12-14 18:29:11 -08:00
crash_core.c
kdump: append uts_namespace.name offset to VMCOREINFO
2020-12-15 22:46:18 -08:00
crash_dump.c
…
cred.c
…
delayacct.c
…
dma.c
…
exec_domain.c
…
exit.c
kernel/io_uring: cancel io_uring before task works
2020-12-30 19:36:54 -07:00
extable.c
…
fail_function.c
fault-injection: handle EI_ETYPE_TRUE
2020-12-15 22:46:19 -08:00
fork.c
kasan: rename (un)poison_shadow to (un)poison_range
2020-12-22 12:55:06 -08:00
freezer.c
…
futex.c
Merge branch 'locking/rwsem'
2020-12-09 17:08:45 +01:00
gen_kheaders.sh
…
groups.c
LSM: Signal to SafeSetID when setting group IDs
2020-10-13 09:17:34 -07:00
hung_task.c
kernel/hung_task.c: make type annotations consistent
2020-11-02 12:14:19 -08:00
iomem.c
…
irq_work.c
irq_work: Optimize irq_work_single()
2020-11-24 16:47:49 +01:00
jump_label.c
jump_label: Fix usage in module __init
2020-12-18 16:53:12 +01:00
kallsyms.c
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
kcmp.c
Merge branch 'exec-update-lock-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2020-12-15 19:36:48 -08:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
…
Kconfig.preempt
…
kcov.c
kernel: make kcov_common_handle consider the current context
2020-11-02 18:00:20 -08:00
kexec_core.c
crypto: sha - split sha.h into sha1.h and sha2.h
2020-11-20 14:45:33 +11:00
kexec_elf.c
…
kexec_file.c
crypto: sha - split sha.h into sha1.h and sha2.h
2020-11-20 14:45:33 +11:00
kexec_internal.h
…
kexec.c
LSM: Introduce kernel_post_load_data() hook
2020-10-05 13:37:03 +02:00
kheaders.c
…
kmod.c
kmod: remove redundant "be an" in the comment
2020-08-12 10:58:01 -07:00
kprobes.c
Merge branch 'linus' into perf/kprobes
2020-11-07 13:18:49 +01:00
ksysfs.c
…
kthread.c
Merge branch 'akpm' (patches from Andrew)
2020-12-15 12:53:37 -08:00
latencytop.c
…
Makefile
kcov: don't instrument with UBSAN
2020-12-15 22:46:19 -08:00
module_signature.c
…
module_signing.c
…
module-internal.h
…
module.c
Merge tag 'modules-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
2020-12-17 13:01:31 -08:00
notifier.c
notifier: Fix broken error handling pattern
2020-09-01 09:58:03 +02:00
nsproxy.c
Merge tag 'fixes-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
2020-12-14 16:40:27 -08:00
padata.c
padata: fix possible padata_works_lock deadlock
2020-09-04 17:51:55 +10:00
panic.c
panic: don't dump stack twice on warn
2020-11-14 11:26:04 -08:00
params.c
Merge tag 'modules-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
2020-12-17 13:01:31 -08:00
pid_namespace.c
Merge tag 'fixes-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
2020-12-14 16:40:27 -08:00
pid.c
Merge branch 'exec-update-lock-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2020-12-15 19:36:48 -08:00
profile.c
…
ptrace.c
Merge branch 'akpm' (patches from Andrew)
2020-12-15 12:53:37 -08:00
range.c
kernel.h: split out min()/max() et al. helpers
2020-10-16 11:11:19 -07:00
reboot.c
reboot: hide from sysfs not applicable settings
2020-12-15 22:46:19 -08:00
regset.c
regset: kill ->get()
2020-07-27 14:31:12 -04:00
relay.c
relay: allow the use of const callback structs
2020-12-15 22:46:18 -08:00
resource_kunit.c
resource: provide meaningful MODULE_LICENSE() in test suite
2020-11-25 18:52:35 +01:00
resource.c
kernel/resource.c: fix kernel-doc markups
2020-12-15 22:46:18 -08:00
rseq.c
…
scftorture.c
scftorture: Add full-test stutter capability
2020-11-06 17:13:56 -08:00
scs.c
scs: switch to vmapped shadow stacks
2020-12-01 10:30:28 +00:00
seccomp.c
Merge tag 'seccomp-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
2020-12-16 11:30:10 -08:00
signal.c
Merge tag 'tif-task_work.arch-2020-12-14' of git://git.kernel.dk/linux-block
2020-12-16 12:33:35 -08:00
smp.c
Merge branch 'linus' into sched/core, to resolve semantic conflict
2020-11-27 11:10:50 +01:00
smpboot.c
…
smpboot.h
…
softirq.c
Merge tag 'locking-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-12-27 09:06:10 -08:00
stackleak.c
stackleak: let stack_erasing_sysctl take a kernel pointer buffer
2020-09-19 13:13:39 -07:00
stacktrace.c
stacktrace: Remove reliable argument from arch_stack_walk() callback
2020-09-18 14:24:16 +01:00
static_call.c
static_call: Fix return type of static_call_init
2020-10-02 21:18:25 +02:00
stop_machine.c
Merge branch 'linus' into sched/core, to resolve semantic conflict
2020-11-27 11:10:50 +01:00
sys_ni.c
epoll: wire up syscall epoll_pwait2
2020-12-19 11:18:38 -08:00
sys.c
fs: add file and path permissions helpers
2021-01-24 14:27:16 +01:00
sysctl-test.c
…
sysctl.c
rcu: Panic after fixed number of stalls
2020-11-19 19:37:16 -08:00
task_work.c
task_work: remove legacy TWA_SIGNAL path
2020-12-12 09:17:38 -07:00
taskstats.c
treewide: rename nla_strlcpy to nla_strscpy.
2020-11-16 08:08:54 -08:00
test_kprobes.c
…
torture.c
rcutorture: Make stutter_wait() caller restore priority
2020-11-06 17:13:54 -08:00
tracepoint.c
tracepoints: Migrate to use SYSCALL_WORK flag
2020-11-16 21:53:15 +01:00
tsacct.c
…
ucount.c
…
uid16.c
…
uid16.h
…
umh.c
usermodehelper: reset umask to default before executing user process
2020-10-06 10:31:52 -07:00
up.c
…
user_namespace.c
Merge tag 'fixes-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
2020-12-14 16:40:27 -08:00
user-return-notifier.c
…
user.c
user: Use generic ns_common::count
2020-08-19 14:14:12 +02:00
usermode_driver.c
umd: Stop using split_argv
2020-07-07 11:58:59 -05:00
utsname_sysctl.c
…
utsname.c
uts: Use generic ns_common::count
2020-08-19 14:13:20 +02:00
watch_queue.c
watch_queue: Limit the number of watches a user can hold
2020-08-17 09:39:18 -07:00
watchdog_hld.c
…
watchdog.c
kernel/watchdog: fix watchdog_allowed_mask not used warning
2020-11-14 11:26:03 -08:00
workqueue_internal.h
…
workqueue.c
Merge branch 'for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
2020-12-28 11:23:02 -08:00