Christian Brauner b0fa673c8c fs: add file and path permissions helpers ...

[ Upstream commit 02f92b3868a1b34ab98464e76b0e4e060474ba10 ]

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>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-06-21 14:52:58 +02:00

..

preload

bpf: Fix umd memory leak in copy_process()

2021-03-30 14:32:03 +02:00

arraymap.c

bpf: Add map and need_defer parameters to .map_fd_put_ptr()

2024-02-23 08:42:07 +01:00

bpf_inode_storage.c

bpf: Change inode_storage's lookup_elem return value from NULL to -EBADF

2021-03-30 14:31:56 +02:00

bpf_iter.c

bpf: Fix an unitialized value in bpf_iter

2021-03-04 11:37:33 +01:00

bpf_local_storage.c

bpf: Annotate data races in bpf_local_storage

2023-05-30 12:57:48 +01:00

bpf_lru_list.c

bpf: Address KCSAN report on bpf_lru_list

2023-07-27 08:44:38 +02:00

bpf_lru_list.h

bpf: Address KCSAN report on bpf_lru_list

2023-07-27 08:44:38 +02:00

bpf_lsm.c

bpf: Update verification logic for LSM programs

2020-11-06 13:15:21 -08:00

bpf_struct_ops_types.h

bpf: tcp: Support tcp_congestion_ops in bpf

2020-01-09 08:46:18 -08:00

bpf_struct_ops.c

bpf: Handle return value of BPF_PROG_TYPE_STRUCT_OPS prog

2021-10-06 15:55:50 +02:00

btf.c

bpf/btf: Accept function names that contain dots

2023-06-28 10:28:16 +02:00

cgroup.c

bpf: Remove extra lock_sock for TCP_ZEROCOPY_RECEIVE

2023-07-27 08:43:37 +02:00

core.c

bpf: Detect IP == ksym.end as part of BPF program

2023-11-28 16:54:49 +00:00

cpumap.c

bpf: report RCU QS in cpumap kthread

2024-03-26 18:22:04 -04:00

devmap.c

bpf: Fix DEVMAP_HASH overflow check on 32-bit arches

2024-03-26 18:21:52 -04:00

disasm.c

bpf: Introduce BPF nospec instruction for mitigating Spectre v4

2021-08-04 12:46:44 +02:00

disasm.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295

2019-06-05 17:36:38 +02:00

dispatcher.c

bpf: Remove bpf_image tree

2020-03-13 12:49:52 -07:00

hashtab.c

bpf: Fix hashtab overflow check on 32-bit arches

2024-03-26 18:21:52 -04:00

helpers.c

bpf: Mark bpf_spin_{lock,unlock}() helpers with notrace correctly

2024-03-26 18:21:50 -04:00

inode.c

fs: add file and path permissions helpers

2024-06-21 14:52:58 +02:00

local_storage.c

bpf: Fix NULL pointer dereference in bpf_get_local_storage() helper

2021-09-03 10:09:21 +02:00

lpm_trie.c

bpf, lpm: Fix check prefixlen before walking trie

2024-01-25 14:37:43 -08:00

Makefile

bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE

2020-10-29 20:01:46 -07:00

map_in_map.c

bpf: Defer the free of inner map when necessary

2024-03-26 18:21:45 -04:00

map_in_map.h

bpf: Add map and need_defer parameters to .map_fd_put_ptr()

2024-02-23 08:42:07 +01:00

map_iter.c

bpf: Implement link_query callbacks in map element iterators

2020-08-21 14:01:39 -07:00

net_namespace.c

bpf: Add support for forced LINK_DETACH command

2020-08-01 20:38:28 -07:00

offload.c

bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill

2020-02-17 16:53:49 +01:00

percpu_freelist.c

bpf: Initialize same number of free nodes for each pcpu_freelist

2022-11-25 17:45:45 +01:00

percpu_freelist.h

bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI

2020-10-06 00:04:11 +02:00

prog_iter.c

bpf: Refactor bpf_iter_reg to have separate seq_info member

2020-07-25 20:16:32 -07:00

queue_stack_maps.c

bpf: Avoid deadlock when using queue and stack maps from NMI

2023-10-10 21:53:26 +02:00

reuseport_array.c

bpf, net: Rework cookie generator as per-cpu one

2020-09-30 11:50:35 -07:00

ringbuf.c

bpf: Use VM_MAP instead of VM_ALLOC for ringbuf

2022-02-08 18:30:39 +01:00

stackmap.c

bpf: Fix stackmap overflow check on 32-bit arches

2024-03-26 18:21:52 -04:00

syscall.c

bpf: In bpf_task_fd_query use fget_task

2024-06-21 14:52:47 +02:00

sysfs_btf.c

bpf: Fix sysfs export of empty BTF section

2020-09-21 21:50:24 +02:00

task_iter.c

file: Replace fcheck_files with files_lookup_fd_rcu

2024-06-21 14:52:48 +02:00

tnum.c

bpf: Verifier, do explicit ALU32 bounds tracking

2020-03-30 14:59:53 -07:00

trampoline.c

bpf: Fix potential array overflow in bpf_trampoline_get_progs()

2022-06-06 08:42:45 +02:00

verifier.c

bpf: Allow delete from sockmap/sockhash only if update is allowed

2024-06-16 13:32:29 +02:00