mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
cbf9f849a3
This patch test the following failures in syscall update_elem 1. The first update_elem(BPF_F_LOCK) should be EOPNOTSUPP. syscall.c takes care of unpinning the uptr. 2. The second update_elem(BPF_EXIST) fails. syscall.c takes care of unpinning the uptr. 3. The forth update_elem(BPF_NOEXIST) fails. bpf_local_storage_update takes care of unpinning the uptr. Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Link: https://lore.kernel.org/r/20241023234759.860539-11-martin.lau@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
42 lines
870 B
C
42 lines
870 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */
|
|
|
|
#include <vmlinux.h>
|
|
#include <bpf/bpf_helpers.h>
|
|
#include "uptr_test_common.h"
|
|
|
|
struct {
|
|
__uint(type, BPF_MAP_TYPE_TASK_STORAGE);
|
|
__uint(map_flags, BPF_F_NO_PREALLOC);
|
|
__type(key, int);
|
|
__type(value, struct value_lock_type);
|
|
} datamap SEC(".maps");
|
|
|
|
/* load test only. not used */
|
|
SEC("syscall")
|
|
int not_used(void *ctx)
|
|
{
|
|
struct value_lock_type *ptr;
|
|
struct task_struct *task;
|
|
struct user_data *udata;
|
|
|
|
task = bpf_get_current_task_btf();
|
|
ptr = bpf_task_storage_get(&datamap, task, 0, 0);
|
|
if (!ptr)
|
|
return 0;
|
|
|
|
bpf_spin_lock(&ptr->lock);
|
|
|
|
udata = ptr->udata;
|
|
if (!udata) {
|
|
bpf_spin_unlock(&ptr->lock);
|
|
return 0;
|
|
}
|
|
udata->result = MAGIC_VALUE + udata->a + udata->b;
|
|
|
|
bpf_spin_unlock(&ptr->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
char _license[] SEC("license") = "GPL";
|