48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (c) 2019 Linux Test Project
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*/
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#ifndef LTP_BPF_COMMON_H
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#define LTP_BPF_COMMON_H
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#define BPF_MEMLOCK_ADD (256*1024)
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void rlimit_bump_memlock(void)
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{
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struct rlimit memlock_r;
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SAFE_GETRLIMIT(RLIMIT_MEMLOCK, &memlock_r);
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memlock_r.rlim_cur += BPF_MEMLOCK_ADD;
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tst_res(TINFO, "Raising RLIMIT_MEMLOCK to %ld",
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(long)memlock_r.rlim_cur);
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if (memlock_r.rlim_cur <= memlock_r.rlim_max) {
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SAFE_SETRLIMIT(RLIMIT_MEMLOCK, &memlock_r);
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} else if ((geteuid() == 0)) {
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memlock_r.rlim_max += BPF_MEMLOCK_ADD;
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SAFE_SETRLIMIT(RLIMIT_MEMLOCK, &memlock_r);
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} else {
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tst_res(TINFO, "Can't raise RLIMIT_MEMLOCK, test may fail "
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"due to lack of max locked memory");
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}
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}
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int bpf_map_create(union bpf_attr *attr)
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{
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TEST(bpf(BPF_MAP_CREATE, attr, sizeof(*attr)));
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if (TST_RET == -1) {
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if (TST_ERR == EPERM) {
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tst_res(TCONF, "Hint: check also /proc/sys/kernel/unprivileged_bpf_disabled");
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tst_brk(TCONF | TTERRNO,
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"bpf() requires CAP_SYS_ADMIN on this system");
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} else {
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tst_brk(TBROK | TTERRNO, "Failed to create array map");
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}
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}
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return TST_RET;
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}
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#endif
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