wehub-resource-sync
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48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/*
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* Copyright © 2025-2026 Apple Inc. and the Containerization project authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#if defined(__linux__)
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#include <sys/prctl.h>
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#include "prctl.h"
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// Set keep caps to preserve capabilities across setuid()
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int CZ_prctl_set_keepcaps() {
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return prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0);
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}
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// Clear keep caps after user change
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int CZ_prctl_clear_keepcaps() {
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return prctl(PR_SET_KEEPCAPS, 0, 0, 0, 0);
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}
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// Drop capability from bounding set
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int CZ_prctl_capbset_drop(unsigned int capability) {
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return prctl(PR_CAPBSET_DROP, capability, 0, 0, 0);
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}
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// Clear all ambient capabilities
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int CZ_prctl_cap_ambient_clear_all() {
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return prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0, 0, 0);
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}
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// Raise ambient capability
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int CZ_prctl_cap_ambient_raise(unsigned int capability) {
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return prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, capability, 0, 0);
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}
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#endif
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