mirror of
https://github.com/morgan9e/systemd
synced 2026-04-15 00:47:10 +09:00
4e494e6aac
- drop unnecessary SYNTHETIC_ERRNO() when the logger does not propagate error code, - drop unnecessary '%m' in error message when the error code is specified with SYNTHETIC_ERRNO(), - add missing full stop at the end of log message, - use RET_GATHER(), - add missing ", ignoring.", - upeercase the first letter, etc., etc...
36 lines
1.0 KiB
C
36 lines
1.0 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include "bpf-dlopen.h"
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#include "bpf-util.h"
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#include "cgroup-util.h"
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#include "initrd-util.h"
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#include "log.h"
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bool cgroup_bpf_supported(void) {
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static int supported = -1;
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int r;
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if (supported >= 0)
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return supported;
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r = cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER);
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if (r < 0) {
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log_warning_errno(r, "Can't determine whether the unified hierarchy is used: %m");
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return (supported = false);
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}
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if (r == 0) {
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log_info("Not running with unified cgroup hierarchy, disabling cgroup BPF features.");
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return (supported = false);
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}
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r = dlopen_bpf();
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if (r < 0) {
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log_full_errno(in_initrd() ? LOG_DEBUG : LOG_INFO,
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r, "Failed to open libbpf, cgroup BPF features disabled: %m");
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return (supported = false);
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}
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return (supported = true);
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}
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