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go.mod: github.com/opencontainers/runc v1.1.0

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Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
This commit is contained in:
Akihiro Suda
2022-01-18 13:35:22 +09:00
parent dba897c35c
commit 21a748e381
93 changed files with 2416 additions and 2617 deletions
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38
vendor/github.com/cilium/ebpf/link/kprobe.go generated vendored
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@@ -5,7 +5,6 @@ import (
"crypto/rand"
"errors"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"runtime"
@@ -72,10 +71,11 @@ func (pt probeType) RetprobeBit() (uint64, error) {
// given kernel symbol starts executing. See /proc/kallsyms for available
// symbols. For example, printk():
//
// Kprobe("printk", prog)
// kp, err := Kprobe("printk", prog)
//
// The resulting Link must be Closed during program shutdown to avoid leaking
// system resources.
// Losing the reference to the resulting Link (kp) will close the Kprobe
// and prevent further execution of prog. The Link must be Closed during
// program shutdown to avoid leaking system resources.
func Kprobe(symbol string, prog *ebpf.Program) (Link, error) {
k, err := kprobe(symbol, prog, false)
if err != nil {
@@ -95,10 +95,11 @@ func Kprobe(symbol string, prog *ebpf.Program) (Link, error) {
// before the given kernel symbol exits, with the function stack left intact.
// See /proc/kallsyms for available symbols. For example, printk():
//
// Kretprobe("printk", prog)
// kp, err := Kretprobe("printk", prog)
//
// The resulting Link must be Closed during program shutdown to avoid leaking
// system resources.
// Losing the reference to the resulting Link (kp) will close the Kretprobe
// and prevent further execution of prog. The Link must be Closed during
// program shutdown to avoid leaking system resources.
func Kretprobe(symbol string, prog *ebpf.Program) (Link, error) {
k, err := kprobe(symbol, prog, true)
if err != nil {
@@ -157,7 +158,7 @@ func kprobe(symbol string, prog *ebpf.Program, ret bool) (*perfEvent, error) {
// pmuKprobe opens a perf event based on the kprobe PMU.
// Returns os.ErrNotExist if the given symbol does not exist in the kernel.
func pmuKprobe(symbol string, ret bool) (*perfEvent, error) {
return pmuProbe(kprobeType, symbol, "", 0, ret)
return pmuProbe(kprobeType, symbol, "", 0, perfAllThreads, ret)
}
// pmuProbe opens a perf event based on a Performance Monitoring Unit.
@@ -167,7 +168,7 @@ func pmuKprobe(symbol string, ret bool) (*perfEvent, error) {
// 33ea4b24277b "perf/core: Implement the 'perf_uprobe' PMU"
//
// Returns ErrNotSupported if the kernel doesn't support perf_[k,u]probe PMU
func pmuProbe(typ probeType, symbol, path string, offset uint64, ret bool) (*perfEvent, error) {
func pmuProbe(typ probeType, symbol, path string, offset uint64, pid int, ret bool) (*perfEvent, error) {
// Getting the PMU type will fail if the kernel doesn't support
// the perf_[k,u]probe PMU.
et, err := getPMUEventType(typ)
@@ -191,7 +192,7 @@ func pmuProbe(typ probeType, symbol, path string, offset uint64, ret bool) (*per
switch typ {
case kprobeType:
// Create a pointer to a NUL-terminated string for the kernel.
sp, err := unsafeStringPtr(symbol)
sp, err = unsafeStringPtr(symbol)
if err != nil {
return nil, err
}
@@ -202,7 +203,7 @@ func pmuProbe(typ probeType, symbol, path string, offset uint64, ret bool) (*per
Config: config, // Retprobe flag
}
case uprobeType:
sp, err := unsafeStringPtr(path)
sp, err = unsafeStringPtr(path)
if err != nil {
return nil, err
}
@@ -220,7 +221,7 @@ func pmuProbe(typ probeType, symbol, path string, offset uint64, ret bool) (*per
}
}
fd, err := unix.PerfEventOpen(&attr, perfAllThreads, 0, -1, unix.PERF_FLAG_FD_CLOEXEC)
fd, err := unix.PerfEventOpen(&attr, pid, 0, -1, unix.PERF_FLAG_FD_CLOEXEC)
// Since commit 97c753e62e6c, ENOENT is correctly returned instead of EINVAL
// when trying to create a kretprobe for a missing symbol. Make sure ENOENT
@@ -228,6 +229,11 @@ func pmuProbe(typ probeType, symbol, path string, offset uint64, ret bool) (*per
if errors.Is(err, os.ErrNotExist) || errors.Is(err, unix.EINVAL) {
return nil, fmt.Errorf("symbol '%s' not found: %w", symbol, os.ErrNotExist)
}
// Since at least commit cb9a19fe4aa51, ENOTSUPP is returned
// when attempting to set a uprobe on a trap instruction.
if errors.Is(err, unix.ENOTSUPP) {
return nil, fmt.Errorf("failed setting uprobe on offset %#x (possible trap insn): %w", offset, err)
}
if err != nil {
return nil, fmt.Errorf("opening perf event: %w", err)
}
@@ -246,7 +252,7 @@ func pmuProbe(typ probeType, symbol, path string, offset uint64, ret bool) (*per
// tracefsKprobe creates a Kprobe tracefs entry.
func tracefsKprobe(symbol string, ret bool) (*perfEvent, error) {
return tracefsProbe(kprobeType, symbol, "", 0, ret)
return tracefsProbe(kprobeType, symbol, "", 0, perfAllThreads, ret)
}
// tracefsProbe creates a trace event by writing an entry to <tracefs>/[k,u]probe_events.
@@ -255,7 +261,7 @@ func tracefsKprobe(symbol string, ret bool) (*perfEvent, error) {
// Path and offset are only set in the case of uprobe(s) and are used to set
// the executable/library path on the filesystem and the offset where the probe is inserted.
// A perf event is then opened on the newly-created trace event and returned to the caller.
func tracefsProbe(typ probeType, symbol, path string, offset uint64, ret bool) (*perfEvent, error) {
func tracefsProbe(typ probeType, symbol, path string, offset uint64, pid int, ret bool) (*perfEvent, error) {
// Generate a random string for each trace event we attempt to create.
// This value is used as the 'group' token in tracefs to allow creating
// multiple kprobe trace events with the same name.
@@ -288,7 +294,7 @@ func tracefsProbe(typ probeType, symbol, path string, offset uint64, ret bool) (
}
// Kprobes are ephemeral tracepoints and share the same perf event type.
fd, err := openTracepointPerfEvent(tid)
fd, err := openTracepointPerfEvent(tid, pid)
if err != nil {
return nil, err
}
@@ -413,7 +419,7 @@ func probePrefix(ret bool) string {
func determineRetprobeBit(typ probeType) (uint64, error) {
p := filepath.Join("/sys/bus/event_source/devices/", typ.String(), "/format/retprobe")
data, err := ioutil.ReadFile(p)
data, err := os.ReadFile(p)
if err != nil {
return 0, err
}