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authorDaniel J Walsh <dwalsh@redhat.com>2021-06-25 10:02:34 -0400
committerDaniel J Walsh <dwalsh@redhat.com>2021-06-29 15:58:32 -0400
commit05f39af5bd716ce8d02a41e5c0aa1a2d632dab07 (patch)
treee9d2d0c43f3aa65dae28d71950b2824bd091b2be /vendor/github.com/opencontainers/runc/libcontainer/cgroups
parent793063e086d2a7fe15833be5456af95bc9b6ba24 (diff)
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Bump github.com/containers/storage from 1.32.3 to 1.32.5
Bumps [github.com/containers/storage](https://github.com/containers/storage) from 1.32.3 to 1.32.5. - [Release notes](https://github.com/containers/storage/releases) - [Changelog](https://github.com/containers/storage/blob/main/docs/containers-storage-changes.md) - [Commits](https://github.com/containers/storage/compare/v1.32.3...v1.32.5) --- updated-dependencies: - dependency-name: github.com/containers/storage dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Diffstat (limited to 'vendor/github.com/opencontainers/runc/libcontainer/cgroups')
-rw-r--r--vendor/github.com/opencontainers/runc/libcontainer/cgroups/file.go (renamed from vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/open.go)60
-rw-r--r--vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/fscommon.go51
-rw-r--r--vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/utils.go122
-rw-r--r--vendor/github.com/opencontainers/runc/libcontainer/cgroups/utils.go6
4 files changed, 55 insertions, 184 deletions
diff --git a/vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/open.go b/vendor/github.com/opencontainers/runc/libcontainer/cgroups/file.go
index 49af83b3c..5f6ab9fd6 100644
--- a/vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/open.go
+++ b/vendor/github.com/opencontainers/runc/libcontainer/cgroups/file.go
@@ -1,6 +1,7 @@
-package fscommon
+package cgroups
import (
+ "bytes"
"os"
"strings"
"sync"
@@ -10,6 +11,54 @@ import (
"golang.org/x/sys/unix"
)
+// OpenFile opens a cgroup file in a given dir with given flags.
+// It is supposed to be used for cgroup files only.
+func OpenFile(dir, file string, flags int) (*os.File, error) {
+ if dir == "" {
+ return nil, errors.Errorf("no directory specified for %s", file)
+ }
+ return openFile(dir, file, flags)
+}
+
+// ReadFile reads data from a cgroup file in dir.
+// It is supposed to be used for cgroup files only.
+func ReadFile(dir, file string) (string, error) {
+ fd, err := OpenFile(dir, file, unix.O_RDONLY)
+ if err != nil {
+ return "", err
+ }
+ defer fd.Close()
+ var buf bytes.Buffer
+
+ _, err = buf.ReadFrom(fd)
+ return buf.String(), err
+}
+
+// WriteFile writes data to a cgroup file in dir.
+// It is supposed to be used for cgroup files only.
+func WriteFile(dir, file, data string) error {
+ fd, err := OpenFile(dir, file, unix.O_WRONLY)
+ if err != nil {
+ return err
+ }
+ defer fd.Close()
+ if err := retryingWriteFile(fd, data); err != nil {
+ return errors.Wrapf(err, "failed to write %q", data)
+ }
+ return nil
+}
+
+func retryingWriteFile(fd *os.File, data string) error {
+ for {
+ _, err := fd.Write([]byte(data))
+ if errors.Is(err, unix.EINTR) {
+ logrus.Infof("interrupted while writing %s to %s", data, fd.Name())
+ continue
+ }
+ return err
+ }
+}
+
const (
cgroupfsDir = "/sys/fs/cgroup"
cgroupfsPrefix = cgroupfsDir + "/"
@@ -28,7 +77,8 @@ var (
func prepareOpenat2() error {
prepOnce.Do(func() {
fd, err := unix.Openat2(-1, cgroupfsDir, &unix.OpenHow{
- Flags: unix.O_DIRECTORY | unix.O_PATH})
+ Flags: unix.O_DIRECTORY | unix.O_PATH,
+ })
if err != nil {
prepErr = &os.PathError{Op: "openat2", Path: cgroupfsDir, Err: err}
if err != unix.ENOSYS {
@@ -52,7 +102,6 @@ func prepareOpenat2() error {
// cgroupv2 has a single mountpoint and no "cpu,cpuacct" symlinks
resolveFlags |= unix.RESOLVE_NO_XDEV | unix.RESOLVE_NO_SYMLINKS
}
-
})
return prepErr
@@ -60,10 +109,7 @@ func prepareOpenat2() error {
// OpenFile opens a cgroup file in a given dir with given flags.
// It is supposed to be used for cgroup files only.
-func OpenFile(dir, file string, flags int) (*os.File, error) {
- if dir == "" {
- return nil, errors.Errorf("no directory specified for %s", file)
- }
+func openFile(dir, file string, flags int) (*os.File, error) {
mode := os.FileMode(0)
if TestMode && flags&os.O_WRONLY != 0 {
// "emulate" cgroup fs for unit tests
diff --git a/vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/fscommon.go b/vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/fscommon.go
deleted file mode 100644
index ae2613cdb..000000000
--- a/vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/fscommon.go
+++ /dev/null
@@ -1,51 +0,0 @@
-// +build linux
-
-package fscommon
-
-import (
- "bytes"
- "os"
-
- "github.com/pkg/errors"
- "github.com/sirupsen/logrus"
- "golang.org/x/sys/unix"
-)
-
-// WriteFile writes data to a cgroup file in dir.
-// It is supposed to be used for cgroup files only.
-func WriteFile(dir, file, data string) error {
- fd, err := OpenFile(dir, file, unix.O_WRONLY)
- if err != nil {
- return err
- }
- defer fd.Close()
- if err := retryingWriteFile(fd, data); err != nil {
- return errors.Wrapf(err, "failed to write %q", data)
- }
- return nil
-}
-
-// ReadFile reads data from a cgroup file in dir.
-// It is supposed to be used for cgroup files only.
-func ReadFile(dir, file string) (string, error) {
- fd, err := OpenFile(dir, file, unix.O_RDONLY)
- if err != nil {
- return "", err
- }
- defer fd.Close()
- var buf bytes.Buffer
-
- _, err = buf.ReadFrom(fd)
- return buf.String(), err
-}
-
-func retryingWriteFile(fd *os.File, data string) error {
- for {
- _, err := fd.Write([]byte(data))
- if errors.Is(err, unix.EINTR) {
- logrus.Infof("interrupted while writing %s to %s", data, fd.Name())
- continue
- }
- return err
- }
-}
diff --git a/vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/utils.go b/vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/utils.go
deleted file mode 100644
index db0caded1..000000000
--- a/vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/utils.go
+++ /dev/null
@@ -1,122 +0,0 @@
-// +build linux
-
-package fscommon
-
-import (
- "errors"
- "fmt"
- "math"
- "strconv"
- "strings"
-)
-
-var (
- ErrNotValidFormat = errors.New("line is not a valid key value format")
-)
-
-// ParseUint converts a string to an uint64 integer.
-// Negative values are returned at zero as, due to kernel bugs,
-// some of the memory cgroup stats can be negative.
-func ParseUint(s string, base, bitSize int) (uint64, error) {
- value, err := strconv.ParseUint(s, base, bitSize)
- if err != nil {
- intValue, intErr := strconv.ParseInt(s, base, bitSize)
- // 1. Handle negative values greater than MinInt64 (and)
- // 2. Handle negative values lesser than MinInt64
- if intErr == nil && intValue < 0 {
- return 0, nil
- } else if intErr != nil && intErr.(*strconv.NumError).Err == strconv.ErrRange && intValue < 0 {
- return 0, nil
- }
-
- return value, err
- }
-
- return value, nil
-}
-
-// ParseKeyValue parses a space-separated "name value" kind of cgroup
-// parameter and returns its key as a string, and its value as uint64
-// (ParseUint is used to convert the value). For example,
-// "io_service_bytes 1234" will be returned as "io_service_bytes", 1234.
-func ParseKeyValue(t string) (string, uint64, error) {
- parts := strings.SplitN(t, " ", 3)
- if len(parts) != 2 {
- return "", 0, fmt.Errorf("line %q is not in key value format", t)
- }
-
- value, err := ParseUint(parts[1], 10, 64)
- if err != nil {
- return "", 0, fmt.Errorf("unable to convert to uint64: %v", err)
- }
-
- return parts[0], value, nil
-}
-
-// GetValueByKey reads a key-value pairs from the specified cgroup file,
-// and returns a value of the specified key. ParseUint is used for value
-// conversion.
-func GetValueByKey(path, file, key string) (uint64, error) {
- content, err := ReadFile(path, file)
- if err != nil {
- return 0, err
- }
-
- lines := strings.Split(string(content), "\n")
- for _, line := range lines {
- arr := strings.Split(line, " ")
- if len(arr) == 2 && arr[0] == key {
- return ParseUint(arr[1], 10, 64)
- }
- }
-
- return 0, nil
-}
-
-// GetCgroupParamUint reads a single uint64 value from the specified cgroup file.
-// If the value read is "max", the math.MaxUint64 is returned.
-func GetCgroupParamUint(path, file string) (uint64, error) {
- contents, err := GetCgroupParamString(path, file)
- if err != nil {
- return 0, err
- }
- contents = strings.TrimSpace(contents)
- if contents == "max" {
- return math.MaxUint64, nil
- }
-
- res, err := ParseUint(contents, 10, 64)
- if err != nil {
- return res, fmt.Errorf("unable to parse file %q", path+"/"+file)
- }
- return res, nil
-}
-
-// GetCgroupParamInt reads a single int64 value from specified cgroup file.
-// If the value read is "max", the math.MaxInt64 is returned.
-func GetCgroupParamInt(path, file string) (int64, error) {
- contents, err := ReadFile(path, file)
- if err != nil {
- return 0, err
- }
- contents = strings.TrimSpace(contents)
- if contents == "max" {
- return math.MaxInt64, nil
- }
-
- res, err := strconv.ParseInt(contents, 10, 64)
- if err != nil {
- return res, fmt.Errorf("unable to parse %q as a int from Cgroup file %q", contents, path+"/"+file)
- }
- return res, nil
-}
-
-// GetCgroupParamString reads a string from the specified cgroup file.
-func GetCgroupParamString(path, file string) (string, error) {
- contents, err := ReadFile(path, file)
- if err != nil {
- return "", err
- }
-
- return strings.TrimSpace(contents), nil
-}
diff --git a/vendor/github.com/opencontainers/runc/libcontainer/cgroups/utils.go b/vendor/github.com/opencontainers/runc/libcontainer/cgroups/utils.go
index 35ce2c1c2..92606525b 100644
--- a/vendor/github.com/opencontainers/runc/libcontainer/cgroups/utils.go
+++ b/vendor/github.com/opencontainers/runc/libcontainer/cgroups/utils.go
@@ -15,7 +15,6 @@ import (
"sync"
"time"
- "github.com/opencontainers/runc/libcontainer/cgroups/fscommon"
"github.com/opencontainers/runc/libcontainer/userns"
"github.com/sirupsen/logrus"
"golang.org/x/sys/unix"
@@ -88,7 +87,7 @@ func GetAllSubsystems() ([]string, error) {
// - freezer: implemented in kernel 5.2
// We assume these are always available, as it is hard to detect availability.
pseudo := []string{"devices", "freezer"}
- data, err := fscommon.ReadFile("/sys/fs/cgroup", "cgroup.controllers")
+ data, err := ReadFile("/sys/fs/cgroup", "cgroup.controllers")
if err != nil {
return nil, err
}
@@ -267,7 +266,6 @@ func RemovePaths(paths map[string]string) (err error) {
case retries - 1:
logrus.WithError(err).Error("Failed to remove cgroup")
}
-
}
_, err := os.Stat(p)
// We need this strange way of checking cgroups existence because
@@ -376,7 +374,7 @@ func WriteCgroupProc(dir string, pid int) error {
return nil
}
- file, err := fscommon.OpenFile(dir, CgroupProcesses, os.O_WRONLY)
+ file, err := OpenFile(dir, CgroupProcesses, os.O_WRONLY)
if err != nil {
return fmt.Errorf("failed to write %v to %v: %v", pid, CgroupProcesses, err)
}