eb5df869ba
The commands used were (roughly): hack/pin-dependency.sh github.com/opencontainers/runc v1.0.1 hack/lint-dependencies.sh # Follow its recommendations. hack/pin-dependency.sh github.com/cilium/ebpf v0.6.2 hack/pin-dependency.sh github.com/opencontainers/selinux v1.8.2 hack/pin-dependency.sh github.com/sirupsen/logrus v1.8.1 # Recheck. hack/lint-dependencies.sh GO111MODULE=on go mod edit -dropreplace github.com/willf/bitset hack/update-vendor.sh # Recheck. hack/lint-dependencies.sh hack/update-internal-modules.sh # Recheck. hack/lint-dependencies.sh Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
48 lines
1.0 KiB
Go
48 lines
1.0 KiB
Go
// +build linux
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package keys
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import (
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"strconv"
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"strings"
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"github.com/pkg/errors"
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"golang.org/x/sys/unix"
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)
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type KeySerial uint32
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func JoinSessionKeyring(name string) (KeySerial, error) {
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sessKeyID, err := unix.KeyctlJoinSessionKeyring(name)
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if err != nil {
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return 0, errors.Wrap(err, "create session key")
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}
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return KeySerial(sessKeyID), nil
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}
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// ModKeyringPerm modifies permissions on a keyring by reading the current permissions,
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// anding the bits with the given mask (clearing permissions) and setting
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// additional permission bits
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func ModKeyringPerm(ringID KeySerial, mask, setbits uint32) error {
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dest, err := unix.KeyctlString(unix.KEYCTL_DESCRIBE, int(ringID))
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if err != nil {
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return err
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}
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res := strings.Split(dest, ";")
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if len(res) < 5 {
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return errors.New("Destination buffer for key description is too small")
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}
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// parse permissions
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perm64, err := strconv.ParseUint(res[3], 16, 32)
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if err != nil {
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return err
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}
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perm := (uint32(perm64) & mask) | setbits
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return unix.KeyctlSetperm(int(ringID), perm)
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}
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