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| author | Matthew Heon <matthew.heon@pm.me> | 2019-01-04 14:15:08 -0500 |
|---|---|---|
| committer | Matthew Heon <matthew.heon@pm.me> | 2019-01-07 09:45:26 -0500 |
| commit | eba89259a5938f047d78b74c5bbbc908f8ff4be8 (patch) | |
| tree | c5507f5c7a248252a819cdfa765e767c9faf531e /libpod/lock/shm_lock_manager_linux.go | |
| parent | a219431a317a2b6d9647ce81b7c845345e51b7da (diff) | |
| download | podman-eba89259a5938f047d78b74c5bbbc908f8ff4be8.tar.gz podman-eba89259a5938f047d78b74c5bbbc908f8ff4be8.tar.bz2 podman-eba89259a5938f047d78b74c5bbbc908f8ff4be8.zip | |
Address lingering review comments from SHM locking PR
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
Diffstat (limited to 'libpod/lock/shm_lock_manager_linux.go')
| -rw-r--r-- | libpod/lock/shm_lock_manager_linux.go | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libpod/lock/shm_lock_manager_linux.go b/libpod/lock/shm_lock_manager_linux.go index 3e8f4f3d2..94dfd7dd7 100644 --- a/libpod/lock/shm_lock_manager_linux.go +++ b/libpod/lock/shm_lock_manager_linux.go @@ -3,7 +3,10 @@ package lock import ( + "syscall" + "github.com/containers/libpod/libpod/lock/shm" + "github.com/pkg/errors" ) // SHMLockManager manages shared memory locks. @@ -60,6 +63,11 @@ func (m *SHMLockManager) RetrieveLock(id uint32) (Locker, error) { lock.lockID = id lock.manager = m + if id >= m.locks.GetMaxLocks() { + return nil, errors.Wrapf(syscall.EINVAL, "lock ID %d is too large - max lock size is %d", + id, m.locks.GetMaxLocks()-1) + } + return lock, nil } |