diff options
| author | Jing Chen <chjing@google.com> | 2020-12-03 19:55:20 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-12-03 19:57:51 -0800 |
| commit | a78cef0ed7ce15583424f5873f0aa6fdad1d5c2f (patch) | |
| tree | c6a09e9fbbbbaea63f68bde1a9ef0a698a7b7ae3 /pkg/sentry/syscalls/linux/sys_sem.go | |
| parent | 9eb77281c4fe1c1f252a0df67ca2c1fee8867b80 (diff) | |
Implement command IPC_INFO for semctl.
PiperOrigin-RevId: 345589628
Diffstat (limited to 'pkg/sentry/syscalls/linux/sys_sem.go')
| -rw-r--r-- | pkg/sentry/syscalls/linux/sys_sem.go | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/pkg/sentry/syscalls/linux/sys_sem.go b/pkg/sentry/syscalls/linux/sys_sem.go index e383a0a87..a1601676f 100644 --- a/pkg/sentry/syscalls/linux/sys_sem.go +++ b/pkg/sentry/syscalls/linux/sys_sem.go @@ -146,8 +146,15 @@ func Semctl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscal v, err := getNCnt(t, id, num) return uintptr(v), nil, err - case linux.IPC_INFO, - linux.SEM_INFO, + case linux.IPC_INFO: + buf := args[3].Pointer() + r := t.IPCNamespace().SemaphoreRegistry() + info := r.IPCInfo() + _, err := info.CopyOut(t, buf) + // TODO(gvisor.dev/issue/137): Return the index of the highest used entry. + return 0, nil, err + + case linux.SEM_INFO, linux.SEM_STAT, linux.SEM_STAT_ANY: |