diff options
Diffstat (limited to 'pkg/sentry')
| -rw-r--r-- | pkg/sentry/syscalls/linux/linux64.go | 4 | ||||
| -rw-r--r-- | pkg/sentry/syscalls/linux/sys_msgqueue.go | 53 |
2 files changed, 54 insertions, 3 deletions
diff --git a/pkg/sentry/syscalls/linux/linux64.go b/pkg/sentry/syscalls/linux/linux64.go index 1ead3c7e8..a416dfb7d 100644 --- a/pkg/sentry/syscalls/linux/linux64.go +++ b/pkg/sentry/syscalls/linux/linux64.go @@ -124,7 +124,7 @@ var AMD64 = &kernel.SyscallTable{ 68: syscalls.Supported("msgget", Msgget), 69: syscalls.Supported("msgsnd", Msgsnd), 70: syscalls.Supported("msgrcv", Msgrcv), - 71: syscalls.PartiallySupported("msgctl", Msgctl, "Only supports IPC_RMID option.", []string{"gvisor.dev/issue/135"}), + 71: syscalls.Supported("msgctl", Msgctl), 72: syscalls.PartiallySupported("fcntl", Fcntl, "Not all options are supported.", nil), 73: syscalls.PartiallySupported("flock", Flock, "Locks are held within the sandbox only.", nil), 74: syscalls.PartiallySupported("fsync", Fsync, "Full data flush is not guaranteed at this time.", nil), @@ -617,7 +617,7 @@ var ARM64 = &kernel.SyscallTable{ 184: syscalls.ErrorWithEvent("mq_notify", syserror.ENOSYS, "", []string{"gvisor.dev/issue/136"}), // TODO(b/29354921) 185: syscalls.ErrorWithEvent("mq_getsetattr", syserror.ENOSYS, "", []string{"gvisor.dev/issue/136"}), // TODO(b/29354921) 186: syscalls.Supported("msgget", Msgget), - 187: syscalls.PartiallySupported("msgctl", Msgctl, "Only supports IPC_RMID option.", []string{"gvisor.dev/issue/135"}), + 187: syscalls.Supported("msgctl", Msgctl), 188: syscalls.Supported("msgrcv", Msgrcv), 189: syscalls.Supported("msgsnd", Msgsnd), 190: syscalls.Supported("semget", Semget), diff --git a/pkg/sentry/syscalls/linux/sys_msgqueue.go b/pkg/sentry/syscalls/linux/sys_msgqueue.go index 5259ade90..60b989ee7 100644 --- a/pkg/sentry/syscalls/linux/sys_msgqueue.go +++ b/pkg/sentry/syscalls/linux/sys_msgqueue.go @@ -130,12 +130,63 @@ func receive(t *kernel.Task, id ipc.ID, mType int64, maxSize int64, msgCopy, wai func Msgctl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.SyscallControl, error) { id := ipc.ID(args[0].Int()) cmd := args[1].Int() + buf := args[2].Pointer() creds := auth.CredentialsFromContext(t) + r := t.IPCNamespace().MsgqueueRegistry() + switch cmd { + case linux.IPC_INFO: + info := r.IPCInfo(t) + _, err := info.CopyOut(t, buf) + return 0, nil, err + case linux.MSG_INFO: + msgInfo := r.MsgInfo(t) + _, err := msgInfo.CopyOut(t, buf) + return 0, nil, err case linux.IPC_RMID: - return 0, nil, t.IPCNamespace().MsgqueueRegistry().Remove(id, creds) + return 0, nil, r.Remove(id, creds) + } + + // Remaining commands use a queue. + queue, err := r.FindByID(id) + if err != nil { + return 0, nil, err + } + + switch cmd { + case linux.MSG_STAT: + // Technically, we should be treating id as "an index into the kernel's + // internal array that maintains information about all shared memory + // segments on the system". Since we don't track segments in an array, + // we'll just pretend the msqid is the index and do the same thing as + // IPC_STAT. Linux also uses the index as the msqid. + fallthrough + case linux.IPC_STAT: + stat, err := queue.Stat(t) + if err != nil { + return 0, nil, err + } + _, err = stat.CopyOut(t, buf) + return 0, nil, err + + case linux.MSG_STAT_ANY: + stat, err := queue.StatAny(t) + if err != nil { + return 0, nil, err + } + _, err = stat.CopyOut(t, buf) + return 0, nil, err + + case linux.IPC_SET: + var ds linux.MsqidDS + if _, err := ds.CopyIn(t, buf); err != nil { + return 0, nil, linuxerr.EINVAL + } + err := queue.Set(t, &ds) + return 0, nil, err + default: return 0, nil, linuxerr.EINVAL } |