diff options
Diffstat (limited to 'proc/mgt.c')
| -rw-r--r-- | proc/mgt.c | 56 |
1 files changed, 56 insertions, 0 deletions
@@ -732,7 +732,61 @@ new_proc (task_t task) complete_proc (p, genpid ()); return p; } + + +/* Task namespace support. */ + +/* Check if a given process is part of a task namespace but is not the + root. The root is managed by us, while all other tasks are managed + by the root itself. */ +int +namespace_is_subprocess (struct proc *p) +{ + return (p + && MACH_PORT_VALID (p->p_task_namespace) + && p->p_parent + && MACH_PORT_VALID (p->p_parent->p_task_namespace)); +} + +/* Translate PIDs valid in NAMESPACE into PIDs valid in our own + process space. + + Conditions: global_lock is unlocked before calling, and is locked + afterwards. */ +error_t +namespace_translate_pids (mach_port_t namespace, pid_t *pids, size_t pids_len) +{ + size_t i; + task_t *tasks; + + tasks = calloc (pids_len, sizeof *tasks); + if (tasks == NULL) + { + pthread_mutex_lock (&global_lock); + return ENOMEM; + } + + for (i = 0; i < pids_len; i++) + /* We handle errors by checking each returned task. */ + proc_pid2task (namespace, pids[i], &tasks[i]); + + pthread_mutex_lock (&global_lock); + + for (i = 0; i < pids_len; i++) + if (MACH_PORT_VALID (tasks[i])) + { + struct proc *p = task_find_nocreate (tasks[i]); + mach_port_deallocate (mach_task_self (), tasks[i]); + pids[i] = p ? p->p_pid : (pid_t) -1; + } + else + pids[i] = (pid_t) -1; + + free (tasks); + return 0; +} + /* Find the creator of the task namespace that P is in. */ struct proc * namespace_find_root (struct proc *p) @@ -759,6 +813,8 @@ namespace_terminate (struct proc *p, void *cookie) task_terminate (p->p_task); } + + /* The task associated with process P has died. Drop most state, and then record us as dead. Our parent will eventually complete the deallocation. */ |